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PK ��$Zmj�8 8 mcrypt_compat/AUTHORSnu �[��� mcrypt_compat Developer: TerraFrost (Jim Wigginton)
PK ��$Zȓ�PM M mcrypt_compat/README.mdnu �[��� # mcrypt_compat
[](https://travis-ci.org/phpseclib/mcrypt_compat)
PHP 5.x/7.x polyfill for mcrypt extension.
## Installation
With [Composer](https://getcomposer.org/):
```
composer require phpseclib/mcrypt_compat
```
## Supported algorithms
- rijndael-128
- rijndael-192
- rijndael-256
- des
- blowfish
- rc2
- tripledes
- arcfour
## Unsupported algorithms
- cast-128
- gost
- cast-256
- loki97
- saferplus
- wake
- blowfish-compat
- serpent
- xtea
- enigma
## Supported modes
- cbc
- ncfb
- cfb
- ctr
- ecb
- nofb
- stream
Although `nofb` is supported `ofb` is not. Further, mcrypt_compat's `ncfb` implementation has some incompatibles with mcrypt's implementation where `mcrypt_generic` and `mdecrypt_generic` are concerned. The unit tests elaborate.
PK ��$Z���b� b� mcrypt_compat/lib/mcrypt.phpnu �[��� <?php
/**
* mcrypt polyfill
*
* PHP 7.1 removed the mcrypt extension. This provides a compatibility layer for legacy applications.
*
* PHP versions 5 and 7
*
* LICENSE: Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2016 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
use phpseclib\Crypt\Rijndael;
use phpseclib\Crypt\Twofish;
use phpseclib\Crypt\Blowfish;
use phpseclib\Crypt\TripleDES;
use phpseclib\Crypt\DES;
use phpseclib\Crypt\RC2;
use phpseclib\Crypt\RC4;
use phpseclib\Crypt\Random;
use phpseclib\Crypt\Base;
if (!defined('MCRYPT_MODE_ECB')) {
/**#@+
* mcrypt constants
*
* @access public
*/
// http://php.net/manual/en/mcrypt.constants.php
define('MCRYPT_MODE_ECB', 'ecb');
define('MCRYPT_MODE_CBC', 'cbc');
define('MCRYPT_MODE_CFB', 'cfb');
define('MCRYPT_MODE_OFB', 'ofb');
define('MCRYPT_MODE_NOFB', 'nofb');
define('MCRYPT_MODE_STREAM', 'stream');
define('MCRYPT_ENCRYPT', 0);
define('MCRYPT_DECRYPT', 1);
define('MCRYPT_DEV_RANDOM', 0);
define('MCRYPT_DEV_URANDOM', 1);
define('MCRYPT_RAND', 2);
// http://php.net/manual/en/mcrypt.ciphers.php
define('MCRYPT_3DES', 'tripledes');
define('MCRYPT_ARCFOUR_IV', 'arcfour-iv');
define('MCRYPT_ARCFOUR', 'arcfour');
define('MCRYPT_BLOWFISH', 'blowfish');
define('MCRYPT_CAST_128', 'cast-128');
define('MCRYPT_CAST_256', 'cast-256');
define('MCRYPT_CRYPT', 'crypt');
define('MCRYPT_DES', 'des');
// MCRYPT_DES_COMPAT?
// MCRYPT_ENIGMA?
define('MCRYPT_GOST', 'gost');
define('MCRYPT_IDEA', 'idea');
define('MCRYPT_LOKI97', 'loki97');
define('MCRYPT_MARS', 'mars');
define('MCRYPT_PANAMA', 'panama');
define('MCRYPT_RIJNDAEL_128', 'rijndael-128');
define('MCRYPT_RIJNDAEL_192', 'rijndael-192');
define('MCRYPT_RIJNDAEL_256', 'rijndael-256');
define('MCRYPT_RC2', 'rc2');
// MCRYPT_RC4?
define('MCRYPT_RC6', 'rc6');
// MCRYPT_RC6_128
// MCRYPT_RC6_192
// MCRYPT_RC6_256
define('MCRYPT_SAFER64', 'safer-sk64');
define('MCRYPT_SAFER128', 'safer-sk128');
define('MCRYPT_SAFERPLUS', 'saferplus');
define('MCRYPT_SERPENT', 'serpent');
// MCRYPT_SERPENT_128?
// MCRYPT_SERPENT_192?
// MCRYPT_SERPENT_256?
define('MCRYPT_SKIPJACK', 'skipjack');
// MCRYPT_TEAN?
define('MCRYPT_THREEWAY', 'threeway');
define('MCRYPT_TRIPLEDES', 'tripledes');
define('MCRYPT_TWOFISH', 'twofish');
// MCRYPT_TWOFISH128?
// MCRYPT_TWOFISH192?
// MCRYPT_TWOFISH256?
define('MCRYPT_WAKE', 'wake');
define('MCRYPT_XTEA', 'xtea');
/**#@-*/
}
if (!function_exists('phpseclib_mcrypt_list_algorithms')) {
/**
* Sets the key
*
* @param Base $td
* @param string $key
* @access private
*/
function phpseclib_set_key(Base $td, $key)
{
$length = $origLength = strlen($key);
$reflection = new \ReflectionClass($td);
switch ($reflection->getShortName()) {
case 'TripleDES':
$length = 24;
break;
case 'DES':
$length = 8;
break;
case 'Twofish':
case 'Rijndael':
switch (true) {
case $length <= 16:
$length = 16;
break;
case $length <= 24:
$length = 24;
break;
default:
$length = 32;
}
break;
case 'Blowfish':
switch (true) {
case $length <= 3:
while (strlen($key) <= 5) {
$key.= $key;
}
$key = substr($key, 0, 6);
$td->setKey($key);
return;
case $length > 56:
$length = 56;
}
break;
case 'RC2':
if ($length > 128) {
$length = 128;
}
break;
case 'RC4':
if ($length > 256) {
$length = 256;
}
}
if ($length != $origLength) {
$key = str_pad(substr($key, 0, $length), $length, "\0");
}
$td->setKey($key);
}
/**
* Sets the IV
*
* @param Base $td
* @param string $iv
* @access private
*/
function phpseclib_set_iv(Base $td, $iv)
{
if ($td->mode != Base::MODE_ECB && $td->mode != Base::MODE_STREAM) {
$length = $td->getBlockLength() >> 3;
$iv = str_pad(substr($iv, 0, $length), $length, "\0");
$td->setIV($iv);
}
}
/**
* Gets an array of all supported ciphers.
*
* @param string $lib_dir optional
* @return array
* @access public
*/
function phpseclib_mcrypt_list_algorithms($lib_dir = '')
{
return array(
'rijndael-128',
'twofish',
'rijndael-192',
'blowfish-compat',
'des',
'rijndael-256',
'blowfish',
'rc2',
'tripledes',
'arcfour'
);
}
/**
* Gets an array of all supported modes
*
* @param string $lib_dir optional
* @return array
* @access public
*/
function phpseclib_mcrypt_list_modes($lib_dir = '')
{
return array(
'cbc',
'cfb',
'ctr',
'ecb',
'ncfb',
'nofb',
//'ofb',
'stream'
);
}
/**
* Creates an initialization vector (IV) from a random source
*
* The IV is only meant to give an alternative seed to the encryption routines. This IV does not need
* to be secret at all, though it can be desirable. You even can send it along with your ciphertext
* without losing security.
*
* @param int $size
* @param int $source optional
* @return string
* @access public
*/
function phpseclib_mcrypt_create_iv($size, $source = MCRYPT_DEV_URANDOM)
{
if ($size < 1 || $size > 0x7FFFFFFF) {
trigger_error('mcrypt_create_iv(): Cannot create an IV with a size of less than 1 or greater than 2147483647', E_USER_WARNING);
return '';
}
return Random::string($size);
}
/**
* Opens the module of the algorithm and the mode to be used
*
* This function opens the module of the algorithm and the mode to be used. The name of the algorithm
* is specified in algorithm, e.g. "twofish" or is one of the MCRYPT_ciphername constants. The module
* is closed by calling mcrypt_module_close().
*
* @param string $algorithm
* @param string $algorithm_directory
* @param string $mode
* @param string $mode_directory
* @return object
* @access public
*/
function phpseclib_mcrypt_module_open($algorithm, $algorithm_directory, $mode, $mode_directory)
{
$modeMap = array(
'ctr' => Base::MODE_CTR,
'ecb' => Base::MODE_ECB,
'cbc' => Base::MODE_CBC,
'cfb' => Base::MODE_CFB8,
'ncfb'=> Base::MODE_CFB,
'nofb'=> Base::MODE_OFB,
'stream' => Base::MODE_STREAM
);
switch (true) {
case !isset($modeMap[$mode]):
case $mode == 'stream' && $algorithm != 'arcfour':
case $algorithm == 'arcfour' && $mode != 'stream':
trigger_error('mcrypt_module_open(): Could not open encryption module', E_USER_WARNING);
return false;
}
switch ($algorithm) {
case 'rijndael-128':
$cipher = new Rijndael($modeMap[$mode]);
$cipher->setBlockLength(128);
break;
case 'twofish':
$cipher = new Twofish($modeMap[$mode]);
break;
case 'rijndael-192':
$cipher = new Rijndael($modeMap[$mode]);
$cipher->setBlockLength(192);
break;
case 'des':
$cipher = new DES($modeMap[$mode]);
break;
case 'rijndael-256':
$cipher = new Rijndael($modeMap[$mode]);
$cipher->setBlockLength(256);
break;
case 'blowfish':
$cipher = new Blowfish($modeMap[$mode]);
break;
case 'rc2':
$cipher = new RC2($modeMap[$mode]);
break;
case'tripledes':
$cipher = new TripleDES($modeMap[$mode]);
break;
case 'arcfour':
$cipher = new RC4();
break;
default:
trigger_error('mcrypt_module_open(): Could not open encryption module', E_USER_WARNING);
return false;
}
$cipher->disablePadding();
return $cipher;
}
/**
* Returns the maximum supported keysize of the opened mode
*
* Gets the maximum supported key size of the algorithm in bytes.
*
* @param Base $td
* @return int
* @access public
*/
function phpseclib_mcrypt_enc_get_key_size(Base $td)
{
// invalid parameters with mcrypt result in warning's. type hinting, as this function is doing,
// produces a catchable fatal error.
$reflection = new \ReflectionClass($td);
switch ($reflection->getShortName()) {
case 'Rijndael':
case 'Twofish':
return 32;
case 'DES':
return 8;
case 'TripleDES':
return 24;
case 'RC4':
return 256;
case 'Blowfish':
return 56;
case 'RC2':
return 128;
}
}
/**
* Gets the name of the specified cipher
*
* @param string $cipher
* @return mixed
* @access public
*/
function phpseclib_mcrypt_get_cipher_name($cipher)
{
switch ($cipher) {
case 'rijndael-128':
return 'Rijndael-128';
case 'twofish':
return 'Twofish';
case 'rijndael-192':
return 'Rijndael-192';
case 'des':
return 'DES';
case 'rijndael-256':
return 'Rijndael-256';
case 'blowfish':
return 'Blowfish';
case 'rc2':
return 'RC2';
case 'tripledes':
return '3DES';
case 'arcfour':
return 'RC4';
default:
return false;
}
}
/**
* Gets the block size of the specified cipher
*
* @param string $cipher
* @param string $mode optional
* @return int
* @access public
*/
function phpseclib_mcrypt_get_block_size($cipher, $mode = false)
{
if (!$mode) {
$mode = $cipher == 'rc4' ? 'stream' : 'cbc';
}
$td = @phpseclib_mcrypt_module_open($cipher, '', $mode, '');
if ($td === false) {
trigger_error('mcrypt_get_block_size(): Module initialization failed', E_USER_WARNING);
return false;
}
return phpseclib_mcrypt_enc_get_block_size($td);
}
/**
* Gets the key size of the specified cipher
*
* @param string $cipher
* @param string $mode optional
* @return int
* @access public
*/
function phpseclib_mcrypt_get_key_size($cipher, $mode = false)
{
if (!$mode) {
$mode = $cipher == 'rc4' ? 'stream' : 'cbc';
}
$td = @phpseclib_mcrypt_module_open($cipher, '', $mode, '');
if ($td === false) {
trigger_error('mcrypt_get_key_size(): Module initialization failed', E_USER_WARNING);
return false;
}
return phpseclib_mcrypt_enc_get_key_size($td);
}
/**
* Returns the size of the IV belonging to a specific cipher/mode combination
*
* @param string $cipher
* @param string $mode
* @return int
* @access public
*/
function phpseclib_mcrypt_get_iv_size($cipher, $mode)
{
$td = @phpseclib_mcrypt_module_open($cipher, '', $mode, '');
if ($td === false) {
trigger_error('mcrypt_get_iv_size(): Module initialization failed', E_USER_WARNING);
return false;
}
return phpseclib_mcrypt_enc_get_iv_size($td);
}
/**
* Returns the maximum supported keysize of the opened mode
*
* Gets the maximum supported keysize of the opened mode.
*
* @param string $algorithm
* @param string $lib_dir
* @return int
* @access public
*/
function phpseclib_mcrypt_module_get_algo_key_size($algorithm, $lib_dir = '')
{
$mode = $algorithm == 'rc4' ? 'stream' : 'cbc';
$td = @phpseclib_mcrypt_module_open($algorithm, '', $mode, '');
if ($td === false) {
trigger_error('mcrypt_module_get_algo_key_size(): Module initialization failed', E_USER_WARNING);
return false;
}
return phpseclib_mcrypt_enc_get_key_size($td);
}
/**
* Returns the size of the IV of the opened algorithm
*
* This function returns the size of the IV of the algorithm specified by the encryption
* descriptor in bytes. An IV is used in cbc, cfb and ofb modes, and in some algorithms
* in stream mode.
*
* @param Base $td
* @return int
* @access public
*/
function phpseclib_mcrypt_enc_get_iv_size(Base $td)
{
return $td->getBlockLength() >> 3;
}
/**
* Returns the blocksize of the opened algorithm
*
* Gets the blocksize of the opened algorithm.
*
* @param Base $td
* @return int
* @access public
*/
function phpseclib_mcrypt_enc_get_block_size(Base $td)
{
return $td->getBlockLength() >> 3;
}
/**
* Returns the blocksize of the specified algorithm
*
* Gets the blocksize of the specified algorithm.
*
* @param string $algorithm
* @param string $lib_dir
* @return int
* @access public
*/
function phpseclib_mcrypt_module_get_algo_block_size($algorithm, $lib_dir = '')
{
// cbc isn't a valid mode for rc4 but that's ok: -1 will still be returned
$td = @phpseclib_mcrypt_module_open($algorithm, '', 'cbc', '');
if ($td === false) {
return -1;
}
return $td->getBlockLength() >> 3;
}
/**
* Returns the name of the opened algorithm
*
* This function returns the name of the algorithm.
*
* @param Base $td
* @return string|bool
* @access public
*/
function phpseclib_mcrypt_enc_get_algorithms_name(Base $td)
{
$reflection = new \ReflectionObject($td);
switch ($reflection->getShortName()) {
case 'Rijndael':
return 'RIJNDAEL-' . $td->getBlockLength();
case 'Twofish':
return 'TWOFISH';
case 'Blowfish':
return 'BLOWFISH'; // what about BLOWFISH-COMPAT?
case 'DES':
return 'DES';
case 'RC2':
return 'RC2';
case 'TripleDES':
return 'TRIPLEDES';
case 'RC4':
return 'ARCFOUR';
}
return false;
}
/**
* Returns the name of the opened mode
*
* This function returns the name of the mode.
*
* @param Base $td
* @return string|bool
* @access public
*/
function phpseclib_mcrypt_enc_get_modes_name(Base $td)
{
$modeMap = array(
Base::MODE_CTR => 'CTR',
Base::MODE_ECB => 'ECB',
Base::MODE_CBC => 'CBC',
Base::MODE_CFB => 'nCFB',
Base::MODE_OFB => 'nOFB',
Base::MODE_STREAM => 'STREAM'
);
return isset($modeMap[$td->mode]) ? $modeMap[$td->mode] : false;
}
/**
* Checks whether the encryption of the opened mode works on blocks
*
* Tells whether the algorithm of the opened mode works on blocks (e.g. FALSE for stream, and TRUE for cbc, cfb, ofb)..
*
* @param Base $td
* @return bool
* @access public
*/
function phpseclib_mcrypt_enc_is_block_algorithm_mode(Base $td)
{
return $td->mode != Base::MODE_STREAM;
}
/**
* Checks whether the algorithm of the opened mode is a block algorithm
*
* Tells whether the algorithm of the opened mode is a block algorithm.
*
* @param Base $td
* @return bool
* @access public
*/
function phpseclib_mcrypt_enc_is_block_algorithm(Base $td)
{
return phpseclib_mcrypt_enc_get_algorithms_name($td) != 'ARCFOUR';
}
/**
* Checks whether the opened mode outputs blocks
*
* Tells whether the opened mode outputs blocks (e.g. TRUE for cbc and ecb, and FALSE for cfb and stream).
*
* @param Base $td
* @return bool
* @access public
*/
function phpseclib_mcrypt_enc_is_block_mode(Base $td)
{
return $td->mode == Base::MODE_ECB || $td->mode == Base::MODE_CBC;
}
/**
* Runs a self test on the opened module
*
* This function runs the self test on the algorithm specified by the descriptor td.
*
* @param Base $td
* @return bool
* @access public
*/
function phpseclib_mcrypt_enc_self_test(Base $td)
{
return true;
}
/**
* This function initializes all buffers needed for en/decryption.
*
* @param Base $td
* @param string $key
* @param string $iv
* @return int
* @access public
*/
function phpseclib_mcrypt_generic_init(Base $td, $key, $iv)
{
$iv_size = phpseclib_mcrypt_enc_get_iv_size($td);
if (strlen($iv) != $iv_size && $td->mode != Base::MODE_ECB) {
trigger_error('mcrypt_generic_init(): Iv size incorrect; supplied length: ' . strlen($iv) . ', needed: ' . $iv_size, E_USER_WARNING);
}
if (!strlen($key)) {
trigger_error('mcrypt_generic_init(): Key size is 0', E_USER_WARNING);
return -3;
}
$max_key_size = phpseclib_mcrypt_enc_get_key_size($td);
if (strlen($key) > $max_key_size) {
trigger_error('mcrypt_generic_init(): Key size too large; supplied length: ' . strlen($key) . ', max: ' . $max_key_size, E_USER_WARNING);
}
phpseclib_set_key($td, $key);
phpseclib_set_iv($td, $iv);
$td->enableContinuousBuffer();
$td->mcrypt_polyfill_init = true;
return 0;
}
/**
* Encrypt / decrypt data
*
* Performs checks common to both mcrypt_generic and mdecrypt_generic
*
* @param Base $td
* @param string $data
* @param string $op
* @return string|bool
* @access private
*/
function phpseclib_mcrypt_generic_helper(Base $td, &$data, $op)
{
// in the orig mcrypt, if mcrypt_generic_init() was called and an empty key was provided you'd get the following error:
// Warning: mcrypt_generic(): supplied resource is not a valid MCrypt resource
// that error doesn't really make a lot of sense in this context since $td is not a resource nor should it be one.
// in light of that we'll just display the same error that you get when you don't call mcrypt_generic_init() at all
if (!isset($td->mcrypt_polyfill_init)) {
trigger_error('m' . $op . '_generic(): Operation disallowed prior to mcrypt_generic_init().', E_USER_WARNING);
return false;
}
// phpseclib does not currently provide a way to retrieve the mode once it has been set via "public" methods
if (phpseclib_mcrypt_enc_is_block_mode($td)) {
$block_length = phpseclib_mcrypt_enc_get_iv_size($td);
$extra = strlen($data) % $block_length;
if ($extra) {
$data.= str_repeat("\0", $block_length - $extra);
}
}
return $op == 'crypt' ? $td->encrypt($data) : $td->decrypt($data);
}
/**
* This function encrypts data
*
* This function encrypts data. The data is padded with "\0" to make sure the length of the data
* is n * blocksize. This function returns the encrypted data. Note that the length of the
* returned string can in fact be longer than the input, due to the padding of the data.
*
* If you want to store the encrypted data in a database make sure to store the entire string as
* returned by mcrypt_generic, or the string will not entirely decrypt properly. If your original
* string is 10 characters long and the block size is 8 (use mcrypt_enc_get_block_size() to
* determine the blocksize), you would need at least 16 characters in your database field. Note
* the string returned by mdecrypt_generic() will be 16 characters as well...use rtrim($str, "\0")
* to remove the padding.
*
* If you are for example storing the data in a MySQL database remember that varchar fields
* automatically have trailing spaces removed during insertion. As encrypted data can end in a
* space (ASCII 32), the data will be damaged by this removal. Store data in a tinyblob/tinytext
* (or larger) field instead.
*
* @param Base $td
* @param string $data
* @return string|bool
* @access public
*/
function phpseclib_mcrypt_generic(Base $td, $data)
{
return phpseclib_mcrypt_generic_helper($td, $data, 'crypt');
}
/**
* Decrypts data
*
* This function decrypts data. Note that the length of the returned string can in fact be
* longer than the unencrypted string, due to the padding of the data.
*
* @param Base $td
* @param string $data
* @return string|bool
* @access public
*/
function phpseclib_mdecrypt_generic(Base $td, $data)
{
return phpseclib_mcrypt_generic_helper($td, $data, 'decrypt');
}
/**
* This function deinitializes an encryption module
*
* This function terminates encryption specified by the encryption descriptor (td).
* It clears all buffers, but does not close the module. You need to call
* mcrypt_module_close() yourself. (But PHP does this for you at the end of the
* script.)
*
* @param Base $td
* @return bool
* @access public
*/
function phpseclib_mcrypt_generic_deinit(Base $td)
{
if (!isset($td->mcrypt_polyfill_init)) {
trigger_error('mcrypt_generic_deinit(): Could not terminate encryption specifier', E_USER_WARNING);
return false;
}
$td->disableContinuousBuffer();
unset($td->mcrypt_polyfill_init);
return true;
}
/**
* Closes the mcrypt module
*
* Closes the specified encryption handle.
*
* @param Base $td
* @return bool
* @access public
*/
function phpseclib_mcrypt_module_close(Base $td)
{
//unset($td->mcrypt_polyfill_init);
return true;
}
/**
* Returns an array with the supported keysizes of the opened algorithm
*
* Returns an array with the key sizes supported by the specified algorithm.
* If it returns an empty array then all key sizes between 1 and mcrypt_module_get_algo_key_size()
* are supported by the algorithm.
*
* @param string $algorithm
* @param string $lib_dir optional
* @return array
* @access public
*/
function phpseclib_mcrypt_module_get_supported_key_sizes($algorithm, $lib_dir = '')
{
switch ($algorithm) {
case 'rijndael-128':
case 'rijndael-192':
case 'rijndael-256':
case 'twofish':
return array(16, 24, 32);
case 'des':
return array(8);
case 'tripledes':
return array(24);
//case 'arcfour':
//case 'blowfish':
//case 'rc2':
default:
return array();
}
}
/**
* Returns an array with the supported keysizes of the opened algorithm
*
* Gets the supported key sizes of the opened algorithm.
*
* @param Base $td
* @return array
* @access public
*/
function phpseclib_mcrypt_enc_get_supported_key_sizes(Base $td)
{
$algorithm = strtolower(phpseclib_mcrypt_enc_get_algorithms_name($td));
return phpseclib_mcrypt_module_get_supported_key_sizes($algorithm);
}
/**
* Returns if the specified module is a block algorithm or not
*
* This function returns TRUE if the mode is for use with block algorithms, otherwise it returns FALSE. (e.g. FALSE for stream, and TRUE for cbc, cfb, ofb).
*
* @param string $mode
* @param string $lib_dir optional
* @return bool
* @access public
*/
function phpseclib_mcrypt_module_is_block_algorithm_mode($mode, $lib_dir = '')
{
switch ($mode) {
case 'cbc':
case 'ctr':
case 'ecb':
case 'cfb':
case 'ncfb':
case 'nofb':
return true;
}
return false;
}
/**
* This function checks whether the specified algorithm is a block algorithm
*
* This function returns TRUE if the specified algorithm is a block algorithm, or FALSE if it is a stream one.
*
* @param string $mode
* @param string $lib_dir optional
* @return bool
* @access public
*/
function phpseclib_mcrypt_module_is_block_algorithm($algorithm, $lib_dir = '')
{
switch ($algorithm) {
case 'rijndael-128':
case 'twofish':
case 'rijndael-192':
case 'des':
case 'rijndael-256':
case 'blowfish':
case 'rc2':
case 'tripledes':
return true;
}
return false;
}
/**
* Returns if the specified mode outputs blocks or not
*
* This function returns TRUE if the mode outputs blocks of bytes or FALSE if it outputs just bytes. (e.g. TRUE for cbc and ecb, and FALSE for cfb and stream).
*
* @param string $mode
* @param string $lib_dir optional
* @return bool
* @access public
*/
function phpseclib_mcrypt_module_is_block_mode($mode, $lib_dir = '')
{
switch ($mode) {
case 'cbc':
case 'ecb':
return true;
}
return false;
}
/**
* Returns if the specified mode can use an IV or not
*
* @param string $mode
* @return bool
* @access private
*/
function phpseclib_mcrypt_module_is_iv_mode($mode)
{
switch ($mode) {
case 'ecb':
case 'stream':
return false;
}
return true;
}
/**
* This function runs a self test on the specified module
*
* This function runs the self test on the algorithm specified.
*
* @param string $mode
* @param string $lib_dir optional
* @return bool
* @access public
*/
function phpseclib_mcrypt_module_self_test($algorithm, $lib_dir = '')
{
return in_array($algorithm, phpseclib_mcrypt_list_algorithms());
}
/**
* Encrypt / decrypt data
*
* Performs checks common to both mcrypt_encrypt and mcrypt_decrypt
*
* @param string $cipher
* @param string $key
* @param string $data
* @param string $mode
* @param string $iv
* @param string $op
* @return string|bool
* @access private
*/
function phpseclib_mcrypt_helper($cipher, $key, $data, $mode, $iv, $op)
{
// PHP 5.6 made mcrypt_encrypt() a lot less tolerant of bad input but it neglected to change
// anything about mcrypt_generic(). and despite the changes insufficiently long plaintext
// is still accepted.
$keyLen = strlen($key);
$sizes = phpseclib_mcrypt_module_get_supported_key_sizes($cipher);
if (count($sizes) && !in_array($keyLen, $sizes)) {
trigger_error(
'mcrypt_' . $op . '(): Key of size ' . $keyLen . ' not supported by this algorithm. Only keys of sizes ' .
preg_replace('#, (\d+)$#', ' or $1', implode(', ', $sizes)) . ' supported',
E_USER_WARNING
);
return false;
}
$td = @phpseclib_mcrypt_module_open($cipher, '', $mode, '');
if ($td === false) {
trigger_error('mcrypt_encrypt(): Module initialization failed', E_USER_WARNING);
return false;
}
$maxKeySize = phpseclib_mcrypt_enc_get_key_size($td);
if (!count($sizes) && $keyLen > $maxKeySize) {
trigger_error(
'mcrypt_' . $op . '(): Key of size ' . $keyLen . ' not supported by this algorithm. Only keys of size 1 to ' . $maxKeySize . ' supported',
E_USER_WARNING
);
return false;
}
if (phpseclib_mcrypt_module_is_iv_mode($mode)) {
$iv_size = phpseclib_mcrypt_enc_get_iv_size($td);
if (!isset($iv) && $iv_size) {
trigger_error(
'mcrypt_' . $op . '(): Encryption mode requires an initialization vector of size ' . $iv_size,
E_USER_WARNING
);
return false;
}
if (strlen($iv) != $iv_size) {
trigger_error(
'mcrypt_' . $op . '(): Received initialization vector of size ' . strlen($iv) . ', but size ' . $iv_size . ' is required for this encryption mode',
E_USER_WARNING
);
return false;
}
} else {
$iv = null;
}
phpseclib_mcrypt_generic_init($td, $key, $iv);
return $op == 'encrypt' ? phpseclib_mcrypt_generic($td, $data) : phpseclib_mdecrypt_generic($td, $data);
}
/**
* Encrypts plaintext with given parameters
*
* Encrypts the data and returns it.
*
* @param string $cipher
* @param string $key
* @param string $data
* @param string $mode
* @param string $iv optional
* @return string|bool
* @access public
*/
function phpseclib_mcrypt_encrypt($cipher, $key, $data, $mode, $iv = null)
{
return phpseclib_mcrypt_helper($cipher, $key, $data, $mode, $iv, 'encrypt');
}
/**
* Decrypts crypttext with given parameters
*
* Decrypts the data and returns the unencrypted data.
*
* @param string $cipher
* @param string $key
* @param string $data
* @param string $mode
* @param string $iv optional
* @return string|bool
* @access public
*/
function phpseclib_mcrypt_decrypt($cipher, $key, $data, $mode, $iv = null)
{
return phpseclib_mcrypt_helper($cipher, $key, $data, $mode, $iv, 'decrypt');
}
/**
* mcrypt_compat stream filter
*
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class phpseclib_mcrypt_filter extends php_user_filter
{
/**
* The Cipher Object
*
* @var object
* @access private
*/
private $cipher;
/**
* To encrypt or decrypt
*
* @var boolean
* @access private
*/
private $op;
/**
* Buffer for ECB / CBC
*
* @var string
* @access private
*/
private $buffer = '';
/**
* Cipher block length
*
* @var int
* @access private
*/
private $block_length;
/**
* Cipher block mode
*
* @var bool
* @access private
*/
private $block_mode;
/**
* Buffer handle
*
* @var resource
* @access private
*/
private $bh;
/**
* Called when applying the filter
*
* This method is called whenever data is read from or written to the attached stream
* (such as with fread() or fwrite()).
*
* @param resource $in
* @param resource $out
* @param int $consumed
* @param bool $closing
* @link http://php.net/manual/en/php-user-filter.filter.php
* @return int
* @access public
*/
#[\ReturnTypeWillChange]
public function filter($in, $out, &$consumed, $closing)
{
$newlen = 0;
while ($bucket = stream_bucket_make_writeable($in)) {
if ($this->block_mode) {
$bucket->data = $this->buffer . $bucket->data;
$extra = strlen($bucket->data) % $this->block_length;
if (!$extra) {
$this->buffer = '';
} else {
$this->buffer = substr($bucket->data, -$extra);
$bucket->data = substr($bucket->data, 0, -$extra);
}
if (!strlen($bucket->data)) {
continue;
}
}
$bucket->data = $this->op ?
$this->cipher->encrypt($bucket->data) :
$this->cipher->decrypt($bucket->data);
$newlen+= strlen($bucket->data);
$consumed+= $bucket->datalen;
stream_bucket_append($out, $bucket);
}
if ($closing && strlen($this->buffer)) {
$temp = $this->buffer . str_repeat("\0", $this->block_length - strlen($this->buffer));
$data = $this->op ?
$this->cipher->encrypt($temp) :
$this->cipher->decrypt($temp);
$newlen+= strlen($data);
$bucket = stream_bucket_new($this->bh, $data);
$this->buffer = '';
$newlen = 0;
stream_bucket_append($out, $bucket);
}
return $this->block_mode && $newlen && $newlen < $this->block_length ? PSFS_FEED_ME : PSFS_PASS_ON;
}
/**
* Called when creating the filter
*
* This method is called during instantiation of the filter class object.
* If your filter allocates or initializes any other resources (such as a buffer),
* this is the place to do it.
*
* @link http://php.net/manual/en/php-user-filter.oncreate.php
* @return bool
* @access public
*/
#[\ReturnTypeWillChange]
public function onCreate()
{
if (!isset($this->params) || !is_array($this->params)) {
trigger_error('stream_filter_append(): Filter parameters for ' . $this->filtername . ' must be an array');
return false;
}
if (!isset($this->params['iv']) || !is_string($this->params['iv'])) {
trigger_error('stream_filter_append(): Filter parameter[iv] not provided or not of type: string');
return false;
}
if (!isset($this->params['key']) || !is_string($this->params['key'])) {
trigger_error('stream_filter_append(): key not specified or is not a string');
return false;
}
$filtername = substr($this->filtername, 0, 10) == 'phpseclib.' ?
substr($this->filtername, 10) :
$this->filtername;
$parts = explode('.', $filtername);
if (count($parts) != 2) {
trigger_error('stream_filter_append(): Could not open encryption module');
return false;
}
switch ($parts[0]) {
case 'mcrypt':
case 'mdecrypt':
break;
default:
trigger_error('stream_filter_append(): Could not open encryption module');
return false;
}
$mode = isset($this->params['mode']) ? $this->params['mode'] : 'cbc';
$cipher = @phpseclib_mcrypt_module_open($parts[1], '', $mode, '');
if ($cipher === false) {
trigger_error('stream_filter_append(): Could not open encryption module');
return false;
}
$cipher->enableContinuousBuffer();
phpseclib_set_key($cipher, $this->params['key']);
phpseclib_set_iv($cipher, $this->params['iv']);
$this->op = $parts[0] == 'mcrypt';
$this->cipher = $cipher;
$this->block_length = phpseclib_mcrypt_enc_get_iv_size($cipher);
$this->block_mode = phpseclib_mcrypt_module_is_block_mode($mode);
if ($this->block_mode) {
$this->bh = fopen('php://memory', 'w+');
}
return true;
}
/**
* Called when closing the filter
*
* This method is called upon filter shutdown (typically, this is also during stream shutdown), and is
* executed after the flush method is called. If any resources were allocated or initialized during
* onCreate() this would be the time to destroy or dispose of them.
*
* @link http://php.net/manual/en/php-user-filter.onclose.php
* @access public
*/
#[\ReturnTypeWillChange]
public function onClose()
{
if ($this->bh) {
fclose($this->bh);
}
}
}
stream_filter_register('phpseclib.mcrypt.*', 'phpseclib_mcrypt_filter');
stream_filter_register('phpseclib.mdecrypt.*', 'phpseclib_mcrypt_filter');
}
// define
if (!function_exists('mcrypt_list_algorithms')) {
function mcrypt_list_algorithms($lib_dir = '')
{
return phpseclib_mcrypt_list_algorithms($lib_dir);
}
function mcrypt_list_modes($lib_dir = '')
{
return phpseclib_mcrypt_list_modes($lib_dir);
}
function mcrypt_create_iv($size, $source = MCRYPT_DEV_URANDOM)
{
return phpseclib_mcrypt_create_iv($size, $source);
}
function mcrypt_module_open($algorithm, $algorithm_directory, $mode, $mode_directory)
{
return phpseclib_mcrypt_module_open($algorithm, $algorithm_directory, $mode, $mode_directory);
}
function mcrypt_enc_get_key_size(Base $td)
{
return phpseclib_mcrypt_enc_get_key_size($td);
}
function mcrypt_enc_get_iv_size(Base $td)
{
return phpseclib_mcrypt_enc_get_iv_size($td);
}
function mcrypt_enc_get_block_size(Base $td)
{
return phpseclib_mcrypt_enc_get_block_size($td);
}
function mcrypt_generic_init(Base $td, $key, $iv)
{
return phpseclib_mcrypt_generic_init($td, $key, $iv);
}
function mcrypt_generic(Base $td, $data)
{
return phpseclib_mcrypt_generic($td, $data);
}
function mcrypt_generic_deinit(Base $td)
{
return phpseclib_mcrypt_generic_deinit($td);
}
function mcrypt_module_close(Base $td)
{
return phpseclib_mcrypt_module_close($td);
}
function mdecrypt_generic(Base $td, $data)
{
return phpseclib_mdecrypt_generic($td, $data);
}
function mcrypt_enc_get_algorithms_name(Base $td)
{
return phpseclib_mcrypt_enc_get_algorithms_name($td);
}
function mcrypt_enc_get_modes_name(Base $td)
{
return phpseclib_mcrypt_enc_get_modes_name($td);
}
function mcrypt_enc_is_block_algorithm_mode(Base $td)
{
return phpseclib_mcrypt_enc_is_block_algorithm_mode($td);
}
function mcrypt_enc_is_block_algorithm(Base $td)
{
return phpseclib_mcrypt_enc_is_block_algorithm($td);
}
function mcrypt_enc_self_test(Base $td)
{
return phpseclib_mcrypt_enc_self_test($td);
}
function mcrypt_module_get_supported_key_sizes($algorithm, $lib_dir = '')
{
return phpseclib_mcrypt_module_get_supported_key_sizes($algorithm, $lib_dir);
}
function mcrypt_encrypt($cipher, $key, $data, $mode, $iv = null)
{
return phpseclib_mcrypt_encrypt($cipher, $key, $data, $mode, $iv);
}
function mcrypt_module_get_algo_block_size($algorithm, $lib_dir = '')
{
return phpseclib_mcrypt_module_get_algo_block_size($algorithm, $lib_dir);
}
function mcrypt_get_block_size($cipher, $mode = '')
{
return phpseclib_mcrypt_get_block_size($cipher, $mode);
}
function mcrypt_get_cipher_name($cipher)
{
return phpseclib_mcrypt_get_cipher_name($cipher);
}
function mcrypt_get_key_size($cipher, $mode = false)
{
return phpseclib_mcrypt_get_key_size($cipher, $mode);
}
function mcrypt_get_iv_size($cipher, $mode)
{
return phpseclib_mcrypt_get_iv_size($cipher, $mode);
}
function mcrypt_module_get_algo_key_size($algorithm, $lib_dir = '')
{
return phpseclib_mcrypt_module_get_algo_key_size($algorithm, $lib_dir);
}
function mcrypt_enc_get_supported_key_sizes(Base $td)
{
return phpseclib_mcrypt_enc_get_supported_key_sizes($td);
}
function mcrypt_module_is_block_algorithm_mode($mode, $lib_dir = '')
{
return phpseclib_mcrypt_module_is_block_algorithm_mode($mode, $lib_dir);
}
function mcrypt_module_is_block_algorithm($algorithm, $lib_dir= '')
{
return phpseclib_mcrypt_module_is_block_algorithm($algorithm, $lib_dir);
}
function mcrypt_module_is_block_mode($mode, $lib_dir = '')
{
return phpseclib_mcrypt_module_is_block_mode($mode, $lib_dir);
}
function mcrypt_module_self_test($algorithm, $lib_dir = '')
{
return phpseclib_mcrypt_module_self_test($algorithm, $lib_dir);
}
function mcrypt_decrypt($cipher, $key, $data, $mode, $iv = null)
{
return phpseclib_mcrypt_decrypt($cipher, $key, $data, $mode, $iv);
}
//if (!in_array('mcrypt.*', stream_get_filters()) {
stream_filter_register('mcrypt.*', 'phpseclib_mcrypt_filter');
stream_filter_register('mdecrypt.*', 'phpseclib_mcrypt_filter');
//}
}
PK ��$Z��iPX X mcrypt_compat/LICENSEnu �[��� Copyright 2007-2016 TerraFrost and other contributors
http://phpseclib.sourceforge.net/
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
PK ��$Z���> mcrypt_compat/.styleci.ymlnu �[��� preset: psr2
PK ��$Znj��< < phpseclib/AUTHORSnu �[��� phpseclib Lead Developer: TerraFrost (Jim Wigginton)
phpseclib Developers: monnerat (Patrick Monnerat)
bantu (Andreas Fischer)
petrich (Hans-Jürgen Petrich)
GrahamCampbell (Graham Campbell)
hc-jwormanPK ��$ZS�� phpseclib/appveyor.ymlnu �[��� build: false
shallow_clone: false
platform:
- x86
- x64
clone_folder: C:\projects\phpseclib
install:
- cinst -y OpenSSL.Light
- SET PATH=C:\Program Files\OpenSSL;%PATH%
- sc config wuauserv start= auto
- net start wuauserv
- cinst -y php --version 5.6.30
- cd c:\tools\php56
- copy php.ini-production php.ini
- echo date.timezone="UTC" >> php.ini
- echo extension_dir=ext >> php.ini
- echo extension=php_openssl.dll >> php.ini
- echo extension=php_gmp.dll >> php.ini
- cd C:\projects\phpseclib
- SET PATH=C:\tools\php56;%PATH%
- php.exe -r "readfile('http://getcomposer.org/installer');" | php.exe
- php.exe composer.phar install --prefer-source --no-interaction
test_script:
- cd C:\projects\phpseclib
- vendor\bin\phpunit.bat tests/Windows32Test.phpPK ��$Zl��+� � phpseclib/README.mdnu �[��� # phpseclib - PHP Secure Communications Library
[](https://travis-ci.com/github/phpseclib/phpseclib)
## Supporting phpseclib
- [Become a backer or sponsor on Patreon](https://www.patreon.com/phpseclib)
- [One-time donation via PayPal or crypto-currencies](http://sourceforge.net/donate/index.php?group_id=198487)
- [Subscribe to Tidelift](https://tidelift.com/subscription/pkg/packagist-phpseclib-phpseclib?utm_source=packagist-phpseclib-phpseclib&utm_medium=referral&utm_campaign=readme)
## Introduction
MIT-licensed pure-PHP implementations of the following:
SSH-2, SFTP, X.509, an arbitrary-precision integer arithmetic library, Ed25519 / Ed449 / Curve25519 / Curve449, ECDSA / ECDH (with support for 66 curves), RSA (PKCS#1 v2.2 compliant), DSA / DH, DES / 3DES / RC4 / Rijndael / AES / Blowfish / Twofish / Salsa20 / ChaCha20, GCM / Poly1305
* [Browse Git](https://github.com/phpseclib/phpseclib)
## Documentation
* [Documentation / Manual](https://phpseclib.com/)
* [API Documentation](https://api.phpseclib.com/2.0/) (generated by Doctum)
## Branches
### master
* Development Branch
* Unstable API
* Do not use in production
### 3.0
* Long term support (LTS) release
* Major expansion of cryptographic primitives
* Minimum PHP version: 5.6.1
* PSR-4 autoloading with namespace rooted at `\phpseclib3`
* Install via Composer: `composer require phpseclib/phpseclib:~3.0`
### 2.0
* Long term support (LTS) release
* Modernized version of 1.0
* Minimum PHP version: 5.3.3
* PSR-4 autoloading with namespace rooted at `\phpseclib`
* Install via Composer: `composer require phpseclib/phpseclib:~2.0`
### 1.0
* Long term support (LTS) release
* PHP4 compatible
* Composer compatible (PSR-0 autoloading)
* Install using Composer: `composer require phpseclib/phpseclib:~1.0`
* Install using PEAR: See [phpseclib PEAR Channel Documentation](http://phpseclib.sourceforge.net/pear.htm)
* [Download 1.0.20 as ZIP](http://sourceforge.net/projects/phpseclib/files/phpseclib1.0.20.zip/download)
## Security contact information
To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure.
## Support
Need Support?
* [Checkout Questions and Answers on Stack Overflow](http://stackoverflow.com/questions/tagged/phpseclib)
* [Create a Support Ticket on GitHub](https://github.com/phpseclib/phpseclib/issues/new)
* [Browse the Support Forum](http://www.frostjedi.com/phpbb/viewforum.php?f=46) (no longer in use)
## Special Thanks
Special Thanks to our $50+ sponsors!:
- Allan Simon
- [ChargeOver](https://chargeover.com/)
## Contributing
1. Fork the Project
2. Ensure you have Composer installed (see [Composer Download Instructions](https://getcomposer.org/download/))
3. Install Development Dependencies
``` sh
composer install
```
4. Create a Feature Branch
5. (Recommended) Run the Test Suite
``` sh
vendor/bin/phpunit
```
6. (Recommended) Check whether your code conforms to our Coding Standards by running
``` sh
vendor/bin/phing -f build/build.xml sniff
```
7. Send us a Pull Request
PK ��$Z��0Bfk fk phpseclib/CHANGELOG.mdnu �[��� # Changelog
## 2.0.39 - 2022-10-24
- SFTP: fix deprecated implicit float to int on 32-bit PHP 8.1 (#1841)
- SFTP: restore orig behavior when deleting non-existant folder (#1847)
- Random: fix fallback on PHP 8.1+
## 2.0.38 - 2022-09-02
- RSA: add support for OpenSSH encrypted keys (#1737, #1733, #1531, #1490)
- SSH2: fix possibly undefined variable error (#1802)
- SFTP: try to delete dir even if it can't be opened (#1791)
- SFTP: try without path canonicalization if initial realpath() fails (#1796)
- SFTP: detect if stream metadata has wrapper_type set for put() method (#1792)
- BigInteger: fix behavior on 32-bit PHP installs (#1820)
- don't use dynamic properties, which are deprecated in PHP 8.2 (#1808, #1822)
- fix deprecated implicit float to int on 32-bit PHP 8.1
## 2.0.37 - 2022-04-04
- RSA: add support for loading PuTTY v3 keys
- Crypt/Base: fix CTR mode with continuous buffer with non-eval PHP
- Crypt/Base: use sodium_increment in _increment_str
- Crypt/Base: fix deprecation notice (#1770)
- SSH2/Agent: rm unused parameter (#1757)
## 2.0.36 - 2022-01-30
- SSH2: make login() return false if no valid auth methods are found (#1744)
- SFTP: fix chgrp() for version < 4 (#1730)
- Crypt/Base: add OFB8 as a new mode (phpseclib/mcrypt_compat#33)
- RSA & BigInteger: check phpinfo() available before using it (#1726)
## 2.0.35 - 2021-11-28
- SSH2: add "smart multi factor" login mode (enabled by default) (#1648)
- SSH2: error out when no data is received from the server (#1647)
- SFTP: don't attempt to parse unsupported attributes (#1708)
- SFTP: getSupportedVersions() call didn't work
## 2.0.34 - 2021-10-26
- SSH2: add support for zlib and zlib@openssh.com compression
- SFTP: add support for SFTPv4/5/6
- SFTP: add option to allow arbitrary length packets (#1691)
- RSA: ssh-keygen -yf private.key fails if \r is present (#1698)
## 2.0.33 - 2021-08-15
- SFTP: don't check SFTP packet size after SFTP initialization (#1606)
- SFTP: timeout during SFTP init should return false (#1684)
- SFTP: return false if get_channel_packet returns false (#1678)
- ASN1: return false when not enough bytes are available (#1676)
## 2.0.32 - 2021-06-13
- SSH2: add getAuthMethodsToContinue() method (#1648)
- SSH2: timeout would occasionally infinitely loop
- SSH2: fix PHP7.4 errors about accessing bool as string (#1656)
- SSH2: fix issue with key re-exchange (#1644)
- SFTP: reopen channel on channel closure (#1654)
- X509: extra characters before cert weren't being removed (#1659)
- ASN1: fix timezone issue when non-utc time is given (#1562)
- RSA: OAEP decryption didn't check labels correctly (#1669)
## 2.0.31 - 2021-04-06
- X509: always parse the first cert of a bundle (#1568)
- SSH2: behave like putty with broken publickey auth (#1572)
- SSH2: don't close channel on unexpected response to channel request (#1631)
- RSA: support keys with PSS algorithm identifier (#1584)
- RSA: cleanup RSA PKCS#1 v1.5 signature verification (CVE-2021-30130)
- SFTP/Stream: make it so you can write past the end of a file (#1618)
- SFTP: fix undefined index notice in stream touch() (#1615)
- SFTP: digit only filenames were converted to integers by php (#1623)
- BigInteger: fix issue with toBits on 32-bit PHP 8 installs
- Crypt: use a custom error handler for mcrypt to avoid deprecation errors
## 2.0.30 - 2020-12-16
- X509: don't attempt to parse multi-cert PEMs (#1542)
- SFTP: add stream to get method (#1546)
- SFTP: progress callback should report actual downloaded bytes (#1543)
- SSH2: end connection faster for algorithm mismatch
- SSH2: add setKeepAlive() method (#1529)
- ANSI: fix PHP8 compatibility issues
## 2.0.29 - 2020-09-07
- SFTP: add enableDatePreservation() / disableDatePreservation() (#1496)
- SFTP: uploads on low speed networks could get in infinite loop (#1507)
- SSH2: when building algo list look at if crypto engine is set (#1500)
- X509: really looong base64 encoded strings broke extractBER() (#1486)
## 2.0.28 - 2020-07-08
- SFTP: realpath('') produced an error (#1474)
- SFTP: if /path/to/file is a file then /path/to/file/whatever errors (#1475)
- SFTP: speed up uploads (by changing SFTP upload packet size from 4KB to 32KB)
- ANSI: fix "Number of elements can't be negative" error
## 2.0.27 - 2020-05-22
- SFTP: another attempt at speeding up uploads (#1455)
- SSH2: try logging in with none as an auth method first (#1454)
- ASN1: fix for malformed ASN1 strings (#1456)
## 2.0.26 - 2020-03-22
- SFTP: another attempt at speeding up uploads (#1455)
- SSH2: try logging in with none as an auth method first (#1454)
- ASN1: fix for malformed ASN1 strings (#1456)
## 2.0.25 - 2020-02-25
- SFTP: re-add buffering (#1455)
## 2.0.24 - 2020-02-22
- X509: fix PHP 5.3 compatability issue
- SSH2: arcfour128 / arcfour256 were being included twice
- SSH2: make window resizing behave more consistently with PuTTY (#1421)
- SSH2: sodium_compat doesn't support memzero (#1432)
- SSH2: logging enhancements
- SFTP: don't buffer up download requests (PuTTY doesn't) (#1425)
- RSA: make PSS verification work for key length that aren't a power of 2 (#1423)
## 2.0.23 - 2019-09-16
- SSH2: fix regression for connecting to servers with bad hostnames (#1405)
## 2.0.22 - 2019-09-15
- SSH2: backport setPreferredAlgorithms() / getAlgorithmsNegotiated (#1156)
- SSH2 / SFTP: fix issues with ping() (#1402)
- X509: IPs in nameconstraints extension include netmask (#1387)
- X509: fix issue with explicit time tags whose maps expect implicit (#1388)
- BigInteger: fix bug with toBytes() with fixed precision negative numbers
- fix PHP 7.4 deprecations
## 2.0.21 - 2019-07-14
- SSH2: only auto close the channel for exec() timeouts (#1384)
## 2.0.20 - 2019-06-23
- BigInteger: lower PHP req back down to PHP 5.3.3 (#1382)
## 2.0.19 - 2019-06-19
- BigInteger: fix issues with divide method in pure-PHP mode
## 2.0.18 - 2019-06-13
- SSH2: close channel when a timeout occurs (#1378)
- SFTP: improve handling of malformed packets (#1371)
- RSA: add support for OpenSSH private keys (#1372)
## 2.0.17 - 2019-05-26
- BigInteger: new BigInteger('-0') caused issues with GMP
## 2.0.16 - 2019-05-26
- BigInteger: new BigInteger('00') caused issues with GMP
- BigInteger: GMP engine didn't always return 1 or -1
- ASN1: revamp how OIDs are handled (#1367)
- ASN1: correctly handle long tags
- SSH2: fix issue with reconnecting via ping() (#1353)
- RSA: use hash_equals if available
## 2.0.15 - 2019-03-10
- SFTP: make it so get() can correctly handle out of order responses (#1343)
- Crypt: avoid bogus IV errors in ECB mode with OpenSSL (#1087)
- RSA: protect against possible timing attack during OAEP decryption
- RSA: fix possible memory leak with XML keys (#1346)
- Hash: fix issue with undefined constants (#1347)
- Hash: fix issues with the mode
- SCP: issue error if remote_file is empty in put() call (#1335)
- X509: whitelist OID 1.3.6.1.4.1.11129.2.4.2 (#1341)
## 2.0.14 - 2019-01-27
- SSH2: ssh-rsa is sometimes incorrectly used instead of rsa-sha2-256 (#1331)
- SSH2: more strictly adhere to RFC8332 for rsa-sha2-256/512 (#1332)
## 2.0.13 - 2018-12-16
- SSH2: fix order of user_error() / bitmap reset (#1314)
- SSH2: setTimeout(0) didn't work as intended (#1116)
- Agent: add support for rsa-sha2-256 / rsa-sha2-512 (#1319)
- Agent: add parameter to constructor (#1319)
- X509: fix errors with validateDate (#1318)
## 2.0.12 - 2018-11-04
- SSH2: fixes relating to delayed global requests (#1271)
- SSH2: setEngine -> setPreferredEngine (#1294)
- SSH2: reset $this->bitmap when the connection fails (#1298)
- SSH2: add ping() method (#1298)
- SSH2: add support for rsa-sha2-256 / rsa-sha2-512 (RFC8332)
- SFTP: make rawlist give same result regardless of stat cache (#1287)
- Hash: save hashed keys for re-use
## 2.0.11 - 2018-04-15
- X509: auto download intermediate certs
- BigInteger: fix for (new BigInteger(48))->toString(true)) (#1264)
- ASN1: class is never set as key in _decode_ber
- check if phpinfo() is available before using (#1256)
- backport CFB8 support from master to 2.0 (#1257)
## 2.0.10 - 2018-02-08
- BigInteger: fix issue with bitwise_xor (#1245)
- Crypt: some of the minimum lengths were off
- SFTP: update stat cache accordingly when file becomes a directory (#1235)
- SFTP: fix issue with extended attributes on 64-bit PHP installs (#1248)
- SSH2: more channel handling updates (#1200)
- X509: use anonymous functions in PHP >= 5.3.0
- X509: revise logic for validateSignature (#1213)
- X509: fix 7.2 error when extensions were removed and new ones added (#1243)
- fix float to int conversions on ARM CPU's (#1220)
## 2.0.9 - 2017-11-29
- 2.0.8 tag was done off of master branch - not 2.0 branch
## 2.0.8 - 2017-11-29
- SSH2: fix issue with key re-exchange
- SSH2: updates to dealing with extraneous channel packets
- X509: URL validation didn't work (#1203)
## 2.0.7 - 2017-10-22
- SSH2:
- add new READ_NEXT mode (#1140)
- add sendIdentificationStringFirst()
- add sendKEXINITFirst()
- add sendIdentificationStringLast()
- add sendKEXINITLast() (#1162)
- assume any SSH server >= 1.99 supports SSH2 (#1170)
- workaround for bad arcfour256 implementations (#1171)
- don't choke when getting response from diff channel in exec() (#1167)
- SFTP:
- add enablePathCanonicalization()
- add disablePathCanonicalization() (#1137)
- fix put() with remote file stream resource (#1177)
- ANSI: misc fixes (#1150, #1161)
- X509: use DateTime instead of unix time (#1166)
- Ciphers: use eval() instead of create_function() for >= 5.3
## 2.0.6 - 2017-06-05
- Crypt: fix OpenSSL engine on <= PHP 5.3.6 (#1122)
- Random: suppress possible E_DEPRECATED errors
- RSA: reset variables if bad key was loaded
## 2.0.5 - 2017-05-07
- SSH2: don't use timeout value of 0 for fsockopen (#775)
- SSH2: make it so disabling PTY closes exec() channel if it's open (#1009)
- SSH2: include `<pre>` tags in getLog result when SAPI isn't CLI
- SFTP: don't assume current directory when $path parameter for delete is null (#1059)
- SFTP: fix put() with php://input as source (#1119)
- ASN1: fix UTCTime parsing (#1110)
- X509: ignore certificate transparency extension (#1073)
- Crypt: OpenSSL apparently supports variable size keys (#1085)
## 2.0.4 - 2016-10-03
- fix E_DEPRECATED errors on PHP 7.1 (#1041)
- SFTP: speed up downloads (#945)
- SFTP: fix infinite loop when uploading empty file (#995)
- ASN1: fix possible infinite loop in decode (#1027)
## 2.0.3 - 2016-08-18
- BigInteger/RSA: don't compare openssl versions > 1.0 (#946)
- RSA: don't attempt to use the CRT when zero value components exist (#980)
- RSA: zero salt length RSA signatures don't work (#1002)
- ASN1: fix PHP Warning on PHP 7.1 (#1013)
- X509: set parameter fields to null for CSR's / RSA (#914)
- CRL optimizations (#1000)
- SSH2: fix "Expected SSH_FXP_STATUS or ..." error (#999)
- SSH2: use stream_get_* instead of fread() / fgets() (#967)
- SFTP: make symlinks support relative target's (#1004)
- SFTP: fix sending stream resulting in zero byte file (#995)
## 2.0.2 - 2016-06-04
- All Ciphers: fix issue with CBC mode / OpenSSL / continuous buffers / decryption (#938)
- Random: fix issues with serialize() (#932)
- RC2: fix issue with decrypting
- RC4: fix issue with key not being truncated correctly
- SFTP: nlist() on a non-existent directory resulted in error
- SFTP: add is_writable, is_writeable, is_readable
- X509: add IPv6 support for subjectaltname extension (#936)
## 2.0.1 - 2016-01-18
- RSA: fix regression in PSS mode ([#769](https://github.com/phpseclib/phpseclib/pull/769))
- RSA: fix issue loading PKCS8 specific keys ([#861](https://github.com/phpseclib/phpseclib/pull/861))
- X509: add getOID() method ([#789](https://github.com/phpseclib/phpseclib/pull/789))
- X509: improve base64-encoded detection rules ([#855](https://github.com/phpseclib/phpseclib/pull/855))
- SFTP: fix quirky behavior with put() ([#830](https://github.com/phpseclib/phpseclib/pull/830))
- SFTP: fix E_NOTICE ([#883](https://github.com/phpseclib/phpseclib/pull/883))
- SFTP/Stream: fix issue with filenames with hashes ([#901](https://github.com/phpseclib/phpseclib/pull/901))
- SSH2: add isAuthenticated() method ([#897](https://github.com/phpseclib/phpseclib/pull/897))
- SSH/Agent: fix possible PHP warning ([#923](https://github.com/phpseclib/phpseclib/issues/923))
- BigInteger: add __debugInfo() magic method ([#881](https://github.com/phpseclib/phpseclib/pull/881))
- BigInteger: fix issue with doing bitwise not on 0
- add getBlockLength() method to symmetric ciphers
## 2.0.0 - 2015-08-04
- Classes were renamed and namespaced ([#243](https://github.com/phpseclib/phpseclib/issues/243))
- The use of an autoloader is now required (e.g. Composer)
## 1.0.20 - 2021-12-28
SFTP:
- speed up uploads (by changing SFTP upload packet size from 4KB to 32KB)
- add support for SFTPv4/5/6
- add enableDatePreservation() / disableDatePreservation() (#1496)
- uploads on low speed networks could get in infinite loop (#1507)
- "fix" rare resource not closed error (#1510)
- progress callback should report actual downloaded bytes (#1543)
- add stream to get method (#1546)
- fix undefined index notice in stream touch() (#1615)
- digit only filenames were converted to integers by php (#1623)
- Stream: make it so you can write past the end of a file (#1618)
- reopen channel on channel closure (#1654)
- don't check SFTP packet size after SFTP initialization (#1606)
- return false if get_channel_packet returns false (#1678)
- timeout during SFTP init should return false (#1684)
- add option to allow arbitrary length packets (#1691)
SSH2:
- add support for zlib and zlib@openssh.com compression
- add "smart multi factor" login mode (enabled by default) (#1648)
- don't try to login as none auth method for CoreFTP server (#1488)
- when building algo list look at if crypto engine is set (#1500)
- suppress 'broken pipe' errors (#1511)
- add setKeepAlive() method (#1529)
- behave like putty with broken publickey auth (#1572)
- don't close channel on unexpected response to channel request (#1631)
- add getAuthMethodsToContinue() method (#1648)
- fix issue with key re-exchange (#1644)
- fix PHP7.4 errors about accessing bool as string (#1656)
- end connection faster for algorithm mismatch
X509:
- really looong base64 encoded strings broke extractBER() (#1486)
- only parse the first cert of a multi-cert PEMs (#1542, #1568)
ASN1:
- fix timezone issue when non-utc time is given (#1562)
- return false when not enough bytes are available (#1676)
RSA:
- ssh-keygen -yf private.key fails if \r is present (#1698)
BigInteger:
- fix issue with toBits on 32-bit PHP 8 installs
Crypt/Base:
- use a custom error handler for mcrypt
## 1.0.19 - 2020-07-07
- SSH2: arcfour128 / arcfour256 were being included twice
- SSH2: make window resizing behave more consistently with PuTTY (#1421)
- SSH2: logging enhancements
- SSH2: try logging in with none as an auth method first (#1454)
- SFTP: change the mode with a SETSTAT instead of MKDIR (#1463)
- SFTP: make it so extending SFTP class doesn't cause a segfault (#1465)
- SFTP: realpath('') produced an error (#1474)
- SFTP: if /path/to/file is a file then /path/to/file/whatever errors (#1475)
- RSA: make PSS verification work for key length that aren't a power of 2 (#1423)
- ASN1: fix for malformed ASN1 strings (#1456)
- ANSI: fix "Number of elements can't be negative" error
## 1.0.18 - 2019-09-16
- SSH2: fix regression for connecting to servers with bad hostnames (#1405)
## 1.0.17 - 2019-09-15
- SSH2: backport setPreferredAlgorithms() / getAlgorithmsNegotiated (#1156)
- SSH2 / SFTP: fix issues with ping() (#1402)
- SSH2: only auto close the channel for exec() timeouts (#1384)
- SSH2 / SFTP: fix issues with ping() (#1402)
- SFTP: add progress callback to get() (#1375)
- SFTP: fix array_merge(): Argument #1 is not an array error (#1379)
- X509: IPs in nameconstraints extension include netmask (#1387)
- X509: fix issue with explicit time tags whose maps expect implicit (#1388)
- BigInteger: fix issues with divide method
- BigInteger: fix bug with toBytes() with fixed precision negative numbers
- fix PHP 7.4 deprecations
## 1.0.16 - 2019-06-13
- BigInteger: new BigInteger('-0') caused issues with GMP
- BigInteger: new BigInteger('00') caused issues with GMP
- BigInteger: GMP engine didn't always return 1 or -1
- ASN1: revamp how OIDs are handled (#1367)
- ASN1: correctly handle long tags
- SSH2: fix issue with reconnecting via ping() (#1353)
- SSH2: close channel when a timeout occurs (#1378)
- SFTP: improve handling of malformed packets (#1371)
- RSA: add support for OpenSSH private keys (#1372)
- RSA: use hash_equals if available
## 1.0.15 - 2019-03-10
- SFTP: make it so get() can correctly handle out of order responses (#1343)
- Crypt: avoid bogus IV errors in ECB mode with OpenSSL (#1087)
- RSA: protect against possible timing attack during OAEP decryption
- RSA: fix possible memory leak with XML keys (#1346)
- Hash: fix issues with the mode
- SCP: issue error if remote_file is empty in put() call (#1335)
- X509: whitelist OID 1.3.6.1.4.1.11129.2.4.2 (#1341)
## 1.0.14 - 2019-01-27
- SSH2: ssh-rsa is sometimes incorrectly used instead of rsa-sha2-256 (#1331)
- SSH2: more strictly adhere to RFC8332 for rsa-sha2-256/512 (#1332)
## 1.0.13 - 2018-12-16
- SSH2: fix order of user_error() / bitmap reset (#1314)
- SSH2: setTimeout(0) didn't work as intended (#1116)
- Agent: add support for rsa-sha2-256 / rsa-sha2-512 (#1319)
- Agent: add parameter to constructor (#1319)
## 1.0.12 - 2018-11-04
- SSH2: fixes relating to delayed global requests (#1271)
- SSH2: setEngine -> setPreferredEngine (#1294)
- SSH2: reset $this->bitmap when the connection fails (#1298)
- SSH2: add ping() method (#1298)
- SSH2: add support for rsa-sha2-256 / rsa-sha2-512 (RFC8332)
- SFTP: make rawlist give same result regardless of stat cache (#1287)
- Hash: save hashed keys for re-use
## 1.0.11 - 2018-04-15
- X509: auto download intermediate certs
- BigInteger: fix for (new BigInteger(48))->toString(true)) (#1264)
- ASN1: class is never set as key in _decode_ber
## 1.0.10 - 2018-02-08
- BigInteger: fix issue with bitwise_xor (#1245)
- Crypt: some of the minimum lengths were off
- SFTP: update stat cache accordingly when file becomes a directory (#1235)
- SFTP: fix issue with extended attributes on 64-bit PHP installs (#1248)
- SSH2: more channel handling updates (#1200)
- X509: use anonymous functions in PHP >= 5.3.0
- X509: revise logic for validateSignature (#1213)
- X509: fix 7.2 error when extensions were removed and new ones added (#1243)
- fix float to int conversions on ARM CPU's (#1220)
## 1.0.9 - 2017-11-29
- SSH2: fix issue with key re-exchange
- SSH2: updates to dealing with extraneous channel packets
- X509: URL validation didn't work (#1203)
## 1.0.8 - 2017-10-22
- SSH2:
- add new READ_NEXT mode (#1140)
- add sendIdentificationStringFirst()
- add sendKEXINITFirst()
- add sendIdentificationStringLast()
- add sendKEXINITLast() (#1162)
- assume any SSH server >= 1.99 supports SSH2 (#1170)
- workaround for bad arcfour256 implementations (#1171)
- don't choke when getting response from diff channel in exec() (#1167)
- SFTP:
- add enablePathCanonicalization()
- add disablePathCanonicalization() (#1137)
- fix put() with remote file stream resource (#1177)
- ANSI: misc fixes (#1150, #1161)
- X509: use DateTime instead of unix time (#1166)
- Ciphers: use eval() instead of create_function() for >= 5.3
## 1.0.7 - 2017-06-05
- Crypt: fix OpenSSL engine on <= PHP 5.3.6 (#1122)
- Random: suppress possible E_DEPRECATED errors
- RSA: reset variables if bad key was loaded
## 1.0.6 - 2017-05-07
- SSH2: don't use timeout value of 0 for fsockopen (#775)
- SSH2: make it so disabling PTY closes exec() channel if it's open (#1009)
- SSH2: include `<pre>` tags in getLog result when SAPI isn't CLI
- SFTP: don't assume current directory when $path parameter for delete is null (#1059)
- SFTP: fix put() with php://input as source (#1119)
- ASN1: fix UTCTime parsing (#1110)
- X509: ignore certificate transparency extension (#1073)
- Crypt: OpenSSL apparently supports variable size keys (#1085)
## 1.0.5 - 2016-10-22
- fix issue preventing installation of 1.0.x via Composer (#1048)
## 1.0.4 - 2016-10-03
- fix E_DEPRECATED errors on PHP 7.0 and 7.1 (#1041)
- fix float to int conversions on 32-bit Linux pre-PHP 5.3 (#1038, #1034)
- SFTP: speed up downloads (#945)
- SFTP: fix infinite loop when uploading empty file (#995)
- ASN1: fix possible infinite loop in decode (#1027)
## 1.0.3 - 2016-08-18
- BigInteger/RSA: don't compare openssl versions > 1.0 (#946)
- RSA: don't attempt to use the CRT when zero value components exist (#980)
- RSA: zero salt length RSA signatures don't work (#1002)
- ASN1: fix PHP Warning on PHP 7.1 (#1013)
- X509: set parameter fields to null for CSR's / RSA (#914)
- CRL optimizations (#1000)
- SSH2: fix "Expected SSH_FXP_STATUS or ..." error (#999)
- SFTP: make symlinks support relative target's (#1004)
- SFTP: fix sending stream resulting in zero byte file (#995)
## 1.0.2 - 2016-05-07
- All Ciphers: fix issue with CBC mode / OpenSSL / continuous buffers / decryption (#938)
- Random: fix issues with serialize() (#932)
- RC2: fix issue with decrypting
- RC4: fix issue with key not being truncated correctly
- SFTP: nlist() on a non-existent directory resulted in error
- SFTP: add is_writable, is_writeable, is_readable
- RSA: fix PHP4 compatibility issue
## 1.0.1 - 2016-01-18
- RSA: fix regression in PSS mode ([#769](https://github.com/phpseclib/phpseclib/pull/769))
- RSA: fix issue loading PKCS8 specific keys ([#861](https://github.com/phpseclib/phpseclib/pull/861))
- X509: add getOID() method ([#789](https://github.com/phpseclib/phpseclib/pull/789))
- X509: improve base64-encoded detection rules ([#855](https://github.com/phpseclib/phpseclib/pull/855))
- SFTP: fix quirky behavior with put() ([#830](https://github.com/phpseclib/phpseclib/pull/830))
- SFTP: fix E_NOTICE ([#883](https://github.com/phpseclib/phpseclib/pull/883))
- SFTP/Stream: fix issue with filenames with hashes ([#901](https://github.com/phpseclib/phpseclib/pull/901))
- SSH2: add isAuthenticated() method ([#897](https://github.com/phpseclib/phpseclib/pull/897))
- SSH/Agent: fix possible PHP warning ([#923](https://github.com/phpseclib/phpseclib/issues/923))
- BigInteger: add __debugInfo() magic method ([#881](https://github.com/phpseclib/phpseclib/pull/881))
- BigInteger: fix issue with doing bitwise not on 0
- add getBlockLength() method to symmetric ciphers
## 1.0.0 - 2015-08-02
- OpenSSL support for symmetric ciphers ([#507](https://github.com/phpseclib/phpseclib/pull/507))
- rewritten vt100 terminal emulator (File_ANSI) ([#689](https://github.com/phpseclib/phpseclib/pull/689))
- agent-forwarding support (System_SSH_Agent) ([#592](https://github.com/phpseclib/phpseclib/pull/592))
- Net_SSH2 improvements
- diffie-hellman-group-exchange-sha1/sha256 support ([#714](https://github.com/phpseclib/phpseclib/pull/714))
- window size handling updates ([#717](https://github.com/phpseclib/phpseclib/pull/717))
- Net_SFTP improvements
- add callback support to put() ([#655](https://github.com/phpseclib/phpseclib/pull/655))
- stat cache fixes ([#743](https://github.com/phpseclib/phpseclib/issues/743), [#730](https://github.com/phpseclib/phpseclib/issues/730), [#709](https://github.com/phpseclib/phpseclib/issues/709), [#726](https://github.com/phpseclib/phpseclib/issues/726))
- add "none" encryption mode to Crypt_RSA ([#692](https://github.com/phpseclib/phpseclib/pull/692))
- misc ASN.1 / X.509 parsing fixes ([#721](https://github.com/phpseclib/phpseclib/pull/721), [#627](https://github.com/phpseclib/phpseclib/pull/627))
- use a random serial number for new X509 certs ([#740](https://github.com/phpseclib/phpseclib/pull/740))
- add getPublicKeyFingerprint() to Crypt_RSA ([#677](https://github.com/phpseclib/phpseclib/pull/677))
## 0.3.10 - 2015-02-04
- simplify SSH2 window size handling ([#538](https://github.com/phpseclib/phpseclib/pull/538))
- slightly relax the conditions under which OpenSSL is used ([#598](https://github.com/phpseclib/phpseclib/pull/598))
- fix issue with empty constructed context-specific tags in ASN1 ([#606](https://github.com/phpseclib/phpseclib/pull/606))
## 0.3.9 - 2014-11-09
- PHP 5.6 improvements ([#482](https://github.com/phpseclib/phpseclib/pull/482), [#491](https://github.com/phpseclib/phpseclib/issues/491))
## 0.3.8 - 2014-09-12
- improve support for indef lengths in File_ASN1
- add hmac-sha2-256 support to Net_SSH2
- make it so negotiated algorithms can be seen before Net_SSH2 login
- add sha256-96 and sha512-96 to Crypt_Hash
- window size handling adjustments in Net_SSH2
## 0.3.7 - 2014-07-05
- auto-detect public vs private keys
- add file_exists, is_dir, is_file, readlink and symlink to Net_SFTP
- add support for recursive nlist and rawlist
- make it so nlist and rawlist can return pre-sorted output
- make it so callback functions can make exec() return early
- add signSPKAC and saveSPKAC methods to File_X509
- add support for PKCS8 keys in Crypt_RSA
- add pbkdf1 support to setPassword() in Crypt_Base
- add getWindowColumns, getWindowRows, setWindowColumns, setWindowRows to Net_SSH2
- add support for filenames with spaces in them to Net_SCP
## 0.3.6 - 2014-02-23
- add preliminary support for custom SSH subsystems
- add ssh-agent support
## 0.3.5 - 2013-07-11
- numerous SFTP changes:
- chown
- chgrp
- truncate
- improved file type detection
- put() can write to the middle of a file
- mkdir accepts the same parameters that PHP's mkdir does
- the ability to upload/download 2GB files
- across-the-board speedups for the various encryption algorithms
- multi-factor authentication support for Net_SSH2
- a $callback parameter for Net_SSH2::exec
- new classes:
- Net_SFTP_StreamWrapper
- Net_SCP
- Crypt_Twofish
- Crypt_Blowfish
## 0.3.1 - 2012-11-20
- add Net_SSH2::enableQuietMode() for suppressing stderr
- add Crypt_RSA::__toString() and Crypt_RSA::getSize()
- fix problems with File_X509::validateDate(), File_X509::sign() and Crypt_RSA::verify()
- use OpenSSL to speed up modular exponention in Math_BigInteger
- improved timeout functionality in Net_SSH2
- add support for SFTPv2
- add support for CRLs in File_X509
- SSH-2.0-SSH doesn't implement hmac-*-96 correctly
## 0.3.0 - 2012-07-08
- add support for reuming Net_SFTP::put()
- add support for recursive deletes and recursive chmods to Net_SFTP
- add setTimeout() to Net_SSH2
- add support for PBKDF2 to the various Crypt_* classes via setPassword()
- add File_X509 and File_ASN1
- add the ability to decode various formats in Crypt_RSA
- make Net_SSH2::getServerPublicHostKey() return a printer-friendly version of the public key
## 0.2.2 - 2011-05-09
- CFB and OFB modes were added to all block ciphers
- support for interactive mode was added to Net_SSH2
- Net_SSH2 now has limited keyboard_interactive authentication support
- support was added for PuTTY formatted RSA private keys and XML formatted RSA private keys
- Crypt_RSA::loadKey() will now try all key types automatically
- add support for AES-128-CBC and DES-EDE3-CFB encrypted RSA private keys
- add Net_SFTP::stat(), Net_SFTP::lstat() and Net_SFTP::rawlist()
- logging was added to Net_SSH1
- the license was changed to the less restrictive MIT license
PK ��$Zs=j�9 9 phpseclib/LICENSEnu �[��� Copyright (c) 2011-2019 TerraFrost and other contributors
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.PK ��$Z�f� phpseclib/BACKERS.mdnu �[��� # Backers
phpseclib ongoing development is made possible by [Tidelift](https://tidelift.com/subscription/pkg/packagist-phpseclib-phpseclib?utm_source=packagist-phpseclib-phpseclib&utm_medium=referral&utm_campaign=readme) and by contributions by users like you. Thank you.
## Backers
- Allan Simon
- [ChargeOver](https://chargeover.com/)
- Raghu Veer Dendukuri
- Zane Hooper
- [Setasign](https://www.setasign.com/)
- [Charles Severance](https://github.com/csev)
- [Rachel Fish](https://github.com/itsrachelfish)
- TharyrokPK ��$Z�#� #� ! phpseclib/phpseclib/File/X509.phpnu �[��� <?php
/**
* Pure-PHP X.509 Parser
*
* PHP version 5
*
* Encode and decode X.509 certificates.
*
* The extensions are from {@link http://tools.ietf.org/html/rfc5280 RFC5280} and
* {@link http://web.archive.org/web/19961027104704/http://www3.netscape.com/eng/security/cert-exts.html Netscape Certificate Extensions}.
*
* Note that loading an X.509 certificate and resaving it may invalidate the signature. The reason being that the signature is based on a
* portion of the certificate that contains optional parameters with default values. ie. if the parameter isn't there the default value is
* used. Problem is, if the parameter is there and it just so happens to have the default value there are two ways that that parameter can
* be encoded. It can be encoded explicitly or left out all together. This would effect the signature value and thus may invalidate the
* the certificate all together unless the certificate is re-signed.
*
* @category File
* @package X509
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2012 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\File;
use phpseclib\Crypt\Hash;
use phpseclib\Crypt\Random;
use phpseclib\Crypt\RSA;
use phpseclib\File\ASN1\Element;
use phpseclib\Math\BigInteger;
use DateTime;
use DateTimeZone;
/**
* Pure-PHP X.509 Parser
*
* @package X509
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class X509
{
/**
* Flag to only accept signatures signed by certificate authorities
*
* Not really used anymore but retained all the same to suppress E_NOTICEs from old installs
*
* @access public
*/
const VALIDATE_SIGNATURE_BY_CA = 1;
/**#@+
* @access public
* @see \phpseclib\File\X509::getDN()
*/
/**
* Return internal array representation
*/
const DN_ARRAY = 0;
/**
* Return string
*/
const DN_STRING = 1;
/**
* Return ASN.1 name string
*/
const DN_ASN1 = 2;
/**
* Return OpenSSL compatible array
*/
const DN_OPENSSL = 3;
/**
* Return canonical ASN.1 RDNs string
*/
const DN_CANON = 4;
/**
* Return name hash for file indexing
*/
const DN_HASH = 5;
/**#@-*/
/**#@+
* @access public
* @see \phpseclib\File\X509::saveX509()
* @see \phpseclib\File\X509::saveCSR()
* @see \phpseclib\File\X509::saveCRL()
*/
/**
* Save as PEM
*
* ie. a base64-encoded PEM with a header and a footer
*/
const FORMAT_PEM = 0;
/**
* Save as DER
*/
const FORMAT_DER = 1;
/**
* Save as a SPKAC
*
* Only works on CSRs. Not currently supported.
*/
const FORMAT_SPKAC = 2;
/**
* Auto-detect the format
*
* Used only by the load*() functions
*/
const FORMAT_AUTO_DETECT = 3;
/**#@-*/
/**
* Attribute value disposition.
* If disposition is >= 0, this is the index of the target value.
*/
const ATTR_ALL = -1; // All attribute values (array).
const ATTR_APPEND = -2; // Add a value.
const ATTR_REPLACE = -3; // Clear first, then add a value.
/**
* ASN.1 syntax for X.509 certificates
*
* @var array
* @access private
*/
var $Certificate;
/**#@+
* ASN.1 syntax for various extensions
*
* @access private
*/
var $DirectoryString;
var $PKCS9String;
var $AttributeValue;
var $Extensions;
var $KeyUsage;
var $ExtKeyUsageSyntax;
var $BasicConstraints;
var $KeyIdentifier;
var $CRLDistributionPoints;
var $AuthorityKeyIdentifier;
var $CertificatePolicies;
var $AuthorityInfoAccessSyntax;
var $SubjectInfoAccessSyntax;
var $SubjectAltName;
var $SubjectDirectoryAttributes;
var $PrivateKeyUsagePeriod;
var $IssuerAltName;
var $PolicyMappings;
var $NameConstraints;
var $CPSuri;
var $UserNotice;
var $netscape_cert_type;
var $netscape_comment;
var $netscape_ca_policy_url;
var $Name;
var $RelativeDistinguishedName;
var $CRLNumber;
var $CRLReason;
var $IssuingDistributionPoint;
var $InvalidityDate;
var $CertificateIssuer;
var $HoldInstructionCode;
var $SignedPublicKeyAndChallenge;
/**#@-*/
/**#@+
* ASN.1 syntax for various DN attributes
*
* @access private
*/
var $PostalAddress;
/**#@-*/
/**
* ASN.1 syntax for Certificate Signing Requests (RFC2986)
*
* @var array
* @access private
*/
var $CertificationRequest;
/**
* ASN.1 syntax for Certificate Revocation Lists (RFC5280)
*
* @var array
* @access private
*/
var $CertificateList;
/**
* Distinguished Name
*
* @var array
* @access private
*/
var $dn;
/**
* Public key
*
* @var string
* @access private
*/
var $publicKey;
/**
* Private key
*
* @var string
* @access private
*/
var $privateKey;
/**
* Object identifiers for X.509 certificates
*
* @var array
* @access private
* @link http://en.wikipedia.org/wiki/Object_identifier
*/
var $oids;
/**
* The certificate authorities
*
* @var array
* @access private
*/
var $CAs;
/**
* The currently loaded certificate
*
* @var array
* @access private
*/
var $currentCert;
/**
* The signature subject
*
* There's no guarantee \phpseclib\File\X509 is going to re-encode an X.509 cert in the same way it was originally
* encoded so we take save the portion of the original cert that the signature would have made for.
*
* @var string
* @access private
*/
var $signatureSubject;
/**
* Certificate Start Date
*
* @var string
* @access private
*/
var $startDate;
/**
* Certificate End Date
*
* @var string
* @access private
*/
var $endDate;
/**
* Serial Number
*
* @var string
* @access private
*/
var $serialNumber;
/**
* Key Identifier
*
* See {@link http://tools.ietf.org/html/rfc5280#section-4.2.1.1 RFC5280#section-4.2.1.1} and
* {@link http://tools.ietf.org/html/rfc5280#section-4.2.1.2 RFC5280#section-4.2.1.2}.
*
* @var string
* @access private
*/
var $currentKeyIdentifier;
/**
* CA Flag
*
* @var bool
* @access private
*/
var $caFlag = false;
/**
* SPKAC Challenge
*
* @var string
* @access private
*/
var $challenge;
/**
* Recursion Limit
*
* @var int
* @access private
*/
static $recur_limit = 5;
/**
* URL fetch flag
*
* @var bool
* @access private
*/
static $disable_url_fetch = false;
/**
* Default Constructor.
*
* @return \phpseclib\File\X509
* @access public
*/
function __construct()
{
// Explicitly Tagged Module, 1988 Syntax
// http://tools.ietf.org/html/rfc5280#appendix-A.1
$this->DirectoryString = array(
'type' => ASN1::TYPE_CHOICE,
'children' => array(
'teletexString' => array('type' => ASN1::TYPE_TELETEX_STRING),
'printableString' => array('type' => ASN1::TYPE_PRINTABLE_STRING),
'universalString' => array('type' => ASN1::TYPE_UNIVERSAL_STRING),
'utf8String' => array('type' => ASN1::TYPE_UTF8_STRING),
'bmpString' => array('type' => ASN1::TYPE_BMP_STRING)
)
);
$this->PKCS9String = array(
'type' => ASN1::TYPE_CHOICE,
'children' => array(
'ia5String' => array('type' => ASN1::TYPE_IA5_STRING),
'directoryString' => $this->DirectoryString
)
);
$this->AttributeValue = array('type' => ASN1::TYPE_ANY);
$AttributeType = array('type' => ASN1::TYPE_OBJECT_IDENTIFIER);
$AttributeTypeAndValue = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'type' => $AttributeType,
'value'=> $this->AttributeValue
)
);
/*
In practice, RDNs containing multiple name-value pairs (called "multivalued RDNs") are rare,
but they can be useful at times when either there is no unique attribute in the entry or you
want to ensure that the entry's DN contains some useful identifying information.
- https://www.opends.org/wiki/page/DefinitionRelativeDistinguishedName
*/
$this->RelativeDistinguishedName = array(
'type' => ASN1::TYPE_SET,
'min' => 1,
'max' => -1,
'children' => $AttributeTypeAndValue
);
// http://tools.ietf.org/html/rfc5280#section-4.1.2.4
$RDNSequence = array(
'type' => ASN1::TYPE_SEQUENCE,
// RDNSequence does not define a min or a max, which means it doesn't have one
'min' => 0,
'max' => -1,
'children' => $this->RelativeDistinguishedName
);
$this->Name = array(
'type' => ASN1::TYPE_CHOICE,
'children' => array(
'rdnSequence' => $RDNSequence
)
);
// http://tools.ietf.org/html/rfc5280#section-4.1.1.2
$AlgorithmIdentifier = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'algorithm' => array('type' => ASN1::TYPE_OBJECT_IDENTIFIER),
'parameters' => array(
'type' => ASN1::TYPE_ANY,
'optional' => true
)
)
);
/*
A certificate using system MUST reject the certificate if it encounters
a critical extension it does not recognize; however, a non-critical
extension may be ignored if it is not recognized.
http://tools.ietf.org/html/rfc5280#section-4.2
*/
$Extension = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'extnId' => array('type' => ASN1::TYPE_OBJECT_IDENTIFIER),
'critical' => array(
'type' => ASN1::TYPE_BOOLEAN,
'optional' => true,
'default' => false
),
'extnValue' => array('type' => ASN1::TYPE_OCTET_STRING)
)
);
$this->Extensions = array(
'type' => ASN1::TYPE_SEQUENCE,
'min' => 1,
// technically, it's MAX, but we'll assume anything < 0 is MAX
'max' => -1,
// if 'children' isn't an array then 'min' and 'max' must be defined
'children' => $Extension
);
$SubjectPublicKeyInfo = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'algorithm' => $AlgorithmIdentifier,
'subjectPublicKey' => array('type' => ASN1::TYPE_BIT_STRING)
)
);
$UniqueIdentifier = array('type' => ASN1::TYPE_BIT_STRING);
$Time = array(
'type' => ASN1::TYPE_CHOICE,
'children' => array(
'utcTime' => array('type' => ASN1::TYPE_UTC_TIME),
'generalTime' => array('type' => ASN1::TYPE_GENERALIZED_TIME)
)
);
// http://tools.ietf.org/html/rfc5280#section-4.1.2.5
$Validity = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'notBefore' => $Time,
'notAfter' => $Time
)
);
$CertificateSerialNumber = array('type' => ASN1::TYPE_INTEGER);
$Version = array(
'type' => ASN1::TYPE_INTEGER,
'mapping' => array('v1', 'v2', 'v3')
);
// assert($TBSCertificate['children']['signature'] == $Certificate['children']['signatureAlgorithm'])
$TBSCertificate = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
// technically, default implies optional, but we'll define it as being optional, none-the-less, just to
// reenforce that fact
'version' => array(
'constant' => 0,
'optional' => true,
'explicit' => true,
'default' => 'v1'
) + $Version,
'serialNumber' => $CertificateSerialNumber,
'signature' => $AlgorithmIdentifier,
'issuer' => $this->Name,
'validity' => $Validity,
'subject' => $this->Name,
'subjectPublicKeyInfo' => $SubjectPublicKeyInfo,
// implicit means that the T in the TLV structure is to be rewritten, regardless of the type
'issuerUniqueID' => array(
'constant' => 1,
'optional' => true,
'implicit' => true
) + $UniqueIdentifier,
'subjectUniqueID' => array(
'constant' => 2,
'optional' => true,
'implicit' => true
) + $UniqueIdentifier,
// <http://tools.ietf.org/html/rfc2459#page-74> doesn't use the EXPLICIT keyword but if
// it's not IMPLICIT, it's EXPLICIT
'extensions' => array(
'constant' => 3,
'optional' => true,
'explicit' => true
) + $this->Extensions
)
);
$this->Certificate = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'tbsCertificate' => $TBSCertificate,
'signatureAlgorithm' => $AlgorithmIdentifier,
'signature' => array('type' => ASN1::TYPE_BIT_STRING)
)
);
$this->KeyUsage = array(
'type' => ASN1::TYPE_BIT_STRING,
'mapping' => array(
'digitalSignature',
'nonRepudiation',
'keyEncipherment',
'dataEncipherment',
'keyAgreement',
'keyCertSign',
'cRLSign',
'encipherOnly',
'decipherOnly'
)
);
$this->BasicConstraints = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'cA' => array(
'type' => ASN1::TYPE_BOOLEAN,
'optional' => true,
'default' => false
),
'pathLenConstraint' => array(
'type' => ASN1::TYPE_INTEGER,
'optional' => true
)
)
);
$this->KeyIdentifier = array('type' => ASN1::TYPE_OCTET_STRING);
$OrganizationalUnitNames = array(
'type' => ASN1::TYPE_SEQUENCE,
'min' => 1,
'max' => 4, // ub-organizational-units
'children' => array('type' => ASN1::TYPE_PRINTABLE_STRING)
);
$PersonalName = array(
'type' => ASN1::TYPE_SET,
'children' => array(
'surname' => array(
'type' => ASN1::TYPE_PRINTABLE_STRING,
'constant' => 0,
'optional' => true,
'implicit' => true
),
'given-name' => array(
'type' => ASN1::TYPE_PRINTABLE_STRING,
'constant' => 1,
'optional' => true,
'implicit' => true
),
'initials' => array(
'type' => ASN1::TYPE_PRINTABLE_STRING,
'constant' => 2,
'optional' => true,
'implicit' => true
),
'generation-qualifier' => array(
'type' => ASN1::TYPE_PRINTABLE_STRING,
'constant' => 3,
'optional' => true,
'implicit' => true
)
)
);
$NumericUserIdentifier = array('type' => ASN1::TYPE_NUMERIC_STRING);
$OrganizationName = array('type' => ASN1::TYPE_PRINTABLE_STRING);
$PrivateDomainName = array(
'type' => ASN1::TYPE_CHOICE,
'children' => array(
'numeric' => array('type' => ASN1::TYPE_NUMERIC_STRING),
'printable' => array('type' => ASN1::TYPE_PRINTABLE_STRING)
)
);
$TerminalIdentifier = array('type' => ASN1::TYPE_PRINTABLE_STRING);
$NetworkAddress = array('type' => ASN1::TYPE_NUMERIC_STRING);
$AdministrationDomainName = array(
'type' => ASN1::TYPE_CHOICE,
// if class isn't present it's assumed to be \phpseclib\File\ASN1::CLASS_UNIVERSAL or
// (if constant is present) \phpseclib\File\ASN1::CLASS_CONTEXT_SPECIFIC
'class' => ASN1::CLASS_APPLICATION,
'cast' => 2,
'children' => array(
'numeric' => array('type' => ASN1::TYPE_NUMERIC_STRING),
'printable' => array('type' => ASN1::TYPE_PRINTABLE_STRING)
)
);
$CountryName = array(
'type' => ASN1::TYPE_CHOICE,
// if class isn't present it's assumed to be \phpseclib\File\ASN1::CLASS_UNIVERSAL or
// (if constant is present) \phpseclib\File\ASN1::CLASS_CONTEXT_SPECIFIC
'class' => ASN1::CLASS_APPLICATION,
'cast' => 1,
'children' => array(
'x121-dcc-code' => array('type' => ASN1::TYPE_NUMERIC_STRING),
'iso-3166-alpha2-code' => array('type' => ASN1::TYPE_PRINTABLE_STRING)
)
);
$AnotherName = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'type-id' => array('type' => ASN1::TYPE_OBJECT_IDENTIFIER),
'value' => array(
'type' => ASN1::TYPE_ANY,
'constant' => 0,
'optional' => true,
'explicit' => true
)
)
);
$ExtensionAttribute = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'extension-attribute-type' => array(
'type' => ASN1::TYPE_PRINTABLE_STRING,
'constant' => 0,
'optional' => true,
'implicit' => true
),
'extension-attribute-value' => array(
'type' => ASN1::TYPE_ANY,
'constant' => 1,
'optional' => true,
'explicit' => true
)
)
);
$ExtensionAttributes = array(
'type' => ASN1::TYPE_SET,
'min' => 1,
'max' => 256, // ub-extension-attributes
'children' => $ExtensionAttribute
);
$BuiltInDomainDefinedAttribute = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'type' => array('type' => ASN1::TYPE_PRINTABLE_STRING),
'value' => array('type' => ASN1::TYPE_PRINTABLE_STRING)
)
);
$BuiltInDomainDefinedAttributes = array(
'type' => ASN1::TYPE_SEQUENCE,
'min' => 1,
'max' => 4, // ub-domain-defined-attributes
'children' => $BuiltInDomainDefinedAttribute
);
$BuiltInStandardAttributes = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'country-name' => array('optional' => true) + $CountryName,
'administration-domain-name' => array('optional' => true) + $AdministrationDomainName,
'network-address' => array(
'constant' => 0,
'optional' => true,
'implicit' => true
) + $NetworkAddress,
'terminal-identifier' => array(
'constant' => 1,
'optional' => true,
'implicit' => true
) + $TerminalIdentifier,
'private-domain-name' => array(
'constant' => 2,
'optional' => true,
'explicit' => true
) + $PrivateDomainName,
'organization-name' => array(
'constant' => 3,
'optional' => true,
'implicit' => true
) + $OrganizationName,
'numeric-user-identifier' => array(
'constant' => 4,
'optional' => true,
'implicit' => true
) + $NumericUserIdentifier,
'personal-name' => array(
'constant' => 5,
'optional' => true,
'implicit' => true
) + $PersonalName,
'organizational-unit-names' => array(
'constant' => 6,
'optional' => true,
'implicit' => true
) + $OrganizationalUnitNames
)
);
$ORAddress = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'built-in-standard-attributes' => $BuiltInStandardAttributes,
'built-in-domain-defined-attributes' => array('optional' => true) + $BuiltInDomainDefinedAttributes,
'extension-attributes' => array('optional' => true) + $ExtensionAttributes
)
);
$EDIPartyName = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'nameAssigner' => array(
'constant' => 0,
'optional' => true,
'implicit' => true
) + $this->DirectoryString,
// partyName is technically required but \phpseclib\File\ASN1 doesn't currently support non-optional constants and
// setting it to optional gets the job done in any event.
'partyName' => array(
'constant' => 1,
'optional' => true,
'implicit' => true
) + $this->DirectoryString
)
);
$GeneralName = array(
'type' => ASN1::TYPE_CHOICE,
'children' => array(
'otherName' => array(
'constant' => 0,
'optional' => true,
'implicit' => true
) + $AnotherName,
'rfc822Name' => array(
'type' => ASN1::TYPE_IA5_STRING,
'constant' => 1,
'optional' => true,
'implicit' => true
),
'dNSName' => array(
'type' => ASN1::TYPE_IA5_STRING,
'constant' => 2,
'optional' => true,
'implicit' => true
),
'x400Address' => array(
'constant' => 3,
'optional' => true,
'implicit' => true
) + $ORAddress,
'directoryName' => array(
'constant' => 4,
'optional' => true,
'explicit' => true
) + $this->Name,
'ediPartyName' => array(
'constant' => 5,
'optional' => true,
'implicit' => true
) + $EDIPartyName,
'uniformResourceIdentifier' => array(
'type' => ASN1::TYPE_IA5_STRING,
'constant' => 6,
'optional' => true,
'implicit' => true
),
'iPAddress' => array(
'type' => ASN1::TYPE_OCTET_STRING,
'constant' => 7,
'optional' => true,
'implicit' => true
),
'registeredID' => array(
'type' => ASN1::TYPE_OBJECT_IDENTIFIER,
'constant' => 8,
'optional' => true,
'implicit' => true
)
)
);
$GeneralNames = array(
'type' => ASN1::TYPE_SEQUENCE,
'min' => 1,
'max' => -1,
'children' => $GeneralName
);
$this->IssuerAltName = $GeneralNames;
$ReasonFlags = array(
'type' => ASN1::TYPE_BIT_STRING,
'mapping' => array(
'unused',
'keyCompromise',
'cACompromise',
'affiliationChanged',
'superseded',
'cessationOfOperation',
'certificateHold',
'privilegeWithdrawn',
'aACompromise'
)
);
$DistributionPointName = array(
'type' => ASN1::TYPE_CHOICE,
'children' => array(
'fullName' => array(
'constant' => 0,
'optional' => true,
'implicit' => true
) + $GeneralNames,
'nameRelativeToCRLIssuer' => array(
'constant' => 1,
'optional' => true,
'implicit' => true
) + $this->RelativeDistinguishedName
)
);
$DistributionPoint = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'distributionPoint' => array(
'constant' => 0,
'optional' => true,
'explicit' => true
) + $DistributionPointName,
'reasons' => array(
'constant' => 1,
'optional' => true,
'implicit' => true
) + $ReasonFlags,
'cRLIssuer' => array(
'constant' => 2,
'optional' => true,
'implicit' => true
) + $GeneralNames
)
);
$this->CRLDistributionPoints = array(
'type' => ASN1::TYPE_SEQUENCE,
'min' => 1,
'max' => -1,
'children' => $DistributionPoint
);
$this->AuthorityKeyIdentifier = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'keyIdentifier' => array(
'constant' => 0,
'optional' => true,
'implicit' => true
) + $this->KeyIdentifier,
'authorityCertIssuer' => array(
'constant' => 1,
'optional' => true,
'implicit' => true
) + $GeneralNames,
'authorityCertSerialNumber' => array(
'constant' => 2,
'optional' => true,
'implicit' => true
) + $CertificateSerialNumber
)
);
$PolicyQualifierId = array('type' => ASN1::TYPE_OBJECT_IDENTIFIER);
$PolicyQualifierInfo = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'policyQualifierId' => $PolicyQualifierId,
'qualifier' => array('type' => ASN1::TYPE_ANY)
)
);
$CertPolicyId = array('type' => ASN1::TYPE_OBJECT_IDENTIFIER);
$PolicyInformation = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'policyIdentifier' => $CertPolicyId,
'policyQualifiers' => array(
'type' => ASN1::TYPE_SEQUENCE,
'min' => 0,
'max' => -1,
'optional' => true,
'children' => $PolicyQualifierInfo
)
)
);
$this->CertificatePolicies = array(
'type' => ASN1::TYPE_SEQUENCE,
'min' => 1,
'max' => -1,
'children' => $PolicyInformation
);
$this->PolicyMappings = array(
'type' => ASN1::TYPE_SEQUENCE,
'min' => 1,
'max' => -1,
'children' => array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'issuerDomainPolicy' => $CertPolicyId,
'subjectDomainPolicy' => $CertPolicyId
)
)
);
$KeyPurposeId = array('type' => ASN1::TYPE_OBJECT_IDENTIFIER);
$this->ExtKeyUsageSyntax = array(
'type' => ASN1::TYPE_SEQUENCE,
'min' => 1,
'max' => -1,
'children' => $KeyPurposeId
);
$AccessDescription = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'accessMethod' => array('type' => ASN1::TYPE_OBJECT_IDENTIFIER),
'accessLocation' => $GeneralName
)
);
$this->AuthorityInfoAccessSyntax = array(
'type' => ASN1::TYPE_SEQUENCE,
'min' => 1,
'max' => -1,
'children' => $AccessDescription
);
$this->SubjectInfoAccessSyntax = array(
'type' => ASN1::TYPE_SEQUENCE,
'min' => 1,
'max' => -1,
'children' => $AccessDescription
);
$this->SubjectAltName = $GeneralNames;
$this->PrivateKeyUsagePeriod = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'notBefore' => array(
'constant' => 0,
'optional' => true,
'implicit' => true,
'type' => ASN1::TYPE_GENERALIZED_TIME),
'notAfter' => array(
'constant' => 1,
'optional' => true,
'implicit' => true,
'type' => ASN1::TYPE_GENERALIZED_TIME)
)
);
$BaseDistance = array('type' => ASN1::TYPE_INTEGER);
$GeneralSubtree = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'base' => $GeneralName,
'minimum' => array(
'constant' => 0,
'optional' => true,
'implicit' => true,
'default' => new BigInteger(0)
) + $BaseDistance,
'maximum' => array(
'constant' => 1,
'optional' => true,
'implicit' => true,
) + $BaseDistance
)
);
$GeneralSubtrees = array(
'type' => ASN1::TYPE_SEQUENCE,
'min' => 1,
'max' => -1,
'children' => $GeneralSubtree
);
$this->NameConstraints = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'permittedSubtrees' => array(
'constant' => 0,
'optional' => true,
'implicit' => true
) + $GeneralSubtrees,
'excludedSubtrees' => array(
'constant' => 1,
'optional' => true,
'implicit' => true
) + $GeneralSubtrees
)
);
$this->CPSuri = array('type' => ASN1::TYPE_IA5_STRING);
$DisplayText = array(
'type' => ASN1::TYPE_CHOICE,
'children' => array(
'ia5String' => array('type' => ASN1::TYPE_IA5_STRING),
'visibleString' => array('type' => ASN1::TYPE_VISIBLE_STRING),
'bmpString' => array('type' => ASN1::TYPE_BMP_STRING),
'utf8String' => array('type' => ASN1::TYPE_UTF8_STRING)
)
);
$NoticeReference = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'organization' => $DisplayText,
'noticeNumbers' => array(
'type' => ASN1::TYPE_SEQUENCE,
'min' => 1,
'max' => 200,
'children' => array('type' => ASN1::TYPE_INTEGER)
)
)
);
$this->UserNotice = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'noticeRef' => array(
'optional' => true,
'implicit' => true
) + $NoticeReference,
'explicitText' => array(
'optional' => true,
'implicit' => true
) + $DisplayText
)
);
// mapping is from <http://www.mozilla.org/projects/security/pki/nss/tech-notes/tn3.html>
$this->netscape_cert_type = array(
'type' => ASN1::TYPE_BIT_STRING,
'mapping' => array(
'SSLClient',
'SSLServer',
'Email',
'ObjectSigning',
'Reserved',
'SSLCA',
'EmailCA',
'ObjectSigningCA'
)
);
$this->netscape_comment = array('type' => ASN1::TYPE_IA5_STRING);
$this->netscape_ca_policy_url = array('type' => ASN1::TYPE_IA5_STRING);
// attribute is used in RFC2986 but we're using the RFC5280 definition
$Attribute = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'type' => $AttributeType,
'value'=> array(
'type' => ASN1::TYPE_SET,
'min' => 1,
'max' => -1,
'children' => $this->AttributeValue
)
)
);
$this->SubjectDirectoryAttributes = array(
'type' => ASN1::TYPE_SEQUENCE,
'min' => 1,
'max' => -1,
'children' => $Attribute
);
// adapted from <http://tools.ietf.org/html/rfc2986>
$Attributes = array(
'type' => ASN1::TYPE_SET,
'min' => 1,
'max' => -1,
'children' => $Attribute
);
$CertificationRequestInfo = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'version' => array(
'type' => ASN1::TYPE_INTEGER,
'mapping' => array('v1')
),
'subject' => $this->Name,
'subjectPKInfo' => $SubjectPublicKeyInfo,
'attributes' => array(
'constant' => 0,
'optional' => true,
'implicit' => true
) + $Attributes,
)
);
$this->CertificationRequest = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'certificationRequestInfo' => $CertificationRequestInfo,
'signatureAlgorithm' => $AlgorithmIdentifier,
'signature' => array('type' => ASN1::TYPE_BIT_STRING)
)
);
$RevokedCertificate = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'userCertificate' => $CertificateSerialNumber,
'revocationDate' => $Time,
'crlEntryExtensions' => array(
'optional' => true
) + $this->Extensions
)
);
$TBSCertList = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'version' => array(
'optional' => true,
'default' => 'v1'
) + $Version,
'signature' => $AlgorithmIdentifier,
'issuer' => $this->Name,
'thisUpdate' => $Time,
'nextUpdate' => array(
'optional' => true
) + $Time,
'revokedCertificates' => array(
'type' => ASN1::TYPE_SEQUENCE,
'optional' => true,
'min' => 0,
'max' => -1,
'children' => $RevokedCertificate
),
'crlExtensions' => array(
'constant' => 0,
'optional' => true,
'explicit' => true
) + $this->Extensions
)
);
$this->CertificateList = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'tbsCertList' => $TBSCertList,
'signatureAlgorithm' => $AlgorithmIdentifier,
'signature' => array('type' => ASN1::TYPE_BIT_STRING)
)
);
$this->CRLNumber = array('type' => ASN1::TYPE_INTEGER);
$this->CRLReason = array('type' => ASN1::TYPE_ENUMERATED,
'mapping' => array(
'unspecified',
'keyCompromise',
'cACompromise',
'affiliationChanged',
'superseded',
'cessationOfOperation',
'certificateHold',
// Value 7 is not used.
8 => 'removeFromCRL',
'privilegeWithdrawn',
'aACompromise'
)
);
$this->IssuingDistributionPoint = array('type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'distributionPoint' => array(
'constant' => 0,
'optional' => true,
'explicit' => true
) + $DistributionPointName,
'onlyContainsUserCerts' => array(
'type' => ASN1::TYPE_BOOLEAN,
'constant' => 1,
'optional' => true,
'default' => false,
'implicit' => true
),
'onlyContainsCACerts' => array(
'type' => ASN1::TYPE_BOOLEAN,
'constant' => 2,
'optional' => true,
'default' => false,
'implicit' => true
),
'onlySomeReasons' => array(
'constant' => 3,
'optional' => true,
'implicit' => true
) + $ReasonFlags,
'indirectCRL' => array(
'type' => ASN1::TYPE_BOOLEAN,
'constant' => 4,
'optional' => true,
'default' => false,
'implicit' => true
),
'onlyContainsAttributeCerts' => array(
'type' => ASN1::TYPE_BOOLEAN,
'constant' => 5,
'optional' => true,
'default' => false,
'implicit' => true
)
)
);
$this->InvalidityDate = array('type' => ASN1::TYPE_GENERALIZED_TIME);
$this->CertificateIssuer = $GeneralNames;
$this->HoldInstructionCode = array('type' => ASN1::TYPE_OBJECT_IDENTIFIER);
$PublicKeyAndChallenge = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'spki' => $SubjectPublicKeyInfo,
'challenge' => array('type' => ASN1::TYPE_IA5_STRING)
)
);
$this->SignedPublicKeyAndChallenge = array(
'type' => ASN1::TYPE_SEQUENCE,
'children' => array(
'publicKeyAndChallenge' => $PublicKeyAndChallenge,
'signatureAlgorithm' => $AlgorithmIdentifier,
'signature' => array('type' => ASN1::TYPE_BIT_STRING)
)
);
$this->PostalAddress = array(
'type' => ASN1::TYPE_SEQUENCE,
'optional' => true,
'min' => 1,
'max' => -1,
'children' => $this->DirectoryString
);
// OIDs from RFC5280 and those RFCs mentioned in RFC5280#section-4.1.1.2
$this->oids = array(
'1.3.6.1.5.5.7' => 'id-pkix',
'1.3.6.1.5.5.7.1' => 'id-pe',
'1.3.6.1.5.5.7.2' => 'id-qt',
'1.3.6.1.5.5.7.3' => 'id-kp',
'1.3.6.1.5.5.7.48' => 'id-ad',
'1.3.6.1.5.5.7.2.1' => 'id-qt-cps',
'1.3.6.1.5.5.7.2.2' => 'id-qt-unotice',
'1.3.6.1.5.5.7.48.1' =>'id-ad-ocsp',
'1.3.6.1.5.5.7.48.2' => 'id-ad-caIssuers',
'1.3.6.1.5.5.7.48.3' => 'id-ad-timeStamping',
'1.3.6.1.5.5.7.48.5' => 'id-ad-caRepository',
'2.5.4' => 'id-at',
'2.5.4.41' => 'id-at-name',
'2.5.4.4' => 'id-at-surname',
'2.5.4.42' => 'id-at-givenName',
'2.5.4.43' => 'id-at-initials',
'2.5.4.44' => 'id-at-generationQualifier',
'2.5.4.3' => 'id-at-commonName',
'2.5.4.7' => 'id-at-localityName',
'2.5.4.8' => 'id-at-stateOrProvinceName',
'2.5.4.10' => 'id-at-organizationName',
'2.5.4.11' => 'id-at-organizationalUnitName',
'2.5.4.12' => 'id-at-title',
'2.5.4.13' => 'id-at-description',
'2.5.4.46' => 'id-at-dnQualifier',
'2.5.4.6' => 'id-at-countryName',
'2.5.4.5' => 'id-at-serialNumber',
'2.5.4.65' => 'id-at-pseudonym',
'2.5.4.17' => 'id-at-postalCode',
'2.5.4.9' => 'id-at-streetAddress',
'2.5.4.45' => 'id-at-uniqueIdentifier',
'2.5.4.72' => 'id-at-role',
'2.5.4.16' => 'id-at-postalAddress',
'0.9.2342.19200300.100.1.25' => 'id-domainComponent',
'1.2.840.113549.1.9' => 'pkcs-9',
'1.2.840.113549.1.9.1' => 'pkcs-9-at-emailAddress',
'2.5.29' => 'id-ce',
'2.5.29.35' => 'id-ce-authorityKeyIdentifier',
'2.5.29.14' => 'id-ce-subjectKeyIdentifier',
'2.5.29.15' => 'id-ce-keyUsage',
'2.5.29.16' => 'id-ce-privateKeyUsagePeriod',
'2.5.29.32' => 'id-ce-certificatePolicies',
'2.5.29.32.0' => 'anyPolicy',
'2.5.29.33' => 'id-ce-policyMappings',
'2.5.29.17' => 'id-ce-subjectAltName',
'2.5.29.18' => 'id-ce-issuerAltName',
'2.5.29.9' => 'id-ce-subjectDirectoryAttributes',
'2.5.29.19' => 'id-ce-basicConstraints',
'2.5.29.30' => 'id-ce-nameConstraints',
'2.5.29.36' => 'id-ce-policyConstraints',
'2.5.29.31' => 'id-ce-cRLDistributionPoints',
'2.5.29.37' => 'id-ce-extKeyUsage',
'2.5.29.37.0' => 'anyExtendedKeyUsage',
'1.3.6.1.5.5.7.3.1' => 'id-kp-serverAuth',
'1.3.6.1.5.5.7.3.2' => 'id-kp-clientAuth',
'1.3.6.1.5.5.7.3.3' => 'id-kp-codeSigning',
'1.3.6.1.5.5.7.3.4' => 'id-kp-emailProtection',
'1.3.6.1.5.5.7.3.8' => 'id-kp-timeStamping',
'1.3.6.1.5.5.7.3.9' => 'id-kp-OCSPSigning',
'2.5.29.54' => 'id-ce-inhibitAnyPolicy',
'2.5.29.46' => 'id-ce-freshestCRL',
'1.3.6.1.5.5.7.1.1' => 'id-pe-authorityInfoAccess',
'1.3.6.1.5.5.7.1.11' => 'id-pe-subjectInfoAccess',
'2.5.29.20' => 'id-ce-cRLNumber',
'2.5.29.28' => 'id-ce-issuingDistributionPoint',
'2.5.29.27' => 'id-ce-deltaCRLIndicator',
'2.5.29.21' => 'id-ce-cRLReasons',
'2.5.29.29' => 'id-ce-certificateIssuer',
'2.5.29.23' => 'id-ce-holdInstructionCode',
'1.2.840.10040.2' => 'holdInstruction',
'1.2.840.10040.2.1' => 'id-holdinstruction-none',
'1.2.840.10040.2.2' => 'id-holdinstruction-callissuer',
'1.2.840.10040.2.3' => 'id-holdinstruction-reject',
'2.5.29.24' => 'id-ce-invalidityDate',
'1.2.840.113549.2.2' => 'md2',
'1.2.840.113549.2.5' => 'md5',
'1.3.14.3.2.26' => 'id-sha1',
'1.2.840.10040.4.1' => 'id-dsa',
'1.2.840.10040.4.3' => 'id-dsa-with-sha1',
'1.2.840.113549.1.1' => 'pkcs-1',
'1.2.840.113549.1.1.1' => 'rsaEncryption',
'1.2.840.113549.1.1.2' => 'md2WithRSAEncryption',
'1.2.840.113549.1.1.4' => 'md5WithRSAEncryption',
'1.2.840.113549.1.1.5' => 'sha1WithRSAEncryption',
'1.2.840.10046.2.1' => 'dhpublicnumber',
'2.16.840.1.101.2.1.1.22' => 'id-keyExchangeAlgorithm',
'1.2.840.10045' => 'ansi-X9-62',
'1.2.840.10045.4' => 'id-ecSigType',
'1.2.840.10045.4.1' => 'ecdsa-with-SHA1',
'1.2.840.10045.1' => 'id-fieldType',
'1.2.840.10045.1.1' => 'prime-field',
'1.2.840.10045.1.2' => 'characteristic-two-field',
'1.2.840.10045.1.2.3' => 'id-characteristic-two-basis',
'1.2.840.10045.1.2.3.1' => 'gnBasis',
'1.2.840.10045.1.2.3.2' => 'tpBasis',
'1.2.840.10045.1.2.3.3' => 'ppBasis',
'1.2.840.10045.2' => 'id-publicKeyType',
'1.2.840.10045.2.1' => 'id-ecPublicKey',
'1.2.840.10045.3' => 'ellipticCurve',
'1.2.840.10045.3.0' => 'c-TwoCurve',
'1.2.840.10045.3.0.1' => 'c2pnb163v1',
'1.2.840.10045.3.0.2' => 'c2pnb163v2',
'1.2.840.10045.3.0.3' => 'c2pnb163v3',
'1.2.840.10045.3.0.4' => 'c2pnb176w1',
'1.2.840.10045.3.0.5' => 'c2pnb191v1',
'1.2.840.10045.3.0.6' => 'c2pnb191v2',
'1.2.840.10045.3.0.7' => 'c2pnb191v3',
'1.2.840.10045.3.0.8' => 'c2pnb191v4',
'1.2.840.10045.3.0.9' => 'c2pnb191v5',
'1.2.840.10045.3.0.10' => 'c2pnb208w1',
'1.2.840.10045.3.0.11' => 'c2pnb239v1',
'1.2.840.10045.3.0.12' => 'c2pnb239v2',
'1.2.840.10045.3.0.13' => 'c2pnb239v3',
'1.2.840.10045.3.0.14' => 'c2pnb239v4',
'1.2.840.10045.3.0.15' => 'c2pnb239v5',
'1.2.840.10045.3.0.16' => 'c2pnb272w1',
'1.2.840.10045.3.0.17' => 'c2pnb304w1',
'1.2.840.10045.3.0.18' => 'c2pnb359v1',
'1.2.840.10045.3.0.19' => 'c2pnb368w1',
'1.2.840.10045.3.0.20' => 'c2pnb431r1',
'1.2.840.10045.3.1' => 'primeCurve',
'1.2.840.10045.3.1.1' => 'prime192v1',
'1.2.840.10045.3.1.2' => 'prime192v2',
'1.2.840.10045.3.1.3' => 'prime192v3',
'1.2.840.10045.3.1.4' => 'prime239v1',
'1.2.840.10045.3.1.5' => 'prime239v2',
'1.2.840.10045.3.1.6' => 'prime239v3',
'1.2.840.10045.3.1.7' => 'prime256v1',
'1.2.840.113549.1.1.7' => 'id-RSAES-OAEP',
'1.2.840.113549.1.1.9' => 'id-pSpecified',
'1.2.840.113549.1.1.10' => 'id-RSASSA-PSS',
'1.2.840.113549.1.1.8' => 'id-mgf1',
'1.2.840.113549.1.1.14' => 'sha224WithRSAEncryption',
'1.2.840.113549.1.1.11' => 'sha256WithRSAEncryption',
'1.2.840.113549.1.1.12' => 'sha384WithRSAEncryption',
'1.2.840.113549.1.1.13' => 'sha512WithRSAEncryption',
'2.16.840.1.101.3.4.2.4' => 'id-sha224',
'2.16.840.1.101.3.4.2.1' => 'id-sha256',
'2.16.840.1.101.3.4.2.2' => 'id-sha384',
'2.16.840.1.101.3.4.2.3' => 'id-sha512',
'1.2.643.2.2.4' => 'id-GostR3411-94-with-GostR3410-94',
'1.2.643.2.2.3' => 'id-GostR3411-94-with-GostR3410-2001',
'1.2.643.2.2.20' => 'id-GostR3410-2001',
'1.2.643.2.2.19' => 'id-GostR3410-94',
// Netscape Object Identifiers from "Netscape Certificate Extensions"
'2.16.840.1.113730' => 'netscape',
'2.16.840.1.113730.1' => 'netscape-cert-extension',
'2.16.840.1.113730.1.1' => 'netscape-cert-type',
'2.16.840.1.113730.1.13' => 'netscape-comment',
'2.16.840.1.113730.1.8' => 'netscape-ca-policy-url',
// the following are X.509 extensions not supported by phpseclib
'1.3.6.1.5.5.7.1.12' => 'id-pe-logotype',
'1.2.840.113533.7.65.0' => 'entrustVersInfo',
'2.16.840.1.113733.1.6.9' => 'verisignPrivate',
// for Certificate Signing Requests
// see http://tools.ietf.org/html/rfc2985
'1.2.840.113549.1.9.2' => 'pkcs-9-at-unstructuredName', // PKCS #9 unstructured name
'1.2.840.113549.1.9.7' => 'pkcs-9-at-challengePassword', // Challenge password for certificate revocations
'1.2.840.113549.1.9.14' => 'pkcs-9-at-extensionRequest' // Certificate extension request
);
}
/**
* Load X.509 certificate
*
* Returns an associative array describing the X.509 cert or a false if the cert failed to load
*
* @param string $cert
* @param int $mode
* @access public
* @return mixed
*/
function loadX509($cert, $mode = self::FORMAT_AUTO_DETECT)
{
if (is_array($cert) && isset($cert['tbsCertificate'])) {
unset($this->currentCert);
unset($this->currentKeyIdentifier);
$this->dn = $cert['tbsCertificate']['subject'];
if (!isset($this->dn)) {
return false;
}
$this->currentCert = $cert;
$currentKeyIdentifier = $this->getExtension('id-ce-subjectKeyIdentifier');
$this->currentKeyIdentifier = is_string($currentKeyIdentifier) ? $currentKeyIdentifier : null;
unset($this->signatureSubject);
return $cert;
}
$asn1 = new ASN1();
if ($mode != self::FORMAT_DER) {
$newcert = $this->_extractBER($cert);
if ($mode == self::FORMAT_PEM && $cert == $newcert) {
return false;
}
$cert = $newcert;
}
if ($cert === false) {
$this->currentCert = false;
return false;
}
$asn1->loadOIDs($this->oids);
$decoded = $asn1->decodeBER($cert);
if (!empty($decoded)) {
$x509 = $asn1->asn1map($decoded[0], $this->Certificate);
}
if (!isset($x509) || $x509 === false) {
$this->currentCert = false;
return false;
}
$this->signatureSubject = substr($cert, $decoded[0]['content'][0]['start'], $decoded[0]['content'][0]['length']);
if ($this->_isSubArrayValid($x509, 'tbsCertificate/extensions')) {
$this->_mapInExtensions($x509, 'tbsCertificate/extensions', $asn1);
}
$this->_mapInDNs($x509, 'tbsCertificate/issuer/rdnSequence', $asn1);
$this->_mapInDNs($x509, 'tbsCertificate/subject/rdnSequence', $asn1);
$key = &$x509['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey'];
$key = $this->_reformatKey($x509['tbsCertificate']['subjectPublicKeyInfo']['algorithm']['algorithm'], $key);
$this->currentCert = $x509;
$this->dn = $x509['tbsCertificate']['subject'];
$currentKeyIdentifier = $this->getExtension('id-ce-subjectKeyIdentifier');
$this->currentKeyIdentifier = is_string($currentKeyIdentifier) ? $currentKeyIdentifier : null;
return $x509;
}
/**
* Save X.509 certificate
*
* @param array $cert
* @param int $format optional
* @access public
* @return string
*/
function saveX509($cert, $format = self::FORMAT_PEM)
{
if (!is_array($cert) || !isset($cert['tbsCertificate'])) {
return false;
}
switch (true) {
// "case !$a: case !$b: break; default: whatever();" is the same thing as "if ($a && $b) whatever()"
case !($algorithm = $this->_subArray($cert, 'tbsCertificate/subjectPublicKeyInfo/algorithm/algorithm')):
case is_object($cert['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey']):
break;
default:
switch ($algorithm) {
case 'rsaEncryption':
$cert['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey']
= base64_encode("\0" . base64_decode(preg_replace('#-.+-|[\r\n]#', '', $cert['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey'])));
/* "[For RSA keys] the parameters field MUST have ASN.1 type NULL for this algorithm identifier."
-- https://tools.ietf.org/html/rfc3279#section-2.3.1
given that and the fact that RSA keys appear ot be the only key type for which the parameters field can be blank,
it seems like perhaps the ASN.1 description ought not say the parameters field is OPTIONAL, but whatever.
*/
$cert['tbsCertificate']['subjectPublicKeyInfo']['algorithm']['parameters'] = null;
// https://tools.ietf.org/html/rfc3279#section-2.2.1
$cert['signatureAlgorithm']['parameters'] = null;
$cert['tbsCertificate']['signature']['parameters'] = null;
}
}
$asn1 = new ASN1();
$asn1->loadOIDs($this->oids);
$filters = array();
$type_utf8_string = array('type' => ASN1::TYPE_UTF8_STRING);
$filters['tbsCertificate']['signature']['parameters'] = $type_utf8_string;
$filters['tbsCertificate']['signature']['issuer']['rdnSequence']['value'] = $type_utf8_string;
$filters['tbsCertificate']['issuer']['rdnSequence']['value'] = $type_utf8_string;
$filters['tbsCertificate']['subject']['rdnSequence']['value'] = $type_utf8_string;
$filters['tbsCertificate']['subjectPublicKeyInfo']['algorithm']['parameters'] = $type_utf8_string;
$filters['signatureAlgorithm']['parameters'] = $type_utf8_string;
$filters['authorityCertIssuer']['directoryName']['rdnSequence']['value'] = $type_utf8_string;
//$filters['policyQualifiers']['qualifier'] = $type_utf8_string;
$filters['distributionPoint']['fullName']['directoryName']['rdnSequence']['value'] = $type_utf8_string;
$filters['directoryName']['rdnSequence']['value'] = $type_utf8_string;
/* in the case of policyQualifiers/qualifier, the type has to be \phpseclib\File\ASN1::TYPE_IA5_STRING.
\phpseclib\File\ASN1::TYPE_PRINTABLE_STRING will cause OpenSSL's X.509 parser to spit out random
characters.
*/
$filters['policyQualifiers']['qualifier']
= array('type' => ASN1::TYPE_IA5_STRING);
$asn1->loadFilters($filters);
$this->_mapOutExtensions($cert, 'tbsCertificate/extensions', $asn1);
$this->_mapOutDNs($cert, 'tbsCertificate/issuer/rdnSequence', $asn1);
$this->_mapOutDNs($cert, 'tbsCertificate/subject/rdnSequence', $asn1);
$cert = $asn1->encodeDER($cert, $this->Certificate);
switch ($format) {
case self::FORMAT_DER:
return $cert;
// case self::FORMAT_PEM:
default:
return "-----BEGIN CERTIFICATE-----\r\n" . chunk_split(base64_encode($cert), 64) . '-----END CERTIFICATE-----';
}
}
/**
* Map extension values from octet string to extension-specific internal
* format.
*
* @param array $root (by reference)
* @param string $path
* @param object $asn1
* @access private
*/
function _mapInExtensions(&$root, $path, $asn1)
{
$extensions = &$this->_subArrayUnchecked($root, $path);
if ($extensions) {
for ($i = 0; $i < count($extensions); $i++) {
$id = $extensions[$i]['extnId'];
$value = &$extensions[$i]['extnValue'];
$value = base64_decode($value);
/* [extnValue] contains the DER encoding of an ASN.1 value
corresponding to the extension type identified by extnID */
$map = $this->_getMapping($id);
if (!is_bool($map)) {
$decoder = $id == 'id-ce-nameConstraints' ?
array($this, '_decodeNameConstraintIP') :
array($this, '_decodeIP');
$decoded = $asn1->decodeBER($value);
$mapped = $asn1->asn1map($decoded[0], $map, array('iPAddress' => $decoder));
$value = $mapped === false ? $decoded[0] : $mapped;
if ($id == 'id-ce-certificatePolicies') {
for ($j = 0; $j < count($value); $j++) {
if (!isset($value[$j]['policyQualifiers'])) {
continue;
}
for ($k = 0; $k < count($value[$j]['policyQualifiers']); $k++) {
$subid = $value[$j]['policyQualifiers'][$k]['policyQualifierId'];
$map = $this->_getMapping($subid);
$subvalue = &$value[$j]['policyQualifiers'][$k]['qualifier'];
if ($map !== false) {
$decoded = $asn1->decodeBER($subvalue);
$mapped = $asn1->asn1map($decoded[0], $map);
$subvalue = $mapped === false ? $decoded[0] : $mapped;
}
}
}
}
} else {
$value = base64_encode($value);
}
}
}
}
/**
* Map extension values from extension-specific internal format to
* octet string.
*
* @param array $root (by reference)
* @param string $path
* @param object $asn1
* @access private
*/
function _mapOutExtensions(&$root, $path, $asn1)
{
$extensions = &$this->_subArray($root, $path);
if (is_array($extensions)) {
$size = count($extensions);
for ($i = 0; $i < $size; $i++) {
if ($extensions[$i] instanceof Element) {
continue;
}
$id = $extensions[$i]['extnId'];
$value = &$extensions[$i]['extnValue'];
switch ($id) {
case 'id-ce-certificatePolicies':
for ($j = 0; $j < count($value); $j++) {
if (!isset($value[$j]['policyQualifiers'])) {
continue;
}
for ($k = 0; $k < count($value[$j]['policyQualifiers']); $k++) {
$subid = $value[$j]['policyQualifiers'][$k]['policyQualifierId'];
$map = $this->_getMapping($subid);
$subvalue = &$value[$j]['policyQualifiers'][$k]['qualifier'];
if ($map !== false) {
// by default \phpseclib\File\ASN1 will try to render qualifier as a \phpseclib\File\ASN1::TYPE_IA5_STRING since it's
// actual type is \phpseclib\File\ASN1::TYPE_ANY
$subvalue = new Element($asn1->encodeDER($subvalue, $map));
}
}
}
break;
case 'id-ce-authorityKeyIdentifier': // use 00 as the serial number instead of an empty string
if (isset($value['authorityCertSerialNumber'])) {
if ($value['authorityCertSerialNumber']->toBytes() == '') {
$temp = chr((ASN1::CLASS_CONTEXT_SPECIFIC << 6) | 2) . "\1\0";
$value['authorityCertSerialNumber'] = new Element($temp);
}
}
}
/* [extnValue] contains the DER encoding of an ASN.1 value
corresponding to the extension type identified by extnID */
$map = $this->_getMapping($id);
if (is_bool($map)) {
if (!$map) {
user_error($id . ' is not a currently supported extension');
unset($extensions[$i]);
}
} else {
$temp = $asn1->encodeDER($value, $map, array('iPAddress' => array($this, '_encodeIP')));
$value = base64_encode($temp);
}
}
}
}
/**
* Map attribute values from ANY type to attribute-specific internal
* format.
*
* @param array $root (by reference)
* @param string $path
* @param object $asn1
* @access private
*/
function _mapInAttributes(&$root, $path, $asn1)
{
$attributes = &$this->_subArray($root, $path);
if (is_array($attributes)) {
for ($i = 0; $i < count($attributes); $i++) {
$id = $attributes[$i]['type'];
/* $value contains the DER encoding of an ASN.1 value
corresponding to the attribute type identified by type */
$map = $this->_getMapping($id);
if (is_array($attributes[$i]['value'])) {
$values = &$attributes[$i]['value'];
for ($j = 0; $j < count($values); $j++) {
$value = $asn1->encodeDER($values[$j], $this->AttributeValue);
$decoded = $asn1->decodeBER($value);
if (!is_bool($map)) {
$mapped = $asn1->asn1map($decoded[0], $map);
if ($mapped !== false) {
$values[$j] = $mapped;
}
if ($id == 'pkcs-9-at-extensionRequest' && $this->_isSubArrayValid($values, $j)) {
$this->_mapInExtensions($values, $j, $asn1);
}
} elseif ($map) {
$values[$j] = base64_encode($value);
}
}
}
}
}
}
/**
* Map attribute values from attribute-specific internal format to
* ANY type.
*
* @param array $root (by reference)
* @param string $path
* @param object $asn1
* @access private
*/
function _mapOutAttributes(&$root, $path, $asn1)
{
$attributes = &$this->_subArray($root, $path);
if (is_array($attributes)) {
$size = count($attributes);
for ($i = 0; $i < $size; $i++) {
/* [value] contains the DER encoding of an ASN.1 value
corresponding to the attribute type identified by type */
$id = $attributes[$i]['type'];
$map = $this->_getMapping($id);
if ($map === false) {
user_error($id . ' is not a currently supported attribute', E_USER_NOTICE);
unset($attributes[$i]);
} elseif (is_array($attributes[$i]['value'])) {
$values = &$attributes[$i]['value'];
for ($j = 0; $j < count($values); $j++) {
switch ($id) {
case 'pkcs-9-at-extensionRequest':
$this->_mapOutExtensions($values, $j, $asn1);
break;
}
if (!is_bool($map)) {
$temp = $asn1->encodeDER($values[$j], $map);
$decoded = $asn1->decodeBER($temp);
$values[$j] = $asn1->asn1map($decoded[0], $this->AttributeValue);
}
}
}
}
}
}
/**
* Map DN values from ANY type to DN-specific internal
* format.
*
* @param array $root (by reference)
* @param string $path
* @param object $asn1
* @access private
*/
function _mapInDNs(&$root, $path, $asn1)
{
$dns = &$this->_subArray($root, $path);
if (is_array($dns)) {
for ($i = 0; $i < count($dns); $i++) {
for ($j = 0; $j < count($dns[$i]); $j++) {
$type = $dns[$i][$j]['type'];
$value = &$dns[$i][$j]['value'];
if (is_object($value) && $value instanceof Element) {
$map = $this->_getMapping($type);
if (!is_bool($map)) {
$decoded = $asn1->decodeBER($value);
$value = $asn1->asn1map($decoded[0], $map);
}
}
}
}
}
}
/**
* Map DN values from DN-specific internal format to
* ANY type.
*
* @param array $root (by reference)
* @param string $path
* @param object $asn1
* @access private
*/
function _mapOutDNs(&$root, $path, $asn1)
{
$dns = &$this->_subArray($root, $path);
if (is_array($dns)) {
$size = count($dns);
for ($i = 0; $i < $size; $i++) {
for ($j = 0; $j < count($dns[$i]); $j++) {
$type = $dns[$i][$j]['type'];
$value = &$dns[$i][$j]['value'];
if (is_object($value) && $value instanceof Element) {
continue;
}
$map = $this->_getMapping($type);
if (!is_bool($map)) {
$value = new Element($asn1->encodeDER($value, $map));
}
}
}
}
}
/**
* Associate an extension ID to an extension mapping
*
* @param string $extnId
* @access private
* @return mixed
*/
function _getMapping($extnId)
{
if (!is_string($extnId)) { // eg. if it's a \phpseclib\File\ASN1\Element object
return true;
}
switch ($extnId) {
case 'id-ce-keyUsage':
return $this->KeyUsage;
case 'id-ce-basicConstraints':
return $this->BasicConstraints;
case 'id-ce-subjectKeyIdentifier':
return $this->KeyIdentifier;
case 'id-ce-cRLDistributionPoints':
return $this->CRLDistributionPoints;
case 'id-ce-authorityKeyIdentifier':
return $this->AuthorityKeyIdentifier;
case 'id-ce-certificatePolicies':
return $this->CertificatePolicies;
case 'id-ce-extKeyUsage':
return $this->ExtKeyUsageSyntax;
case 'id-pe-authorityInfoAccess':
return $this->AuthorityInfoAccessSyntax;
case 'id-pe-subjectInfoAccess':
return $this->SubjectInfoAccessSyntax;
case 'id-ce-subjectAltName':
return $this->SubjectAltName;
case 'id-ce-subjectDirectoryAttributes':
return $this->SubjectDirectoryAttributes;
case 'id-ce-privateKeyUsagePeriod':
return $this->PrivateKeyUsagePeriod;
case 'id-ce-issuerAltName':
return $this->IssuerAltName;
case 'id-ce-policyMappings':
return $this->PolicyMappings;
case 'id-ce-nameConstraints':
return $this->NameConstraints;
case 'netscape-cert-type':
return $this->netscape_cert_type;
case 'netscape-comment':
return $this->netscape_comment;
case 'netscape-ca-policy-url':
return $this->netscape_ca_policy_url;
// since id-qt-cps isn't a constructed type it will have already been decoded as a string by the time it gets
// back around to asn1map() and we don't want it decoded again.
//case 'id-qt-cps':
// return $this->CPSuri;
case 'id-qt-unotice':
return $this->UserNotice;
// the following OIDs are unsupported but we don't want them to give notices when calling saveX509().
case 'id-pe-logotype': // http://www.ietf.org/rfc/rfc3709.txt
case 'entrustVersInfo':
// http://support.microsoft.com/kb/287547
case '1.3.6.1.4.1.311.20.2': // szOID_ENROLL_CERTTYPE_EXTENSION
case '1.3.6.1.4.1.311.21.1': // szOID_CERTSRV_CA_VERSION
// "SET Secure Electronic Transaction Specification"
// http://www.maithean.com/docs/set_bk3.pdf
case '2.23.42.7.0': // id-set-hashedRootKey
// "Certificate Transparency"
// https://tools.ietf.org/html/rfc6962
case '1.3.6.1.4.1.11129.2.4.2':
// "Qualified Certificate statements"
// https://tools.ietf.org/html/rfc3739#section-3.2.6
case '1.3.6.1.5.5.7.1.3':
return true;
// CSR attributes
case 'pkcs-9-at-unstructuredName':
return $this->PKCS9String;
case 'pkcs-9-at-challengePassword':
return $this->DirectoryString;
case 'pkcs-9-at-extensionRequest':
return $this->Extensions;
// CRL extensions.
case 'id-ce-cRLNumber':
return $this->CRLNumber;
case 'id-ce-deltaCRLIndicator':
return $this->CRLNumber;
case 'id-ce-issuingDistributionPoint':
return $this->IssuingDistributionPoint;
case 'id-ce-freshestCRL':
return $this->CRLDistributionPoints;
case 'id-ce-cRLReasons':
return $this->CRLReason;
case 'id-ce-invalidityDate':
return $this->InvalidityDate;
case 'id-ce-certificateIssuer':
return $this->CertificateIssuer;
case 'id-ce-holdInstructionCode':
return $this->HoldInstructionCode;
case 'id-at-postalAddress':
return $this->PostalAddress;
}
return false;
}
/**
* Load an X.509 certificate as a certificate authority
*
* @param string $cert
* @access public
* @return bool
*/
function loadCA($cert)
{
$olddn = $this->dn;
$oldcert = $this->currentCert;
$oldsigsubj = $this->signatureSubject;
$oldkeyid = $this->currentKeyIdentifier;
$cert = $this->loadX509($cert);
if (!$cert) {
$this->dn = $olddn;
$this->currentCert = $oldcert;
$this->signatureSubject = $oldsigsubj;
$this->currentKeyIdentifier = $oldkeyid;
return false;
}
/* From RFC5280 "PKIX Certificate and CRL Profile":
If the keyUsage extension is present, then the subject public key
MUST NOT be used to verify signatures on certificates or CRLs unless
the corresponding keyCertSign or cRLSign bit is set. */
//$keyUsage = $this->getExtension('id-ce-keyUsage');
//if ($keyUsage && !in_array('keyCertSign', $keyUsage)) {
// return false;
//}
/* From RFC5280 "PKIX Certificate and CRL Profile":
The cA boolean indicates whether the certified public key may be used
to verify certificate signatures. If the cA boolean is not asserted,
then the keyCertSign bit in the key usage extension MUST NOT be
asserted. If the basic constraints extension is not present in a
version 3 certificate, or the extension is present but the cA boolean
is not asserted, then the certified public key MUST NOT be used to
verify certificate signatures. */
//$basicConstraints = $this->getExtension('id-ce-basicConstraints');
//if (!$basicConstraints || !$basicConstraints['cA']) {
// return false;
//}
$this->CAs[] = $cert;
$this->dn = $olddn;
$this->currentCert = $oldcert;
$this->signatureSubject = $oldsigsubj;
return true;
}
/**
* Validate an X.509 certificate against a URL
*
* From RFC2818 "HTTP over TLS":
*
* Matching is performed using the matching rules specified by
* [RFC2459]. If more than one identity of a given type is present in
* the certificate (e.g., more than one dNSName name, a match in any one
* of the set is considered acceptable.) Names may contain the wildcard
* character * which is considered to match any single domain name
* component or component fragment. E.g., *.a.com matches foo.a.com but
* not bar.foo.a.com. f*.com matches foo.com but not bar.com.
*
* @param string $url
* @access public
* @return bool
*/
function validateURL($url)
{
if (!is_array($this->currentCert) || !isset($this->currentCert['tbsCertificate'])) {
return false;
}
$components = parse_url($url);
if (!isset($components['host'])) {
return false;
}
if ($names = $this->getExtension('id-ce-subjectAltName')) {
foreach ($names as $name) {
foreach ($name as $key => $value) {
$value = str_replace(array('.', '*'), array('\.', '[^.]*'), $value);
switch ($key) {
case 'dNSName':
/* From RFC2818 "HTTP over TLS":
If a subjectAltName extension of type dNSName is present, that MUST
be used as the identity. Otherwise, the (most specific) Common Name
field in the Subject field of the certificate MUST be used. Although
the use of the Common Name is existing practice, it is deprecated and
Certification Authorities are encouraged to use the dNSName instead. */
if (preg_match('#^' . $value . '$#', $components['host'])) {
return true;
}
break;
case 'iPAddress':
/* From RFC2818 "HTTP over TLS":
In some cases, the URI is specified as an IP address rather than a
hostname. In this case, the iPAddress subjectAltName must be present
in the certificate and must exactly match the IP in the URI. */
if (preg_match('#(?:\d{1-3}\.){4}#', $components['host'] . '.') && preg_match('#^' . $value . '$#', $components['host'])) {
return true;
}
}
}
}
return false;
}
if ($value = $this->getDNProp('id-at-commonName')) {
$value = str_replace(array('.', '*'), array('\.', '[^.]*'), $value[0]);
return preg_match('#^' . $value . '$#', $components['host']);
}
return false;
}
/**
* Validate a date
*
* If $date isn't defined it is assumed to be the current date.
*
* @param \DateTime|string $date optional
* @access public
*/
function validateDate($date = null)
{
if (!is_array($this->currentCert) || !isset($this->currentCert['tbsCertificate'])) {
return false;
}
if (!isset($date)) {
$date = new DateTime(null, new DateTimeZone(@date_default_timezone_get()));
}
$notBefore = $this->currentCert['tbsCertificate']['validity']['notBefore'];
$notBefore = isset($notBefore['generalTime']) ? $notBefore['generalTime'] : $notBefore['utcTime'];
$notAfter = $this->currentCert['tbsCertificate']['validity']['notAfter'];
$notAfter = isset($notAfter['generalTime']) ? $notAfter['generalTime'] : $notAfter['utcTime'];
if (is_string($date)) {
$date = new DateTime($date, new DateTimeZone(@date_default_timezone_get()));
}
$notBefore = new DateTime($notBefore, new DateTimeZone(@date_default_timezone_get()));
$notAfter = new DateTime($notAfter, new DateTimeZone(@date_default_timezone_get()));
switch (true) {
case $date < $notBefore:
case $date > $notAfter:
return false;
}
return true;
}
/**
* Fetches a URL
*
* @param string $url
* @access private
* @return bool|string
*/
static function _fetchURL($url)
{
if (self::$disable_url_fetch) {
return false;
}
$parts = parse_url($url);
$data = '';
switch ($parts['scheme']) {
case 'http':
$fsock = @fsockopen($parts['host'], isset($parts['port']) ? $parts['port'] : 80);
if (!$fsock) {
return false;
}
$path = $parts['path'];
if (isset($parts['query'])) {
$path.= '?' . $parts['query'];
}
fputs($fsock, "GET $path HTTP/1.0\r\n");
fputs($fsock, "Host: $parts[host]\r\n\r\n");
$line = fgets($fsock, 1024);
if (strlen($line) < 3) {
return false;
}
preg_match('#HTTP/1.\d (\d{3})#', $line, $temp);
if ($temp[1] != '200') {
return false;
}
// skip the rest of the headers in the http response
while (!feof($fsock) && fgets($fsock, 1024) != "\r\n") {
}
while (!feof($fsock)) {
$temp = fread($fsock, 1024);
if ($temp === false) {
return false;
}
$data.= $temp;
}
break;
//case 'ftp':
//case 'ldap':
//default:
}
return $data;
}
/**
* Validates an intermediate cert as identified via authority info access extension
*
* See https://tools.ietf.org/html/rfc4325 for more info
*
* @param bool $caonly
* @param int $count
* @access private
* @return bool
*/
function _testForIntermediate($caonly, $count)
{
$opts = $this->getExtension('id-pe-authorityInfoAccess');
if (!is_array($opts)) {
return false;
}
foreach ($opts as $opt) {
if ($opt['accessMethod'] == 'id-ad-caIssuers') {
// accessLocation is a GeneralName. GeneralName fields support stuff like email addresses, IP addresses, LDAP,
// etc, but we're only supporting URI's. URI's and LDAP are the only thing https://tools.ietf.org/html/rfc4325
// discusses
if (isset($opt['accessLocation']['uniformResourceIdentifier'])) {
$url = $opt['accessLocation']['uniformResourceIdentifier'];
break;
}
}
}
if (!isset($url)) {
return false;
}
$cert = static::_fetchURL($url);
if (!is_string($cert)) {
return false;
}
$parent = new static();
$parent->CAs = $this->CAs;
/*
"Conforming applications that support HTTP or FTP for accessing
certificates MUST be able to accept .cer files and SHOULD be able
to accept .p7c files." -- https://tools.ietf.org/html/rfc4325
A .p7c file is 'a "certs-only" CMS message as specified in RFC 2797"
These are currently unsupported
*/
if (!is_array($parent->loadX509($cert))) {
return false;
}
if (!$parent->_validateSignatureCountable($caonly, ++$count)) {
return false;
}
$this->CAs[] = $parent->currentCert;
//$this->loadCA($cert);
return true;
}
/**
* Validate a signature
*
* Works on X.509 certs, CSR's and CRL's.
* Returns true if the signature is verified, false if it is not correct or null on error
*
* By default returns false for self-signed certs. Call validateSignature(false) to make this support
* self-signed.
*
* The behavior of this function is inspired by {@link http://php.net/openssl-verify openssl_verify}.
*
* @param bool $caonly optional
* @access public
* @return mixed
*/
function validateSignature($caonly = true)
{
return $this->_validateSignatureCountable($caonly, 0);
}
/**
* Validate a signature
*
* Performs said validation whilst keeping track of how many times validation method is called
*
* @param bool $caonly
* @param int $count
* @access private
* @return mixed
*/
function _validateSignatureCountable($caonly, $count)
{
if (!is_array($this->currentCert) || !isset($this->signatureSubject)) {
return null;
}
if ($count == self::$recur_limit) {
return false;
}
/* TODO:
"emailAddress attribute values are not case-sensitive (e.g., "subscriber@example.com" is the same as "SUBSCRIBER@EXAMPLE.COM")."
-- http://tools.ietf.org/html/rfc5280#section-4.1.2.6
implement pathLenConstraint in the id-ce-basicConstraints extension */
switch (true) {
case isset($this->currentCert['tbsCertificate']):
// self-signed cert
switch (true) {
case !defined('FILE_X509_IGNORE_TYPE') && $this->currentCert['tbsCertificate']['issuer'] === $this->currentCert['tbsCertificate']['subject']:
case defined('FILE_X509_IGNORE_TYPE') && $this->getIssuerDN(self::DN_STRING) === $this->getDN(self::DN_STRING):
$authorityKey = $this->getExtension('id-ce-authorityKeyIdentifier');
$subjectKeyID = $this->getExtension('id-ce-subjectKeyIdentifier');
switch (true) {
case !is_array($authorityKey):
case !$subjectKeyID:
case isset($authorityKey['keyIdentifier']) && $authorityKey['keyIdentifier'] === $subjectKeyID:
$signingCert = $this->currentCert; // working cert
}
}
if (!empty($this->CAs)) {
for ($i = 0; $i < count($this->CAs); $i++) {
// even if the cert is a self-signed one we still want to see if it's a CA;
// if not, we'll conditionally return an error
$ca = $this->CAs[$i];
switch (true) {
case !defined('FILE_X509_IGNORE_TYPE') && $this->currentCert['tbsCertificate']['issuer'] === $ca['tbsCertificate']['subject']:
case defined('FILE_X509_IGNORE_TYPE') && $this->getDN(self::DN_STRING, $this->currentCert['tbsCertificate']['issuer']) === $this->getDN(self::DN_STRING, $ca['tbsCertificate']['subject']):
$authorityKey = $this->getExtension('id-ce-authorityKeyIdentifier');
$subjectKeyID = $this->getExtension('id-ce-subjectKeyIdentifier', $ca);
switch (true) {
case !is_array($authorityKey):
case !$subjectKeyID:
case isset($authorityKey['keyIdentifier']) && $authorityKey['keyIdentifier'] === $subjectKeyID:
if (is_array($authorityKey) && isset($authorityKey['authorityCertSerialNumber']) && !$authorityKey['authorityCertSerialNumber']->equals($ca['tbsCertificate']['serialNumber'])) {
break 2; // serial mismatch - check other ca
}
$signingCert = $ca; // working cert
break 3;
}
}
}
if (count($this->CAs) == $i && $caonly) {
return $this->_testForIntermediate($caonly, $count) && $this->validateSignature($caonly);
}
} elseif (!isset($signingCert) || $caonly) {
return $this->_testForIntermediate($caonly, $count) && $this->validateSignature($caonly);
}
return $this->_validateSignature(
$signingCert['tbsCertificate']['subjectPublicKeyInfo']['algorithm']['algorithm'],
$signingCert['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey'],
$this->currentCert['signatureAlgorithm']['algorithm'],
substr(base64_decode($this->currentCert['signature']), 1),
$this->signatureSubject
);
case isset($this->currentCert['certificationRequestInfo']):
return $this->_validateSignature(
$this->currentCert['certificationRequestInfo']['subjectPKInfo']['algorithm']['algorithm'],
$this->currentCert['certificationRequestInfo']['subjectPKInfo']['subjectPublicKey'],
$this->currentCert['signatureAlgorithm']['algorithm'],
substr(base64_decode($this->currentCert['signature']), 1),
$this->signatureSubject
);
case isset($this->currentCert['publicKeyAndChallenge']):
return $this->_validateSignature(
$this->currentCert['publicKeyAndChallenge']['spki']['algorithm']['algorithm'],
$this->currentCert['publicKeyAndChallenge']['spki']['subjectPublicKey'],
$this->currentCert['signatureAlgorithm']['algorithm'],
substr(base64_decode($this->currentCert['signature']), 1),
$this->signatureSubject
);
case isset($this->currentCert['tbsCertList']):
if (!empty($this->CAs)) {
for ($i = 0; $i < count($this->CAs); $i++) {
$ca = $this->CAs[$i];
switch (true) {
case !defined('FILE_X509_IGNORE_TYPE') && $this->currentCert['tbsCertList']['issuer'] === $ca['tbsCertificate']['subject']:
case defined('FILE_X509_IGNORE_TYPE') && $this->getDN(self::DN_STRING, $this->currentCert['tbsCertList']['issuer']) === $this->getDN(self::DN_STRING, $ca['tbsCertificate']['subject']):
$authorityKey = $this->getExtension('id-ce-authorityKeyIdentifier');
$subjectKeyID = $this->getExtension('id-ce-subjectKeyIdentifier', $ca);
switch (true) {
case !is_array($authorityKey):
case !$subjectKeyID:
case isset($authorityKey['keyIdentifier']) && $authorityKey['keyIdentifier'] === $subjectKeyID:
if (is_array($authorityKey) && isset($authorityKey['authorityCertSerialNumber']) && !$authorityKey['authorityCertSerialNumber']->equals($ca['tbsCertificate']['serialNumber'])) {
break 2; // serial mismatch - check other ca
}
$signingCert = $ca; // working cert
break 3;
}
}
}
}
if (!isset($signingCert)) {
return false;
}
return $this->_validateSignature(
$signingCert['tbsCertificate']['subjectPublicKeyInfo']['algorithm']['algorithm'],
$signingCert['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey'],
$this->currentCert['signatureAlgorithm']['algorithm'],
substr(base64_decode($this->currentCert['signature']), 1),
$this->signatureSubject
);
default:
return false;
}
}
/**
* Validates a signature
*
* Returns true if the signature is verified, false if it is not correct or null on error
*
* @param string $publicKeyAlgorithm
* @param string $publicKey
* @param string $signatureAlgorithm
* @param string $signature
* @param string $signatureSubject
* @access private
* @return int
*/
function _validateSignature($publicKeyAlgorithm, $publicKey, $signatureAlgorithm, $signature, $signatureSubject)
{
switch ($publicKeyAlgorithm) {
case 'rsaEncryption':
$rsa = new RSA();
$rsa->loadKey($publicKey);
switch ($signatureAlgorithm) {
case 'md2WithRSAEncryption':
case 'md5WithRSAEncryption':
case 'sha1WithRSAEncryption':
case 'sha224WithRSAEncryption':
case 'sha256WithRSAEncryption':
case 'sha384WithRSAEncryption':
case 'sha512WithRSAEncryption':
$rsa->setHash(preg_replace('#WithRSAEncryption$#', '', $signatureAlgorithm));
$rsa->setSignatureMode(RSA::SIGNATURE_PKCS1);
if (!@$rsa->verify($signatureSubject, $signature)) {
return false;
}
break;
default:
return null;
}
break;
default:
return null;
}
return true;
}
/**
* Sets the recursion limit
*
* When validating a signature it may be necessary to download intermediate certs from URI's.
* An intermediate cert that linked to itself would result in an infinite loop so to prevent
* that we set a recursion limit. A negative number means that there is no recursion limit.
*
* @param int $count
* @access public
*/
static function setRecurLimit($count)
{
self::$recur_limit = $count;
}
/**
* Prevents URIs from being automatically retrieved
*
* @access public
*/
static function disableURLFetch()
{
self::$disable_url_fetch = true;
}
/**
* Allows URIs to be automatically retrieved
*
* @access public
*/
static function enableURLFetch()
{
self::$disable_url_fetch = false;
}
/**
* Reformat public keys
*
* Reformats a public key to a format supported by phpseclib (if applicable)
*
* @param string $algorithm
* @param string $key
* @access private
* @return string
*/
function _reformatKey($algorithm, $key)
{
switch ($algorithm) {
case 'rsaEncryption':
return
"-----BEGIN RSA PUBLIC KEY-----\r\n" .
// subjectPublicKey is stored as a bit string in X.509 certs. the first byte of a bit string represents how many bits
// in the last byte should be ignored. the following only supports non-zero stuff but as none of the X.509 certs Firefox
// uses as a cert authority actually use a non-zero bit I think it's safe to assume that none do.
chunk_split(base64_encode(substr(base64_decode($key), 1)), 64) .
'-----END RSA PUBLIC KEY-----';
default:
return $key;
}
}
/**
* Decodes an IP address
*
* Takes in a base64 encoded "blob" and returns a human readable IP address
*
* @param string $ip
* @access private
* @return string
*/
function _decodeIP($ip)
{
return inet_ntop(base64_decode($ip));
}
/**
* Decodes an IP address in a name constraints extension
*
* Takes in a base64 encoded "blob" and returns a human readable IP address / mask
*
* @param string $ip
* @access private
* @return array
*/
function _decodeNameConstraintIP($ip)
{
$ip = base64_decode($ip);
$size = strlen($ip) >> 1;
$mask = substr($ip, $size);
$ip = substr($ip, 0, $size);
return array(inet_ntop($ip), inet_ntop($mask));
}
/**
* Encodes an IP address
*
* Takes a human readable IP address into a base64-encoded "blob"
*
* @param string|array $ip
* @access private
* @return string
*/
function _encodeIP($ip)
{
return is_string($ip) ?
base64_encode(inet_pton($ip)) :
base64_encode(inet_pton($ip[0]) . inet_pton($ip[1]));
}
/**
* "Normalizes" a Distinguished Name property
*
* @param string $propName
* @access private
* @return mixed
*/
function _translateDNProp($propName)
{
switch (strtolower($propName)) {
case 'id-at-countryname':
case 'countryname':
case 'c':
return 'id-at-countryName';
case 'id-at-organizationname':
case 'organizationname':
case 'o':
return 'id-at-organizationName';
case 'id-at-dnqualifier':
case 'dnqualifier':
return 'id-at-dnQualifier';
case 'id-at-commonname':
case 'commonname':
case 'cn':
return 'id-at-commonName';
case 'id-at-stateorprovincename':
case 'stateorprovincename':
case 'state':
case 'province':
case 'provincename':
case 'st':
return 'id-at-stateOrProvinceName';
case 'id-at-localityname':
case 'localityname':
case 'l':
return 'id-at-localityName';
case 'id-emailaddress':
case 'emailaddress':
return 'pkcs-9-at-emailAddress';
case 'id-at-serialnumber':
case 'serialnumber':
return 'id-at-serialNumber';
case 'id-at-postalcode':
case 'postalcode':
return 'id-at-postalCode';
case 'id-at-streetaddress':
case 'streetaddress':
return 'id-at-streetAddress';
case 'id-at-name':
case 'name':
return 'id-at-name';
case 'id-at-givenname':
case 'givenname':
return 'id-at-givenName';
case 'id-at-surname':
case 'surname':
case 'sn':
return 'id-at-surname';
case 'id-at-initials':
case 'initials':
return 'id-at-initials';
case 'id-at-generationqualifier':
case 'generationqualifier':
return 'id-at-generationQualifier';
case 'id-at-organizationalunitname':
case 'organizationalunitname':
case 'ou':
return 'id-at-organizationalUnitName';
case 'id-at-pseudonym':
case 'pseudonym':
return 'id-at-pseudonym';
case 'id-at-title':
case 'title':
return 'id-at-title';
case 'id-at-description':
case 'description':
return 'id-at-description';
case 'id-at-role':
case 'role':
return 'id-at-role';
case 'id-at-uniqueidentifier':
case 'uniqueidentifier':
case 'x500uniqueidentifier':
return 'id-at-uniqueIdentifier';
case 'postaladdress':
case 'id-at-postaladdress':
return 'id-at-postalAddress';
default:
return false;
}
}
/**
* Set a Distinguished Name property
*
* @param string $propName
* @param mixed $propValue
* @param string $type optional
* @access public
* @return bool
*/
function setDNProp($propName, $propValue, $type = 'utf8String')
{
if (empty($this->dn)) {
$this->dn = array('rdnSequence' => array());
}
if (($propName = $this->_translateDNProp($propName)) === false) {
return false;
}
foreach ((array) $propValue as $v) {
if (!is_array($v) && isset($type)) {
$v = array($type => $v);
}
$this->dn['rdnSequence'][] = array(
array(
'type' => $propName,
'value'=> $v
)
);
}
return true;
}
/**
* Remove Distinguished Name properties
*
* @param string $propName
* @access public
*/
function removeDNProp($propName)
{
if (empty($this->dn)) {
return;
}
if (($propName = $this->_translateDNProp($propName)) === false) {
return;
}
$dn = &$this->dn['rdnSequence'];
$size = count($dn);
for ($i = 0; $i < $size; $i++) {
if ($dn[$i][0]['type'] == $propName) {
unset($dn[$i]);
}
}
$dn = array_values($dn);
// fix for https://bugs.php.net/75433 affecting PHP 7.2
if (!isset($dn[0])) {
$dn = array_splice($dn, 0, 0);
}
}
/**
* Get Distinguished Name properties
*
* @param string $propName
* @param array $dn optional
* @param bool $withType optional
* @return mixed
* @access public
*/
function getDNProp($propName, $dn = null, $withType = false)
{
if (!isset($dn)) {
$dn = $this->dn;
}
if (empty($dn)) {
return false;
}
if (($propName = $this->_translateDNProp($propName)) === false) {
return false;
}
$asn1 = new ASN1();
$asn1->loadOIDs($this->oids);
$filters = array();
$filters['value'] = array('type' => ASN1::TYPE_UTF8_STRING);
$asn1->loadFilters($filters);
$this->_mapOutDNs($dn, 'rdnSequence', $asn1);
$dn = $dn['rdnSequence'];
$result = array();
for ($i = 0; $i < count($dn); $i++) {
if ($dn[$i][0]['type'] == $propName) {
$v = $dn[$i][0]['value'];
if (!$withType) {
if (is_array($v)) {
foreach ($v as $type => $s) {
$type = array_search($type, $asn1->ANYmap, true);
if ($type !== false && isset($asn1->stringTypeSize[$type])) {
$s = $asn1->convert($s, $type);
if ($s !== false) {
$v = $s;
break;
}
}
}
if (is_array($v)) {
$v = array_pop($v); // Always strip data type.
}
} elseif (is_object($v) && $v instanceof Element) {
$map = $this->_getMapping($propName);
if (!is_bool($map)) {
$decoded = $asn1->decodeBER($v);
$v = $asn1->asn1map($decoded[0], $map);
}
}
}
$result[] = $v;
}
}
return $result;
}
/**
* Set a Distinguished Name
*
* @param mixed $dn
* @param bool $merge optional
* @param string $type optional
* @access public
* @return bool
*/
function setDN($dn, $merge = false, $type = 'utf8String')
{
if (!$merge) {
$this->dn = null;
}
if (is_array($dn)) {
if (isset($dn['rdnSequence'])) {
$this->dn = $dn; // No merge here.
return true;
}
// handles stuff generated by openssl_x509_parse()
foreach ($dn as $prop => $value) {
if (!$this->setDNProp($prop, $value, $type)) {
return false;
}
}
return true;
}
// handles everything else
$results = preg_split('#((?:^|, *|/)(?:C=|O=|OU=|CN=|L=|ST=|SN=|postalCode=|streetAddress=|emailAddress=|serialNumber=|organizationalUnitName=|title=|description=|role=|x500UniqueIdentifier=|postalAddress=))#', $dn, -1, PREG_SPLIT_DELIM_CAPTURE);
for ($i = 1; $i < count($results); $i+=2) {
$prop = trim($results[$i], ', =/');
$value = $results[$i + 1];
if (!$this->setDNProp($prop, $value, $type)) {
return false;
}
}
return true;
}
/**
* Get the Distinguished Name for a certificates subject
*
* @param mixed $format optional
* @param array $dn optional
* @access public
* @return bool
*/
function getDN($format = self::DN_ARRAY, $dn = null)
{
if (!isset($dn)) {
$dn = isset($this->currentCert['tbsCertList']) ? $this->currentCert['tbsCertList']['issuer'] : $this->dn;
}
switch ((int) $format) {
case self::DN_ARRAY:
return $dn;
case self::DN_ASN1:
$asn1 = new ASN1();
$asn1->loadOIDs($this->oids);
$filters = array();
$filters['rdnSequence']['value'] = array('type' => ASN1::TYPE_UTF8_STRING);
$asn1->loadFilters($filters);
$this->_mapOutDNs($dn, 'rdnSequence', $asn1);
return $asn1->encodeDER($dn, $this->Name);
case self::DN_CANON:
// No SEQUENCE around RDNs and all string values normalized as
// trimmed lowercase UTF-8 with all spacing as one blank.
// constructed RDNs will not be canonicalized
$asn1 = new ASN1();
$asn1->loadOIDs($this->oids);
$filters = array();
$filters['value'] = array('type' => ASN1::TYPE_UTF8_STRING);
$asn1->loadFilters($filters);
$result = '';
$this->_mapOutDNs($dn, 'rdnSequence', $asn1);
foreach ($dn['rdnSequence'] as $rdn) {
foreach ($rdn as $i => $attr) {
$attr = &$rdn[$i];
if (is_array($attr['value'])) {
foreach ($attr['value'] as $type => $v) {
$type = array_search($type, $asn1->ANYmap, true);
if ($type !== false && isset($asn1->stringTypeSize[$type])) {
$v = $asn1->convert($v, $type);
if ($v !== false) {
$v = preg_replace('/\s+/', ' ', $v);
$attr['value'] = strtolower(trim($v));
break;
}
}
}
}
}
$result .= $asn1->encodeDER($rdn, $this->RelativeDistinguishedName);
}
return $result;
case self::DN_HASH:
$dn = $this->getDN(self::DN_CANON, $dn);
$hash = new Hash('sha1');
$hash = $hash->hash($dn);
extract(unpack('Vhash', $hash));
return strtolower(bin2hex(pack('N', $hash)));
}
// Default is to return a string.
$start = true;
$output = '';
$result = array();
$asn1 = new ASN1();
$asn1->loadOIDs($this->oids);
$filters = array();
$filters['rdnSequence']['value'] = array('type' => ASN1::TYPE_UTF8_STRING);
$asn1->loadFilters($filters);
$this->_mapOutDNs($dn, 'rdnSequence', $asn1);
foreach ($dn['rdnSequence'] as $field) {
$prop = $field[0]['type'];
$value = $field[0]['value'];
$delim = ', ';
switch ($prop) {
case 'id-at-countryName':
$desc = 'C';
break;
case 'id-at-stateOrProvinceName':
$desc = 'ST';
break;
case 'id-at-organizationName':
$desc = 'O';
break;
case 'id-at-organizationalUnitName':
$desc = 'OU';
break;
case 'id-at-commonName':
$desc = 'CN';
break;
case 'id-at-localityName':
$desc = 'L';
break;
case 'id-at-surname':
$desc = 'SN';
break;
case 'id-at-uniqueIdentifier':
$delim = '/';
$desc = 'x500UniqueIdentifier';
break;
case 'id-at-postalAddress':
$delim = '/';
$desc = 'postalAddress';
break;
default:
$delim = '/';
$desc = preg_replace('#.+-([^-]+)$#', '$1', $prop);
}
if (!$start) {
$output.= $delim;
}
if (is_array($value)) {
foreach ($value as $type => $v) {
$type = array_search($type, $asn1->ANYmap, true);
if ($type !== false && isset($asn1->stringTypeSize[$type])) {
$v = $asn1->convert($v, $type);
if ($v !== false) {
$value = $v;
break;
}
}
}
if (is_array($value)) {
$value = array_pop($value); // Always strip data type.
}
} elseif (is_object($value) && $value instanceof Element) {
$callback = function ($x) {
return "\x" . bin2hex($x[0]);
};
$value = strtoupper(preg_replace_callback('#[^\x20-\x7E]#', $callback, $value->element));
}
$output.= $desc . '=' . $value;
$result[$desc] = isset($result[$desc]) ?
array_merge((array) $result[$desc], array($value)) :
$value;
$start = false;
}
return $format == self::DN_OPENSSL ? $result : $output;
}
/**
* Get the Distinguished Name for a certificate/crl issuer
*
* @param int $format optional
* @access public
* @return mixed
*/
function getIssuerDN($format = self::DN_ARRAY)
{
switch (true) {
case !isset($this->currentCert) || !is_array($this->currentCert):
break;
case isset($this->currentCert['tbsCertificate']):
return $this->getDN($format, $this->currentCert['tbsCertificate']['issuer']);
case isset($this->currentCert['tbsCertList']):
return $this->getDN($format, $this->currentCert['tbsCertList']['issuer']);
}
return false;
}
/**
* Get the Distinguished Name for a certificate/csr subject
* Alias of getDN()
*
* @param int $format optional
* @access public
* @return mixed
*/
function getSubjectDN($format = self::DN_ARRAY)
{
switch (true) {
case !empty($this->dn):
return $this->getDN($format);
case !isset($this->currentCert) || !is_array($this->currentCert):
break;
case isset($this->currentCert['tbsCertificate']):
return $this->getDN($format, $this->currentCert['tbsCertificate']['subject']);
case isset($this->currentCert['certificationRequestInfo']):
return $this->getDN($format, $this->currentCert['certificationRequestInfo']['subject']);
}
return false;
}
/**
* Get an individual Distinguished Name property for a certificate/crl issuer
*
* @param string $propName
* @param bool $withType optional
* @access public
* @return mixed
*/
function getIssuerDNProp($propName, $withType = false)
{
switch (true) {
case !isset($this->currentCert) || !is_array($this->currentCert):
break;
case isset($this->currentCert['tbsCertificate']):
return $this->getDNProp($propName, $this->currentCert['tbsCertificate']['issuer'], $withType);
case isset($this->currentCert['tbsCertList']):
return $this->getDNProp($propName, $this->currentCert['tbsCertList']['issuer'], $withType);
}
return false;
}
/**
* Get an individual Distinguished Name property for a certificate/csr subject
*
* @param string $propName
* @param bool $withType optional
* @access public
* @return mixed
*/
function getSubjectDNProp($propName, $withType = false)
{
switch (true) {
case !empty($this->dn):
return $this->getDNProp($propName, null, $withType);
case !isset($this->currentCert) || !is_array($this->currentCert):
break;
case isset($this->currentCert['tbsCertificate']):
return $this->getDNProp($propName, $this->currentCert['tbsCertificate']['subject'], $withType);
case isset($this->currentCert['certificationRequestInfo']):
return $this->getDNProp($propName, $this->currentCert['certificationRequestInfo']['subject'], $withType);
}
return false;
}
/**
* Get the certificate chain for the current cert
*
* @access public
* @return mixed
*/
function getChain()
{
$chain = array($this->currentCert);
if (!is_array($this->currentCert) || !isset($this->currentCert['tbsCertificate'])) {
return false;
}
if (empty($this->CAs)) {
return $chain;
}
while (true) {
$currentCert = $chain[count($chain) - 1];
for ($i = 0; $i < count($this->CAs); $i++) {
$ca = $this->CAs[$i];
if ($currentCert['tbsCertificate']['issuer'] === $ca['tbsCertificate']['subject']) {
$authorityKey = $this->getExtension('id-ce-authorityKeyIdentifier', $currentCert);
$subjectKeyID = $this->getExtension('id-ce-subjectKeyIdentifier', $ca);
switch (true) {
case !is_array($authorityKey):
case is_array($authorityKey) && isset($authorityKey['keyIdentifier']) && $authorityKey['keyIdentifier'] === $subjectKeyID:
if ($currentCert === $ca) {
break 3;
}
$chain[] = $ca;
break 2;
}
}
}
if ($i == count($this->CAs)) {
break;
}
}
foreach ($chain as $key => $value) {
$chain[$key] = new X509();
$chain[$key]->loadX509($value);
}
return $chain;
}
/**
* Set public key
*
* Key needs to be a \phpseclib\Crypt\RSA object
*
* @param object $key
* @access public
* @return bool
*/
function setPublicKey($key)
{
$key->setPublicKey();
$this->publicKey = $key;
}
/**
* Set private key
*
* Key needs to be a \phpseclib\Crypt\RSA object
*
* @param object $key
* @access public
*/
function setPrivateKey($key)
{
$this->privateKey = $key;
}
/**
* Set challenge
*
* Used for SPKAC CSR's
*
* @param string $challenge
* @access public
*/
function setChallenge($challenge)
{
$this->challenge = $challenge;
}
/**
* Gets the public key
*
* Returns a \phpseclib\Crypt\RSA object or a false.
*
* @access public
* @return mixed
*/
function getPublicKey()
{
if (isset($this->publicKey)) {
return $this->publicKey;
}
if (isset($this->currentCert) && is_array($this->currentCert)) {
foreach (array('tbsCertificate/subjectPublicKeyInfo', 'certificationRequestInfo/subjectPKInfo') as $path) {
$keyinfo = $this->_subArray($this->currentCert, $path);
if (!empty($keyinfo)) {
break;
}
}
}
if (empty($keyinfo)) {
return false;
}
$key = $keyinfo['subjectPublicKey'];
switch ($keyinfo['algorithm']['algorithm']) {
case 'rsaEncryption':
$publicKey = new RSA();
$publicKey->loadKey($key);
$publicKey->setPublicKey();
break;
default:
return false;
}
return $publicKey;
}
/**
* Load a Certificate Signing Request
*
* @param string|array $csr
* @param int $mode
* @access public
* @return mixed
*/
function loadCSR($csr, $mode = self::FORMAT_AUTO_DETECT)
{
if (is_array($csr) && isset($csr['certificationRequestInfo'])) {
unset($this->currentCert);
unset($this->currentKeyIdentifier);
unset($this->signatureSubject);
$this->dn = $csr['certificationRequestInfo']['subject'];
if (!isset($this->dn)) {
return false;
}
$this->currentCert = $csr;
return $csr;
}
// see http://tools.ietf.org/html/rfc2986
$asn1 = new ASN1();
if ($mode != self::FORMAT_DER) {
$newcsr = $this->_extractBER($csr);
if ($mode == self::FORMAT_PEM && $csr == $newcsr) {
return false;
}
$csr = $newcsr;
}
$orig = $csr;
if ($csr === false) {
$this->currentCert = false;
return false;
}
$asn1->loadOIDs($this->oids);
$decoded = $asn1->decodeBER($csr);
if (empty($decoded)) {
$this->currentCert = false;
return false;
}
$csr = $asn1->asn1map($decoded[0], $this->CertificationRequest);
if (!isset($csr) || $csr === false) {
$this->currentCert = false;
return false;
}
$this->_mapInAttributes($csr, 'certificationRequestInfo/attributes', $asn1);
$this->_mapInDNs($csr, 'certificationRequestInfo/subject/rdnSequence', $asn1);
$this->dn = $csr['certificationRequestInfo']['subject'];
$this->signatureSubject = substr($orig, $decoded[0]['content'][0]['start'], $decoded[0]['content'][0]['length']);
$algorithm = &$csr['certificationRequestInfo']['subjectPKInfo']['algorithm']['algorithm'];
$key = &$csr['certificationRequestInfo']['subjectPKInfo']['subjectPublicKey'];
$key = $this->_reformatKey($algorithm, $key);
switch ($algorithm) {
case 'rsaEncryption':
$this->publicKey = new RSA();
$this->publicKey->loadKey($key);
$this->publicKey->setPublicKey();
break;
default:
$this->publicKey = null;
}
$this->currentKeyIdentifier = null;
$this->currentCert = $csr;
return $csr;
}
/**
* Save CSR request
*
* @param array $csr
* @param int $format optional
* @access public
* @return string
*/
function saveCSR($csr, $format = self::FORMAT_PEM)
{
if (!is_array($csr) || !isset($csr['certificationRequestInfo'])) {
return false;
}
switch (true) {
case !($algorithm = $this->_subArray($csr, 'certificationRequestInfo/subjectPKInfo/algorithm/algorithm')):
case is_object($csr['certificationRequestInfo']['subjectPKInfo']['subjectPublicKey']):
break;
default:
switch ($algorithm) {
case 'rsaEncryption':
$csr['certificationRequestInfo']['subjectPKInfo']['subjectPublicKey']
= base64_encode("\0" . base64_decode(preg_replace('#-.+-|[\r\n]#', '', $csr['certificationRequestInfo']['subjectPKInfo']['subjectPublicKey'])));
$csr['certificationRequestInfo']['subjectPKInfo']['algorithm']['parameters'] = null;
$csr['signatureAlgorithm']['parameters'] = null;
$csr['certificationRequestInfo']['signature']['parameters'] = null;
}
}
$asn1 = new ASN1();
$asn1->loadOIDs($this->oids);
$filters = array();
$filters['certificationRequestInfo']['subject']['rdnSequence']['value']
= array('type' => ASN1::TYPE_UTF8_STRING);
$asn1->loadFilters($filters);
$this->_mapOutDNs($csr, 'certificationRequestInfo/subject/rdnSequence', $asn1);
$this->_mapOutAttributes($csr, 'certificationRequestInfo/attributes', $asn1);
$csr = $asn1->encodeDER($csr, $this->CertificationRequest);
switch ($format) {
case self::FORMAT_DER:
return $csr;
// case self::FORMAT_PEM:
default:
return "-----BEGIN CERTIFICATE REQUEST-----\r\n" . chunk_split(base64_encode($csr), 64) . '-----END CERTIFICATE REQUEST-----';
}
}
/**
* Load a SPKAC CSR
*
* SPKAC's are produced by the HTML5 keygen element:
*
* https://developer.mozilla.org/en-US/docs/HTML/Element/keygen
*
* @param string|array $spkac
* @access public
* @return mixed
*/
function loadSPKAC($spkac)
{
if (is_array($spkac) && isset($spkac['publicKeyAndChallenge'])) {
unset($this->currentCert);
unset($this->currentKeyIdentifier);
unset($this->signatureSubject);
$this->currentCert = $spkac;
return $spkac;
}
// see http://www.w3.org/html/wg/drafts/html/master/forms.html#signedpublickeyandchallenge
$asn1 = new ASN1();
// OpenSSL produces SPKAC's that are preceded by the string SPKAC=
$temp = preg_replace('#(?:SPKAC=)|[ \r\n\\\]#', '', $spkac);
$temp = preg_match('#^[a-zA-Z\d/+]*={0,2}$#', $temp) ? base64_decode($temp) : false;
if ($temp != false) {
$spkac = $temp;
}
$orig = $spkac;
if ($spkac === false) {
$this->currentCert = false;
return false;
}
$asn1->loadOIDs($this->oids);
$decoded = $asn1->decodeBER($spkac);
if (empty($decoded)) {
$this->currentCert = false;
return false;
}
$spkac = $asn1->asn1map($decoded[0], $this->SignedPublicKeyAndChallenge);
if (!isset($spkac) || $spkac === false) {
$this->currentCert = false;
return false;
}
$this->signatureSubject = substr($orig, $decoded[0]['content'][0]['start'], $decoded[0]['content'][0]['length']);
$algorithm = &$spkac['publicKeyAndChallenge']['spki']['algorithm']['algorithm'];
$key = &$spkac['publicKeyAndChallenge']['spki']['subjectPublicKey'];
$key = $this->_reformatKey($algorithm, $key);
switch ($algorithm) {
case 'rsaEncryption':
$this->publicKey = new RSA();
$this->publicKey->loadKey($key);
$this->publicKey->setPublicKey();
break;
default:
$this->publicKey = null;
}
$this->currentKeyIdentifier = null;
$this->currentCert = $spkac;
return $spkac;
}
/**
* Save a SPKAC CSR request
*
* @param string|array $spkac
* @param int $format optional
* @access public
* @return string
*/
function saveSPKAC($spkac, $format = self::FORMAT_PEM)
{
if (!is_array($spkac) || !isset($spkac['publicKeyAndChallenge'])) {
return false;
}
$algorithm = $this->_subArray($spkac, 'publicKeyAndChallenge/spki/algorithm/algorithm');
switch (true) {
case !$algorithm:
case is_object($spkac['publicKeyAndChallenge']['spki']['subjectPublicKey']):
break;
default:
switch ($algorithm) {
case 'rsaEncryption':
$spkac['publicKeyAndChallenge']['spki']['subjectPublicKey']
= base64_encode("\0" . base64_decode(preg_replace('#-.+-|[\r\n]#', '', $spkac['publicKeyAndChallenge']['spki']['subjectPublicKey'])));
}
}
$asn1 = new ASN1();
$asn1->loadOIDs($this->oids);
$spkac = $asn1->encodeDER($spkac, $this->SignedPublicKeyAndChallenge);
switch ($format) {
case self::FORMAT_DER:
return $spkac;
// case self::FORMAT_PEM:
default:
// OpenSSL's implementation of SPKAC requires the SPKAC be preceded by SPKAC= and since there are pretty much
// no other SPKAC decoders phpseclib will use that same format
return 'SPKAC=' . base64_encode($spkac);
}
}
/**
* Load a Certificate Revocation List
*
* @param string $crl
* @param int $mode
* @access public
* @return mixed
*/
function loadCRL($crl, $mode = self::FORMAT_AUTO_DETECT)
{
if (is_array($crl) && isset($crl['tbsCertList'])) {
$this->currentCert = $crl;
unset($this->signatureSubject);
return $crl;
}
$asn1 = new ASN1();
if ($mode != self::FORMAT_DER) {
$newcrl = $this->_extractBER($crl);
if ($mode == self::FORMAT_PEM && $crl == $newcrl) {
return false;
}
$crl = $newcrl;
}
$orig = $crl;
if ($crl === false) {
$this->currentCert = false;
return false;
}
$asn1->loadOIDs($this->oids);
$decoded = $asn1->decodeBER($crl);
if (empty($decoded)) {
$this->currentCert = false;
return false;
}
$crl = $asn1->asn1map($decoded[0], $this->CertificateList);
if (!isset($crl) || $crl === false) {
$this->currentCert = false;
return false;
}
$this->signatureSubject = substr($orig, $decoded[0]['content'][0]['start'], $decoded[0]['content'][0]['length']);
$this->_mapInDNs($crl, 'tbsCertList/issuer/rdnSequence', $asn1);
if ($this->_isSubArrayValid($crl, 'tbsCertList/crlExtensions')) {
$this->_mapInExtensions($crl, 'tbsCertList/crlExtensions', $asn1);
}
if ($this->_isSubArrayValid($crl, 'tbsCertList/revokedCertificates')) {
$rclist_ref = &$this->_subArrayUnchecked($crl, 'tbsCertList/revokedCertificates');
if ($rclist_ref) {
$rclist = $crl['tbsCertList']['revokedCertificates'];
foreach ($rclist as $i => $extension) {
if ($this->_isSubArrayValid($rclist, "$i/crlEntryExtensions", $asn1)) {
$this->_mapInExtensions($rclist_ref, "$i/crlEntryExtensions", $asn1);
}
}
}
}
$this->currentKeyIdentifier = null;
$this->currentCert = $crl;
return $crl;
}
/**
* Save Certificate Revocation List.
*
* @param array $crl
* @param int $format optional
* @access public
* @return string
*/
function saveCRL($crl, $format = self::FORMAT_PEM)
{
if (!is_array($crl) || !isset($crl['tbsCertList'])) {
return false;
}
$asn1 = new ASN1();
$asn1->loadOIDs($this->oids);
$filters = array();
$filters['tbsCertList']['issuer']['rdnSequence']['value']
= array('type' => ASN1::TYPE_UTF8_STRING);
$filters['tbsCertList']['signature']['parameters']
= array('type' => ASN1::TYPE_UTF8_STRING);
$filters['signatureAlgorithm']['parameters']
= array('type' => ASN1::TYPE_UTF8_STRING);
if (empty($crl['tbsCertList']['signature']['parameters'])) {
$filters['tbsCertList']['signature']['parameters']
= array('type' => ASN1::TYPE_NULL);
}
if (empty($crl['signatureAlgorithm']['parameters'])) {
$filters['signatureAlgorithm']['parameters']
= array('type' => ASN1::TYPE_NULL);
}
$asn1->loadFilters($filters);
$this->_mapOutDNs($crl, 'tbsCertList/issuer/rdnSequence', $asn1);
$this->_mapOutExtensions($crl, 'tbsCertList/crlExtensions', $asn1);
$rclist = &$this->_subArray($crl, 'tbsCertList/revokedCertificates');
if (is_array($rclist)) {
foreach ($rclist as $i => $extension) {
$this->_mapOutExtensions($rclist, "$i/crlEntryExtensions", $asn1);
}
}
$crl = $asn1->encodeDER($crl, $this->CertificateList);
switch ($format) {
case self::FORMAT_DER:
return $crl;
// case self::FORMAT_PEM:
default:
return "-----BEGIN X509 CRL-----\r\n" . chunk_split(base64_encode($crl), 64) . '-----END X509 CRL-----';
}
}
/**
* Helper function to build a time field according to RFC 3280 section
* - 4.1.2.5 Validity
* - 5.1.2.4 This Update
* - 5.1.2.5 Next Update
* - 5.1.2.6 Revoked Certificates
* by choosing utcTime iff year of date given is before 2050 and generalTime else.
*
* @param string $date in format date('D, d M Y H:i:s O')
* @access private
* @return array
*/
function _timeField($date)
{
if ($date instanceof Element) {
return $date;
}
$dateObj = new DateTime($date, new DateTimeZone('GMT'));
$year = $dateObj->format('Y'); // the same way ASN1.php parses this
if ($year < 2050) {
return array('utcTime' => $date);
} else {
return array('generalTime' => $date);
}
}
/**
* Sign an X.509 certificate
*
* $issuer's private key needs to be loaded.
* $subject can be either an existing X.509 cert (if you want to resign it),
* a CSR or something with the DN and public key explicitly set.
*
* @param \phpseclib\File\X509 $issuer
* @param \phpseclib\File\X509 $subject
* @param string $signatureAlgorithm optional
* @access public
* @return mixed
*/
function sign($issuer, $subject, $signatureAlgorithm = 'sha1WithRSAEncryption')
{
if (!is_object($issuer->privateKey) || empty($issuer->dn)) {
return false;
}
if (isset($subject->publicKey) && !($subjectPublicKey = $subject->_formatSubjectPublicKey())) {
return false;
}
$currentCert = isset($this->currentCert) ? $this->currentCert : null;
$signatureSubject = isset($this->signatureSubject) ? $this->signatureSubject: null;
if (isset($subject->currentCert) && is_array($subject->currentCert) && isset($subject->currentCert['tbsCertificate'])) {
$this->currentCert = $subject->currentCert;
$this->currentCert['tbsCertificate']['signature']['algorithm'] = $signatureAlgorithm;
$this->currentCert['signatureAlgorithm']['algorithm'] = $signatureAlgorithm;
if (!empty($this->startDate)) {
$this->currentCert['tbsCertificate']['validity']['notBefore'] = $this->_timeField($this->startDate);
}
if (!empty($this->endDate)) {
$this->currentCert['tbsCertificate']['validity']['notAfter'] = $this->_timeField($this->endDate);
}
if (!empty($this->serialNumber)) {
$this->currentCert['tbsCertificate']['serialNumber'] = $this->serialNumber;
}
if (!empty($subject->dn)) {
$this->currentCert['tbsCertificate']['subject'] = $subject->dn;
}
if (!empty($subject->publicKey)) {
$this->currentCert['tbsCertificate']['subjectPublicKeyInfo'] = $subjectPublicKey;
}
$this->removeExtension('id-ce-authorityKeyIdentifier');
if (isset($subject->domains)) {
$this->removeExtension('id-ce-subjectAltName');
}
} elseif (isset($subject->currentCert) && is_array($subject->currentCert) && isset($subject->currentCert['tbsCertList'])) {
return false;
} else {
if (!isset($subject->publicKey)) {
return false;
}
$startDate = new DateTime('now', new DateTimeZone(@date_default_timezone_get()));
$startDate = !empty($this->startDate) ? $this->startDate : $startDate->format('D, d M Y H:i:s O');
$endDate = new DateTime('+1 year', new DateTimeZone(@date_default_timezone_get()));
$endDate = !empty($this->endDate) ? $this->endDate : $endDate->format('D, d M Y H:i:s O');
/* "The serial number MUST be a positive integer"
"Conforming CAs MUST NOT use serialNumber values longer than 20 octets."
-- https://tools.ietf.org/html/rfc5280#section-4.1.2.2
for the integer to be positive the leading bit needs to be 0 hence the
application of a bitmap
*/
$serialNumber = !empty($this->serialNumber) ?
$this->serialNumber :
new BigInteger(Random::string(20) & ("\x7F" . str_repeat("\xFF", 19)), 256);
$this->currentCert = array(
'tbsCertificate' =>
array(
'version' => 'v3',
'serialNumber' => $serialNumber, // $this->setSerialNumber()
'signature' => array('algorithm' => $signatureAlgorithm),
'issuer' => false, // this is going to be overwritten later
'validity' => array(
'notBefore' => $this->_timeField($startDate), // $this->setStartDate()
'notAfter' => $this->_timeField($endDate) // $this->setEndDate()
),
'subject' => $subject->dn,
'subjectPublicKeyInfo' => $subjectPublicKey
),
'signatureAlgorithm' => array('algorithm' => $signatureAlgorithm),
'signature' => false // this is going to be overwritten later
);
// Copy extensions from CSR.
$csrexts = $subject->getAttribute('pkcs-9-at-extensionRequest', 0);
if (!empty($csrexts)) {
$this->currentCert['tbsCertificate']['extensions'] = $csrexts;
}
}
$this->currentCert['tbsCertificate']['issuer'] = $issuer->dn;
if (isset($issuer->currentKeyIdentifier)) {
$this->setExtension('id-ce-authorityKeyIdentifier', array(
//'authorityCertIssuer' => array(
// array(
// 'directoryName' => $issuer->dn
// )
//),
'keyIdentifier' => $issuer->currentKeyIdentifier
));
//$extensions = &$this->currentCert['tbsCertificate']['extensions'];
//if (isset($issuer->serialNumber)) {
// $extensions[count($extensions) - 1]['authorityCertSerialNumber'] = $issuer->serialNumber;
//}
//unset($extensions);
}
if (isset($subject->currentKeyIdentifier)) {
$this->setExtension('id-ce-subjectKeyIdentifier', $subject->currentKeyIdentifier);
}
$altName = array();
if (isset($subject->domains) && count($subject->domains)) {
$altName = array_map(array('\phpseclib\File\X509', '_dnsName'), $subject->domains);
}
if (isset($subject->ipAddresses) && count($subject->ipAddresses)) {
// should an IP address appear as the CN if no domain name is specified? idk
//$ips = count($subject->domains) ? $subject->ipAddresses : array_slice($subject->ipAddresses, 1);
$ipAddresses = array();
foreach ($subject->ipAddresses as $ipAddress) {
$encoded = $subject->_ipAddress($ipAddress);
if ($encoded !== false) {
$ipAddresses[] = $encoded;
}
}
if (count($ipAddresses)) {
$altName = array_merge($altName, $ipAddresses);
}
}
if (!empty($altName)) {
$this->setExtension('id-ce-subjectAltName', $altName);
}
if ($this->caFlag) {
$keyUsage = $this->getExtension('id-ce-keyUsage');
if (!$keyUsage) {
$keyUsage = array();
}
$this->setExtension(
'id-ce-keyUsage',
array_values(array_unique(array_merge($keyUsage, array('cRLSign', 'keyCertSign'))))
);
$basicConstraints = $this->getExtension('id-ce-basicConstraints');
if (!$basicConstraints) {
$basicConstraints = array();
}
$this->setExtension(
'id-ce-basicConstraints',
array_unique(array_merge(array('cA' => true), $basicConstraints)),
true
);
if (!isset($subject->currentKeyIdentifier)) {
$this->setExtension('id-ce-subjectKeyIdentifier', base64_encode($this->computeKeyIdentifier($this->currentCert)), false, false);
}
}
// resync $this->signatureSubject
// save $tbsCertificate in case there are any \phpseclib\File\ASN1\Element objects in it
$tbsCertificate = $this->currentCert['tbsCertificate'];
$this->loadX509($this->saveX509($this->currentCert));
$result = $this->_sign($issuer->privateKey, $signatureAlgorithm);
$result['tbsCertificate'] = $tbsCertificate;
$this->currentCert = $currentCert;
$this->signatureSubject = $signatureSubject;
return $result;
}
/**
* Sign a CSR
*
* @access public
* @return mixed
*/
function signCSR($signatureAlgorithm = 'sha1WithRSAEncryption')
{
if (!is_object($this->privateKey) || empty($this->dn)) {
return false;
}
$origPublicKey = $this->publicKey;
$class = get_class($this->privateKey);
$this->publicKey = new $class();
$this->publicKey->loadKey($this->privateKey->getPublicKey());
$this->publicKey->setPublicKey();
if (!($publicKey = $this->_formatSubjectPublicKey())) {
return false;
}
$this->publicKey = $origPublicKey;
$currentCert = isset($this->currentCert) ? $this->currentCert : null;
$signatureSubject = isset($this->signatureSubject) ? $this->signatureSubject: null;
if (isset($this->currentCert) && is_array($this->currentCert) && isset($this->currentCert['certificationRequestInfo'])) {
$this->currentCert['signatureAlgorithm']['algorithm'] = $signatureAlgorithm;
if (!empty($this->dn)) {
$this->currentCert['certificationRequestInfo']['subject'] = $this->dn;
}
$this->currentCert['certificationRequestInfo']['subjectPKInfo'] = $publicKey;
} else {
$this->currentCert = array(
'certificationRequestInfo' =>
array(
'version' => 'v1',
'subject' => $this->dn,
'subjectPKInfo' => $publicKey
),
'signatureAlgorithm' => array('algorithm' => $signatureAlgorithm),
'signature' => false // this is going to be overwritten later
);
}
// resync $this->signatureSubject
// save $certificationRequestInfo in case there are any \phpseclib\File\ASN1\Element objects in it
$certificationRequestInfo = $this->currentCert['certificationRequestInfo'];
$this->loadCSR($this->saveCSR($this->currentCert));
$result = $this->_sign($this->privateKey, $signatureAlgorithm);
$result['certificationRequestInfo'] = $certificationRequestInfo;
$this->currentCert = $currentCert;
$this->signatureSubject = $signatureSubject;
return $result;
}
/**
* Sign a SPKAC
*
* @access public
* @return mixed
*/
function signSPKAC($signatureAlgorithm = 'sha1WithRSAEncryption')
{
if (!is_object($this->privateKey)) {
return false;
}
$origPublicKey = $this->publicKey;
$class = get_class($this->privateKey);
$this->publicKey = new $class();
$this->publicKey->loadKey($this->privateKey->getPublicKey());
$this->publicKey->setPublicKey();
$publicKey = $this->_formatSubjectPublicKey();
if (!$publicKey) {
return false;
}
$this->publicKey = $origPublicKey;
$currentCert = isset($this->currentCert) ? $this->currentCert : null;
$signatureSubject = isset($this->signatureSubject) ? $this->signatureSubject: null;
// re-signing a SPKAC seems silly but since everything else supports re-signing why not?
if (isset($this->currentCert) && is_array($this->currentCert) && isset($this->currentCert['publicKeyAndChallenge'])) {
$this->currentCert['signatureAlgorithm']['algorithm'] = $signatureAlgorithm;
$this->currentCert['publicKeyAndChallenge']['spki'] = $publicKey;
if (!empty($this->challenge)) {
// the bitwise AND ensures that the output is a valid IA5String
$this->currentCert['publicKeyAndChallenge']['challenge'] = $this->challenge & str_repeat("\x7F", strlen($this->challenge));
}
} else {
$this->currentCert = array(
'publicKeyAndChallenge' =>
array(
'spki' => $publicKey,
// quoting <https://developer.mozilla.org/en-US/docs/Web/HTML/Element/keygen>,
// "A challenge string that is submitted along with the public key. Defaults to an empty string if not specified."
// both Firefox and OpenSSL ("openssl spkac -key private.key") behave this way
// we could alternatively do this instead if we ignored the specs:
// Random::string(8) & str_repeat("\x7F", 8)
'challenge' => !empty($this->challenge) ? $this->challenge : ''
),
'signatureAlgorithm' => array('algorithm' => $signatureAlgorithm),
'signature' => false // this is going to be overwritten later
);
}
// resync $this->signatureSubject
// save $publicKeyAndChallenge in case there are any \phpseclib\File\ASN1\Element objects in it
$publicKeyAndChallenge = $this->currentCert['publicKeyAndChallenge'];
$this->loadSPKAC($this->saveSPKAC($this->currentCert));
$result = $this->_sign($this->privateKey, $signatureAlgorithm);
$result['publicKeyAndChallenge'] = $publicKeyAndChallenge;
$this->currentCert = $currentCert;
$this->signatureSubject = $signatureSubject;
return $result;
}
/**
* Sign a CRL
*
* $issuer's private key needs to be loaded.
*
* @param \phpseclib\File\X509 $issuer
* @param \phpseclib\File\X509 $crl
* @param string $signatureAlgorithm optional
* @access public
* @return mixed
*/
function signCRL($issuer, $crl, $signatureAlgorithm = 'sha1WithRSAEncryption')
{
if (!is_object($issuer->privateKey) || empty($issuer->dn)) {
return false;
}
$currentCert = isset($this->currentCert) ? $this->currentCert : null;
$signatureSubject = isset($this->signatureSubject) ? $this->signatureSubject : null;
$thisUpdate = new DateTime('now', new DateTimeZone(@date_default_timezone_get()));
$thisUpdate = !empty($this->startDate) ? $this->startDate : $thisUpdate->format('D, d M Y H:i:s O');
if (isset($crl->currentCert) && is_array($crl->currentCert) && isset($crl->currentCert['tbsCertList'])) {
$this->currentCert = $crl->currentCert;
$this->currentCert['tbsCertList']['signature']['algorithm'] = $signatureAlgorithm;
$this->currentCert['signatureAlgorithm']['algorithm'] = $signatureAlgorithm;
} else {
$this->currentCert = array(
'tbsCertList' =>
array(
'version' => 'v2',
'signature' => array('algorithm' => $signatureAlgorithm),
'issuer' => false, // this is going to be overwritten later
'thisUpdate' => $this->_timeField($thisUpdate) // $this->setStartDate()
),
'signatureAlgorithm' => array('algorithm' => $signatureAlgorithm),
'signature' => false // this is going to be overwritten later
);
}
$tbsCertList = &$this->currentCert['tbsCertList'];
$tbsCertList['issuer'] = $issuer->dn;
$tbsCertList['thisUpdate'] = $this->_timeField($thisUpdate);
if (!empty($this->endDate)) {
$tbsCertList['nextUpdate'] = $this->_timeField($this->endDate); // $this->setEndDate()
} else {
unset($tbsCertList['nextUpdate']);
}
if (!empty($this->serialNumber)) {
$crlNumber = $this->serialNumber;
} else {
$crlNumber = $this->getExtension('id-ce-cRLNumber');
// "The CRL number is a non-critical CRL extension that conveys a
// monotonically increasing sequence number for a given CRL scope and
// CRL issuer. This extension allows users to easily determine when a
// particular CRL supersedes another CRL."
// -- https://tools.ietf.org/html/rfc5280#section-5.2.3
$crlNumber = $crlNumber !== false ? $crlNumber->add(new BigInteger(1)) : null;
}
$this->removeExtension('id-ce-authorityKeyIdentifier');
$this->removeExtension('id-ce-issuerAltName');
// Be sure version >= v2 if some extension found.
$version = isset($tbsCertList['version']) ? $tbsCertList['version'] : 0;
if (!$version) {
if (!empty($tbsCertList['crlExtensions'])) {
$version = 1; // v2.
} elseif (!empty($tbsCertList['revokedCertificates'])) {
foreach ($tbsCertList['revokedCertificates'] as $cert) {
if (!empty($cert['crlEntryExtensions'])) {
$version = 1; // v2.
}
}
}
if ($version) {
$tbsCertList['version'] = $version;
}
}
// Store additional extensions.
if (!empty($tbsCertList['version'])) { // At least v2.
if (!empty($crlNumber)) {
$this->setExtension('id-ce-cRLNumber', $crlNumber);
}
if (isset($issuer->currentKeyIdentifier)) {
$this->setExtension('id-ce-authorityKeyIdentifier', array(
//'authorityCertIssuer' => array(
// array(
// 'directoryName' => $issuer->dn
// )
//),
'keyIdentifier' => $issuer->currentKeyIdentifier
));
//$extensions = &$tbsCertList['crlExtensions'];
//if (isset($issuer->serialNumber)) {
// $extensions[count($extensions) - 1]['authorityCertSerialNumber'] = $issuer->serialNumber;
//}
//unset($extensions);
}
$issuerAltName = $this->getExtension('id-ce-subjectAltName', $issuer->currentCert);
if ($issuerAltName !== false) {
$this->setExtension('id-ce-issuerAltName', $issuerAltName);
}
}
if (empty($tbsCertList['revokedCertificates'])) {
unset($tbsCertList['revokedCertificates']);
}
unset($tbsCertList);
// resync $this->signatureSubject
// save $tbsCertList in case there are any \phpseclib\File\ASN1\Element objects in it
$tbsCertList = $this->currentCert['tbsCertList'];
$this->loadCRL($this->saveCRL($this->currentCert));
$result = $this->_sign($issuer->privateKey, $signatureAlgorithm);
$result['tbsCertList'] = $tbsCertList;
$this->currentCert = $currentCert;
$this->signatureSubject = $signatureSubject;
return $result;
}
/**
* X.509 certificate signing helper function.
*
* @param \phpseclib\File\X509 $key
* @param string $signatureAlgorithm
* @access public
* @return mixed
*/
function _sign($key, $signatureAlgorithm)
{
if ($key instanceof RSA) {
switch ($signatureAlgorithm) {
case 'md2WithRSAEncryption':
case 'md5WithRSAEncryption':
case 'sha1WithRSAEncryption':
case 'sha224WithRSAEncryption':
case 'sha256WithRSAEncryption':
case 'sha384WithRSAEncryption':
case 'sha512WithRSAEncryption':
$key->setHash(preg_replace('#WithRSAEncryption$#', '', $signatureAlgorithm));
$key->setSignatureMode(RSA::SIGNATURE_PKCS1);
$this->currentCert['signature'] = base64_encode("\0" . $key->sign($this->signatureSubject));
return $this->currentCert;
}
}
return false;
}
/**
* Set certificate start date
*
* @param string $date
* @access public
*/
function setStartDate($date)
{
if (!is_object($date) || !is_a($date, 'DateTime')) {
$date = new DateTime($date, new DateTimeZone(@date_default_timezone_get()));
}
$this->startDate = $date->format('D, d M Y H:i:s O');
}
/**
* Set certificate end date
*
* @param string $date
* @access public
*/
function setEndDate($date)
{
/*
To indicate that a certificate has no well-defined expiration date,
the notAfter SHOULD be assigned the GeneralizedTime value of
99991231235959Z.
-- http://tools.ietf.org/html/rfc5280#section-4.1.2.5
*/
if (strtolower($date) == 'lifetime') {
$temp = '99991231235959Z';
$asn1 = new ASN1();
$temp = chr(ASN1::TYPE_GENERALIZED_TIME) . $asn1->_encodeLength(strlen($temp)) . $temp;
$this->endDate = new Element($temp);
} else {
if (!is_object($date) || !is_a($date, 'DateTime')) {
$date = new DateTime($date, new DateTimeZone(@date_default_timezone_get()));
}
$this->endDate = $date->format('D, d M Y H:i:s O');
}
}
/**
* Set Serial Number
*
* @param string $serial
* @param int $base optional
* @access public
*/
function setSerialNumber($serial, $base = -256)
{
$this->serialNumber = new BigInteger($serial, $base);
}
/**
* Turns the certificate into a certificate authority
*
* @access public
*/
function makeCA()
{
$this->caFlag = true;
}
/**
* Check for validity of subarray
*
* This is intended for use in conjunction with _subArrayUnchecked(),
* implementing the checks included in _subArray() but without copying
* a potentially large array by passing its reference by-value to is_array().
*
* @param array $root
* @param string $path
* @return boolean
* @access private
*/
function _isSubArrayValid($root, $path)
{
if (!is_array($root)) {
return false;
}
foreach (explode('/', $path) as $i) {
if (!is_array($root)) {
return false;
}
if (!isset($root[$i])) {
return true;
}
$root = $root[$i];
}
return true;
}
/**
* Get a reference to a subarray
*
* This variant of _subArray() does no is_array() checking,
* so $root should be checked with _isSubArrayValid() first.
*
* This is here for performance reasons:
* Passing a reference (i.e. $root) by-value (i.e. to is_array())
* creates a copy. If $root is an especially large array, this is expensive.
*
* @param array $root
* @param string $path absolute path with / as component separator
* @param bool $create optional
* @access private
* @return array|false
*/
function &_subArrayUnchecked(&$root, $path, $create = false)
{
$false = false;
foreach (explode('/', $path) as $i) {
if (!isset($root[$i])) {
if (!$create) {
return $false;
}
$root[$i] = array();
}
$root = &$root[$i];
}
return $root;
}
/**
* Get a reference to a subarray
*
* @param array $root
* @param string $path absolute path with / as component separator
* @param bool $create optional
* @access private
* @return array|false
*/
function &_subArray(&$root, $path, $create = false)
{
$false = false;
if (!is_array($root)) {
return $false;
}
foreach (explode('/', $path) as $i) {
if (!is_array($root)) {
return $false;
}
if (!isset($root[$i])) {
if (!$create) {
return $false;
}
$root[$i] = array();
}
$root = &$root[$i];
}
return $root;
}
/**
* Get a reference to an extension subarray
*
* @param array $root
* @param string $path optional absolute path with / as component separator
* @param bool $create optional
* @access private
* @return array|false
*/
function &_extensions(&$root, $path = null, $create = false)
{
if (!isset($root)) {
$root = $this->currentCert;
}
switch (true) {
case !empty($path):
case !is_array($root):
break;
case isset($root['tbsCertificate']):
$path = 'tbsCertificate/extensions';
break;
case isset($root['tbsCertList']):
$path = 'tbsCertList/crlExtensions';
break;
case isset($root['certificationRequestInfo']):
$pth = 'certificationRequestInfo/attributes';
$attributes = &$this->_subArray($root, $pth, $create);
if (is_array($attributes)) {
foreach ($attributes as $key => $value) {
if ($value['type'] == 'pkcs-9-at-extensionRequest') {
$path = "$pth/$key/value/0";
break 2;
}
}
if ($create) {
$key = count($attributes);
$attributes[] = array('type' => 'pkcs-9-at-extensionRequest', 'value' => array());
$path = "$pth/$key/value/0";
}
}
break;
}
$extensions = &$this->_subArray($root, $path, $create);
if (!is_array($extensions)) {
$false = false;
return $false;
}
return $extensions;
}
/**
* Remove an Extension
*
* @param string $id
* @param string $path optional
* @access private
* @return bool
*/
function _removeExtension($id, $path = null)
{
$extensions = &$this->_extensions($this->currentCert, $path);
if (!is_array($extensions)) {
return false;
}
$result = false;
foreach ($extensions as $key => $value) {
if ($value['extnId'] == $id) {
unset($extensions[$key]);
$result = true;
}
}
$extensions = array_values($extensions);
// fix for https://bugs.php.net/75433 affecting PHP 7.2
if (!isset($extensions[0])) {
$extensions = array_splice($extensions, 0, 0);
}
return $result;
}
/**
* Get an Extension
*
* Returns the extension if it exists and false if not
*
* @param string $id
* @param array $cert optional
* @param string $path optional
* @access private
* @return mixed
*/
function _getExtension($id, $cert = null, $path = null)
{
$extensions = $this->_extensions($cert, $path);
if (!is_array($extensions)) {
return false;
}
foreach ($extensions as $key => $value) {
if ($value['extnId'] == $id) {
return $value['extnValue'];
}
}
return false;
}
/**
* Returns a list of all extensions in use
*
* @param array $cert optional
* @param string $path optional
* @access private
* @return array
*/
function _getExtensions($cert = null, $path = null)
{
$exts = $this->_extensions($cert, $path);
$extensions = array();
if (is_array($exts)) {
foreach ($exts as $extension) {
$extensions[] = $extension['extnId'];
}
}
return $extensions;
}
/**
* Set an Extension
*
* @param string $id
* @param mixed $value
* @param bool $critical optional
* @param bool $replace optional
* @param string $path optional
* @access private
* @return bool
*/
function _setExtension($id, $value, $critical = false, $replace = true, $path = null)
{
$extensions = &$this->_extensions($this->currentCert, $path, true);
if (!is_array($extensions)) {
return false;
}
$newext = array('extnId' => $id, 'critical' => $critical, 'extnValue' => $value);
foreach ($extensions as $key => $value) {
if ($value['extnId'] == $id) {
if (!$replace) {
return false;
}
$extensions[$key] = $newext;
return true;
}
}
$extensions[] = $newext;
return true;
}
/**
* Remove a certificate, CSR or CRL Extension
*
* @param string $id
* @access public
* @return bool
*/
function removeExtension($id)
{
return $this->_removeExtension($id);
}
/**
* Get a certificate, CSR or CRL Extension
*
* Returns the extension if it exists and false if not
*
* @param string $id
* @param array $cert optional
* @access public
* @return mixed
*/
function getExtension($id, $cert = null)
{
return $this->_getExtension($id, $cert);
}
/**
* Returns a list of all extensions in use in certificate, CSR or CRL
*
* @param array $cert optional
* @access public
* @return array
*/
function getExtensions($cert = null)
{
return $this->_getExtensions($cert);
}
/**
* Set a certificate, CSR or CRL Extension
*
* @param string $id
* @param mixed $value
* @param bool $critical optional
* @param bool $replace optional
* @access public
* @return bool
*/
function setExtension($id, $value, $critical = false, $replace = true)
{
return $this->_setExtension($id, $value, $critical, $replace);
}
/**
* Remove a CSR attribute.
*
* @param string $id
* @param int $disposition optional
* @access public
* @return bool
*/
function removeAttribute($id, $disposition = self::ATTR_ALL)
{
$attributes = &$this->_subArray($this->currentCert, 'certificationRequestInfo/attributes');
if (!is_array($attributes)) {
return false;
}
$result = false;
foreach ($attributes as $key => $attribute) {
if ($attribute['type'] == $id) {
$n = count($attribute['value']);
switch (true) {
case $disposition == self::ATTR_APPEND:
case $disposition == self::ATTR_REPLACE:
return false;
case $disposition >= $n:
$disposition -= $n;
break;
case $disposition == self::ATTR_ALL:
case $n == 1:
unset($attributes[$key]);
$result = true;
break;
default:
unset($attributes[$key]['value'][$disposition]);
$attributes[$key]['value'] = array_values($attributes[$key]['value']);
$result = true;
break;
}
if ($result && $disposition != self::ATTR_ALL) {
break;
}
}
}
$attributes = array_values($attributes);
return $result;
}
/**
* Get a CSR attribute
*
* Returns the attribute if it exists and false if not
*
* @param string $id
* @param int $disposition optional
* @param array $csr optional
* @access public
* @return mixed
*/
function getAttribute($id, $disposition = self::ATTR_ALL, $csr = null)
{
if (empty($csr)) {
$csr = $this->currentCert;
}
$attributes = $this->_subArray($csr, 'certificationRequestInfo/attributes');
if (!is_array($attributes)) {
return false;
}
foreach ($attributes as $key => $attribute) {
if ($attribute['type'] == $id) {
$n = count($attribute['value']);
switch (true) {
case $disposition == self::ATTR_APPEND:
case $disposition == self::ATTR_REPLACE:
return false;
case $disposition == self::ATTR_ALL:
return $attribute['value'];
case $disposition >= $n:
$disposition -= $n;
break;
default:
return $attribute['value'][$disposition];
}
}
}
return false;
}
/**
* Returns a list of all CSR attributes in use
*
* @param array $csr optional
* @access public
* @return array
*/
function getAttributes($csr = null)
{
if (empty($csr)) {
$csr = $this->currentCert;
}
$attributes = $this->_subArray($csr, 'certificationRequestInfo/attributes');
$attrs = array();
if (is_array($attributes)) {
foreach ($attributes as $attribute) {
$attrs[] = $attribute['type'];
}
}
return $attrs;
}
/**
* Set a CSR attribute
*
* @param string $id
* @param mixed $value
* @param bool $disposition optional
* @access public
* @return bool
*/
function setAttribute($id, $value, $disposition = self::ATTR_ALL)
{
$attributes = &$this->_subArray($this->currentCert, 'certificationRequestInfo/attributes', true);
if (!is_array($attributes)) {
return false;
}
switch ($disposition) {
case self::ATTR_REPLACE:
$disposition = self::ATTR_APPEND;
case self::ATTR_ALL:
$this->removeAttribute($id);
break;
}
foreach ($attributes as $key => $attribute) {
if ($attribute['type'] == $id) {
$n = count($attribute['value']);
switch (true) {
case $disposition == self::ATTR_APPEND:
$last = $key;
break;
case $disposition >= $n:
$disposition -= $n;
break;
default:
$attributes[$key]['value'][$disposition] = $value;
return true;
}
}
}
switch (true) {
case $disposition >= 0:
return false;
case isset($last):
$attributes[$last]['value'][] = $value;
break;
default:
$attributes[] = array('type' => $id, 'value' => $disposition == self::ATTR_ALL ? $value: array($value));
break;
}
return true;
}
/**
* Sets the subject key identifier
*
* This is used by the id-ce-authorityKeyIdentifier and the id-ce-subjectKeyIdentifier extensions.
*
* @param string $value
* @access public
*/
function setKeyIdentifier($value)
{
if (empty($value)) {
unset($this->currentKeyIdentifier);
} else {
$this->currentKeyIdentifier = base64_encode($value);
}
}
/**
* Compute a public key identifier.
*
* Although key identifiers may be set to any unique value, this function
* computes key identifiers from public key according to the two
* recommended methods (4.2.1.2 RFC 3280).
* Highly polymorphic: try to accept all possible forms of key:
* - Key object
* - \phpseclib\File\X509 object with public or private key defined
* - Certificate or CSR array
* - \phpseclib\File\ASN1\Element object
* - PEM or DER string
*
* @param mixed $key optional
* @param int $method optional
* @access public
* @return string binary key identifier
*/
function computeKeyIdentifier($key = null, $method = 1)
{
if (is_null($key)) {
$key = $this;
}
switch (true) {
case is_string($key):
break;
case is_array($key) && isset($key['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey']):
return $this->computeKeyIdentifier($key['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey'], $method);
case is_array($key) && isset($key['certificationRequestInfo']['subjectPKInfo']['subjectPublicKey']):
return $this->computeKeyIdentifier($key['certificationRequestInfo']['subjectPKInfo']['subjectPublicKey'], $method);
case !is_object($key):
return false;
case $key instanceof Element:
// Assume the element is a bitstring-packed key.
$asn1 = new ASN1();
$decoded = $asn1->decodeBER($key->element);
if (empty($decoded)) {
return false;
}
$raw = $asn1->asn1map($decoded[0], array('type' => ASN1::TYPE_BIT_STRING));
if (empty($raw)) {
return false;
}
$raw = base64_decode($raw);
// If the key is private, compute identifier from its corresponding public key.
$key = new RSA();
if (!$key->loadKey($raw)) {
return false; // Not an unencrypted RSA key.
}
if ($key->getPrivateKey() !== false) { // If private.
return $this->computeKeyIdentifier($key, $method);
}
$key = $raw; // Is a public key.
break;
case $key instanceof X509:
if (isset($key->publicKey)) {
return $this->computeKeyIdentifier($key->publicKey, $method);
}
if (isset($key->privateKey)) {
return $this->computeKeyIdentifier($key->privateKey, $method);
}
if (isset($key->currentCert['tbsCertificate']) || isset($key->currentCert['certificationRequestInfo'])) {
return $this->computeKeyIdentifier($key->currentCert, $method);
}
return false;
default: // Should be a key object (i.e.: \phpseclib\Crypt\RSA).
$key = $key->getPublicKey(RSA::PUBLIC_FORMAT_PKCS1);
break;
}
// If in PEM format, convert to binary.
$key = $this->_extractBER($key);
// Now we have the key string: compute its sha-1 sum.
$hash = new Hash('sha1');
$hash = $hash->hash($key);
if ($method == 2) {
$hash = substr($hash, -8);
$hash[0] = chr((ord($hash[0]) & 0x0F) | 0x40);
}
return $hash;
}
/**
* Format a public key as appropriate
*
* @access private
* @return array
*/
function _formatSubjectPublicKey()
{
if ($this->publicKey instanceof RSA) {
// the following two return statements do the same thing. i dunno.. i just prefer the later for some reason.
// the former is a good example of how to do fuzzing on the public key
//return new Element(base64_decode(preg_replace('#-.+-|[\r\n]#', '', $this->publicKey->getPublicKey())));
return array(
'algorithm' => array('algorithm' => 'rsaEncryption'),
'subjectPublicKey' => $this->publicKey->getPublicKey(RSA::PUBLIC_FORMAT_PKCS1)
);
}
return false;
}
/**
* Set the domain name's which the cert is to be valid for
*
* @access public
* @return array
*/
function setDomain()
{
$this->domains = func_get_args();
$this->removeDNProp('id-at-commonName');
$this->setDNProp('id-at-commonName', $this->domains[0]);
}
/**
* Set the IP Addresses's which the cert is to be valid for
*
* @access public
*/
function setIPAddress()
{
$this->ipAddresses = func_get_args();
/*
if (!isset($this->domains)) {
$this->removeDNProp('id-at-commonName');
$this->setDNProp('id-at-commonName', $this->ipAddresses[0]);
}
*/
}
/**
* Helper function to build domain array
*
* @access private
* @param string $domain
* @return array
*/
function _dnsName($domain)
{
return array('dNSName' => $domain);
}
/**
* Helper function to build IP Address array
*
* (IPv6 is not currently supported)
*
* @access private
* @param string $address
* @return array
*/
function _iPAddress($address)
{
return array('iPAddress' => $address);
}
/**
* Get the index of a revoked certificate.
*
* @param array $rclist
* @param string $serial
* @param bool $create optional
* @access private
* @return int|false
*/
function _revokedCertificate(&$rclist, $serial, $create = false)
{
$serial = new BigInteger($serial);
foreach ($rclist as $i => $rc) {
if (!($serial->compare($rc['userCertificate']))) {
return $i;
}
}
if (!$create) {
return false;
}
$i = count($rclist);
$revocationDate = new DateTime('now', new DateTimeZone(@date_default_timezone_get()));
$rclist[] = array('userCertificate' => $serial,
'revocationDate' => $this->_timeField($revocationDate->format('D, d M Y H:i:s O')));
return $i;
}
/**
* Revoke a certificate.
*
* @param string $serial
* @param string $date optional
* @access public
* @return bool
*/
function revoke($serial, $date = null)
{
if (isset($this->currentCert['tbsCertList'])) {
if (is_array($rclist = &$this->_subArray($this->currentCert, 'tbsCertList/revokedCertificates', true))) {
if ($this->_revokedCertificate($rclist, $serial) === false) { // If not yet revoked
if (($i = $this->_revokedCertificate($rclist, $serial, true)) !== false) {
if (!empty($date)) {
$rclist[$i]['revocationDate'] = $this->_timeField($date);
}
return true;
}
}
}
}
return false;
}
/**
* Unrevoke a certificate.
*
* @param string $serial
* @access public
* @return bool
*/
function unrevoke($serial)
{
if (is_array($rclist = &$this->_subArray($this->currentCert, 'tbsCertList/revokedCertificates'))) {
if (($i = $this->_revokedCertificate($rclist, $serial)) !== false) {
unset($rclist[$i]);
$rclist = array_values($rclist);
return true;
}
}
return false;
}
/**
* Get a revoked certificate.
*
* @param string $serial
* @access public
* @return mixed
*/
function getRevoked($serial)
{
if (is_array($rclist = $this->_subArray($this->currentCert, 'tbsCertList/revokedCertificates'))) {
if (($i = $this->_revokedCertificate($rclist, $serial)) !== false) {
return $rclist[$i];
}
}
return false;
}
/**
* List revoked certificates
*
* @param array $crl optional
* @access public
* @return array
*/
function listRevoked($crl = null)
{
if (!isset($crl)) {
$crl = $this->currentCert;
}
if (!isset($crl['tbsCertList'])) {
return false;
}
$result = array();
if (is_array($rclist = $this->_subArray($crl, 'tbsCertList/revokedCertificates'))) {
foreach ($rclist as $rc) {
$result[] = $rc['userCertificate']->toString();
}
}
return $result;
}
/**
* Remove a Revoked Certificate Extension
*
* @param string $serial
* @param string $id
* @access public
* @return bool
*/
function removeRevokedCertificateExtension($serial, $id)
{
if (is_array($rclist = &$this->_subArray($this->currentCert, 'tbsCertList/revokedCertificates'))) {
if (($i = $this->_revokedCertificate($rclist, $serial)) !== false) {
return $this->_removeExtension($id, "tbsCertList/revokedCertificates/$i/crlEntryExtensions");
}
}
return false;
}
/**
* Get a Revoked Certificate Extension
*
* Returns the extension if it exists and false if not
*
* @param string $serial
* @param string $id
* @param array $crl optional
* @access public
* @return mixed
*/
function getRevokedCertificateExtension($serial, $id, $crl = null)
{
if (!isset($crl)) {
$crl = $this->currentCert;
}
if (is_array($rclist = $this->_subArray($crl, 'tbsCertList/revokedCertificates'))) {
if (($i = $this->_revokedCertificate($rclist, $serial)) !== false) {
return $this->_getExtension($id, $crl, "tbsCertList/revokedCertificates/$i/crlEntryExtensions");
}
}
return false;
}
/**
* Returns a list of all extensions in use for a given revoked certificate
*
* @param string $serial
* @param array $crl optional
* @access public
* @return array
*/
function getRevokedCertificateExtensions($serial, $crl = null)
{
if (!isset($crl)) {
$crl = $this->currentCert;
}
if (is_array($rclist = $this->_subArray($crl, 'tbsCertList/revokedCertificates'))) {
if (($i = $this->_revokedCertificate($rclist, $serial)) !== false) {
return $this->_getExtensions($crl, "tbsCertList/revokedCertificates/$i/crlEntryExtensions");
}
}
return false;
}
/**
* Set a Revoked Certificate Extension
*
* @param string $serial
* @param string $id
* @param mixed $value
* @param bool $critical optional
* @param bool $replace optional
* @access public
* @return bool
*/
function setRevokedCertificateExtension($serial, $id, $value, $critical = false, $replace = true)
{
if (isset($this->currentCert['tbsCertList'])) {
if (is_array($rclist = &$this->_subArray($this->currentCert, 'tbsCertList/revokedCertificates', true))) {
if (($i = $this->_revokedCertificate($rclist, $serial, true)) !== false) {
return $this->_setExtension($id, $value, $critical, $replace, "tbsCertList/revokedCertificates/$i/crlEntryExtensions");
}
}
}
return false;
}
/**
* Extract raw BER from Base64 encoding
*
* @access private
* @param string $str
* @return string
*/
function _extractBER($str)
{
/* X.509 certs are assumed to be base64 encoded but sometimes they'll have additional things in them
* above and beyond the ceritificate.
* ie. some may have the following preceding the -----BEGIN CERTIFICATE----- line:
*
* Bag Attributes
* localKeyID: 01 00 00 00
* subject=/O=organization/OU=org unit/CN=common name
* issuer=/O=organization/CN=common name
*/
if (strlen($str) > ini_get('pcre.backtrack_limit')) {
$temp = $str;
} else {
$temp = preg_replace('#.*?^-+[^-]+-+[\r\n ]*$#ms', '', $str, 1);
$temp = preg_replace('#-+END.*[\r\n ]*.*#ms', '', $temp, 1);
}
// remove new lines
$temp = str_replace(array("\r", "\n", ' '), '', $temp);
// remove the -----BEGIN CERTIFICATE----- and -----END CERTIFICATE----- stuff
$temp = preg_replace('#^-+[^-]+-+|-+[^-]+-+$#', '', $temp);
$temp = preg_match('#^[a-zA-Z\d/+]*={0,2}$#', $temp) ? base64_decode($temp) : false;
return $temp != false ? $temp : $str;
}
/**
* Returns the OID corresponding to a name
*
* What's returned in the associative array returned by loadX509() (or load*()) is either a name or an OID if
* no OID to name mapping is available. The problem with this is that what may be an unmapped OID in one version
* of phpseclib may not be unmapped in the next version, so apps that are looking at this OID may not be able
* to work from version to version.
*
* This method will return the OID if a name is passed to it and if no mapping is avialable it'll assume that
* what's being passed to it already is an OID and return that instead. A few examples.
*
* getOID('2.16.840.1.101.3.4.2.1') == '2.16.840.1.101.3.4.2.1'
* getOID('id-sha256') == '2.16.840.1.101.3.4.2.1'
* getOID('zzz') == 'zzz'
*
* @access public
* @return string
*/
function getOID($name)
{
static $reverseMap;
if (!isset($reverseMap)) {
$reverseMap = array_flip($this->oids);
}
return isset($reverseMap[$name]) ? $reverseMap[$name] : $name;
}
}
PK ��$Z���f f ) phpseclib/phpseclib/File/ASN1/Element.phpnu �[��� <?php
/**
* Pure-PHP ASN.1 Parser
*
* PHP version 5
*
* @category File
* @package ASN1
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2012 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\File\ASN1;
/**
* ASN.1 Element
*
* Bypass normal encoding rules in phpseclib\File\ASN1::encodeDER()
*
* @package ASN1
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class Element
{
/**
* Raw element value
*
* @var string
* @access private
*/
var $element;
/**
* Constructor
*
* @param string $encoded
* @return \phpseclib\File\ASN1\Element
* @access public
*/
function __construct($encoded)
{
$this->element = $encoded;
}
}
PK ��$ZQ�`�d� d� ! phpseclib/phpseclib/File/ASN1.phpnu �[��� <?php
/**
* Pure-PHP ASN.1 Parser
*
* PHP version 5
*
* ASN.1 provides the semantics for data encoded using various schemes. The most commonly
* utilized scheme is DER or the "Distinguished Encoding Rules". PEM's are base64 encoded
* DER blobs.
*
* \phpseclib\File\ASN1 decodes and encodes DER formatted messages and places them in a semantic context.
*
* Uses the 1988 ASN.1 syntax.
*
* @category File
* @package ASN1
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2012 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\File;
use phpseclib\File\ASN1\Element;
use phpseclib\Math\BigInteger;
use DateTime;
use DateTimeZone;
/**
* Pure-PHP ASN.1 Parser
*
* @package ASN1
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class ASN1
{
/**#@+
* Tag Classes
*
* @access private
* @link http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf#page=12
*/
const CLASS_UNIVERSAL = 0;
const CLASS_APPLICATION = 1;
const CLASS_CONTEXT_SPECIFIC = 2;
const CLASS_PRIVATE = 3;
/**#@-*/
/**#@+
* Tag Classes
*
* @access private
* @link http://www.obj-sys.com/asn1tutorial/node124.html
*/
const TYPE_BOOLEAN = 1;
const TYPE_INTEGER = 2;
const TYPE_BIT_STRING = 3;
const TYPE_OCTET_STRING = 4;
const TYPE_NULL = 5;
const TYPE_OBJECT_IDENTIFIER = 6;
//const TYPE_OBJECT_DESCRIPTOR = 7;
//const TYPE_INSTANCE_OF = 8; // EXTERNAL
const TYPE_REAL = 9;
const TYPE_ENUMERATED = 10;
//const TYPE_EMBEDDED = 11;
const TYPE_UTF8_STRING = 12;
//const TYPE_RELATIVE_OID = 13;
const TYPE_SEQUENCE = 16; // SEQUENCE OF
const TYPE_SET = 17; // SET OF
/**#@-*/
/**#@+
* More Tag Classes
*
* @access private
* @link http://www.obj-sys.com/asn1tutorial/node10.html
*/
const TYPE_NUMERIC_STRING = 18;
const TYPE_PRINTABLE_STRING = 19;
const TYPE_TELETEX_STRING = 20; // T61String
const TYPE_VIDEOTEX_STRING = 21;
const TYPE_IA5_STRING = 22;
const TYPE_UTC_TIME = 23;
const TYPE_GENERALIZED_TIME = 24;
const TYPE_GRAPHIC_STRING = 25;
const TYPE_VISIBLE_STRING = 26; // ISO646String
const TYPE_GENERAL_STRING = 27;
const TYPE_UNIVERSAL_STRING = 28;
//const TYPE_CHARACTER_STRING = 29;
const TYPE_BMP_STRING = 30;
/**#@-*/
/**#@+
* Tag Aliases
*
* These tags are kinda place holders for other tags.
*
* @access private
*/
const TYPE_CHOICE = -1;
const TYPE_ANY = -2;
/**#@-*/
/**
* ASN.1 object identifier
*
* @var array
* @access private
* @link http://en.wikipedia.org/wiki/Object_identifier
*/
var $oids = array();
/**
* Default date format
*
* @var string
* @access private
* @link http://php.net/class.datetime
*/
var $format = 'D, d M Y H:i:s O';
/**
* Default date format
*
* @var array
* @access private
* @see self::setTimeFormat()
* @see self::asn1map()
* @link http://php.net/class.datetime
*/
var $encoded;
/**
* Filters
*
* If the mapping type is self::TYPE_ANY what do we actually encode it as?
*
* @var array
* @access private
* @see self::_encode_der()
*/
var $filters;
/**
* Type mapping table for the ANY type.
*
* Structured or unknown types are mapped to a \phpseclib\File\ASN1\Element.
* Unambiguous types get the direct mapping (int/real/bool).
* Others are mapped as a choice, with an extra indexing level.
*
* @var array
* @access public
*/
var $ANYmap = array(
self::TYPE_BOOLEAN => true,
self::TYPE_INTEGER => true,
self::TYPE_BIT_STRING => 'bitString',
self::TYPE_OCTET_STRING => 'octetString',
self::TYPE_NULL => 'null',
self::TYPE_OBJECT_IDENTIFIER => 'objectIdentifier',
self::TYPE_REAL => true,
self::TYPE_ENUMERATED => 'enumerated',
self::TYPE_UTF8_STRING => 'utf8String',
self::TYPE_NUMERIC_STRING => 'numericString',
self::TYPE_PRINTABLE_STRING => 'printableString',
self::TYPE_TELETEX_STRING => 'teletexString',
self::TYPE_VIDEOTEX_STRING => 'videotexString',
self::TYPE_IA5_STRING => 'ia5String',
self::TYPE_UTC_TIME => 'utcTime',
self::TYPE_GENERALIZED_TIME => 'generalTime',
self::TYPE_GRAPHIC_STRING => 'graphicString',
self::TYPE_VISIBLE_STRING => 'visibleString',
self::TYPE_GENERAL_STRING => 'generalString',
self::TYPE_UNIVERSAL_STRING => 'universalString',
//self::TYPE_CHARACTER_STRING => 'characterString',
self::TYPE_BMP_STRING => 'bmpString'
);
/**
* String type to character size mapping table.
*
* Non-convertable types are absent from this table.
* size == 0 indicates variable length encoding.
*
* @var array
* @access public
*/
var $stringTypeSize = array(
self::TYPE_UTF8_STRING => 0,
self::TYPE_BMP_STRING => 2,
self::TYPE_UNIVERSAL_STRING => 4,
self::TYPE_PRINTABLE_STRING => 1,
self::TYPE_TELETEX_STRING => 1,
self::TYPE_IA5_STRING => 1,
self::TYPE_VISIBLE_STRING => 1,
);
/**
* Parse BER-encoding
*
* Serves a similar purpose to openssl's asn1parse
*
* @param string $encoded
* @return array
* @access public
*/
function decodeBER($encoded)
{
if ($encoded instanceof Element) {
$encoded = $encoded->element;
}
$this->encoded = $encoded;
// encapsulate in an array for BC with the old decodeBER
return array($this->_decode_ber($encoded));
}
/**
* Parse BER-encoding (Helper function)
*
* Sometimes we want to get the BER encoding of a particular tag. $start lets us do that without having to reencode.
* $encoded is passed by reference for the recursive calls done for self::TYPE_BIT_STRING and
* self::TYPE_OCTET_STRING. In those cases, the indefinite length is used.
*
* @param string $encoded
* @param int $start
* @param int $encoded_pos
* @return array
* @access private
*/
function _decode_ber($encoded, $start = 0, $encoded_pos = 0)
{
$current = array('start' => $start);
if (!isset($encoded[$encoded_pos])) {
return false;
}
$type = ord($encoded[$encoded_pos++]);
$startOffset = 1;
$constructed = ($type >> 5) & 1;
$tag = $type & 0x1F;
if ($tag == 0x1F) {
$tag = 0;
// process septets (since the eighth bit is ignored, it's not an octet)
do {
if (!isset($encoded[$encoded_pos])) {
return false;
}
$temp = ord($encoded[$encoded_pos++]);
$startOffset++;
$loop = $temp >> 7;
$tag <<= 7;
$temp &= 0x7F;
// "bits 7 to 1 of the first subsequent octet shall not all be zero"
if ($startOffset == 2 && $temp == 0) {
return false;
}
$tag |= $temp;
} while ($loop);
}
$start+= $startOffset;
// Length, as discussed in paragraph 8.1.3 of X.690-0207.pdf#page=13
if (!isset($encoded[$encoded_pos])) {
return false;
}
$length = ord($encoded[$encoded_pos++]);
$start++;
if ($length == 0x80) { // indefinite length
// "[A sender shall] use the indefinite form (see 8.1.3.6) if the encoding is constructed and is not all
// immediately available." -- paragraph 8.1.3.2.c
$length = strlen($encoded) - $encoded_pos;
} elseif ($length & 0x80) { // definite length, long form
// technically, the long form of the length can be represented by up to 126 octets (bytes), but we'll only
// support it up to four.
$length&= 0x7F;
$temp = substr($encoded, $encoded_pos, $length);
$encoded_pos += $length;
// tags of indefinte length don't really have a header length; this length includes the tag
$current+= array('headerlength' => $length + 2);
$start+= $length;
extract(unpack('Nlength', substr(str_pad($temp, 4, chr(0), STR_PAD_LEFT), -4)));
} else {
$current+= array('headerlength' => 2);
}
if ($length > (strlen($encoded) - $encoded_pos)) {
return false;
}
$content = substr($encoded, $encoded_pos, $length);
$content_pos = 0;
// at this point $length can be overwritten. it's only accurate for definite length things as is
/* Class is UNIVERSAL, APPLICATION, PRIVATE, or CONTEXT-SPECIFIC. The UNIVERSAL class is restricted to the ASN.1
built-in types. It defines an application-independent data type that must be distinguishable from all other
data types. The other three classes are user defined. The APPLICATION class distinguishes data types that
have a wide, scattered use within a particular presentation context. PRIVATE distinguishes data types within
a particular organization or country. CONTEXT-SPECIFIC distinguishes members of a sequence or set, the
alternatives of a CHOICE, or universally tagged set members. Only the class number appears in braces for this
data type; the term CONTEXT-SPECIFIC does not appear.
-- http://www.obj-sys.com/asn1tutorial/node12.html */
$class = ($type >> 6) & 3;
switch ($class) {
case self::CLASS_APPLICATION:
case self::CLASS_PRIVATE:
case self::CLASS_CONTEXT_SPECIFIC:
if (!$constructed) {
return array(
'type' => $class,
'constant' => $tag,
'content' => $content,
'length' => $length + $start - $current['start']
);
}
$newcontent = array();
$remainingLength = $length;
while ($remainingLength > 0) {
$temp = $this->_decode_ber($content, $start, $content_pos);
if ($temp === false) {
break;
}
$length = $temp['length'];
// end-of-content octets - see paragraph 8.1.5
if (substr($content, $content_pos + $length, 2) == "\0\0") {
$length+= 2;
$start+= $length;
$newcontent[] = $temp;
break;
}
$start+= $length;
$remainingLength-= $length;
$newcontent[] = $temp;
$content_pos += $length;
}
return array(
'type' => $class,
'constant' => $tag,
// the array encapsulation is for BC with the old format
'content' => $newcontent,
// the only time when $content['headerlength'] isn't defined is when the length is indefinite.
// the absence of $content['headerlength'] is how we know if something is indefinite or not.
// technically, it could be defined to be 2 and then another indicator could be used but whatever.
'length' => $start - $current['start']
) + $current;
}
$current+= array('type' => $tag);
// decode UNIVERSAL tags
switch ($tag) {
case self::TYPE_BOOLEAN:
// "The contents octets shall consist of a single octet." -- paragraph 8.2.1
if ($constructed || strlen($content) != 1) {
return false;
}
$current['content'] = (bool) ord($content[$content_pos]);
break;
case self::TYPE_INTEGER:
case self::TYPE_ENUMERATED:
if ($constructed) {
return false;
}
$current['content'] = new BigInteger(substr($content, $content_pos), -256);
break;
case self::TYPE_REAL: // not currently supported
return false;
case self::TYPE_BIT_STRING:
// The initial octet shall encode, as an unsigned binary integer with bit 1 as the least significant bit,
// the number of unused bits in the final subsequent octet. The number shall be in the range zero to
// seven.
if (!$constructed) {
$current['content'] = substr($content, $content_pos);
} else {
$temp = $this->_decode_ber($content, $start, $content_pos);
if ($temp === false) {
return false;
}
$length-= (strlen($content) - $content_pos);
$last = count($temp) - 1;
for ($i = 0; $i < $last; $i++) {
// all subtags should be bit strings
if ($temp[$i]['type'] != self::TYPE_BIT_STRING) {
return false;
}
$current['content'].= substr($temp[$i]['content'], 1);
}
// all subtags should be bit strings
if ($temp[$last]['type'] != self::TYPE_BIT_STRING) {
return false;
}
$current['content'] = $temp[$last]['content'][0] . $current['content'] . substr($temp[$i]['content'], 1);
}
break;
case self::TYPE_OCTET_STRING:
if (!$constructed) {
$current['content'] = substr($content, $content_pos);
} else {
$current['content'] = '';
$length = 0;
while (substr($content, $content_pos, 2) != "\0\0") {
$temp = $this->_decode_ber($content, $length + $start, $content_pos);
if ($temp === false) {
return false;
}
$content_pos += $temp['length'];
// all subtags should be octet strings
if ($temp['type'] != self::TYPE_OCTET_STRING) {
return false;
}
$current['content'].= $temp['content'];
$length+= $temp['length'];
}
if (substr($content, $content_pos, 2) == "\0\0") {
$length+= 2; // +2 for the EOC
}
}
break;
case self::TYPE_NULL:
// "The contents octets shall not contain any octets." -- paragraph 8.8.2
if ($constructed || strlen($content)) {
return false;
}
break;
case self::TYPE_SEQUENCE:
case self::TYPE_SET:
if (!$constructed) {
return false;
}
$offset = 0;
$current['content'] = array();
$content_len = strlen($content);
while ($content_pos < $content_len) {
// if indefinite length construction was used and we have an end-of-content string next
// see paragraphs 8.1.1.3, 8.1.3.2, 8.1.3.6, 8.1.5, and (for an example) 8.6.4.2
if (!isset($current['headerlength']) && substr($content, $content_pos, 2) == "\0\0") {
$length = $offset + 2; // +2 for the EOC
break 2;
}
$temp = $this->_decode_ber($content, $start + $offset, $content_pos);
if ($temp === false) {
return false;
}
$content_pos += $temp['length'];
$current['content'][] = $temp;
$offset+= $temp['length'];
}
break;
case self::TYPE_OBJECT_IDENTIFIER:
if ($constructed) {
return false;
}
$current['content'] = $this->_decodeOID(substr($content, $content_pos));
if ($current['content'] === false) {
return false;
}
break;
/* Each character string type shall be encoded as if it had been declared:
[UNIVERSAL x] IMPLICIT OCTET STRING
-- X.690-0207.pdf#page=23 (paragraph 8.21.3)
Per that, we're not going to do any validation. If there are any illegal characters in the string,
we don't really care */
case self::TYPE_NUMERIC_STRING:
// 0,1,2,3,4,5,6,7,8,9, and space
case self::TYPE_PRINTABLE_STRING:
// Upper and lower case letters, digits, space, apostrophe, left/right parenthesis, plus sign, comma,
// hyphen, full stop, solidus, colon, equal sign, question mark
case self::TYPE_TELETEX_STRING:
// The Teletex character set in CCITT's T61, space, and delete
// see http://en.wikipedia.org/wiki/Teletex#Character_sets
case self::TYPE_VIDEOTEX_STRING:
// The Videotex character set in CCITT's T.100 and T.101, space, and delete
case self::TYPE_VISIBLE_STRING:
// Printing character sets of international ASCII, and space
case self::TYPE_IA5_STRING:
// International Alphabet 5 (International ASCII)
case self::TYPE_GRAPHIC_STRING:
// All registered G sets, and space
case self::TYPE_GENERAL_STRING:
// All registered C and G sets, space and delete
case self::TYPE_UTF8_STRING:
// ????
case self::TYPE_BMP_STRING:
if ($constructed) {
return false;
}
$current['content'] = substr($content, $content_pos);
break;
case self::TYPE_UTC_TIME:
case self::TYPE_GENERALIZED_TIME:
if ($constructed) {
return false;
}
$current['content'] = $this->_decodeTime(substr($content, $content_pos), $tag);
break;
default:
return false;
}
$start+= $length;
// ie. length is the length of the full TLV encoding - it's not just the length of the value
return $current + array('length' => $start - $current['start']);
}
/**
* ASN.1 Map
*
* Provides an ASN.1 semantic mapping ($mapping) from a parsed BER-encoding to a human readable format.
*
* "Special" mappings may be applied on a per tag-name basis via $special.
*
* @param array $decoded
* @param array $mapping
* @param array $special
* @return array
* @access public
*/
function asn1map($decoded, $mapping, $special = array())
{
if (!is_array($decoded)) {
return false;
}
if (isset($mapping['explicit']) && is_array($decoded['content'])) {
$decoded = $decoded['content'][0];
}
switch (true) {
case $mapping['type'] == self::TYPE_ANY:
$intype = $decoded['type'];
if (isset($decoded['constant']) || !isset($this->ANYmap[$intype]) || (ord($this->encoded[$decoded['start']]) & 0x20)) {
return new Element(substr($this->encoded, $decoded['start'], $decoded['length']));
}
$inmap = $this->ANYmap[$intype];
if (is_string($inmap)) {
return array($inmap => $this->asn1map($decoded, array('type' => $intype) + $mapping, $special));
}
break;
case $mapping['type'] == self::TYPE_CHOICE:
foreach ($mapping['children'] as $key => $option) {
switch (true) {
case isset($option['constant']) && $option['constant'] == $decoded['constant']:
case !isset($option['constant']) && $option['type'] == $decoded['type']:
$value = $this->asn1map($decoded, $option, $special);
break;
case !isset($option['constant']) && $option['type'] == self::TYPE_CHOICE:
$v = $this->asn1map($decoded, $option, $special);
if (isset($v)) {
$value = $v;
}
}
if (isset($value)) {
if (isset($special[$key])) {
$value = call_user_func($special[$key], $value);
}
return array($key => $value);
}
}
return null;
case isset($mapping['implicit']):
case isset($mapping['explicit']):
case $decoded['type'] == $mapping['type']:
break;
default:
// if $decoded['type'] and $mapping['type'] are both strings, but different types of strings,
// let it through
switch (true) {
case $decoded['type'] < 18: // self::TYPE_NUMERIC_STRING == 18
case $decoded['type'] > 30: // self::TYPE_BMP_STRING == 30
case $mapping['type'] < 18:
case $mapping['type'] > 30:
return null;
}
}
if (isset($mapping['implicit'])) {
$decoded['type'] = $mapping['type'];
}
switch ($decoded['type']) {
case self::TYPE_SEQUENCE:
$map = array();
// ignore the min and max
if (isset($mapping['min']) && isset($mapping['max'])) {
$child = $mapping['children'];
foreach ($decoded['content'] as $content) {
if (($map[] = $this->asn1map($content, $child, $special)) === null) {
return null;
}
}
return $map;
}
$n = count($decoded['content']);
$i = 0;
foreach ($mapping['children'] as $key => $child) {
$maymatch = $i < $n; // Match only existing input.
if ($maymatch) {
$temp = $decoded['content'][$i];
if ($child['type'] != self::TYPE_CHOICE) {
// Get the mapping and input class & constant.
$childClass = $tempClass = self::CLASS_UNIVERSAL;
$constant = null;
if (isset($temp['constant'])) {
$tempClass = $temp['type'];
}
if (isset($child['class'])) {
$childClass = $child['class'];
$constant = $child['cast'];
} elseif (isset($child['constant'])) {
$childClass = self::CLASS_CONTEXT_SPECIFIC;
$constant = $child['constant'];
}
if (isset($constant) && isset($temp['constant'])) {
// Can only match if constants and class match.
$maymatch = $constant == $temp['constant'] && $childClass == $tempClass;
} else {
// Can only match if no constant expected and type matches or is generic.
$maymatch = !isset($child['constant']) && array_search($child['type'], array($temp['type'], self::TYPE_ANY, self::TYPE_CHOICE)) !== false;
}
}
}
if ($maymatch) {
// Attempt submapping.
$candidate = $this->asn1map($temp, $child, $special);
$maymatch = $candidate !== null;
}
if ($maymatch) {
// Got the match: use it.
if (isset($special[$key])) {
$candidate = call_user_func($special[$key], $candidate);
}
$map[$key] = $candidate;
$i++;
} elseif (isset($child['default'])) {
$map[$key] = $child['default']; // Use default.
} elseif (!isset($child['optional'])) {
return null; // Syntax error.
}
}
// Fail mapping if all input items have not been consumed.
return $i < $n ? null: $map;
// the main diff between sets and sequences is the encapsulation of the foreach in another for loop
case self::TYPE_SET:
$map = array();
// ignore the min and max
if (isset($mapping['min']) && isset($mapping['max'])) {
$child = $mapping['children'];
foreach ($decoded['content'] as $content) {
if (($map[] = $this->asn1map($content, $child, $special)) === null) {
return null;
}
}
return $map;
}
for ($i = 0; $i < count($decoded['content']); $i++) {
$temp = $decoded['content'][$i];
$tempClass = self::CLASS_UNIVERSAL;
if (isset($temp['constant'])) {
$tempClass = $temp['type'];
}
foreach ($mapping['children'] as $key => $child) {
if (isset($map[$key])) {
continue;
}
$maymatch = true;
if ($child['type'] != self::TYPE_CHOICE) {
$childClass = self::CLASS_UNIVERSAL;
$constant = null;
if (isset($child['class'])) {
$childClass = $child['class'];
$constant = $child['cast'];
} elseif (isset($child['constant'])) {
$childClass = self::CLASS_CONTEXT_SPECIFIC;
$constant = $child['constant'];
}
if (isset($constant) && isset($temp['constant'])) {
// Can only match if constants and class match.
$maymatch = $constant == $temp['constant'] && $childClass == $tempClass;
} else {
// Can only match if no constant expected and type matches or is generic.
$maymatch = !isset($child['constant']) && array_search($child['type'], array($temp['type'], self::TYPE_ANY, self::TYPE_CHOICE)) !== false;
}
}
if ($maymatch) {
// Attempt submapping.
$candidate = $this->asn1map($temp, $child, $special);
$maymatch = $candidate !== null;
}
if (!$maymatch) {
break;
}
// Got the match: use it.
if (isset($special[$key])) {
$candidate = call_user_func($special[$key], $candidate);
}
$map[$key] = $candidate;
break;
}
}
foreach ($mapping['children'] as $key => $child) {
if (!isset($map[$key])) {
if (isset($child['default'])) {
$map[$key] = $child['default'];
} elseif (!isset($child['optional'])) {
return null;
}
}
}
return $map;
case self::TYPE_OBJECT_IDENTIFIER:
return isset($this->oids[$decoded['content']]) ? $this->oids[$decoded['content']] : $decoded['content'];
case self::TYPE_UTC_TIME:
case self::TYPE_GENERALIZED_TIME:
// for explicitly tagged optional stuff
if (is_array($decoded['content'])) {
$decoded['content'] = $decoded['content'][0]['content'];
}
// for implicitly tagged optional stuff
// in theory, doing isset($mapping['implicit']) would work but malformed certs do exist
// in the wild that OpenSSL decodes without issue so we'll support them as well
if (!is_object($decoded['content'])) {
$decoded['content'] = $this->_decodeTime($decoded['content'], $decoded['type']);
}
return $decoded['content'] ? $decoded['content']->format($this->format) : false;
case self::TYPE_BIT_STRING:
if (isset($mapping['mapping'])) {
$offset = ord($decoded['content'][0]);
$size = (strlen($decoded['content']) - 1) * 8 - $offset;
/*
From X.680-0207.pdf#page=46 (21.7):
"When a "NamedBitList" is used in defining a bitstring type ASN.1 encoding rules are free to add (or remove)
arbitrarily any trailing 0 bits to (or from) values that are being encoded or decoded. Application designers should
therefore ensure that different semantics are not associated with such values which differ only in the number of trailing
0 bits."
*/
$bits = count($mapping['mapping']) == $size ? array() : array_fill(0, count($mapping['mapping']) - $size, false);
for ($i = strlen($decoded['content']) - 1; $i > 0; $i--) {
$current = ord($decoded['content'][$i]);
for ($j = $offset; $j < 8; $j++) {
$bits[] = (bool) ($current & (1 << $j));
}
$offset = 0;
}
$values = array();
$map = array_reverse($mapping['mapping']);
foreach ($map as $i => $value) {
if ($bits[$i]) {
$values[] = $value;
}
}
return $values;
}
case self::TYPE_OCTET_STRING:
return base64_encode($decoded['content']);
case self::TYPE_NULL:
return '';
case self::TYPE_BOOLEAN:
return $decoded['content'];
case self::TYPE_NUMERIC_STRING:
case self::TYPE_PRINTABLE_STRING:
case self::TYPE_TELETEX_STRING:
case self::TYPE_VIDEOTEX_STRING:
case self::TYPE_IA5_STRING:
case self::TYPE_GRAPHIC_STRING:
case self::TYPE_VISIBLE_STRING:
case self::TYPE_GENERAL_STRING:
case self::TYPE_UNIVERSAL_STRING:
case self::TYPE_UTF8_STRING:
case self::TYPE_BMP_STRING:
return $decoded['content'];
case self::TYPE_INTEGER:
case self::TYPE_ENUMERATED:
$temp = $decoded['content'];
if (isset($mapping['implicit'])) {
$temp = new BigInteger($decoded['content'], -256);
}
if (isset($mapping['mapping'])) {
$temp = (int) $temp->toString();
return isset($mapping['mapping'][$temp]) ?
$mapping['mapping'][$temp] :
false;
}
return $temp;
}
}
/**
* ASN.1 Encode
*
* DER-encodes an ASN.1 semantic mapping ($mapping). Some libraries would probably call this function
* an ASN.1 compiler.
*
* "Special" mappings can be applied via $special.
*
* @param string $source
* @param string $mapping
* @param array $special
* @return string
* @access public
*/
function encodeDER($source, $mapping, $special = array())
{
$this->location = array();
return $this->_encode_der($source, $mapping, null, $special);
}
/**
* ASN.1 Encode (Helper function)
*
* @param string $source
* @param string $mapping
* @param int $idx
* @param array $special
* @return string
* @access private
*/
function _encode_der($source, $mapping, $idx = null, $special = array())
{
if ($source instanceof Element) {
return $source->element;
}
// do not encode (implicitly optional) fields with value set to default
if (isset($mapping['default']) && $source === $mapping['default']) {
return '';
}
if (isset($idx)) {
if (isset($special[$idx])) {
$source = call_user_func($special[$idx], $source);
}
$this->location[] = $idx;
}
$tag = $mapping['type'];
switch ($tag) {
case self::TYPE_SET: // Children order is not important, thus process in sequence.
case self::TYPE_SEQUENCE:
$tag|= 0x20; // set the constructed bit
// ignore the min and max
if (isset($mapping['min']) && isset($mapping['max'])) {
$value = array();
$child = $mapping['children'];
foreach ($source as $content) {
$temp = $this->_encode_der($content, $child, null, $special);
if ($temp === false) {
return false;
}
$value[]= $temp;
}
/* "The encodings of the component values of a set-of value shall appear in ascending order, the encodings being compared
as octet strings with the shorter components being padded at their trailing end with 0-octets.
NOTE - The padding octets are for comparison purposes only and do not appear in the encodings."
-- sec 11.6 of http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf */
if ($mapping['type'] == self::TYPE_SET) {
sort($value);
}
$value = implode('', $value);
break;
}
$value = '';
foreach ($mapping['children'] as $key => $child) {
if (!array_key_exists($key, $source)) {
if (!isset($child['optional'])) {
return false;
}
continue;
}
$temp = $this->_encode_der($source[$key], $child, $key, $special);
if ($temp === false) {
return false;
}
// An empty child encoding means it has been optimized out.
// Else we should have at least one tag byte.
if ($temp === '') {
continue;
}
// if isset($child['constant']) is true then isset($child['optional']) should be true as well
if (isset($child['constant'])) {
/*
From X.680-0207.pdf#page=58 (30.6):
"The tagging construction specifies explicit tagging if any of the following holds:
...
c) the "Tag Type" alternative is used and the value of "TagDefault" for the module is IMPLICIT TAGS or
AUTOMATIC TAGS, but the type defined by "Type" is an untagged choice type, an untagged open type, or
an untagged "DummyReference" (see ITU-T Rec. X.683 | ISO/IEC 8824-4, 8.3)."
*/
if (isset($child['explicit']) || $child['type'] == self::TYPE_CHOICE) {
$subtag = chr((self::CLASS_CONTEXT_SPECIFIC << 6) | 0x20 | $child['constant']);
$temp = $subtag . $this->_encodeLength(strlen($temp)) . $temp;
} else {
$subtag = chr((self::CLASS_CONTEXT_SPECIFIC << 6) | (ord($temp[0]) & 0x20) | $child['constant']);
$temp = $subtag . substr($temp, 1);
}
}
$value.= $temp;
}
break;
case self::TYPE_CHOICE:
$temp = false;
foreach ($mapping['children'] as $key => $child) {
if (!isset($source[$key])) {
continue;
}
$temp = $this->_encode_der($source[$key], $child, $key, $special);
if ($temp === false) {
return false;
}
// An empty child encoding means it has been optimized out.
// Else we should have at least one tag byte.
if ($temp === '') {
continue;
}
$tag = ord($temp[0]);
// if isset($child['constant']) is true then isset($child['optional']) should be true as well
if (isset($child['constant'])) {
if (isset($child['explicit']) || $child['type'] == self::TYPE_CHOICE) {
$subtag = chr((self::CLASS_CONTEXT_SPECIFIC << 6) | 0x20 | $child['constant']);
$temp = $subtag . $this->_encodeLength(strlen($temp)) . $temp;
} else {
$subtag = chr((self::CLASS_CONTEXT_SPECIFIC << 6) | (ord($temp[0]) & 0x20) | $child['constant']);
$temp = $subtag . substr($temp, 1);
}
}
}
if (isset($idx)) {
array_pop($this->location);
}
if ($temp && isset($mapping['cast'])) {
$temp[0] = chr(($mapping['class'] << 6) | ($tag & 0x20) | $mapping['cast']);
}
return $temp;
case self::TYPE_INTEGER:
case self::TYPE_ENUMERATED:
if (!isset($mapping['mapping'])) {
if (is_numeric($source)) {
$source = new BigInteger($source);
}
$value = $source->toBytes(true);
} else {
$value = array_search($source, $mapping['mapping']);
if ($value === false) {
return false;
}
$value = new BigInteger($value);
$value = $value->toBytes(true);
}
if (!strlen($value)) {
$value = chr(0);
}
break;
case self::TYPE_UTC_TIME:
case self::TYPE_GENERALIZED_TIME:
$format = $mapping['type'] == self::TYPE_UTC_TIME ? 'y' : 'Y';
$format.= 'mdHis';
// if $source does _not_ include timezone information within it then assume that the timezone is GMT
$date = new DateTime($source, new DateTimeZone('GMT'));
// if $source _does_ include timezone information within it then convert the time to GMT
$date->setTimezone(new DateTimeZone('GMT'));
$value = $date->format($format) . 'Z';
break;
case self::TYPE_BIT_STRING:
if (isset($mapping['mapping'])) {
$bits = array_fill(0, count($mapping['mapping']), 0);
$size = 0;
for ($i = 0; $i < count($mapping['mapping']); $i++) {
if (in_array($mapping['mapping'][$i], $source)) {
$bits[$i] = 1;
$size = $i;
}
}
if (isset($mapping['min']) && $mapping['min'] >= 1 && $size < $mapping['min']) {
$size = $mapping['min'] - 1;
}
$offset = 8 - (($size + 1) & 7);
$offset = $offset !== 8 ? $offset : 0;
$value = chr($offset);
for ($i = $size + 1; $i < count($mapping['mapping']); $i++) {
unset($bits[$i]);
}
$bits = implode('', array_pad($bits, $size + $offset + 1, 0));
$bytes = explode(' ', rtrim(chunk_split($bits, 8, ' ')));
foreach ($bytes as $byte) {
$value.= chr(bindec($byte));
}
break;
}
case self::TYPE_OCTET_STRING:
/* The initial octet shall encode, as an unsigned binary integer with bit 1 as the least significant bit,
the number of unused bits in the final subsequent octet. The number shall be in the range zero to seven.
-- http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf#page=16 */
$value = base64_decode($source);
break;
case self::TYPE_OBJECT_IDENTIFIER:
$value = $this->_encodeOID($source);
break;
case self::TYPE_ANY:
$loc = $this->location;
if (isset($idx)) {
array_pop($this->location);
}
switch (true) {
case !isset($source):
return $this->_encode_der(null, array('type' => self::TYPE_NULL) + $mapping, null, $special);
case is_int($source):
case $source instanceof BigInteger:
return $this->_encode_der($source, array('type' => self::TYPE_INTEGER) + $mapping, null, $special);
case is_float($source):
return $this->_encode_der($source, array('type' => self::TYPE_REAL) + $mapping, null, $special);
case is_bool($source):
return $this->_encode_der($source, array('type' => self::TYPE_BOOLEAN) + $mapping, null, $special);
case is_array($source) && count($source) == 1:
$typename = implode('', array_keys($source));
$outtype = array_search($typename, $this->ANYmap, true);
if ($outtype !== false) {
return $this->_encode_der($source[$typename], array('type' => $outtype) + $mapping, null, $special);
}
}
$filters = $this->filters;
foreach ($loc as $part) {
if (!isset($filters[$part])) {
$filters = false;
break;
}
$filters = $filters[$part];
}
if ($filters === false) {
user_error('No filters defined for ' . implode('/', $loc));
return false;
}
return $this->_encode_der($source, $filters + $mapping, null, $special);
case self::TYPE_NULL:
$value = '';
break;
case self::TYPE_NUMERIC_STRING:
case self::TYPE_TELETEX_STRING:
case self::TYPE_PRINTABLE_STRING:
case self::TYPE_UNIVERSAL_STRING:
case self::TYPE_UTF8_STRING:
case self::TYPE_BMP_STRING:
case self::TYPE_IA5_STRING:
case self::TYPE_VISIBLE_STRING:
case self::TYPE_VIDEOTEX_STRING:
case self::TYPE_GRAPHIC_STRING:
case self::TYPE_GENERAL_STRING:
$value = $source;
break;
case self::TYPE_BOOLEAN:
$value = $source ? "\xFF" : "\x00";
break;
default:
user_error('Mapping provides no type definition for ' . implode('/', $this->location));
return false;
}
if (isset($idx)) {
array_pop($this->location);
}
if (isset($mapping['cast'])) {
if (isset($mapping['explicit']) || $mapping['type'] == self::TYPE_CHOICE) {
$value = chr($tag) . $this->_encodeLength(strlen($value)) . $value;
$tag = ($mapping['class'] << 6) | 0x20 | $mapping['cast'];
} else {
$tag = ($mapping['class'] << 6) | (ord($temp[0]) & 0x20) | $mapping['cast'];
}
}
return chr($tag) . $this->_encodeLength(strlen($value)) . $value;
}
/**
* DER-encode the length
*
* DER supports lengths up to (2**8)**127, however, we'll only support lengths up to (2**8)**4. See
* {@link http://itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf#p=13 X.690 paragraph 8.1.3} for more information.
*
* @access private
* @param int $length
* @return string
*/
function _encodeLength($length)
{
if ($length <= 0x7F) {
return chr($length);
}
$temp = ltrim(pack('N', $length), chr(0));
return pack('Ca*', 0x80 | strlen($temp), $temp);
}
/**
* BER-decode the OID
*
* Called by _decode_ber()
*
* @access private
* @param string $content
* @return string
*/
function _decodeOID($content)
{
static $eighty;
if (!$eighty) {
$eighty = new BigInteger(80);
}
$oid = array();
$pos = 0;
$len = strlen($content);
if (ord($content[$len - 1]) & 0x80) {
return false;
}
$n = new BigInteger();
while ($pos < $len) {
$temp = ord($content[$pos++]);
$n = $n->bitwise_leftShift(7);
$n = $n->bitwise_or(new BigInteger($temp & 0x7F));
if (~$temp & 0x80) {
$oid[] = $n;
$n = new BigInteger();
}
}
$part1 = array_shift($oid);
$first = floor(ord($content[0]) / 40);
/*
"This packing of the first two object identifier components recognizes that only three values are allocated from the root
node, and at most 39 subsequent values from nodes reached by X = 0 and X = 1."
-- https://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf#page=22
*/
if ($first <= 2) { // ie. 0 <= ord($content[0]) < 120 (0x78)
array_unshift($oid, ord($content[0]) % 40);
array_unshift($oid, $first);
} else {
array_unshift($oid, $part1->subtract($eighty));
array_unshift($oid, 2);
}
return implode('.', $oid);
}
/**
* DER-encode the OID
*
* Called by _encode_der()
*
* @access private
* @param string $source
* @return string
*/
function _encodeOID($source)
{
static $mask, $zero, $forty;
if (!$mask) {
$mask = new BigInteger(0x7F);
$zero = new BigInteger();
$forty = new BigInteger(40);
}
$oid = preg_match('#(?:\d+\.)+#', $source) ? $source : array_search($source, $this->oids);
if ($oid === false) {
user_error('Invalid OID');
return false;
}
$parts = explode('.', $oid);
$part1 = array_shift($parts);
$part2 = array_shift($parts);
$first = new BigInteger($part1);
$first = $first->multiply($forty);
$first = $first->add(new BigInteger($part2));
array_unshift($parts, $first->toString());
$value = '';
foreach ($parts as $part) {
if (!$part) {
$temp = "\0";
} else {
$temp = '';
$part = new BigInteger($part);
while (!$part->equals($zero)) {
$submask = $part->bitwise_and($mask);
$submask->setPrecision(8);
$temp = (chr(0x80) | $submask->toBytes()) . $temp;
$part = $part->bitwise_rightShift(7);
}
$temp[strlen($temp) - 1] = $temp[strlen($temp) - 1] & chr(0x7F);
}
$value.= $temp;
}
return $value;
}
/**
* BER-decode the time
*
* Called by _decode_ber() and in the case of implicit tags asn1map().
*
* @access private
* @param string $content
* @param int $tag
* @return string
*/
function _decodeTime($content, $tag)
{
/* UTCTime:
http://tools.ietf.org/html/rfc5280#section-4.1.2.5.1
http://www.obj-sys.com/asn1tutorial/node15.html
GeneralizedTime:
http://tools.ietf.org/html/rfc5280#section-4.1.2.5.2
http://www.obj-sys.com/asn1tutorial/node14.html */
$format = 'YmdHis';
if ($tag == self::TYPE_UTC_TIME) {
// https://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf#page=28 says "the seconds
// element shall always be present" but none-the-less I've seen X509 certs where it isn't and if the
// browsers parse it phpseclib ought to too
if (preg_match('#^(\d{10})(Z|[+-]\d{4})$#', $content, $matches)) {
$content = $matches[1] . '00' . $matches[2];
}
$prefix = substr($content, 0, 2) >= 50 ? '19' : '20';
$content = $prefix . $content;
} elseif (strpos($content, '.') !== false) {
$format.= '.u';
}
if ($content[strlen($content) - 1] == 'Z') {
$content = substr($content, 0, -1) . '+0000';
}
if (strpos($content, '-') !== false || strpos($content, '+') !== false) {
$format.= 'O';
}
// error supression isn't necessary as of PHP 7.0:
// http://php.net/manual/en/migration70.other-changes.php
return @DateTime::createFromFormat($format, $content);
}
/**
* Set the time format
*
* Sets the time / date format for asn1map().
*
* @access public
* @param string $format
*/
function setTimeFormat($format)
{
$this->format = $format;
}
/**
* Load OIDs
*
* Load the relevant OIDs for a particular ASN.1 semantic mapping.
*
* @access public
* @param array $oids
*/
function loadOIDs($oids)
{
$this->oids = $oids;
}
/**
* Load filters
*
* See \phpseclib\File\X509, etc, for an example.
*
* @access public
* @param array $filters
*/
function loadFilters($filters)
{
$this->filters = $filters;
}
/**
* String Shift
*
* Inspired by array_shift
*
* @param string $string
* @param int $index
* @return string
* @access private
*/
function _string_shift(&$string, $index = 1)
{
$substr = substr($string, 0, $index);
$string = substr($string, $index);
return $substr;
}
/**
* String type conversion
*
* This is a lazy conversion, dealing only with character size.
* No real conversion table is used.
*
* @param string $in
* @param int $from
* @param int $to
* @return string
* @access public
*/
function convert($in, $from = self::TYPE_UTF8_STRING, $to = self::TYPE_UTF8_STRING)
{
if (!isset($this->stringTypeSize[$from]) || !isset($this->stringTypeSize[$to])) {
return false;
}
$insize = $this->stringTypeSize[$from];
$outsize = $this->stringTypeSize[$to];
$inlength = strlen($in);
$out = '';
for ($i = 0; $i < $inlength;) {
if ($inlength - $i < $insize) {
return false;
}
// Get an input character as a 32-bit value.
$c = ord($in[$i++]);
switch (true) {
case $insize == 4:
$c = ($c << 8) | ord($in[$i++]);
$c = ($c << 8) | ord($in[$i++]);
case $insize == 2:
$c = ($c << 8) | ord($in[$i++]);
case $insize == 1:
break;
case ($c & 0x80) == 0x00:
break;
case ($c & 0x40) == 0x00:
return false;
default:
$bit = 6;
do {
if ($bit > 25 || $i >= $inlength || (ord($in[$i]) & 0xC0) != 0x80) {
return false;
}
$c = ($c << 6) | (ord($in[$i++]) & 0x3F);
$bit += 5;
$mask = 1 << $bit;
} while ($c & $bit);
$c &= $mask - 1;
break;
}
// Convert and append the character to output string.
$v = '';
switch (true) {
case $outsize == 4:
$v .= chr($c & 0xFF);
$c >>= 8;
$v .= chr($c & 0xFF);
$c >>= 8;
case $outsize == 2:
$v .= chr($c & 0xFF);
$c >>= 8;
case $outsize == 1:
$v .= chr($c & 0xFF);
$c >>= 8;
if ($c) {
return false;
}
break;
case ($c & 0x80000000) != 0:
return false;
case $c >= 0x04000000:
$v .= chr(0x80 | ($c & 0x3F));
$c = ($c >> 6) | 0x04000000;
case $c >= 0x00200000:
$v .= chr(0x80 | ($c & 0x3F));
$c = ($c >> 6) | 0x00200000;
case $c >= 0x00010000:
$v .= chr(0x80 | ($c & 0x3F));
$c = ($c >> 6) | 0x00010000;
case $c >= 0x00000800:
$v .= chr(0x80 | ($c & 0x3F));
$c = ($c >> 6) | 0x00000800;
case $c >= 0x00000080:
$v .= chr(0x80 | ($c & 0x3F));
$c = ($c >> 6) | 0x000000C0;
default:
$v .= chr($c);
break;
}
$out .= strrev($v);
}
return $out;
}
}
PK ��$Z�1�xO xO ! phpseclib/phpseclib/File/ANSI.phpnu �[��� <?php
/**
* Pure-PHP ANSI Decoder
*
* PHP version 5
*
* If you call read() in \phpseclib\Net\SSH2 you may get {@link http://en.wikipedia.org/wiki/ANSI_escape_code ANSI escape codes} back.
* They'd look like chr(0x1B) . '[00m' or whatever (0x1B = ESC). They tell a
* {@link http://en.wikipedia.org/wiki/Terminal_emulator terminal emulator} how to format the characters, what
* color to display them in, etc. \phpseclib\File\ANSI is a {@link http://en.wikipedia.org/wiki/VT100 VT100} terminal emulator.
*
* @category File
* @package ANSI
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2012 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\File;
/**
* Pure-PHP ANSI Decoder
*
* @package ANSI
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class ANSI
{
/**
* Max Width
*
* @var int
* @access private
*/
var $max_x;
/**
* Max Height
*
* @var int
* @access private
*/
var $max_y;
/**
* Max History
*
* @var int
* @access private
*/
var $max_history;
/**
* History
*
* @var array
* @access private
*/
var $history;
/**
* History Attributes
*
* @var array
* @access private
*/
var $history_attrs;
/**
* Current Column
*
* @var int
* @access private
*/
var $x;
/**
* Current Row
*
* @var int
* @access private
*/
var $y;
/**
* Old Column
*
* @var int
* @access private
*/
var $old_x;
/**
* Old Row
*
* @var int
* @access private
*/
var $old_y;
/**
* An empty attribute cell
*
* @var object
* @access private
*/
var $base_attr_cell;
/**
* The current attribute cell
*
* @var object
* @access private
*/
var $attr_cell;
/**
* An empty attribute row
*
* @var array
* @access private
*/
var $attr_row;
/**
* The current screen text
*
* @var array
* @access private
*/
var $screen;
/**
* The current screen attributes
*
* @var array
* @access private
*/
var $attrs;
/**
* Current ANSI code
*
* @var string
* @access private
*/
var $ansi;
/**
* Tokenization
*
* @var array
* @access private
*/
var $tokenization;
/**
* Default Constructor.
*
* @return \phpseclib\File\ANSI
* @access public
*/
function __construct()
{
$attr_cell = new \stdClass();
$attr_cell->bold = false;
$attr_cell->underline = false;
$attr_cell->blink = false;
$attr_cell->background = 'black';
$attr_cell->foreground = 'white';
$attr_cell->reverse = false;
$this->base_attr_cell = clone $attr_cell;
$this->attr_cell = clone $attr_cell;
$this->setHistory(200);
$this->setDimensions(80, 24);
}
/**
* Set terminal width and height
*
* Resets the screen as well
*
* @param int $x
* @param int $y
* @access public
*/
function setDimensions($x, $y)
{
$this->max_x = $x - 1;
$this->max_y = $y - 1;
$this->x = $this->y = 0;
$this->history = $this->history_attrs = array();
$this->attr_row = array_fill(0, $this->max_x + 2, $this->base_attr_cell);
$this->screen = array_fill(0, $this->max_y + 1, '');
$this->attrs = array_fill(0, $this->max_y + 1, $this->attr_row);
$this->ansi = '';
}
/**
* Set the number of lines that should be logged past the terminal height
*
* @param int $history
* @access public
*/
function setHistory($history)
{
$this->max_history = $history;
}
/**
* Load a string
*
* @param string $source
* @access public
*/
function loadString($source)
{
$this->setDimensions($this->max_x + 1, $this->max_y + 1);
$this->appendString($source);
}
/**
* Appdend a string
*
* @param string $source
* @access public
*/
function appendString($source)
{
$this->tokenization = array('');
for ($i = 0; $i < strlen($source); $i++) {
if (strlen($this->ansi)) {
$this->ansi.= $source[$i];
$chr = ord($source[$i]);
// http://en.wikipedia.org/wiki/ANSI_escape_code#Sequence_elements
// single character CSI's not currently supported
switch (true) {
case $this->ansi == "\x1B=":
$this->ansi = '';
continue 2;
case strlen($this->ansi) == 2 && $chr >= 64 && $chr <= 95 && $chr != ord('['):
case strlen($this->ansi) > 2 && $chr >= 64 && $chr <= 126:
break;
default:
continue 2;
}
$this->tokenization[] = $this->ansi;
$this->tokenization[] = '';
// http://ascii-table.com/ansi-escape-sequences-vt-100.php
switch ($this->ansi) {
case "\x1B[H": // Move cursor to upper left corner
$this->old_x = $this->x;
$this->old_y = $this->y;
$this->x = $this->y = 0;
break;
case "\x1B[J": // Clear screen from cursor down
$this->history = array_merge($this->history, array_slice(array_splice($this->screen, $this->y + 1), 0, $this->old_y));
$this->screen = array_merge($this->screen, array_fill($this->y, $this->max_y, ''));
$this->history_attrs = array_merge($this->history_attrs, array_slice(array_splice($this->attrs, $this->y + 1), 0, $this->old_y));
$this->attrs = array_merge($this->attrs, array_fill($this->y, $this->max_y, $this->attr_row));
if (count($this->history) == $this->max_history) {
array_shift($this->history);
array_shift($this->history_attrs);
}
case "\x1B[K": // Clear screen from cursor right
$this->screen[$this->y] = substr($this->screen[$this->y], 0, $this->x);
array_splice($this->attrs[$this->y], $this->x + 1, $this->max_x - $this->x, array_fill($this->x, $this->max_x - ($this->x - 1), $this->base_attr_cell));
break;
case "\x1B[2K": // Clear entire line
$this->screen[$this->y] = str_repeat(' ', $this->x);
$this->attrs[$this->y] = $this->attr_row;
break;
case "\x1B[?1h": // set cursor key to application
case "\x1B[?25h": // show the cursor
case "\x1B(B": // set united states g0 character set
break;
case "\x1BE": // Move to next line
$this->_newLine();
$this->x = 0;
break;
default:
switch (true) {
case preg_match('#\x1B\[(\d+)B#', $this->ansi, $match): // Move cursor down n lines
$this->old_y = $this->y;
$this->y+= $match[1];
break;
case preg_match('#\x1B\[(\d+);(\d+)H#', $this->ansi, $match): // Move cursor to screen location v,h
$this->old_x = $this->x;
$this->old_y = $this->y;
$this->x = $match[2] - 1;
$this->y = $match[1] - 1;
break;
case preg_match('#\x1B\[(\d+)C#', $this->ansi, $match): // Move cursor right n lines
$this->old_x = $this->x;
$this->x+= $match[1];
break;
case preg_match('#\x1B\[(\d+)D#', $this->ansi, $match): // Move cursor left n lines
$this->old_x = $this->x;
$this->x-= $match[1];
if ($this->x < 0) {
$this->x = 0;
}
break;
case preg_match('#\x1B\[(\d+);(\d+)r#', $this->ansi, $match): // Set top and bottom lines of a window
break;
case preg_match('#\x1B\[(\d*(?:;\d*)*)m#', $this->ansi, $match): // character attributes
$attr_cell = &$this->attr_cell;
$mods = explode(';', $match[1]);
foreach ($mods as $mod) {
switch ($mod) {
case '':
case '0': // Turn off character attributes
$attr_cell = clone $this->base_attr_cell;
break;
case '1': // Turn bold mode on
$attr_cell->bold = true;
break;
case '4': // Turn underline mode on
$attr_cell->underline = true;
break;
case '5': // Turn blinking mode on
$attr_cell->blink = true;
break;
case '7': // Turn reverse video on
$attr_cell->reverse = !$attr_cell->reverse;
$temp = $attr_cell->background;
$attr_cell->background = $attr_cell->foreground;
$attr_cell->foreground = $temp;
break;
default: // set colors
//$front = $attr_cell->reverse ? &$attr_cell->background : &$attr_cell->foreground;
$front = &$attr_cell->{ $attr_cell->reverse ? 'background' : 'foreground' };
//$back = $attr_cell->reverse ? &$attr_cell->foreground : &$attr_cell->background;
$back = &$attr_cell->{ $attr_cell->reverse ? 'foreground' : 'background' };
switch ($mod) {
// @codingStandardsIgnoreStart
case '30': $front = 'black'; break;
case '31': $front = 'red'; break;
case '32': $front = 'green'; break;
case '33': $front = 'yellow'; break;
case '34': $front = 'blue'; break;
case '35': $front = 'magenta'; break;
case '36': $front = 'cyan'; break;
case '37': $front = 'white'; break;
case '40': $back = 'black'; break;
case '41': $back = 'red'; break;
case '42': $back = 'green'; break;
case '43': $back = 'yellow'; break;
case '44': $back = 'blue'; break;
case '45': $back = 'magenta'; break;
case '46': $back = 'cyan'; break;
case '47': $back = 'white'; break;
// @codingStandardsIgnoreEnd
default:
//user_error('Unsupported attribute: ' . $mod);
$this->ansi = '';
break 2;
}
}
}
break;
default:
//user_error("{$this->ansi} is unsupported\r\n");
}
}
$this->ansi = '';
continue;
}
$this->tokenization[count($this->tokenization) - 1].= $source[$i];
switch ($source[$i]) {
case "\r":
$this->x = 0;
break;
case "\n":
$this->_newLine();
break;
case "\x08": // backspace
if ($this->x) {
$this->x--;
$this->attrs[$this->y][$this->x] = clone $this->base_attr_cell;
$this->screen[$this->y] = substr_replace(
$this->screen[$this->y],
$source[$i],
$this->x,
1
);
}
break;
case "\x0F": // shift
break;
case "\x1B": // start ANSI escape code
$this->tokenization[count($this->tokenization) - 1] = substr($this->tokenization[count($this->tokenization) - 1], 0, -1);
//if (!strlen($this->tokenization[count($this->tokenization) - 1])) {
// array_pop($this->tokenization);
//}
$this->ansi.= "\x1B";
break;
default:
$this->attrs[$this->y][$this->x] = clone $this->attr_cell;
if ($this->x > strlen($this->screen[$this->y])) {
$this->screen[$this->y] = str_repeat(' ', $this->x);
}
$this->screen[$this->y] = substr_replace(
$this->screen[$this->y],
$source[$i],
$this->x,
1
);
if ($this->x > $this->max_x) {
$this->x = 0;
$this->_newLine();
} else {
$this->x++;
}
}
}
}
/**
* Add a new line
*
* Also update the $this->screen and $this->history buffers
*
* @access private
*/
function _newLine()
{
//if ($this->y < $this->max_y) {
// $this->y++;
//}
while ($this->y >= $this->max_y) {
$this->history = array_merge($this->history, array(array_shift($this->screen)));
$this->screen[] = '';
$this->history_attrs = array_merge($this->history_attrs, array(array_shift($this->attrs)));
$this->attrs[] = $this->attr_row;
if (count($this->history) >= $this->max_history) {
array_shift($this->history);
array_shift($this->history_attrs);
}
$this->y--;
}
$this->y++;
}
/**
* Returns the current coordinate without preformating
*
* @access private
* @return string
*/
function _processCoordinate($last_attr, $cur_attr, $char)
{
$output = '';
if ($last_attr != $cur_attr) {
$close = $open = '';
if ($last_attr->foreground != $cur_attr->foreground) {
if ($cur_attr->foreground != 'white') {
$open.= '<span style="color: ' . $cur_attr->foreground . '">';
}
if ($last_attr->foreground != 'white') {
$close = '</span>' . $close;
}
}
if ($last_attr->background != $cur_attr->background) {
if ($cur_attr->background != 'black') {
$open.= '<span style="background: ' . $cur_attr->background . '">';
}
if ($last_attr->background != 'black') {
$close = '</span>' . $close;
}
}
if ($last_attr->bold != $cur_attr->bold) {
if ($cur_attr->bold) {
$open.= '<b>';
} else {
$close = '</b>' . $close;
}
}
if ($last_attr->underline != $cur_attr->underline) {
if ($cur_attr->underline) {
$open.= '<u>';
} else {
$close = '</u>' . $close;
}
}
if ($last_attr->blink != $cur_attr->blink) {
if ($cur_attr->blink) {
$open.= '<blink>';
} else {
$close = '</blink>' . $close;
}
}
$output.= $close . $open;
}
$output.= htmlspecialchars($char);
return $output;
}
/**
* Returns the current screen without preformating
*
* @access private
* @return string
*/
function _getScreen()
{
$output = '';
$last_attr = $this->base_attr_cell;
for ($i = 0; $i <= $this->max_y; $i++) {
for ($j = 0; $j <= $this->max_x; $j++) {
$cur_attr = $this->attrs[$i][$j];
$output.= $this->_processCoordinate($last_attr, $cur_attr, isset($this->screen[$i][$j]) ? $this->screen[$i][$j] : '');
$last_attr = $this->attrs[$i][$j];
}
$output.= "\r\n";
}
$output = substr($output, 0, -2);
// close any remaining open tags
$output.= $this->_processCoordinate($last_attr, $this->base_attr_cell, '');
return rtrim($output);
}
/**
* Returns the current screen
*
* @access public
* @return string
*/
function getScreen()
{
return '<pre width="' . ($this->max_x + 1) . '" style="color: white; background: black">' . $this->_getScreen() . '</pre>';
}
/**
* Returns the current screen and the x previous lines
*
* @access public
* @return string
*/
function getHistory()
{
$scrollback = '';
$last_attr = $this->base_attr_cell;
for ($i = 0; $i < count($this->history); $i++) {
for ($j = 0; $j <= $this->max_x + 1; $j++) {
$cur_attr = $this->history_attrs[$i][$j];
$scrollback.= $this->_processCoordinate($last_attr, $cur_attr, isset($this->history[$i][$j]) ? $this->history[$i][$j] : '');
$last_attr = $this->history_attrs[$i][$j];
}
$scrollback.= "\r\n";
}
$base_attr_cell = $this->base_attr_cell;
$this->base_attr_cell = $last_attr;
$scrollback.= $this->_getScreen();
$this->base_attr_cell = $base_attr_cell;
return '<pre width="' . ($this->max_x + 1) . '" style="color: white; background: black">' . $scrollback . '</span></pre>';
}
}
PK ��$Z�h h phpseclib/phpseclib/openssl.cnfnu �[��� # minimalist openssl.cnf file for use with phpseclib
HOME = .
RANDFILE = $ENV::HOME/.rnd
[ v3_ca ]
PK ��$Z� |�# �# phpseclib/phpseclib/Net/SCP.phpnu �[��� <?php
/**
* Pure-PHP implementation of SCP.
*
* PHP version 5
*
* The API for this library is modeled after the API from PHP's {@link http://php.net/book.ftp FTP extension}.
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $ssh = new \phpseclib\Net\SSH2('www.domain.tld');
* if (!$ssh->login('username', 'password')) {
* exit('bad login');
* }
* $scp = new \phpseclib\Net\SCP($ssh);
*
* $scp->put('abcd', str_repeat('x', 1024*1024));
* ?>
* </code>
*
* @category Net
* @package SCP
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2010 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Net;
/**
* Pure-PHP implementations of SCP.
*
* @package SCP
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class SCP
{
/**#@+
* @access public
* @see \phpseclib\Net\SCP::put()
*/
/**
* Reads data from a local file.
*/
const SOURCE_LOCAL_FILE = 1;
/**
* Reads data from a string.
*/
const SOURCE_STRING = 2;
/**#@-*/
/**#@+
* @access private
* @see \phpseclib\Net\SCP::_send()
* @see \phpseclib\Net\SCP::_receive()
*/
/**
* SSH1 is being used.
*/
const MODE_SSH1 = 1;
/**
* SSH2 is being used.
*/
const MODE_SSH2 = 2;
/**#@-*/
/**
* SSH Object
*
* @var object
* @access private
*/
var $ssh;
/**
* Packet Size
*
* @var int
* @access private
*/
var $packet_size;
/**
* Mode
*
* @var int
* @access private
*/
var $mode;
/**
* Default Constructor.
*
* Connects to an SSH server
*
* @param \phpseclib\Net\SSH1|\phpseclib\Net\SSH2 $ssh
* @return \phpseclib\Net\SCP
* @access public
*/
function __construct($ssh)
{
if ($ssh instanceof SSH2) {
$this->mode = self::MODE_SSH2;
} elseif ($ssh instanceof SSH1) {
$this->packet_size = 50000;
$this->mode = self::MODE_SSH1;
} else {
return;
}
$this->ssh = $ssh;
}
/**
* Uploads a file to the SCP server.
*
* By default, \phpseclib\Net\SCP::put() does not read from the local filesystem. $data is dumped directly into $remote_file.
* So, for example, if you set $data to 'filename.ext' and then do \phpseclib\Net\SCP::get(), you will get a file, twelve bytes
* long, containing 'filename.ext' as its contents.
*
* Setting $mode to self::SOURCE_LOCAL_FILE will change the above behavior. With self::SOURCE_LOCAL_FILE, $remote_file will
* contain as many bytes as filename.ext does on your local filesystem. If your filename.ext is 1MB then that is how
* large $remote_file will be, as well.
*
* Currently, only binary mode is supported. As such, if the line endings need to be adjusted, you will need to take
* care of that, yourself.
*
* @param string $remote_file
* @param string $data
* @param int $mode
* @param callable $callback
* @return bool
* @access public
*/
function put($remote_file, $data, $mode = self::SOURCE_STRING, $callback = null)
{
if (!isset($this->ssh)) {
return false;
}
if (empty($remote_file)) {
user_error('remote_file cannot be blank', E_USER_NOTICE);
return false;
}
if (!$this->ssh->exec('scp -t ' . escapeshellarg($remote_file), false)) { // -t = to
return false;
}
$temp = $this->_receive();
if ($temp !== chr(0)) {
return false;
}
if ($this->mode == self::MODE_SSH2) {
$this->packet_size = $this->ssh->packet_size_client_to_server[SSH2::CHANNEL_EXEC] - 4;
}
$remote_file = basename($remote_file);
if ($mode == self::SOURCE_STRING) {
$size = strlen($data);
} else {
if (!is_file($data)) {
user_error("$data is not a valid file", E_USER_NOTICE);
return false;
}
$fp = @fopen($data, 'rb');
if (!$fp) {
return false;
}
$size = filesize($data);
}
$this->_send('C0644 ' . $size . ' ' . $remote_file . "\n");
$temp = $this->_receive();
if ($temp !== chr(0)) {
return false;
}
$sent = 0;
while ($sent < $size) {
$temp = $mode & self::SOURCE_STRING ? substr($data, $sent, $this->packet_size) : fread($fp, $this->packet_size);
$this->_send($temp);
$sent+= strlen($temp);
if (is_callable($callback)) {
call_user_func($callback, $sent);
}
}
$this->_close();
if ($mode != self::SOURCE_STRING) {
fclose($fp);
}
return true;
}
/**
* Downloads a file from the SCP server.
*
* Returns a string containing the contents of $remote_file if $local_file is left undefined or a boolean false if
* the operation was unsuccessful. If $local_file is defined, returns true or false depending on the success of the
* operation
*
* @param string $remote_file
* @param string $local_file
* @return mixed
* @access public
*/
function get($remote_file, $local_file = false)
{
if (!isset($this->ssh)) {
return false;
}
if (!$this->ssh->exec('scp -f ' . escapeshellarg($remote_file), false)) { // -f = from
return false;
}
$this->_send("\0");
if (!preg_match('#(?<perms>[^ ]+) (?<size>\d+) (?<name>.+)#', rtrim($this->_receive()), $info)) {
return false;
}
$this->_send("\0");
$size = 0;
if ($local_file !== false) {
$fp = @fopen($local_file, 'wb');
if (!$fp) {
return false;
}
}
$content = '';
while ($size < $info['size']) {
$data = $this->_receive();
// SCP usually seems to split stuff out into 16k chunks
$size+= strlen($data);
if ($local_file === false) {
$content.= $data;
} else {
fputs($fp, $data);
}
}
$this->_close();
if ($local_file !== false) {
fclose($fp);
return true;
}
return $content;
}
/**
* Sends a packet to an SSH server
*
* @param string $data
* @access private
*/
function _send($data)
{
switch ($this->mode) {
case self::MODE_SSH2:
$this->ssh->_send_channel_packet(SSH2::CHANNEL_EXEC, $data);
break;
case self::MODE_SSH1:
$data = pack('CNa*', NET_SSH1_CMSG_STDIN_DATA, strlen($data), $data);
$this->ssh->_send_binary_packet($data);
}
}
/**
* Receives a packet from an SSH server
*
* @return string
* @access private
*/
function _receive()
{
switch ($this->mode) {
case self::MODE_SSH2:
return $this->ssh->_get_channel_packet(SSH2::CHANNEL_EXEC, true);
case self::MODE_SSH1:
if (!$this->ssh->bitmap) {
return false;
}
while (true) {
$response = $this->ssh->_get_binary_packet();
switch ($response[SSH1::RESPONSE_TYPE]) {
case NET_SSH1_SMSG_STDOUT_DATA:
if (strlen($response[SSH1::RESPONSE_DATA]) < 4) {
return false;
}
extract(unpack('Nlength', $response[SSH1::RESPONSE_DATA]));
return $this->ssh->_string_shift($response[SSH1::RESPONSE_DATA], $length);
case NET_SSH1_SMSG_STDERR_DATA:
break;
case NET_SSH1_SMSG_EXITSTATUS:
$this->ssh->_send_binary_packet(chr(NET_SSH1_CMSG_EXIT_CONFIRMATION));
fclose($this->ssh->fsock);
$this->ssh->bitmap = 0;
return false;
default:
user_error('Unknown packet received', E_USER_NOTICE);
return false;
}
}
}
}
/**
* Closes the connection to an SSH server
*
* @access private
*/
function _close()
{
switch ($this->mode) {
case self::MODE_SSH2:
$this->ssh->_close_channel(SSH2::CHANNEL_EXEC, true);
break;
case self::MODE_SSH1:
$this->ssh->disconnect();
}
}
}
PK ��$ZO �t�� �� phpseclib/phpseclib/Net/SSH1.phpnu �[��� <?php
/**
* Pure-PHP implementation of SSHv1.
*
* PHP version 5
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $ssh = new \phpseclib\Net\SSH1('www.domain.tld');
* if (!$ssh->login('username', 'password')) {
* exit('Login Failed');
* }
*
* echo $ssh->exec('ls -la');
* ?>
* </code>
*
* Here's another short example:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $ssh = new \phpseclib\Net\SSH1('www.domain.tld');
* if (!$ssh->login('username', 'password')) {
* exit('Login Failed');
* }
*
* echo $ssh->read('username@username:~$');
* $ssh->write("ls -la\n");
* echo $ssh->read('username@username:~$');
* ?>
* </code>
*
* More information on the SSHv1 specification can be found by reading
* {@link http://www.snailbook.com/docs/protocol-1.5.txt protocol-1.5.txt}.
*
* @category Net
* @package SSH1
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2007 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Net;
use phpseclib\Crypt\DES;
use phpseclib\Crypt\Random;
use phpseclib\Crypt\TripleDES;
use phpseclib\Math\BigInteger;
/**
* Pure-PHP implementation of SSHv1.
*
* @package SSH1
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class SSH1
{
/**#@+
* Encryption Methods
*
* @see \phpseclib\Net\SSH1::getSupportedCiphers()
* @access public
*/
/**
* No encryption
*
* Not supported.
*/
const CIPHER_NONE = 0;
/**
* IDEA in CFB mode
*
* Not supported.
*/
const CIPHER_IDEA = 1;
/**
* DES in CBC mode
*/
const CIPHER_DES = 2;
/**
* Triple-DES in CBC mode
*
* All implementations are required to support this
*/
const CIPHER_3DES = 3;
/**
* TRI's Simple Stream encryption CBC
*
* Not supported nor is it defined in the official SSH1 specs. OpenSSH, however, does define it (see cipher.h),
* although it doesn't use it (see cipher.c)
*/
const CIPHER_BROKEN_TSS = 4;
/**
* RC4
*
* Not supported.
*
* @internal According to the SSH1 specs:
*
* "The first 16 bytes of the session key are used as the key for
* the server to client direction. The remaining 16 bytes are used
* as the key for the client to server direction. This gives
* independent 128-bit keys for each direction."
*
* This library currently only supports encryption when the same key is being used for both directions. This is
* because there's only one $crypto object. Two could be added ($encrypt and $decrypt, perhaps).
*/
const CIPHER_RC4 = 5;
/**
* Blowfish
*
* Not supported nor is it defined in the official SSH1 specs. OpenSSH, however, defines it (see cipher.h) and
* uses it (see cipher.c)
*/
const CIPHER_BLOWFISH = 6;
/**#@-*/
/**#@+
* Authentication Methods
*
* @see \phpseclib\Net\SSH1::getSupportedAuthentications()
* @access public
*/
/**
* .rhosts or /etc/hosts.equiv
*/
const AUTH_RHOSTS = 1;
/**
* pure RSA authentication
*/
const AUTH_RSA = 2;
/**
* password authentication
*
* This is the only method that is supported by this library.
*/
const AUTH_PASSWORD = 3;
/**
* .rhosts with RSA host authentication
*/
const AUTH_RHOSTS_RSA = 4;
/**#@-*/
/**#@+
* Terminal Modes
*
* @link http://3sp.com/content/developer/maverick-net/docs/Maverick.SSH.PseudoTerminalModesMembers.html
* @access private
*/
const TTY_OP_END = 0;
/**#@-*/
/**
* The Response Type
*
* @see \phpseclib\Net\SSH1::_get_binary_packet()
* @access private
*/
const RESPONSE_TYPE = 1;
/**
* The Response Data
*
* @see \phpseclib\Net\SSH1::_get_binary_packet()
* @access private
*/
const RESPONSE_DATA = 2;
/**#@+
* Execution Bitmap Masks
*
* @see \phpseclib\Net\SSH1::bitmap
* @access private
*/
const MASK_CONSTRUCTOR = 0x00000001;
const MASK_CONNECTED = 0x00000002;
const MASK_LOGIN = 0x00000004;
const MASK_SHELL = 0x00000008;
/**#@-*/
/**#@+
* @access public
* @see \phpseclib\Net\SSH1::getLog()
*/
/**
* Returns the message numbers
*/
const LOG_SIMPLE = 1;
/**
* Returns the message content
*/
const LOG_COMPLEX = 2;
/**
* Outputs the content real-time
*/
const LOG_REALTIME = 3;
/**
* Dumps the content real-time to a file
*/
const LOG_REALTIME_FILE = 4;
/**#@-*/
/**#@+
* @access public
* @see \phpseclib\Net\SSH1::read()
*/
/**
* Returns when a string matching $expect exactly is found
*/
const READ_SIMPLE = 1;
/**
* Returns when a string matching the regular expression $expect is found
*/
const READ_REGEX = 2;
/**#@-*/
/**
* The SSH identifier
*
* @var string
* @access private
*/
var $identifier = 'SSH-1.5-phpseclib';
/**
* The Socket Object
*
* @var object
* @access private
*/
var $fsock;
/**
* The cryptography object
*
* @var object
* @access private
*/
var $crypto = false;
/**
* Execution Bitmap
*
* The bits that are set represent functions that have been called already. This is used to determine
* if a requisite function has been successfully executed. If not, an error should be thrown.
*
* @var int
* @access private
*/
var $bitmap = 0;
/**
* The Server Key Public Exponent
*
* Logged for debug purposes
*
* @see self::getServerKeyPublicExponent()
* @var string
* @access private
*/
var $server_key_public_exponent;
/**
* The Server Key Public Modulus
*
* Logged for debug purposes
*
* @see self::getServerKeyPublicModulus()
* @var string
* @access private
*/
var $server_key_public_modulus;
/**
* The Host Key Public Exponent
*
* Logged for debug purposes
*
* @see self::getHostKeyPublicExponent()
* @var string
* @access private
*/
var $host_key_public_exponent;
/**
* The Host Key Public Modulus
*
* Logged for debug purposes
*
* @see self::getHostKeyPublicModulus()
* @var string
* @access private
*/
var $host_key_public_modulus;
/**
* Supported Ciphers
*
* Logged for debug purposes
*
* @see self::getSupportedCiphers()
* @var array
* @access private
*/
var $supported_ciphers = array(
self::CIPHER_NONE => 'No encryption',
self::CIPHER_IDEA => 'IDEA in CFB mode',
self::CIPHER_DES => 'DES in CBC mode',
self::CIPHER_3DES => 'Triple-DES in CBC mode',
self::CIPHER_BROKEN_TSS => 'TRI\'s Simple Stream encryption CBC',
self::CIPHER_RC4 => 'RC4',
self::CIPHER_BLOWFISH => 'Blowfish'
);
/**
* Supported Authentications
*
* Logged for debug purposes
*
* @see self::getSupportedAuthentications()
* @var array
* @access private
*/
var $supported_authentications = array(
self::AUTH_RHOSTS => '.rhosts or /etc/hosts.equiv',
self::AUTH_RSA => 'pure RSA authentication',
self::AUTH_PASSWORD => 'password authentication',
self::AUTH_RHOSTS_RSA => '.rhosts with RSA host authentication'
);
/**
* Server Identification
*
* @see self::getServerIdentification()
* @var string
* @access private
*/
var $server_identification = '';
/**
* Protocol Flags
*
* @see self::__construct()
* @var array
* @access private
*/
var $protocol_flags = array();
/**
* Protocol Flag Log
*
* @see self::getLog()
* @var array
* @access private
*/
var $protocol_flag_log = array();
/**
* Message Log
*
* @see self::getLog()
* @var array
* @access private
*/
var $message_log = array();
/**
* Real-time log file pointer
*
* @see self::_append_log()
* @var resource
* @access private
*/
var $realtime_log_file;
/**
* Real-time log file size
*
* @see self::_append_log()
* @var int
* @access private
*/
var $realtime_log_size;
/**
* Real-time log file wrap boolean
*
* @see self::_append_log()
* @var bool
* @access private
*/
var $realtime_log_wrap;
/**
* Interactive Buffer
*
* @see self::read()
* @var array
* @access private
*/
var $interactiveBuffer = '';
/**
* Timeout
*
* @see self::setTimeout()
* @access private
*/
var $timeout;
/**
* Current Timeout
*
* @see self::_get_channel_packet()
* @access private
*/
var $curTimeout;
/**
* Log Boundary
*
* @see self::_format_log()
* @access private
*/
var $log_boundary = ':';
/**
* Log Long Width
*
* @see self::_format_log()
* @access private
*/
var $log_long_width = 65;
/**
* Log Short Width
*
* @see self::_format_log()
* @access private
*/
var $log_short_width = 16;
/**
* Hostname
*
* @see self::__construct()
* @see self::_connect()
* @var string
* @access private
*/
var $host;
/**
* Port Number
*
* @see self::__construct()
* @see self::_connect()
* @var int
* @access private
*/
var $port;
/**
* Timeout for initial connection
*
* Set by the constructor call. Calling setTimeout() is optional. If it's not called functions like
* exec() won't timeout unless some PHP setting forces it too. The timeout specified in the constructor,
* however, is non-optional. There will be a timeout, whether or not you set it. If you don't it'll be
* 10 seconds. It is used by fsockopen() in that function.
*
* @see self::__construct()
* @see self::_connect()
* @var int
* @access private
*/
var $connectionTimeout;
/**
* Default cipher
*
* @see self::__construct()
* @see self::_connect()
* @var int
* @access private
*/
var $cipher;
/**
* Default Constructor.
*
* Connects to an SSHv1 server
*
* @param string $host
* @param int $port
* @param int $timeout
* @param int $cipher
* @return \phpseclib\Net\SSH1
* @access public
*/
function __construct($host, $port = 22, $timeout = 10, $cipher = self::CIPHER_3DES)
{
$this->protocol_flags = array(
1 => 'NET_SSH1_MSG_DISCONNECT',
2 => 'NET_SSH1_SMSG_PUBLIC_KEY',
3 => 'NET_SSH1_CMSG_SESSION_KEY',
4 => 'NET_SSH1_CMSG_USER',
9 => 'NET_SSH1_CMSG_AUTH_PASSWORD',
10 => 'NET_SSH1_CMSG_REQUEST_PTY',
12 => 'NET_SSH1_CMSG_EXEC_SHELL',
13 => 'NET_SSH1_CMSG_EXEC_CMD',
14 => 'NET_SSH1_SMSG_SUCCESS',
15 => 'NET_SSH1_SMSG_FAILURE',
16 => 'NET_SSH1_CMSG_STDIN_DATA',
17 => 'NET_SSH1_SMSG_STDOUT_DATA',
18 => 'NET_SSH1_SMSG_STDERR_DATA',
19 => 'NET_SSH1_CMSG_EOF',
20 => 'NET_SSH1_SMSG_EXITSTATUS',
33 => 'NET_SSH1_CMSG_EXIT_CONFIRMATION'
);
$this->_define_array($this->protocol_flags);
$this->host = $host;
$this->port = $port;
$this->connectionTimeout = $timeout;
$this->cipher = $cipher;
}
/**
* Connect to an SSHv1 server
*
* @return bool
* @access private
*/
function _connect()
{
$this->fsock = @fsockopen($this->host, $this->port, $errno, $errstr, $this->connectionTimeout);
if (!$this->fsock) {
user_error(rtrim("Cannot connect to {$this->host}:{$this->port}. Error $errno. $errstr"));
return false;
}
$this->server_identification = $init_line = fgets($this->fsock, 255);
if (defined('NET_SSH1_LOGGING')) {
$this->_append_log('<-', $this->server_identification);
$this->_append_log('->', $this->identifier . "\r\n");
}
if (!preg_match('#SSH-([0-9\.]+)-(.+)#', $init_line, $parts)) {
user_error('Can only connect to SSH servers');
return false;
}
if ($parts[1][0] != 1) {
user_error("Cannot connect to SSH $parts[1] servers");
return false;
}
fputs($this->fsock, $this->identifier."\r\n");
$response = $this->_get_binary_packet();
if ($response[self::RESPONSE_TYPE] != NET_SSH1_SMSG_PUBLIC_KEY) {
user_error('Expected SSH_SMSG_PUBLIC_KEY');
return false;
}
$anti_spoofing_cookie = $this->_string_shift($response[self::RESPONSE_DATA], 8);
$this->_string_shift($response[self::RESPONSE_DATA], 4);
if (strlen($response[self::RESPONSE_DATA]) < 2) {
return false;
}
$temp = unpack('nlen', $this->_string_shift($response[self::RESPONSE_DATA], 2));
$server_key_public_exponent = new BigInteger($this->_string_shift($response[self::RESPONSE_DATA], ceil($temp['len'] / 8)), 256);
$this->server_key_public_exponent = $server_key_public_exponent;
if (strlen($response[self::RESPONSE_DATA]) < 2) {
return false;
}
$temp = unpack('nlen', $this->_string_shift($response[self::RESPONSE_DATA], 2));
$server_key_public_modulus = new BigInteger($this->_string_shift($response[self::RESPONSE_DATA], ceil($temp['len'] / 8)), 256);
$this->server_key_public_modulus = $server_key_public_modulus;
$this->_string_shift($response[self::RESPONSE_DATA], 4);
if (strlen($response[self::RESPONSE_DATA]) < 2) {
return false;
}
$temp = unpack('nlen', $this->_string_shift($response[self::RESPONSE_DATA], 2));
$host_key_public_exponent = new BigInteger($this->_string_shift($response[self::RESPONSE_DATA], ceil($temp['len'] / 8)), 256);
$this->host_key_public_exponent = $host_key_public_exponent;
if (strlen($response[self::RESPONSE_DATA]) < 2) {
return false;
}
$temp = unpack('nlen', $this->_string_shift($response[self::RESPONSE_DATA], 2));
$host_key_public_modulus = new BigInteger($this->_string_shift($response[self::RESPONSE_DATA], ceil($temp['len'] / 8)), 256);
$this->host_key_public_modulus = $host_key_public_modulus;
$this->_string_shift($response[self::RESPONSE_DATA], 4);
// get a list of the supported ciphers
if (strlen($response[self::RESPONSE_DATA]) < 4) {
return false;
}
extract(unpack('Nsupported_ciphers_mask', $this->_string_shift($response[self::RESPONSE_DATA], 4)));
foreach ($this->supported_ciphers as $mask => $name) {
if (($supported_ciphers_mask & (1 << $mask)) == 0) {
unset($this->supported_ciphers[$mask]);
}
}
// get a list of the supported authentications
if (strlen($response[self::RESPONSE_DATA]) < 4) {
return false;
}
extract(unpack('Nsupported_authentications_mask', $this->_string_shift($response[self::RESPONSE_DATA], 4)));
foreach ($this->supported_authentications as $mask => $name) {
if (($supported_authentications_mask & (1 << $mask)) == 0) {
unset($this->supported_authentications[$mask]);
}
}
$session_id = pack('H*', md5($host_key_public_modulus->toBytes() . $server_key_public_modulus->toBytes() . $anti_spoofing_cookie));
$session_key = Random::string(32);
$double_encrypted_session_key = $session_key ^ str_pad($session_id, 32, chr(0));
if ($server_key_public_modulus->compare($host_key_public_modulus) < 0) {
$double_encrypted_session_key = $this->_rsa_crypt(
$double_encrypted_session_key,
array(
$server_key_public_exponent,
$server_key_public_modulus
)
);
$double_encrypted_session_key = $this->_rsa_crypt(
$double_encrypted_session_key,
array(
$host_key_public_exponent,
$host_key_public_modulus
)
);
} else {
$double_encrypted_session_key = $this->_rsa_crypt(
$double_encrypted_session_key,
array(
$host_key_public_exponent,
$host_key_public_modulus
)
);
$double_encrypted_session_key = $this->_rsa_crypt(
$double_encrypted_session_key,
array(
$server_key_public_exponent,
$server_key_public_modulus
)
);
}
$cipher = isset($this->supported_ciphers[$this->cipher]) ? $this->cipher : self::CIPHER_3DES;
$data = pack('C2a*na*N', NET_SSH1_CMSG_SESSION_KEY, $cipher, $anti_spoofing_cookie, 8 * strlen($double_encrypted_session_key), $double_encrypted_session_key, 0);
if (!$this->_send_binary_packet($data)) {
user_error('Error sending SSH_CMSG_SESSION_KEY');
return false;
}
switch ($cipher) {
//case self::CIPHER_NONE:
// $this->crypto = new \phpseclib\Crypt\Null();
// break;
case self::CIPHER_DES:
$this->crypto = new DES();
$this->crypto->disablePadding();
$this->crypto->enableContinuousBuffer();
$this->crypto->setKey(substr($session_key, 0, 8));
break;
case self::CIPHER_3DES:
$this->crypto = new TripleDES(TripleDES::MODE_3CBC);
$this->crypto->disablePadding();
$this->crypto->enableContinuousBuffer();
$this->crypto->setKey(substr($session_key, 0, 24));
break;
//case self::CIPHER_RC4:
// $this->crypto = new RC4();
// $this->crypto->enableContinuousBuffer();
// $this->crypto->setKey(substr($session_key, 0, 16));
// break;
}
$response = $this->_get_binary_packet();
if ($response[self::RESPONSE_TYPE] != NET_SSH1_SMSG_SUCCESS) {
user_error('Expected SSH_SMSG_SUCCESS');
return false;
}
$this->bitmap = self::MASK_CONNECTED;
return true;
}
/**
* Login
*
* @param string $username
* @param string $password
* @return bool
* @access public
*/
function login($username, $password = '')
{
if (!($this->bitmap & self::MASK_CONSTRUCTOR)) {
$this->bitmap |= self::MASK_CONSTRUCTOR;
if (!$this->_connect()) {
return false;
}
}
if (!($this->bitmap & self::MASK_CONNECTED)) {
return false;
}
$data = pack('CNa*', NET_SSH1_CMSG_USER, strlen($username), $username);
if (!$this->_send_binary_packet($data)) {
user_error('Error sending SSH_CMSG_USER');
return false;
}
$response = $this->_get_binary_packet();
if ($response === true) {
return false;
}
if ($response[self::RESPONSE_TYPE] == NET_SSH1_SMSG_SUCCESS) {
$this->bitmap |= self::MASK_LOGIN;
return true;
} elseif ($response[self::RESPONSE_TYPE] != NET_SSH1_SMSG_FAILURE) {
user_error('Expected SSH_SMSG_SUCCESS or SSH_SMSG_FAILURE');
return false;
}
$data = pack('CNa*', NET_SSH1_CMSG_AUTH_PASSWORD, strlen($password), $password);
if (!$this->_send_binary_packet($data)) {
user_error('Error sending SSH_CMSG_AUTH_PASSWORD');
return false;
}
// remove the username and password from the last logged packet
if (defined('NET_SSH1_LOGGING') && NET_SSH1_LOGGING == self::LOG_COMPLEX) {
$data = pack('CNa*', NET_SSH1_CMSG_AUTH_PASSWORD, strlen('password'), 'password');
$this->message_log[count($this->message_log) - 1] = $data;
}
$response = $this->_get_binary_packet();
if ($response === true) {
return false;
}
if ($response[self::RESPONSE_TYPE] == NET_SSH1_SMSG_SUCCESS) {
$this->bitmap |= self::MASK_LOGIN;
return true;
} elseif ($response[self::RESPONSE_TYPE] == NET_SSH1_SMSG_FAILURE) {
return false;
} else {
user_error('Expected SSH_SMSG_SUCCESS or SSH_SMSG_FAILURE');
return false;
}
}
/**
* Set Timeout
*
* $ssh->exec('ping 127.0.0.1'); on a Linux host will never return and will run indefinitely. setTimeout() makes it so it'll timeout.
* Setting $timeout to false or 0 will mean there is no timeout.
*
* @param mixed $timeout
*/
function setTimeout($timeout)
{
$this->timeout = $this->curTimeout = $timeout;
}
/**
* Executes a command on a non-interactive shell, returns the output, and quits.
*
* An SSH1 server will close the connection after a command has been executed on a non-interactive shell. SSH2
* servers don't, however, this isn't an SSH2 client. The way this works, on the server, is by initiating a
* shell with the -s option, as discussed in the following links:
*
* {@link http://www.faqs.org/docs/bashman/bashref_65.html http://www.faqs.org/docs/bashman/bashref_65.html}
* {@link http://www.faqs.org/docs/bashman/bashref_62.html http://www.faqs.org/docs/bashman/bashref_62.html}
*
* To execute further commands, a new \phpseclib\Net\SSH1 object will need to be created.
*
* Returns false on failure and the output, otherwise.
*
* @see self::interactiveRead()
* @see self::interactiveWrite()
* @param string $cmd
* @param bool $block
* @return mixed
* @access public
*/
function exec($cmd, $block = true)
{
if (!($this->bitmap & self::MASK_LOGIN)) {
user_error('Operation disallowed prior to login()');
return false;
}
$data = pack('CNa*', NET_SSH1_CMSG_EXEC_CMD, strlen($cmd), $cmd);
if (!$this->_send_binary_packet($data)) {
user_error('Error sending SSH_CMSG_EXEC_CMD');
return false;
}
if (!$block) {
return true;
}
$output = '';
$response = $this->_get_binary_packet();
if ($response !== false) {
do {
$output.= substr($response[self::RESPONSE_DATA], 4);
$response = $this->_get_binary_packet();
} while (is_array($response) && $response[self::RESPONSE_TYPE] != NET_SSH1_SMSG_EXITSTATUS);
}
$data = pack('C', NET_SSH1_CMSG_EXIT_CONFIRMATION);
// i don't think it's really all that important if this packet gets sent or not.
$this->_send_binary_packet($data);
fclose($this->fsock);
// reset the execution bitmap - a new \phpseclib\Net\SSH1 object needs to be created.
$this->bitmap = 0;
return $output;
}
/**
* Creates an interactive shell
*
* @see self::interactiveRead()
* @see self::interactiveWrite()
* @return bool
* @access private
*/
function _initShell()
{
// connect using the sample parameters in protocol-1.5.txt.
// according to wikipedia.org's entry on text terminals, "the fundamental type of application running on a text
// terminal is a command line interpreter or shell". thus, opening a terminal session to run the shell.
$data = pack('CNa*N4C', NET_SSH1_CMSG_REQUEST_PTY, strlen('vt100'), 'vt100', 24, 80, 0, 0, self::TTY_OP_END);
if (!$this->_send_binary_packet($data)) {
user_error('Error sending SSH_CMSG_REQUEST_PTY');
return false;
}
$response = $this->_get_binary_packet();
if ($response === true) {
return false;
}
if ($response[self::RESPONSE_TYPE] != NET_SSH1_SMSG_SUCCESS) {
user_error('Expected SSH_SMSG_SUCCESS');
return false;
}
$data = pack('C', NET_SSH1_CMSG_EXEC_SHELL);
if (!$this->_send_binary_packet($data)) {
user_error('Error sending SSH_CMSG_EXEC_SHELL');
return false;
}
$this->bitmap |= self::MASK_SHELL;
//stream_set_blocking($this->fsock, 0);
return true;
}
/**
* Inputs a command into an interactive shell.
*
* @see self::interactiveWrite()
* @param string $cmd
* @return bool
* @access public
*/
function write($cmd)
{
return $this->interactiveWrite($cmd);
}
/**
* Returns the output of an interactive shell when there's a match for $expect
*
* $expect can take the form of a string literal or, if $mode == self::READ_REGEX,
* a regular expression.
*
* @see self::write()
* @param string $expect
* @param int $mode
* @return bool
* @access public
*/
function read($expect, $mode = self::READ_SIMPLE)
{
if (!($this->bitmap & self::MASK_LOGIN)) {
user_error('Operation disallowed prior to login()');
return false;
}
if (!($this->bitmap & self::MASK_SHELL) && !$this->_initShell()) {
user_error('Unable to initiate an interactive shell session');
return false;
}
$match = $expect;
while (true) {
if ($mode == self::READ_REGEX) {
preg_match($expect, $this->interactiveBuffer, $matches);
$match = isset($matches[0]) ? $matches[0] : '';
}
$pos = strlen($match) ? strpos($this->interactiveBuffer, $match) : false;
if ($pos !== false) {
return $this->_string_shift($this->interactiveBuffer, $pos + strlen($match));
}
$response = $this->_get_binary_packet();
if ($response === true) {
return $this->_string_shift($this->interactiveBuffer, strlen($this->interactiveBuffer));
}
$this->interactiveBuffer.= substr($response[self::RESPONSE_DATA], 4);
}
}
/**
* Inputs a command into an interactive shell.
*
* @see self::interactiveRead()
* @param string $cmd
* @return bool
* @access public
*/
function interactiveWrite($cmd)
{
if (!($this->bitmap & self::MASK_LOGIN)) {
user_error('Operation disallowed prior to login()');
return false;
}
if (!($this->bitmap & self::MASK_SHELL) && !$this->_initShell()) {
user_error('Unable to initiate an interactive shell session');
return false;
}
$data = pack('CNa*', NET_SSH1_CMSG_STDIN_DATA, strlen($cmd), $cmd);
if (!$this->_send_binary_packet($data)) {
user_error('Error sending SSH_CMSG_STDIN');
return false;
}
return true;
}
/**
* Returns the output of an interactive shell when no more output is available.
*
* Requires PHP 4.3.0 or later due to the use of the stream_select() function. If you see stuff like
* "^[[00m", you're seeing ANSI escape codes. According to
* {@link http://support.microsoft.com/kb/101875 How to Enable ANSI.SYS in a Command Window}, "Windows NT
* does not support ANSI escape sequences in Win32 Console applications", so if you're a Windows user,
* there's not going to be much recourse.
*
* @see self::interactiveRead()
* @return string
* @access public
*/
function interactiveRead()
{
if (!($this->bitmap & self::MASK_LOGIN)) {
user_error('Operation disallowed prior to login()');
return false;
}
if (!($this->bitmap & self::MASK_SHELL) && !$this->_initShell()) {
user_error('Unable to initiate an interactive shell session');
return false;
}
$read = array($this->fsock);
$write = $except = null;
if (stream_select($read, $write, $except, 0)) {
$response = $this->_get_binary_packet();
return substr($response[self::RESPONSE_DATA], 4);
} else {
return '';
}
}
/**
* Disconnect
*
* @access public
*/
function disconnect()
{
$this->_disconnect();
}
/**
* Destructor.
*
* Will be called, automatically, if you're supporting just PHP5. If you're supporting PHP4, you'll need to call
* disconnect().
*
* @access public
*/
function __destruct()
{
$this->_disconnect();
}
/**
* Disconnect
*
* @param string $msg
* @access private
*/
function _disconnect($msg = 'Client Quit')
{
if ($this->bitmap) {
$data = pack('C', NET_SSH1_CMSG_EOF);
$this->_send_binary_packet($data);
/*
$response = $this->_get_binary_packet();
if ($response === true) {
$response = array(self::RESPONSE_TYPE => -1);
}
switch ($response[self::RESPONSE_TYPE]) {
case NET_SSH1_SMSG_EXITSTATUS:
$data = pack('C', NET_SSH1_CMSG_EXIT_CONFIRMATION);
break;
default:
$data = pack('CNa*', NET_SSH1_MSG_DISCONNECT, strlen($msg), $msg);
}
*/
$data = pack('CNa*', NET_SSH1_MSG_DISCONNECT, strlen($msg), $msg);
$this->_send_binary_packet($data);
fclose($this->fsock);
$this->bitmap = 0;
}
}
/**
* Gets Binary Packets
*
* See 'The Binary Packet Protocol' of protocol-1.5.txt for more info.
*
* Also, this function could be improved upon by adding detection for the following exploit:
* http://www.securiteam.com/securitynews/5LP042K3FY.html
*
* @see self::_send_binary_packet()
* @return array
* @access private
*/
function _get_binary_packet()
{
if (feof($this->fsock)) {
//user_error('connection closed prematurely');
return false;
}
if ($this->curTimeout) {
$read = array($this->fsock);
$write = $except = null;
$start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838
$sec = floor($this->curTimeout);
$usec = 1000000 * ($this->curTimeout - $sec);
// on windows this returns a "Warning: Invalid CRT parameters detected" error
if (!@stream_select($read, $write, $except, $sec, $usec) && !count($read)) {
//$this->_disconnect('Timeout');
return true;
}
$elapsed = strtok(microtime(), ' ') + strtok('') - $start;
$this->curTimeout-= $elapsed;
}
$start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838
$data = fread($this->fsock, 4);
if (strlen($data) < 4) {
return false;
}
$temp = unpack('Nlength', $data);
$padding_length = 8 - ($temp['length'] & 7);
$length = $temp['length'] + $padding_length;
$raw = '';
while ($length > 0) {
$temp = fread($this->fsock, $length);
if (strlen($temp) != $length) {
return false;
}
$raw.= $temp;
$length-= strlen($temp);
}
$stop = strtok(microtime(), ' ') + strtok('');
if (strlen($raw) && $this->crypto !== false) {
$raw = $this->crypto->decrypt($raw);
}
$padding = substr($raw, 0, $padding_length);
$type = $raw[$padding_length];
$data = substr($raw, $padding_length + 1, -4);
if (strlen($raw) < 4) {
return false;
}
$temp = unpack('Ncrc', substr($raw, -4));
//if ( $temp['crc'] != $this->_crc($padding . $type . $data) ) {
// user_error('Bad CRC in packet from server');
// return false;
//}
$type = ord($type);
if (defined('NET_SSH1_LOGGING')) {
$temp = isset($this->protocol_flags[$type]) ? $this->protocol_flags[$type] : 'UNKNOWN';
$temp = '<- ' . $temp .
' (' . round($stop - $start, 4) . 's)';
$this->_append_log($temp, $data);
}
return array(
self::RESPONSE_TYPE => $type,
self::RESPONSE_DATA => $data
);
}
/**
* Sends Binary Packets
*
* Returns true on success, false on failure.
*
* @see self::_get_binary_packet()
* @param string $data
* @return bool
* @access private
*/
function _send_binary_packet($data)
{
if (feof($this->fsock)) {
//user_error('connection closed prematurely');
return false;
}
$length = strlen($data) + 4;
$padding = Random::string(8 - ($length & 7));
$orig = $data;
$data = $padding . $data;
$data.= pack('N', $this->_crc($data));
if ($this->crypto !== false) {
$data = $this->crypto->encrypt($data);
}
$packet = pack('Na*', $length, $data);
$start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838
$result = strlen($packet) == fputs($this->fsock, $packet);
$stop = strtok(microtime(), ' ') + strtok('');
if (defined('NET_SSH1_LOGGING')) {
$temp = isset($this->protocol_flags[ord($orig[0])]) ? $this->protocol_flags[ord($orig[0])] : 'UNKNOWN';
$temp = '-> ' . $temp .
' (' . round($stop - $start, 4) . 's)';
$this->_append_log($temp, $orig);
}
return $result;
}
/**
* Cyclic Redundancy Check (CRC)
*
* PHP's crc32 function is implemented slightly differently than the one that SSH v1 uses, so
* we've reimplemented it. A more detailed discussion of the differences can be found after
* $crc_lookup_table's initialization.
*
* @see self::_get_binary_packet()
* @see self::_send_binary_packet()
* @param string $data
* @return int
* @access private
*/
function _crc($data)
{
static $crc_lookup_table = array(
0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA,
0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,
0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,
0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,
0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,
0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,
0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,
0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,
0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,
0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,
0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,
0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,
0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,
0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,
0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,
0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,
0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,
0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,
0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
);
// For this function to yield the same output as PHP's crc32 function, $crc would have to be
// set to 0xFFFFFFFF, initially - not 0x00000000 as it currently is.
$crc = 0x00000000;
$length = strlen($data);
for ($i=0; $i<$length; $i++) {
// We AND $crc >> 8 with 0x00FFFFFF because we want the eight newly added bits to all
// be zero. PHP, unfortunately, doesn't always do this. 0x80000000 >> 8, as an example,
// yields 0xFF800000 - not 0x00800000. The following link elaborates:
// http://www.php.net/manual/en/language.operators.bitwise.php#57281
$crc = (($crc >> 8) & 0x00FFFFFF) ^ $crc_lookup_table[($crc & 0xFF) ^ ord($data[$i])];
}
// In addition to having to set $crc to 0xFFFFFFFF, initially, the return value must be XOR'd with
// 0xFFFFFFFF for this function to return the same thing that PHP's crc32 function would.
return $crc;
}
/**
* String Shift
*
* Inspired by array_shift
*
* @param string $string
* @param int $index
* @return string
* @access private
*/
function _string_shift(&$string, $index = 1)
{
$substr = substr($string, 0, $index);
$string = substr($string, $index);
return $substr;
}
/**
* RSA Encrypt
*
* Returns mod(pow($m, $e), $n), where $n should be the product of two (large) primes $p and $q and where $e
* should be a number with the property that gcd($e, ($p - 1) * ($q - 1)) == 1. Could just make anything that
* calls this call modexp, instead, but I think this makes things clearer, maybe...
*
* @see self::__construct()
* @param BigInteger $m
* @param array $key
* @return BigInteger
* @access private
*/
function _rsa_crypt($m, $key)
{
/*
$rsa = new RSA();
$rsa->loadKey($key, RSA::PUBLIC_FORMAT_RAW);
$rsa->setEncryptionMode(RSA::ENCRYPTION_PKCS1);
return $rsa->encrypt($m);
*/
// To quote from protocol-1.5.txt:
// The most significant byte (which is only partial as the value must be
// less than the public modulus, which is never a power of two) is zero.
//
// The next byte contains the value 2 (which stands for public-key
// encrypted data in the PKCS standard [PKCS#1]). Then, there are non-
// zero random bytes to fill any unused space, a zero byte, and the data
// to be encrypted in the least significant bytes, the last byte of the
// data in the least significant byte.
// Presumably the part of PKCS#1 they're refering to is "Section 7.2.1 Encryption Operation",
// under "7.2 RSAES-PKCS1-v1.5" and "7 Encryption schemes" of the following URL:
// ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-1/pkcs-1v2-1.pdf
$modulus = $key[1]->toBytes();
$length = strlen($modulus) - strlen($m) - 3;
$random = '';
while (strlen($random) != $length) {
$block = Random::string($length - strlen($random));
$block = str_replace("\x00", '', $block);
$random.= $block;
}
$temp = chr(0) . chr(2) . $random . chr(0) . $m;
$m = new BigInteger($temp, 256);
$m = $m->modPow($key[0], $key[1]);
return $m->toBytes();
}
/**
* Define Array
*
* Takes any number of arrays whose indices are integers and whose values are strings and defines a bunch of
* named constants from it, using the value as the name of the constant and the index as the value of the constant.
* If any of the constants that would be defined already exists, none of the constants will be defined.
*
* @access private
*/
function _define_array()
{
$args = func_get_args();
foreach ($args as $arg) {
foreach ($arg as $key => $value) {
if (!defined($value)) {
define($value, $key);
} else {
break 2;
}
}
}
}
/**
* Returns a log of the packets that have been sent and received.
*
* Returns a string if NET_SSH1_LOGGING == self::LOG_COMPLEX, an array if NET_SSH1_LOGGING == self::LOG_SIMPLE and false if !defined('NET_SSH1_LOGGING')
*
* @access public
* @return array|false|string
*/
function getLog()
{
if (!defined('NET_SSH1_LOGGING')) {
return false;
}
switch (NET_SSH1_LOGGING) {
case self::LOG_SIMPLE:
return $this->message_number_log;
break;
case self::LOG_COMPLEX:
return $this->_format_log($this->message_log, $this->protocol_flags_log);
break;
default:
return false;
}
}
/**
* Formats a log for printing
*
* @param array $message_log
* @param array $message_number_log
* @access private
* @return string
*/
function _format_log($message_log, $message_number_log)
{
$output = '';
for ($i = 0; $i < count($message_log); $i++) {
$output.= $message_number_log[$i] . "\r\n";
$current_log = $message_log[$i];
$j = 0;
do {
if (strlen($current_log)) {
$output.= str_pad(dechex($j), 7, '0', STR_PAD_LEFT) . '0 ';
}
$fragment = $this->_string_shift($current_log, $this->log_short_width);
$hex = substr(preg_replace_callback('#.#s', array($this, '_format_log_helper'), $fragment), strlen($this->log_boundary));
// replace non ASCII printable characters with dots
// http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters
// also replace < with a . since < messes up the output on web browsers
$raw = preg_replace('#[^\x20-\x7E]|<#', '.', $fragment);
$output.= str_pad($hex, $this->log_long_width - $this->log_short_width, ' ') . $raw . "\r\n";
$j++;
} while (strlen($current_log));
$output.= "\r\n";
}
return $output;
}
/**
* Helper function for _format_log
*
* For use with preg_replace_callback()
*
* @param array $matches
* @access private
* @return string
*/
function _format_log_helper($matches)
{
return $this->log_boundary . str_pad(dechex(ord($matches[0])), 2, '0', STR_PAD_LEFT);
}
/**
* Return the server key public exponent
*
* Returns, by default, the base-10 representation. If $raw_output is set to true, returns, instead,
* the raw bytes. This behavior is similar to PHP's md5() function.
*
* @param bool $raw_output
* @return string
* @access public
*/
function getServerKeyPublicExponent($raw_output = false)
{
return $raw_output ? $this->server_key_public_exponent->toBytes() : $this->server_key_public_exponent->toString();
}
/**
* Return the server key public modulus
*
* Returns, by default, the base-10 representation. If $raw_output is set to true, returns, instead,
* the raw bytes. This behavior is similar to PHP's md5() function.
*
* @param bool $raw_output
* @return string
* @access public
*/
function getServerKeyPublicModulus($raw_output = false)
{
return $raw_output ? $this->server_key_public_modulus->toBytes() : $this->server_key_public_modulus->toString();
}
/**
* Return the host key public exponent
*
* Returns, by default, the base-10 representation. If $raw_output is set to true, returns, instead,
* the raw bytes. This behavior is similar to PHP's md5() function.
*
* @param bool $raw_output
* @return string
* @access public
*/
function getHostKeyPublicExponent($raw_output = false)
{
return $raw_output ? $this->host_key_public_exponent->toBytes() : $this->host_key_public_exponent->toString();
}
/**
* Return the host key public modulus
*
* Returns, by default, the base-10 representation. If $raw_output is set to true, returns, instead,
* the raw bytes. This behavior is similar to PHP's md5() function.
*
* @param bool $raw_output
* @return string
* @access public
*/
function getHostKeyPublicModulus($raw_output = false)
{
return $raw_output ? $this->host_key_public_modulus->toBytes() : $this->host_key_public_modulus->toString();
}
/**
* Return a list of ciphers supported by SSH1 server.
*
* Just because a cipher is supported by an SSH1 server doesn't mean it's supported by this library. If $raw_output
* is set to true, returns, instead, an array of constants. ie. instead of array('Triple-DES in CBC mode'), you'll
* get array(self::CIPHER_3DES).
*
* @param bool $raw_output
* @return array
* @access public
*/
function getSupportedCiphers($raw_output = false)
{
return $raw_output ? array_keys($this->supported_ciphers) : array_values($this->supported_ciphers);
}
/**
* Return a list of authentications supported by SSH1 server.
*
* Just because a cipher is supported by an SSH1 server doesn't mean it's supported by this library. If $raw_output
* is set to true, returns, instead, an array of constants. ie. instead of array('password authentication'), you'll
* get array(self::AUTH_PASSWORD).
*
* @param bool $raw_output
* @return array
* @access public
*/
function getSupportedAuthentications($raw_output = false)
{
return $raw_output ? array_keys($this->supported_authentications) : array_values($this->supported_authentications);
}
/**
* Return the server identification.
*
* @return string
* @access public
*/
function getServerIdentification()
{
return rtrim($this->server_identification);
}
/**
* Logs data packets
*
* Makes sure that only the last 1MB worth of packets will be logged
*
* @param int $protocol_flags
* @param string $message
* @access private
*/
function _append_log($protocol_flags, $message)
{
switch (NET_SSH1_LOGGING) {
// useful for benchmarks
case self::LOG_SIMPLE:
$this->protocol_flags_log[] = $protocol_flags;
break;
// the most useful log for SSH1
case self::LOG_COMPLEX:
$this->protocol_flags_log[] = $protocol_flags;
$this->_string_shift($message);
$this->log_size+= strlen($message);
$this->message_log[] = $message;
while ($this->log_size > self::LOG_MAX_SIZE) {
$this->log_size-= strlen(array_shift($this->message_log));
array_shift($this->protocol_flags_log);
}
break;
// dump the output out realtime; packets may be interspersed with non packets,
// passwords won't be filtered out and select other packets may not be correctly
// identified
case self::LOG_REALTIME:
echo "<pre>\r\n" . $this->_format_log(array($message), array($protocol_flags)) . "\r\n</pre>\r\n";
@flush();
@ob_flush();
break;
// basically the same thing as self::LOG_REALTIME with the caveat that self::LOG_REALTIME_FILE
// needs to be defined and that the resultant log file will be capped out at self::LOG_MAX_SIZE.
// the earliest part of the log file is denoted by the first <<< START >>> and is not going to necessarily
// at the beginning of the file
case self::LOG_REALTIME_FILE:
if (!isset($this->realtime_log_file)) {
// PHP doesn't seem to like using constants in fopen()
$filename = self::LOG_REALTIME_FILE;
$fp = fopen($filename, 'w');
$this->realtime_log_file = $fp;
}
if (!is_resource($this->realtime_log_file)) {
break;
}
$entry = $this->_format_log(array($message), array($protocol_flags));
if ($this->realtime_log_wrap) {
$temp = "<<< START >>>\r\n";
$entry.= $temp;
fseek($this->realtime_log_file, ftell($this->realtime_log_file) - strlen($temp));
}
$this->realtime_log_size+= strlen($entry);
if ($this->realtime_log_size > self::LOG_MAX_SIZE) {
fseek($this->realtime_log_file, 0);
$this->realtime_log_size = strlen($entry);
$this->realtime_log_wrap = true;
}
fputs($this->realtime_log_file, $entry);
}
}
}
PK ��$Z��^�pU pU ' phpseclib/phpseclib/Net/SFTP/Stream.phpnu �[��� <?php
/**
* SFTP Stream Wrapper
*
* Creates an sftp:// protocol handler that can be used with, for example, fopen(), dir(), etc.
*
* PHP version 5
*
* @category Net
* @package SFTP
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2013 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Net\SFTP;
use phpseclib\Crypt\RSA;
use phpseclib\Net\SFTP;
/**
* SFTP Stream Wrapper
*
* @package SFTP
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class Stream
{
/**
* SFTP instances
*
* Rather than re-create the connection we re-use instances if possible
*
* @var array
*/
static $instances;
/**
* SFTP instance
*
* @var object
* @access private
*/
var $sftp;
/**
* Path
*
* @var string
* @access private
*/
var $path;
/**
* Mode
*
* @var string
* @access private
*/
var $mode;
/**
* Position
*
* @var int
* @access private
*/
var $pos;
/**
* Size
*
* @var int
* @access private
*/
var $size;
/**
* Directory entries
*
* @var array
* @access private
*/
var $entries;
/**
* EOF flag
*
* @var bool
* @access private
*/
var $eof;
/**
* Context resource
*
* Technically this needs to be publically accessible so PHP can set it directly
*
* @var resource
* @access public
*/
var $context;
/**
* Notification callback function
*
* @var callable
* @access public
*/
var $notification;
/**
* Registers this class as a URL wrapper.
*
* @param string $protocol The wrapper name to be registered.
* @return bool True on success, false otherwise.
* @access public
*/
static function register($protocol = 'sftp')
{
if (in_array($protocol, stream_get_wrappers(), true)) {
return false;
}
return stream_wrapper_register($protocol, get_called_class());
}
/**
* The Constructor
*
* @access public
*/
function __construct()
{
if (defined('NET_SFTP_STREAM_LOGGING')) {
echo "__construct()\r\n";
}
}
/**
* Path Parser
*
* Extract a path from a URI and actually connect to an SSH server if appropriate
*
* If "notification" is set as a context parameter the message code for successful login is
* NET_SSH2_MSG_USERAUTH_SUCCESS. For a failed login it's NET_SSH2_MSG_USERAUTH_FAILURE.
*
* @param string $path
* @return string
* @access private
*/
function _parse_path($path)
{
$orig = $path;
extract(parse_url($path) + array('port' => 22));
if (isset($query)) {
$path.= '?' . $query;
} elseif (preg_match('/(\?|\?#)$/', $orig)) {
$path.= '?';
}
if (isset($fragment)) {
$path.= '#' . $fragment;
} elseif ($orig[strlen($orig) - 1] == '#') {
$path.= '#';
}
if (!isset($host)) {
return false;
}
if (isset($this->context)) {
$context = stream_context_get_params($this->context);
if (isset($context['notification'])) {
$this->notification = $context['notification'];
}
}
if ($host[0] == '$') {
$host = substr($host, 1);
global ${$host};
if (($$host instanceof SFTP) === false) {
return false;
}
$this->sftp = $$host;
} else {
if (isset($this->context)) {
$context = stream_context_get_options($this->context);
}
if (isset($context[$scheme]['session'])) {
$sftp = $context[$scheme]['session'];
}
if (isset($context[$scheme]['sftp'])) {
$sftp = $context[$scheme]['sftp'];
}
if (isset($sftp) && $sftp instanceof SFTP) {
$this->sftp = $sftp;
return $path;
}
if (isset($context[$scheme]['username'])) {
$user = $context[$scheme]['username'];
}
if (isset($context[$scheme]['password'])) {
$pass = $context[$scheme]['password'];
}
if (isset($context[$scheme]['privkey']) && $context[$scheme]['privkey'] instanceof RSA) {
$pass = $context[$scheme]['privkey'];
}
if (!isset($user) || !isset($pass)) {
return false;
}
// casting $pass to a string is necessary in the event that it's a \phpseclib\Crypt\RSA object
if (isset(self::$instances[$host][$port][$user][(string) $pass])) {
$this->sftp = self::$instances[$host][$port][$user][(string) $pass];
} else {
$this->sftp = new SFTP($host, $port);
$this->sftp->disableStatCache();
if (isset($this->notification) && is_callable($this->notification)) {
/* if !is_callable($this->notification) we could do this:
user_error('fopen(): failed to call user notifier', E_USER_WARNING);
the ftp wrapper gives errors like that when the notifier isn't callable.
i've opted not to do that, however, since the ftp wrapper gives the line
on which the fopen occurred as the line number - not the line that the
user_error is on.
*/
call_user_func($this->notification, STREAM_NOTIFY_CONNECT, STREAM_NOTIFY_SEVERITY_INFO, '', 0, 0, 0);
call_user_func($this->notification, STREAM_NOTIFY_AUTH_REQUIRED, STREAM_NOTIFY_SEVERITY_INFO, '', 0, 0, 0);
if (!$this->sftp->login($user, $pass)) {
call_user_func($this->notification, STREAM_NOTIFY_AUTH_RESULT, STREAM_NOTIFY_SEVERITY_ERR, 'Login Failure', NET_SSH2_MSG_USERAUTH_FAILURE, 0, 0);
return false;
}
call_user_func($this->notification, STREAM_NOTIFY_AUTH_RESULT, STREAM_NOTIFY_SEVERITY_INFO, 'Login Success', NET_SSH2_MSG_USERAUTH_SUCCESS, 0, 0);
} else {
if (!$this->sftp->login($user, $pass)) {
return false;
}
}
self::$instances[$host][$port][$user][(string) $pass] = $this->sftp;
}
}
return $path;
}
/**
* Opens file or URL
*
* @param string $path
* @param string $mode
* @param int $options
* @param string $opened_path
* @return bool
* @access public
*/
function _stream_open($path, $mode, $options, &$opened_path)
{
$path = $this->_parse_path($path);
if ($path === false) {
return false;
}
$this->path = $path;
$this->size = $this->sftp->size($path);
$this->mode = preg_replace('#[bt]$#', '', $mode);
$this->eof = false;
if ($this->size === false) {
if ($this->mode[0] == 'r') {
return false;
} else {
$this->sftp->touch($path);
$this->size = 0;
}
} else {
switch ($this->mode[0]) {
case 'x':
return false;
case 'w':
$this->sftp->truncate($path, 0);
$this->size = 0;
}
}
$this->pos = $this->mode[0] != 'a' ? 0 : $this->size;
return true;
}
/**
* Read from stream
*
* @param int $count
* @return mixed
* @access public
*/
function _stream_read($count)
{
switch ($this->mode) {
case 'w':
case 'a':
case 'x':
case 'c':
return false;
}
// commented out because some files - eg. /dev/urandom - will say their size is 0 when in fact it's kinda infinite
//if ($this->pos >= $this->size) {
// $this->eof = true;
// return false;
//}
$result = $this->sftp->get($this->path, false, $this->pos, $count);
if (isset($this->notification) && is_callable($this->notification)) {
if ($result === false) {
call_user_func($this->notification, STREAM_NOTIFY_FAILURE, STREAM_NOTIFY_SEVERITY_ERR, $this->sftp->getLastSFTPError(), NET_SFTP_OPEN, 0, 0);
return 0;
}
// seems that PHP calls stream_read in 8k chunks
call_user_func($this->notification, STREAM_NOTIFY_PROGRESS, STREAM_NOTIFY_SEVERITY_INFO, '', 0, strlen($result), $this->size);
}
if (empty($result)) { // ie. false or empty string
$this->eof = true;
return false;
}
$this->pos+= strlen($result);
return $result;
}
/**
* Write to stream
*
* @param string $data
* @return mixed
* @access public
*/
function _stream_write($data)
{
switch ($this->mode) {
case 'r':
return false;
}
$result = $this->sftp->put($this->path, $data, SFTP::SOURCE_STRING, $this->pos);
if (isset($this->notification) && is_callable($this->notification)) {
if (!$result) {
call_user_func($this->notification, STREAM_NOTIFY_FAILURE, STREAM_NOTIFY_SEVERITY_ERR, $this->sftp->getLastSFTPError(), NET_SFTP_OPEN, 0, 0);
return 0;
}
// seems that PHP splits up strings into 8k blocks before calling stream_write
call_user_func($this->notification, STREAM_NOTIFY_PROGRESS, STREAM_NOTIFY_SEVERITY_INFO, '', 0, strlen($data), strlen($data));
}
if ($result === false) {
return false;
}
$this->pos+= strlen($data);
if ($this->pos > $this->size) {
$this->size = $this->pos;
}
$this->eof = false;
return strlen($data);
}
/**
* Retrieve the current position of a stream
*
* @return int
* @access public
*/
function _stream_tell()
{
return $this->pos;
}
/**
* Tests for end-of-file on a file pointer
*
* In my testing there are four classes functions that normally effect the pointer:
* fseek, fputs / fwrite, fgets / fread and ftruncate.
*
* Only fgets / fread, however, results in feof() returning true. do fputs($fp, 'aaa') on a blank file and feof()
* will return false. do fread($fp, 1) and feof() will then return true. do fseek($fp, 10) on ablank file and feof()
* will return false. do fread($fp, 1) and feof() will then return true.
*
* @return bool
* @access public
*/
function _stream_eof()
{
return $this->eof;
}
/**
* Seeks to specific location in a stream
*
* @param int $offset
* @param int $whence
* @return bool
* @access public
*/
function _stream_seek($offset, $whence)
{
switch ($whence) {
case SEEK_SET:
if ($offset < 0) {
return false;
}
break;
case SEEK_CUR:
$offset+= $this->pos;
break;
case SEEK_END:
$offset+= $this->size;
}
$this->pos = $offset;
$this->eof = false;
return true;
}
/**
* Change stream options
*
* @param string $path
* @param int $option
* @param mixed $var
* @return bool
* @access public
*/
function _stream_metadata($path, $option, $var)
{
$path = $this->_parse_path($path);
if ($path === false) {
return false;
}
// stream_metadata was introduced in PHP 5.4.0 but as of 5.4.11 the constants haven't been defined
// see http://www.php.net/streamwrapper.stream-metadata and https://bugs.php.net/64246
// and https://github.com/php/php-src/blob/master/main/php_streams.h#L592
switch ($option) {
case 1: // PHP_STREAM_META_TOUCH
$time = isset($var[0]) ? $var[0] : null;
$atime = isset($var[1]) ? $var[1] : null;
return $this->sftp->touch($path, $time, $atime);
case 2: // PHP_STREAM_OWNER_NAME
case 3: // PHP_STREAM_GROUP_NAME
return false;
case 4: // PHP_STREAM_META_OWNER
return $this->sftp->chown($path, $var);
case 5: // PHP_STREAM_META_GROUP
return $this->sftp->chgrp($path, $var);
case 6: // PHP_STREAM_META_ACCESS
return $this->sftp->chmod($path, $var) !== false;
}
}
/**
* Retrieve the underlaying resource
*
* @param int $cast_as
* @return resource
* @access public
*/
function _stream_cast($cast_as)
{
return $this->sftp->fsock;
}
/**
* Advisory file locking
*
* @param int $operation
* @return bool
* @access public
*/
function _stream_lock($operation)
{
return false;
}
/**
* Renames a file or directory
*
* Attempts to rename oldname to newname, moving it between directories if necessary.
* If newname exists, it will be overwritten. This is a departure from what \phpseclib\Net\SFTP
* does.
*
* @param string $path_from
* @param string $path_to
* @return bool
* @access public
*/
function _rename($path_from, $path_to)
{
$path1 = parse_url($path_from);
$path2 = parse_url($path_to);
unset($path1['path'], $path2['path']);
if ($path1 != $path2) {
return false;
}
$path_from = $this->_parse_path($path_from);
$path_to = parse_url($path_to);
if ($path_from === false) {
return false;
}
$path_to = $path_to['path']; // the $component part of parse_url() was added in PHP 5.1.2
// "It is an error if there already exists a file with the name specified by newpath."
// -- http://tools.ietf.org/html/draft-ietf-secsh-filexfer-02#section-6.5
if (!$this->sftp->rename($path_from, $path_to)) {
if ($this->sftp->stat($path_to)) {
return $this->sftp->delete($path_to, true) && $this->sftp->rename($path_from, $path_to);
}
return false;
}
return true;
}
/**
* Open directory handle
*
* The only $options is "whether or not to enforce safe_mode (0x04)". Since safe mode was deprecated in 5.3 and
* removed in 5.4 I'm just going to ignore it.
*
* Also, nlist() is the best that this function is realistically going to be able to do. When an SFTP client
* sends a SSH_FXP_READDIR packet you don't generally get info on just one file but on multiple files. Quoting
* the SFTP specs:
*
* The SSH_FXP_NAME response has the following format:
*
* uint32 id
* uint32 count
* repeats count times:
* string filename
* string longname
* ATTRS attrs
*
* @param string $path
* @param int $options
* @return bool
* @access public
*/
function _dir_opendir($path, $options)
{
$path = $this->_parse_path($path);
if ($path === false) {
return false;
}
$this->pos = 0;
$this->entries = $this->sftp->nlist($path);
return $this->entries !== false;
}
/**
* Read entry from directory handle
*
* @return mixed
* @access public
*/
function _dir_readdir()
{
if (isset($this->entries[$this->pos])) {
return $this->entries[$this->pos++];
}
return false;
}
/**
* Rewind directory handle
*
* @return bool
* @access public
*/
function _dir_rewinddir()
{
$this->pos = 0;
return true;
}
/**
* Close directory handle
*
* @return bool
* @access public
*/
function _dir_closedir()
{
return true;
}
/**
* Create a directory
*
* Only valid $options is STREAM_MKDIR_RECURSIVE
*
* @param string $path
* @param int $mode
* @param int $options
* @return bool
* @access public
*/
function _mkdir($path, $mode, $options)
{
$path = $this->_parse_path($path);
if ($path === false) {
return false;
}
return $this->sftp->mkdir($path, $mode, $options & STREAM_MKDIR_RECURSIVE);
}
/**
* Removes a directory
*
* Only valid $options is STREAM_MKDIR_RECURSIVE per <http://php.net/streamwrapper.rmdir>, however,
* <http://php.net/rmdir> does not have a $recursive parameter as mkdir() does so I don't know how
* STREAM_MKDIR_RECURSIVE is supposed to be set. Also, when I try it out with rmdir() I get 8 as
* $options. What does 8 correspond to?
*
* @param string $path
* @param int $options
* @return bool
* @access public
*/
function _rmdir($path, $options)
{
$path = $this->_parse_path($path);
if ($path === false) {
return false;
}
return $this->sftp->rmdir($path);
}
/**
* Flushes the output
*
* See <http://php.net/fflush>. Always returns true because \phpseclib\Net\SFTP doesn't cache stuff before writing
*
* @return bool
* @access public
*/
function _stream_flush()
{
return true;
}
/**
* Retrieve information about a file resource
*
* @return mixed
* @access public
*/
function _stream_stat()
{
$results = $this->sftp->stat($this->path);
if ($results === false) {
return false;
}
return $results;
}
/**
* Delete a file
*
* @param string $path
* @return bool
* @access public
*/
function _unlink($path)
{
$path = $this->_parse_path($path);
if ($path === false) {
return false;
}
return $this->sftp->delete($path, false);
}
/**
* Retrieve information about a file
*
* Ignores the STREAM_URL_STAT_QUIET flag because the entirety of \phpseclib\Net\SFTP\Stream is quiet by default
* might be worthwhile to reconstruct bits 12-16 (ie. the file type) if mode doesn't have them but we'll
* cross that bridge when and if it's reached
*
* @param string $path
* @param int $flags
* @return mixed
* @access public
*/
function _url_stat($path, $flags)
{
$path = $this->_parse_path($path);
if ($path === false) {
return false;
}
$results = $flags & STREAM_URL_STAT_LINK ? $this->sftp->lstat($path) : $this->sftp->stat($path);
if ($results === false) {
return false;
}
return $results;
}
/**
* Truncate stream
*
* @param int $new_size
* @return bool
* @access public
*/
function _stream_truncate($new_size)
{
if (!$this->sftp->truncate($this->path, $new_size)) {
return false;
}
$this->eof = false;
$this->size = $new_size;
return true;
}
/**
* Change stream options
*
* STREAM_OPTION_WRITE_BUFFER isn't supported for the same reason stream_flush isn't.
* The other two aren't supported because of limitations in \phpseclib\Net\SFTP.
*
* @param int $option
* @param int $arg1
* @param int $arg2
* @return bool
* @access public
*/
function _stream_set_option($option, $arg1, $arg2)
{
return false;
}
/**
* Close an resource
*
* @access public
*/
function _stream_close()
{
}
/**
* __call Magic Method
*
* When you're utilizing an SFTP stream you're not calling the methods in this class directly - PHP is calling them for you.
* Which kinda begs the question... what methods is PHP calling and what parameters is it passing to them? This function
* lets you figure that out.
*
* If NET_SFTP_STREAM_LOGGING is defined all calls will be output on the screen and then (regardless of whether or not
* NET_SFTP_STREAM_LOGGING is enabled) the parameters will be passed through to the appropriate method.
*
* @param string $name
* @param array $arguments
* @return mixed
* @access public
*/
function __call($name, $arguments)
{
if (defined('NET_SFTP_STREAM_LOGGING')) {
echo $name . '(';
$last = count($arguments) - 1;
foreach ($arguments as $i => $argument) {
var_export($argument);
if ($i != $last) {
echo ',';
}
}
echo ")\r\n";
}
$name = '_' . $name;
if (!method_exists($this, $name)) {
return false;
}
return call_user_func_array(array($this, $name), $arguments);
}
}
PK ��$Z>���h� h� phpseclib/phpseclib/Net/SFTP.phpnu �[��� <?php
/**
* Pure-PHP implementation of SFTP.
*
* PHP version 5
*
* Supports SFTPv2/3/4/5/6. Defaults to v3.
*
* The API for this library is modeled after the API from PHP's {@link http://php.net/book.ftp FTP extension}.
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $sftp = new \phpseclib\Net\SFTP('www.domain.tld');
* if (!$sftp->login('username', 'password')) {
* exit('Login Failed');
* }
*
* echo $sftp->pwd() . "\r\n";
* $sftp->put('filename.ext', 'hello, world!');
* print_r($sftp->nlist());
* ?>
* </code>
*
* @category Net
* @package SFTP
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2009 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Net;
/**
* Pure-PHP implementations of SFTP.
*
* @package SFTP
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class SFTP extends SSH2
{
/**
* SFTP channel constant
*
* \phpseclib\Net\SSH2::exec() uses 0 and \phpseclib\Net\SSH2::read() / \phpseclib\Net\SSH2::write() use 1.
*
* @see \phpseclib\Net\SSH2::_send_channel_packet()
* @see \phpseclib\Net\SSH2::_get_channel_packet()
* @access private
*/
const CHANNEL = 0x100;
/**#@+
* @access public
* @see \phpseclib\Net\SFTP::put()
*/
/**
* Reads data from a local file.
*/
const SOURCE_LOCAL_FILE = 1;
/**
* Reads data from a string.
*/
// this value isn't really used anymore but i'm keeping it reserved for historical reasons
const SOURCE_STRING = 2;
/**
* Reads data from callback:
* function callback($length) returns string to proceed, null for EOF
*/
const SOURCE_CALLBACK = 16;
/**
* Resumes an upload
*/
const RESUME = 4;
/**
* Append a local file to an already existing remote file
*/
const RESUME_START = 8;
/**#@-*/
/**
* Packet Types
*
* @see self::__construct()
* @var array
* @access private
*/
var $packet_types = array();
/**
* Status Codes
*
* @see self::__construct()
* @var array
* @access private
*/
var $status_codes = array();
/**
* The Request ID
*
* The request ID exists in the off chance that a packet is sent out-of-order. Of course, this library doesn't support
* concurrent actions, so it's somewhat academic, here.
*
* @var boolean
* @see self::_send_sftp_packet()
* @access private
*/
var $use_request_id = false;
/**
* The Packet Type
*
* The request ID exists in the off chance that a packet is sent out-of-order. Of course, this library doesn't support
* concurrent actions, so it's somewhat academic, here.
*
* @var int
* @see self::_get_sftp_packet()
* @access private
*/
var $packet_type = -1;
/**
* Packet Buffer
*
* @var string
* @see self::_get_sftp_packet()
* @access private
*/
var $packet_buffer = '';
/**
* Extensions supported by the server
*
* @var array
* @see self::_initChannel()
* @access private
*/
var $extensions = array();
/**
* Server SFTP version
*
* @var int
* @see self::_initChannel()
* @access private
*/
var $version;
/**
* Default Server SFTP version
*
* @var int
* @see self::_initChannel()
* @access private
*/
var $defaultVersion;
/**
* Preferred SFTP version
*
* @var int
* @see self::_initChannel()
* @access private
*/
var $preferredVersion = 3;
/**
* Current working directory
*
* @var string
* @see self::realpath()
* @see self::chdir()
* @access private
*/
var $pwd = false;
/**
* Packet Type Log
*
* @see self::getLog()
* @var array
* @access private
*/
var $packet_type_log = array();
/**
* Packet Log
*
* @see self::getLog()
* @var array
* @access private
*/
var $packet_log = array();
/**
* Error information
*
* @see self::getSFTPErrors()
* @see self::getLastSFTPError()
* @var array
* @access private
*/
var $sftp_errors = array();
/**
* Stat Cache
*
* Rather than always having to open a directory and close it immediately there after to see if a file is a directory
* we'll cache the results.
*
* @see self::_update_stat_cache()
* @see self::_remove_from_stat_cache()
* @see self::_query_stat_cache()
* @var array
* @access private
*/
var $stat_cache = array();
/**
* Max SFTP Packet Size
*
* @see self::__construct()
* @see self::get()
* @var array
* @access private
*/
var $max_sftp_packet;
/**
* Stat Cache Flag
*
* @see self::disableStatCache()
* @see self::enableStatCache()
* @var bool
* @access private
*/
var $use_stat_cache = true;
/**
* Sort Options
*
* @see self::_comparator()
* @see self::setListOrder()
* @var array
* @access private
*/
var $sortOptions = array();
/**
* Canonicalization Flag
*
* Determines whether or not paths should be canonicalized before being
* passed on to the remote server.
*
* @see self::enablePathCanonicalization()
* @see self::disablePathCanonicalization()
* @see self::realpath()
* @var bool
* @access private
*/
var $canonicalize_paths = true;
/**
* Request Buffers
*
* @see self::_get_sftp_packet()
* @var array
* @access private
*/
var $requestBuffer = array();
/**
* Preserve timestamps on file downloads / uploads
*
* @see self::get()
* @see self::put()
* @var bool
* @access private
*/
var $preserveTime = false;
/**
* Arbitrary Length Packets Flag
*
* Determines whether or not packets of any length should be allowed,
* in cases where the server chooses the packet length (such as
* directory listings). By default, packets are only allowed to be
* 256 * 1024 bytes (SFTP_MAX_MSG_LENGTH from OpenSSH's sftp-common.h)
*
* @see self::enableArbitraryLengthPackets()
* @see self::_get_sftp_packet()
* @var bool
* @access private
*/
var $allow_arbitrary_length_packets = false;
/**
* Was the last packet due to the channels being closed or not?
*
* @see self::get()
* @see self::get_sftp_packet()
* @var bool
* @access private
*/
var $channel_close = false;
/**
* Has the SFTP channel been partially negotiated?
*
* @var bool
* @access private
*/
var $partial_init = false;
/**
* Default Constructor.
*
* Connects to an SFTP server
*
* @param string $host
* @param int $port
* @param int $timeout
* @return \phpseclib\Net\SFTP
* @access public
*/
function __construct($host, $port = 22, $timeout = 10)
{
parent::__construct($host, $port, $timeout);
$this->max_sftp_packet = 1 << 15;
$this->packet_types = array(
1 => 'NET_SFTP_INIT',
2 => 'NET_SFTP_VERSION',
3 => 'NET_SFTP_OPEN',
4 => 'NET_SFTP_CLOSE',
5 => 'NET_SFTP_READ',
6 => 'NET_SFTP_WRITE',
7 => 'NET_SFTP_LSTAT',
9 => 'NET_SFTP_SETSTAT',
10 => 'NET_SFTP_FSETSTAT',
11 => 'NET_SFTP_OPENDIR',
12 => 'NET_SFTP_READDIR',
13 => 'NET_SFTP_REMOVE',
14 => 'NET_SFTP_MKDIR',
15 => 'NET_SFTP_RMDIR',
16 => 'NET_SFTP_REALPATH',
17 => 'NET_SFTP_STAT',
18 => 'NET_SFTP_RENAME',
19 => 'NET_SFTP_READLINK',
20 => 'NET_SFTP_SYMLINK',
21 => 'NET_SFTP_LINK',
101=> 'NET_SFTP_STATUS',
102=> 'NET_SFTP_HANDLE',
103=> 'NET_SFTP_DATA',
104=> 'NET_SFTP_NAME',
105=> 'NET_SFTP_ATTRS',
200=> 'NET_SFTP_EXTENDED'
);
$this->status_codes = array(
0 => 'NET_SFTP_STATUS_OK',
1 => 'NET_SFTP_STATUS_EOF',
2 => 'NET_SFTP_STATUS_NO_SUCH_FILE',
3 => 'NET_SFTP_STATUS_PERMISSION_DENIED',
4 => 'NET_SFTP_STATUS_FAILURE',
5 => 'NET_SFTP_STATUS_BAD_MESSAGE',
6 => 'NET_SFTP_STATUS_NO_CONNECTION',
7 => 'NET_SFTP_STATUS_CONNECTION_LOST',
8 => 'NET_SFTP_STATUS_OP_UNSUPPORTED',
9 => 'NET_SFTP_STATUS_INVALID_HANDLE',
10 => 'NET_SFTP_STATUS_NO_SUCH_PATH',
11 => 'NET_SFTP_STATUS_FILE_ALREADY_EXISTS',
12 => 'NET_SFTP_STATUS_WRITE_PROTECT',
13 => 'NET_SFTP_STATUS_NO_MEDIA',
14 => 'NET_SFTP_STATUS_NO_SPACE_ON_FILESYSTEM',
15 => 'NET_SFTP_STATUS_QUOTA_EXCEEDED',
16 => 'NET_SFTP_STATUS_UNKNOWN_PRINCIPAL',
17 => 'NET_SFTP_STATUS_LOCK_CONFLICT',
18 => 'NET_SFTP_STATUS_DIR_NOT_EMPTY',
19 => 'NET_SFTP_STATUS_NOT_A_DIRECTORY',
20 => 'NET_SFTP_STATUS_INVALID_FILENAME',
21 => 'NET_SFTP_STATUS_LINK_LOOP',
22 => 'NET_SFTP_STATUS_CANNOT_DELETE',
23 => 'NET_SFTP_STATUS_INVALID_PARAMETER',
24 => 'NET_SFTP_STATUS_FILE_IS_A_DIRECTORY',
25 => 'NET_SFTP_STATUS_BYTE_RANGE_LOCK_CONFLICT',
26 => 'NET_SFTP_STATUS_BYTE_RANGE_LOCK_REFUSED',
27 => 'NET_SFTP_STATUS_DELETE_PENDING',
28 => 'NET_SFTP_STATUS_FILE_CORRUPT',
29 => 'NET_SFTP_STATUS_OWNER_INVALID',
30 => 'NET_SFTP_STATUS_GROUP_INVALID',
31 => 'NET_SFTP_STATUS_NO_MATCHING_BYTE_RANGE_LOCK'
);
// http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-7.1
// the order, in this case, matters quite a lot - see \phpseclib\Net\SFTP::_parseAttributes() to understand why
$this->attributes = array(
0x00000001 => 'NET_SFTP_ATTR_SIZE',
0x00000002 => 'NET_SFTP_ATTR_UIDGID', // defined in SFTPv3, removed in SFTPv4+
0x00000080 => 'NET_SFTP_ATTR_OWNERGROUP', // defined in SFTPv4+
0x00000004 => 'NET_SFTP_ATTR_PERMISSIONS',
0x00000008 => 'NET_SFTP_ATTR_ACCESSTIME',
0x00000010 => 'NET_SFTP_ATTR_CREATETIME', // SFTPv4+
0x00000020 => 'NET_SFTP_ATTR_MODIFYTIME',
0x00000040 => 'NET_SFTP_ATTR_ACL',
0x00000100 => 'NET_SFTP_ATTR_SUBSECOND_TIMES',
0x00000200 => 'NET_SFTP_ATTR_BITS', // SFTPv5+
0x00000400 => 'NET_SFTP_ATTR_ALLOCATION_SIZE', // SFTPv6+
0x00000800 => 'NET_SFTP_ATTR_TEXT_HINT',
0x00001000 => 'NET_SFTP_ATTR_MIME_TYPE',
0x00002000 => 'NET_SFTP_ATTR_LINK_COUNT',
0x00004000 => 'NET_SFTP_ATTR_UNTRANSLATED_NAME',
0x00008000 => 'NET_SFTP_ATTR_CTIME',
// 0x80000000 will yield a floating point on 32-bit systems and converting floating points to integers
// yields inconsistent behavior depending on how php is compiled. so we left shift -1 (which, in
// two's compliment, consists of all 1 bits) by 31. on 64-bit systems this'll yield 0xFFFFFFFF80000000.
// that's not a problem, however, and 'anded' and a 32-bit number, as all the leading 1 bits are ignored.
(PHP_INT_SIZE == 4 ? -1 : 0xFFFFFFFF) => 'NET_SFTP_ATTR_EXTENDED'
);
$this->open_flags = array(
0x00000001 => 'NET_SFTP_OPEN_READ',
0x00000002 => 'NET_SFTP_OPEN_WRITE',
0x00000004 => 'NET_SFTP_OPEN_APPEND',
0x00000008 => 'NET_SFTP_OPEN_CREATE',
0x00000010 => 'NET_SFTP_OPEN_TRUNCATE',
0x00000020 => 'NET_SFTP_OPEN_EXCL',
0x00000040 => 'NET_SFTP_OPEN_TEXT' // defined in SFTPv4
);
// SFTPv5+ changed the flags up:
// https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-8.1.1.3
$this->open_flags5 = array(
// when SSH_FXF_ACCESS_DISPOSITION is a 3 bit field that controls how the file is opened
0x00000000 => 'NET_SFTP_OPEN_CREATE_NEW',
0x00000001 => 'NET_SFTP_OPEN_CREATE_TRUNCATE',
0x00000002 => 'NET_SFTP_OPEN_OPEN_EXISTING',
0x00000003 => 'NET_SFTP_OPEN_OPEN_OR_CREATE',
0x00000004 => 'NET_SFTP_OPEN_TRUNCATE_EXISTING',
// the rest of the flags are not supported
0x00000008 => 'NET_SFTP_OPEN_APPEND_DATA', // "the offset field of SS_FXP_WRITE requests is ignored"
0x00000010 => 'NET_SFTP_OPEN_APPEND_DATA_ATOMIC',
0x00000020 => 'NET_SFTP_OPEN_TEXT_MODE',
0x00000040 => 'NET_SFTP_OPEN_BLOCK_READ',
0x00000080 => 'NET_SFTP_OPEN_BLOCK_WRITE',
0x00000100 => 'NET_SFTP_OPEN_BLOCK_DELETE',
0x00000200 => 'NET_SFTP_OPEN_BLOCK_ADVISORY',
0x00000400 => 'NET_SFTP_OPEN_NOFOLLOW',
0x00000800 => 'NET_SFTP_OPEN_DELETE_ON_CLOSE',
0x00001000 => 'NET_SFTP_OPEN_ACCESS_AUDIT_ALARM_INFO',
0x00002000 => 'NET_SFTP_OPEN_ACCESS_BACKUP',
0x00004000 => 'NET_SFTP_OPEN_BACKUP_STREAM',
0x00008000 => 'NET_SFTP_OPEN_OVERRIDE_OWNER',
);
// http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-5.2
// see \phpseclib\Net\SFTP::_parseLongname() for an explanation
$this->file_types = array(
1 => 'NET_SFTP_TYPE_REGULAR',
2 => 'NET_SFTP_TYPE_DIRECTORY',
3 => 'NET_SFTP_TYPE_SYMLINK',
4 => 'NET_SFTP_TYPE_SPECIAL',
5 => 'NET_SFTP_TYPE_UNKNOWN',
// the followin types were first defined for use in SFTPv5+
// http://tools.ietf.org/html/draft-ietf-secsh-filexfer-05#section-5.2
6 => 'NET_SFTP_TYPE_SOCKET',
7 => 'NET_SFTP_TYPE_CHAR_DEVICE',
8 => 'NET_SFTP_TYPE_BLOCK_DEVICE',
9 => 'NET_SFTP_TYPE_FIFO'
);
$this->_define_array(
$this->packet_types,
$this->status_codes,
$this->attributes,
$this->open_flags,
$this->open_flags5,
$this->file_types
);
if (!defined('NET_SFTP_QUEUE_SIZE')) {
define('NET_SFTP_QUEUE_SIZE', 32);
}
if (!defined('NET_SFTP_UPLOAD_QUEUE_SIZE')) {
define('NET_SFTP_UPLOAD_QUEUE_SIZE', 1024);
}
}
/**
* Check a few things before SFTP functions are called
*
* @return bool
* @access public
*/
function _precheck()
{
if (!($this->bitmap & SSH2::MASK_LOGIN)) {
return false;
}
if ($this->pwd === false) {
return $this->_init_sftp_connection();
}
return true;
}
/**
* Partially initialize an SFTP connection
*
* @return bool
* @access public
*/
function _partial_init_sftp_connection()
{
$this->window_size_server_to_client[self::CHANNEL] = $this->window_size;
$packet = pack(
'CNa*N3',
NET_SSH2_MSG_CHANNEL_OPEN,
strlen('session'),
'session',
self::CHANNEL,
$this->window_size,
0x4000
);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$this->channel_status[self::CHANNEL] = NET_SSH2_MSG_CHANNEL_OPEN;
$response = $this->_get_channel_packet(self::CHANNEL, true);
if ($response === false) {
return false;
} elseif ($response === true && $this->isTimeout()) {
return false;
}
$packet = pack(
'CNNa*CNa*',
NET_SSH2_MSG_CHANNEL_REQUEST,
$this->server_channels[self::CHANNEL],
strlen('subsystem'),
'subsystem',
1,
strlen('sftp'),
'sftp'
);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$this->channel_status[self::CHANNEL] = NET_SSH2_MSG_CHANNEL_REQUEST;
$response = $this->_get_channel_packet(self::CHANNEL, true);
if ($response === false) {
// from PuTTY's psftp.exe
$command = "test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server\n" .
"test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server\n" .
"exec sftp-server";
// we don't do $this->exec($command, false) because exec() operates on a different channel and plus the SSH_MSG_CHANNEL_OPEN that exec() does
// is redundant
$packet = pack(
'CNNa*CNa*',
NET_SSH2_MSG_CHANNEL_REQUEST,
$this->server_channels[self::CHANNEL],
strlen('exec'),
'exec',
1,
strlen($command),
$command
);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$this->channel_status[self::CHANNEL] = NET_SSH2_MSG_CHANNEL_REQUEST;
$response = $this->_get_channel_packet(self::CHANNEL, true);
if ($response === false) {
return false;
}
} elseif ($response === true && $this->isTimeout()) {
return false;
}
$this->channel_status[self::CHANNEL] = NET_SSH2_MSG_CHANNEL_DATA;
if (!$this->_send_sftp_packet(NET_SFTP_INIT, "\0\0\0\3")) {
return false;
}
$response = $this->_get_sftp_packet();
if ($this->packet_type != NET_SFTP_VERSION) {
user_error('Expected SSH_FXP_VERSION');
return false;
}
$this->use_request_id = true;
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nversion', $this->_string_shift($response, 4)));
$this->defaultVersion = $version;
while (!empty($response)) {
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$key = $this->_string_shift($response, $length);
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$value = $this->_string_shift($response, $length);
$this->extensions[$key] = $value;
}
$this->partial_init = true;
return true;
}
/**
* (Re)initializes the SFTP channel
*
* @return bool
* @access private
*/
function _init_sftp_connection()
{
if (!$this->partial_init && !$this->_partial_init_sftp_connection()) {
return false;
}
/*
A Note on SFTPv4/5/6 support:
<http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-5.1> states the following:
"If the client wishes to interoperate with servers that support noncontiguous version
numbers it SHOULD send '3'"
Given that the server only sends its version number after the client has already done so, the above
seems to be suggesting that v3 should be the default version. This makes sense given that v3 is the
most popular.
<http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-5.5> states the following;
"If the server did not send the "versions" extension, or the version-from-list was not included, the
server MAY send a status response describing the failure, but MUST then close the channel without
processing any further requests."
So what do you do if you have a client whose initial SSH_FXP_INIT packet says it implements v3 and
a server whose initial SSH_FXP_VERSION reply says it implements v4 and only v4? If it only implements
v4, the "versions" extension is likely not going to have been sent so version re-negotiation as discussed
in draft-ietf-secsh-filexfer-13 would be quite impossible. As such, what \phpseclib\Net\SFTP would do is close the
channel and reopen it with a new and updated SSH_FXP_INIT packet.
*/
$this->version = $this->defaultVersion;
if (isset($this->extensions['versions']) && (!$this->preferredVersion || $this->preferredVersion != $this->version)) {
$versions = explode(',', $this->extensions['versions']);
$supported = array(6, 5, 4);
if ($this->preferredVersion) {
$supported = array_diff($supported, array($this->preferredVersion));
array_unshift($supported, $this->preferredVersion);
}
foreach ($supported as $ver) {
if (in_array($ver, $versions)) {
if ($ver === $this->version) {
break;
}
$this->version = (int) $ver;
$packet = pack('Na*Na*', strlen('version-select'), 'version-select', strlen($ver), $ver);
if (!$this->_send_sftp_packet(NET_SFTP_EXTENDED, $packet)) {
return false;
}
$response = $this->_get_sftp_packet();
if ($this->packet_type != NET_SFTP_STATUS) {
user_error('Expected SSH_FXP_STATUS');
return false;
}
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nstatus', $this->_string_shift($response, 4)));
if ($status != NET_SFTP_STATUS_OK) {
$this->_logError($response, $status);
return false;
}
break;
}
}
}
/*
SFTPv4+ defines a 'newline' extension. SFTPv3 seems to have unofficial support for it via 'newline@vandyke.com',
however, I'm not sure what 'newline@vandyke.com' is supposed to do (the fact that it's unofficial means that it's
not in the official SFTPv3 specs) and 'newline@vandyke.com' / 'newline' are likely not drop-in substitutes for
one another due to the fact that 'newline' comes with a SSH_FXF_TEXT bitmask whereas it seems unlikely that
'newline@vandyke.com' would.
*/
/*
if (isset($this->extensions['newline@vandyke.com'])) {
$this->extensions['newline'] = $this->extensions['newline@vandyke.com'];
unset($this->extensions['newline@vandyke.com']);
}
*/
if ($this->version < 2 || $this->version > 6) {
return false;
}
$this->pwd = true;
$this->pwd = $this->_realpath('.');
if ($this->pwd === false) {
if (!$this->canonicalize_paths) {
user_error('Unable to canonicalize current working directory');
return false;
}
$this->canonicalize_paths = false;
$this->_reset_connection(NET_SSH2_DISCONNECT_CONNECTION_LOST);
}
$this->_update_stat_cache($this->pwd, array());
return true;
}
/**
* Disable the stat cache
*
* @access public
*/
function disableStatCache()
{
$this->use_stat_cache = false;
}
/**
* Enable the stat cache
*
* @access public
*/
function enableStatCache()
{
$this->use_stat_cache = true;
}
/**
* Clear the stat cache
*
* @access public
*/
function clearStatCache()
{
$this->stat_cache = array();
}
/**
* Enable path canonicalization
*
* @access public
*/
function enablePathCanonicalization()
{
$this->canonicalize_paths = true;
}
/**
* Disable path canonicalization
*
* If this is enabled then $sftp->pwd() will not return the canonicalized absolute path
*
* @access public
*/
function disablePathCanonicalization()
{
$this->canonicalize_paths = false;
}
/**
* Enable arbitrary length packets
*
* @access public
*/
function enableArbitraryLengthPackets()
{
$this->allow_arbitrary_length_packets = true;
}
/**
* Disable arbitrary length packets
*
* @access public
*/
function disableArbitraryLengthPackets()
{
$this->allow_arbitrary_length_packets = false;
}
/**
* Returns the current directory name
*
* @return mixed
* @access public
*/
function pwd()
{
if (!$this->_precheck()) {
return false;
}
return $this->pwd;
}
/**
* Logs errors
*
* @param string $response
* @param int $status
* @access public
*/
function _logError($response, $status = -1)
{
if ($status == -1) {
if (strlen($response) < 4) {
return;
}
extract(unpack('Nstatus', $this->_string_shift($response, 4)));
}
$error = $this->status_codes[$status];
if ($this->version > 2 || strlen($response) < 4) {
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$this->sftp_errors[] = $error . ': ' . $this->_string_shift($response, $length);
} else {
$this->sftp_errors[] = $error;
}
}
/**
* Returns canonicalized absolute pathname
*
* realpath() expands all symbolic links and resolves references to '/./', '/../' and extra '/' characters in the input
* path and returns the canonicalized absolute pathname.
*
* @param string $path
* @return mixed
* @access public
*/
function realpath($path)
{
if (!$this->_precheck()) {
return false;
}
return $this->_realpath($path);
}
/**
* Canonicalize the Server-Side Path Name
*
* SFTP doesn't provide a mechanism by which the current working directory can be changed, so we'll emulate it. Returns
* the absolute (canonicalized) path.
*
* If canonicalize_paths has been disabled using disablePathCanonicalization(), $path is returned as-is.
*
* @see self::chdir()
* @see self::disablePathCanonicalization()
* @param string $path
* @return mixed
* @access private
*/
function _realpath($path)
{
if (!$this->canonicalize_paths) {
if ($this->pwd === true) {
return '.';
}
if (!strlen($path) || $path[0] != '/') {
$path = $this->pwd . '/' . $path;
}
$parts = explode('/', $path);
$afterPWD = $beforePWD = [];
foreach ($parts as $part) {
switch ($part) {
//case '': // some SFTP servers /require/ double /'s. see https://github.com/phpseclib/phpseclib/pull/1137
case '.':
break;
case '..':
if (!empty($afterPWD)) {
array_pop($afterPWD);
} else {
$beforePWD[] = '..';
}
break;
default:
$afterPWD[] = $part;
}
}
$beforePWD = count($beforePWD) ? implode('/', $beforePWD) : '.';
return $beforePWD . '/' . implode('/', $afterPWD);
}
if ($this->pwd === true) {
// http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.9
if (!$this->_send_sftp_packet(NET_SFTP_REALPATH, pack('Na*', strlen($path), $path))) {
return false;
}
$response = $this->_get_sftp_packet();
switch ($this->packet_type) {
case NET_SFTP_NAME:
// although SSH_FXP_NAME is implemented differently in SFTPv3 than it is in SFTPv4+, the following
// should work on all SFTP versions since the only part of the SSH_FXP_NAME packet the following looks
// at is the first part and that part is defined the same in SFTP versions 3 through 6.
$this->_string_shift($response, 4); // skip over the count - it should be 1, anyway
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
return $this->_string_shift($response, $length);
case NET_SFTP_STATUS:
$this->_logError($response);
return false;
default:
return false;
}
}
if (!strlen($path) || $path[0] != '/') {
$path = $this->pwd . '/' . $path;
}
$path = explode('/', $path);
$new = array();
foreach ($path as $dir) {
if (!strlen($dir)) {
continue;
}
switch ($dir) {
case '..':
array_pop($new);
case '.':
break;
default:
$new[] = $dir;
}
}
return '/' . implode('/', $new);
}
/**
* Changes the current directory
*
* @param string $dir
* @return bool
* @access public
*/
function chdir($dir)
{
if (!$this->_precheck()) {
return false;
}
// assume current dir if $dir is empty
if ($dir === '') {
$dir = './';
// suffix a slash if needed
} elseif ($dir[strlen($dir) - 1] != '/') {
$dir.= '/';
}
$dir = $this->_realpath($dir);
// confirm that $dir is, in fact, a valid directory
if ($this->use_stat_cache && is_array($this->_query_stat_cache($dir))) {
$this->pwd = $dir;
return true;
}
// we could do a stat on the alleged $dir to see if it's a directory but that doesn't tell us
// the currently logged in user has the appropriate permissions or not. maybe you could see if
// the file's uid / gid match the currently logged in user's uid / gid but how there's no easy
// way to get those with SFTP
if (!$this->_send_sftp_packet(NET_SFTP_OPENDIR, pack('Na*', strlen($dir), $dir))) {
return false;
}
// see \phpseclib\Net\SFTP::nlist() for a more thorough explanation of the following
$response = $this->_get_sftp_packet();
switch ($this->packet_type) {
case NET_SFTP_HANDLE:
$handle = substr($response, 4);
break;
case NET_SFTP_STATUS:
$this->_logError($response);
return false;
default:
user_error('Expected SSH_FXP_HANDLE or SSH_FXP_STATUS');
return false;
}
if (!$this->_close_handle($handle)) {
return false;
}
$this->_update_stat_cache($dir, array());
$this->pwd = $dir;
return true;
}
/**
* Returns a list of files in the given directory
*
* @param string $dir
* @param bool $recursive
* @return mixed
* @access public
*/
function nlist($dir = '.', $recursive = false)
{
return $this->_nlist_helper($dir, $recursive, '');
}
/**
* Helper method for nlist
*
* @param string $dir
* @param bool $recursive
* @param string $relativeDir
* @return mixed
* @access private
*/
function _nlist_helper($dir, $recursive, $relativeDir)
{
$files = $this->_list($dir, false);
// If we get an int back, then that is an "unexpected" status.
// We do not have a file list, so return false.
if (is_int($files)) {
return false;
}
if (!$recursive || $files === false) {
return $files;
}
$result = array();
foreach ($files as $value) {
if ($value == '.' || $value == '..') {
if ($relativeDir == '') {
$result[] = $value;
}
continue;
}
if (is_array($this->_query_stat_cache($this->_realpath($dir . '/' . $value)))) {
$temp = $this->_nlist_helper($dir . '/' . $value, true, $relativeDir . $value . '/');
$temp = is_array($temp) ? $temp : array();
$result = array_merge($result, $temp);
} else {
$result[] = $relativeDir . $value;
}
}
return $result;
}
/**
* Returns a detailed list of files in the given directory
*
* @param string $dir
* @param bool $recursive
* @return mixed
* @access public
*/
function rawlist($dir = '.', $recursive = false)
{
$files = $this->_list($dir, true);
// If we get an int back, then that is an "unexpected" status.
// We do not have a file list, so return false.
if (is_int($files)) {
return false;
}
if (!$recursive || $files === false) {
return $files;
}
static $depth = 0;
foreach ($files as $key => $value) {
if ($depth != 0 && $key == '..') {
unset($files[$key]);
continue;
}
$is_directory = false;
if ($key != '.' && $key != '..') {
if ($this->use_stat_cache) {
$is_directory = is_array($this->_query_stat_cache($this->_realpath($dir . '/' . $key)));
} else {
$stat = $this->lstat($dir . '/' . $key);
$is_directory = $stat && $stat['type'] === NET_SFTP_TYPE_DIRECTORY;
}
}
if ($is_directory) {
$depth++;
$files[$key] = $this->rawlist($dir . '/' . $key, true);
$depth--;
} else {
$files[$key] = (object) $value;
}
}
return $files;
}
/**
* Reads a list, be it detailed or not, of files in the given directory
*
* @param string $dir
* @param bool $raw
* @return mixed
* @access private
*/
function _list($dir, $raw = true)
{
if (!$this->_precheck()) {
return false;
}
$dir = $this->_realpath($dir . '/');
if ($dir === false) {
return false;
}
// http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.1.2
if (!$this->_send_sftp_packet(NET_SFTP_OPENDIR, pack('Na*', strlen($dir), $dir))) {
return false;
}
$response = $this->_get_sftp_packet();
switch ($this->packet_type) {
case NET_SFTP_HANDLE:
// http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-9.2
// since 'handle' is the last field in the SSH_FXP_HANDLE packet, we'll just remove the first four bytes that
// represent the length of the string and leave it at that
$handle = substr($response, 4);
break;
case NET_SFTP_STATUS:
// presumably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nstatus', $this->_string_shift($response, 4)));
$this->_logError($response, $status);
return $status;
default:
user_error('Expected SSH_FXP_HANDLE or SSH_FXP_STATUS');
return false;
}
$this->_update_stat_cache($dir, array());
$contents = array();
while (true) {
// http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.2.2
// why multiple SSH_FXP_READDIR packets would be sent when the response to a single one can span arbitrarily many
// SSH_MSG_CHANNEL_DATA messages is not known to me.
if (!$this->_send_sftp_packet(NET_SFTP_READDIR, pack('Na*', strlen($handle), $handle))) {
return false;
}
$response = $this->_get_sftp_packet();
switch ($this->packet_type) {
case NET_SFTP_NAME:
if (strlen($response) < 4) {
return false;
}
extract(unpack('Ncount', $this->_string_shift($response, 4)));
for ($i = 0; $i < $count; $i++) {
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$shortname = $this->_string_shift($response, $length);
// SFTPv4 "removed the long filename from the names structure-- it can now be
// built from information available in the attrs structure."
if ($this->version < 4) {
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$longname = $this->_string_shift($response, $length);
}
$attributes = $this->_parseAttributes($response);
if (!isset($attributes['type']) && $this->version < 4) {
$fileType = $this->_parseLongname($longname);
if ($fileType) {
$attributes['type'] = $fileType;
}
}
$contents[$shortname] = $attributes + array('filename' => $shortname);
if (isset($attributes['type']) && $attributes['type'] == NET_SFTP_TYPE_DIRECTORY && ($shortname != '.' && $shortname != '..')) {
$this->_update_stat_cache($dir . '/' . $shortname, array());
} else {
if ($shortname == '..') {
$temp = $this->_realpath($dir . '/..') . '/.';
} else {
$temp = $dir . '/' . $shortname;
}
$this->_update_stat_cache($temp, (object) array('lstat' => $attributes));
}
// SFTPv6 has an optional boolean end-of-list field, but we'll ignore that, since the
// final SSH_FXP_STATUS packet should tell us that, already.
}
break;
case NET_SFTP_STATUS:
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nstatus', $this->_string_shift($response, 4)));
if ($status != NET_SFTP_STATUS_EOF) {
$this->_logError($response, $status);
return $status;
}
break 2;
default:
user_error('Expected SSH_FXP_NAME or SSH_FXP_STATUS');
return false;
}
}
if (!$this->_close_handle($handle)) {
return false;
}
if (count($this->sortOptions)) {
uasort($contents, array(&$this, '_comparator'));
}
return $raw ? $contents : array_map('strval', array_keys($contents));
}
/**
* Compares two rawlist entries using parameters set by setListOrder()
*
* Intended for use with uasort()
*
* @param array $a
* @param array $b
* @return int
* @access private
*/
function _comparator($a, $b)
{
switch (true) {
case $a['filename'] === '.' || $b['filename'] === '.':
if ($a['filename'] === $b['filename']) {
return 0;
}
return $a['filename'] === '.' ? -1 : 1;
case $a['filename'] === '..' || $b['filename'] === '..':
if ($a['filename'] === $b['filename']) {
return 0;
}
return $a['filename'] === '..' ? -1 : 1;
case isset($a['type']) && $a['type'] === NET_SFTP_TYPE_DIRECTORY:
if (!isset($b['type'])) {
return 1;
}
if ($b['type'] !== $a['type']) {
return -1;
}
break;
case isset($b['type']) && $b['type'] === NET_SFTP_TYPE_DIRECTORY:
return 1;
}
foreach ($this->sortOptions as $sort => $order) {
if (!isset($a[$sort]) || !isset($b[$sort])) {
if (isset($a[$sort])) {
return -1;
}
if (isset($b[$sort])) {
return 1;
}
return 0;
}
switch ($sort) {
case 'filename':
$result = strcasecmp($a['filename'], $b['filename']);
if ($result) {
return $order === SORT_DESC ? -$result : $result;
}
break;
case 'permissions':
case 'mode':
$a[$sort]&= 07777;
$b[$sort]&= 07777;
default:
if ($a[$sort] === $b[$sort]) {
break;
}
return $order === SORT_ASC ? $a[$sort] - $b[$sort] : $b[$sort] - $a[$sort];
}
}
}
/**
* Defines how nlist() and rawlist() will be sorted - if at all.
*
* If sorting is enabled directories and files will be sorted independently with
* directories appearing before files in the resultant array that is returned.
*
* Any parameter returned by stat is a valid sort parameter for this function.
* Filename comparisons are case insensitive.
*
* Examples:
*
* $sftp->setListOrder('filename', SORT_ASC);
* $sftp->setListOrder('size', SORT_DESC, 'filename', SORT_ASC);
* $sftp->setListOrder(true);
* Separates directories from files but doesn't do any sorting beyond that
* $sftp->setListOrder();
* Don't do any sort of sorting
*
* @access public
*/
function setListOrder()
{
$this->sortOptions = array();
$args = func_get_args();
if (empty($args)) {
return;
}
$len = count($args) & 0x7FFFFFFE;
for ($i = 0; $i < $len; $i+=2) {
$this->sortOptions[$args[$i]] = $args[$i + 1];
}
if (!count($this->sortOptions)) {
$this->sortOptions = array('bogus' => true);
}
}
/**
* Returns the file size, in bytes, or false, on failure
*
* Files larger than 4GB will show up as being exactly 4GB.
*
* @param string $filename
* @return mixed
* @access public
*/
function size($filename)
{
$result = $this->stat($filename);
if ($result === false) {
return false;
}
return isset($result['size']) ? $result['size'] : -1;
}
/**
* Save files / directories to cache
*
* @param string $path
* @param mixed $value
* @access private
*/
function _update_stat_cache($path, $value)
{
if ($this->use_stat_cache === false) {
return;
}
// preg_replace('#^/|/(?=/)|/$#', '', $dir) == str_replace('//', '/', trim($path, '/'))
$dirs = explode('/', preg_replace('#^/|/(?=/)|/$#', '', $path));
$temp = &$this->stat_cache;
$max = count($dirs) - 1;
foreach ($dirs as $i => $dir) {
// if $temp is an object that means one of two things.
// 1. a file was deleted and changed to a directory behind phpseclib's back
// 2. it's a symlink. when lstat is done it's unclear what it's a symlink to
if (is_object($temp)) {
$temp = array();
}
if (!isset($temp[$dir])) {
$temp[$dir] = array();
}
if ($i === $max) {
if (is_object($temp[$dir]) && is_object($value)) {
if (!isset($value->stat) && isset($temp[$dir]->stat)) {
$value->stat = $temp[$dir]->stat;
}
if (!isset($value->lstat) && isset($temp[$dir]->lstat)) {
$value->lstat = $temp[$dir]->lstat;
}
}
$temp[$dir] = $value;
break;
}
$temp = &$temp[$dir];
}
}
/**
* Remove files / directories from cache
*
* @param string $path
* @return bool
* @access private
*/
function _remove_from_stat_cache($path)
{
$dirs = explode('/', preg_replace('#^/|/(?=/)|/$#', '', $path));
$temp = &$this->stat_cache;
$max = count($dirs) - 1;
foreach ($dirs as $i => $dir) {
if (!is_array($temp)) {
return false;
}
if ($i === $max) {
unset($temp[$dir]);
return true;
}
if (!isset($temp[$dir])) {
return false;
}
$temp = &$temp[$dir];
}
}
/**
* Checks cache for path
*
* Mainly used by file_exists
*
* @param string $path
* @return mixed
* @access private
*/
function _query_stat_cache($path)
{
$dirs = explode('/', preg_replace('#^/|/(?=/)|/$#', '', $path));
$temp = &$this->stat_cache;
foreach ($dirs as $dir) {
if (!is_array($temp)) {
return null;
}
if (!isset($temp[$dir])) {
return null;
}
$temp = &$temp[$dir];
}
return $temp;
}
/**
* Returns general information about a file.
*
* Returns an array on success and false otherwise.
*
* @param string $filename
* @return mixed
* @access public
*/
function stat($filename)
{
if (!$this->_precheck()) {
return false;
}
$filename = $this->_realpath($filename);
if ($filename === false) {
return false;
}
if ($this->use_stat_cache) {
$result = $this->_query_stat_cache($filename);
if (is_array($result) && isset($result['.']) && isset($result['.']->stat)) {
return $result['.']->stat;
}
if (is_object($result) && isset($result->stat)) {
return $result->stat;
}
}
$stat = $this->_stat($filename, NET_SFTP_STAT);
if ($stat === false) {
$this->_remove_from_stat_cache($filename);
return false;
}
if (isset($stat['type'])) {
if ($stat['type'] == NET_SFTP_TYPE_DIRECTORY) {
$filename.= '/.';
}
$this->_update_stat_cache($filename, (object) array('stat' => $stat));
return $stat;
}
$pwd = $this->pwd;
$stat['type'] = $this->chdir($filename) ?
NET_SFTP_TYPE_DIRECTORY :
NET_SFTP_TYPE_REGULAR;
$this->pwd = $pwd;
if ($stat['type'] == NET_SFTP_TYPE_DIRECTORY) {
$filename.= '/.';
}
$this->_update_stat_cache($filename, (object) array('stat' => $stat));
return $stat;
}
/**
* Returns general information about a file or symbolic link.
*
* Returns an array on success and false otherwise.
*
* @param string $filename
* @return mixed
* @access public
*/
function lstat($filename)
{
if (!$this->_precheck()) {
return false;
}
$filename = $this->_realpath($filename);
if ($filename === false) {
return false;
}
if ($this->use_stat_cache) {
$result = $this->_query_stat_cache($filename);
if (is_array($result) && isset($result['.']) && isset($result['.']->lstat)) {
return $result['.']->lstat;
}
if (is_object($result) && isset($result->lstat)) {
return $result->lstat;
}
}
$lstat = $this->_stat($filename, NET_SFTP_LSTAT);
if ($lstat === false) {
$this->_remove_from_stat_cache($filename);
return false;
}
if (isset($lstat['type'])) {
if ($lstat['type'] == NET_SFTP_TYPE_DIRECTORY) {
$filename.= '/.';
}
$this->_update_stat_cache($filename, (object) array('lstat' => $lstat));
return $lstat;
}
$stat = $this->_stat($filename, NET_SFTP_STAT);
if ($lstat != $stat) {
$lstat = array_merge($lstat, array('type' => NET_SFTP_TYPE_SYMLINK));
$this->_update_stat_cache($filename, (object) array('lstat' => $lstat));
return $stat;
}
$pwd = $this->pwd;
$lstat['type'] = $this->chdir($filename) ?
NET_SFTP_TYPE_DIRECTORY :
NET_SFTP_TYPE_REGULAR;
$this->pwd = $pwd;
if ($lstat['type'] == NET_SFTP_TYPE_DIRECTORY) {
$filename.= '/.';
}
$this->_update_stat_cache($filename, (object) array('lstat' => $lstat));
return $lstat;
}
/**
* Returns general information about a file or symbolic link
*
* Determines information without calling \phpseclib\Net\SFTP::realpath().
* The second parameter can be either NET_SFTP_STAT or NET_SFTP_LSTAT.
*
* @param string $filename
* @param int $type
* @return mixed
* @access private
*/
function _stat($filename, $type)
{
// SFTPv4+ adds an additional 32-bit integer field - flags - to the following:
$packet = pack('Na*', strlen($filename), $filename);
if (!$this->_send_sftp_packet($type, $packet)) {
return false;
}
$response = $this->_get_sftp_packet();
switch ($this->packet_type) {
case NET_SFTP_ATTRS:
return $this->_parseAttributes($response);
case NET_SFTP_STATUS:
$this->_logError($response);
return false;
}
user_error('Expected SSH_FXP_ATTRS or SSH_FXP_STATUS');
return false;
}
/**
* Truncates a file to a given length
*
* @param string $filename
* @param int $new_size
* @return bool
* @access public
*/
function truncate($filename, $new_size)
{
$attr = pack('N3', NET_SFTP_ATTR_SIZE, $new_size / 4294967296, $new_size); // 4294967296 == 0x100000000 == 1<<32
return $this->_setstat($filename, $attr, false);
}
/**
* Sets access and modification time of file.
*
* If the file does not exist, it will be created.
*
* @param string $filename
* @param int $time
* @param int $atime
* @return bool
* @access public
*/
function touch($filename, $time = null, $atime = null)
{
if (!$this->_precheck()) {
return false;
}
$filename = $this->_realpath($filename);
if ($filename === false) {
return false;
}
if (!isset($time)) {
$time = time();
}
if (!isset($atime)) {
$atime = $time;
}
if ($this->version < 4) {
$attr = pack('N3', NET_SFTP_ATTR_ACCESSTIME, $atime, $time);
} else {
$attr = pack(
'N5',
NET_SFTP_ATTR_ACCESSTIME | NET_SFTP_ATTR_MODIFYTIME,
$atime / 4294967296,
$atime,
$time / 4294967296,
$time
);
}
$packet = pack('Na*', strlen($filename), $filename);
$packet.= $this->version >= 5 ?
pack('N2', 0, NET_SFTP_OPEN_OPEN_EXISTING) :
pack('N', NET_SFTP_OPEN_WRITE | NET_SFTP_OPEN_CREATE | NET_SFTP_OPEN_EXCL);
$packet.= $attr;
if (!$this->_send_sftp_packet(NET_SFTP_OPEN, $packet)) {
return false;
}
$response = $this->_get_sftp_packet();
switch ($this->packet_type) {
case NET_SFTP_HANDLE:
return $this->_close_handle(substr($response, 4));
case NET_SFTP_STATUS:
$this->_logError($response);
break;
default:
user_error('Expected SSH_FXP_HANDLE or SSH_FXP_STATUS');
return false;
}
return $this->_setstat($filename, $attr, false);
}
/**
* Changes file or directory owner
*
* $uid should be an int for SFTPv3 and a string for SFTPv4+. Ideally the string
* would be of the form "user@dns_domain" but it does not need to be.
* `$sftp->getSupportedVersions()['version']` will return the specific version
* that's being used.
*
* Returns true on success or false on error.
*
* @param string $filename
* @param int|string $uid
* @param bool $recursive
* @return bool
* @access public
*/
function chown($filename, $uid, $recursive = false)
{
/*
quoting <https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-7.5>,
"To avoid a representation that is tied to a particular underlying
implementation at the client or server, the use of UTF-8 strings has
been chosen. The string should be of the form "user@dns_domain".
This will allow for a client and server that do not use the same
local representation the ability to translate to a common syntax that
can be interpreted by both. In the case where there is no
translation available to the client or server, the attribute value
must be constructed without the "@"."
phpseclib _could_ auto append the dns_domain to $uid BUT what if it shouldn't
have one? phpseclib would have no way of knowing so rather than guess phpseclib
will just use whatever value the user provided
*/
$attr = $this->version < 4 ?
// quoting <http://www.kernel.org/doc/man-pages/online/pages/man2/chown.2.html>,
// "if the owner or group is specified as -1, then that ID is not changed"
pack('N3', NET_SFTP_ATTR_UIDGID, $uid, -1) :
// quoting <https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-7.5>,
// "If either the owner or group field is zero length, the field should be
// considered absent, and no change should be made to that specific field
// during a modification operation"
pack('NNa*Na*', NET_SFTP_ATTR_OWNERGROUP, strlen($uid), $uid, 0, '');
return $this->_setstat($filename, $attr, $recursive);
}
/**
* Changes file or directory group
*
* $gid should be an int for SFTPv3 and a string for SFTPv4+. Ideally the string
* would be of the form "user@dns_domain" but it does not need to be.
* `$sftp->getSupportedVersions()['version']` will return the specific version
* that's being used.
*
* Returns true on success or false on error.
*
* @param string $filename
* @param int|string $gid
* @param bool $recursive
* @return bool
* @access public
*/
function chgrp($filename, $gid, $recursive = false)
{
$attr = $this->version < 4 ?
pack('N3', NET_SFTP_ATTR_UIDGID, -1, $gid) :
pack('NNa*Na*', NET_SFTP_ATTR_OWNERGROUP, 0, '', strlen($gid), $gid);
return $this->_setstat($filename, $attr, $recursive);
}
/**
* Set permissions on a file.
*
* Returns the new file permissions on success or false on error.
* If $recursive is true than this just returns true or false.
*
* @param int $mode
* @param string $filename
* @param bool $recursive
* @return mixed
* @access public
*/
function chmod($mode, $filename, $recursive = false)
{
if (is_string($mode) && is_int($filename)) {
$temp = $mode;
$mode = $filename;
$filename = $temp;
}
$attr = pack('N2', NET_SFTP_ATTR_PERMISSIONS, $mode & 07777);
if (!$this->_setstat($filename, $attr, $recursive)) {
return false;
}
if ($recursive) {
return true;
}
$filename = $this->realpath($filename);
// rather than return what the permissions *should* be, we'll return what they actually are. this will also
// tell us if the file actually exists.
// incidentally, SFTPv4+ adds an additional 32-bit integer field - flags - to the following:
$packet = pack('Na*', strlen($filename), $filename);
if (!$this->_send_sftp_packet(NET_SFTP_STAT, $packet)) {
return false;
}
$response = $this->_get_sftp_packet();
switch ($this->packet_type) {
case NET_SFTP_ATTRS:
$attrs = $this->_parseAttributes($response);
return $attrs['permissions'];
case NET_SFTP_STATUS:
$this->_logError($response);
return false;
}
user_error('Expected SSH_FXP_ATTRS or SSH_FXP_STATUS');
return false;
}
/**
* Sets information about a file
*
* @param string $filename
* @param string $attr
* @param bool $recursive
* @return bool
* @access private
*/
function _setstat($filename, $attr, $recursive)
{
if (!$this->_precheck()) {
return false;
}
$filename = $this->_realpath($filename);
if ($filename === false) {
return false;
}
$this->_remove_from_stat_cache($filename);
if ($recursive) {
$i = 0;
$result = $this->_setstat_recursive($filename, $attr, $i);
$this->_read_put_responses($i);
return $result;
}
$packet = $this->version >= 4 ?
pack('Na*a*Ca*', strlen($filename), $filename, substr($attr, 0, 4), NET_SFTP_TYPE_UNKNOWN, substr($attr, 4)) :
pack('Na*a*', strlen($filename), $filename, $attr);
if (!$this->_send_sftp_packet(NET_SFTP_SETSTAT, $packet)) {
return false;
}
/*
"Because some systems must use separate system calls to set various attributes, it is possible that a failure
response will be returned, but yet some of the attributes may be have been successfully modified. If possible,
servers SHOULD avoid this situation; however, clients MUST be aware that this is possible."
-- http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.6
*/
$response = $this->_get_sftp_packet();
if ($this->packet_type != NET_SFTP_STATUS) {
user_error('Expected SSH_FXP_STATUS');
return false;
}
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nstatus', $this->_string_shift($response, 4)));
if ($status != NET_SFTP_STATUS_OK) {
$this->_logError($response, $status);
return false;
}
return true;
}
/**
* Recursively sets information on directories on the SFTP server
*
* Minimizes directory lookups and SSH_FXP_STATUS requests for speed.
*
* @param string $path
* @param string $attr
* @param int $i
* @return bool
* @access private
*/
function _setstat_recursive($path, $attr, &$i)
{
if (!$this->_read_put_responses($i)) {
return false;
}
$i = 0;
$entries = $this->_list($path, true);
if ($entries === false || is_int($entries)) {
return $this->_setstat($path, $attr, false);
}
// normally $entries would have at least . and .. but it might not if the directories
// permissions didn't allow reading
if (empty($entries)) {
return false;
}
unset($entries['.'], $entries['..']);
foreach ($entries as $filename => $props) {
if (!isset($props['type'])) {
return false;
}
$temp = $path . '/' . $filename;
if ($props['type'] == NET_SFTP_TYPE_DIRECTORY) {
if (!$this->_setstat_recursive($temp, $attr, $i)) {
return false;
}
} else {
$packet = $this->version >= 4 ?
pack('Na*Ca*', strlen($temp), $temp, NET_SFTP_TYPE_UNKNOWN, $attr) :
pack('Na*a*', strlen($temp), $temp, $attr);
if (!$this->_send_sftp_packet(NET_SFTP_SETSTAT, $packet)) {
return false;
}
$i++;
if ($i >= NET_SFTP_QUEUE_SIZE) {
if (!$this->_read_put_responses($i)) {
return false;
}
$i = 0;
}
}
}
$packet = $this->version >= 4 ?
pack('Na*Ca*', strlen($temp), $temp, NET_SFTP_TYPE_UNKNOWN, $attr) :
pack('Na*a*', strlen($temp), $temp, $attr);
if (!$this->_send_sftp_packet(NET_SFTP_SETSTAT, $packet)) {
return false;
}
$i++;
if ($i >= NET_SFTP_QUEUE_SIZE) {
if (!$this->_read_put_responses($i)) {
return false;
}
$i = 0;
}
return true;
}
/**
* Return the target of a symbolic link
*
* @param string $link
* @return mixed
* @access public
*/
function readlink($link)
{
if (!$this->_precheck()) {
return false;
}
$link = $this->_realpath($link);
if (!$this->_send_sftp_packet(NET_SFTP_READLINK, pack('Na*', strlen($link), $link))) {
return false;
}
$response = $this->_get_sftp_packet();
switch ($this->packet_type) {
case NET_SFTP_NAME:
break;
case NET_SFTP_STATUS:
$this->_logError($response);
return false;
default:
user_error('Expected SSH_FXP_NAME or SSH_FXP_STATUS');
return false;
}
if (strlen($response) < 4) {
return false;
}
extract(unpack('Ncount', $this->_string_shift($response, 4)));
// the file isn't a symlink
if (!$count) {
return false;
}
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
return $this->_string_shift($response, $length);
}
/**
* Create a symlink
*
* symlink() creates a symbolic link to the existing target with the specified name link.
*
* @param string $target
* @param string $link
* @return bool
* @access public
*/
function symlink($target, $link)
{
if (!$this->_precheck()) {
return false;
}
//$target = $this->_realpath($target);
$link = $this->_realpath($link);
/* quoting https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-09#section-12.1 :
Changed the SYMLINK packet to be LINK and give it the ability to
create hard links. Also change it's packet number because many
implementation implemented SYMLINK with the arguments reversed.
Hopefully the new argument names make it clear which way is which.
*/
if ($this->version == 6) {
$type = NET_SFTP_LINK;
$packet = pack('Na*Na*C', strlen($link), $link, strlen($target), $target, 1);
} else {
$type = NET_SFTP_SYMLINK;
/* quoting http://bxr.su/OpenBSD/usr.bin/ssh/PROTOCOL#347 :
3.1. sftp: Reversal of arguments to SSH_FXP_SYMLINK
When OpenSSH's sftp-server was implemented, the order of the arguments
to the SSH_FXP_SYMLINK method was inadvertently reversed. Unfortunately,
the reversal was not noticed until the server was widely deployed. Since
fixing this to follow the specification would cause incompatibility, the
current order was retained. For correct operation, clients should send
SSH_FXP_SYMLINK as follows:
uint32 id
string targetpath
string linkpath */
$packet = substr($this->server_identifier, 0, 15) == 'SSH-2.0-OpenSSH' ?
pack('Na*Na*', strlen($target), $target, strlen($link), $link) :
pack('Na*Na*', strlen($link), $link, strlen($target), $target);
}
if (!$this->_send_sftp_packet($type, $packet)) {
return false;
}
$response = $this->_get_sftp_packet();
if ($this->packet_type != NET_SFTP_STATUS) {
user_error('Expected SSH_FXP_STATUS');
return false;
}
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nstatus', $this->_string_shift($response, 4)));
if ($status != NET_SFTP_STATUS_OK) {
$this->_logError($response, $status);
return false;
}
return true;
}
/**
* Creates a directory.
*
* @param string $dir
* @param int $mode
* @param bool $recursive
* @return bool
* @access public
*/
function mkdir($dir, $mode = -1, $recursive = false)
{
if (!$this->_precheck()) {
return false;
}
$dir = $this->_realpath($dir);
if ($recursive) {
$dirs = explode('/', preg_replace('#/(?=/)|/$#', '', $dir));
if (empty($dirs[0])) {
array_shift($dirs);
$dirs[0] = '/' . $dirs[0];
}
for ($i = 0; $i < count($dirs); $i++) {
$temp = array_slice($dirs, 0, $i + 1);
$temp = implode('/', $temp);
$result = $this->_mkdir_helper($temp, $mode);
}
return $result;
}
return $this->_mkdir_helper($dir, $mode);
}
/**
* Helper function for directory creation
*
* @param string $dir
* @param int $mode
* @return bool
* @access private
*/
function _mkdir_helper($dir, $mode)
{
// send SSH_FXP_MKDIR without any attributes (that's what the \0\0\0\0 is doing)
if (!$this->_send_sftp_packet(NET_SFTP_MKDIR, pack('Na*a*', strlen($dir), $dir, "\0\0\0\0"))) {
return false;
}
$response = $this->_get_sftp_packet();
if ($this->packet_type != NET_SFTP_STATUS) {
user_error('Expected SSH_FXP_STATUS');
return false;
}
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nstatus', $this->_string_shift($response, 4)));
if ($status != NET_SFTP_STATUS_OK) {
$this->_logError($response, $status);
return false;
}
if ($mode !== -1) {
$this->chmod($mode, $dir);
}
return true;
}
/**
* Removes a directory.
*
* @param string $dir
* @return bool
* @access public
*/
function rmdir($dir)
{
if (!$this->_precheck()) {
return false;
}
$dir = $this->_realpath($dir);
if ($dir === false) {
return false;
}
if (!$this->_send_sftp_packet(NET_SFTP_RMDIR, pack('Na*', strlen($dir), $dir))) {
return false;
}
$response = $this->_get_sftp_packet();
if ($this->packet_type != NET_SFTP_STATUS) {
user_error('Expected SSH_FXP_STATUS');
return false;
}
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nstatus', $this->_string_shift($response, 4)));
if ($status != NET_SFTP_STATUS_OK) {
// presumably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED?
$this->_logError($response, $status);
return false;
}
$this->_remove_from_stat_cache($dir);
// the following will do a soft delete, which would be useful if you deleted a file
// and then tried to do a stat on the deleted file. the above, in contrast, does
// a hard delete
//$this->_update_stat_cache($dir, false);
return true;
}
/**
* Uploads a file to the SFTP server.
*
* By default, \phpseclib\Net\SFTP::put() does not read from the local filesystem. $data is dumped directly into $remote_file.
* So, for example, if you set $data to 'filename.ext' and then do \phpseclib\Net\SFTP::get(), you will get a file, twelve bytes
* long, containing 'filename.ext' as its contents.
*
* Setting $mode to self::SOURCE_LOCAL_FILE will change the above behavior. With self::SOURCE_LOCAL_FILE, $remote_file will
* contain as many bytes as filename.ext does on your local filesystem. If your filename.ext is 1MB then that is how
* large $remote_file will be, as well.
*
* Setting $mode to self::SOURCE_CALLBACK will use $data as callback function, which gets only one parameter -- number
* of bytes to return, and returns a string if there is some data or null if there is no more data
*
* If $data is a resource then it'll be used as a resource instead.
*
* Currently, only binary mode is supported. As such, if the line endings need to be adjusted, you will need to take
* care of that, yourself.
*
* $mode can take an additional two parameters - self::RESUME and self::RESUME_START. These are bitwise AND'd with
* $mode. So if you want to resume upload of a 300mb file on the local file system you'd set $mode to the following:
*
* self::SOURCE_LOCAL_FILE | self::RESUME
*
* If you wanted to simply append the full contents of a local file to the full contents of a remote file you'd replace
* self::RESUME with self::RESUME_START.
*
* If $mode & (self::RESUME | self::RESUME_START) then self::RESUME_START will be assumed.
*
* $start and $local_start give you more fine grained control over this process and take precident over self::RESUME
* when they're non-negative. ie. $start could let you write at the end of a file (like self::RESUME) or in the middle
* of one. $local_start could let you start your reading from the end of a file (like self::RESUME_START) or in the
* middle of one.
*
* Setting $local_start to > 0 or $mode | self::RESUME_START doesn't do anything unless $mode | self::SOURCE_LOCAL_FILE.
*
* @param string $remote_file
* @param string|resource $data
* @param int $mode
* @param int $start
* @param int $local_start
* @param callable|null $progressCallback
* @return bool
* @access public
* @internal ASCII mode for SFTPv4/5/6 can be supported by adding a new function - \phpseclib\Net\SFTP::setMode().
*/
function put($remote_file, $data, $mode = self::SOURCE_STRING, $start = -1, $local_start = -1, $progressCallback = null)
{
if (!$this->_precheck()) {
return false;
}
$remote_file = $this->_realpath($remote_file);
if ($remote_file === false) {
return false;
}
$this->_remove_from_stat_cache($remote_file);
if ($this->version >= 5) {
$flags = NET_SFTP_OPEN_OPEN_OR_CREATE;
} else {
$flags = NET_SFTP_OPEN_WRITE | NET_SFTP_OPEN_CREATE;
// according to the SFTP specs, NET_SFTP_OPEN_APPEND should "force all writes to append data at the end of the file."
// in practice, it doesn't seem to do that.
//$flags|= ($mode & SFTP::RESUME) ? NET_SFTP_OPEN_APPEND : NET_SFTP_OPEN_TRUNCATE;
}
if ($start >= 0) {
$offset = $start;
} elseif ($mode & self::RESUME) {
// if NET_SFTP_OPEN_APPEND worked as it should _size() wouldn't need to be called
$size = $this->size($remote_file);
$offset = $size !== false ? $size : 0;
} else {
$offset = 0;
if ($this->version >= 5) {
$flags = NET_SFTP_OPEN_CREATE_TRUNCATE;
} else {
$flags|= NET_SFTP_OPEN_TRUNCATE;
}
}
$packet = pack('Na*', strlen($remote_file), $remote_file);
$packet.= $this->version >= 5 ?
pack('N3', 0, $flags, 0) :
pack('N2', $flags, 0);
if (!$this->_send_sftp_packet(NET_SFTP_OPEN, $packet)) {
return false;
}
$response = $this->_get_sftp_packet();
switch ($this->packet_type) {
case NET_SFTP_HANDLE:
$handle = substr($response, 4);
break;
case NET_SFTP_STATUS:
$this->_logError($response);
return false;
default:
user_error('Expected SSH_FXP_HANDLE or SSH_FXP_STATUS');
return false;
}
// http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.2.3
$dataCallback = false;
switch (true) {
case $mode & self::SOURCE_CALLBACK:
if (!is_callable($data)) {
user_error("\$data should be is_callable() if you specify SOURCE_CALLBACK flag");
}
$dataCallback = $data;
// do nothing
break;
case is_resource($data):
$mode = $mode & ~self::SOURCE_LOCAL_FILE;
$info = stream_get_meta_data($data);
if (isset($info['wrapper_type']) && $info['wrapper_type'] == 'PHP' && $info['stream_type'] == 'Input') {
$fp = fopen('php://memory', 'w+');
stream_copy_to_stream($data, $fp);
rewind($fp);
} else {
$fp = $data;
}
break;
case $mode & self::SOURCE_LOCAL_FILE:
if (!is_file($data)) {
user_error("$data is not a valid file");
return false;
}
$fp = @fopen($data, 'rb');
if (!$fp) {
return false;
}
}
if (isset($fp)) {
$stat = fstat($fp);
$size = !empty($stat) ? $stat['size'] : 0;
if ($local_start >= 0) {
fseek($fp, $local_start);
$size-= $local_start;
}
} elseif ($dataCallback) {
$size = 0;
} else {
$size = strlen($data);
}
$sent = 0;
$size = $size < 0 ? ($size & 0x7FFFFFFF) + 0x80000000 : $size;
$sftp_packet_size = $this->max_sftp_packet;
// make the SFTP packet be exactly the SFTP packet size by including the bytes in the NET_SFTP_WRITE packets "header"
$sftp_packet_size-= strlen($handle) + 25;
$i = $j = 0;
while ($dataCallback || ($size === 0 || $sent < $size)) {
if ($dataCallback) {
$temp = call_user_func($dataCallback, $sftp_packet_size);
if (is_null($temp)) {
break;
}
} else {
$temp = isset($fp) ? fread($fp, $sftp_packet_size) : substr($data, $sent, $sftp_packet_size);
if ($temp === false || $temp === '') {
break;
}
}
$subtemp = $offset + $sent;
$packet = pack('Na*N3a*', strlen($handle), $handle, $subtemp / 4294967296, $subtemp, strlen($temp), $temp);
if (!$this->_send_sftp_packet(NET_SFTP_WRITE, $packet, $j)) {
if ($mode & self::SOURCE_LOCAL_FILE) {
fclose($fp);
}
return false;
}
$sent+= strlen($temp);
if (is_callable($progressCallback)) {
call_user_func($progressCallback, $sent);
}
$i++;
$j++;
if ($i == NET_SFTP_UPLOAD_QUEUE_SIZE) {
if (!$this->_read_put_responses($i)) {
$i = 0;
break;
}
$i = 0;
}
}
$result = $this->_close_handle($handle);
if (!$this->_read_put_responses($i)) {
if ($mode & self::SOURCE_LOCAL_FILE) {
fclose($fp);
}
$this->_close_handle($handle);
return false;
}
if ($mode & SFTP::SOURCE_LOCAL_FILE) {
if (isset($fp) && is_resource($fp)) {
fclose($fp);
}
if ($this->preserveTime) {
$stat = stat($data);
if ($this->version < 4) {
$attr = pack('N3', NET_SFTP_ATTR_ACCESSTIME, $stat['atime'], $stat['mtime']);
} else {
$attr = pack(
'N5',
NET_SFTP_ATTR_ACCESSTIME | NET_SFTP_ATTR_MODIFYTIME,
$stat['atime'] / 4294967296,
$stat['atime'],
$stat['mtime'] / 4294967296,
$stat['mtime']
);
}
if (!$this->_setstat($remote_file, $attr, false)) {
user_error('Error setting file time');
}
}
}
return $result;
}
/**
* Reads multiple successive SSH_FXP_WRITE responses
*
* Sending an SSH_FXP_WRITE packet and immediately reading its response isn't as efficient as blindly sending out $i
* SSH_FXP_WRITEs, in succession, and then reading $i responses.
*
* @param int $i
* @return bool
* @access private
*/
function _read_put_responses($i)
{
while ($i--) {
$response = $this->_get_sftp_packet();
if ($this->packet_type != NET_SFTP_STATUS) {
user_error('Expected SSH_FXP_STATUS');
return false;
}
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nstatus', $this->_string_shift($response, 4)));
if ($status != NET_SFTP_STATUS_OK) {
$this->_logError($response, $status);
break;
}
}
return $i < 0;
}
/**
* Close handle
*
* @param string $handle
* @return bool
* @access private
*/
function _close_handle($handle)
{
if (!$this->_send_sftp_packet(NET_SFTP_CLOSE, pack('Na*', strlen($handle), $handle))) {
return false;
}
// "The client MUST release all resources associated with the handle regardless of the status."
// -- http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.1.3
$response = $this->_get_sftp_packet();
if ($this->packet_type != NET_SFTP_STATUS) {
user_error('Expected SSH_FXP_STATUS');
return false;
}
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nstatus', $this->_string_shift($response, 4)));
if ($status != NET_SFTP_STATUS_OK) {
$this->_logError($response, $status);
return false;
}
return true;
}
/**
* Downloads a file from the SFTP server.
*
* Returns a string containing the contents of $remote_file if $local_file is left undefined or a boolean false if
* the operation was unsuccessful. If $local_file is defined, returns true or false depending on the success of the
* operation.
*
* $offset and $length can be used to download files in chunks.
*
* @param string $remote_file
* @param string $local_file
* @param int $offset
* @param int $length
* @param callable|null $progressCallback
* @return mixed
* @access public
*/
function get($remote_file, $local_file = false, $offset = 0, $length = -1, $progressCallback = null)
{
if (!$this->_precheck()) {
return false;
}
$remote_file = $this->_realpath($remote_file);
if ($remote_file === false) {
return false;
}
$packet = pack('Na*', strlen($remote_file), $remote_file);
$packet.= $this->version >= 5 ?
pack('N3', 0, NET_SFTP_OPEN_OPEN_EXISTING, 0) :
pack('N2', NET_SFTP_OPEN_READ, 0);
if (!$this->_send_sftp_packet(NET_SFTP_OPEN, $packet)) {
return false;
}
$response = $this->_get_sftp_packet();
switch ($this->packet_type) {
case NET_SFTP_HANDLE:
$handle = substr($response, 4);
break;
case NET_SFTP_STATUS: // presumably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED
$this->_logError($response);
return false;
default:
user_error('Expected SSH_FXP_HANDLE or SSH_FXP_STATUS');
return false;
}
if (is_resource($local_file)) {
$fp = $local_file;
$stat = fstat($fp);
$res_offset = $stat['size'];
} else {
$res_offset = 0;
if ($local_file !== false && !is_callable($local_file)) {
$fp = fopen($local_file, 'wb');
if (!$fp) {
return false;
}
} else {
$content = '';
}
}
$fclose_check = $local_file !== false && !is_callable($local_file) && !is_resource($local_file);
$start = $offset;
$read = 0;
while (true) {
$i = 0;
while ($i < NET_SFTP_QUEUE_SIZE && ($length < 0 || $read < $length)) {
$tempoffset = $start + $read;
$packet_size = $length > 0 ? min($this->max_sftp_packet, $length - $read) : $this->max_sftp_packet;
$packet = pack('Na*N3', strlen($handle), $handle, $tempoffset / 4294967296, $tempoffset, $packet_size);
if (!$this->_send_sftp_packet(NET_SFTP_READ, $packet, $i)) {
if ($fclose_check) {
fclose($fp);
}
return false;
}
$packet = null;
$read+= $packet_size;
$i++;
}
if (!$i) {
break;
}
$packets_sent = $i - 1;
$clear_responses = false;
while ($i > 0) {
$i--;
if ($clear_responses) {
$this->_get_sftp_packet($packets_sent - $i);
continue;
} else {
$response = $this->_get_sftp_packet($packets_sent - $i);
}
switch ($this->packet_type) {
case NET_SFTP_DATA:
$temp = substr($response, 4);
$offset+= strlen($temp);
if ($local_file === false) {
$content.= $temp;
} elseif (is_callable($local_file)) {
$local_file($temp);
} else {
fputs($fp, $temp);
}
if (is_callable($progressCallback)) {
call_user_func($progressCallback, $offset);
}
$temp = null;
break;
case NET_SFTP_STATUS:
// could, in theory, return false if !strlen($content) but we'll hold off for the time being
$this->_logError($response);
$clear_responses = true; // don't break out of the loop yet, so we can read the remaining responses
break;
default:
if ($fclose_check) {
fclose($fp);
}
// maybe the file was successfully transferred, maybe it wasn't
if ($this->channel_close) {
$this->partial_init = false;
$this->_init_sftp_connection();
return false;
} else {
user_error('Expected SSH_FX_DATA or SSH_FXP_STATUS');
}
}
$response = null;
}
if ($clear_responses) {
break;
}
}
if ($length > 0 && $length <= $offset - $start) {
if ($local_file === false) {
$content = substr($content, 0, $length);
} else {
ftruncate($fp, $length + $res_offset);
}
}
if ($fclose_check) {
fclose($fp);
if ($this->preserveTime) {
$stat = $this->stat($remote_file);
touch($local_file, $stat['mtime'], $stat['atime']);
}
}
if (!$this->_close_handle($handle)) {
return false;
}
// if $content isn't set that means a file was written to
return isset($content) ? $content : true;
}
/**
* Deletes a file on the SFTP server.
*
* @param string $path
* @param bool $recursive
* @return bool
* @access public
*/
function delete($path, $recursive = true)
{
if (!$this->_precheck()) {
return false;
}
if (is_object($path)) {
// It's an object. Cast it as string before we check anything else.
$path = (string) $path;
}
if (!is_string($path) || $path == '') {
return false;
}
$path = $this->_realpath($path);
if ($path === false) {
return false;
}
// http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.3
if (!$this->_send_sftp_packet(NET_SFTP_REMOVE, pack('Na*', strlen($path), $path))) {
return false;
}
$response = $this->_get_sftp_packet();
if ($this->packet_type != NET_SFTP_STATUS) {
user_error('Expected SSH_FXP_STATUS');
return false;
}
// if $status isn't SSH_FX_OK it's probably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nstatus', $this->_string_shift($response, 4)));
if ($status != NET_SFTP_STATUS_OK) {
$this->_logError($response, $status);
if (!$recursive) {
return false;
}
$i = 0;
$result = $this->_delete_recursive($path, $i);
$this->_read_put_responses($i);
return $result;
}
$this->_remove_from_stat_cache($path);
return true;
}
/**
* Recursively deletes directories on the SFTP server
*
* Minimizes directory lookups and SSH_FXP_STATUS requests for speed.
*
* @param string $path
* @param int $i
* @return bool
* @access private
*/
function _delete_recursive($path, &$i)
{
if (!$this->_read_put_responses($i)) {
return false;
}
$i = 0;
$entries = $this->_list($path, true);
// The folder does not exist at all, so we cannot delete it.
if ($entries === NET_SFTP_STATUS_NO_SUCH_FILE) {
return false;
}
// Normally $entries would have at least . and .. but it might not if the directories
// permissions didn't allow reading. If this happens then default to an empty list of files.
if ($entries === false || is_int($entries)) {
$entries = array();
}
unset($entries['.'], $entries['..']);
foreach ($entries as $filename => $props) {
if (!isset($props['type'])) {
return false;
}
$temp = $path . '/' . $filename;
if ($props['type'] == NET_SFTP_TYPE_DIRECTORY) {
if (!$this->_delete_recursive($temp, $i)) {
return false;
}
} else {
if (!$this->_send_sftp_packet(NET_SFTP_REMOVE, pack('Na*', strlen($temp), $temp))) {
return false;
}
$this->_remove_from_stat_cache($temp);
$i++;
if ($i >= NET_SFTP_QUEUE_SIZE) {
if (!$this->_read_put_responses($i)) {
return false;
}
$i = 0;
}
}
}
if (!$this->_send_sftp_packet(NET_SFTP_RMDIR, pack('Na*', strlen($path), $path))) {
return false;
}
$this->_remove_from_stat_cache($path);
$i++;
if ($i >= NET_SFTP_QUEUE_SIZE) {
if (!$this->_read_put_responses($i)) {
return false;
}
$i = 0;
}
return true;
}
/**
* Checks whether a file or directory exists
*
* @param string $path
* @return bool
* @access public
*/
function file_exists($path)
{
if ($this->use_stat_cache) {
if (!$this->_precheck()) {
return false;
}
$path = $this->_realpath($path);
$result = $this->_query_stat_cache($path);
if (isset($result)) {
// return true if $result is an array or if it's an stdClass object
return $result !== false;
}
}
return $this->stat($path) !== false;
}
/**
* Tells whether the filename is a directory
*
* @param string $path
* @return bool
* @access public
*/
function is_dir($path)
{
$result = $this->_get_stat_cache_prop($path, 'type');
if ($result === false) {
return false;
}
return $result === NET_SFTP_TYPE_DIRECTORY;
}
/**
* Tells whether the filename is a regular file
*
* @param string $path
* @return bool
* @access public
*/
function is_file($path)
{
$result = $this->_get_stat_cache_prop($path, 'type');
if ($result === false) {
return false;
}
return $result === NET_SFTP_TYPE_REGULAR;
}
/**
* Tells whether the filename is a symbolic link
*
* @param string $path
* @return bool
* @access public
*/
function is_link($path)
{
$result = $this->_get_lstat_cache_prop($path, 'type');
if ($result === false) {
return false;
}
return $result === NET_SFTP_TYPE_SYMLINK;
}
/**
* Tells whether a file exists and is readable
*
* @param string $path
* @return bool
* @access public
*/
function is_readable($path)
{
if (!$this->_precheck()) {
return false;
}
$path = $this->_realpath($path);
$packet = pack('Na*N2', strlen($path), $path, NET_SFTP_OPEN_READ, 0);
if (!$this->_send_sftp_packet(NET_SFTP_OPEN, $packet)) {
return false;
}
$response = $this->_get_sftp_packet();
switch ($this->packet_type) {
case NET_SFTP_HANDLE:
return true;
case NET_SFTP_STATUS: // presumably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED
return false;
default:
user_error('Expected SSH_FXP_HANDLE or SSH_FXP_STATUS');
return false;
}
}
/**
* Tells whether the filename is writable
*
* @param string $path
* @return bool
* @access public
*/
function is_writable($path)
{
if (!$this->_precheck()) {
return false;
}
$path = $this->_realpath($path);
$packet = pack('Na*N2', strlen($path), $path, NET_SFTP_OPEN_WRITE, 0);
if (!$this->_send_sftp_packet(NET_SFTP_OPEN, $packet)) {
return false;
}
$response = $this->_get_sftp_packet();
switch ($this->packet_type) {
case NET_SFTP_HANDLE:
return true;
case NET_SFTP_STATUS: // presumably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED
return false;
default:
user_error('Expected SSH_FXP_HANDLE or SSH_FXP_STATUS');
return false;
}
}
/**
* Tells whether the filename is writeable
*
* Alias of is_writable
*
* @param string $path
* @return bool
* @access public
*/
function is_writeable($path)
{
return $this->is_writable($path);
}
/**
* Gets last access time of file
*
* @param string $path
* @return mixed
* @access public
*/
function fileatime($path)
{
return $this->_get_stat_cache_prop($path, 'atime');
}
/**
* Gets file modification time
*
* @param string $path
* @return mixed
* @access public
*/
function filemtime($path)
{
return $this->_get_stat_cache_prop($path, 'mtime');
}
/**
* Gets file permissions
*
* @param string $path
* @return mixed
* @access public
*/
function fileperms($path)
{
return $this->_get_stat_cache_prop($path, 'permissions');
}
/**
* Gets file owner
*
* @param string $path
* @return mixed
* @access public
*/
function fileowner($path)
{
return $this->_get_stat_cache_prop($path, 'uid');
}
/**
* Gets file group
*
* @param string $path
* @return mixed
* @access public
*/
function filegroup($path)
{
return $this->_get_stat_cache_prop($path, 'gid');
}
/**
* Gets file size
*
* @param string $path
* @return mixed
* @access public
*/
function filesize($path)
{
return $this->_get_stat_cache_prop($path, 'size');
}
/**
* Gets file type
*
* @param string $path
* @return mixed
* @access public
*/
function filetype($path)
{
$type = $this->_get_stat_cache_prop($path, 'type');
if ($type === false) {
return false;
}
switch ($type) {
case NET_SFTP_TYPE_BLOCK_DEVICE:
return 'block';
case NET_SFTP_TYPE_CHAR_DEVICE:
return 'char';
case NET_SFTP_TYPE_DIRECTORY:
return 'dir';
case NET_SFTP_TYPE_FIFO:
return 'fifo';
case NET_SFTP_TYPE_REGULAR:
return 'file';
case NET_SFTP_TYPE_SYMLINK:
return 'link';
default:
return false;
}
}
/**
* Return a stat properity
*
* Uses cache if appropriate.
*
* @param string $path
* @param string $prop
* @return mixed
* @access private
*/
function _get_stat_cache_prop($path, $prop)
{
return $this->_get_xstat_cache_prop($path, $prop, 'stat');
}
/**
* Return an lstat properity
*
* Uses cache if appropriate.
*
* @param string $path
* @param string $prop
* @return mixed
* @access private
*/
function _get_lstat_cache_prop($path, $prop)
{
return $this->_get_xstat_cache_prop($path, $prop, 'lstat');
}
/**
* Return a stat or lstat properity
*
* Uses cache if appropriate.
*
* @param string $path
* @param string $prop
* @param mixed $type
* @return mixed
* @access private
*/
function _get_xstat_cache_prop($path, $prop, $type)
{
if (!$this->_precheck()) {
return false;
}
if ($this->use_stat_cache) {
$path = $this->_realpath($path);
$result = $this->_query_stat_cache($path);
if (is_object($result) && isset($result->$type)) {
return $result->{$type}[$prop];
}
}
$result = $this->$type($path);
if ($result === false || !isset($result[$prop])) {
return false;
}
return $result[$prop];
}
/**
* Renames a file or a directory on the SFTP server.
*
* If the file already exists this will return false
*
* @param string $oldname
* @param string $newname
* @return bool
* @access public
*/
function rename($oldname, $newname)
{
if (!$this->_precheck()) {
return false;
}
$oldname = $this->_realpath($oldname);
$newname = $this->_realpath($newname);
if ($oldname === false || $newname === false) {
return false;
}
// http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.3
$packet = pack('Na*Na*', strlen($oldname), $oldname, strlen($newname), $newname);
if ($this->version >= 5) {
/* quoting https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-05#section-6.5 ,
'flags' is 0 or a combination of:
SSH_FXP_RENAME_OVERWRITE 0x00000001
SSH_FXP_RENAME_ATOMIC 0x00000002
SSH_FXP_RENAME_NATIVE 0x00000004
(none of these are currently supported) */
$packet.= "\0\0\0\0";
}
if (!$this->_send_sftp_packet(NET_SFTP_RENAME, $packet)) {
return false;
}
$response = $this->_get_sftp_packet();
if ($this->packet_type != NET_SFTP_STATUS) {
user_error('Expected SSH_FXP_STATUS');
return false;
}
// if $status isn't SSH_FX_OK it's probably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nstatus', $this->_string_shift($response, 4)));
if ($status != NET_SFTP_STATUS_OK) {
$this->_logError($response, $status);
return false;
}
// don't move the stat cache entry over since this operation could very well change the
// atime and mtime attributes
//$this->_update_stat_cache($newname, $this->_query_stat_cache($oldname));
$this->_remove_from_stat_cache($oldname);
$this->_remove_from_stat_cache($newname);
return true;
}
/**
* Parse Time
*
* See '7.7. Times' of draft-ietf-secsh-filexfer-13 for more info.
*
* @param string $key
* @param int $flags
* @param string $response
* @return array
* @access private
*/
function _parseTime($key, $flags, &$response)
{
if (strlen($response) < 8) {
user_error('Malformed file attributes');
return array();
}
$attr = array();
$attr[$key] = hexdec(bin2hex($this->_string_shift($response, 8)));
if ($flags & NET_SFTP_ATTR_SUBSECOND_TIMES) {
$attr+= extract(unpack('N' . $key . '_nseconds', $this->_string_shift($response, 4)));
}
return $attr;
}
/**
* Parse Attributes
*
* See '7. File Attributes' of draft-ietf-secsh-filexfer-13 for more info.
*
* @param string $response
* @return array
* @access private
*/
function _parseAttributes(&$response)
{
if ($this->version >= 4) {
$length = 5;
$format = 'Nflags/Ctype';
} else {
$length = 4;
$format = 'Nflags';
}
$attr = array();
if (strlen($response) < $length) {
user_error('Malformed file attributes');
return array();
}
extract(unpack($format, $this->_string_shift($response, $length)));
if (isset($type)) {
$attr['type'] = $type;
}
foreach ($this->attributes as $key => $value) {
switch ($flags & $key) {
case NET_SFTP_ATTR_UIDGID:
if ($this->version > 3) {
continue 2;
}
break;
case NET_SFTP_ATTR_CREATETIME:
case NET_SFTP_ATTR_MODIFYTIME:
case NET_SFTP_ATTR_ACL:
case NET_SFTP_ATTR_OWNERGROUP:
case NET_SFTP_ATTR_SUBSECOND_TIMES:
if ($this->version < 4) {
continue 2;
}
break;
case NET_SFTP_ATTR_BITS:
if ($this->version < 5) {
continue 2;
}
break;
case NET_SFTP_ATTR_ALLOCATION_SIZE:
case NET_SFTP_ATTR_TEXT_HINT:
case NET_SFTP_ATTR_MIME_TYPE:
case NET_SFTP_ATTR_LINK_COUNT:
case NET_SFTP_ATTR_UNTRANSLATED_NAME:
case NET_SFTP_ATTR_CTIME:
if ($this->version < 6) {
continue 2;
}
}
switch ($flags & $key) {
case NET_SFTP_ATTR_SIZE: // 0x00000001
// The size attribute is defined as an unsigned 64-bit integer.
// The following will use floats on 32-bit platforms, if necessary.
// As can be seen in the BigInteger class, floats are generally
// IEEE 754 binary64 "double precision" on such platforms and
// as such can represent integers of at least 2^50 without loss
// of precision. Interpreted in filesize, 2^50 bytes = 1024 TiB.
$attr['size'] = hexdec(bin2hex($this->_string_shift($response, 8)));
break;
case NET_SFTP_ATTR_UIDGID: // 0x00000002 (SFTPv3 or earlier)
if (strlen($response) < 8) {
user_error('Malformed file attributes');
return $attr;
}
$attr+= unpack('Nuid/Ngid', $this->_string_shift($response, 8));
break;
case NET_SFTP_ATTR_PERMISSIONS: // 0x00000004
if (strlen($response) < 4) {
user_error('Malformed file attributes');
return $attr;
}
$attr+= unpack('Npermissions', $this->_string_shift($response, 4));
// mode == permissions; permissions was the original array key and is retained for bc purposes.
// mode was added because that's the more industry standard terminology
$attr+= array('mode' => $attr['permissions']);
$fileType = $this->_parseMode($attr['permissions']);
if ($fileType !== false) {
$attr+= array('type' => $fileType);
}
break;
case NET_SFTP_ATTR_ACCESSTIME: // 0x00000008
if ($this->version >= 4) {
$attr+= $this->_parseTime('atime', $flags, $response);
break;
}
if (strlen($response) < 8) {
user_error('Malformed file attributes');
return $attr;
}
$attr+= unpack('Natime/Nmtime', $this->_string_shift($response, 8));
break;
case NET_SFTP_ATTR_CREATETIME: // 0x00000010 (SFTPv4+)
$attr+= $this->_parseTime('createtime', $flags, $response);
break;
case NET_SFTP_ATTR_MODIFYTIME: // 0x00000020
$attr+= $this->_parseTime('mtime', $flags, $response);
break;
case NET_SFTP_ATTR_ACL: // 0x00000040
// access control list
// see https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-04#section-5.7
// currently unsupported
if (strlen($response) < 4) {
user_error('Malformed file attributes');
return $attr;
}
extract(unpack('Ncount', $this->_string_shift($response, 4)));
for ($i = 0; $i < $count; $i++) {
if (strlen($response) < 16) {
user_error('Malformed file attributes');
return $attr;
}
extract(unpack('Ntype/Nflag/Nmask/Nlength', $this->_string_shift($response, 16)));
if (strlen($response) < $length) {
user_error('Malformed file attributes');
return $attr;
}
$this->_string_shift($response, $length); // who
}
break;
case NET_SFTP_ATTR_OWNERGROUP: // 0x00000080
if (strlen($response) < 4) {
user_error('Malformed file attributes');
return $attr;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
if (strlen($response) < $length) {
user_error('Malformed file attributes');
return $attr;
}
$attr['owner'] = $this->_string_shift($response, $length);
if (strlen($response) < 4) {
user_error('Malformed file attributes');
return $attr;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
if (strlen($response) < $length) {
user_error('Malformed file attributes');
return $attr;
}
$attr['group'] = $this->_string_shift($response, $length);
break;
case NET_SFTP_ATTR_SUBSECOND_TIMES: // 0x00000100
break;
case NET_SFTP_ATTR_BITS: // 0x00000200 (SFTPv5+)
// see https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-05#section-5.8
// currently unsupported
// tells if you file is:
// readonly, system, hidden, case inensitive, archive, encrypted, compressed, sparse
// append only, immutable, sync
if (strlen($response) < 8) {
user_error('Malformed file attributes');
return $attr;
}
extract(unpack('Nattrib-bits/Nattrib-bits-valid', $this->_string_shift($response, 8)));
break;
case NET_SFTP_ATTR_ALLOCATION_SIZE: // 0x00000400 (SFTPv6+)
// see https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-7.4
// represents the number of bytes htat the file consumes on the disk. will
// usually be larger than the 'size' field
$attr['allocation-size'] = hexdec(bin2hex($this->_string_shift($response, 8)));
break;
case NET_SFTP_ATTR_TEXT_HINT: // 0x00000800
// https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-7.10
// currently unsupported
// tells if file is "known text", "guessed text", "known binary", "guessed binary"
extract(unpack('Ctext-hint', $this->_string_shift($response)));
break;
case NET_SFTP_ATTR_MIME_TYPE: // 0x00001000
// see https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-7.11
if (strlen($response) < 4) {
user_error('Malformed file attributes');
return $attr;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
if (strlen($response) < $length) {
user_error('Malformed file attributes');
return $attr;
}
$attr['mime-type'] = $this->_string_shift($response, $length);
break;
case NET_SFTP_ATTR_LINK_COUNT: // 0x00002000
// see https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-7.12
if (strlen($response) < 4) {
user_error('Malformed file attributes');
return $attr;
}
$attr+= unpack('Nlink-count', $this->_string_shift($response, 4));
break;
case NET_SFTP_ATTR_UNTRANSLATED_NAME:// 0x00004000
// see https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-7.13
if (strlen($response) < 4) {
user_error('Malformed file attributes');
return $attr;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
if (strlen($response) < $length) {
user_error('Malformed file attributes');
return $attr;
}
$attr['untranslated-name'] = $this->_string_shift($response, $length);
break;
case NET_SFTP_ATTR_CTIME: // 0x00008000
// 'ctime' contains the last time the file attributes were changed. The
// exact meaning of this field depends on the server.
$attr+= $this->_parseTime('ctime', $flags, $response);
break;
case NET_SFTP_ATTR_EXTENDED: // 0x80000000
if (strlen($response) < 4) {
user_error('Malformed file attributes');
return $attr;
}
extract(unpack('Ncount', $this->_string_shift($response, 4)));
for ($i = 0; $i < $count; $i++) {
if (strlen($response) < 4) {
user_error('Malformed file attributes');
return $attr;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$key = $this->_string_shift($response, $length);
if (strlen($response) < 4) {
user_error('Malformed file attributes');
return $attr;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$attr[$key] = $this->_string_shift($response, $length);
}
}
}
return $attr;
}
/**
* Attempt to identify the file type
*
* Quoting the SFTP RFC, "Implementations MUST NOT send bits that are not defined" but they seem to anyway
*
* @param int $mode
* @return int
* @access private
*/
function _parseMode($mode)
{
// values come from http://lxr.free-electrons.com/source/include/uapi/linux/stat.h#L12
// see, also, http://linux.die.net/man/2/stat
switch ($mode & 0170000) {// ie. 1111 0000 0000 0000
case 0000000: // no file type specified - figure out the file type using alternative means
return false;
case 0040000:
return NET_SFTP_TYPE_DIRECTORY;
case 0100000:
return NET_SFTP_TYPE_REGULAR;
case 0120000:
return NET_SFTP_TYPE_SYMLINK;
// new types introduced in SFTPv5+
// http://tools.ietf.org/html/draft-ietf-secsh-filexfer-05#section-5.2
case 0010000: // named pipe (fifo)
return NET_SFTP_TYPE_FIFO;
case 0020000: // character special
return NET_SFTP_TYPE_CHAR_DEVICE;
case 0060000: // block special
return NET_SFTP_TYPE_BLOCK_DEVICE;
case 0140000: // socket
return NET_SFTP_TYPE_SOCKET;
case 0160000: // whiteout
// "SPECIAL should be used for files that are of
// a known type which cannot be expressed in the protocol"
return NET_SFTP_TYPE_SPECIAL;
default:
return NET_SFTP_TYPE_UNKNOWN;
}
}
/**
* Parse Longname
*
* SFTPv3 doesn't provide any easy way of identifying a file type. You could try to open
* a file as a directory and see if an error is returned or you could try to parse the
* SFTPv3-specific longname field of the SSH_FXP_NAME packet. That's what this function does.
* The result is returned using the
* {@link http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-5.2 SFTPv4 type constants}.
*
* If the longname is in an unrecognized format bool(false) is returned.
*
* @param string $longname
* @return mixed
* @access private
*/
function _parseLongname($longname)
{
// http://en.wikipedia.org/wiki/Unix_file_types
// http://en.wikipedia.org/wiki/Filesystem_permissions#Notation_of_traditional_Unix_permissions
if (preg_match('#^[^/]([r-][w-][xstST-]){3}#', $longname)) {
switch ($longname[0]) {
case '-':
return NET_SFTP_TYPE_REGULAR;
case 'd':
return NET_SFTP_TYPE_DIRECTORY;
case 'l':
return NET_SFTP_TYPE_SYMLINK;
default:
return NET_SFTP_TYPE_SPECIAL;
}
}
return false;
}
/**
* Sends SFTP Packets
*
* See '6. General Packet Format' of draft-ietf-secsh-filexfer-13 for more info.
*
* @param int $type
* @param string $data
* @param int $request_id
* @see self::_get_sftp_packet()
* @see self::_send_channel_packet()
* @return bool
* @access private
*/
function _send_sftp_packet($type, $data, $request_id = 1)
{
// in SSH2.php the timeout is cumulative per function call. eg. exec() will
// timeout after 10s. but for SFTP.php it's cumulative per packet
$this->curTimeout = $this->timeout;
$packet = $this->use_request_id ?
pack('NCNa*', strlen($data) + 5, $type, $request_id, $data) :
pack('NCa*', strlen($data) + 1, $type, $data);
$start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838
$result = $this->_send_channel_packet(self::CHANNEL, $packet);
$stop = strtok(microtime(), ' ') + strtok('');
if (defined('NET_SFTP_LOGGING')) {
$packet_type = '-> ' . $this->packet_types[$type] .
' (' . round($stop - $start, 4) . 's)';
if (NET_SFTP_LOGGING == self::LOG_REALTIME) {
switch (PHP_SAPI) {
case 'cli':
$start = $stop = "\r\n";
break;
default:
$start = '<pre>';
$stop = '</pre>';
}
echo $start . $this->_format_log(array($data), array($packet_type)) . $stop;
@flush();
@ob_flush();
} else {
$this->packet_type_log[] = $packet_type;
if (NET_SFTP_LOGGING == self::LOG_COMPLEX) {
$this->packet_log[] = $data;
}
}
}
return $result;
}
/**
* Resets a connection for re-use
*
* @param int $reason
* @access private
*/
function _reset_connection($reason)
{
parent::_reset_connection($reason);
$this->use_request_id = false;
$this->pwd = false;
$this->requestBuffer = array();
}
/**
* Receives SFTP Packets
*
* See '6. General Packet Format' of draft-ietf-secsh-filexfer-13 for more info.
*
* Incidentally, the number of SSH_MSG_CHANNEL_DATA messages has no bearing on the number of SFTP packets present.
* There can be one SSH_MSG_CHANNEL_DATA messages containing two SFTP packets or there can be two SSH_MSG_CHANNEL_DATA
* messages containing one SFTP packet.
*
* @see self::_send_sftp_packet()
* @return string
* @access private
*/
function _get_sftp_packet($request_id = null)
{
$this->channel_close = false;
if (isset($request_id) && isset($this->requestBuffer[$request_id])) {
$this->packet_type = $this->requestBuffer[$request_id]['packet_type'];
$temp = $this->requestBuffer[$request_id]['packet'];
unset($this->requestBuffer[$request_id]);
return $temp;
}
// in SSH2.php the timeout is cumulative per function call. eg. exec() will
// timeout after 10s. but for SFTP.php it's cumulative per packet
$this->curTimeout = $this->timeout;
$start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838
// SFTP packet length
while (strlen($this->packet_buffer) < 4) {
$temp = $this->_get_channel_packet(self::CHANNEL, true);
if ($temp === true) {
if ($this->channel_status[self::CHANNEL] === NET_SSH2_MSG_CHANNEL_CLOSE) {
$this->channel_close = true;
}
$this->packet_type = false;
$this->packet_buffer = '';
return false;
}
if ($temp === false) {
return false;
}
$this->packet_buffer.= $temp;
}
if (strlen($this->packet_buffer) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($this->packet_buffer, 4)));
$tempLength = $length;
$tempLength-= strlen($this->packet_buffer);
// 256 * 1024 is what SFTP_MAX_MSG_LENGTH is set to in OpenSSH's sftp-common.h
if (!$this->allow_arbitrary_length_packets && !$this->use_request_id && $tempLength > 256 * 1024) {
user_error('Invalid SFTP packet size');
return false;
}
// SFTP packet type and data payload
while ($tempLength > 0) {
$temp = $this->_get_channel_packet(self::CHANNEL, true);
if (is_bool($temp)) {
if ($temp && $this->channel_status[self::CHANNEL] === NET_SSH2_MSG_CHANNEL_CLOSE) {
$this->channel_close = true;
}
$this->packet_type = false;
$this->packet_buffer = '';
return false;
}
$this->packet_buffer.= $temp;
$tempLength-= strlen($temp);
}
$stop = strtok(microtime(), ' ') + strtok('');
$this->packet_type = ord($this->_string_shift($this->packet_buffer));
if ($this->use_request_id) {
extract(unpack('Npacket_id', $this->_string_shift($this->packet_buffer, 4))); // remove the request id
$length-= 5; // account for the request id and the packet type
} else {
$length-= 1; // account for the packet type
}
$packet = $this->_string_shift($this->packet_buffer, $length);
if (defined('NET_SFTP_LOGGING')) {
$packet_type = '<- ' . $this->packet_types[$this->packet_type] .
' (' . round($stop - $start, 4) . 's)';
if (NET_SFTP_LOGGING == self::LOG_REALTIME) {
switch (PHP_SAPI) {
case 'cli':
$start = $stop = "\r\n";
break;
default:
$start = '<pre>';
$stop = '</pre>';
}
echo $start . $this->_format_log(array($packet), array($packet_type)) . $stop;
@flush();
@ob_flush();
} else {
$this->packet_type_log[] = $packet_type;
if (NET_SFTP_LOGGING == self::LOG_COMPLEX) {
$this->packet_log[] = $packet;
}
}
}
if (isset($request_id) && $this->use_request_id && $packet_id != $request_id) {
$this->requestBuffer[$packet_id] = array(
'packet_type' => $this->packet_type,
'packet' => $packet
);
return $this->_get_sftp_packet($request_id);
}
return $packet;
}
/**
* Returns a log of the packets that have been sent and received.
*
* Returns a string if NET_SFTP_LOGGING == NET_SFTP_LOG_COMPLEX, an array if NET_SFTP_LOGGING == NET_SFTP_LOG_SIMPLE and false if !defined('NET_SFTP_LOGGING')
*
* @access public
* @return string or Array
*/
function getSFTPLog()
{
if (!defined('NET_SFTP_LOGGING')) {
return false;
}
switch (NET_SFTP_LOGGING) {
case self::LOG_COMPLEX:
return $this->_format_log($this->packet_log, $this->packet_type_log);
break;
//case self::LOG_SIMPLE:
default:
return $this->packet_type_log;
}
}
/**
* Returns all errors
*
* @return array
* @access public
*/
function getSFTPErrors()
{
return $this->sftp_errors;
}
/**
* Returns the last error
*
* @return string
* @access public
*/
function getLastSFTPError()
{
return count($this->sftp_errors) ? $this->sftp_errors[count($this->sftp_errors) - 1] : '';
}
/**
* Get supported SFTP versions
*
* @return array
* @access public
*/
function getSupportedVersions()
{
if (!($this->bitmap & SSH2::MASK_LOGIN)) {
return false;
}
if (!$this->partial_init) {
$this->_partial_init_sftp_connection();
}
$temp = array('version' => $this->defaultVersion);
if (isset($this->extensions['versions'])) {
$temp['extensions'] = $this->extensions['versions'];
}
return $temp;
}
/**
* Get supported SFTP versions
*
* @return array
* @access public
*/
function getNegotiatedVersion()
{
if (!$this->_precheck()) {
return false;
}
return $this->version;
}
/**
* Set preferred version
*
* If you're preferred version isn't supported then the highest supported
* version of SFTP will be utilized. Set to null or false or int(0) to
* unset the preferred version
*
* @param int $version
* @access public
*/
function setPreferredVersion($version)
{
$this->preferredVersion = $version;
}
/**
* Disconnect
*
* @param int $reason
* @return bool
* @access private
*/
function _disconnect($reason)
{
$this->pwd = false;
parent::_disconnect($reason);
}
/**
* Enable Date Preservation
*
* @access public
*/
function enableDatePreservation()
{
$this->preserveTime = true;
}
/**
* Disable Date Preservation
*
* @access public
*/
function disableDatePreservation()
{
$this->preserveTime = false;
}
}
PK ��$Z�|M�� �� phpseclib/phpseclib/Net/SSH2.phpnu �[��� <?php
/**
* Pure-PHP implementation of SSHv2.
*
* PHP version 5
*
* Here are some examples of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $ssh = new \phpseclib\Net\SSH2('www.domain.tld');
* if (!$ssh->login('username', 'password')) {
* exit('Login Failed');
* }
*
* echo $ssh->exec('pwd');
* echo $ssh->exec('ls -la');
* ?>
* </code>
*
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $key = new \phpseclib\Crypt\RSA();
* //$key->setPassword('whatever');
* $key->loadKey(file_get_contents('privatekey'));
*
* $ssh = new \phpseclib\Net\SSH2('www.domain.tld');
* if (!$ssh->login('username', $key)) {
* exit('Login Failed');
* }
*
* echo $ssh->read('username@username:~$');
* $ssh->write("ls -la\n");
* echo $ssh->read('username@username:~$');
* ?>
* </code>
*
* @category Net
* @package SSH2
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2007 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Net;
use phpseclib\Crypt\Base;
use phpseclib\Crypt\Blowfish;
use phpseclib\Crypt\Hash;
use phpseclib\Crypt\Random;
use phpseclib\Crypt\RC4;
use phpseclib\Crypt\Rijndael;
use phpseclib\Crypt\RSA;
use phpseclib\Crypt\TripleDES;
use phpseclib\Crypt\Twofish;
use phpseclib\Math\BigInteger; // Used to do Diffie-Hellman key exchange and DSA/RSA signature verification.
use phpseclib\System\SSH\Agent;
/**
* Pure-PHP implementation of SSHv2.
*
* @package SSH2
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class SSH2
{
/**#@+
* Compression Types
*
* @access private
*/
/**
* No compression
*/
const NET_SSH2_COMPRESSION_NONE = 1;
/**
* zlib compression
*/
const NET_SSH2_COMPRESSION_ZLIB = 2;
/**
* zlib@openssh.com
*/
const NET_SSH2_COMPRESSION_ZLIB_AT_OPENSSH = 3;
/**#@-*/
/**#@+
* Execution Bitmap Masks
*
* @see \phpseclib\Net\SSH2::bitmap
* @access private
*/
const MASK_CONSTRUCTOR = 0x00000001;
const MASK_CONNECTED = 0x00000002;
const MASK_LOGIN_REQ = 0x00000004;
const MASK_LOGIN = 0x00000008;
const MASK_SHELL = 0x00000010;
const MASK_WINDOW_ADJUST = 0x00000020;
/**#@-*/
/**#@+
* Channel constants
*
* RFC4254 refers not to client and server channels but rather to sender and recipient channels. we don't refer
* to them in that way because RFC4254 toggles the meaning. the client sends a SSH_MSG_CHANNEL_OPEN message with
* a sender channel and the server sends a SSH_MSG_CHANNEL_OPEN_CONFIRMATION in response, with a sender and a
* recepient channel. at first glance, you might conclude that SSH_MSG_CHANNEL_OPEN_CONFIRMATION's sender channel
* would be the same thing as SSH_MSG_CHANNEL_OPEN's sender channel, but it's not, per this snipet:
* The 'recipient channel' is the channel number given in the original
* open request, and 'sender channel' is the channel number allocated by
* the other side.
*
* @see \phpseclib\Net\SSH2::_send_channel_packet()
* @see \phpseclib\Net\SSH2::_get_channel_packet()
* @access private
*/
const CHANNEL_EXEC = 1; // PuTTy uses 0x100
const CHANNEL_SHELL = 2;
const CHANNEL_SUBSYSTEM = 3;
const CHANNEL_AGENT_FORWARD = 4;
const CHANNEL_KEEP_ALIVE = 5;
/**#@-*/
/**#@+
* @access public
* @see \phpseclib\Net\SSH2::getLog()
*/
/**
* Returns the message numbers
*/
const LOG_SIMPLE = 1;
/**
* Returns the message content
*/
const LOG_COMPLEX = 2;
/**
* Outputs the content real-time
*/
const LOG_REALTIME = 3;
/**
* Dumps the content real-time to a file
*/
const LOG_REALTIME_FILE = 4;
/**
* Make sure that the log never gets larger than this
*/
const LOG_MAX_SIZE = 1048576; // 1024 * 1024
/**#@-*/
/**#@+
* @access public
* @see \phpseclib\Net\SSH2::read()
*/
/**
* Returns when a string matching $expect exactly is found
*/
const READ_SIMPLE = 1;
/**
* Returns when a string matching the regular expression $expect is found
*/
const READ_REGEX = 2;
/**
* Returns whenever a data packet is received.
*
* Some data packets may only contain a single character so it may be necessary
* to call read() multiple times when using this option
*/
const READ_NEXT = 3;
/**#@-*/
/**
* The SSH identifier
*
* @var string
* @access private
*/
var $identifier;
/**
* The Socket Object
*
* @var object
* @access private
*/
var $fsock;
/**
* Execution Bitmap
*
* The bits that are set represent functions that have been called already. This is used to determine
* if a requisite function has been successfully executed. If not, an error should be thrown.
*
* @var int
* @access private
*/
var $bitmap = 0;
/**
* Error information
*
* @see self::getErrors()
* @see self::getLastError()
* @var string
* @access private
*/
var $errors = array();
/**
* Server Identifier
*
* @see self::getServerIdentification()
* @var array|false
* @access private
*/
var $server_identifier = false;
/**
* Key Exchange Algorithms
*
* @see self::getKexAlgorithims()
* @var array|false
* @access private
*/
var $kex_algorithms = false;
/**
* Key Exchange Algorithm
*
* @see self::getMethodsNegotiated()
* @var string|false
* @access private
*/
var $kex_algorithm = false;
/**
* Minimum Diffie-Hellman Group Bit Size in RFC 4419 Key Exchange Methods
*
* @see self::_key_exchange()
* @var int
* @access private
*/
var $kex_dh_group_size_min = 1536;
/**
* Preferred Diffie-Hellman Group Bit Size in RFC 4419 Key Exchange Methods
*
* @see self::_key_exchange()
* @var int
* @access private
*/
var $kex_dh_group_size_preferred = 2048;
/**
* Maximum Diffie-Hellman Group Bit Size in RFC 4419 Key Exchange Methods
*
* @see self::_key_exchange()
* @var int
* @access private
*/
var $kex_dh_group_size_max = 4096;
/**
* Server Host Key Algorithms
*
* @see self::getServerHostKeyAlgorithms()
* @var array|false
* @access private
*/
var $server_host_key_algorithms = false;
/**
* Encryption Algorithms: Client to Server
*
* @see self::getEncryptionAlgorithmsClient2Server()
* @var array|false
* @access private
*/
var $encryption_algorithms_client_to_server = false;
/**
* Encryption Algorithms: Server to Client
*
* @see self::getEncryptionAlgorithmsServer2Client()
* @var array|false
* @access private
*/
var $encryption_algorithms_server_to_client = false;
/**
* MAC Algorithms: Client to Server
*
* @see self::getMACAlgorithmsClient2Server()
* @var array|false
* @access private
*/
var $mac_algorithms_client_to_server = false;
/**
* MAC Algorithms: Server to Client
*
* @see self::getMACAlgorithmsServer2Client()
* @var array|false
* @access private
*/
var $mac_algorithms_server_to_client = false;
/**
* Compression Algorithms: Client to Server
*
* @see self::getCompressionAlgorithmsClient2Server()
* @var array|false
* @access private
*/
var $compression_algorithms_client_to_server = false;
/**
* Compression Algorithms: Server to Client
*
* @see self::getCompressionAlgorithmsServer2Client()
* @var array|false
* @access private
*/
var $compression_algorithms_server_to_client = false;
/**
* Languages: Server to Client
*
* @see self::getLanguagesServer2Client()
* @var array|false
* @access private
*/
var $languages_server_to_client = false;
/**
* Languages: Client to Server
*
* @see self::getLanguagesClient2Server()
* @var array|false
* @access private
*/
var $languages_client_to_server = false;
/**
* Preferred Algorithms
*
* @see self::setPreferredAlgorithms()
* @var array
* @access private
*/
var $preferred = array();
/**
* Block Size for Server to Client Encryption
*
* "Note that the length of the concatenation of 'packet_length',
* 'padding_length', 'payload', and 'random padding' MUST be a multiple
* of the cipher block size or 8, whichever is larger. This constraint
* MUST be enforced, even when using stream ciphers."
*
* -- http://tools.ietf.org/html/rfc4253#section-6
*
* @see self::__construct()
* @see self::_send_binary_packet()
* @var int
* @access private
*/
var $encrypt_block_size = 8;
/**
* Block Size for Client to Server Encryption
*
* @see self::__construct()
* @see self::_get_binary_packet()
* @var int
* @access private
*/
var $decrypt_block_size = 8;
/**
* Server to Client Encryption Object
*
* @see self::_get_binary_packet()
* @var object
* @access private
*/
var $decrypt = false;
/**
* Client to Server Encryption Object
*
* @see self::_send_binary_packet()
* @var object
* @access private
*/
var $encrypt = false;
/**
* Client to Server HMAC Object
*
* @see self::_send_binary_packet()
* @var object
* @access private
*/
var $hmac_create = false;
/**
* Server to Client HMAC Object
*
* @see self::_get_binary_packet()
* @var object
* @access private
*/
var $hmac_check = false;
/**
* Size of server to client HMAC
*
* We need to know how big the HMAC will be for the server to client direction so that we know how many bytes to read.
* For the client to server side, the HMAC object will make the HMAC as long as it needs to be. All we need to do is
* append it.
*
* @see self::_get_binary_packet()
* @var int
* @access private
*/
var $hmac_size = false;
/**
* Server Public Host Key
*
* @see self::getServerPublicHostKey()
* @var string
* @access private
*/
var $server_public_host_key;
/**
* Session identifier
*
* "The exchange hash H from the first key exchange is additionally
* used as the session identifier, which is a unique identifier for
* this connection."
*
* -- http://tools.ietf.org/html/rfc4253#section-7.2
*
* @see self::_key_exchange()
* @var string
* @access private
*/
var $session_id = false;
/**
* Exchange hash
*
* The current exchange hash
*
* @see self::_key_exchange()
* @var string
* @access private
*/
var $exchange_hash = false;
/**
* Message Numbers
*
* @see self::__construct()
* @var array
* @access private
*/
var $message_numbers = array();
/**
* Disconnection Message 'reason codes' defined in RFC4253
*
* @see self::__construct()
* @var array
* @access private
*/
var $disconnect_reasons = array();
/**
* SSH_MSG_CHANNEL_OPEN_FAILURE 'reason codes', defined in RFC4254
*
* @see self::__construct()
* @var array
* @access private
*/
var $channel_open_failure_reasons = array();
/**
* Terminal Modes
*
* @link http://tools.ietf.org/html/rfc4254#section-8
* @see self::__construct()
* @var array
* @access private
*/
var $terminal_modes = array();
/**
* SSH_MSG_CHANNEL_EXTENDED_DATA's data_type_codes
*
* @link http://tools.ietf.org/html/rfc4254#section-5.2
* @see self::__construct()
* @var array
* @access private
*/
var $channel_extended_data_type_codes = array();
/**
* Send Sequence Number
*
* See 'Section 6.4. Data Integrity' of rfc4253 for more info.
*
* @see self::_send_binary_packet()
* @var int
* @access private
*/
var $send_seq_no = 0;
/**
* Get Sequence Number
*
* See 'Section 6.4. Data Integrity' of rfc4253 for more info.
*
* @see self::_get_binary_packet()
* @var int
* @access private
*/
var $get_seq_no = 0;
/**
* Server Channels
*
* Maps client channels to server channels
*
* @see self::_get_channel_packet()
* @see self::exec()
* @var array
* @access private
*/
var $server_channels = array();
/**
* Channel Buffers
*
* If a client requests a packet from one channel but receives two packets from another those packets should
* be placed in a buffer
*
* @see self::_get_channel_packet()
* @see self::exec()
* @var array
* @access private
*/
var $channel_buffers = array();
/**
* Channel Status
*
* Contains the type of the last sent message
*
* @see self::_get_channel_packet()
* @var array
* @access private
*/
var $channel_status = array();
/**
* Packet Size
*
* Maximum packet size indexed by channel
*
* @see self::_send_channel_packet()
* @var array
* @access private
*/
var $packet_size_client_to_server = array();
/**
* Message Number Log
*
* @see self::getLog()
* @var array
* @access private
*/
var $message_number_log = array();
/**
* Message Log
*
* @see self::getLog()
* @var array
* @access private
*/
var $message_log = array();
/**
* The Window Size
*
* Bytes the other party can send before it must wait for the window to be adjusted (0x7FFFFFFF = 2GB)
*
* @var int
* @see self::_send_channel_packet()
* @see self::exec()
* @access private
*/
var $window_size = 0x7FFFFFFF;
/**
* What we resize the window to
*
* When PuTTY resizes the window it doesn't add an additional 0x7FFFFFFF bytes - it adds 0x40000000 bytes.
* Some SFTP clients (GoAnywhere) don't support adding 0x7FFFFFFF to the window size after the fact so
* we'll just do what PuTTY does
*
* @var int
* @see self::_send_channel_packet()
* @see self::exec()
* @access private
*/
var $window_resize = 0x40000000;
/**
* Window size, server to client
*
* Window size indexed by channel
*
* @see self::_send_channel_packet()
* @var array
* @access private
*/
var $window_size_server_to_client = array();
/**
* Window size, client to server
*
* Window size indexed by channel
*
* @see self::_get_channel_packet()
* @var array
* @access private
*/
var $window_size_client_to_server = array();
/**
* Server signature
*
* Verified against $this->session_id
*
* @see self::getServerPublicHostKey()
* @var string
* @access private
*/
var $signature = '';
/**
* Server signature format
*
* ssh-rsa or ssh-dss.
*
* @see self::getServerPublicHostKey()
* @var string
* @access private
*/
var $signature_format = '';
/**
* Interactive Buffer
*
* @see self::read()
* @var array
* @access private
*/
var $interactiveBuffer = '';
/**
* Current log size
*
* Should never exceed self::LOG_MAX_SIZE
*
* @see self::_send_binary_packet()
* @see self::_get_binary_packet()
* @var int
* @access private
*/
var $log_size;
/**
* Timeout
*
* @see self::setTimeout()
* @access private
*/
var $timeout;
/**
* Current Timeout
*
* @see self::_get_channel_packet()
* @access private
*/
var $curTimeout;
/**
* Keep Alive Interval
*
* @see self::setKeepAlive()
* @access private
*/
var $keepAlive;
/**
* Real-time log file pointer
*
* @see self::_append_log()
* @var resource
* @access private
*/
var $realtime_log_file;
/**
* Real-time log file size
*
* @see self::_append_log()
* @var int
* @access private
*/
var $realtime_log_size;
/**
* Has the signature been validated?
*
* @see self::getServerPublicHostKey()
* @var bool
* @access private
*/
var $signature_validated = false;
/**
* Real-time log file wrap boolean
*
* @see self::_append_log()
* @access private
*/
var $realtime_log_wrap;
/**
* Flag to suppress stderr from output
*
* @see self::enableQuietMode()
* @access private
*/
var $quiet_mode = false;
/**
* Time of first network activity
*
* @var int
* @access private
*/
var $last_packet;
/**
* Exit status returned from ssh if any
*
* @var int
* @access private
*/
var $exit_status;
/**
* Flag to request a PTY when using exec()
*
* @var bool
* @see self::enablePTY()
* @access private
*/
var $request_pty = false;
/**
* Flag set while exec() is running when using enablePTY()
*
* @var bool
* @access private
*/
var $in_request_pty_exec = false;
/**
* Flag set after startSubsystem() is called
*
* @var bool
* @access private
*/
var $in_subsystem;
/**
* Contents of stdError
*
* @var string
* @access private
*/
var $stdErrorLog;
/**
* The Last Interactive Response
*
* @see self::_keyboard_interactive_process()
* @var string
* @access private
*/
var $last_interactive_response = '';
/**
* Keyboard Interactive Request / Responses
*
* @see self::_keyboard_interactive_process()
* @var array
* @access private
*/
var $keyboard_requests_responses = array();
/**
* Banner Message
*
* Quoting from the RFC, "in some jurisdictions, sending a warning message before
* authentication may be relevant for getting legal protection."
*
* @see self::_filter()
* @see self::getBannerMessage()
* @var string
* @access private
*/
var $banner_message = '';
/**
* Did read() timeout or return normally?
*
* @see self::isTimeout()
* @var bool
* @access private
*/
var $is_timeout = false;
/**
* Log Boundary
*
* @see self::_format_log()
* @var string
* @access private
*/
var $log_boundary = ':';
/**
* Log Long Width
*
* @see self::_format_log()
* @var int
* @access private
*/
var $log_long_width = 65;
/**
* Log Short Width
*
* @see self::_format_log()
* @var int
* @access private
*/
var $log_short_width = 16;
/**
* Hostname
*
* @see self::__construct()
* @see self::_connect()
* @var string
* @access private
*/
var $host;
/**
* Port Number
*
* @see self::__construct()
* @see self::_connect()
* @var int
* @access private
*/
var $port;
/**
* Number of columns for terminal window size
*
* @see self::getWindowColumns()
* @see self::setWindowColumns()
* @see self::setWindowSize()
* @var int
* @access private
*/
var $windowColumns = 80;
/**
* Number of columns for terminal window size
*
* @see self::getWindowRows()
* @see self::setWindowRows()
* @see self::setWindowSize()
* @var int
* @access private
*/
var $windowRows = 24;
/**
* Crypto Engine
*
* @see self::setCryptoEngine()
* @see self::_key_exchange()
* @var int
* @access private
*/
var $crypto_engine = false;
/**
* A System_SSH_Agent for use in the SSH2 Agent Forwarding scenario
*
* @var System_SSH_Agent
* @access private
*/
var $agent;
/**
* Send the identification string first?
*
* @var bool
* @access private
*/
var $send_id_string_first = true;
/**
* Send the key exchange initiation packet first?
*
* @var bool
* @access private
*/
var $send_kex_first = true;
/**
* Some versions of OpenSSH incorrectly calculate the key size
*
* @var bool
* @access private
*/
var $bad_key_size_fix = false;
/**
* Should we try to re-connect to re-establish keys?
*
* @var bool
* @access private
*/
var $retry_connect = false;
/**
* Binary Packet Buffer
*
* @var string|false
* @access private
*/
var $binary_packet_buffer = false;
/**
* Preferred Signature Format
*
* @var string|false
* @access private
*/
var $preferred_signature_format = false;
/**
* Authentication Credentials
*
* @var array
* @access private
*/
var $auth = array();
/**
* The authentication methods that may productively continue authentication.
*
* @see https://tools.ietf.org/html/rfc4252#section-5.1
* @var array|null
* @access private
*/
var $auth_methods_to_continue = null;
/**
* Compression method
*
* @var int
* @access private
*/
var $compress = self::NET_SSH2_COMPRESSION_NONE;
/**
* Decompression method
*
* @var resource|object
* @access private
*/
var $decompress = self::NET_SSH2_COMPRESSION_NONE;
/**
* Compression context
*
* @var int
* @access private
*/
var $compress_context;
/**
* Decompression context
*
* @var resource|object
* @access private
*/
var $decompress_context;
/**
* Regenerate Compression Context
*
* @var bool
* @access private
*/
var $regenerate_compression_context = false;
/**
* Regenerate Decompression Context
*
* @var bool
* @access private
*/
var $regenerate_decompression_context = false;
/**
* Smart multi-factor authentication flag
*
* @var bool
* @access private
*/
var $smartMFA = true;
/**
* Default Constructor.
*
* $host can either be a string, representing the host, or a stream resource.
*
* @param mixed $host
* @param int $port
* @param int $timeout
* @see self::login()
* @return \phpseclib\Net\SSH2
* @access public
*/
function __construct($host, $port = 22, $timeout = 10)
{
$this->message_numbers = array(
1 => 'NET_SSH2_MSG_DISCONNECT',
2 => 'NET_SSH2_MSG_IGNORE',
3 => 'NET_SSH2_MSG_UNIMPLEMENTED',
4 => 'NET_SSH2_MSG_DEBUG',
5 => 'NET_SSH2_MSG_SERVICE_REQUEST',
6 => 'NET_SSH2_MSG_SERVICE_ACCEPT',
20 => 'NET_SSH2_MSG_KEXINIT',
21 => 'NET_SSH2_MSG_NEWKEYS',
30 => 'NET_SSH2_MSG_KEXDH_INIT',
31 => 'NET_SSH2_MSG_KEXDH_REPLY',
50 => 'NET_SSH2_MSG_USERAUTH_REQUEST',
51 => 'NET_SSH2_MSG_USERAUTH_FAILURE',
52 => 'NET_SSH2_MSG_USERAUTH_SUCCESS',
53 => 'NET_SSH2_MSG_USERAUTH_BANNER',
80 => 'NET_SSH2_MSG_GLOBAL_REQUEST',
81 => 'NET_SSH2_MSG_REQUEST_SUCCESS',
82 => 'NET_SSH2_MSG_REQUEST_FAILURE',
90 => 'NET_SSH2_MSG_CHANNEL_OPEN',
91 => 'NET_SSH2_MSG_CHANNEL_OPEN_CONFIRMATION',
92 => 'NET_SSH2_MSG_CHANNEL_OPEN_FAILURE',
93 => 'NET_SSH2_MSG_CHANNEL_WINDOW_ADJUST',
94 => 'NET_SSH2_MSG_CHANNEL_DATA',
95 => 'NET_SSH2_MSG_CHANNEL_EXTENDED_DATA',
96 => 'NET_SSH2_MSG_CHANNEL_EOF',
97 => 'NET_SSH2_MSG_CHANNEL_CLOSE',
98 => 'NET_SSH2_MSG_CHANNEL_REQUEST',
99 => 'NET_SSH2_MSG_CHANNEL_SUCCESS',
100 => 'NET_SSH2_MSG_CHANNEL_FAILURE'
);
$this->disconnect_reasons = array(
1 => 'NET_SSH2_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT',
2 => 'NET_SSH2_DISCONNECT_PROTOCOL_ERROR',
3 => 'NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED',
4 => 'NET_SSH2_DISCONNECT_RESERVED',
5 => 'NET_SSH2_DISCONNECT_MAC_ERROR',
6 => 'NET_SSH2_DISCONNECT_COMPRESSION_ERROR',
7 => 'NET_SSH2_DISCONNECT_SERVICE_NOT_AVAILABLE',
8 => 'NET_SSH2_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED',
9 => 'NET_SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE',
10 => 'NET_SSH2_DISCONNECT_CONNECTION_LOST',
11 => 'NET_SSH2_DISCONNECT_BY_APPLICATION',
12 => 'NET_SSH2_DISCONNECT_TOO_MANY_CONNECTIONS',
13 => 'NET_SSH2_DISCONNECT_AUTH_CANCELLED_BY_USER',
14 => 'NET_SSH2_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE',
15 => 'NET_SSH2_DISCONNECT_ILLEGAL_USER_NAME'
);
$this->channel_open_failure_reasons = array(
1 => 'NET_SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED'
);
$this->terminal_modes = array(
0 => 'NET_SSH2_TTY_OP_END'
);
$this->channel_extended_data_type_codes = array(
1 => 'NET_SSH2_EXTENDED_DATA_STDERR'
);
$this->_define_array(
$this->message_numbers,
$this->disconnect_reasons,
$this->channel_open_failure_reasons,
$this->terminal_modes,
$this->channel_extended_data_type_codes,
array(60 => 'NET_SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ'),
array(60 => 'NET_SSH2_MSG_USERAUTH_PK_OK'),
array(60 => 'NET_SSH2_MSG_USERAUTH_INFO_REQUEST',
61 => 'NET_SSH2_MSG_USERAUTH_INFO_RESPONSE'),
// RFC 4419 - diffie-hellman-group-exchange-sha{1,256}
array(30 => 'NET_SSH2_MSG_KEXDH_GEX_REQUEST_OLD',
31 => 'NET_SSH2_MSG_KEXDH_GEX_GROUP',
32 => 'NET_SSH2_MSG_KEXDH_GEX_INIT',
33 => 'NET_SSH2_MSG_KEXDH_GEX_REPLY',
34 => 'NET_SSH2_MSG_KEXDH_GEX_REQUEST'),
// RFC 5656 - Elliptic Curves (for curve25519-sha256@libssh.org)
array(30 => 'NET_SSH2_MSG_KEX_ECDH_INIT',
31 => 'NET_SSH2_MSG_KEX_ECDH_REPLY')
);
if (is_resource($host)) {
$this->fsock = $host;
return;
}
if (is_string($host)) {
$this->host = $host;
$this->port = $port;
$this->timeout = $timeout;
}
}
/**
* Set Crypto Engine Mode
*
* Possible $engine values:
* CRYPT_MODE_INTERNAL, CRYPT_MODE_MCRYPT
*
* @param int $engine
* @access public
*/
function setCryptoEngine($engine)
{
$this->crypto_engine = $engine;
}
/**
* Send Identification String First
*
* https://tools.ietf.org/html/rfc4253#section-4.2 says "when the connection has been established,
* both sides MUST send an identification string". It does not say which side sends it first. In
* theory it shouldn't matter but it is a fact of life that some SSH servers are simply buggy
*
* @access public
*/
function sendIdentificationStringFirst()
{
$this->send_id_string_first = true;
}
/**
* Send Identification String Last
*
* https://tools.ietf.org/html/rfc4253#section-4.2 says "when the connection has been established,
* both sides MUST send an identification string". It does not say which side sends it first. In
* theory it shouldn't matter but it is a fact of life that some SSH servers are simply buggy
*
* @access public
*/
function sendIdentificationStringLast()
{
$this->send_id_string_first = false;
}
/**
* Send SSH_MSG_KEXINIT First
*
* https://tools.ietf.org/html/rfc4253#section-7.1 says "key exchange begins by each sending
* sending the [SSH_MSG_KEXINIT] packet". It does not say which side sends it first. In theory
* it shouldn't matter but it is a fact of life that some SSH servers are simply buggy
*
* @access public
*/
function sendKEXINITFirst()
{
$this->send_kex_first = true;
}
/**
* Send SSH_MSG_KEXINIT Last
*
* https://tools.ietf.org/html/rfc4253#section-7.1 says "key exchange begins by each sending
* sending the [SSH_MSG_KEXINIT] packet". It does not say which side sends it first. In theory
* it shouldn't matter but it is a fact of life that some SSH servers are simply buggy
*
* @access public
*/
function sendKEXINITLast()
{
$this->send_kex_first = false;
}
/**
* Connect to an SSHv2 server
*
* @return bool
* @access private
*/
function _connect()
{
if ($this->bitmap & self::MASK_CONSTRUCTOR) {
return false;
}
$this->bitmap |= self::MASK_CONSTRUCTOR;
$this->curTimeout = $this->timeout;
$this->last_packet = microtime(true);
if (!is_resource($this->fsock)) {
$start = microtime(true);
// with stream_select a timeout of 0 means that no timeout takes place;
// with fsockopen a timeout of 0 means that you instantly timeout
// to resolve this incompatibility a timeout of 100,000 will be used for fsockopen if timeout is 0
$this->fsock = @fsockopen($this->host, $this->port, $errno, $errstr, $this->curTimeout == 0 ? 100000 : $this->curTimeout);
if (!$this->fsock) {
$host = $this->host . ':' . $this->port;
user_error(rtrim("Cannot connect to $host. Error $errno. $errstr"));
return false;
}
$elapsed = microtime(true) - $start;
if ($this->curTimeout) {
$this->curTimeout-= $elapsed;
if ($this->curTimeout < 0) {
$this->is_timeout = true;
return false;
}
}
}
$this->identifier = $this->_generate_identifier();
if ($this->send_id_string_first) {
fputs($this->fsock, $this->identifier . "\r\n");
}
/* According to the SSH2 specs,
"The server MAY send other lines of data before sending the version
string. Each line SHOULD be terminated by a Carriage Return and Line
Feed. Such lines MUST NOT begin with "SSH-", and SHOULD be encoded
in ISO-10646 UTF-8 [RFC3629] (language is not specified). Clients
MUST be able to process such lines." */
$data = '';
while (!feof($this->fsock) && !preg_match('#(.*)^(SSH-(\d\.\d+).*)#ms', $data, $matches)) {
$line = '';
while (true) {
if ($this->curTimeout) {
if ($this->curTimeout < 0) {
$this->is_timeout = true;
return false;
}
$read = array($this->fsock);
$write = $except = null;
$start = microtime(true);
$sec = (int) floor($this->curTimeout);
$usec = (int) (1000000 * ($this->curTimeout - $sec));
// on windows this returns a "Warning: Invalid CRT parameters detected" error
// the !count() is done as a workaround for <https://bugs.php.net/42682>
if (!@stream_select($read, $write, $except, $sec, $usec) && !count($read)) {
$this->is_timeout = true;
return false;
}
$elapsed = microtime(true) - $start;
$this->curTimeout-= $elapsed;
}
$temp = stream_get_line($this->fsock, 255, "\n");
if (strlen($temp) == 255) {
continue;
}
if ($temp === false) {
return false;
}
$line.= "$temp\n";
// quoting RFC4253, "Implementers who wish to maintain
// compatibility with older, undocumented versions of this protocol may
// want to process the identification string without expecting the
// presence of the carriage return character for reasons described in
// Section 5 of this document."
//if (substr($line, -2) == "\r\n") {
// break;
//}
break;
}
$data.= $line;
}
if (feof($this->fsock)) {
$this->bitmap = 0;
user_error('Connection closed by server');
return false;
}
$extra = $matches[1];
if (defined('NET_SSH2_LOGGING')) {
$this->_append_log('<-', $matches[0]);
$this->_append_log('->', $this->identifier . "\r\n");
}
$this->server_identifier = trim($temp, "\r\n");
if (strlen($extra)) {
$this->errors[] = $data;
}
if (version_compare($matches[3], '1.99', '<')) {
user_error("Cannot connect to SSH $matches[3] servers");
return false;
}
if (!$this->send_id_string_first) {
fputs($this->fsock, $this->identifier . "\r\n");
}
if (!$this->send_kex_first) {
$response = $this->_get_binary_packet();
if ($response === false) {
$this->bitmap = 0;
user_error('Connection closed by server');
return false;
}
if (!strlen($response) || ord($response[0]) != NET_SSH2_MSG_KEXINIT) {
user_error('Expected SSH_MSG_KEXINIT');
return false;
}
if (!$this->_key_exchange($response)) {
return false;
}
}
if ($this->send_kex_first && !$this->_key_exchange()) {
return false;
}
$this->bitmap|= self::MASK_CONNECTED;
return true;
}
/**
* Generates the SSH identifier
*
* You should overwrite this method in your own class if you want to use another identifier
*
* @access protected
* @return string
*/
function _generate_identifier()
{
$identifier = 'SSH-2.0-phpseclib_2.0';
$ext = array();
if (function_exists('sodium_crypto_box_publickey_from_secretkey')) {
$ext[] = 'libsodium';
}
if (extension_loaded('openssl')) {
$ext[] = 'openssl';
} elseif (extension_loaded('mcrypt')) {
$ext[] = 'mcrypt';
}
if (extension_loaded('gmp')) {
$ext[] = 'gmp';
} elseif (extension_loaded('bcmath')) {
$ext[] = 'bcmath';
}
if (!empty($ext)) {
$identifier .= ' (' . implode(', ', $ext) . ')';
}
return $identifier;
}
/**
* Key Exchange
*
* @param string $kexinit_payload_server optional
* @access private
*/
function _key_exchange($kexinit_payload_server = false)
{
$preferred = $this->preferred;
$send_kex = true;
$kex_algorithms = isset($preferred['kex']) ?
$preferred['kex'] :
$this->getSupportedKEXAlgorithms();
$server_host_key_algorithms = isset($preferred['hostkey']) ?
$preferred['hostkey'] :
$this->getSupportedHostKeyAlgorithms();
$s2c_encryption_algorithms = isset($preferred['server_to_client']['crypt']) ?
$preferred['server_to_client']['crypt'] :
$this->getSupportedEncryptionAlgorithms();
$c2s_encryption_algorithms = isset($preferred['client_to_server']['crypt']) ?
$preferred['client_to_server']['crypt'] :
$this->getSupportedEncryptionAlgorithms();
$s2c_mac_algorithms = isset($preferred['server_to_client']['mac']) ?
$preferred['server_to_client']['mac'] :
$this->getSupportedMACAlgorithms();
$c2s_mac_algorithms = isset($preferred['client_to_server']['mac']) ?
$preferred['client_to_server']['mac'] :
$this->getSupportedMACAlgorithms();
$s2c_compression_algorithms = isset($preferred['server_to_client']['comp']) ?
$preferred['server_to_client']['comp'] :
$this->getSupportedCompressionAlgorithms();
$c2s_compression_algorithms = isset($preferred['client_to_server']['comp']) ?
$preferred['client_to_server']['comp'] :
$this->getSupportedCompressionAlgorithms();
// some SSH servers have buggy implementations of some of the above algorithms
switch (true) {
case $this->server_identifier == 'SSH-2.0-SSHD':
case substr($this->server_identifier, 0, 13) == 'SSH-2.0-DLINK':
if (!isset($preferred['server_to_client']['mac'])) {
$s2c_mac_algorithms = array_values(array_diff(
$s2c_mac_algorithms,
array('hmac-sha1-96', 'hmac-md5-96')
));
}
if (!isset($preferred['client_to_server']['mac'])) {
$c2s_mac_algorithms = array_values(array_diff(
$c2s_mac_algorithms,
array('hmac-sha1-96', 'hmac-md5-96')
));
}
}
$str_kex_algorithms = implode(',', $kex_algorithms);
$str_server_host_key_algorithms = implode(',', $server_host_key_algorithms);
$encryption_algorithms_server_to_client = implode(',', $s2c_encryption_algorithms);
$encryption_algorithms_client_to_server = implode(',', $c2s_encryption_algorithms);
$mac_algorithms_server_to_client = implode(',', $s2c_mac_algorithms);
$mac_algorithms_client_to_server = implode(',', $c2s_mac_algorithms);
$compression_algorithms_server_to_client = implode(',', $s2c_compression_algorithms);
$compression_algorithms_client_to_server = implode(',', $c2s_compression_algorithms);
$client_cookie = Random::string(16);
$kexinit_payload_client = pack(
'Ca*Na*Na*Na*Na*Na*Na*Na*Na*Na*Na*CN',
NET_SSH2_MSG_KEXINIT,
$client_cookie,
strlen($str_kex_algorithms),
$str_kex_algorithms,
strlen($str_server_host_key_algorithms),
$str_server_host_key_algorithms,
strlen($encryption_algorithms_client_to_server),
$encryption_algorithms_client_to_server,
strlen($encryption_algorithms_server_to_client),
$encryption_algorithms_server_to_client,
strlen($mac_algorithms_client_to_server),
$mac_algorithms_client_to_server,
strlen($mac_algorithms_server_to_client),
$mac_algorithms_server_to_client,
strlen($compression_algorithms_client_to_server),
$compression_algorithms_client_to_server,
strlen($compression_algorithms_server_to_client),
$compression_algorithms_server_to_client,
0,
'',
0,
'',
0,
0
);
if ($kexinit_payload_server === false) {
if (!$this->_send_binary_packet($kexinit_payload_client)) {
return false;
}
$kexinit_payload_server = $this->_get_binary_packet();
if ($kexinit_payload_server === false) {
$this->bitmap = 0;
user_error('Connection closed by server');
return false;
}
if (!strlen($kexinit_payload_server) || ord($kexinit_payload_server[0]) != NET_SSH2_MSG_KEXINIT) {
user_error('Expected SSH_MSG_KEXINIT');
return false;
}
$send_kex = false;
}
$response = $kexinit_payload_server;
$this->_string_shift($response, 1); // skip past the message number (it should be SSH_MSG_KEXINIT)
$server_cookie = $this->_string_shift($response, 16);
if (strlen($response) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($response, 4));
$this->kex_algorithms = explode(',', $this->_string_shift($response, $temp['length']));
if (strlen($response) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($response, 4));
$this->server_host_key_algorithms = explode(',', $this->_string_shift($response, $temp['length']));
if (strlen($response) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($response, 4));
$this->encryption_algorithms_client_to_server = explode(',', $this->_string_shift($response, $temp['length']));
if (strlen($response) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($response, 4));
$this->encryption_algorithms_server_to_client = explode(',', $this->_string_shift($response, $temp['length']));
if (strlen($response) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($response, 4));
$this->mac_algorithms_client_to_server = explode(',', $this->_string_shift($response, $temp['length']));
if (strlen($response) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($response, 4));
$this->mac_algorithms_server_to_client = explode(',', $this->_string_shift($response, $temp['length']));
if (strlen($response) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($response, 4));
$this->compression_algorithms_client_to_server = explode(',', $this->_string_shift($response, $temp['length']));
if (strlen($response) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($response, 4));
$this->compression_algorithms_server_to_client = explode(',', $this->_string_shift($response, $temp['length']));
if (strlen($response) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($response, 4));
$this->languages_client_to_server = explode(',', $this->_string_shift($response, $temp['length']));
if (strlen($response) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($response, 4));
$this->languages_server_to_client = explode(',', $this->_string_shift($response, $temp['length']));
if (!strlen($response)) {
return false;
}
extract(unpack('Cfirst_kex_packet_follows', $this->_string_shift($response, 1)));
$first_kex_packet_follows = $first_kex_packet_follows != 0;
if ($send_kex && !$this->_send_binary_packet($kexinit_payload_client)) {
return false;
}
// we need to decide upon the symmetric encryption algorithms before we do the diffie-hellman key exchange
// we don't initialize any crypto-objects, yet - we do that, later. for now, we need the lengths to make the
// diffie-hellman key exchange as fast as possible
$decrypt = $this->_array_intersect_first($s2c_encryption_algorithms, $this->encryption_algorithms_server_to_client);
$decryptKeyLength = $this->_encryption_algorithm_to_key_size($decrypt);
if ($decryptKeyLength === null) {
user_error('No compatible server to client encryption algorithms found');
return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
}
$encrypt = $this->_array_intersect_first($c2s_encryption_algorithms, $this->encryption_algorithms_client_to_server);
$encryptKeyLength = $this->_encryption_algorithm_to_key_size($encrypt);
if ($encryptKeyLength === null) {
user_error('No compatible client to server encryption algorithms found');
return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
}
// through diffie-hellman key exchange a symmetric key is obtained
$this->kex_algorithm = $kex_algorithm = $this->_array_intersect_first($kex_algorithms, $this->kex_algorithms);
if ($kex_algorithm === false) {
user_error('No compatible key exchange algorithms found');
return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
}
$server_host_key_algorithm = $this->_array_intersect_first($server_host_key_algorithms, $this->server_host_key_algorithms);
if ($server_host_key_algorithm === false) {
user_error('No compatible server host key algorithms found');
return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
}
$mac_algorithm_in = $this->_array_intersect_first($s2c_mac_algorithms, $this->mac_algorithms_server_to_client);
if ($mac_algorithm_in === false) {
user_error('No compatible server to client message authentication algorithms found');
return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
}
$compression_map = array(
'none' => self::NET_SSH2_COMPRESSION_NONE,
'zlib' => self::NET_SSH2_COMPRESSION_ZLIB,
'zlib@openssh.com' => self::NET_SSH2_COMPRESSION_ZLIB_AT_OPENSSH
);
$compression_algorithm_out = $this->_array_intersect_first($c2s_compression_algorithms, $this->compression_algorithms_client_to_server);
if ($compression_algorithm_out === false) {
user_error('No compatible client to server compression algorithms found');
return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
}
$this->compress = $compression_map[$compression_algorithm_out];
$compression_algorithm_in = $this->_array_intersect_first($s2c_compression_algorithms, $this->compression_algorithms_server_to_client);
if ($compression_algorithm_in === false) {
user_error('No compatible server to client compression algorithms found');
return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
}
$this->decompress = $compression_map[$compression_algorithm_in];
// Only relevant in diffie-hellman-group-exchange-sha{1,256}, otherwise empty.
$exchange_hash_rfc4419 = '';
if ($kex_algorithm === 'curve25519-sha256@libssh.org') {
$x = Random::string(32);
$eBytes = sodium_crypto_box_publickey_from_secretkey($x);
$clientKexInitMessage = 'NET_SSH2_MSG_KEX_ECDH_INIT';
$serverKexReplyMessage = 'NET_SSH2_MSG_KEX_ECDH_REPLY';
$kexHash = new Hash('sha256');
} else {
if (strpos($kex_algorithm, 'diffie-hellman-group-exchange') === 0) {
$dh_group_sizes_packed = pack(
'NNN',
$this->kex_dh_group_size_min,
$this->kex_dh_group_size_preferred,
$this->kex_dh_group_size_max
);
$packet = pack(
'Ca*',
NET_SSH2_MSG_KEXDH_GEX_REQUEST,
$dh_group_sizes_packed
);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$this->_updateLogHistory('UNKNOWN (34)', 'NET_SSH2_MSG_KEXDH_GEX_REQUEST');
$response = $this->_get_binary_packet();
if ($response === false) {
$this->bitmap = 0;
user_error('Connection closed by server');
return false;
}
extract(unpack('Ctype', $this->_string_shift($response, 1)));
if ($type != NET_SSH2_MSG_KEXDH_GEX_GROUP) {
user_error('Expected SSH_MSG_KEX_DH_GEX_GROUP');
return false;
}
$this->_updateLogHistory('NET_SSH2_MSG_KEXDH_REPLY', 'NET_SSH2_MSG_KEXDH_GEX_GROUP');
if (strlen($response) < 4) {
return false;
}
extract(unpack('NprimeLength', $this->_string_shift($response, 4)));
$primeBytes = $this->_string_shift($response, $primeLength);
$prime = new BigInteger($primeBytes, -256);
if (strlen($response) < 4) {
return false;
}
extract(unpack('NgLength', $this->_string_shift($response, 4)));
$gBytes = $this->_string_shift($response, $gLength);
$g = new BigInteger($gBytes, -256);
$exchange_hash_rfc4419 = pack(
'a*Na*Na*',
$dh_group_sizes_packed,
$primeLength,
$primeBytes,
$gLength,
$gBytes
);
$clientKexInitMessage = 'NET_SSH2_MSG_KEXDH_GEX_INIT';
$serverKexReplyMessage = 'NET_SSH2_MSG_KEXDH_GEX_REPLY';
} else {
switch ($kex_algorithm) {
// see http://tools.ietf.org/html/rfc2409#section-6.2 and
// http://tools.ietf.org/html/rfc2412, appendex E
case 'diffie-hellman-group1-sha1':
$prime = 'FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74' .
'020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F1437' .
'4FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED' .
'EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF';
break;
// see http://tools.ietf.org/html/rfc3526#section-3
case 'diffie-hellman-group14-sha1':
$prime = 'FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74' .
'020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F1437' .
'4FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED' .
'EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3DC2007CB8A163BF05' .
'98DA48361C55D39A69163FA8FD24CF5F83655D23DCA3AD961C62F356208552BB' .
'9ED529077096966D670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B' .
'E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718' .
'3995497CEA956AE515D2261898FA051015728E5A8AACAA68FFFFFFFFFFFFFFFF';
break;
}
// For both diffie-hellman-group1-sha1 and diffie-hellman-group14-sha1
// the generator field element is 2 (decimal) and the hash function is sha1.
$g = new BigInteger(2);
$prime = new BigInteger($prime, 16);
$clientKexInitMessage = 'NET_SSH2_MSG_KEXDH_INIT';
$serverKexReplyMessage = 'NET_SSH2_MSG_KEXDH_REPLY';
}
switch ($kex_algorithm) {
case 'diffie-hellman-group-exchange-sha256':
$kexHash = new Hash('sha256');
break;
default:
$kexHash = new Hash('sha1');
}
/* To increase the speed of the key exchange, both client and server may
reduce the size of their private exponents. It should be at least
twice as long as the key material that is generated from the shared
secret. For more details, see the paper by van Oorschot and Wiener
[VAN-OORSCHOT].
-- http://tools.ietf.org/html/rfc4419#section-6.2 */
$one = new BigInteger(1);
$keyLength = min($kexHash->getLength(), max($encryptKeyLength, $decryptKeyLength));
$max = $one->bitwise_leftShift(16 * $keyLength); // 2 * 8 * $keyLength
$max = $max->subtract($one);
$x = $one->random($one, $max);
$e = $g->modPow($x, $prime);
$eBytes = $e->toBytes(true);
}
$data = pack('CNa*', constant($clientKexInitMessage), strlen($eBytes), $eBytes);
if (!$this->_send_binary_packet($data)) {
$this->bitmap = 0;
user_error('Connection closed by server');
return false;
}
switch ($clientKexInitMessage) {
case 'NET_SSH2_MSG_KEX_ECDH_INIT':
$this->_updateLogHistory('NET_SSH2_MSG_KEXDH_INIT', 'NET_SSH2_MSG_KEX_ECDH_INIT');
break;
case 'NET_SSH2_MSG_KEXDH_GEX_INIT':
$this->_updateLogHistory('UNKNOWN (32)', 'NET_SSH2_MSG_KEXDH_GEX_INIT');
}
$response = $this->_get_binary_packet();
if ($response === false) {
$this->bitmap = 0;
user_error('Connection closed by server');
return false;
}
if (!strlen($response)) {
return false;
}
extract(unpack('Ctype', $this->_string_shift($response, 1)));
if ($type != constant($serverKexReplyMessage)) {
user_error("Expected $serverKexReplyMessage");
return false;
}
switch ($serverKexReplyMessage) {
case 'NET_SSH2_MSG_KEX_ECDH_REPLY':
$this->_updateLogHistory('NET_SSH2_MSG_KEXDH_REPLY', 'NET_SSH2_MSG_KEX_ECDH_REPLY');
break;
case 'NET_SSH2_MSG_KEXDH_GEX_REPLY':
$this->_updateLogHistory('UNKNOWN (33)', 'NET_SSH2_MSG_KEXDH_GEX_REPLY');
}
if (strlen($response) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($response, 4));
$this->server_public_host_key = $server_public_host_key = $this->_string_shift($response, $temp['length']);
if (strlen($server_public_host_key) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($server_public_host_key, 4));
$public_key_format = $this->_string_shift($server_public_host_key, $temp['length']);
if (strlen($response) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($response, 4));
$fBytes = $this->_string_shift($response, $temp['length']);
if (strlen($response) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($response, 4));
$this->signature = $this->_string_shift($response, $temp['length']);
if (strlen($this->signature) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($this->signature, 4));
$this->signature_format = $this->_string_shift($this->signature, $temp['length']);
if ($kex_algorithm === 'curve25519-sha256@libssh.org') {
if (strlen($fBytes) !== 32) {
user_error('Received curve25519 public key of invalid length.');
return false;
}
$key = new BigInteger(sodium_crypto_scalarmult($x, $fBytes), 256);
// sodium_compat doesn't emulate sodium_memzero
// also, with v1 of libsodium API the extension identifies itself as
// libsodium whereas v2 of the libsodium API (what PHP 7.2+ includes)
// identifies itself as sodium. sodium_compat uses the v1 API to
// emulate the v2 API if it's the v1 API that's available
if (extension_loaded('sodium') || extension_loaded('libsodium')) {
sodium_memzero($x);
}
} else {
$f = new BigInteger($fBytes, -256);
$key = $f->modPow($x, $prime);
}
$keyBytes = $key->toBytes(true);
$this->exchange_hash = pack(
'Na*Na*Na*Na*Na*a*Na*Na*Na*',
strlen($this->identifier),
$this->identifier,
strlen($this->server_identifier),
$this->server_identifier,
strlen($kexinit_payload_client),
$kexinit_payload_client,
strlen($kexinit_payload_server),
$kexinit_payload_server,
strlen($this->server_public_host_key),
$this->server_public_host_key,
$exchange_hash_rfc4419,
strlen($eBytes),
$eBytes,
strlen($fBytes),
$fBytes,
strlen($keyBytes),
$keyBytes
);
$this->exchange_hash = $kexHash->hash($this->exchange_hash);
if ($this->session_id === false) {
$this->session_id = $this->exchange_hash;
}
switch ($server_host_key_algorithm) {
case 'ssh-dss':
$expected_key_format = 'ssh-dss';
break;
//case 'rsa-sha2-256':
//case 'rsa-sha2-512':
//case 'ssh-rsa':
default:
$expected_key_format = 'ssh-rsa';
}
if ($public_key_format != $expected_key_format || $this->signature_format != $server_host_key_algorithm) {
switch (true) {
case $this->signature_format == $server_host_key_algorithm:
case $server_host_key_algorithm != 'rsa-sha2-256' && $server_host_key_algorithm != 'rsa-sha2-512':
case $this->signature_format != 'ssh-rsa':
user_error('Server Host Key Algorithm Mismatch');
return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
}
}
$packet = pack(
'C',
NET_SSH2_MSG_NEWKEYS
);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$response = $this->_get_binary_packet();
if ($response === false) {
$this->bitmap = 0;
user_error('Connection closed by server');
return false;
}
if (!strlen($response)) {
return false;
}
extract(unpack('Ctype', $this->_string_shift($response, 1)));
if ($type != NET_SSH2_MSG_NEWKEYS) {
user_error('Expected SSH_MSG_NEWKEYS');
return false;
}
$keyBytes = pack('Na*', strlen($keyBytes), $keyBytes);
$this->encrypt = $this->_encryption_algorithm_to_crypt_instance($encrypt);
if ($this->encrypt) {
if ($this->crypto_engine) {
$this->encrypt->setPreferredEngine($this->crypto_engine);
}
if ($this->encrypt->block_size) {
$this->encrypt_block_size = $this->encrypt->block_size;
}
$this->encrypt->enableContinuousBuffer();
$this->encrypt->disablePadding();
if ($this->encrypt->getBlockLength()) {
$this->encrypt_block_size = $this->encrypt->getBlockLength() >> 3;
}
$iv = $kexHash->hash($keyBytes . $this->exchange_hash . 'A' . $this->session_id);
while ($this->encrypt_block_size > strlen($iv)) {
$iv.= $kexHash->hash($keyBytes . $this->exchange_hash . $iv);
}
$this->encrypt->setIV(substr($iv, 0, $this->encrypt_block_size));
$key = $kexHash->hash($keyBytes . $this->exchange_hash . 'C' . $this->session_id);
while ($encryptKeyLength > strlen($key)) {
$key.= $kexHash->hash($keyBytes . $this->exchange_hash . $key);
}
$this->encrypt->setKey(substr($key, 0, $encryptKeyLength));
$this->encrypt->name = $decrypt;
}
$this->decrypt = $this->_encryption_algorithm_to_crypt_instance($decrypt);
if ($this->decrypt) {
if ($this->crypto_engine) {
$this->decrypt->setPreferredEngine($this->crypto_engine);
}
if ($this->decrypt->block_size) {
$this->decrypt_block_size = $this->decrypt->block_size;
}
$this->decrypt->enableContinuousBuffer();
$this->decrypt->disablePadding();
if ($this->decrypt->getBlockLength()) {
$this->decrypt_block_size = $this->decrypt->getBlockLength() >> 3;
}
$iv = $kexHash->hash($keyBytes . $this->exchange_hash . 'B' . $this->session_id);
while ($this->decrypt_block_size > strlen($iv)) {
$iv.= $kexHash->hash($keyBytes . $this->exchange_hash . $iv);
}
$this->decrypt->setIV(substr($iv, 0, $this->decrypt_block_size));
$key = $kexHash->hash($keyBytes . $this->exchange_hash . 'D' . $this->session_id);
while ($decryptKeyLength > strlen($key)) {
$key.= $kexHash->hash($keyBytes . $this->exchange_hash . $key);
}
$this->decrypt->setKey(substr($key, 0, $decryptKeyLength));
$this->decrypt->name = $decrypt;
}
/* The "arcfour128" algorithm is the RC4 cipher, as described in
[SCHNEIER], using a 128-bit key. The first 1536 bytes of keystream
generated by the cipher MUST be discarded, and the first byte of the
first encrypted packet MUST be encrypted using the 1537th byte of
keystream.
-- http://tools.ietf.org/html/rfc4345#section-4 */
if ($encrypt == 'arcfour128' || $encrypt == 'arcfour256') {
$this->encrypt->encrypt(str_repeat("\0", 1536));
}
if ($decrypt == 'arcfour128' || $decrypt == 'arcfour256') {
$this->decrypt->decrypt(str_repeat("\0", 1536));
}
$mac_algorithm_out = $this->_array_intersect_first($c2s_mac_algorithms, $this->mac_algorithms_client_to_server);
if ($mac_algorithm_out === false) {
user_error('No compatible client to server message authentication algorithms found');
return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
}
$createKeyLength = 0; // ie. $mac_algorithm == 'none'
switch ($mac_algorithm_out) {
case 'hmac-sha2-256':
$this->hmac_create = new Hash('sha256');
$createKeyLength = 32;
break;
case 'hmac-sha1':
$this->hmac_create = new Hash('sha1');
$createKeyLength = 20;
break;
case 'hmac-sha1-96':
$this->hmac_create = new Hash('sha1-96');
$createKeyLength = 20;
break;
case 'hmac-md5':
$this->hmac_create = new Hash('md5');
$createKeyLength = 16;
break;
case 'hmac-md5-96':
$this->hmac_create = new Hash('md5-96');
$createKeyLength = 16;
}
$this->hmac_create->name = $mac_algorithm_out;
$checkKeyLength = 0;
$this->hmac_size = 0;
switch ($mac_algorithm_in) {
case 'hmac-sha2-256':
$this->hmac_check = new Hash('sha256');
$checkKeyLength = 32;
$this->hmac_size = 32;
break;
case 'hmac-sha1':
$this->hmac_check = new Hash('sha1');
$checkKeyLength = 20;
$this->hmac_size = 20;
break;
case 'hmac-sha1-96':
$this->hmac_check = new Hash('sha1-96');
$checkKeyLength = 20;
$this->hmac_size = 12;
break;
case 'hmac-md5':
$this->hmac_check = new Hash('md5');
$checkKeyLength = 16;
$this->hmac_size = 16;
break;
case 'hmac-md5-96':
$this->hmac_check = new Hash('md5-96');
$checkKeyLength = 16;
$this->hmac_size = 12;
}
$this->hmac_check->name = $mac_algorithm_in;
$key = $kexHash->hash($keyBytes . $this->exchange_hash . 'E' . $this->session_id);
while ($createKeyLength > strlen($key)) {
$key.= $kexHash->hash($keyBytes . $this->exchange_hash . $key);
}
$this->hmac_create->setKey(substr($key, 0, $createKeyLength));
$key = $kexHash->hash($keyBytes . $this->exchange_hash . 'F' . $this->session_id);
while ($checkKeyLength > strlen($key)) {
$key.= $kexHash->hash($keyBytes . $this->exchange_hash . $key);
}
$this->hmac_check->setKey(substr($key, 0, $checkKeyLength));
$this->regenerate_compression_context = $this->regenerate_decompression_context = true;
return true;
}
/**
* Maps an encryption algorithm name to the number of key bytes.
*
* @param string $algorithm Name of the encryption algorithm
* @return int|null Number of bytes as an integer or null for unknown
* @access private
*/
function _encryption_algorithm_to_key_size($algorithm)
{
if ($this->bad_key_size_fix && $this->_bad_algorithm_candidate($algorithm)) {
return 16;
}
switch ($algorithm) {
case 'none':
return 0;
case 'aes128-cbc':
case 'aes128-ctr':
case 'arcfour':
case 'arcfour128':
case 'blowfish-cbc':
case 'blowfish-ctr':
case 'twofish128-cbc':
case 'twofish128-ctr':
return 16;
case '3des-cbc':
case '3des-ctr':
case 'aes192-cbc':
case 'aes192-ctr':
case 'twofish192-cbc':
case 'twofish192-ctr':
return 24;
case 'aes256-cbc':
case 'aes256-ctr':
case 'arcfour256':
case 'twofish-cbc':
case 'twofish256-cbc':
case 'twofish256-ctr':
return 32;
}
return null;
}
/**
* Maps an encryption algorithm name to an instance of a subclass of
* \phpseclib\Crypt\Base.
*
* @param string $algorithm Name of the encryption algorithm
* @return mixed Instance of \phpseclib\Crypt\Base or null for unknown
* @access private
*/
function _encryption_algorithm_to_crypt_instance($algorithm)
{
switch ($algorithm) {
case '3des-cbc':
return new TripleDES();
case '3des-ctr':
return new TripleDES(Base::MODE_CTR);
case 'aes256-cbc':
case 'aes192-cbc':
case 'aes128-cbc':
return new Rijndael();
case 'aes256-ctr':
case 'aes192-ctr':
case 'aes128-ctr':
return new Rijndael(Base::MODE_CTR);
case 'blowfish-cbc':
return new Blowfish();
case 'blowfish-ctr':
return new Blowfish(Base::MODE_CTR);
case 'twofish128-cbc':
case 'twofish192-cbc':
case 'twofish256-cbc':
case 'twofish-cbc':
return new Twofish();
case 'twofish128-ctr':
case 'twofish192-ctr':
case 'twofish256-ctr':
return new Twofish(Base::MODE_CTR);
case 'arcfour':
case 'arcfour128':
case 'arcfour256':
return new RC4();
}
return null;
}
/**
* Tests whether or not proposed algorithm has a potential for issues
*
* @link https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/ssh2-aesctr-openssh.html
* @link https://bugzilla.mindrot.org/show_bug.cgi?id=1291
* @param string $algorithm Name of the encryption algorithm
* @return bool
* @access private
*/
function _bad_algorithm_candidate($algorithm)
{
switch ($algorithm) {
case 'arcfour256':
case 'aes192-ctr':
case 'aes256-ctr':
return true;
}
return false;
}
/**
* Login
*
* The $password parameter can be a plaintext password, a \phpseclib\Crypt\RSA object or an array
*
* @param string $username
* @return bool
* @see self::_login()
* @access public
*/
function login($username)
{
$args = func_get_args();
$this->auth[] = $args;
// try logging with 'none' as an authentication method first since that's what
// PuTTY does
if (substr($this->server_identifier, 0, 15) != 'SSH-2.0-CoreFTP' && $this->auth_methods_to_continue === null) {
if ($this->_login($username)) {
return true;
}
if (count($args) == 1) {
return false;
}
}
return call_user_func_array(array(&$this, '_login'), $args);
}
/**
* Login Helper
*
* @param string $username
* @return bool
* @see self::_login_helper()
* @access private
*/
function _login($username)
{
if (!($this->bitmap & self::MASK_CONSTRUCTOR)) {
if (!$this->_connect()) {
return false;
}
}
$args = array_slice(func_get_args(), 1);
if (empty($args)) {
return $this->_login_helper($username);
}
while (count($args)) {
if (!$this->auth_methods_to_continue || !$this->smartMFA) {
$newargs = $args;
$args = array();
} else {
$newargs = array();
foreach ($this->auth_methods_to_continue as $method) {
switch ($method) {
case 'publickey':
foreach ($args as $key => $arg) {
if (is_object($arg)) {
$newargs[] = $arg;
unset($args[$key]);
break;
}
}
break;
case 'keyboard-interactive':
$hasArray = $hasString = false;
foreach ($args as $arg) {
if ($hasArray || is_array($arg)) {
$hasArray = true;
break;
}
if ($hasString || is_string($arg)) {
$hasString = true;
break;
}
}
if ($hasArray && $hasString) {
foreach ($args as $key => $arg) {
if (is_array($arg)) {
$newargs[] = $arg;
break 2;
}
}
}
case 'password':
foreach ($args as $key => $arg) {
$newargs[] = $arg;
unset($args[$key]);
break;
}
}
}
}
if (!count($newargs)) {
return false;
}
foreach ($newargs as $arg) {
if ($this->_login_helper($username, $arg)) {
return true;
}
}
}
return false;
}
/**
* Login Helper
*
* @param string $username
* @param string $password
* @return bool
* @access private
* @internal It might be worthwhile, at some point, to protect against {@link http://tools.ietf.org/html/rfc4251#section-9.3.9 traffic analysis}
* by sending dummy SSH_MSG_IGNORE messages.
*/
function _login_helper($username, $password = null)
{
if (!($this->bitmap & self::MASK_CONNECTED)) {
return false;
}
if (!($this->bitmap & self::MASK_LOGIN_REQ)) {
$packet = pack(
'CNa*',
NET_SSH2_MSG_SERVICE_REQUEST,
strlen('ssh-userauth'),
'ssh-userauth'
);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$response = $this->_get_binary_packet();
if ($response === false) {
if ($this->retry_connect) {
$this->retry_connect = false;
if (!$this->_connect()) {
return false;
}
return $this->_login_helper($username, $password);
}
$this->bitmap = 0;
user_error('Connection closed by server');
return false;
}
if (strlen($response) < 4) {
return false;
}
extract(unpack('Ctype', $this->_string_shift($response, 1)));
if ($type != NET_SSH2_MSG_SERVICE_ACCEPT) {
user_error('Expected SSH_MSG_SERVICE_ACCEPT');
return false;
}
$this->bitmap |= self::MASK_LOGIN_REQ;
}
if (strlen($this->last_interactive_response)) {
return !is_string($password) && !is_array($password) ? false : $this->_keyboard_interactive_process($password);
}
if ($password instanceof RSA) {
return $this->_privatekey_login($username, $password);
} elseif ($password instanceof Agent) {
return $this->_ssh_agent_login($username, $password);
}
if (is_array($password)) {
if ($this->_keyboard_interactive_login($username, $password)) {
$this->bitmap |= self::MASK_LOGIN;
return true;
}
return false;
}
if (!isset($password)) {
$packet = pack(
'CNa*Na*Na*',
NET_SSH2_MSG_USERAUTH_REQUEST,
strlen($username),
$username,
strlen('ssh-connection'),
'ssh-connection',
strlen('none'),
'none'
);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$response = $this->_get_binary_packet();
if ($response === false) {
$this->bitmap = 0;
user_error('Connection closed by server');
return false;
}
if (!strlen($response)) {
return false;
}
extract(unpack('Ctype', $this->_string_shift($response, 1)));
switch ($type) {
case NET_SSH2_MSG_USERAUTH_SUCCESS:
$this->bitmap |= self::MASK_LOGIN;
return true;
case NET_SSH2_MSG_USERAUTH_FAILURE:
extract(unpack('Nmethodlistlen', $this->_string_shift($response, 4)));
$this->auth_methods_to_continue = explode(',', $this->_string_shift($response, $methodlistlen));
default:
return false;
}
}
$packet = pack(
'CNa*Na*Na*CNa*',
NET_SSH2_MSG_USERAUTH_REQUEST,
strlen($username),
$username,
strlen('ssh-connection'),
'ssh-connection',
strlen('password'),
'password',
0,
strlen($password),
$password
);
// remove the username and password from the logged packet
if (!defined('NET_SSH2_LOGGING')) {
$logged = null;
} else {
$logged = pack(
'CNa*Na*Na*CNa*',
NET_SSH2_MSG_USERAUTH_REQUEST,
strlen('username'),
'username',
strlen('ssh-connection'),
'ssh-connection',
strlen('password'),
'password',
0,
strlen('password'),
'password'
);
}
if (!$this->_send_binary_packet($packet, $logged)) {
return false;
}
$response = $this->_get_binary_packet();
if ($response === false) {
$this->bitmap = 0;
user_error('Connection closed by server');
return false;
}
if (!strlen($response)) {
return false;
}
extract(unpack('Ctype', $this->_string_shift($response, 1)));
switch ($type) {
case NET_SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ: // in theory, the password can be changed
$this->_updateLogHistory('UNKNOWN (60)', 'NET_SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ');
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$this->errors[] = 'SSH_MSG_USERAUTH_PASSWD_CHANGEREQ: ' . $this->_string_shift($response, $length);
return $this->_disconnect(NET_SSH2_DISCONNECT_AUTH_CANCELLED_BY_USER);
case NET_SSH2_MSG_USERAUTH_FAILURE:
// can we use keyboard-interactive authentication? if not then either the login is bad or the server employees
// multi-factor authentication
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$auth_methods = explode(',', $this->_string_shift($response, $length));
$this->auth_methods_to_continue = $auth_methods;
if (!strlen($response)) {
return false;
}
extract(unpack('Cpartial_success', $this->_string_shift($response, 1)));
$partial_success = $partial_success != 0;
if (!$partial_success && in_array('keyboard-interactive', $auth_methods)) {
if ($this->_keyboard_interactive_login($username, $password)) {
$this->bitmap |= self::MASK_LOGIN;
return true;
}
return false;
}
return false;
case NET_SSH2_MSG_USERAUTH_SUCCESS:
$this->bitmap |= self::MASK_LOGIN;
return true;
}
return false;
}
/**
* Login via keyboard-interactive authentication
*
* See {@link http://tools.ietf.org/html/rfc4256 RFC4256} for details. This is not a full-featured keyboard-interactive authenticator.
*
* @param string $username
* @param string $password
* @return bool
* @access private
*/
function _keyboard_interactive_login($username, $password)
{
$packet = pack(
'CNa*Na*Na*Na*Na*',
NET_SSH2_MSG_USERAUTH_REQUEST,
strlen($username),
$username,
strlen('ssh-connection'),
'ssh-connection',
strlen('keyboard-interactive'),
'keyboard-interactive',
0,
'',
0,
''
);
if (!$this->_send_binary_packet($packet)) {
return false;
}
return $this->_keyboard_interactive_process($password);
}
/**
* Handle the keyboard-interactive requests / responses.
*
* @return bool
* @access private
*/
function _keyboard_interactive_process()
{
$responses = func_get_args();
if (strlen($this->last_interactive_response)) {
$response = $this->last_interactive_response;
} else {
$orig = $response = $this->_get_binary_packet();
if ($response === false) {
$this->bitmap = 0;
user_error('Connection closed by server');
return false;
}
}
if (!strlen($response)) {
return false;
}
extract(unpack('Ctype', $this->_string_shift($response, 1)));
switch ($type) {
case NET_SSH2_MSG_USERAUTH_INFO_REQUEST:
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$this->_string_shift($response, $length); // name; may be empty
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$this->_string_shift($response, $length); // instruction; may be empty
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$this->_string_shift($response, $length); // language tag; may be empty
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nnum_prompts', $this->_string_shift($response, 4)));
for ($i = 0; $i < count($responses); $i++) {
if (is_array($responses[$i])) {
foreach ($responses[$i] as $key => $value) {
$this->keyboard_requests_responses[$key] = $value;
}
unset($responses[$i]);
}
}
$responses = array_values($responses);
if (isset($this->keyboard_requests_responses)) {
for ($i = 0; $i < $num_prompts; $i++) {
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
// prompt - ie. "Password: "; must not be empty
$prompt = $this->_string_shift($response, $length);
//$echo = $this->_string_shift($response) != chr(0);
foreach ($this->keyboard_requests_responses as $key => $value) {
if (substr($prompt, 0, strlen($key)) == $key) {
$responses[] = $value;
break;
}
}
}
}
// see http://tools.ietf.org/html/rfc4256#section-3.2
if (strlen($this->last_interactive_response)) {
$this->last_interactive_response = '';
} else {
$this->_updateLogHistory('UNKNOWN (60)', 'NET_SSH2_MSG_USERAUTH_INFO_REQUEST');
}
if (!count($responses) && $num_prompts) {
$this->last_interactive_response = $orig;
return false;
}
/*
After obtaining the requested information from the user, the client
MUST respond with an SSH_MSG_USERAUTH_INFO_RESPONSE message.
*/
// see http://tools.ietf.org/html/rfc4256#section-3.4
$packet = $logged = pack('CN', NET_SSH2_MSG_USERAUTH_INFO_RESPONSE, count($responses));
for ($i = 0; $i < count($responses); $i++) {
$packet.= pack('Na*', strlen($responses[$i]), $responses[$i]);
$logged.= pack('Na*', strlen('dummy-answer'), 'dummy-answer');
}
if (!$this->_send_binary_packet($packet, $logged)) {
return false;
}
$this->_updateLogHistory('UNKNOWN (61)', 'NET_SSH2_MSG_USERAUTH_INFO_RESPONSE');
/*
After receiving the response, the server MUST send either an
SSH_MSG_USERAUTH_SUCCESS, SSH_MSG_USERAUTH_FAILURE, or another
SSH_MSG_USERAUTH_INFO_REQUEST message.
*/
// maybe phpseclib should force close the connection after x request / responses? unless something like that is done
// there could be an infinite loop of request / responses.
return $this->_keyboard_interactive_process();
case NET_SSH2_MSG_USERAUTH_SUCCESS:
return true;
case NET_SSH2_MSG_USERAUTH_FAILURE:
extract(unpack('Nmethodlistlen', $this->_string_shift($response, 4)));
$this->auth_methods_to_continue = explode(',', $this->_string_shift($response, $methodlistlen));
return false;
}
return false;
}
/**
* Login with an ssh-agent provided key
*
* @param string $username
* @param \phpseclib\System\SSH\Agent $agent
* @return bool
* @access private
*/
function _ssh_agent_login($username, $agent)
{
$this->agent = $agent;
$keys = $agent->requestIdentities();
foreach ($keys as $key) {
if ($this->_privatekey_login($username, $key)) {
return true;
}
}
return false;
}
/**
* Login with an RSA private key
*
* @param string $username
* @param \phpseclib\Crypt\RSA $privatekey
* @return bool
* @access private
* @internal It might be worthwhile, at some point, to protect against {@link http://tools.ietf.org/html/rfc4251#section-9.3.9 traffic analysis}
* by sending dummy SSH_MSG_IGNORE messages.
*/
function _privatekey_login($username, $privatekey)
{
// see http://tools.ietf.org/html/rfc4253#page-15
$publickey = $privatekey->getPublicKey(RSA::PUBLIC_FORMAT_RAW);
if ($publickey === false) {
return false;
}
$publickey = array(
'e' => $publickey['e']->toBytes(true),
'n' => $publickey['n']->toBytes(true)
);
$publickey = pack(
'Na*Na*Na*',
strlen('ssh-rsa'),
'ssh-rsa',
strlen($publickey['e']),
$publickey['e'],
strlen($publickey['n']),
$publickey['n']
);
switch ($this->signature_format) {
case 'rsa-sha2-512':
$hash = 'sha512';
$signatureType = 'rsa-sha2-512';
break;
case 'rsa-sha2-256':
$hash = 'sha256';
$signatureType = 'rsa-sha2-256';
break;
//case 'ssh-rsa':
default:
$hash = 'sha1';
$signatureType = 'ssh-rsa';
}
$part1 = pack(
'CNa*Na*Na*',
NET_SSH2_MSG_USERAUTH_REQUEST,
strlen($username),
$username,
strlen('ssh-connection'),
'ssh-connection',
strlen('publickey'),
'publickey'
);
$part2 = pack('Na*Na*', strlen($signatureType), $signatureType, strlen($publickey), $publickey);
$packet = $part1 . chr(0) . $part2;
if (!$this->_send_binary_packet($packet)) {
return false;
}
$response = $this->_get_binary_packet();
if ($response === false) {
$this->bitmap = 0;
user_error('Connection closed by server');
return false;
}
if (!strlen($response)) {
return false;
}
extract(unpack('Ctype', $this->_string_shift($response, 1)));
switch ($type) {
case NET_SSH2_MSG_USERAUTH_FAILURE:
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nmethodlistlen', $this->_string_shift($response, 4)));
$this->auth_methods_to_continue = explode(',', $this->_string_shift($response, $methodlistlen));
$this->errors[] = 'SSH_MSG_USERAUTH_FAILURE';
return false;
case NET_SSH2_MSG_USERAUTH_PK_OK:
// we'll just take it on faith that the public key blob and the public key algorithm name are as
// they should be
$this->_updateLogHistory('UNKNOWN (60)', 'NET_SSH2_MSG_USERAUTH_PK_OK');
break;
case NET_SSH2_MSG_USERAUTH_SUCCESS:
$this->bitmap |= self::MASK_LOGIN;
return true;
default:
user_error('Unexpected response to publickey authentication pt 1');
return $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION);
}
$packet = $part1 . chr(1) . $part2;
$privatekey->setSignatureMode(RSA::SIGNATURE_PKCS1);
$privatekey->setHash($hash);
$signature = $privatekey->sign(pack('Na*a*', strlen($this->session_id), $this->session_id, $packet));
$signature = pack('Na*Na*', strlen($signatureType), $signatureType, strlen($signature), $signature);
$packet.= pack('Na*', strlen($signature), $signature);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$response = $this->_get_binary_packet();
if ($response === false) {
$this->bitmap = 0;
user_error('Connection closed by server');
return false;
}
if (!strlen($response)) {
return false;
}
extract(unpack('Ctype', $this->_string_shift($response, 1)));
switch ($type) {
case NET_SSH2_MSG_USERAUTH_FAILURE:
// either the login is bad or the server employs multi-factor authentication
extract(unpack('Nmethodlistlen', $this->_string_shift($response, 4)));
$this->auth_methods_to_continue = explode(',', $this->_string_shift($response, $methodlistlen));
return false;
case NET_SSH2_MSG_USERAUTH_SUCCESS:
$this->bitmap |= self::MASK_LOGIN;
return true;
}
user_error('Unexpected response to publickey authentication pt 2');
return $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION);
}
/**
* Set Timeout
*
* $ssh->exec('ping 127.0.0.1'); on a Linux host will never return and will run indefinitely. setTimeout() makes it so it'll timeout.
* Setting $timeout to false or 0 will mean there is no timeout.
*
* @param mixed $timeout
* @access public
*/
function setTimeout($timeout)
{
$this->timeout = $this->curTimeout = $timeout;
}
/**
* Set Keep Alive
*
* Sends an SSH2_MSG_IGNORE message every x seconds, if x is a positive non-zero number.
*
* @param int $interval
* @access public
*/
function setKeepAlive($interval)
{
$this->keepAlive = $interval;
}
/**
* Get the output from stdError
*
* @access public
*/
function getStdError()
{
return $this->stdErrorLog;
}
/**
* Execute Command
*
* If $callback is set to false then \phpseclib\Net\SSH2::_get_channel_packet(self::CHANNEL_EXEC) will need to be called manually.
* In all likelihood, this is not a feature you want to be taking advantage of.
*
* @param string $command
* @param Callback $callback
* @return string
* @access public
*/
function exec($command, $callback = null)
{
$this->curTimeout = $this->timeout;
$this->is_timeout = false;
$this->stdErrorLog = '';
if (!$this->isAuthenticated()) {
return false;
}
if ($this->in_request_pty_exec) {
user_error('If you want to run multiple exec()\'s you will need to disable (and re-enable if appropriate) a PTY for each one.');
return false;
}
// RFC4254 defines the (client) window size as "bytes the other party can send before it must wait for the window to
// be adjusted". 0x7FFFFFFF is, at 2GB, the max size. technically, it should probably be decremented, but,
// honestly, if you're transferring more than 2GB, you probably shouldn't be using phpseclib, anyway.
// see http://tools.ietf.org/html/rfc4254#section-5.2 for more info
$this->window_size_server_to_client[self::CHANNEL_EXEC] = $this->window_size;
// 0x8000 is the maximum max packet size, per http://tools.ietf.org/html/rfc4253#section-6.1, although since PuTTy
// uses 0x4000, that's what will be used here, as well.
$packet_size = 0x4000;
$packet = pack(
'CNa*N3',
NET_SSH2_MSG_CHANNEL_OPEN,
strlen('session'),
'session',
self::CHANNEL_EXEC,
$this->window_size_server_to_client[self::CHANNEL_EXEC],
$packet_size
);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$this->channel_status[self::CHANNEL_EXEC] = NET_SSH2_MSG_CHANNEL_OPEN;
$response = $this->_get_channel_packet(self::CHANNEL_EXEC);
if ($response === false) {
return false;
}
if ($this->request_pty === true) {
$terminal_modes = pack('C', NET_SSH2_TTY_OP_END);
$packet = pack(
'CNNa*CNa*N5a*',
NET_SSH2_MSG_CHANNEL_REQUEST,
$this->server_channels[self::CHANNEL_EXEC],
strlen('pty-req'),
'pty-req',
1,
strlen('vt100'),
'vt100',
$this->windowColumns,
$this->windowRows,
0,
0,
strlen($terminal_modes),
$terminal_modes
);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$this->channel_status[self::CHANNEL_EXEC] = NET_SSH2_MSG_CHANNEL_REQUEST;
if (!$this->_get_channel_packet(self::CHANNEL_EXEC)) {
user_error('Unable to request pseudo-terminal');
return $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION);
}
$this->in_request_pty_exec = true;
}
// sending a pty-req SSH_MSG_CHANNEL_REQUEST message is unnecessary and, in fact, in most cases, slows things
// down. the one place where it might be desirable is if you're doing something like \phpseclib\Net\SSH2::exec('ping localhost &').
// with a pty-req SSH_MSG_CHANNEL_REQUEST, exec() will return immediately and the ping process will then
// then immediately terminate. without such a request exec() will loop indefinitely. the ping process won't end but
// neither will your script.
// although, in theory, the size of SSH_MSG_CHANNEL_REQUEST could exceed the maximum packet size established by
// SSH_MSG_CHANNEL_OPEN_CONFIRMATION, RFC4254#section-5.1 states that the "maximum packet size" refers to the
// "maximum size of an individual data packet". ie. SSH_MSG_CHANNEL_DATA. RFC4254#section-5.2 corroborates.
$packet = pack(
'CNNa*CNa*',
NET_SSH2_MSG_CHANNEL_REQUEST,
$this->server_channels[self::CHANNEL_EXEC],
strlen('exec'),
'exec',
1,
strlen($command),
$command
);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$this->channel_status[self::CHANNEL_EXEC] = NET_SSH2_MSG_CHANNEL_REQUEST;
$response = $this->_get_channel_packet(self::CHANNEL_EXEC);
if ($response === false) {
return false;
}
$this->channel_status[self::CHANNEL_EXEC] = NET_SSH2_MSG_CHANNEL_DATA;
if ($callback === false || $this->in_request_pty_exec) {
return true;
}
$output = '';
while (true) {
$temp = $this->_get_channel_packet(self::CHANNEL_EXEC);
switch (true) {
case $temp === true:
return is_callable($callback) ? true : $output;
case $temp === false:
return false;
default:
if (is_callable($callback)) {
if (call_user_func($callback, $temp) === true) {
$this->_close_channel(self::CHANNEL_EXEC);
return true;
}
} else {
$output.= $temp;
}
}
}
}
/**
* Creates an interactive shell
*
* @see self::read()
* @see self::write()
* @return bool
* @access private
*/
function _initShell()
{
if ($this->in_request_pty_exec === true) {
return true;
}
$this->window_size_server_to_client[self::CHANNEL_SHELL] = $this->window_size;
$packet_size = 0x4000;
$packet = pack(
'CNa*N3',
NET_SSH2_MSG_CHANNEL_OPEN,
strlen('session'),
'session',
self::CHANNEL_SHELL,
$this->window_size_server_to_client[self::CHANNEL_SHELL],
$packet_size
);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$this->channel_status[self::CHANNEL_SHELL] = NET_SSH2_MSG_CHANNEL_OPEN;
$response = $this->_get_channel_packet(self::CHANNEL_SHELL);
if ($response === false) {
return false;
}
$terminal_modes = pack('C', NET_SSH2_TTY_OP_END);
$packet = pack(
'CNNa*CNa*N5a*',
NET_SSH2_MSG_CHANNEL_REQUEST,
$this->server_channels[self::CHANNEL_SHELL],
strlen('pty-req'),
'pty-req',
1,
strlen('vt100'),
'vt100',
$this->windowColumns,
$this->windowRows,
0,
0,
strlen($terminal_modes),
$terminal_modes
);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$this->channel_status[self::CHANNEL_SHELL] = NET_SSH2_MSG_CHANNEL_REQUEST;
if (!$this->_get_channel_packet(self::CHANNEL_SHELL)) {
user_error('Unable to request pseudo-terminal');
return $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION);
}
$packet = pack(
'CNNa*C',
NET_SSH2_MSG_CHANNEL_REQUEST,
$this->server_channels[self::CHANNEL_SHELL],
strlen('shell'),
'shell',
1
);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$response = $this->_get_channel_packet(self::CHANNEL_SHELL);
if ($response === false) {
return false;
}
$this->channel_status[self::CHANNEL_SHELL] = NET_SSH2_MSG_CHANNEL_DATA;
$this->bitmap |= self::MASK_SHELL;
return true;
}
/**
* Return the channel to be used with read() / write()
*
* @see self::read()
* @see self::write()
* @return int
* @access public
*/
function _get_interactive_channel()
{
switch (true) {
case $this->in_subsystem:
return self::CHANNEL_SUBSYSTEM;
case $this->in_request_pty_exec:
return self::CHANNEL_EXEC;
default:
return self::CHANNEL_SHELL;
}
}
/**
* Return an available open channel
*
* @return int
* @access public
*/
function _get_open_channel()
{
$channel = self::CHANNEL_EXEC;
do {
if (isset($this->channel_status[$channel]) && $this->channel_status[$channel] == NET_SSH2_MSG_CHANNEL_OPEN) {
return $channel;
}
} while ($channel++ < self::CHANNEL_SUBSYSTEM);
return false;
}
/**
* Returns the output of an interactive shell
*
* Returns when there's a match for $expect, which can take the form of a string literal or,
* if $mode == self::READ_REGEX, a regular expression.
*
* @see self::write()
* @param string $expect
* @param int $mode
* @return string|bool
* @access public
*/
function read($expect = '', $mode = self::READ_SIMPLE)
{
$this->curTimeout = $this->timeout;
$this->is_timeout = false;
if (!$this->isAuthenticated()) {
user_error('Operation disallowed prior to login()');
return false;
}
if (!($this->bitmap & self::MASK_SHELL) && !$this->_initShell()) {
user_error('Unable to initiate an interactive shell session');
return false;
}
$channel = $this->_get_interactive_channel();
if ($mode == self::READ_NEXT) {
return $this->_get_channel_packet($channel);
}
$match = $expect;
while (true) {
if ($mode == self::READ_REGEX) {
preg_match($expect, substr($this->interactiveBuffer, -1024), $matches);
$match = isset($matches[0]) ? $matches[0] : '';
}
$pos = strlen($match) ? strpos($this->interactiveBuffer, $match) : false;
if ($pos !== false) {
return $this->_string_shift($this->interactiveBuffer, $pos + strlen($match));
}
$response = $this->_get_channel_packet($channel);
if (is_bool($response)) {
$this->in_request_pty_exec = false;
return $response ? $this->_string_shift($this->interactiveBuffer, strlen($this->interactiveBuffer)) : false;
}
$this->interactiveBuffer.= $response;
}
}
/**
* Inputs a command into an interactive shell.
*
* @see self::read()
* @param string $cmd
* @return bool
* @access public
*/
function write($cmd)
{
if (!$this->isAuthenticated()) {
user_error('Operation disallowed prior to login()');
return false;
}
if (!($this->bitmap & self::MASK_SHELL) && !$this->_initShell()) {
user_error('Unable to initiate an interactive shell session');
return false;
}
return $this->_send_channel_packet($this->_get_interactive_channel(), $cmd);
}
/**
* Start a subsystem.
*
* Right now only one subsystem at a time is supported. To support multiple subsystem's stopSubsystem() could accept
* a string that contained the name of the subsystem, but at that point, only one subsystem of each type could be opened.
* To support multiple subsystem's of the same name maybe it'd be best if startSubsystem() generated a new channel id and
* returns that and then that that was passed into stopSubsystem() but that'll be saved for a future date and implemented
* if there's sufficient demand for such a feature.
*
* @see self::stopSubsystem()
* @param string $subsystem
* @return bool
* @access public
*/
function startSubsystem($subsystem)
{
$this->window_size_server_to_client[self::CHANNEL_SUBSYSTEM] = $this->window_size;
$packet = pack(
'CNa*N3',
NET_SSH2_MSG_CHANNEL_OPEN,
strlen('session'),
'session',
self::CHANNEL_SUBSYSTEM,
$this->window_size,
0x4000
);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$this->channel_status[self::CHANNEL_SUBSYSTEM] = NET_SSH2_MSG_CHANNEL_OPEN;
$response = $this->_get_channel_packet(self::CHANNEL_SUBSYSTEM);
if ($response === false) {
return false;
}
$packet = pack(
'CNNa*CNa*',
NET_SSH2_MSG_CHANNEL_REQUEST,
$this->server_channels[self::CHANNEL_SUBSYSTEM],
strlen('subsystem'),
'subsystem',
1,
strlen($subsystem),
$subsystem
);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$this->channel_status[self::CHANNEL_SUBSYSTEM] = NET_SSH2_MSG_CHANNEL_REQUEST;
$response = $this->_get_channel_packet(self::CHANNEL_SUBSYSTEM);
if ($response === false) {
return false;
}
$this->channel_status[self::CHANNEL_SUBSYSTEM] = NET_SSH2_MSG_CHANNEL_DATA;
$this->bitmap |= self::MASK_SHELL;
$this->in_subsystem = true;
return true;
}
/**
* Stops a subsystem.
*
* @see self::startSubsystem()
* @return bool
* @access public
*/
function stopSubsystem()
{
$this->in_subsystem = false;
$this->_close_channel(self::CHANNEL_SUBSYSTEM);
return true;
}
/**
* Closes a channel
*
* If read() timed out you might want to just close the channel and have it auto-restart on the next read() call
*
* @access public
*/
function reset()
{
$this->_close_channel($this->_get_interactive_channel());
}
/**
* Is timeout?
*
* Did exec() or read() return because they timed out or because they encountered the end?
*
* @access public
*/
function isTimeout()
{
return $this->is_timeout;
}
/**
* Disconnect
*
* @access public
*/
function disconnect()
{
$this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION);
if (isset($this->realtime_log_file) && is_resource($this->realtime_log_file)) {
fclose($this->realtime_log_file);
}
}
/**
* Destructor.
*
* Will be called, automatically, if you're supporting just PHP5. If you're supporting PHP4, you'll need to call
* disconnect().
*
* @access public
*/
function __destruct()
{
$this->disconnect();
}
/**
* Is the connection still active?
*
* @return bool
* @access public
*/
function isConnected()
{
return (bool) ($this->bitmap & self::MASK_CONNECTED);
}
/**
* Have you successfully been logged in?
*
* @return bool
* @access public
*/
function isAuthenticated()
{
return (bool) ($this->bitmap & self::MASK_LOGIN);
}
/**
* Pings a server connection, or tries to reconnect if the connection has gone down
*
* Inspired by http://php.net/manual/en/mysqli.ping.php
*
* @return bool
* @access public
*/
function ping()
{
if (!$this->isAuthenticated()) {
if (!empty($this->auth)) {
return $this->_reconnect();
}
return false;
}
$this->window_size_server_to_client[self::CHANNEL_KEEP_ALIVE] = $this->window_size;
$packet_size = 0x4000;
$packet = pack(
'CNa*N3',
NET_SSH2_MSG_CHANNEL_OPEN,
strlen('session'),
'session',
self::CHANNEL_KEEP_ALIVE,
$this->window_size_server_to_client[self::CHANNEL_KEEP_ALIVE],
$packet_size
);
if (!@$this->_send_binary_packet($packet)) {
return $this->_reconnect();
}
$this->channel_status[self::CHANNEL_KEEP_ALIVE] = NET_SSH2_MSG_CHANNEL_OPEN;
$response = @$this->_get_channel_packet(self::CHANNEL_KEEP_ALIVE);
if ($response !== false) {
$this->_close_channel(self::CHANNEL_KEEP_ALIVE);
return true;
}
return $this->_reconnect();
}
/**
* In situ reconnect method
*
* @return boolean
* @access private
*/
function _reconnect()
{
$this->_reset_connection(NET_SSH2_DISCONNECT_CONNECTION_LOST);
$this->retry_connect = true;
if (!$this->_connect()) {
return false;
}
foreach ($this->auth as $auth) {
$result = call_user_func_array(array(&$this, 'login'), $auth);
}
return $result;
}
/**
* Resets a connection for re-use
*
* @param int $reason
* @access private
*/
function _reset_connection($reason)
{
$this->_disconnect($reason);
$this->decrypt = $this->encrypt = false;
$this->decrypt_block_size = $this->encrypt_block_size = 8;
$this->hmac_check = $this->hmac_create = false;
$this->hmac_size = false;
$this->session_id = false;
$this->retry_connect = true;
$this->get_seq_no = $this->send_seq_no = 0;
}
/**
* Gets Binary Packets
*
* See '6. Binary Packet Protocol' of rfc4253 for more info.
*
* @see self::_send_binary_packet()
* @return string
* @access private
*/
function _get_binary_packet($skip_channel_filter = false)
{
if ($skip_channel_filter) {
$read = array($this->fsock);
$write = $except = null;
if (!$this->curTimeout) {
if ($this->keepAlive <= 0) {
@stream_select($read, $write, $except, null);
} else {
if (!@stream_select($read, $write, $except, $this->keepAlive) && !count($read)) {
$this->_send_binary_packet(pack('CN', NET_SSH2_MSG_IGNORE, 0));
return $this->_get_binary_packet(true);
}
}
} else {
if ($this->curTimeout < 0) {
$this->is_timeout = true;
return true;
}
$read = array($this->fsock);
$write = $except = null;
$start = microtime(true);
if ($this->keepAlive > 0 && $this->keepAlive < $this->curTimeout) {
if (!@stream_select($read, $write, $except, $this->keepAlive) && !count($read)) {
$this->_send_binary_packet(pack('CN', NET_SSH2_MSG_IGNORE, 0));
$elapsed = microtime(true) - $start;
$this->curTimeout-= $elapsed;
return $this->_get_binary_packet(true);
}
$elapsed = microtime(true) - $start;
$this->curTimeout-= $elapsed;
}
$sec = (int)floor($this->curTimeout);
$usec = (int)(1000000 * ($this->curTimeout - $sec));
// on windows this returns a "Warning: Invalid CRT parameters detected" error
if (!@stream_select($read, $write, $except, $sec, $usec) && !count($read)) {
$this->is_timeout = true;
return true;
}
$elapsed = microtime(true) - $start;
$this->curTimeout-= $elapsed;
}
}
if (!is_resource($this->fsock) || feof($this->fsock)) {
$this->bitmap = 0;
$str = 'Connection closed (by server) prematurely';
if (isset($elapsed)) {
$str.= ' ' . $elapsed . 's';
}
user_error($str);
return false;
}
$start = microtime(true);
$raw = stream_get_contents($this->fsock, $this->decrypt_block_size);
if (!strlen($raw)) {
user_error('No data received from server');
return false;
}
if ($this->decrypt !== false) {
$raw = $this->decrypt->decrypt($raw);
}
if ($raw === false) {
user_error('Unable to decrypt content');
return false;
}
if (strlen($raw) < 5) {
return false;
}
extract(unpack('Npacket_length/Cpadding_length', $this->_string_shift($raw, 5)));
$remaining_length = $packet_length + 4 - $this->decrypt_block_size;
// quoting <http://tools.ietf.org/html/rfc4253#section-6.1>,
// "implementations SHOULD check that the packet length is reasonable"
// PuTTY uses 0x9000 as the actual max packet size and so to shall we
if ($remaining_length < -$this->decrypt_block_size || $remaining_length > 0x9000 || $remaining_length % $this->decrypt_block_size != 0) {
if (!$this->bad_key_size_fix && $this->_bad_algorithm_candidate($this->decrypt->name) && !($this->bitmap & SSH2::MASK_LOGIN)) {
$this->bad_key_size_fix = true;
$this->_reset_connection(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
return false;
}
user_error('Invalid size');
return false;
}
$buffer = '';
while ($remaining_length > 0) {
$temp = stream_get_contents($this->fsock, $remaining_length);
if ($temp === false || feof($this->fsock)) {
$this->bitmap = 0;
user_error('Error reading from socket');
return false;
}
$buffer.= $temp;
$remaining_length-= strlen($temp);
}
$stop = microtime(true);
if (strlen($buffer)) {
$raw.= $this->decrypt !== false ? $this->decrypt->decrypt($buffer) : $buffer;
}
$payload = $this->_string_shift($raw, $packet_length - $padding_length - 1);
$padding = $this->_string_shift($raw, $padding_length); // should leave $raw empty
if ($this->hmac_check !== false) {
$hmac = stream_get_contents($this->fsock, $this->hmac_size);
if ($hmac === false || strlen($hmac) != $this->hmac_size) {
$this->bitmap = 0;
user_error('Error reading socket');
return false;
} elseif ($hmac != $this->hmac_check->hash(pack('NNCa*', $this->get_seq_no, $packet_length, $padding_length, $payload . $padding))) {
user_error('Invalid HMAC');
return false;
}
}
switch ($this->decompress) {
case self::NET_SSH2_COMPRESSION_ZLIB_AT_OPENSSH:
if (!$this->isAuthenticated()) {
break;
}
case self::NET_SSH2_COMPRESSION_ZLIB:
if ($this->regenerate_decompression_context) {
$this->regenerate_decompression_context = false;
$cmf = ord($payload[0]);
$cm = $cmf & 0x0F;
if ($cm != 8) { // deflate
user_error("Only CM = 8 ('deflate') is supported ($cm)");
}
$cinfo = ($cmf & 0xF0) >> 4;
if ($cinfo > 7) {
user_error("CINFO above 7 is not allowed ($cinfo)");
}
$windowSize = 1 << ($cinfo + 8);
$flg = ord($payload[1]);
//$fcheck = $flg && 0x0F;
if ((($cmf << 8) | $flg) % 31) {
user_error('fcheck failed');
}
$fdict = boolval($flg & 0x20);
$flevel = ($flg & 0xC0) >> 6;
$this->decompress_context = inflate_init(ZLIB_ENCODING_RAW, array('window' => $cinfo + 8));
$payload = substr($payload, 2);
}
if ($this->decompress_context) {
$payload = inflate_add($this->decompress_context, $payload, ZLIB_PARTIAL_FLUSH);
}
}
$this->get_seq_no++;
if (defined('NET_SSH2_LOGGING')) {
$current = microtime(true);
$message_number = isset($this->message_numbers[ord($payload[0])]) ? $this->message_numbers[ord($payload[0])] : 'UNKNOWN (' . ord($payload[0]) . ')';
$message_number = '<- ' . $message_number .
' (since last: ' . round($current - $this->last_packet, 4) . ', network: ' . round($stop - $start, 4) . 's)';
$this->_append_log($message_number, $payload);
$this->last_packet = $current;
}
return $this->_filter($payload, $skip_channel_filter);
}
/**
* Filter Binary Packets
*
* Because some binary packets need to be ignored...
*
* @see self::_get_binary_packet()
* @return string
* @access private
*/
function _filter($payload, $skip_channel_filter)
{
switch (ord($payload[0])) {
case NET_SSH2_MSG_DISCONNECT:
$this->_string_shift($payload, 1);
if (strlen($payload) < 8) {
return false;
}
extract(unpack('Nreason_code/Nlength', $this->_string_shift($payload, 8)));
$this->errors[] = 'SSH_MSG_DISCONNECT: ' . $this->disconnect_reasons[$reason_code] . "\r\n" . $this->_string_shift($payload, $length);
$this->bitmap = 0;
return false;
case NET_SSH2_MSG_IGNORE:
$payload = $this->_get_binary_packet($skip_channel_filter);
break;
case NET_SSH2_MSG_DEBUG:
$this->_string_shift($payload, 2);
if (strlen($payload) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($payload, 4)));
$this->errors[] = 'SSH_MSG_DEBUG: ' . $this->_string_shift($payload, $length);
$payload = $this->_get_binary_packet($skip_channel_filter);
break;
case NET_SSH2_MSG_UNIMPLEMENTED:
return false;
case NET_SSH2_MSG_KEXINIT:
if ($this->session_id !== false) {
$this->send_kex_first = false;
if (!$this->_key_exchange($payload)) {
$this->bitmap = 0;
return false;
}
$payload = $this->_get_binary_packet($skip_channel_filter);
}
}
// see http://tools.ietf.org/html/rfc4252#section-5.4; only called when the encryption has been activated and when we haven't already logged in
if (($this->bitmap & self::MASK_CONNECTED) && !$this->isAuthenticated() && ord($payload[0]) == NET_SSH2_MSG_USERAUTH_BANNER) {
$this->_string_shift($payload, 1);
if (strlen($payload) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($payload, 4)));
$this->banner_message = $this->_string_shift($payload, $length);
$payload = $this->_get_binary_packet();
}
// only called when we've already logged in
if (($this->bitmap & self::MASK_CONNECTED) && $this->isAuthenticated()) {
if (is_bool($payload)) {
return $payload;
}
switch (ord($payload[0])) {
case NET_SSH2_MSG_CHANNEL_REQUEST:
if (strlen($payload) == 31) {
extract(unpack('cpacket_type/Nchannel/Nlength', $payload));
if (substr($payload, 9, $length) == 'keepalive@openssh.com' && isset($this->server_channels[$channel])) {
if (ord(substr($payload, 9 + $length))) { // want reply
$this->_send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_SUCCESS, $this->server_channels[$channel]));
}
$payload = $this->_get_binary_packet($skip_channel_filter);
}
}
break;
case NET_SSH2_MSG_CHANNEL_DATA:
case NET_SSH2_MSG_CHANNEL_EXTENDED_DATA:
case NET_SSH2_MSG_CHANNEL_CLOSE:
case NET_SSH2_MSG_CHANNEL_EOF:
if (!$skip_channel_filter && !empty($this->server_channels)) {
$this->binary_packet_buffer = $payload;
$this->_get_channel_packet(true);
$payload = $this->_get_binary_packet();
}
break;
case NET_SSH2_MSG_GLOBAL_REQUEST: // see http://tools.ietf.org/html/rfc4254#section-4
if (strlen($payload) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($payload, 4)));
$this->errors[] = 'SSH_MSG_GLOBAL_REQUEST: ' . $this->_string_shift($payload, $length);
if (!$this->_send_binary_packet(pack('C', NET_SSH2_MSG_REQUEST_FAILURE))) {
return $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION);
}
$payload = $this->_get_binary_packet($skip_channel_filter);
break;
case NET_SSH2_MSG_CHANNEL_OPEN: // see http://tools.ietf.org/html/rfc4254#section-5.1
$this->_string_shift($payload, 1);
if (strlen($payload) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($payload, 4)));
$data = $this->_string_shift($payload, $length);
if (strlen($payload) < 4) {
return false;
}
extract(unpack('Nserver_channel', $this->_string_shift($payload, 4)));
switch ($data) {
case 'auth-agent':
case 'auth-agent@openssh.com':
if (isset($this->agent)) {
$new_channel = self::CHANNEL_AGENT_FORWARD;
if (strlen($payload) < 8) {
return false;
}
extract(unpack('Nremote_window_size', $this->_string_shift($payload, 4)));
extract(unpack('Nremote_maximum_packet_size', $this->_string_shift($payload, 4)));
$this->packet_size_client_to_server[$new_channel] = $remote_window_size;
$this->window_size_server_to_client[$new_channel] = $remote_maximum_packet_size;
$this->window_size_client_to_server[$new_channel] = $this->window_size;
$packet_size = 0x4000;
$packet = pack(
'CN4',
NET_SSH2_MSG_CHANNEL_OPEN_CONFIRMATION,
$server_channel,
$new_channel,
$packet_size,
$packet_size
);
$this->server_channels[$new_channel] = $server_channel;
$this->channel_status[$new_channel] = NET_SSH2_MSG_CHANNEL_OPEN_CONFIRMATION;
if (!$this->_send_binary_packet($packet)) {
return false;
}
}
break;
default:
$packet = pack(
'CN3a*Na*',
NET_SSH2_MSG_REQUEST_FAILURE,
$server_channel,
NET_SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED,
0,
'',
0,
''
);
if (!$this->_send_binary_packet($packet)) {
return $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION);
}
}
$payload = $this->_get_binary_packet($skip_channel_filter);
break;
case NET_SSH2_MSG_CHANNEL_WINDOW_ADJUST:
$this->_string_shift($payload, 1);
if (strlen($payload) < 8) {
return false;
}
extract(unpack('Nchannel', $this->_string_shift($payload, 4)));
extract(unpack('Nwindow_size', $this->_string_shift($payload, 4)));
$this->window_size_client_to_server[$channel]+= $window_size;
$payload = ($this->bitmap & self::MASK_WINDOW_ADJUST) ? true : $this->_get_binary_packet($skip_channel_filter);
}
}
return $payload;
}
/**
* Enable Quiet Mode
*
* Suppress stderr from output
*
* @access public
*/
function enableQuietMode()
{
$this->quiet_mode = true;
}
/**
* Disable Quiet Mode
*
* Show stderr in output
*
* @access public
*/
function disableQuietMode()
{
$this->quiet_mode = false;
}
/**
* Returns whether Quiet Mode is enabled or not
*
* @see self::enableQuietMode()
* @see self::disableQuietMode()
* @access public
* @return bool
*/
function isQuietModeEnabled()
{
return $this->quiet_mode;
}
/**
* Enable request-pty when using exec()
*
* @access public
*/
function enablePTY()
{
$this->request_pty = true;
}
/**
* Disable request-pty when using exec()
*
* @access public
*/
function disablePTY()
{
if ($this->in_request_pty_exec) {
$this->_close_channel(self::CHANNEL_EXEC);
$this->in_request_pty_exec = false;
}
$this->request_pty = false;
}
/**
* Returns whether request-pty is enabled or not
*
* @see self::enablePTY()
* @see self::disablePTY()
* @access public
* @return bool
*/
function isPTYEnabled()
{
return $this->request_pty;
}
/**
* Gets channel data
*
* Returns the data as a string if it's available and false if not.
*
* @param int $client_channel
* @param bool $skip_extended
* @return mixed|bool
* @access private
*/
function _get_channel_packet($client_channel, $skip_extended = false)
{
if (!empty($this->channel_buffers[$client_channel])) {
switch ($this->channel_status[$client_channel]) {
case NET_SSH2_MSG_CHANNEL_REQUEST:
foreach ($this->channel_buffers[$client_channel] as $i => $packet) {
switch (ord($packet[0])) {
case NET_SSH2_MSG_CHANNEL_SUCCESS:
case NET_SSH2_MSG_CHANNEL_FAILURE:
unset($this->channel_buffers[$client_channel][$i]);
return substr($packet, 1);
}
}
break;
default:
return substr(array_shift($this->channel_buffers[$client_channel]), 1);
}
}
while (true) {
if ($this->binary_packet_buffer !== false) {
$response = $this->binary_packet_buffer;
$this->binary_packet_buffer = false;
} else {
$response = $this->_get_binary_packet(true);
if ($response === true && $this->is_timeout) {
if ($client_channel == self::CHANNEL_EXEC && !$this->request_pty) {
$this->_close_channel($client_channel);
}
return true;
}
if ($response === false) {
$this->bitmap = 0;
user_error('Connection closed by server');
return false;
}
}
if ($client_channel == -1 && $response === true) {
return true;
}
if (!strlen($response)) {
return false;
}
extract(unpack('Ctype', $this->_string_shift($response, 1)));
if (strlen($response) < 4) {
return false;
}
if ($type == NET_SSH2_MSG_CHANNEL_OPEN) {
extract(unpack('Nlength', $this->_string_shift($response, 4)));
} else {
extract(unpack('Nchannel', $this->_string_shift($response, 4)));
}
// will not be setup yet on incoming channel open request
if (isset($channel) && isset($this->channel_status[$channel]) && isset($this->window_size_server_to_client[$channel])) {
$this->window_size_server_to_client[$channel]-= strlen($response);
// resize the window, if appropriate
if ($this->window_size_server_to_client[$channel] < 0) {
// PuTTY does something more analogous to the following:
//if ($this->window_size_server_to_client[$channel] < 0x3FFFFFFF) {
$packet = pack('CNN', NET_SSH2_MSG_CHANNEL_WINDOW_ADJUST, $this->server_channels[$channel], $this->window_resize);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$this->window_size_server_to_client[$channel]+= $this->window_resize;
}
switch ($type) {
case NET_SSH2_MSG_CHANNEL_EXTENDED_DATA:
/*
if ($client_channel == self::CHANNEL_EXEC) {
$this->_send_channel_packet($client_channel, chr(0));
}
*/
// currently, there's only one possible value for $data_type_code: NET_SSH2_EXTENDED_DATA_STDERR
if (strlen($response) < 8) {
return false;
}
extract(unpack('Ndata_type_code/Nlength', $this->_string_shift($response, 8)));
$data = $this->_string_shift($response, $length);
$this->stdErrorLog.= $data;
if ($skip_extended || $this->quiet_mode) {
continue 2;
}
if ($client_channel == $channel && $this->channel_status[$channel] == NET_SSH2_MSG_CHANNEL_DATA) {
return $data;
}
$this->channel_buffers[$channel][] = chr($type) . $data;
continue 2;
case NET_SSH2_MSG_CHANNEL_REQUEST:
if ($this->channel_status[$channel] == NET_SSH2_MSG_CHANNEL_CLOSE) {
continue 2;
}
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$value = $this->_string_shift($response, $length);
switch ($value) {
case 'exit-signal':
$this->_string_shift($response, 1);
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$this->errors[] = 'SSH_MSG_CHANNEL_REQUEST (exit-signal): ' . $this->_string_shift($response, $length);
$this->_string_shift($response, 1);
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
if ($length) {
$this->errors[count($this->errors)].= "\r\n" . $this->_string_shift($response, $length);
}
$this->_send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_EOF, $this->server_channels[$client_channel]));
$this->_send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_CLOSE, $this->server_channels[$channel]));
$this->channel_status[$channel] = NET_SSH2_MSG_CHANNEL_EOF;
continue 3;
case 'exit-status':
if (strlen($response) < 5) {
return false;
}
extract(unpack('Cfalse/Nexit_status', $this->_string_shift($response, 5)));
$this->exit_status = $exit_status;
// "The client MAY ignore these messages."
// -- http://tools.ietf.org/html/rfc4254#section-6.10
continue 3;
default:
// "Some systems may not implement signals, in which case they SHOULD ignore this message."
// -- http://tools.ietf.org/html/rfc4254#section-6.9
continue 3;
}
}
switch ($this->channel_status[$channel]) {
case NET_SSH2_MSG_CHANNEL_OPEN:
switch ($type) {
case NET_SSH2_MSG_CHANNEL_OPEN_CONFIRMATION:
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nserver_channel', $this->_string_shift($response, 4)));
$this->server_channels[$channel] = $server_channel;
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nwindow_size', $this->_string_shift($response, 4)));
if ($window_size < 0) {
$window_size&= 0x7FFFFFFF;
$window_size+= 0x80000000;
}
$this->window_size_client_to_server[$channel] = $window_size;
if (strlen($response) < 4) {
return false;
}
$temp = unpack('Npacket_size_client_to_server', $this->_string_shift($response, 4));
$this->packet_size_client_to_server[$channel] = $temp['packet_size_client_to_server'];
$result = $client_channel == $channel ? true : $this->_get_channel_packet($client_channel, $skip_extended);
$this->_on_channel_open();
return $result;
case NET_SSH2_MSG_CHANNEL_OPEN_FAILURE:
user_error('Unable to open channel');
return $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION);
default:
if ($client_channel == $channel) {
user_error('Unexpected response to open request');
return $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION);
}
return $this->_get_channel_packet($client_channel, $skip_extended);
}
break;
case NET_SSH2_MSG_CHANNEL_REQUEST:
switch ($type) {
case NET_SSH2_MSG_CHANNEL_SUCCESS:
return true;
case NET_SSH2_MSG_CHANNEL_FAILURE:
return false;
case NET_SSH2_MSG_CHANNEL_DATA:
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$data = $this->_string_shift($response, $length);
$this->channel_buffers[$channel][] = chr($type) . $data;
return $this->_get_channel_packet($client_channel, $skip_extended);
default:
user_error('Unable to fulfill channel request');
return $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION);
}
case NET_SSH2_MSG_CHANNEL_CLOSE:
return $type == NET_SSH2_MSG_CHANNEL_CLOSE ? true : $this->_get_channel_packet($client_channel, $skip_extended);
}
}
// ie. $this->channel_status[$channel] == NET_SSH2_MSG_CHANNEL_DATA
switch ($type) {
case NET_SSH2_MSG_CHANNEL_DATA:
/*
if ($channel == self::CHANNEL_EXEC) {
// SCP requires null packets, such as this, be sent. further, in the case of the ssh.com SSH server
// this actually seems to make things twice as fast. more to the point, the message right after
// SSH_MSG_CHANNEL_DATA (usually SSH_MSG_IGNORE) won't block for as long as it would have otherwise.
// in OpenSSH it slows things down but only by a couple thousandths of a second.
$this->_send_channel_packet($channel, chr(0));
}
*/
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$data = $this->_string_shift($response, $length);
if ($channel == self::CHANNEL_AGENT_FORWARD) {
$agent_response = $this->agent->_forward_data($data);
if (!is_bool($agent_response)) {
$this->_send_channel_packet($channel, $agent_response);
}
break;
}
if ($client_channel == $channel) {
return $data;
}
$this->channel_buffers[$channel][] = chr($type) . $data;
break;
case NET_SSH2_MSG_CHANNEL_CLOSE:
$this->curTimeout = 5;
if ($this->bitmap & self::MASK_SHELL) {
$this->bitmap&= ~self::MASK_SHELL;
}
if ($this->channel_status[$channel] != NET_SSH2_MSG_CHANNEL_EOF) {
$this->_send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_CLOSE, $this->server_channels[$channel]));
}
$this->channel_status[$channel] = NET_SSH2_MSG_CHANNEL_CLOSE;
if ($client_channel == $channel) {
return true;
}
case NET_SSH2_MSG_CHANNEL_EOF:
break;
default:
user_error("Error reading channel data ($type)");
return $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION);
}
}
}
/**
* Sends Binary Packets
*
* See '6. Binary Packet Protocol' of rfc4253 for more info.
*
* @param string $data
* @param string $logged
* @see self::_get_binary_packet()
* @return bool
* @access private
*/
function _send_binary_packet($data, $logged = null)
{
if (!is_resource($this->fsock) || feof($this->fsock)) {
$this->bitmap = 0;
user_error('Connection closed prematurely');
return false;
}
if (!isset($logged)) {
$logged = $data;
}
switch ($this->compress) {
case self::NET_SSH2_COMPRESSION_ZLIB_AT_OPENSSH:
if (!$this->isAuthenticated()) {
break;
}
case self::NET_SSH2_COMPRESSION_ZLIB:
if (!$this->regenerate_compression_context) {
$header = '';
} else {
$this->regenerate_compression_context = false;
$this->compress_context = deflate_init(ZLIB_ENCODING_RAW, array('window' => 15));
$header = "\x78\x9C";
}
if ($this->compress_context) {
$data = $header . deflate_add($this->compress_context, $data, ZLIB_PARTIAL_FLUSH);
}
}
// 4 (packet length) + 1 (padding length) + 4 (minimal padding amount) == 9
$packet_length = strlen($data) + 9;
// round up to the nearest $this->encrypt_block_size
$packet_length+= (($this->encrypt_block_size - 1) * $packet_length) % $this->encrypt_block_size;
// subtracting strlen($data) is obvious - subtracting 5 is necessary because of packet_length and padding_length
$padding_length = $packet_length - strlen($data) - 5;
$padding = Random::string($padding_length);
// we subtract 4 from packet_length because the packet_length field isn't supposed to include itself
$packet = pack('NCa*', $packet_length - 4, $padding_length, $data . $padding);
$hmac = $this->hmac_create !== false ? $this->hmac_create->hash(pack('Na*', $this->send_seq_no, $packet)) : '';
$this->send_seq_no++;
if ($this->encrypt !== false) {
$packet = $this->encrypt->encrypt($packet);
}
$packet.= $hmac;
$start = microtime(true);
$result = strlen($packet) == @fputs($this->fsock, $packet);
$stop = microtime(true);
if (defined('NET_SSH2_LOGGING')) {
$current = microtime(true);
$message_number = isset($this->message_numbers[ord($logged[0])]) ? $this->message_numbers[ord($logged[0])] : 'UNKNOWN (' . ord($logged[0]) . ')';
$message_number = '-> ' . $message_number .
' (since last: ' . round($current - $this->last_packet, 4) . ', network: ' . round($stop - $start, 4) . 's)';
$this->_append_log($message_number, $logged);
$this->last_packet = $current;
}
return $result;
}
/**
* Logs data packets
*
* Makes sure that only the last 1MB worth of packets will be logged
*
* @param string $message_number
* @param string $message
* @access private
*/
function _append_log($message_number, $message)
{
// remove the byte identifying the message type from all but the first two messages (ie. the identification strings)
if (strlen($message_number) > 2) {
$this->_string_shift($message);
}
switch (NET_SSH2_LOGGING) {
// useful for benchmarks
case self::LOG_SIMPLE:
$this->message_number_log[] = $message_number;
break;
// the most useful log for SSH2
case self::LOG_COMPLEX:
$this->message_number_log[] = $message_number;
$this->log_size+= strlen($message);
$this->message_log[] = $message;
while ($this->log_size > self::LOG_MAX_SIZE) {
$this->log_size-= strlen(array_shift($this->message_log));
array_shift($this->message_number_log);
}
break;
// dump the output out realtime; packets may be interspersed with non packets,
// passwords won't be filtered out and select other packets may not be correctly
// identified
case self::LOG_REALTIME:
switch (PHP_SAPI) {
case 'cli':
$start = $stop = "\r\n";
break;
default:
$start = '<pre>';
$stop = '</pre>';
}
echo $start . $this->_format_log(array($message), array($message_number)) . $stop;
@flush();
@ob_flush();
break;
// basically the same thing as self::LOG_REALTIME with the caveat that self::LOG_REALTIME_FILE
// needs to be defined and that the resultant log file will be capped out at self::LOG_MAX_SIZE.
// the earliest part of the log file is denoted by the first <<< START >>> and is not going to necessarily
// at the beginning of the file
case self::LOG_REALTIME_FILE:
if (!isset($this->realtime_log_file)) {
// PHP doesn't seem to like using constants in fopen()
$filename = self::LOG_REALTIME_FILENAME;
$fp = fopen($filename, 'w');
$this->realtime_log_file = $fp;
}
if (!is_resource($this->realtime_log_file)) {
break;
}
$entry = $this->_format_log(array($message), array($message_number));
if ($this->realtime_log_wrap) {
$temp = "<<< START >>>\r\n";
$entry.= $temp;
fseek($this->realtime_log_file, ftell($this->realtime_log_file) - strlen($temp));
}
$this->realtime_log_size+= strlen($entry);
if ($this->realtime_log_size > self::LOG_MAX_SIZE) {
fseek($this->realtime_log_file, 0);
$this->realtime_log_size = strlen($entry);
$this->realtime_log_wrap = true;
}
fputs($this->realtime_log_file, $entry);
}
}
/**
* Sends channel data
*
* Spans multiple SSH_MSG_CHANNEL_DATAs if appropriate
*
* @param int $client_channel
* @param string $data
* @return bool
* @access private
*/
function _send_channel_packet($client_channel, $data)
{
while (strlen($data)) {
if (!$this->window_size_client_to_server[$client_channel]) {
$this->bitmap^= self::MASK_WINDOW_ADJUST;
// using an invalid channel will let the buffers be built up for the valid channels
$this->_get_channel_packet(-1);
$this->bitmap^= self::MASK_WINDOW_ADJUST;
}
/* The maximum amount of data allowed is determined by the maximum
packet size for the channel, and the current window size, whichever
is smaller.
-- http://tools.ietf.org/html/rfc4254#section-5.2 */
$max_size = min(
$this->packet_size_client_to_server[$client_channel],
$this->window_size_client_to_server[$client_channel]
);
$temp = $this->_string_shift($data, $max_size);
$packet = pack(
'CN2a*',
NET_SSH2_MSG_CHANNEL_DATA,
$this->server_channels[$client_channel],
strlen($temp),
$temp
);
$this->window_size_client_to_server[$client_channel]-= strlen($temp);
if (!$this->_send_binary_packet($packet)) {
return false;
}
}
return true;
}
/**
* Closes and flushes a channel
*
* \phpseclib\Net\SSH2 doesn't properly close most channels. For exec() channels are normally closed by the server
* and for SFTP channels are presumably closed when the client disconnects. This functions is intended
* for SCP more than anything.
*
* @param int $client_channel
* @param bool $want_reply
* @return bool
* @access private
*/
function _close_channel($client_channel, $want_reply = false)
{
// see http://tools.ietf.org/html/rfc4254#section-5.3
$this->_send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_EOF, $this->server_channels[$client_channel]));
if (!$want_reply) {
$this->_send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_CLOSE, $this->server_channels[$client_channel]));
}
$this->channel_status[$client_channel] = NET_SSH2_MSG_CHANNEL_CLOSE;
$this->curTimeout = 5;
while (!is_bool($this->_get_channel_packet($client_channel))) {
}
if ($this->is_timeout) {
$this->disconnect();
}
if ($want_reply) {
$this->_send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_CLOSE, $this->server_channels[$client_channel]));
}
if ($this->bitmap & self::MASK_SHELL) {
$this->bitmap&= ~self::MASK_SHELL;
}
}
/**
* Disconnect
*
* @param int $reason
* @return bool
* @access private
*/
function _disconnect($reason)
{
if ($this->bitmap & self::MASK_CONNECTED) {
$data = pack('CNNa*Na*', NET_SSH2_MSG_DISCONNECT, $reason, 0, '', 0, '');
$this->_send_binary_packet($data);
}
$this->bitmap = 0;
if (is_resource($this->fsock) && get_resource_type($this->fsock) == 'stream') {
fclose($this->fsock);
}
return false;
}
/**
* String Shift
*
* Inspired by array_shift
*
* @param string $string
* @param int $index
* @return string
* @access private
*/
function _string_shift(&$string, $index = 1)
{
$substr = substr($string, 0, $index);
$string = substr($string, $index);
return $substr;
}
/**
* Define Array
*
* Takes any number of arrays whose indices are integers and whose values are strings and defines a bunch of
* named constants from it, using the value as the name of the constant and the index as the value of the constant.
* If any of the constants that would be defined already exists, none of the constants will be defined.
*
* @access private
*/
function _define_array()
{
$args = func_get_args();
foreach ($args as $arg) {
foreach ($arg as $key => $value) {
if (!defined($value)) {
define($value, $key);
} else {
break 2;
}
}
}
}
/**
* Returns a log of the packets that have been sent and received.
*
* Returns a string if NET_SSH2_LOGGING == self::LOG_COMPLEX, an array if NET_SSH2_LOGGING == self::LOG_SIMPLE and false if !defined('NET_SSH2_LOGGING')
*
* @access public
* @return array|false|string
*/
function getLog()
{
if (!defined('NET_SSH2_LOGGING')) {
return false;
}
switch (NET_SSH2_LOGGING) {
case self::LOG_SIMPLE:
return $this->message_number_log;
case self::LOG_COMPLEX:
$log = $this->_format_log($this->message_log, $this->message_number_log);
return PHP_SAPI == 'cli' ? $log : '<pre>' . $log . '</pre>';
default:
return false;
}
}
/**
* Formats a log for printing
*
* @param array $message_log
* @param array $message_number_log
* @access private
* @return string
*/
function _format_log($message_log, $message_number_log)
{
$output = '';
for ($i = 0; $i < count($message_log); $i++) {
$output.= $message_number_log[$i] . "\r\n";
$current_log = $message_log[$i];
$j = 0;
do {
if (strlen($current_log)) {
$output.= str_pad(dechex($j), 7, '0', STR_PAD_LEFT) . '0 ';
}
$fragment = $this->_string_shift($current_log, $this->log_short_width);
$hex = substr(preg_replace_callback('#.#s', array($this, '_format_log_helper'), $fragment), strlen($this->log_boundary));
// replace non ASCII printable characters with dots
// http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters
// also replace < with a . since < messes up the output on web browsers
$raw = preg_replace('#[^\x20-\x7E]|<#', '.', $fragment);
$output.= str_pad($hex, $this->log_long_width - $this->log_short_width, ' ') . $raw . "\r\n";
$j++;
} while (strlen($current_log));
$output.= "\r\n";
}
return $output;
}
/**
* Helper function for _format_log
*
* For use with preg_replace_callback()
*
* @param array $matches
* @access private
* @return string
*/
function _format_log_helper($matches)
{
return $this->log_boundary . str_pad(dechex(ord($matches[0])), 2, '0', STR_PAD_LEFT);
}
/**
* Helper function for agent->_on_channel_open()
*
* Used when channels are created to inform agent
* of said channel opening. Must be called after
* channel open confirmation received
*
* @access private
*/
function _on_channel_open()
{
if (isset($this->agent)) {
$this->agent->_on_channel_open($this);
}
}
/**
* Returns the first value of the intersection of two arrays or false if
* the intersection is empty. The order is defined by the first parameter.
*
* @param array $array1
* @param array $array2
* @return mixed False if intersection is empty, else intersected value.
* @access private
*/
function _array_intersect_first($array1, $array2)
{
foreach ($array1 as $value) {
if (in_array($value, $array2)) {
return $value;
}
}
return false;
}
/**
* Returns all errors
*
* @return string[]
* @access public
*/
function getErrors()
{
return $this->errors;
}
/**
* Returns the last error
*
* @return string
* @access public
*/
function getLastError()
{
$count = count($this->errors);
if ($count > 0) {
return $this->errors[$count - 1];
}
}
/**
* Return the server identification.
*
* @return string
* @access public
*/
function getServerIdentification()
{
$this->_connect();
return $this->server_identifier;
}
/**
* Return a list of the key exchange algorithms the server supports.
*
* @return array
* @access public
*/
function getKexAlgorithms()
{
$this->_connect();
return $this->kex_algorithms;
}
/**
* Return a list of the host key (public key) algorithms the server supports.
*
* @return array
* @access public
*/
function getServerHostKeyAlgorithms()
{
$this->_connect();
return $this->server_host_key_algorithms;
}
/**
* Return a list of the (symmetric key) encryption algorithms the server supports, when receiving stuff from the client.
*
* @return array
* @access public
*/
function getEncryptionAlgorithmsClient2Server()
{
$this->_connect();
return $this->encryption_algorithms_client_to_server;
}
/**
* Return a list of the (symmetric key) encryption algorithms the server supports, when sending stuff to the client.
*
* @return array
* @access public
*/
function getEncryptionAlgorithmsServer2Client()
{
$this->_connect();
return $this->encryption_algorithms_server_to_client;
}
/**
* Return a list of the MAC algorithms the server supports, when receiving stuff from the client.
*
* @return array
* @access public
*/
function getMACAlgorithmsClient2Server()
{
$this->_connect();
return $this->mac_algorithms_client_to_server;
}
/**
* Return a list of the MAC algorithms the server supports, when sending stuff to the client.
*
* @return array
* @access public
*/
function getMACAlgorithmsServer2Client()
{
$this->_connect();
return $this->mac_algorithms_server_to_client;
}
/**
* Return a list of the compression algorithms the server supports, when receiving stuff from the client.
*
* @return array
* @access public
*/
function getCompressionAlgorithmsClient2Server()
{
$this->_connect();
return $this->compression_algorithms_client_to_server;
}
/**
* Return a list of the compression algorithms the server supports, when sending stuff to the client.
*
* @return array
* @access public
*/
function getCompressionAlgorithmsServer2Client()
{
$this->_connect();
return $this->compression_algorithms_server_to_client;
}
/**
* Return a list of the languages the server supports, when sending stuff to the client.
*
* @return array
* @access public
*/
function getLanguagesServer2Client()
{
$this->_connect();
return $this->languages_server_to_client;
}
/**
* Return a list of the languages the server supports, when receiving stuff from the client.
*
* @return array
* @access public
*/
function getLanguagesClient2Server()
{
$this->_connect();
return $this->languages_client_to_server;
}
/**
* Returns a list of algorithms the server supports
*
* @return array
* @access public
*/
function getServerAlgorithms()
{
$this->_connect();
return array(
'kex' => $this->kex_algorithms,
'hostkey' => $this->server_host_key_algorithms,
'client_to_server' => array(
'crypt' => $this->encryption_algorithms_client_to_server,
'mac' => $this->mac_algorithms_client_to_server,
'comp' => $this->compression_algorithms_client_to_server,
'lang' => $this->languages_client_to_server
),
'server_to_client' => array(
'crypt' => $this->encryption_algorithms_server_to_client,
'mac' => $this->mac_algorithms_server_to_client,
'comp' => $this->compression_algorithms_server_to_client,
'lang' => $this->languages_server_to_client
)
);
}
/**
* Returns a list of KEX algorithms that phpseclib supports
*
* @return array
* @access public
*/
function getSupportedKEXAlgorithms()
{
$kex_algorithms = array(
// Elliptic Curve Diffie-Hellman Key Agreement (ECDH) using
// Curve25519. See doc/curve25519-sha256@libssh.org.txt in the
// libssh repository for more information.
'curve25519-sha256@libssh.org',
'diffie-hellman-group-exchange-sha256',// RFC 4419
'diffie-hellman-group-exchange-sha1', // RFC 4419
// Diffie-Hellman Key Agreement (DH) using integer modulo prime
// groups.
'diffie-hellman-group14-sha1', // REQUIRED
'diffie-hellman-group1-sha1', // REQUIRED
);
if (!function_exists('sodium_crypto_box_publickey_from_secretkey')) {
$kex_algorithms = array_diff(
$kex_algorithms,
array('curve25519-sha256@libssh.org')
);
}
return $kex_algorithms;
}
/**
* Returns a list of host key algorithms that phpseclib supports
*
* @return array
* @access public
*/
function getSupportedHostKeyAlgorithms()
{
return array(
'rsa-sha2-256', // RFC 8332
'rsa-sha2-512', // RFC 8332
'ssh-rsa', // RECOMMENDED sign Raw RSA Key
'ssh-dss' // REQUIRED sign Raw DSS Key
);
}
/**
* Returns a list of symmetric key algorithms that phpseclib supports
*
* @return array
* @access public
*/
function getSupportedEncryptionAlgorithms()
{
$algos = array(
// from <http://tools.ietf.org/html/rfc4345#section-4>:
'arcfour256',
'arcfour128',
//'arcfour', // OPTIONAL the ARCFOUR stream cipher with a 128-bit key
// CTR modes from <http://tools.ietf.org/html/rfc4344#section-4>:
'aes128-ctr', // RECOMMENDED AES (Rijndael) in SDCTR mode, with 128-bit key
'aes192-ctr', // RECOMMENDED AES with 192-bit key
'aes256-ctr', // RECOMMENDED AES with 256-bit key
'twofish128-ctr', // OPTIONAL Twofish in SDCTR mode, with 128-bit key
'twofish192-ctr', // OPTIONAL Twofish with 192-bit key
'twofish256-ctr', // OPTIONAL Twofish with 256-bit key
'aes128-cbc', // RECOMMENDED AES with a 128-bit key
'aes192-cbc', // OPTIONAL AES with a 192-bit key
'aes256-cbc', // OPTIONAL AES in CBC mode, with a 256-bit key
'twofish128-cbc', // OPTIONAL Twofish with a 128-bit key
'twofish192-cbc', // OPTIONAL Twofish with a 192-bit key
'twofish256-cbc',
'twofish-cbc', // OPTIONAL alias for "twofish256-cbc"
// (this is being retained for historical reasons)
'blowfish-ctr', // OPTIONAL Blowfish in SDCTR mode
'blowfish-cbc', // OPTIONAL Blowfish in CBC mode
'3des-ctr', // RECOMMENDED Three-key 3DES in SDCTR mode
'3des-cbc', // REQUIRED three-key 3DES in CBC mode
//'none' // OPTIONAL no encryption; NOT RECOMMENDED
);
if ($this->crypto_engine) {
$engines = array($this->crypto_engine);
} else {
$engines = array(
Base::ENGINE_OPENSSL,
Base::ENGINE_MCRYPT,
Base::ENGINE_INTERNAL
);
}
$ciphers = array();
foreach ($engines as $engine) {
foreach ($algos as $algo) {
$obj = $this->_encryption_algorithm_to_crypt_instance($algo);
if ($obj instanceof Rijndael) {
$obj->setKeyLength(preg_replace('#[^\d]#', '', $algo));
}
switch ($algo) {
case 'arcfour128':
case 'arcfour256':
if ($engine != Base::ENGINE_INTERNAL) {
continue 2;
}
}
if ($obj->isValidEngine($engine)) {
$algos = array_diff($algos, array($algo));
$ciphers[] = $algo;
}
}
}
return $ciphers;
}
/**
* Returns a list of MAC algorithms that phpseclib supports
*
* @return array
* @access public
*/
function getSupportedMACAlgorithms()
{
return array(
// from <http://www.ietf.org/rfc/rfc6668.txt>:
'hmac-sha2-256',// RECOMMENDED HMAC-SHA256 (digest length = key length = 32)
'hmac-sha1-96', // RECOMMENDED first 96 bits of HMAC-SHA1 (digest length = 12, key length = 20)
'hmac-sha1', // REQUIRED HMAC-SHA1 (digest length = key length = 20)
'hmac-md5-96', // OPTIONAL first 96 bits of HMAC-MD5 (digest length = 12, key length = 16)
'hmac-md5', // OPTIONAL HMAC-MD5 (digest length = key length = 16)
//'none' // OPTIONAL no MAC; NOT RECOMMENDED
);
}
/**
* Returns a list of compression algorithms that phpseclib supports
*
* @return array
* @access public
*/
function getSupportedCompressionAlgorithms()
{
$algos = array('none'); // REQUIRED no compression
if (function_exists('deflate_init')) {
$algos[] = 'zlib@openssh.com'; // https://datatracker.ietf.org/doc/html/draft-miller-secsh-compression-delayed
$algos[] = 'zlib';
}
return $algos;
}
/**
* Return list of negotiated algorithms
*
* Uses the same format as https://www.php.net/ssh2-methods-negotiated
*
* @return array
* @access public
*/
function getAlgorithmsNegotiated()
{
$this->_connect();
$compression_map = array(
self::NET_SSH2_COMPRESSION_NONE => 'none',
self::NET_SSH2_COMPRESSION_ZLIB => 'zlib',
self::NET_SSH2_COMPRESSION_ZLIB_AT_OPENSSH => 'zlib@openssh.com'
);
return array(
'kex' => $this->kex_algorithm,
'hostkey' => $this->signature_format,
'client_to_server' => array(
'crypt' => $this->encrypt->name,
'mac' => $this->hmac_create->name,
'comp' => $compression_map[$this->compress],
),
'server_to_client' => array(
'crypt' => $this->decrypt->name,
'mac' => $this->hmac_check->name,
'comp' => $compression_map[$this->decompress],
)
);
}
/**
* Accepts an associative array with up to four parameters as described at
* <https://www.php.net/manual/en/function.ssh2-connect.php>
*
* @param array $methods
* @access public
*/
function setPreferredAlgorithms($methods)
{
$preferred = $methods;
if (isset($preferred['kex'])) {
$preferred['kex'] = array_intersect(
$preferred['kex'],
$this->getSupportedKEXAlgorithms()
);
}
if (isset($preferred['hostkey'])) {
$preferred['hostkey'] = array_intersect(
$preferred['hostkey'],
$this->getSupportedHostKeyAlgorithms()
);
}
$keys = array('client_to_server', 'server_to_client');
foreach ($keys as $key) {
if (isset($preferred[$key])) {
$a = &$preferred[$key];
if (isset($a['crypt'])) {
$a['crypt'] = array_intersect(
$a['crypt'],
$this->getSupportedEncryptionAlgorithms()
);
}
if (isset($a['comp'])) {
$a['comp'] = array_intersect(
$a['comp'],
$this->getSupportedCompressionAlgorithms()
);
}
if (isset($a['mac'])) {
$a['mac'] = array_intersect(
$a['mac'],
$this->getSupportedMACAlgorithms()
);
}
}
}
$keys = array(
'kex',
'hostkey',
'client_to_server/crypt',
'client_to_server/comp',
'client_to_server/mac',
'server_to_client/crypt',
'server_to_client/comp',
'server_to_client/mac',
);
foreach ($keys as $key) {
$p = $preferred;
$m = $methods;
$subkeys = explode('/', $key);
foreach ($subkeys as $subkey) {
if (!isset($p[$subkey])) {
continue 2;
}
$p = $p[$subkey];
$m = $m[$subkey];
}
if (count($p) != count($m)) {
$diff = array_diff($m, $p);
$msg = count($diff) == 1 ?
' is not a supported algorithm' :
' are not supported algorithms';
user_error(implode(', ', $diff) . $msg);
return false;
}
}
$this->preferred = $preferred;
}
/**
* Returns the banner message.
*
* Quoting from the RFC, "in some jurisdictions, sending a warning message before
* authentication may be relevant for getting legal protection."
*
* @return string
* @access public
*/
function getBannerMessage()
{
return $this->banner_message;
}
/**
* Returns the server public host key.
*
* Caching this the first time you connect to a server and checking the result on subsequent connections
* is recommended. Returns false if the server signature is not signed correctly with the public host key.
*
* @return mixed
* @access public
*/
function getServerPublicHostKey()
{
if (!($this->bitmap & self::MASK_CONSTRUCTOR)) {
if (!$this->_connect()) {
return false;
}
}
$signature = $this->signature;
$server_public_host_key = $this->server_public_host_key;
if (strlen($server_public_host_key) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($server_public_host_key, 4)));
$this->_string_shift($server_public_host_key, $length);
if ($this->signature_validated) {
return $this->bitmap ?
$this->signature_format . ' ' . base64_encode($this->server_public_host_key) :
false;
}
$this->signature_validated = true;
switch ($this->signature_format) {
case 'ssh-dss':
$zero = new BigInteger();
if (strlen($server_public_host_key) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($server_public_host_key, 4));
$p = new BigInteger($this->_string_shift($server_public_host_key, $temp['length']), -256);
if (strlen($server_public_host_key) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($server_public_host_key, 4));
$q = new BigInteger($this->_string_shift($server_public_host_key, $temp['length']), -256);
if (strlen($server_public_host_key) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($server_public_host_key, 4));
$g = new BigInteger($this->_string_shift($server_public_host_key, $temp['length']), -256);
if (strlen($server_public_host_key) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($server_public_host_key, 4));
$y = new BigInteger($this->_string_shift($server_public_host_key, $temp['length']), -256);
/* The value for 'dss_signature_blob' is encoded as a string containing
r, followed by s (which are 160-bit integers, without lengths or
padding, unsigned, and in network byte order). */
$temp = unpack('Nlength', $this->_string_shift($signature, 4));
if ($temp['length'] != 40) {
user_error('Invalid signature');
return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
}
$r = new BigInteger($this->_string_shift($signature, 20), 256);
$s = new BigInteger($this->_string_shift($signature, 20), 256);
switch (true) {
case $r->equals($zero):
case $r->compare($q) >= 0:
case $s->equals($zero):
case $s->compare($q) >= 0:
user_error('Invalid signature');
return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
}
$w = $s->modInverse($q);
$u1 = $w->multiply(new BigInteger(sha1($this->exchange_hash), 16));
list(, $u1) = $u1->divide($q);
$u2 = $w->multiply($r);
list(, $u2) = $u2->divide($q);
$g = $g->modPow($u1, $p);
$y = $y->modPow($u2, $p);
$v = $g->multiply($y);
list(, $v) = $v->divide($p);
list(, $v) = $v->divide($q);
if (!$v->equals($r)) {
user_error('Bad server signature');
return $this->_disconnect(NET_SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE);
}
break;
case 'ssh-rsa':
case 'rsa-sha2-256':
case 'rsa-sha2-512':
if (strlen($server_public_host_key) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($server_public_host_key, 4));
$e = new BigInteger($this->_string_shift($server_public_host_key, $temp['length']), -256);
if (strlen($server_public_host_key) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($server_public_host_key, 4));
$rawN = $this->_string_shift($server_public_host_key, $temp['length']);
$n = new BigInteger($rawN, -256);
$nLength = strlen(ltrim($rawN, "\0"));
/*
if (strlen($signature) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($signature, 4));
$signature = $this->_string_shift($signature, $temp['length']);
$rsa = new RSA();
switch ($this->signature_format) {
case 'rsa-sha2-512':
$hash = 'sha512';
break;
case 'rsa-sha2-256':
$hash = 'sha256';
break;
//case 'ssh-rsa':
default:
$hash = 'sha1';
}
$rsa->setHash($hash);
$rsa->setSignatureMode(RSA::SIGNATURE_PKCS1);
$rsa->loadKey(array('e' => $e, 'n' => $n), RSA::PUBLIC_FORMAT_RAW);
if (!$rsa->verify($this->exchange_hash, $signature)) {
user_error('Bad server signature');
return $this->_disconnect(NET_SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE);
}
*/
if (strlen($signature) < 4) {
return false;
}
$temp = unpack('Nlength', $this->_string_shift($signature, 4));
$s = new BigInteger($this->_string_shift($signature, $temp['length']), 256);
// validate an RSA signature per "8.2 RSASSA-PKCS1-v1_5", "5.2.2 RSAVP1", and "9.1 EMSA-PSS" in the
// following URL:
// ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-1/pkcs-1v2-1.pdf
// also, see SSHRSA.c (rsa2_verifysig) in PuTTy's source.
if ($s->compare(new BigInteger()) < 0 || $s->compare($n->subtract(new BigInteger(1))) > 0) {
user_error('Invalid signature');
return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED);
}
$s = $s->modPow($e, $n);
$s = $s->toBytes();
switch ($this->signature_format) {
case 'rsa-sha2-512':
$hash = 'sha512';
break;
case 'rsa-sha2-256':
$hash = 'sha256';
break;
//case 'ssh-rsa':
default:
$hash = 'sha1';
}
$hashObj = new Hash($hash);
switch ($this->signature_format) {
case 'rsa-sha2-512':
$h = pack('N5a*', 0x00305130, 0x0D060960, 0x86480165, 0x03040203, 0x05000440, $hashObj->hash($this->exchange_hash));
break;
case 'rsa-sha2-256':
$h = pack('N5a*', 0x00303130, 0x0D060960, 0x86480165, 0x03040201, 0x05000420, $hashObj->hash($this->exchange_hash));
break;
//case 'ssh-rsa':
default:
$hash = 'sha1';
$h = pack('N4a*', 0x00302130, 0x0906052B, 0x0E03021A, 0x05000414, $hashObj->hash($this->exchange_hash));
}
$h = chr(0x01) . str_repeat(chr(0xFF), $nLength - 2 - strlen($h)) . $h;
if ($s != $h) {
user_error('Bad server signature');
return $this->_disconnect(NET_SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE);
}
break;
default:
user_error('Unsupported signature format');
return $this->_disconnect(NET_SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE);
}
return $this->signature_format . ' ' . base64_encode($this->server_public_host_key);
}
/**
* Returns the exit status of an SSH command or false.
*
* @return false|int
* @access public
*/
function getExitStatus()
{
if (is_null($this->exit_status)) {
return false;
}
return $this->exit_status;
}
/**
* Returns the number of columns for the terminal window size.
*
* @return int
* @access public
*/
function getWindowColumns()
{
return $this->windowColumns;
}
/**
* Returns the number of rows for the terminal window size.
*
* @return int
* @access public
*/
function getWindowRows()
{
return $this->windowRows;
}
/**
* Sets the number of columns for the terminal window size.
*
* @param int $value
* @access public
*/
function setWindowColumns($value)
{
$this->windowColumns = $value;
}
/**
* Sets the number of rows for the terminal window size.
*
* @param int $value
* @access public
*/
function setWindowRows($value)
{
$this->windowRows = $value;
}
/**
* Sets the number of columns and rows for the terminal window size.
*
* @param int $columns
* @param int $rows
* @access public
*/
function setWindowSize($columns = 80, $rows = 24)
{
$this->windowColumns = $columns;
$this->windowRows = $rows;
}
/**
* Update packet types in log history
*
* @param string $old
* @param string $new
* @access private
*/
function _updateLogHistory($old, $new)
{
if (defined('NET_SSH2_LOGGING') && NET_SSH2_LOGGING == self::LOG_COMPLEX) {
$this->message_number_log[count($this->message_number_log) - 1] = str_replace(
$old,
$new,
$this->message_number_log[count($this->message_number_log) - 1]
);
}
}
/**
* Return the list of authentication methods that may productively continue authentication.
*
* @see https://tools.ietf.org/html/rfc4252#section-5.1
* @return array|null
*/
function getAuthMethodsToContinue()
{
return $this->auth_methods_to_continue;
}
/**
* Enables "smart" multi-factor authentication (MFA)
*/
function enableSmartMFA()
{
$this->smartMFA = true;
}
/**
* Disables "smart" multi-factor authentication (MFA)
*/
function disableSmartMFA()
{
$this->smartMFA = false;
}
}
PK ��$Z0�P�� �� % phpseclib/phpseclib/Crypt/Twofish.phpnu �[��� <?php
/**
* Pure-PHP implementation of Twofish.
*
* Uses mcrypt, if available, and an internal implementation, otherwise.
*
* PHP version 5
*
* Useful resources are as follows:
*
* - {@link http://en.wikipedia.org/wiki/Twofish Wikipedia description of Twofish}
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $twofish = new \phpseclib\Crypt\Twofish();
*
* $twofish->setKey('12345678901234567890123456789012');
*
* $plaintext = str_repeat('a', 1024);
*
* echo $twofish->decrypt($twofish->encrypt($plaintext));
* ?>
* </code>
*
* @category Crypt
* @package Twofish
* @author Jim Wigginton <terrafrost@php.net>
* @author Hans-Juergen Petrich <petrich@tronic-media.com>
* @copyright 2007 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt;
/**
* Pure-PHP implementation of Twofish.
*
* @package Twofish
* @author Jim Wigginton <terrafrost@php.net>
* @author Hans-Juergen Petrich <petrich@tronic-media.com>
* @access public
*/
class Twofish extends Base
{
/**
* The mcrypt specific name of the cipher
*
* @see \phpseclib\Crypt\Base::cipher_name_mcrypt
* @var string
* @access private
*/
var $cipher_name_mcrypt = 'twofish';
/**
* Optimizing value while CFB-encrypting
*
* @see \phpseclib\Crypt\Base::cfb_init_len
* @var int
* @access private
*/
var $cfb_init_len = 800;
/**
* Q-Table
*
* @var array
* @access private
*/
var $q0 = array(
0xA9, 0x67, 0xB3, 0xE8, 0x04, 0xFD, 0xA3, 0x76,
0x9A, 0x92, 0x80, 0x78, 0xE4, 0xDD, 0xD1, 0x38,
0x0D, 0xC6, 0x35, 0x98, 0x18, 0xF7, 0xEC, 0x6C,
0x43, 0x75, 0x37, 0x26, 0xFA, 0x13, 0x94, 0x48,
0xF2, 0xD0, 0x8B, 0x30, 0x84, 0x54, 0xDF, 0x23,
0x19, 0x5B, 0x3D, 0x59, 0xF3, 0xAE, 0xA2, 0x82,
0x63, 0x01, 0x83, 0x2E, 0xD9, 0x51, 0x9B, 0x7C,
0xA6, 0xEB, 0xA5, 0xBE, 0x16, 0x0C, 0xE3, 0x61,
0xC0, 0x8C, 0x3A, 0xF5, 0x73, 0x2C, 0x25, 0x0B,
0xBB, 0x4E, 0x89, 0x6B, 0x53, 0x6A, 0xB4, 0xF1,
0xE1, 0xE6, 0xBD, 0x45, 0xE2, 0xF4, 0xB6, 0x66,
0xCC, 0x95, 0x03, 0x56, 0xD4, 0x1C, 0x1E, 0xD7,
0xFB, 0xC3, 0x8E, 0xB5, 0xE9, 0xCF, 0xBF, 0xBA,
0xEA, 0x77, 0x39, 0xAF, 0x33, 0xC9, 0x62, 0x71,
0x81, 0x79, 0x09, 0xAD, 0x24, 0xCD, 0xF9, 0xD8,
0xE5, 0xC5, 0xB9, 0x4D, 0x44, 0x08, 0x86, 0xE7,
0xA1, 0x1D, 0xAA, 0xED, 0x06, 0x70, 0xB2, 0xD2,
0x41, 0x7B, 0xA0, 0x11, 0x31, 0xC2, 0x27, 0x90,
0x20, 0xF6, 0x60, 0xFF, 0x96, 0x5C, 0xB1, 0xAB,
0x9E, 0x9C, 0x52, 0x1B, 0x5F, 0x93, 0x0A, 0xEF,
0x91, 0x85, 0x49, 0xEE, 0x2D, 0x4F, 0x8F, 0x3B,
0x47, 0x87, 0x6D, 0x46, 0xD6, 0x3E, 0x69, 0x64,
0x2A, 0xCE, 0xCB, 0x2F, 0xFC, 0x97, 0x05, 0x7A,
0xAC, 0x7F, 0xD5, 0x1A, 0x4B, 0x0E, 0xA7, 0x5A,
0x28, 0x14, 0x3F, 0x29, 0x88, 0x3C, 0x4C, 0x02,
0xB8, 0xDA, 0xB0, 0x17, 0x55, 0x1F, 0x8A, 0x7D,
0x57, 0xC7, 0x8D, 0x74, 0xB7, 0xC4, 0x9F, 0x72,
0x7E, 0x15, 0x22, 0x12, 0x58, 0x07, 0x99, 0x34,
0x6E, 0x50, 0xDE, 0x68, 0x65, 0xBC, 0xDB, 0xF8,
0xC8, 0xA8, 0x2B, 0x40, 0xDC, 0xFE, 0x32, 0xA4,
0xCA, 0x10, 0x21, 0xF0, 0xD3, 0x5D, 0x0F, 0x00,
0x6F, 0x9D, 0x36, 0x42, 0x4A, 0x5E, 0xC1, 0xE0
);
/**
* Q-Table
*
* @var array
* @access private
*/
var $q1 = array(
0x75, 0xF3, 0xC6, 0xF4, 0xDB, 0x7B, 0xFB, 0xC8,
0x4A, 0xD3, 0xE6, 0x6B, 0x45, 0x7D, 0xE8, 0x4B,
0xD6, 0x32, 0xD8, 0xFD, 0x37, 0x71, 0xF1, 0xE1,
0x30, 0x0F, 0xF8, 0x1B, 0x87, 0xFA, 0x06, 0x3F,
0x5E, 0xBA, 0xAE, 0x5B, 0x8A, 0x00, 0xBC, 0x9D,
0x6D, 0xC1, 0xB1, 0x0E, 0x80, 0x5D, 0xD2, 0xD5,
0xA0, 0x84, 0x07, 0x14, 0xB5, 0x90, 0x2C, 0xA3,
0xB2, 0x73, 0x4C, 0x54, 0x92, 0x74, 0x36, 0x51,
0x38, 0xB0, 0xBD, 0x5A, 0xFC, 0x60, 0x62, 0x96,
0x6C, 0x42, 0xF7, 0x10, 0x7C, 0x28, 0x27, 0x8C,
0x13, 0x95, 0x9C, 0xC7, 0x24, 0x46, 0x3B, 0x70,
0xCA, 0xE3, 0x85, 0xCB, 0x11, 0xD0, 0x93, 0xB8,
0xA6, 0x83, 0x20, 0xFF, 0x9F, 0x77, 0xC3, 0xCC,
0x03, 0x6F, 0x08, 0xBF, 0x40, 0xE7, 0x2B, 0xE2,
0x79, 0x0C, 0xAA, 0x82, 0x41, 0x3A, 0xEA, 0xB9,
0xE4, 0x9A, 0xA4, 0x97, 0x7E, 0xDA, 0x7A, 0x17,
0x66, 0x94, 0xA1, 0x1D, 0x3D, 0xF0, 0xDE, 0xB3,
0x0B, 0x72, 0xA7, 0x1C, 0xEF, 0xD1, 0x53, 0x3E,
0x8F, 0x33, 0x26, 0x5F, 0xEC, 0x76, 0x2A, 0x49,
0x81, 0x88, 0xEE, 0x21, 0xC4, 0x1A, 0xEB, 0xD9,
0xC5, 0x39, 0x99, 0xCD, 0xAD, 0x31, 0x8B, 0x01,
0x18, 0x23, 0xDD, 0x1F, 0x4E, 0x2D, 0xF9, 0x48,
0x4F, 0xF2, 0x65, 0x8E, 0x78, 0x5C, 0x58, 0x19,
0x8D, 0xE5, 0x98, 0x57, 0x67, 0x7F, 0x05, 0x64,
0xAF, 0x63, 0xB6, 0xFE, 0xF5, 0xB7, 0x3C, 0xA5,
0xCE, 0xE9, 0x68, 0x44, 0xE0, 0x4D, 0x43, 0x69,
0x29, 0x2E, 0xAC, 0x15, 0x59, 0xA8, 0x0A, 0x9E,
0x6E, 0x47, 0xDF, 0x34, 0x35, 0x6A, 0xCF, 0xDC,
0x22, 0xC9, 0xC0, 0x9B, 0x89, 0xD4, 0xED, 0xAB,
0x12, 0xA2, 0x0D, 0x52, 0xBB, 0x02, 0x2F, 0xA9,
0xD7, 0x61, 0x1E, 0xB4, 0x50, 0x04, 0xF6, 0xC2,
0x16, 0x25, 0x86, 0x56, 0x55, 0x09, 0xBE, 0x91
);
/**
* M-Table
*
* @var array
* @access private
*/
var $m0 = array(
0xBCBC3275, 0xECEC21F3, 0x202043C6, 0xB3B3C9F4, 0xDADA03DB, 0x02028B7B, 0xE2E22BFB, 0x9E9EFAC8,
0xC9C9EC4A, 0xD4D409D3, 0x18186BE6, 0x1E1E9F6B, 0x98980E45, 0xB2B2387D, 0xA6A6D2E8, 0x2626B74B,
0x3C3C57D6, 0x93938A32, 0x8282EED8, 0x525298FD, 0x7B7BD437, 0xBBBB3771, 0x5B5B97F1, 0x474783E1,
0x24243C30, 0x5151E20F, 0xBABAC6F8, 0x4A4AF31B, 0xBFBF4887, 0x0D0D70FA, 0xB0B0B306, 0x7575DE3F,
0xD2D2FD5E, 0x7D7D20BA, 0x666631AE, 0x3A3AA35B, 0x59591C8A, 0x00000000, 0xCDCD93BC, 0x1A1AE09D,
0xAEAE2C6D, 0x7F7FABC1, 0x2B2BC7B1, 0xBEBEB90E, 0xE0E0A080, 0x8A8A105D, 0x3B3B52D2, 0x6464BAD5,
0xD8D888A0, 0xE7E7A584, 0x5F5FE807, 0x1B1B1114, 0x2C2CC2B5, 0xFCFCB490, 0x3131272C, 0x808065A3,
0x73732AB2, 0x0C0C8173, 0x79795F4C, 0x6B6B4154, 0x4B4B0292, 0x53536974, 0x94948F36, 0x83831F51,
0x2A2A3638, 0xC4C49CB0, 0x2222C8BD, 0xD5D5F85A, 0xBDBDC3FC, 0x48487860, 0xFFFFCE62, 0x4C4C0796,
0x4141776C, 0xC7C7E642, 0xEBEB24F7, 0x1C1C1410, 0x5D5D637C, 0x36362228, 0x6767C027, 0xE9E9AF8C,
0x4444F913, 0x1414EA95, 0xF5F5BB9C, 0xCFCF18C7, 0x3F3F2D24, 0xC0C0E346, 0x7272DB3B, 0x54546C70,
0x29294CCA, 0xF0F035E3, 0x0808FE85, 0xC6C617CB, 0xF3F34F11, 0x8C8CE4D0, 0xA4A45993, 0xCACA96B8,
0x68683BA6, 0xB8B84D83, 0x38382820, 0xE5E52EFF, 0xADAD569F, 0x0B0B8477, 0xC8C81DC3, 0x9999FFCC,
0x5858ED03, 0x19199A6F, 0x0E0E0A08, 0x95957EBF, 0x70705040, 0xF7F730E7, 0x6E6ECF2B, 0x1F1F6EE2,
0xB5B53D79, 0x09090F0C, 0x616134AA, 0x57571682, 0x9F9F0B41, 0x9D9D803A, 0x111164EA, 0x2525CDB9,
0xAFAFDDE4, 0x4545089A, 0xDFDF8DA4, 0xA3A35C97, 0xEAEAD57E, 0x353558DA, 0xEDEDD07A, 0x4343FC17,
0xF8F8CB66, 0xFBFBB194, 0x3737D3A1, 0xFAFA401D, 0xC2C2683D, 0xB4B4CCF0, 0x32325DDE, 0x9C9C71B3,
0x5656E70B, 0xE3E3DA72, 0x878760A7, 0x15151B1C, 0xF9F93AEF, 0x6363BFD1, 0x3434A953, 0x9A9A853E,
0xB1B1428F, 0x7C7CD133, 0x88889B26, 0x3D3DA65F, 0xA1A1D7EC, 0xE4E4DF76, 0x8181942A, 0x91910149,
0x0F0FFB81, 0xEEEEAA88, 0x161661EE, 0xD7D77321, 0x9797F5C4, 0xA5A5A81A, 0xFEFE3FEB, 0x6D6DB5D9,
0x7878AEC5, 0xC5C56D39, 0x1D1DE599, 0x7676A4CD, 0x3E3EDCAD, 0xCBCB6731, 0xB6B6478B, 0xEFEF5B01,
0x12121E18, 0x6060C523, 0x6A6AB0DD, 0x4D4DF61F, 0xCECEE94E, 0xDEDE7C2D, 0x55559DF9, 0x7E7E5A48,
0x2121B24F, 0x03037AF2, 0xA0A02665, 0x5E5E198E, 0x5A5A6678, 0x65654B5C, 0x62624E58, 0xFDFD4519,
0x0606F48D, 0x404086E5, 0xF2F2BE98, 0x3333AC57, 0x17179067, 0x05058E7F, 0xE8E85E05, 0x4F4F7D64,
0x89896AAF, 0x10109563, 0x74742FB6, 0x0A0A75FE, 0x5C5C92F5, 0x9B9B74B7, 0x2D2D333C, 0x3030D6A5,
0x2E2E49CE, 0x494989E9, 0x46467268, 0x77775544, 0xA8A8D8E0, 0x9696044D, 0x2828BD43, 0xA9A92969,
0xD9D97929, 0x8686912E, 0xD1D187AC, 0xF4F44A15, 0x8D8D1559, 0xD6D682A8, 0xB9B9BC0A, 0x42420D9E,
0xF6F6C16E, 0x2F2FB847, 0xDDDD06DF, 0x23233934, 0xCCCC6235, 0xF1F1C46A, 0xC1C112CF, 0x8585EBDC,
0x8F8F9E22, 0x7171A1C9, 0x9090F0C0, 0xAAAA539B, 0x0101F189, 0x8B8BE1D4, 0x4E4E8CED, 0x8E8E6FAB,
0xABABA212, 0x6F6F3EA2, 0xE6E6540D, 0xDBDBF252, 0x92927BBB, 0xB7B7B602, 0x6969CA2F, 0x3939D9A9,
0xD3D30CD7, 0xA7A72361, 0xA2A2AD1E, 0xC3C399B4, 0x6C6C4450, 0x07070504, 0x04047FF6, 0x272746C2,
0xACACA716, 0xD0D07625, 0x50501386, 0xDCDCF756, 0x84841A55, 0xE1E15109, 0x7A7A25BE, 0x1313EF91
);
/**
* M-Table
*
* @var array
* @access private
*/
var $m1 = array(
0xA9D93939, 0x67901717, 0xB3719C9C, 0xE8D2A6A6, 0x04050707, 0xFD985252, 0xA3658080, 0x76DFE4E4,
0x9A084545, 0x92024B4B, 0x80A0E0E0, 0x78665A5A, 0xE4DDAFAF, 0xDDB06A6A, 0xD1BF6363, 0x38362A2A,
0x0D54E6E6, 0xC6432020, 0x3562CCCC, 0x98BEF2F2, 0x181E1212, 0xF724EBEB, 0xECD7A1A1, 0x6C774141,
0x43BD2828, 0x7532BCBC, 0x37D47B7B, 0x269B8888, 0xFA700D0D, 0x13F94444, 0x94B1FBFB, 0x485A7E7E,
0xF27A0303, 0xD0E48C8C, 0x8B47B6B6, 0x303C2424, 0x84A5E7E7, 0x54416B6B, 0xDF06DDDD, 0x23C56060,
0x1945FDFD, 0x5BA33A3A, 0x3D68C2C2, 0x59158D8D, 0xF321ECEC, 0xAE316666, 0xA23E6F6F, 0x82165757,
0x63951010, 0x015BEFEF, 0x834DB8B8, 0x2E918686, 0xD9B56D6D, 0x511F8383, 0x9B53AAAA, 0x7C635D5D,
0xA63B6868, 0xEB3FFEFE, 0xA5D63030, 0xBE257A7A, 0x16A7ACAC, 0x0C0F0909, 0xE335F0F0, 0x6123A7A7,
0xC0F09090, 0x8CAFE9E9, 0x3A809D9D, 0xF5925C5C, 0x73810C0C, 0x2C273131, 0x2576D0D0, 0x0BE75656,
0xBB7B9292, 0x4EE9CECE, 0x89F10101, 0x6B9F1E1E, 0x53A93434, 0x6AC4F1F1, 0xB499C3C3, 0xF1975B5B,
0xE1834747, 0xE66B1818, 0xBDC82222, 0x450E9898, 0xE26E1F1F, 0xF4C9B3B3, 0xB62F7474, 0x66CBF8F8,
0xCCFF9999, 0x95EA1414, 0x03ED5858, 0x56F7DCDC, 0xD4E18B8B, 0x1C1B1515, 0x1EADA2A2, 0xD70CD3D3,
0xFB2BE2E2, 0xC31DC8C8, 0x8E195E5E, 0xB5C22C2C, 0xE9894949, 0xCF12C1C1, 0xBF7E9595, 0xBA207D7D,
0xEA641111, 0x77840B0B, 0x396DC5C5, 0xAF6A8989, 0x33D17C7C, 0xC9A17171, 0x62CEFFFF, 0x7137BBBB,
0x81FB0F0F, 0x793DB5B5, 0x0951E1E1, 0xADDC3E3E, 0x242D3F3F, 0xCDA47676, 0xF99D5555, 0xD8EE8282,
0xE5864040, 0xC5AE7878, 0xB9CD2525, 0x4D049696, 0x44557777, 0x080A0E0E, 0x86135050, 0xE730F7F7,
0xA1D33737, 0x1D40FAFA, 0xAA346161, 0xED8C4E4E, 0x06B3B0B0, 0x706C5454, 0xB22A7373, 0xD2523B3B,
0x410B9F9F, 0x7B8B0202, 0xA088D8D8, 0x114FF3F3, 0x3167CBCB, 0xC2462727, 0x27C06767, 0x90B4FCFC,
0x20283838, 0xF67F0404, 0x60784848, 0xFF2EE5E5, 0x96074C4C, 0x5C4B6565, 0xB1C72B2B, 0xAB6F8E8E,
0x9E0D4242, 0x9CBBF5F5, 0x52F2DBDB, 0x1BF34A4A, 0x5FA63D3D, 0x9359A4A4, 0x0ABCB9B9, 0xEF3AF9F9,
0x91EF1313, 0x85FE0808, 0x49019191, 0xEE611616, 0x2D7CDEDE, 0x4FB22121, 0x8F42B1B1, 0x3BDB7272,
0x47B82F2F, 0x8748BFBF, 0x6D2CAEAE, 0x46E3C0C0, 0xD6573C3C, 0x3E859A9A, 0x6929A9A9, 0x647D4F4F,
0x2A948181, 0xCE492E2E, 0xCB17C6C6, 0x2FCA6969, 0xFCC3BDBD, 0x975CA3A3, 0x055EE8E8, 0x7AD0EDED,
0xAC87D1D1, 0x7F8E0505, 0xD5BA6464, 0x1AA8A5A5, 0x4BB72626, 0x0EB9BEBE, 0xA7608787, 0x5AF8D5D5,
0x28223636, 0x14111B1B, 0x3FDE7575, 0x2979D9D9, 0x88AAEEEE, 0x3C332D2D, 0x4C5F7979, 0x02B6B7B7,
0xB896CACA, 0xDA583535, 0xB09CC4C4, 0x17FC4343, 0x551A8484, 0x1FF64D4D, 0x8A1C5959, 0x7D38B2B2,
0x57AC3333, 0xC718CFCF, 0x8DF40606, 0x74695353, 0xB7749B9B, 0xC4F59797, 0x9F56ADAD, 0x72DAE3E3,
0x7ED5EAEA, 0x154AF4F4, 0x229E8F8F, 0x12A2ABAB, 0x584E6262, 0x07E85F5F, 0x99E51D1D, 0x34392323,
0x6EC1F6F6, 0x50446C6C, 0xDE5D3232, 0x68724646, 0x6526A0A0, 0xBC93CDCD, 0xDB03DADA, 0xF8C6BABA,
0xC8FA9E9E, 0xA882D6D6, 0x2BCF6E6E, 0x40507070, 0xDCEB8585, 0xFE750A0A, 0x328A9393, 0xA48DDFDF,
0xCA4C2929, 0x10141C1C, 0x2173D7D7, 0xF0CCB4B4, 0xD309D4D4, 0x5D108A8A, 0x0FE25151, 0x00000000,
0x6F9A1919, 0x9DE01A1A, 0x368F9494, 0x42E6C7C7, 0x4AECC9C9, 0x5EFDD2D2, 0xC1AB7F7F, 0xE0D8A8A8
);
/**
* M-Table
*
* @var array
* @access private
*/
var $m2 = array(
0xBC75BC32, 0xECF3EC21, 0x20C62043, 0xB3F4B3C9, 0xDADBDA03, 0x027B028B, 0xE2FBE22B, 0x9EC89EFA,
0xC94AC9EC, 0xD4D3D409, 0x18E6186B, 0x1E6B1E9F, 0x9845980E, 0xB27DB238, 0xA6E8A6D2, 0x264B26B7,
0x3CD63C57, 0x9332938A, 0x82D882EE, 0x52FD5298, 0x7B377BD4, 0xBB71BB37, 0x5BF15B97, 0x47E14783,
0x2430243C, 0x510F51E2, 0xBAF8BAC6, 0x4A1B4AF3, 0xBF87BF48, 0x0DFA0D70, 0xB006B0B3, 0x753F75DE,
0xD25ED2FD, 0x7DBA7D20, 0x66AE6631, 0x3A5B3AA3, 0x598A591C, 0x00000000, 0xCDBCCD93, 0x1A9D1AE0,
0xAE6DAE2C, 0x7FC17FAB, 0x2BB12BC7, 0xBE0EBEB9, 0xE080E0A0, 0x8A5D8A10, 0x3BD23B52, 0x64D564BA,
0xD8A0D888, 0xE784E7A5, 0x5F075FE8, 0x1B141B11, 0x2CB52CC2, 0xFC90FCB4, 0x312C3127, 0x80A38065,
0x73B2732A, 0x0C730C81, 0x794C795F, 0x6B546B41, 0x4B924B02, 0x53745369, 0x9436948F, 0x8351831F,
0x2A382A36, 0xC4B0C49C, 0x22BD22C8, 0xD55AD5F8, 0xBDFCBDC3, 0x48604878, 0xFF62FFCE, 0x4C964C07,
0x416C4177, 0xC742C7E6, 0xEBF7EB24, 0x1C101C14, 0x5D7C5D63, 0x36283622, 0x672767C0, 0xE98CE9AF,
0x441344F9, 0x149514EA, 0xF59CF5BB, 0xCFC7CF18, 0x3F243F2D, 0xC046C0E3, 0x723B72DB, 0x5470546C,
0x29CA294C, 0xF0E3F035, 0x088508FE, 0xC6CBC617, 0xF311F34F, 0x8CD08CE4, 0xA493A459, 0xCAB8CA96,
0x68A6683B, 0xB883B84D, 0x38203828, 0xE5FFE52E, 0xAD9FAD56, 0x0B770B84, 0xC8C3C81D, 0x99CC99FF,
0x580358ED, 0x196F199A, 0x0E080E0A, 0x95BF957E, 0x70407050, 0xF7E7F730, 0x6E2B6ECF, 0x1FE21F6E,
0xB579B53D, 0x090C090F, 0x61AA6134, 0x57825716, 0x9F419F0B, 0x9D3A9D80, 0x11EA1164, 0x25B925CD,
0xAFE4AFDD, 0x459A4508, 0xDFA4DF8D, 0xA397A35C, 0xEA7EEAD5, 0x35DA3558, 0xED7AEDD0, 0x431743FC,
0xF866F8CB, 0xFB94FBB1, 0x37A137D3, 0xFA1DFA40, 0xC23DC268, 0xB4F0B4CC, 0x32DE325D, 0x9CB39C71,
0x560B56E7, 0xE372E3DA, 0x87A78760, 0x151C151B, 0xF9EFF93A, 0x63D163BF, 0x345334A9, 0x9A3E9A85,
0xB18FB142, 0x7C337CD1, 0x8826889B, 0x3D5F3DA6, 0xA1ECA1D7, 0xE476E4DF, 0x812A8194, 0x91499101,
0x0F810FFB, 0xEE88EEAA, 0x16EE1661, 0xD721D773, 0x97C497F5, 0xA51AA5A8, 0xFEEBFE3F, 0x6DD96DB5,
0x78C578AE, 0xC539C56D, 0x1D991DE5, 0x76CD76A4, 0x3EAD3EDC, 0xCB31CB67, 0xB68BB647, 0xEF01EF5B,
0x1218121E, 0x602360C5, 0x6ADD6AB0, 0x4D1F4DF6, 0xCE4ECEE9, 0xDE2DDE7C, 0x55F9559D, 0x7E487E5A,
0x214F21B2, 0x03F2037A, 0xA065A026, 0x5E8E5E19, 0x5A785A66, 0x655C654B, 0x6258624E, 0xFD19FD45,
0x068D06F4, 0x40E54086, 0xF298F2BE, 0x335733AC, 0x17671790, 0x057F058E, 0xE805E85E, 0x4F644F7D,
0x89AF896A, 0x10631095, 0x74B6742F, 0x0AFE0A75, 0x5CF55C92, 0x9BB79B74, 0x2D3C2D33, 0x30A530D6,
0x2ECE2E49, 0x49E94989, 0x46684672, 0x77447755, 0xA8E0A8D8, 0x964D9604, 0x284328BD, 0xA969A929,
0xD929D979, 0x862E8691, 0xD1ACD187, 0xF415F44A, 0x8D598D15, 0xD6A8D682, 0xB90AB9BC, 0x429E420D,
0xF66EF6C1, 0x2F472FB8, 0xDDDFDD06, 0x23342339, 0xCC35CC62, 0xF16AF1C4, 0xC1CFC112, 0x85DC85EB,
0x8F228F9E, 0x71C971A1, 0x90C090F0, 0xAA9BAA53, 0x018901F1, 0x8BD48BE1, 0x4EED4E8C, 0x8EAB8E6F,
0xAB12ABA2, 0x6FA26F3E, 0xE60DE654, 0xDB52DBF2, 0x92BB927B, 0xB702B7B6, 0x692F69CA, 0x39A939D9,
0xD3D7D30C, 0xA761A723, 0xA21EA2AD, 0xC3B4C399, 0x6C506C44, 0x07040705, 0x04F6047F, 0x27C22746,
0xAC16ACA7, 0xD025D076, 0x50865013, 0xDC56DCF7, 0x8455841A, 0xE109E151, 0x7ABE7A25, 0x139113EF
);
/**
* M-Table
*
* @var array
* @access private
*/
var $m3 = array(
0xD939A9D9, 0x90176790, 0x719CB371, 0xD2A6E8D2, 0x05070405, 0x9852FD98, 0x6580A365, 0xDFE476DF,
0x08459A08, 0x024B9202, 0xA0E080A0, 0x665A7866, 0xDDAFE4DD, 0xB06ADDB0, 0xBF63D1BF, 0x362A3836,
0x54E60D54, 0x4320C643, 0x62CC3562, 0xBEF298BE, 0x1E12181E, 0x24EBF724, 0xD7A1ECD7, 0x77416C77,
0xBD2843BD, 0x32BC7532, 0xD47B37D4, 0x9B88269B, 0x700DFA70, 0xF94413F9, 0xB1FB94B1, 0x5A7E485A,
0x7A03F27A, 0xE48CD0E4, 0x47B68B47, 0x3C24303C, 0xA5E784A5, 0x416B5441, 0x06DDDF06, 0xC56023C5,
0x45FD1945, 0xA33A5BA3, 0x68C23D68, 0x158D5915, 0x21ECF321, 0x3166AE31, 0x3E6FA23E, 0x16578216,
0x95106395, 0x5BEF015B, 0x4DB8834D, 0x91862E91, 0xB56DD9B5, 0x1F83511F, 0x53AA9B53, 0x635D7C63,
0x3B68A63B, 0x3FFEEB3F, 0xD630A5D6, 0x257ABE25, 0xA7AC16A7, 0x0F090C0F, 0x35F0E335, 0x23A76123,
0xF090C0F0, 0xAFE98CAF, 0x809D3A80, 0x925CF592, 0x810C7381, 0x27312C27, 0x76D02576, 0xE7560BE7,
0x7B92BB7B, 0xE9CE4EE9, 0xF10189F1, 0x9F1E6B9F, 0xA93453A9, 0xC4F16AC4, 0x99C3B499, 0x975BF197,
0x8347E183, 0x6B18E66B, 0xC822BDC8, 0x0E98450E, 0x6E1FE26E, 0xC9B3F4C9, 0x2F74B62F, 0xCBF866CB,
0xFF99CCFF, 0xEA1495EA, 0xED5803ED, 0xF7DC56F7, 0xE18BD4E1, 0x1B151C1B, 0xADA21EAD, 0x0CD3D70C,
0x2BE2FB2B, 0x1DC8C31D, 0x195E8E19, 0xC22CB5C2, 0x8949E989, 0x12C1CF12, 0x7E95BF7E, 0x207DBA20,
0x6411EA64, 0x840B7784, 0x6DC5396D, 0x6A89AF6A, 0xD17C33D1, 0xA171C9A1, 0xCEFF62CE, 0x37BB7137,
0xFB0F81FB, 0x3DB5793D, 0x51E10951, 0xDC3EADDC, 0x2D3F242D, 0xA476CDA4, 0x9D55F99D, 0xEE82D8EE,
0x8640E586, 0xAE78C5AE, 0xCD25B9CD, 0x04964D04, 0x55774455, 0x0A0E080A, 0x13508613, 0x30F7E730,
0xD337A1D3, 0x40FA1D40, 0x3461AA34, 0x8C4EED8C, 0xB3B006B3, 0x6C54706C, 0x2A73B22A, 0x523BD252,
0x0B9F410B, 0x8B027B8B, 0x88D8A088, 0x4FF3114F, 0x67CB3167, 0x4627C246, 0xC06727C0, 0xB4FC90B4,
0x28382028, 0x7F04F67F, 0x78486078, 0x2EE5FF2E, 0x074C9607, 0x4B655C4B, 0xC72BB1C7, 0x6F8EAB6F,
0x0D429E0D, 0xBBF59CBB, 0xF2DB52F2, 0xF34A1BF3, 0xA63D5FA6, 0x59A49359, 0xBCB90ABC, 0x3AF9EF3A,
0xEF1391EF, 0xFE0885FE, 0x01914901, 0x6116EE61, 0x7CDE2D7C, 0xB2214FB2, 0x42B18F42, 0xDB723BDB,
0xB82F47B8, 0x48BF8748, 0x2CAE6D2C, 0xE3C046E3, 0x573CD657, 0x859A3E85, 0x29A96929, 0x7D4F647D,
0x94812A94, 0x492ECE49, 0x17C6CB17, 0xCA692FCA, 0xC3BDFCC3, 0x5CA3975C, 0x5EE8055E, 0xD0ED7AD0,
0x87D1AC87, 0x8E057F8E, 0xBA64D5BA, 0xA8A51AA8, 0xB7264BB7, 0xB9BE0EB9, 0x6087A760, 0xF8D55AF8,
0x22362822, 0x111B1411, 0xDE753FDE, 0x79D92979, 0xAAEE88AA, 0x332D3C33, 0x5F794C5F, 0xB6B702B6,
0x96CAB896, 0x5835DA58, 0x9CC4B09C, 0xFC4317FC, 0x1A84551A, 0xF64D1FF6, 0x1C598A1C, 0x38B27D38,
0xAC3357AC, 0x18CFC718, 0xF4068DF4, 0x69537469, 0x749BB774, 0xF597C4F5, 0x56AD9F56, 0xDAE372DA,
0xD5EA7ED5, 0x4AF4154A, 0x9E8F229E, 0xA2AB12A2, 0x4E62584E, 0xE85F07E8, 0xE51D99E5, 0x39233439,
0xC1F66EC1, 0x446C5044, 0x5D32DE5D, 0x72466872, 0x26A06526, 0x93CDBC93, 0x03DADB03, 0xC6BAF8C6,
0xFA9EC8FA, 0x82D6A882, 0xCF6E2BCF, 0x50704050, 0xEB85DCEB, 0x750AFE75, 0x8A93328A, 0x8DDFA48D,
0x4C29CA4C, 0x141C1014, 0x73D72173, 0xCCB4F0CC, 0x09D4D309, 0x108A5D10, 0xE2510FE2, 0x00000000,
0x9A196F9A, 0xE01A9DE0, 0x8F94368F, 0xE6C742E6, 0xECC94AEC, 0xFDD25EFD, 0xAB7FC1AB, 0xD8A8E0D8
);
/**
* The Key Schedule Array
*
* @var array
* @access private
*/
var $K = array();
/**
* The Key depended S-Table 0
*
* @var array
* @access private
*/
var $S0 = array();
/**
* The Key depended S-Table 1
*
* @var array
* @access private
*/
var $S1 = array();
/**
* The Key depended S-Table 2
*
* @var array
* @access private
*/
var $S2 = array();
/**
* The Key depended S-Table 3
*
* @var array
* @access private
*/
var $S3 = array();
/**
* Holds the last used key
*
* @var array
* @access private
*/
var $kl;
/**
* The Key Length (in bytes)
*
* @see Crypt_Twofish::setKeyLength()
* @var int
* @access private
*/
var $key_length = 16;
/**
* Default Constructor.
*
* Determines whether or not the mcrypt extension should be used.
*
* $mode could be:
*
* - CRYPT_MODE_ECB
*
* - CRYPT_MODE_CBC
*
* - CRYPT_MODE_CTR
*
* - CRYPT_MODE_CFB
*
* - CRYPT_MODE_OFB
*
* (or the alias constants of the chosen cipher, for example for AES: CRYPT_AES_MODE_ECB or CRYPT_AES_MODE_CBC ...)
*
* If not explicitly set, CRYPT_MODE_CBC will be used.
*
* @param int $mode
* @access public
*/
function __construct($mode = self::MODE_CBC)
{
parent::__construct($mode);
$this->m0 = array_map('intval', $this->m0);
$this->m1 = array_map('intval', $this->m1);
$this->m2 = array_map('intval', $this->m2);
$this->m3 = array_map('intval', $this->m3);
$this->q0 = array_map('intval', $this->q0);
$this->q1 = array_map('intval', $this->q1);
}
/**
* Sets the key length.
*
* Valid key lengths are 128, 192 or 256 bits
*
* @access public
* @param int $length
*/
function setKeyLength($length)
{
switch (true) {
case $length <= 128:
$this->key_length = 16;
break;
case $length <= 192:
$this->key_length = 24;
break;
default:
$this->key_length = 32;
}
parent::setKeyLength($length);
}
/**
* Setup the key (expansion)
*
* @see \phpseclib\Crypt\Base::_setupKey()
* @access private
*/
function _setupKey()
{
if (isset($this->kl['key']) && $this->key === $this->kl['key']) {
// already expanded
return;
}
$this->kl = array('key' => $this->key);
/* Key expanding and generating the key-depended s-boxes */
$le_longs = unpack('V*', $this->key);
$key = unpack('C*', $this->key);
$m0 = $this->m0;
$m1 = $this->m1;
$m2 = $this->m2;
$m3 = $this->m3;
$q0 = $this->q0;
$q1 = $this->q1;
$K = $S0 = $S1 = $S2 = $S3 = array();
switch (strlen($this->key)) {
case 16:
list($s7, $s6, $s5, $s4) = $this->_mdsrem($le_longs[1], $le_longs[2]);
list($s3, $s2, $s1, $s0) = $this->_mdsrem($le_longs[3], $le_longs[4]);
for ($i = 0, $j = 1; $i < 40; $i+= 2, $j+= 2) {
$A = $m0[$q0[$q0[$i] ^ $key[ 9]] ^ $key[1]] ^
$m1[$q0[$q1[$i] ^ $key[10]] ^ $key[2]] ^
$m2[$q1[$q0[$i] ^ $key[11]] ^ $key[3]] ^
$m3[$q1[$q1[$i] ^ $key[12]] ^ $key[4]];
$B = $m0[$q0[$q0[$j] ^ $key[13]] ^ $key[5]] ^
$m1[$q0[$q1[$j] ^ $key[14]] ^ $key[6]] ^
$m2[$q1[$q0[$j] ^ $key[15]] ^ $key[7]] ^
$m3[$q1[$q1[$j] ^ $key[16]] ^ $key[8]];
$B = ($B << 8) | ($B >> 24 & 0xff);
$A = $this->safe_intval($A + $B);
$K[] = $A;
$A = $this->safe_intval($A + $B);
$K[] = ($A << 9 | $A >> 23 & 0x1ff);
}
for ($i = 0; $i < 256; ++$i) {
$S0[$i] = $m0[$q0[$q0[$i] ^ $s4] ^ $s0];
$S1[$i] = $m1[$q0[$q1[$i] ^ $s5] ^ $s1];
$S2[$i] = $m2[$q1[$q0[$i] ^ $s6] ^ $s2];
$S3[$i] = $m3[$q1[$q1[$i] ^ $s7] ^ $s3];
}
break;
case 24:
list($sb, $sa, $s9, $s8) = $this->_mdsrem($le_longs[1], $le_longs[2]);
list($s7, $s6, $s5, $s4) = $this->_mdsrem($le_longs[3], $le_longs[4]);
list($s3, $s2, $s1, $s0) = $this->_mdsrem($le_longs[5], $le_longs[6]);
for ($i = 0, $j = 1; $i < 40; $i+= 2, $j+= 2) {
$A = $m0[$q0[$q0[$q1[$i] ^ $key[17]] ^ $key[ 9]] ^ $key[1]] ^
$m1[$q0[$q1[$q1[$i] ^ $key[18]] ^ $key[10]] ^ $key[2]] ^
$m2[$q1[$q0[$q0[$i] ^ $key[19]] ^ $key[11]] ^ $key[3]] ^
$m3[$q1[$q1[$q0[$i] ^ $key[20]] ^ $key[12]] ^ $key[4]];
$B = $m0[$q0[$q0[$q1[$j] ^ $key[21]] ^ $key[13]] ^ $key[5]] ^
$m1[$q0[$q1[$q1[$j] ^ $key[22]] ^ $key[14]] ^ $key[6]] ^
$m2[$q1[$q0[$q0[$j] ^ $key[23]] ^ $key[15]] ^ $key[7]] ^
$m3[$q1[$q1[$q0[$j] ^ $key[24]] ^ $key[16]] ^ $key[8]];
$B = ($B << 8) | ($B >> 24 & 0xff);
$A = $this->safe_intval($A + $B);
$K[] = $A;
$A = $this->safe_intval($A + $B);
$K[] = ($A << 9 | $A >> 23 & 0x1ff);
}
for ($i = 0; $i < 256; ++$i) {
$S0[$i] = $m0[$q0[$q0[$q1[$i] ^ $s8] ^ $s4] ^ $s0];
$S1[$i] = $m1[$q0[$q1[$q1[$i] ^ $s9] ^ $s5] ^ $s1];
$S2[$i] = $m2[$q1[$q0[$q0[$i] ^ $sa] ^ $s6] ^ $s2];
$S3[$i] = $m3[$q1[$q1[$q0[$i] ^ $sb] ^ $s7] ^ $s3];
}
break;
default: // 32
list($sf, $se, $sd, $sc) = $this->_mdsrem($le_longs[1], $le_longs[2]);
list($sb, $sa, $s9, $s8) = $this->_mdsrem($le_longs[3], $le_longs[4]);
list($s7, $s6, $s5, $s4) = $this->_mdsrem($le_longs[5], $le_longs[6]);
list($s3, $s2, $s1, $s0) = $this->_mdsrem($le_longs[7], $le_longs[8]);
for ($i = 0, $j = 1; $i < 40; $i+= 2, $j+= 2) {
$A = $m0[$q0[$q0[$q1[$q1[$i] ^ $key[25]] ^ $key[17]] ^ $key[ 9]] ^ $key[1]] ^
$m1[$q0[$q1[$q1[$q0[$i] ^ $key[26]] ^ $key[18]] ^ $key[10]] ^ $key[2]] ^
$m2[$q1[$q0[$q0[$q0[$i] ^ $key[27]] ^ $key[19]] ^ $key[11]] ^ $key[3]] ^
$m3[$q1[$q1[$q0[$q1[$i] ^ $key[28]] ^ $key[20]] ^ $key[12]] ^ $key[4]];
$B = $m0[$q0[$q0[$q1[$q1[$j] ^ $key[29]] ^ $key[21]] ^ $key[13]] ^ $key[5]] ^
$m1[$q0[$q1[$q1[$q0[$j] ^ $key[30]] ^ $key[22]] ^ $key[14]] ^ $key[6]] ^
$m2[$q1[$q0[$q0[$q0[$j] ^ $key[31]] ^ $key[23]] ^ $key[15]] ^ $key[7]] ^
$m3[$q1[$q1[$q0[$q1[$j] ^ $key[32]] ^ $key[24]] ^ $key[16]] ^ $key[8]];
$B = ($B << 8) | ($B >> 24 & 0xff);
$A = $this->safe_intval($A + $B);
$K[] = $A;
$A = $this->safe_intval($A + $B);
$K[] = ($A << 9 | $A >> 23 & 0x1ff);
}
for ($i = 0; $i < 256; ++$i) {
$S0[$i] = $m0[$q0[$q0[$q1[$q1[$i] ^ $sc] ^ $s8] ^ $s4] ^ $s0];
$S1[$i] = $m1[$q0[$q1[$q1[$q0[$i] ^ $sd] ^ $s9] ^ $s5] ^ $s1];
$S2[$i] = $m2[$q1[$q0[$q0[$q0[$i] ^ $se] ^ $sa] ^ $s6] ^ $s2];
$S3[$i] = $m3[$q1[$q1[$q0[$q1[$i] ^ $sf] ^ $sb] ^ $s7] ^ $s3];
}
}
$this->K = $K;
$this->S0 = $S0;
$this->S1 = $S1;
$this->S2 = $S2;
$this->S3 = $S3;
}
/**
* _mdsrem function using by the twofish cipher algorithm
*
* @access private
* @param string $A
* @param string $B
* @return array
*/
function _mdsrem($A, $B)
{
// No gain by unrolling this loop.
for ($i = 0; $i < 8; ++$i) {
// Get most significant coefficient.
$t = 0xff & ($B >> 24);
// Shift the others up.
$B = ($B << 8) | (0xff & ($A >> 24));
$A<<= 8;
$u = $t << 1;
// Subtract the modular polynomial on overflow.
if ($t & 0x80) {
$u^= 0x14d;
}
// Remove t * (a * x^2 + 1).
$B ^= $t ^ ($u << 16);
// Form u = a*t + t/a = t*(a + 1/a).
$u^= 0x7fffffff & ($t >> 1);
// Add the modular polynomial on underflow.
if ($t & 0x01) {
$u^= 0xa6 ;
}
// Remove t * (a + 1/a) * (x^3 + x).
$B^= ($u << 24) | ($u << 8);
}
return array(
0xff & $B >> 24,
0xff & $B >> 16,
0xff & $B >> 8,
0xff & $B);
}
/**
* Encrypts a block
*
* @access private
* @param string $in
* @return string
*/
function _encryptBlock($in)
{
$S0 = $this->S0;
$S1 = $this->S1;
$S2 = $this->S2;
$S3 = $this->S3;
$K = $this->K;
$in = unpack("V4", $in);
$R0 = $K[0] ^ $in[1];
$R1 = $K[1] ^ $in[2];
$R2 = $K[2] ^ $in[3];
$R3 = $K[3] ^ $in[4];
$ki = 7;
while ($ki < 39) {
$t0 = $S0[ $R0 & 0xff] ^
$S1[($R0 >> 8) & 0xff] ^
$S2[($R0 >> 16) & 0xff] ^
$S3[($R0 >> 24) & 0xff];
$t1 = $S0[($R1 >> 24) & 0xff] ^
$S1[ $R1 & 0xff] ^
$S2[($R1 >> 8) & 0xff] ^
$S3[($R1 >> 16) & 0xff];
$R2^= $this->safe_intval($t0 + $t1 + $K[++$ki]);
$R2 = ($R2 >> 1 & 0x7fffffff) | ($R2 << 31);
$R3 = ((($R3 >> 31) & 1) | ($R3 << 1)) ^ $this->safe_intval($t0 + ($t1 << 1) + $K[++$ki]);
$t0 = $S0[ $R2 & 0xff] ^
$S1[($R2 >> 8) & 0xff] ^
$S2[($R2 >> 16) & 0xff] ^
$S3[($R2 >> 24) & 0xff];
$t1 = $S0[($R3 >> 24) & 0xff] ^
$S1[ $R3 & 0xff] ^
$S2[($R3 >> 8) & 0xff] ^
$S3[($R3 >> 16) & 0xff];
$R0^= $this->safe_intval($t0 + $t1 + $K[++$ki]);
$R0 = ($R0 >> 1 & 0x7fffffff) | ($R0 << 31);
$R1 = ((($R1 >> 31) & 1) | ($R1 << 1)) ^ $this->safe_intval($t0 + ($t1 << 1) + $K[++$ki]);
}
// @codingStandardsIgnoreStart
return pack("V4", $K[4] ^ $R2,
$K[5] ^ $R3,
$K[6] ^ $R0,
$K[7] ^ $R1);
// @codingStandardsIgnoreEnd
}
/**
* Decrypts a block
*
* @access private
* @param string $in
* @return string
*/
function _decryptBlock($in)
{
$S0 = $this->S0;
$S1 = $this->S1;
$S2 = $this->S2;
$S3 = $this->S3;
$K = $this->K;
$in = unpack("V4", $in);
$R0 = $K[4] ^ $in[1];
$R1 = $K[5] ^ $in[2];
$R2 = $K[6] ^ $in[3];
$R3 = $K[7] ^ $in[4];
$ki = 40;
while ($ki > 8) {
$t0 = $S0[$R0 & 0xff] ^
$S1[$R0 >> 8 & 0xff] ^
$S2[$R0 >> 16 & 0xff] ^
$S3[$R0 >> 24 & 0xff];
$t1 = $S0[$R1 >> 24 & 0xff] ^
$S1[$R1 & 0xff] ^
$S2[$R1 >> 8 & 0xff] ^
$S3[$R1 >> 16 & 0xff];
$R3^= $this->safe_intval($t0 + ($t1 << 1) + $K[--$ki]);
$R3 = $R3 >> 1 & 0x7fffffff | $R3 << 31;
$R2 = ($R2 >> 31 & 0x1 | $R2 << 1) ^ $this->safe_intval($t0 + $t1 + $K[--$ki]);
$t0 = $S0[$R2 & 0xff] ^
$S1[$R2 >> 8 & 0xff] ^
$S2[$R2 >> 16 & 0xff] ^
$S3[$R2 >> 24 & 0xff];
$t1 = $S0[$R3 >> 24 & 0xff] ^
$S1[$R3 & 0xff] ^
$S2[$R3 >> 8 & 0xff] ^
$S3[$R3 >> 16 & 0xff];
$R1^= $this->safe_intval($t0 + ($t1 << 1) + $K[--$ki]);
$R1 = $R1 >> 1 & 0x7fffffff | $R1 << 31;
$R0 = ($R0 >> 31 & 0x1 | $R0 << 1) ^ $this->safe_intval($t0 + $t1 + $K[--$ki]);
}
// @codingStandardsIgnoreStart
return pack("V4", $K[0] ^ $R2,
$K[1] ^ $R3,
$K[2] ^ $R0,
$K[3] ^ $R1);
// @codingStandardsIgnoreEnd
}
/**
* Setup the performance-optimized function for de/encrypt()
*
* @see \phpseclib\Crypt\Base::_setupInlineCrypt()
* @access private
*/
function _setupInlineCrypt()
{
$lambda_functions =& self::_getLambdaFunctions();
// Max. 10 Ultra-Hi-optimized inline-crypt functions. After that, we'll (still) create very fast code, but not the ultimate fast one.
// (Currently, for Crypt_Twofish, one generated $lambda_function cost on php5.5@32bit ~140kb unfreeable mem and ~240kb on php5.5@64bit)
$gen_hi_opt_code = (bool)(count($lambda_functions) < 10);
// Generation of a unique hash for our generated code
$code_hash = "Crypt_Twofish, {$this->mode}";
if ($gen_hi_opt_code) {
$code_hash = str_pad($code_hash, 32) . $this->_hashInlineCryptFunction($this->key);
}
$safeint = $this->safe_intval_inline();
if (!isset($lambda_functions[$code_hash])) {
switch (true) {
case $gen_hi_opt_code:
$K = $this->K;
$init_crypt = '
static $S0, $S1, $S2, $S3;
if (!$S0) {
for ($i = 0; $i < 256; ++$i) {
$S0[] = (int)$self->S0[$i];
$S1[] = (int)$self->S1[$i];
$S2[] = (int)$self->S2[$i];
$S3[] = (int)$self->S3[$i];
}
}
';
break;
default:
$K = array();
for ($i = 0; $i < 40; ++$i) {
$K[] = '$K_' . $i;
}
$init_crypt = '
$S0 = $self->S0;
$S1 = $self->S1;
$S2 = $self->S2;
$S3 = $self->S3;
list(' . implode(',', $K) . ') = $self->K;
';
}
// Generating encrypt code:
$encrypt_block = '
$in = unpack("V4", $in);
$R0 = '.$K[0].' ^ $in[1];
$R1 = '.$K[1].' ^ $in[2];
$R2 = '.$K[2].' ^ $in[3];
$R3 = '.$K[3].' ^ $in[4];
';
for ($ki = 7, $i = 0; $i < 8; ++$i) {
$encrypt_block.= '
$t0 = $S0[ $R0 & 0xff] ^
$S1[($R0 >> 8) & 0xff] ^
$S2[($R0 >> 16) & 0xff] ^
$S3[($R0 >> 24) & 0xff];
$t1 = $S0[($R1 >> 24) & 0xff] ^
$S1[ $R1 & 0xff] ^
$S2[($R1 >> 8) & 0xff] ^
$S3[($R1 >> 16) & 0xff];
$R2^= ' . sprintf($safeint, '$t0 + $t1 + ' . $K[++$ki]) . ';
$R2 = ($R2 >> 1 & 0x7fffffff) | ($R2 << 31);
$R3 = ((($R3 >> 31) & 1) | ($R3 << 1)) ^ ' . sprintf($safeint, '($t0 + ($t1 << 1) + ' . $K[++$ki] . ')') . ';
$t0 = $S0[ $R2 & 0xff] ^
$S1[($R2 >> 8) & 0xff] ^
$S2[($R2 >> 16) & 0xff] ^
$S3[($R2 >> 24) & 0xff];
$t1 = $S0[($R3 >> 24) & 0xff] ^
$S1[ $R3 & 0xff] ^
$S2[($R3 >> 8) & 0xff] ^
$S3[($R3 >> 16) & 0xff];
$R0^= ' . sprintf($safeint, '($t0 + $t1 + ' . $K[++$ki] . ')') . ';
$R0 = ($R0 >> 1 & 0x7fffffff) | ($R0 << 31);
$R1 = ((($R1 >> 31) & 1) | ($R1 << 1)) ^ ' . sprintf($safeint, '($t0 + ($t1 << 1) + ' . $K[++$ki] . ')') . ';
';
}
$encrypt_block.= '
$in = pack("V4", ' . $K[4] . ' ^ $R2,
' . $K[5] . ' ^ $R3,
' . $K[6] . ' ^ $R0,
' . $K[7] . ' ^ $R1);
';
// Generating decrypt code:
$decrypt_block = '
$in = unpack("V4", $in);
$R0 = '.$K[4].' ^ $in[1];
$R1 = '.$K[5].' ^ $in[2];
$R2 = '.$K[6].' ^ $in[3];
$R3 = '.$K[7].' ^ $in[4];
';
for ($ki = 40, $i = 0; $i < 8; ++$i) {
$decrypt_block.= '
$t0 = $S0[$R0 & 0xff] ^
$S1[$R0 >> 8 & 0xff] ^
$S2[$R0 >> 16 & 0xff] ^
$S3[$R0 >> 24 & 0xff];
$t1 = $S0[$R1 >> 24 & 0xff] ^
$S1[$R1 & 0xff] ^
$S2[$R1 >> 8 & 0xff] ^
$S3[$R1 >> 16 & 0xff];
$R3^= ' . sprintf($safeint, '$t0 + ($t1 << 1) + ' . $K[--$ki]) . ';
$R3 = $R3 >> 1 & 0x7fffffff | $R3 << 31;
$R2 = ($R2 >> 31 & 0x1 | $R2 << 1) ^ ' . sprintf($safeint, '($t0 + $t1 + '.$K[--$ki] . ')') . ';
$t0 = $S0[$R2 & 0xff] ^
$S1[$R2 >> 8 & 0xff] ^
$S2[$R2 >> 16 & 0xff] ^
$S3[$R2 >> 24 & 0xff];
$t1 = $S0[$R3 >> 24 & 0xff] ^
$S1[$R3 & 0xff] ^
$S2[$R3 >> 8 & 0xff] ^
$S3[$R3 >> 16 & 0xff];
$R1^= ' . sprintf($safeint, '$t0 + ($t1 << 1) + ' . $K[--$ki]) . ';
$R1 = $R1 >> 1 & 0x7fffffff | $R1 << 31;
$R0 = ($R0 >> 31 & 0x1 | $R0 << 1) ^ ' . sprintf($safeint, '($t0 + $t1 + '.$K[--$ki] . ')') . ';
';
}
$decrypt_block.= '
$in = pack("V4", ' . $K[0] . ' ^ $R2,
' . $K[1] . ' ^ $R3,
' . $K[2] . ' ^ $R0,
' . $K[3] . ' ^ $R1);
';
$lambda_functions[$code_hash] = $this->_createInlineCryptFunction(
array(
'init_crypt' => $init_crypt,
'init_encrypt' => '',
'init_decrypt' => '',
'encrypt_block' => $encrypt_block,
'decrypt_block' => $decrypt_block
)
);
}
$this->inline_crypt = $lambda_functions[$code_hash];
}
}
PK ��$Z�ѕ��6 �6 ' phpseclib/phpseclib/Crypt/TripleDES.phpnu �[��� <?php
/**
* Pure-PHP implementation of Triple DES.
*
* Uses mcrypt, if available, and an internal implementation, otherwise. Operates in the EDE3 mode (encrypt-decrypt-encrypt).
*
* PHP version 5
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $des = new \phpseclib\Crypt\TripleDES();
*
* $des->setKey('abcdefghijklmnopqrstuvwx');
*
* $size = 10 * 1024;
* $plaintext = '';
* for ($i = 0; $i < $size; $i++) {
* $plaintext.= 'a';
* }
*
* echo $des->decrypt($des->encrypt($plaintext));
* ?>
* </code>
*
* @category Crypt
* @package TripleDES
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2007 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt;
/**
* Pure-PHP implementation of Triple DES.
*
* @package TripleDES
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class TripleDES extends DES
{
/**
* Encrypt / decrypt using inner chaining
*
* Inner chaining is used by SSH-1 and is generally considered to be less secure then outer chaining (self::MODE_CBC3).
*/
const MODE_3CBC = -2;
/**
* Encrypt / decrypt using outer chaining
*
* Outer chaining is used by SSH-2 and when the mode is set to \phpseclib\Crypt\Base::MODE_CBC.
*/
const MODE_CBC3 = Base::MODE_CBC;
/**
* Key Length (in bytes)
*
* @see \phpseclib\Crypt\TripleDES::setKeyLength()
* @var int
* @access private
*/
var $key_length = 24;
/**
* The default salt used by setPassword()
*
* @see \phpseclib\Crypt\Base::password_default_salt
* @see \phpseclib\Crypt\Base::setPassword()
* @var string
* @access private
*/
var $password_default_salt = 'phpseclib';
/**
* The mcrypt specific name of the cipher
*
* @see \phpseclib\Crypt\DES::cipher_name_mcrypt
* @see \phpseclib\Crypt\Base::cipher_name_mcrypt
* @var string
* @access private
*/
var $cipher_name_mcrypt = 'tripledes';
/**
* Optimizing value while CFB-encrypting
*
* @see \phpseclib\Crypt\Base::cfb_init_len
* @var int
* @access private
*/
var $cfb_init_len = 750;
/**
* max possible size of $key
*
* @see self::setKey()
* @see \phpseclib\Crypt\DES::setKey()
* @var string
* @access private
*/
var $key_length_max = 24;
/**
* Internal flag whether using self::MODE_3CBC or not
*
* @var bool
* @access private
*/
var $mode_3cbc;
/**
* The \phpseclib\Crypt\DES objects
*
* Used only if $mode_3cbc === true
*
* @var array
* @access private
*/
var $des;
/**
* Default Constructor.
*
* Determines whether or not the mcrypt extension should be used.
*
* $mode could be:
*
* - \phpseclib\Crypt\Base::MODE_ECB
*
* - \phpseclib\Crypt\Base::MODE_CBC
*
* - \phpseclib\Crypt\Base::MODE_CTR
*
* - \phpseclib\Crypt\Base::MODE_CFB
*
* - \phpseclib\Crypt\Base::MODE_OFB
*
* - \phpseclib\Crypt\TripleDES::MODE_3CBC
*
* If not explicitly set, \phpseclib\Crypt\Base::MODE_CBC will be used.
*
* @see \phpseclib\Crypt\DES::__construct()
* @see \phpseclib\Crypt\Base::__construct()
* @param int $mode
* @access public
*/
function __construct($mode = Base::MODE_CBC)
{
switch ($mode) {
// In case of self::MODE_3CBC, we init as CRYPT_DES_MODE_CBC
// and additional flag us internally as 3CBC
case self::MODE_3CBC:
parent::__construct(Base::MODE_CBC);
$this->mode_3cbc = true;
// This three $des'es will do the 3CBC work (if $key > 64bits)
$this->des = array(
new DES(Base::MODE_CBC),
new DES(Base::MODE_CBC),
new DES(Base::MODE_CBC),
);
// we're going to be doing the padding, ourselves, so disable it in the \phpseclib\Crypt\DES objects
$this->des[0]->disablePadding();
$this->des[1]->disablePadding();
$this->des[2]->disablePadding();
break;
// If not 3CBC, we init as usual
default:
parent::__construct($mode);
}
}
/**
* Test for engine validity
*
* This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
*
* @see \phpseclib\Crypt\Base::__construct()
* @param int $engine
* @access public
* @return bool
*/
function isValidEngine($engine)
{
if ($engine == self::ENGINE_OPENSSL) {
$this->cipher_name_openssl_ecb = 'des-ede3';
$mode = $this->_openssl_translate_mode();
$this->cipher_name_openssl = $mode == 'ecb' ? 'des-ede3' : 'des-ede3-' . $mode;
}
return parent::isValidEngine($engine);
}
/**
* Sets the initialization vector. (optional)
*
* SetIV is not required when \phpseclib\Crypt\Base::MODE_ECB is being used. If not explicitly set, it'll be assumed
* to be all zero's.
*
* @see \phpseclib\Crypt\Base::setIV()
* @access public
* @param string $iv
*/
function setIV($iv)
{
parent::setIV($iv);
if ($this->mode_3cbc) {
$this->des[0]->setIV($iv);
$this->des[1]->setIV($iv);
$this->des[2]->setIV($iv);
}
}
/**
* Sets the key length.
*
* Valid key lengths are 64, 128 and 192
*
* @see \phpseclib\Crypt\Base:setKeyLength()
* @access public
* @param int $length
*/
function setKeyLength($length)
{
$length >>= 3;
switch (true) {
case $length <= 8:
$this->key_length = 8;
break;
case $length <= 16:
$this->key_length = 16;
break;
default:
$this->key_length = 24;
}
parent::setKeyLength($length);
}
/**
* Sets the key.
*
* Keys can be of any length. Triple DES, itself, can use 128-bit (eg. strlen($key) == 16) or
* 192-bit (eg. strlen($key) == 24) keys. This function pads and truncates $key as appropriate.
*
* DES also requires that every eighth bit be a parity bit, however, we'll ignore that.
*
* If the key is not explicitly set, it'll be assumed to be all null bytes.
*
* @access public
* @see \phpseclib\Crypt\DES::setKey()
* @see \phpseclib\Crypt\Base::setKey()
* @param string $key
*/
function setKey($key)
{
$length = $this->explicit_key_length ? $this->key_length : strlen($key);
if ($length > 8) {
$key = str_pad(substr($key, 0, 24), 24, chr(0));
// if $key is between 64 and 128-bits, use the first 64-bits as the last, per this:
// http://php.net/function.mcrypt-encrypt#47973
$key = $length <= 16 ? substr_replace($key, substr($key, 0, 8), 16) : substr($key, 0, 24);
} else {
$key = str_pad($key, 8, chr(0));
}
parent::setKey($key);
// And in case of self::MODE_3CBC:
// if key <= 64bits we not need the 3 $des to work,
// because we will then act as regular DES-CBC with just a <= 64bit key.
// So only if the key > 64bits (> 8 bytes) we will call setKey() for the 3 $des.
if ($this->mode_3cbc && $length > 8) {
$this->des[0]->setKey(substr($key, 0, 8));
$this->des[1]->setKey(substr($key, 8, 8));
$this->des[2]->setKey(substr($key, 16, 8));
}
}
/**
* Encrypts a message.
*
* @see \phpseclib\Crypt\Base::encrypt()
* @access public
* @param string $plaintext
* @return string $cipertext
*/
function encrypt($plaintext)
{
// parent::en/decrypt() is able to do all the work for all modes and keylengths,
// except for: self::MODE_3CBC (inner chaining CBC) with a key > 64bits
// if the key is smaller then 8, do what we'd normally do
if ($this->mode_3cbc && strlen($this->key) > 8) {
return $this->des[2]->encrypt(
$this->des[1]->decrypt(
$this->des[0]->encrypt(
$this->_pad($plaintext)
)
)
);
}
return parent::encrypt($plaintext);
}
/**
* Decrypts a message.
*
* @see \phpseclib\Crypt\Base::decrypt()
* @access public
* @param string $ciphertext
* @return string $plaintext
*/
function decrypt($ciphertext)
{
if ($this->mode_3cbc && strlen($this->key) > 8) {
return $this->_unpad(
$this->des[0]->decrypt(
$this->des[1]->encrypt(
$this->des[2]->decrypt(
str_pad($ciphertext, (strlen($ciphertext) + 7) & 0xFFFFFFF8, "\0")
)
)
)
);
}
return parent::decrypt($ciphertext);
}
/**
* Treat consecutive "packets" as if they are a continuous buffer.
*
* Say you have a 16-byte plaintext $plaintext. Using the default behavior, the two following code snippets
* will yield different outputs:
*
* <code>
* echo $des->encrypt(substr($plaintext, 0, 8));
* echo $des->encrypt(substr($plaintext, 8, 8));
* </code>
* <code>
* echo $des->encrypt($plaintext);
* </code>
*
* The solution is to enable the continuous buffer. Although this will resolve the above discrepancy, it creates
* another, as demonstrated with the following:
*
* <code>
* $des->encrypt(substr($plaintext, 0, 8));
* echo $des->decrypt($des->encrypt(substr($plaintext, 8, 8)));
* </code>
* <code>
* echo $des->decrypt($des->encrypt(substr($plaintext, 8, 8)));
* </code>
*
* With the continuous buffer disabled, these would yield the same output. With it enabled, they yield different
* outputs. The reason is due to the fact that the initialization vector's change after every encryption /
* decryption round when the continuous buffer is enabled. When it's disabled, they remain constant.
*
* Put another way, when the continuous buffer is enabled, the state of the \phpseclib\Crypt\DES() object changes after each
* encryption / decryption round, whereas otherwise, it'd remain constant. For this reason, it's recommended that
* continuous buffers not be used. They do offer better security and are, in fact, sometimes required (SSH uses them),
* however, they are also less intuitive and more likely to cause you problems.
*
* @see \phpseclib\Crypt\Base::enableContinuousBuffer()
* @see self::disableContinuousBuffer()
* @access public
*/
function enableContinuousBuffer()
{
parent::enableContinuousBuffer();
if ($this->mode_3cbc) {
$this->des[0]->enableContinuousBuffer();
$this->des[1]->enableContinuousBuffer();
$this->des[2]->enableContinuousBuffer();
}
}
/**
* Treat consecutive packets as if they are a discontinuous buffer.
*
* The default behavior.
*
* @see \phpseclib\Crypt\Base::disableContinuousBuffer()
* @see self::enableContinuousBuffer()
* @access public
*/
function disableContinuousBuffer()
{
parent::disableContinuousBuffer();
if ($this->mode_3cbc) {
$this->des[0]->disableContinuousBuffer();
$this->des[1]->disableContinuousBuffer();
$this->des[2]->disableContinuousBuffer();
}
}
/**
* Creates the key schedule
*
* @see \phpseclib\Crypt\DES::_setupKey()
* @see \phpseclib\Crypt\Base::_setupKey()
* @access private
*/
function _setupKey()
{
switch (true) {
// if $key <= 64bits we configure our internal pure-php cipher engine
// to act as regular [1]DES, not as 3DES. mcrypt.so::tripledes does the same.
case strlen($this->key) <= 8:
$this->des_rounds = 1;
break;
// otherwise, if $key > 64bits, we configure our engine to work as 3DES.
default:
$this->des_rounds = 3;
// (only) if 3CBC is used we have, of course, to setup the $des[0-2] keys also separately.
if ($this->mode_3cbc) {
$this->des[0]->_setupKey();
$this->des[1]->_setupKey();
$this->des[2]->_setupKey();
// because $des[0-2] will, now, do all the work we can return here
// not need unnecessary stress parent::_setupKey() with our, now unused, $key.
return;
}
}
// setup our key
parent::_setupKey();
}
/**
* Sets the internal crypt engine
*
* @see \phpseclib\Crypt\Base::__construct()
* @see \phpseclib\Crypt\Base::setPreferredEngine()
* @param int $engine
* @access public
* @return int
*/
function setPreferredEngine($engine)
{
if ($this->mode_3cbc) {
$this->des[0]->setPreferredEngine($engine);
$this->des[1]->setPreferredEngine($engine);
$this->des[2]->setPreferredEngine($engine);
}
return parent::setPreferredEngine($engine);
}
}
PK ��$Z�H%�yr yr " phpseclib/phpseclib/Crypt/Hash.phpnu �[��� <?php
/**
* Pure-PHP implementations of keyed-hash message authentication codes (HMACs) and various cryptographic hashing functions.
*
* Uses hash() or mhash() if available and an internal implementation, otherwise. Currently supports the following:
*
* md2, md5, md5-96, sha1, sha1-96, sha256, sha256-96, sha384, and sha512, sha512-96
*
* If {@link self::setKey() setKey()} is called, {@link self::hash() hash()} will return the HMAC as opposed to
* the hash. If no valid algorithm is provided, sha1 will be used.
*
* PHP version 5
*
* {@internal The variable names are the same as those in
* {@link http://tools.ietf.org/html/rfc2104#section-2 RFC2104}.}}
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $hash = new \phpseclib\Crypt\Hash('sha1');
*
* $hash->setKey('abcdefg');
*
* echo base64_encode($hash->hash('abcdefg'));
* ?>
* </code>
*
* @category Crypt
* @package Hash
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2007 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt;
use phpseclib\Math\BigInteger;
/**
* Pure-PHP implementations of keyed-hash message authentication codes (HMACs) and various cryptographic hashing functions.
*
* @package Hash
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class Hash
{
/**#@+
* @access private
* @see \phpseclib\Crypt\Hash::__construct()
*/
/**
* Toggles the internal implementation
*/
const MODE_INTERNAL = 1;
/**
* Toggles the mhash() implementation, which has been deprecated on PHP 5.3.0+.
*/
const MODE_MHASH = 2;
/**
* Toggles the hash() implementation, which works on PHP 5.1.2+.
*/
const MODE_HASH = 3;
/**#@-*/
/**
* Hash Parameter
*
* @see self::setHash()
* @var int
* @access private
*/
var $hashParam;
/**
* Byte-length of compression blocks / key (Internal HMAC)
*
* @see self::setAlgorithm()
* @var int
* @access private
*/
var $b;
/**
* Byte-length of hash output (Internal HMAC)
*
* @see self::setHash()
* @var int
* @access private
*/
var $l = false;
/**
* Hash Algorithm
*
* @see self::setHash()
* @var string
* @access private
*/
var $hash;
/**
* Key
*
* @see self::setKey()
* @var string
* @access private
*/
var $key = false;
/**
* Computed Key
*
* @see self::_computeKey()
* @var string
* @access private
*/
var $computedKey = false;
/**
* Outer XOR (Internal HMAC)
*
* @see self::setKey()
* @var string
* @access private
*/
var $opad;
/**
* Inner XOR (Internal HMAC)
*
* @see self::setKey()
* @var string
* @access private
*/
var $ipad;
/**
* Engine
*
* @see self::setHash()
* @var string
* @access private
*/
var $engine;
/**
* Default Constructor.
*
* @param string $hash
* @return \phpseclib\Crypt\Hash
* @access public
*/
function __construct($hash = 'sha1')
{
if (!defined('CRYPT_HASH_MODE')) {
switch (true) {
case extension_loaded('hash'):
define('CRYPT_HASH_MODE', self::MODE_HASH);
break;
case extension_loaded('mhash'):
define('CRYPT_HASH_MODE', self::MODE_MHASH);
break;
default:
define('CRYPT_HASH_MODE', self::MODE_INTERNAL);
}
}
$this->setHash($hash);
}
/**
* Sets the key for HMACs
*
* Keys can be of any length.
*
* @access public
* @param string $key
*/
function setKey($key = false)
{
$this->key = $key;
$this->_computeKey();
}
/**
* Pre-compute the key used by the HMAC
*
* Quoting http://tools.ietf.org/html/rfc2104#section-2, "Applications that use keys longer than B bytes
* will first hash the key using H and then use the resultant L byte string as the actual key to HMAC."
*
* As documented in https://www.reddit.com/r/PHP/comments/9nct2l/symfonypolyfill_hash_pbkdf2_correct_fix_for/
* when doing an HMAC multiple times it's faster to compute the hash once instead of computing it during
* every call
*
* @access private
*/
function _computeKey()
{
if ($this->key === false) {
$this->computedKey = false;
return;
}
if (strlen($this->key) <= $this->b) {
$this->computedKey = $this->key;
return;
}
switch ($this->engine) {
case self::MODE_MHASH:
$this->computedKey = mhash($this->hash, $this->key);
break;
case self::MODE_HASH:
$this->computedKey = hash($this->hash, $this->key, true);
break;
case self::MODE_INTERNAL:
$this->computedKey = call_user_func($this->hash, $this->key);
}
}
/**
* Gets the hash function.
*
* As set by the constructor or by the setHash() method.
*
* @access public
* @return string
*/
function getHash()
{
return $this->hashParam;
}
/**
* Sets the hash function.
*
* @access public
* @param string $hash
*/
function setHash($hash)
{
$this->hashParam = $hash = strtolower($hash);
switch ($hash) {
case 'md5-96':
case 'sha1-96':
case 'sha256-96':
case 'sha512-96':
$hash = substr($hash, 0, -3);
$this->l = 12; // 96 / 8 = 12
break;
case 'md2':
case 'md5':
$this->l = 16;
break;
case 'sha1':
$this->l = 20;
break;
case 'sha256':
$this->l = 32;
break;
case 'sha384':
$this->l = 48;
break;
case 'sha512':
$this->l = 64;
}
switch ($hash) {
case 'md2-96':
case 'md2':
$this->b = 16;
case 'md5-96':
case 'sha1-96':
case 'sha224-96':
case 'sha256-96':
case 'md2':
case 'md5':
case 'sha1':
case 'sha224':
case 'sha256':
$this->b = 64;
break;
default:
$this->b = 128;
}
switch ($hash) {
case 'md2':
$this->engine = CRYPT_HASH_MODE == self::MODE_HASH && in_array('md2', hash_algos()) ?
self::MODE_HASH : self::MODE_INTERNAL;
break;
case 'sha384':
case 'sha512':
$this->engine = CRYPT_HASH_MODE == self::MODE_MHASH ? self::MODE_INTERNAL : CRYPT_HASH_MODE;
break;
default:
$this->engine = CRYPT_HASH_MODE;
}
switch ($this->engine) {
case self::MODE_MHASH:
switch ($hash) {
case 'md5':
$this->hash = MHASH_MD5;
break;
case 'sha256':
$this->hash = MHASH_SHA256;
break;
case 'sha1':
default:
$this->hash = MHASH_SHA1;
}
$this->_computeKey(self::MODE_MHASH);
return;
case self::MODE_HASH:
switch ($hash) {
case 'md5':
$this->hash = 'md5';
return;
case 'md2':
case 'sha256':
case 'sha384':
case 'sha512':
$this->hash = $hash;
return;
case 'sha1':
default:
$this->hash = 'sha1';
}
$this->_computeKey(self::MODE_HASH);
return;
}
switch ($hash) {
case 'md2':
$this->hash = array($this, '_md2');
break;
case 'md5':
$this->hash = array($this, '_md5');
break;
case 'sha256':
$this->hash = array($this, '_sha256');
break;
case 'sha384':
case 'sha512':
$this->hash = array($this, '_sha512');
break;
case 'sha1':
default:
$this->hash = array($this, '_sha1');
}
$this->ipad = str_repeat(chr(0x36), $this->b);
$this->opad = str_repeat(chr(0x5C), $this->b);
$this->_computeKey(self::MODE_INTERNAL);
}
/**
* Compute the HMAC.
*
* @access public
* @param string $text
* @return string
*/
function hash($text)
{
if (!empty($this->key) || is_string($this->key)) {
switch ($this->engine) {
case self::MODE_MHASH:
$output = mhash($this->hash, $text, $this->computedKey);
break;
case self::MODE_HASH:
$output = hash_hmac($this->hash, $text, $this->computedKey, true);
break;
case self::MODE_INTERNAL:
$key = str_pad($this->computedKey, $this->b, chr(0)); // step 1
$temp = $this->ipad ^ $key; // step 2
$temp .= $text; // step 3
$temp = call_user_func($this->hash, $temp); // step 4
$output = $this->opad ^ $key; // step 5
$output.= $temp; // step 6
$output = call_user_func($this->hash, $output); // step 7
}
} else {
switch ($this->engine) {
case self::MODE_MHASH:
$output = mhash($this->hash, $text);
break;
case self::MODE_HASH:
$output = hash($this->hash, $text, true);
break;
case self::MODE_INTERNAL:
$output = call_user_func($this->hash, $text);
}
}
return substr($output, 0, $this->l);
}
/**
* Returns the hash length (in bytes)
*
* @access public
* @return int
*/
function getLength()
{
return $this->l;
}
/**
* Wrapper for MD5
*
* @access private
* @param string $m
*/
function _md5($m)
{
return pack('H*', md5($m));
}
/**
* Wrapper for SHA1
*
* @access private
* @param string $m
*/
function _sha1($m)
{
return pack('H*', sha1($m));
}
/**
* Pure-PHP implementation of MD2
*
* See {@link http://tools.ietf.org/html/rfc1319 RFC1319}.
*
* @access private
* @param string $m
*/
function _md2($m)
{
static $s = array(
41, 46, 67, 201, 162, 216, 124, 1, 61, 54, 84, 161, 236, 240, 6,
19, 98, 167, 5, 243, 192, 199, 115, 140, 152, 147, 43, 217, 188,
76, 130, 202, 30, 155, 87, 60, 253, 212, 224, 22, 103, 66, 111, 24,
138, 23, 229, 18, 190, 78, 196, 214, 218, 158, 222, 73, 160, 251,
245, 142, 187, 47, 238, 122, 169, 104, 121, 145, 21, 178, 7, 63,
148, 194, 16, 137, 11, 34, 95, 33, 128, 127, 93, 154, 90, 144, 50,
39, 53, 62, 204, 231, 191, 247, 151, 3, 255, 25, 48, 179, 72, 165,
181, 209, 215, 94, 146, 42, 172, 86, 170, 198, 79, 184, 56, 210,
150, 164, 125, 182, 118, 252, 107, 226, 156, 116, 4, 241, 69, 157,
112, 89, 100, 113, 135, 32, 134, 91, 207, 101, 230, 45, 168, 2, 27,
96, 37, 173, 174, 176, 185, 246, 28, 70, 97, 105, 52, 64, 126, 15,
85, 71, 163, 35, 221, 81, 175, 58, 195, 92, 249, 206, 186, 197,
234, 38, 44, 83, 13, 110, 133, 40, 132, 9, 211, 223, 205, 244, 65,
129, 77, 82, 106, 220, 55, 200, 108, 193, 171, 250, 36, 225, 123,
8, 12, 189, 177, 74, 120, 136, 149, 139, 227, 99, 232, 109, 233,
203, 213, 254, 59, 0, 29, 57, 242, 239, 183, 14, 102, 88, 208, 228,
166, 119, 114, 248, 235, 117, 75, 10, 49, 68, 80, 180, 143, 237,
31, 26, 219, 153, 141, 51, 159, 17, 131, 20
);
// Step 1. Append Padding Bytes
$pad = 16 - (strlen($m) & 0xF);
$m.= str_repeat(chr($pad), $pad);
$length = strlen($m);
// Step 2. Append Checksum
$c = str_repeat(chr(0), 16);
$l = chr(0);
for ($i = 0; $i < $length; $i+= 16) {
for ($j = 0; $j < 16; $j++) {
// RFC1319 incorrectly states that C[j] should be set to S[c xor L]
//$c[$j] = chr($s[ord($m[$i + $j] ^ $l)]);
// per <http://www.rfc-editor.org/errata_search.php?rfc=1319>, however, C[j] should be set to S[c xor L] xor C[j]
$c[$j] = chr($s[ord($m[$i + $j] ^ $l)] ^ ord($c[$j]));
$l = $c[$j];
}
}
$m.= $c;
$length+= 16;
// Step 3. Initialize MD Buffer
$x = str_repeat(chr(0), 48);
// Step 4. Process Message in 16-Byte Blocks
for ($i = 0; $i < $length; $i+= 16) {
for ($j = 0; $j < 16; $j++) {
$x[$j + 16] = $m[$i + $j];
$x[$j + 32] = $x[$j + 16] ^ $x[$j];
}
$t = chr(0);
for ($j = 0; $j < 18; $j++) {
for ($k = 0; $k < 48; $k++) {
$x[$k] = $t = $x[$k] ^ chr($s[ord($t)]);
//$t = $x[$k] = $x[$k] ^ chr($s[ord($t)]);
}
$t = chr(ord($t) + $j);
}
}
// Step 5. Output
return substr($x, 0, 16);
}
/**
* Pure-PHP implementation of SHA256
*
* See {@link http://en.wikipedia.org/wiki/SHA_hash_functions#SHA-256_.28a_SHA-2_variant.29_pseudocode SHA-256 (a SHA-2 variant) pseudocode - Wikipedia}.
*
* @access private
* @param string $m
*/
function _sha256($m)
{
if (extension_loaded('suhosin')) {
return pack('H*', sha256($m));
}
// Initialize variables
$hash = array(
0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
);
// Initialize table of round constants
// (first 32 bits of the fractional parts of the cube roots of the first 64 primes 2..311)
static $k = array(
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
);
// Pre-processing
$length = strlen($m);
// to round to nearest 56 mod 64, we'll add 64 - (length + (64 - 56)) % 64
$m.= str_repeat(chr(0), 64 - (($length + 8) & 0x3F));
$m[$length] = chr(0x80);
// we don't support hashing strings 512MB long
$m.= pack('N2', 0, $length << 3);
// Process the message in successive 512-bit chunks
$chunks = str_split($m, 64);
foreach ($chunks as $chunk) {
$w = array();
for ($i = 0; $i < 16; $i++) {
extract(unpack('Ntemp', $this->_string_shift($chunk, 4)));
$w[] = $temp;
}
// Extend the sixteen 32-bit words into sixty-four 32-bit words
for ($i = 16; $i < 64; $i++) {
// @codingStandardsIgnoreStart
$s0 = $this->_rightRotate($w[$i - 15], 7) ^
$this->_rightRotate($w[$i - 15], 18) ^
$this->_rightShift( $w[$i - 15], 3);
$s1 = $this->_rightRotate($w[$i - 2], 17) ^
$this->_rightRotate($w[$i - 2], 19) ^
$this->_rightShift( $w[$i - 2], 10);
// @codingStandardsIgnoreEnd
$w[$i] = $this->_add($w[$i - 16], $s0, $w[$i - 7], $s1);
}
// Initialize hash value for this chunk
list($a, $b, $c, $d, $e, $f, $g, $h) = $hash;
// Main loop
for ($i = 0; $i < 64; $i++) {
$s0 = $this->_rightRotate($a, 2) ^
$this->_rightRotate($a, 13) ^
$this->_rightRotate($a, 22);
$maj = ($a & $b) ^
($a & $c) ^
($b & $c);
$t2 = $this->_add($s0, $maj);
$s1 = $this->_rightRotate($e, 6) ^
$this->_rightRotate($e, 11) ^
$this->_rightRotate($e, 25);
$ch = ($e & $f) ^
($this->_not($e) & $g);
$t1 = $this->_add($h, $s1, $ch, $k[$i], $w[$i]);
$h = $g;
$g = $f;
$f = $e;
$e = $this->_add($d, $t1);
$d = $c;
$c = $b;
$b = $a;
$a = $this->_add($t1, $t2);
}
// Add this chunk's hash to result so far
$hash = array(
$this->_add($hash[0], $a),
$this->_add($hash[1], $b),
$this->_add($hash[2], $c),
$this->_add($hash[3], $d),
$this->_add($hash[4], $e),
$this->_add($hash[5], $f),
$this->_add($hash[6], $g),
$this->_add($hash[7], $h)
);
}
// Produce the final hash value (big-endian)
return pack('N8', $hash[0], $hash[1], $hash[2], $hash[3], $hash[4], $hash[5], $hash[6], $hash[7]);
}
/**
* Pure-PHP implementation of SHA384 and SHA512
*
* @access private
* @param string $m
*/
function _sha512($m)
{
static $init384, $init512, $k;
if (!isset($k)) {
// Initialize variables
$init384 = array( // initial values for SHA384
'cbbb9d5dc1059ed8', '629a292a367cd507', '9159015a3070dd17', '152fecd8f70e5939',
'67332667ffc00b31', '8eb44a8768581511', 'db0c2e0d64f98fa7', '47b5481dbefa4fa4'
);
$init512 = array( // initial values for SHA512
'6a09e667f3bcc908', 'bb67ae8584caa73b', '3c6ef372fe94f82b', 'a54ff53a5f1d36f1',
'510e527fade682d1', '9b05688c2b3e6c1f', '1f83d9abfb41bd6b', '5be0cd19137e2179'
);
for ($i = 0; $i < 8; $i++) {
$init384[$i] = new BigInteger($init384[$i], 16);
$init384[$i]->setPrecision(64);
$init512[$i] = new BigInteger($init512[$i], 16);
$init512[$i]->setPrecision(64);
}
// Initialize table of round constants
// (first 64 bits of the fractional parts of the cube roots of the first 80 primes 2..409)
$k = array(
'428a2f98d728ae22', '7137449123ef65cd', 'b5c0fbcfec4d3b2f', 'e9b5dba58189dbbc',
'3956c25bf348b538', '59f111f1b605d019', '923f82a4af194f9b', 'ab1c5ed5da6d8118',
'd807aa98a3030242', '12835b0145706fbe', '243185be4ee4b28c', '550c7dc3d5ffb4e2',
'72be5d74f27b896f', '80deb1fe3b1696b1', '9bdc06a725c71235', 'c19bf174cf692694',
'e49b69c19ef14ad2', 'efbe4786384f25e3', '0fc19dc68b8cd5b5', '240ca1cc77ac9c65',
'2de92c6f592b0275', '4a7484aa6ea6e483', '5cb0a9dcbd41fbd4', '76f988da831153b5',
'983e5152ee66dfab', 'a831c66d2db43210', 'b00327c898fb213f', 'bf597fc7beef0ee4',
'c6e00bf33da88fc2', 'd5a79147930aa725', '06ca6351e003826f', '142929670a0e6e70',
'27b70a8546d22ffc', '2e1b21385c26c926', '4d2c6dfc5ac42aed', '53380d139d95b3df',
'650a73548baf63de', '766a0abb3c77b2a8', '81c2c92e47edaee6', '92722c851482353b',
'a2bfe8a14cf10364', 'a81a664bbc423001', 'c24b8b70d0f89791', 'c76c51a30654be30',
'd192e819d6ef5218', 'd69906245565a910', 'f40e35855771202a', '106aa07032bbd1b8',
'19a4c116b8d2d0c8', '1e376c085141ab53', '2748774cdf8eeb99', '34b0bcb5e19b48a8',
'391c0cb3c5c95a63', '4ed8aa4ae3418acb', '5b9cca4f7763e373', '682e6ff3d6b2b8a3',
'748f82ee5defb2fc', '78a5636f43172f60', '84c87814a1f0ab72', '8cc702081a6439ec',
'90befffa23631e28', 'a4506cebde82bde9', 'bef9a3f7b2c67915', 'c67178f2e372532b',
'ca273eceea26619c', 'd186b8c721c0c207', 'eada7dd6cde0eb1e', 'f57d4f7fee6ed178',
'06f067aa72176fba', '0a637dc5a2c898a6', '113f9804bef90dae', '1b710b35131c471b',
'28db77f523047d84', '32caab7b40c72493', '3c9ebe0a15c9bebc', '431d67c49c100d4c',
'4cc5d4becb3e42b6', '597f299cfc657e2a', '5fcb6fab3ad6faec', '6c44198c4a475817'
);
for ($i = 0; $i < 80; $i++) {
$k[$i] = new BigInteger($k[$i], 16);
}
}
$hash = $this->l == 48 ? $init384 : $init512;
// Pre-processing
$length = strlen($m);
// to round to nearest 112 mod 128, we'll add 128 - (length + (128 - 112)) % 128
$m.= str_repeat(chr(0), 128 - (($length + 16) & 0x7F));
$m[$length] = chr(0x80);
// we don't support hashing strings 512MB long
$m.= pack('N4', 0, 0, 0, $length << 3);
// Process the message in successive 1024-bit chunks
$chunks = str_split($m, 128);
foreach ($chunks as $chunk) {
$w = array();
for ($i = 0; $i < 16; $i++) {
$temp = new BigInteger($this->_string_shift($chunk, 8), 256);
$temp->setPrecision(64);
$w[] = $temp;
}
// Extend the sixteen 32-bit words into eighty 32-bit words
for ($i = 16; $i < 80; $i++) {
$temp = array(
$w[$i - 15]->bitwise_rightRotate(1),
$w[$i - 15]->bitwise_rightRotate(8),
$w[$i - 15]->bitwise_rightShift(7)
);
$s0 = $temp[0]->bitwise_xor($temp[1]);
$s0 = $s0->bitwise_xor($temp[2]);
$temp = array(
$w[$i - 2]->bitwise_rightRotate(19),
$w[$i - 2]->bitwise_rightRotate(61),
$w[$i - 2]->bitwise_rightShift(6)
);
$s1 = $temp[0]->bitwise_xor($temp[1]);
$s1 = $s1->bitwise_xor($temp[2]);
$w[$i] = $w[$i - 16]->copy();
$w[$i] = $w[$i]->add($s0);
$w[$i] = $w[$i]->add($w[$i - 7]);
$w[$i] = $w[$i]->add($s1);
}
// Initialize hash value for this chunk
$a = $hash[0]->copy();
$b = $hash[1]->copy();
$c = $hash[2]->copy();
$d = $hash[3]->copy();
$e = $hash[4]->copy();
$f = $hash[5]->copy();
$g = $hash[6]->copy();
$h = $hash[7]->copy();
// Main loop
for ($i = 0; $i < 80; $i++) {
$temp = array(
$a->bitwise_rightRotate(28),
$a->bitwise_rightRotate(34),
$a->bitwise_rightRotate(39)
);
$s0 = $temp[0]->bitwise_xor($temp[1]);
$s0 = $s0->bitwise_xor($temp[2]);
$temp = array(
$a->bitwise_and($b),
$a->bitwise_and($c),
$b->bitwise_and($c)
);
$maj = $temp[0]->bitwise_xor($temp[1]);
$maj = $maj->bitwise_xor($temp[2]);
$t2 = $s0->add($maj);
$temp = array(
$e->bitwise_rightRotate(14),
$e->bitwise_rightRotate(18),
$e->bitwise_rightRotate(41)
);
$s1 = $temp[0]->bitwise_xor($temp[1]);
$s1 = $s1->bitwise_xor($temp[2]);
$temp = array(
$e->bitwise_and($f),
$g->bitwise_and($e->bitwise_not())
);
$ch = $temp[0]->bitwise_xor($temp[1]);
$t1 = $h->add($s1);
$t1 = $t1->add($ch);
$t1 = $t1->add($k[$i]);
$t1 = $t1->add($w[$i]);
$h = $g->copy();
$g = $f->copy();
$f = $e->copy();
$e = $d->add($t1);
$d = $c->copy();
$c = $b->copy();
$b = $a->copy();
$a = $t1->add($t2);
}
// Add this chunk's hash to result so far
$hash = array(
$hash[0]->add($a),
$hash[1]->add($b),
$hash[2]->add($c),
$hash[3]->add($d),
$hash[4]->add($e),
$hash[5]->add($f),
$hash[6]->add($g),
$hash[7]->add($h)
);
}
// Produce the final hash value (big-endian)
// (\phpseclib\Crypt\Hash::hash() trims the output for hashes but not for HMACs. as such, we trim the output here)
$temp = $hash[0]->toBytes() . $hash[1]->toBytes() . $hash[2]->toBytes() . $hash[3]->toBytes() .
$hash[4]->toBytes() . $hash[5]->toBytes();
if ($this->l != 48) {
$temp.= $hash[6]->toBytes() . $hash[7]->toBytes();
}
return $temp;
}
/**
* Right Rotate
*
* @access private
* @param int $int
* @param int $amt
* @see self::_sha256()
* @return int
*/
function _rightRotate($int, $amt)
{
$invamt = 32 - $amt;
$mask = (1 << $invamt) - 1;
return (($int << $invamt) & 0xFFFFFFFF) | (($int >> $amt) & $mask);
}
/**
* Right Shift
*
* @access private
* @param int $int
* @param int $amt
* @see self::_sha256()
* @return int
*/
function _rightShift($int, $amt)
{
$mask = (1 << (32 - $amt)) - 1;
return ($int >> $amt) & $mask;
}
/**
* Not
*
* @access private
* @param int $int
* @see self::_sha256()
* @return int
*/
function _not($int)
{
return ~$int & 0xFFFFFFFF;
}
/**
* Add
*
* _sha256() adds multiple unsigned 32-bit integers. Since PHP doesn't support unsigned integers and since the
* possibility of overflow exists, care has to be taken. BigInteger could be used but this should be faster.
*
* @return int
* @see self::_sha256()
* @access private
*/
function _add()
{
static $mod;
if (!isset($mod)) {
$mod = pow(2, 32);
}
$result = 0;
$arguments = func_get_args();
foreach ($arguments as $argument) {
$result+= $argument < 0 ? ($argument & 0x7FFFFFFF) + 0x80000000 : $argument;
}
if ((php_uname('m') & "\xDF\xDF\xDF") != 'ARM') {
return fmod($result, $mod);
}
return (fmod($result, 0x80000000) & 0x7FFFFFFF) |
((fmod(floor($result / 0x80000000), 2) & 1) << 31);
}
/**
* String Shift
*
* Inspired by array_shift
*
* @param string $string
* @param int $index
* @return string
* @access private
*/
function _string_shift(&$string, $index = 1)
{
$substr = substr($string, 0, $index);
$string = substr($string, $index);
return $substr;
}
}
PK ��$ZS
�3 � � " phpseclib/phpseclib/Crypt/Base.phpnu �[��� <?php
/**
* Base Class for all \phpseclib\Crypt\* cipher classes
*
* PHP version 5
*
* Internally for phpseclib developers:
* If you plan to add a new cipher class, please note following rules:
*
* - The new \phpseclib\Crypt\* cipher class should extend \phpseclib\Crypt\Base
*
* - Following methods are then required to be overridden/overloaded:
*
* - _encryptBlock()
*
* - _decryptBlock()
*
* - _setupKey()
*
* - All other methods are optional to be overridden/overloaded
*
* - Look at the source code of the current ciphers how they extend \phpseclib\Crypt\Base
* and take one of them as a start up for the new cipher class.
*
* - Please read all the other comments/notes/hints here also for each class var/method
*
* @category Crypt
* @package Base
* @author Jim Wigginton <terrafrost@php.net>
* @author Hans-Juergen Petrich <petrich@tronic-media.com>
* @copyright 2007 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt;
/**
* Base Class for all \phpseclib\Crypt\* cipher classes
*
* @package Base
* @author Jim Wigginton <terrafrost@php.net>
* @author Hans-Juergen Petrich <petrich@tronic-media.com>
*/
abstract class Base
{
/**#@+
* @access public
* @see \phpseclib\Crypt\Base::encrypt()
* @see \phpseclib\Crypt\Base::decrypt()
*/
/**
* Encrypt / decrypt using the Counter mode.
*
* Set to -1 since that's what Crypt/Random.php uses to index the CTR mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Counter_.28CTR.29
*/
const MODE_CTR = -1;
/**
* Encrypt / decrypt using the Electronic Code Book mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Electronic_codebook_.28ECB.29
*/
const MODE_ECB = 1;
/**
* Encrypt / decrypt using the Code Book Chaining mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher-block_chaining_.28CBC.29
*/
const MODE_CBC = 2;
/**
* Encrypt / decrypt using the Cipher Feedback mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher_feedback_.28CFB.29
*/
const MODE_CFB = 3;
/**
* Encrypt / decrypt using the Cipher Feedback mode (8bit)
*/
const MODE_CFB8 = 6;
/**
* Encrypt / decrypt using the Output Feedback mode (8bit)
*/
const MODE_OFB8 = 7;
/**
* Encrypt / decrypt using the Output Feedback mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Output_feedback_.28OFB.29
*/
const MODE_OFB = 4;
/**
* Encrypt / decrypt using streaming mode.
*/
const MODE_STREAM = 5;
/**#@-*/
/**
* Whirlpool available flag
*
* @see \phpseclib\Crypt\Base::_hashInlineCryptFunction()
* @var bool
* @access private
*/
static $WHIRLPOOL_AVAILABLE;
/**#@+
* @access private
* @see \phpseclib\Crypt\Base::__construct()
*/
/**
* Base value for the internal implementation $engine switch
*/
const ENGINE_INTERNAL = 1;
/**
* Base value for the mcrypt implementation $engine switch
*/
const ENGINE_MCRYPT = 2;
/**
* Base value for the mcrypt implementation $engine switch
*/
const ENGINE_OPENSSL = 3;
/**#@-*/
/**
* The Encryption Mode
*
* @see self::__construct()
* @var int
* @access private
*/
var $mode;
/**
* The Block Length of the block cipher
*
* @var int
* @access private
*/
var $block_size = 16;
/**
* The Key
*
* @see self::setKey()
* @var string
* @access private
*/
var $key = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
/**
* The Initialization Vector
*
* @see self::setIV()
* @var string
* @access private
*/
var $iv = '';
/**
* A "sliding" Initialization Vector
*
* @see self::enableContinuousBuffer()
* @see self::_clearBuffers()
* @var string
* @access private
*/
var $encryptIV;
/**
* A "sliding" Initialization Vector
*
* @see self::enableContinuousBuffer()
* @see self::_clearBuffers()
* @var string
* @access private
*/
var $decryptIV;
/**
* Continuous Buffer status
*
* @see self::enableContinuousBuffer()
* @var bool
* @access private
*/
var $continuousBuffer = false;
/**
* Encryption buffer for CTR, OFB and CFB modes
*
* @see self::encrypt()
* @see self::_clearBuffers()
* @var array
* @access private
*/
var $enbuffer;
/**
* Decryption buffer for CTR, OFB and CFB modes
*
* @see self::decrypt()
* @see self::_clearBuffers()
* @var array
* @access private
*/
var $debuffer;
/**
* mcrypt resource for encryption
*
* The mcrypt resource can be recreated every time something needs to be created or it can be created just once.
* Since mcrypt operates in continuous mode, by default, it'll need to be recreated when in non-continuous mode.
*
* @see self::encrypt()
* @var resource
* @access private
*/
var $enmcrypt;
/**
* mcrypt resource for decryption
*
* The mcrypt resource can be recreated every time something needs to be created or it can be created just once.
* Since mcrypt operates in continuous mode, by default, it'll need to be recreated when in non-continuous mode.
*
* @see self::decrypt()
* @var resource
* @access private
*/
var $demcrypt;
/**
* Does the enmcrypt resource need to be (re)initialized?
*
* @see \phpseclib\Crypt\Twofish::setKey()
* @see \phpseclib\Crypt\Twofish::setIV()
* @var bool
* @access private
*/
var $enchanged = true;
/**
* Does the demcrypt resource need to be (re)initialized?
*
* @see \phpseclib\Crypt\Twofish::setKey()
* @see \phpseclib\Crypt\Twofish::setIV()
* @var bool
* @access private
*/
var $dechanged = true;
/**
* mcrypt resource for CFB mode
*
* mcrypt's CFB mode, in (and only in) buffered context,
* is broken, so phpseclib implements the CFB mode by it self,
* even when the mcrypt php extension is available.
*
* In order to do the CFB-mode work (fast) phpseclib
* use a separate ECB-mode mcrypt resource.
*
* @link http://phpseclib.sourceforge.net/cfb-demo.phps
* @see self::encrypt()
* @see self::decrypt()
* @see self::_setupMcrypt()
* @var resource
* @access private
*/
var $ecb;
/**
* Optimizing value while CFB-encrypting
*
* Only relevant if $continuousBuffer enabled
* and $engine == self::ENGINE_MCRYPT
*
* It's faster to re-init $enmcrypt if
* $buffer bytes > $cfb_init_len than
* using the $ecb resource furthermore.
*
* This value depends of the chosen cipher
* and the time it would be needed for it's
* initialization [by mcrypt_generic_init()]
* which, typically, depends on the complexity
* on its internaly Key-expanding algorithm.
*
* @see self::encrypt()
* @var int
* @access private
*/
var $cfb_init_len = 600;
/**
* Does internal cipher state need to be (re)initialized?
*
* @see self::setKey()
* @see self::setIV()
* @see self::disableContinuousBuffer()
* @var bool
* @access private
*/
var $changed = true;
/**
* Padding status
*
* @see self::enablePadding()
* @var bool
* @access private
*/
var $padding = true;
/**
* Is the mode one that is paddable?
*
* @see self::__construct()
* @var bool
* @access private
*/
var $paddable = false;
/**
* Holds which crypt engine internaly should be use,
* which will be determined automatically on __construct()
*
* Currently available $engines are:
* - self::ENGINE_OPENSSL (very fast, php-extension: openssl, extension_loaded('openssl') required)
* - self::ENGINE_MCRYPT (fast, php-extension: mcrypt, extension_loaded('mcrypt') required)
* - self::ENGINE_INTERNAL (slower, pure php-engine, no php-extension required)
*
* @see self::_setEngine()
* @see self::encrypt()
* @see self::decrypt()
* @var int
* @access private
*/
var $engine;
/**
* Holds the preferred crypt engine
*
* @see self::_setEngine()
* @see self::setPreferredEngine()
* @var int
* @access private
*/
var $preferredEngine;
/**
* The mcrypt specific name of the cipher
*
* Only used if $engine == self::ENGINE_MCRYPT
*
* @link http://www.php.net/mcrypt_module_open
* @link http://www.php.net/mcrypt_list_algorithms
* @see self::_setupMcrypt()
* @var string
* @access private
*/
var $cipher_name_mcrypt;
/**
* The openssl specific name of the cipher
*
* Only used if $engine == self::ENGINE_OPENSSL
*
* @link http://www.php.net/openssl-get-cipher-methods
* @var string
* @access private
*/
var $cipher_name_openssl;
/**
* The openssl specific name of the cipher in ECB mode
*
* If OpenSSL does not support the mode we're trying to use (CTR)
* it can still be emulated with ECB mode.
*
* @link http://www.php.net/openssl-get-cipher-methods
* @var string
* @access private
*/
var $cipher_name_openssl_ecb;
/**
* The default salt used by setPassword()
*
* @see self::setPassword()
* @var string
* @access private
*/
var $password_default_salt = 'phpseclib/salt';
/**
* The name of the performance-optimized callback function
*
* Used by encrypt() / decrypt()
* only if $engine == self::ENGINE_INTERNAL
*
* @see self::encrypt()
* @see self::decrypt()
* @see self::_setupInlineCrypt()
* @see self::$use_inline_crypt
* @var Callback
* @access private
*/
var $inline_crypt;
/**
* Holds whether performance-optimized $inline_crypt() can/should be used.
*
* @see self::encrypt()
* @see self::decrypt()
* @see self::inline_crypt
* @var mixed
* @access private
*/
var $use_inline_crypt = true;
/**
* If OpenSSL can be used in ECB but not in CTR we can emulate CTR
*
* @see self::_openssl_ctr_process()
* @var bool
* @access private
*/
var $openssl_emulate_ctr = false;
/**
* Determines what options are passed to openssl_encrypt/decrypt
*
* @see self::isValidEngine()
* @var mixed
* @access private
*/
var $openssl_options;
/**
* Has the key length explicitly been set or should it be derived from the key, itself?
*
* @see self::setKeyLength()
* @var bool
* @access private
*/
var $explicit_key_length = false;
/**
* Don't truncate / null pad key
*
* @see self::_clearBuffers()
* @var bool
* @access private
*/
var $skip_key_adjustment = false;
/**
* Default Constructor.
*
* Determines whether or not the mcrypt extension should be used.
*
* $mode could be:
*
* - self::MODE_ECB
*
* - self::MODE_CBC
*
* - self::MODE_CTR
*
* - self::MODE_CFB
*
* - self::MODE_OFB
*
* If not explicitly set, self::MODE_CBC will be used.
*
* @param int $mode
* @access public
*/
function __construct($mode = self::MODE_CBC)
{
// $mode dependent settings
switch ($mode) {
case self::MODE_ECB:
$this->paddable = true;
$this->mode = self::MODE_ECB;
break;
case self::MODE_CTR:
case self::MODE_CFB:
case self::MODE_CFB8:
case self::MODE_OFB8:
case self::MODE_OFB:
case self::MODE_STREAM:
$this->mode = $mode;
break;
case self::MODE_CBC:
default:
$this->paddable = true;
$this->mode = self::MODE_CBC;
}
$this->_setEngine();
// Determining whether inline crypting can be used by the cipher
if ($this->use_inline_crypt !== false) {
$this->use_inline_crypt = version_compare(PHP_VERSION, '5.3.0') >= 0 || function_exists('create_function');
}
if (!defined('PHP_INT_SIZE')) {
define('PHP_INT_SIZE', 4);
}
if (!defined('CRYPT_BASE_USE_REG_INTVAL')) {
switch (true) {
// PHP_OS & "\xDF\xDF\xDF" == strtoupper(substr(PHP_OS, 0, 3)), but a lot faster
case (PHP_OS & "\xDF\xDF\xDF") === 'WIN':
case (php_uname('m') & "\xDF\xDF\xDF") != 'ARM':
case PHP_INT_SIZE == 8:
define('CRYPT_BASE_USE_REG_INTVAL', true);
break;
case (php_uname('m') & "\xDF\xDF\xDF") == 'ARM':
switch (true) {
/* PHP 7.0.0 introduced a bug that affected 32-bit ARM processors:
https://github.com/php/php-src/commit/716da71446ebbd40fa6cf2cea8a4b70f504cc3cd
altho the changelogs make no mention of it, this bug was fixed with this commit:
https://github.com/php/php-src/commit/c1729272b17a1fe893d1a54e423d3b71470f3ee8
affected versions of PHP are: 7.0.x, 7.1.0 - 7.1.23 and 7.2.0 - 7.2.11 */
case PHP_VERSION_ID >= 70000 && PHP_VERSION_ID <= 70123:
case PHP_VERSION_ID >= 70200 && PHP_VERSION_ID <= 70211:
define('CRYPT_BASE_USE_REG_INTVAL', false);
break;
default:
define('CRYPT_BASE_USE_REG_INTVAL', true);
}
}
}
}
/**
* Sets the initialization vector. (optional)
*
* SetIV is not required when self::MODE_ECB (or ie for AES: \phpseclib\Crypt\AES::MODE_ECB) is being used. If not explicitly set, it'll be assumed
* to be all zero's.
*
* @access public
* @param string $iv
* @internal Can be overwritten by a sub class, but does not have to be
*/
function setIV($iv)
{
if ($this->mode == self::MODE_ECB) {
return;
}
$this->iv = $iv;
$this->changed = true;
}
/**
* Sets the key length.
*
* Keys with explicitly set lengths need to be treated accordingly
*
* @access public
* @param int $length
*/
function setKeyLength($length)
{
$this->explicit_key_length = true;
$this->changed = true;
$this->_setEngine();
}
/**
* Returns the current key length in bits
*
* @access public
* @return int
*/
function getKeyLength()
{
return $this->key_length << 3;
}
/**
* Returns the current block length in bits
*
* @access public
* @return int
*/
function getBlockLength()
{
return $this->block_size << 3;
}
/**
* Sets the key.
*
* The min/max length(s) of the key depends on the cipher which is used.
* If the key not fits the length(s) of the cipher it will paded with null bytes
* up to the closest valid key length. If the key is more than max length,
* we trim the excess bits.
*
* If the key is not explicitly set, it'll be assumed to be all null bytes.
*
* @access public
* @param string $key
* @internal Could, but not must, extend by the child Crypt_* class
*/
function setKey($key)
{
if (!$this->explicit_key_length) {
$this->setKeyLength(strlen($key) << 3);
$this->explicit_key_length = false;
}
$this->key = $key;
$this->changed = true;
$this->_setEngine();
}
/**
* Sets the password.
*
* Depending on what $method is set to, setPassword()'s (optional) parameters are as follows:
* {@link http://en.wikipedia.org/wiki/PBKDF2 pbkdf2} or pbkdf1:
* $hash, $salt, $count, $dkLen
*
* Where $hash (default = sha1) currently supports the following hashes: see: Crypt/Hash.php
* {@link https://en.wikipedia.org/wiki/Bcrypt bcypt}:
* $salt, $rounds, $keylen
*
* This is a modified version of bcrypt used by OpenSSH.
*
* @see Crypt/Hash.php
* @param string $password
* @param string $method
* @return bool
* @access public
* @internal Could, but not must, extend by the child Crypt_* class
*/
function setPassword($password, $method = 'pbkdf2')
{
$key = '';
switch ($method) {
case 'bcrypt':
$func_args = func_get_args();
if (!isset($func_args[2])) {
return false;
}
$salt = $func_args[2];
$rounds = isset($func_args[3]) ? $func_args[3] : 16;
$keylen = isset($func_args[4]) ? $func_args[4] : $this->key_length;
$bf = new Blowfish();
$key = $bf->bcrypt_pbkdf($password, $salt, $keylen + $this->block_size, $rounds);
if (!$key) {
return false;
}
$this->setKey(substr($key, 0, $keylen));
$this->setIV(substr($key, $keylen));
return true;
default: // 'pbkdf2' or 'pbkdf1'
$func_args = func_get_args();
// Hash function
$hash = isset($func_args[2]) ? $func_args[2] : 'sha1';
// WPA and WPA2 use the SSID as the salt
$salt = isset($func_args[3]) ? $func_args[3] : $this->password_default_salt;
// RFC2898#section-4.2 uses 1,000 iterations by default
// WPA and WPA2 use 4,096.
$count = isset($func_args[4]) ? $func_args[4] : 1000;
// Keylength
if (isset($func_args[5])) {
$dkLen = $func_args[5];
} else {
$dkLen = $method == 'pbkdf1' ? 2 * $this->key_length : $this->key_length;
}
switch (true) {
case $method == 'pbkdf1':
$hashObj = new Hash();
$hashObj->setHash($hash);
if ($dkLen > $hashObj->getLength()) {
user_error('Derived key too long');
return false;
}
$t = $password . $salt;
for ($i = 0; $i < $count; ++$i) {
$t = $hashObj->hash($t);
}
$key = substr($t, 0, $dkLen);
$this->setKey(substr($key, 0, $dkLen >> 1));
$this->setIV(substr($key, $dkLen >> 1));
return true;
// Determining if php[>=5.5.0]'s hash_pbkdf2() function avail- and useable
case !function_exists('hash_pbkdf2'):
case !function_exists('hash_algos'):
case !in_array($hash, hash_algos()):
$i = 1;
$hmac = new Hash();
$hmac->setHash($hash);
$hmac->setKey($password);
while (strlen($key) < $dkLen) {
$f = $u = $hmac->hash($salt . pack('N', $i++));
for ($j = 2; $j <= $count; ++$j) {
$u = $hmac->hash($u);
$f^= $u;
}
$key.= $f;
}
$key = substr($key, 0, $dkLen);
break;
default:
$key = hash_pbkdf2($hash, $password, $salt, $count, $dkLen, true);
}
}
$this->setKey($key);
return true;
}
/**
* Encrypts a message.
*
* $plaintext will be padded with additional bytes such that it's length is a multiple of the block size. Other cipher
* implementations may or may not pad in the same manner. Other common approaches to padding and the reasons why it's
* necessary are discussed in the following
* URL:
*
* {@link http://www.di-mgt.com.au/cryptopad.html http://www.di-mgt.com.au/cryptopad.html}
*
* An alternative to padding is to, separately, send the length of the file. This is what SSH, in fact, does.
* strlen($plaintext) will still need to be a multiple of the block size, however, arbitrary values can be added to make it that
* length.
*
* @see self::decrypt()
* @access public
* @param string $plaintext
* @return string $ciphertext
* @internal Could, but not must, extend by the child Crypt_* class
*/
function encrypt($plaintext)
{
if ($this->paddable) {
$plaintext = $this->_pad($plaintext);
}
if ($this->engine === self::ENGINE_OPENSSL) {
if ($this->changed) {
$this->_clearBuffers();
$this->changed = false;
}
switch ($this->mode) {
case self::MODE_STREAM:
return openssl_encrypt($plaintext, $this->cipher_name_openssl, $this->key, $this->openssl_options);
case self::MODE_ECB:
$result = @openssl_encrypt($plaintext, $this->cipher_name_openssl, $this->key, $this->openssl_options);
return !defined('OPENSSL_RAW_DATA') ? substr($result, 0, -$this->block_size) : $result;
case self::MODE_CBC:
$result = openssl_encrypt($plaintext, $this->cipher_name_openssl, $this->key, $this->openssl_options, $this->encryptIV);
if (!defined('OPENSSL_RAW_DATA')) {
$result = substr($result, 0, -$this->block_size);
}
if ($this->continuousBuffer) {
$this->encryptIV = substr($result, -$this->block_size);
}
return $result;
case self::MODE_CTR:
return $this->_openssl_ctr_process($plaintext, $this->encryptIV, $this->enbuffer);
case self::MODE_CFB:
// cfb loosely routines inspired by openssl's:
// {@link http://cvs.openssl.org/fileview?f=openssl/crypto/modes/cfb128.c&v=1.3.2.2.2.1}
$ciphertext = '';
if ($this->continuousBuffer) {
$iv = &$this->encryptIV;
$pos = &$this->enbuffer['pos'];
} else {
$iv = $this->encryptIV;
$pos = 0;
}
$len = strlen($plaintext);
$i = 0;
if ($pos) {
$orig_pos = $pos;
$max = $this->block_size - $pos;
if ($len >= $max) {
$i = $max;
$len-= $max;
$pos = 0;
} else {
$i = $len;
$pos+= $len;
$len = 0;
}
// ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $blocksize
$ciphertext = substr($iv, $orig_pos) ^ $plaintext;
$iv = substr_replace($iv, $ciphertext, $orig_pos, $i);
$plaintext = substr($plaintext, $i);
}
$overflow = $len % $this->block_size;
if ($overflow) {
$ciphertext.= openssl_encrypt(substr($plaintext, 0, -$overflow) . str_repeat("\0", $this->block_size), $this->cipher_name_openssl, $this->key, $this->openssl_options, $iv);
$iv = $this->_string_pop($ciphertext, $this->block_size);
$size = $len - $overflow;
$block = $iv ^ substr($plaintext, -$overflow);
$iv = substr_replace($iv, $block, 0, $overflow);
$ciphertext.= $block;
$pos = $overflow;
} elseif ($len) {
$ciphertext = openssl_encrypt($plaintext, $this->cipher_name_openssl, $this->key, $this->openssl_options, $iv);
$iv = substr($ciphertext, -$this->block_size);
}
return $ciphertext;
case self::MODE_CFB8:
$ciphertext = openssl_encrypt($plaintext, $this->cipher_name_openssl, $this->key, $this->openssl_options, $this->encryptIV);
if ($this->continuousBuffer) {
if (($len = strlen($ciphertext)) >= $this->block_size) {
$this->encryptIV = substr($ciphertext, -$this->block_size);
} else {
$this->encryptIV = substr($this->encryptIV, $len - $this->block_size) . substr($ciphertext, -$len);
}
}
return $ciphertext;
case self::MODE_OFB8:
// OpenSSL has built in support for cfb8 but not ofb8
$ciphertext = '';
$len = strlen($plaintext);
$iv = $this->encryptIV;
for ($i = 0; $i < $len; ++$i) {
$xor = openssl_encrypt($iv, $this->cipher_name_openssl_ecb, $this->key, $this->openssl_options, $this->decryptIV);
$ciphertext.= $plaintext[$i] ^ $xor;
$iv = substr($iv, 1) . $xor[0];
}
if ($this->continuousBuffer) {
$this->encryptIV = $iv;
}
break;
case self::MODE_OFB:
return $this->_openssl_ofb_process($plaintext, $this->encryptIV, $this->enbuffer);
}
}
if ($this->engine === self::ENGINE_MCRYPT) {
set_error_handler(array($this, 'do_nothing'));
if ($this->changed) {
$this->_setupMcrypt();
$this->changed = false;
}
if ($this->enchanged) {
mcrypt_generic_init($this->enmcrypt, $this->key, $this->encryptIV);
$this->enchanged = false;
}
// re: {@link http://phpseclib.sourceforge.net/cfb-demo.phps}
// using mcrypt's default handing of CFB the above would output two different things. using phpseclib's
// rewritten CFB implementation the above outputs the same thing twice.
if ($this->mode == self::MODE_CFB && $this->continuousBuffer) {
$block_size = $this->block_size;
$iv = &$this->encryptIV;
$pos = &$this->enbuffer['pos'];
$len = strlen($plaintext);
$ciphertext = '';
$i = 0;
if ($pos) {
$orig_pos = $pos;
$max = $block_size - $pos;
if ($len >= $max) {
$i = $max;
$len-= $max;
$pos = 0;
} else {
$i = $len;
$pos+= $len;
$len = 0;
}
$ciphertext = substr($iv, $orig_pos) ^ $plaintext;
$iv = substr_replace($iv, $ciphertext, $orig_pos, $i);
$this->enbuffer['enmcrypt_init'] = true;
}
if ($len >= $block_size) {
if ($this->enbuffer['enmcrypt_init'] === false || $len > $this->cfb_init_len) {
if ($this->enbuffer['enmcrypt_init'] === true) {
mcrypt_generic_init($this->enmcrypt, $this->key, $iv);
$this->enbuffer['enmcrypt_init'] = false;
}
$ciphertext.= mcrypt_generic($this->enmcrypt, substr($plaintext, $i, $len - $len % $block_size));
$iv = substr($ciphertext, -$block_size);
$len%= $block_size;
} else {
while ($len >= $block_size) {
$iv = mcrypt_generic($this->ecb, $iv) ^ substr($plaintext, $i, $block_size);
$ciphertext.= $iv;
$len-= $block_size;
$i+= $block_size;
}
}
}
if ($len) {
$iv = mcrypt_generic($this->ecb, $iv);
$block = $iv ^ substr($plaintext, -$len);
$iv = substr_replace($iv, $block, 0, $len);
$ciphertext.= $block;
$pos = $len;
}
restore_error_handler();
return $ciphertext;
}
$ciphertext = mcrypt_generic($this->enmcrypt, $plaintext);
if (!$this->continuousBuffer) {
mcrypt_generic_init($this->enmcrypt, $this->key, $this->encryptIV);
}
restore_error_handler();
return $ciphertext;
}
if ($this->changed) {
$this->_setup();
$this->changed = false;
}
if ($this->use_inline_crypt) {
$inline = $this->inline_crypt;
return $inline('encrypt', $this, $plaintext);
}
$buffer = &$this->enbuffer;
$block_size = $this->block_size;
$ciphertext = '';
switch ($this->mode) {
case self::MODE_ECB:
for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
$ciphertext.= $this->_encryptBlock(substr($plaintext, $i, $block_size));
}
break;
case self::MODE_CBC:
$xor = $this->encryptIV;
for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
$block = substr($plaintext, $i, $block_size);
$block = $this->_encryptBlock($block ^ $xor);
$xor = $block;
$ciphertext.= $block;
}
if ($this->continuousBuffer) {
$this->encryptIV = $xor;
}
break;
case self::MODE_CTR:
$xor = $this->encryptIV;
if (strlen($buffer['ciphertext'])) {
for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
$block = substr($plaintext, $i, $block_size);
if (strlen($block) > strlen($buffer['ciphertext'])) {
$buffer['ciphertext'].= $this->_encryptBlock($xor);
$this->_increment_str($xor);
}
$key = $this->_string_shift($buffer['ciphertext'], $block_size);
$ciphertext.= $block ^ $key;
}
} else {
for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
$block = substr($plaintext, $i, $block_size);
$key = $this->_encryptBlock($xor);
$this->_increment_str($xor);
$ciphertext.= $block ^ $key;
}
}
if ($this->continuousBuffer) {
$this->encryptIV = $xor;
if ($start = strlen($plaintext) % $block_size) {
$buffer['ciphertext'] = substr($key, $start) . $buffer['ciphertext'];
}
}
break;
case self::MODE_CFB:
// cfb loosely routines inspired by openssl's:
// {@link http://cvs.openssl.org/fileview?f=openssl/crypto/modes/cfb128.c&v=1.3.2.2.2.1}
if ($this->continuousBuffer) {
$iv = &$this->encryptIV;
$pos = &$buffer['pos'];
} else {
$iv = $this->encryptIV;
$pos = 0;
}
$len = strlen($plaintext);
$i = 0;
if ($pos) {
$orig_pos = $pos;
$max = $block_size - $pos;
if ($len >= $max) {
$i = $max;
$len-= $max;
$pos = 0;
} else {
$i = $len;
$pos+= $len;
$len = 0;
}
// ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $blocksize
$ciphertext = substr($iv, $orig_pos) ^ $plaintext;
$iv = substr_replace($iv, $ciphertext, $orig_pos, $i);
}
while ($len >= $block_size) {
$iv = $this->_encryptBlock($iv) ^ substr($plaintext, $i, $block_size);
$ciphertext.= $iv;
$len-= $block_size;
$i+= $block_size;
}
if ($len) {
$iv = $this->_encryptBlock($iv);
$block = $iv ^ substr($plaintext, $i);
$iv = substr_replace($iv, $block, 0, $len);
$ciphertext.= $block;
$pos = $len;
}
break;
case self::MODE_CFB8:
// compared to regular CFB, which encrypts a block at a time,
// here, we're encrypting a byte at a time
$ciphertext = '';
$len = strlen($plaintext);
$iv = $this->encryptIV;
for ($i = 0; $i < $len; ++$i) {
$ciphertext.= ($c = $plaintext[$i] ^ $this->_encryptBlock($iv));
$iv = substr($iv, 1) . $c;
}
if ($this->continuousBuffer) {
if ($len >= $block_size) {
$this->encryptIV = substr($ciphertext, -$block_size);
} else {
$this->encryptIV = substr($this->encryptIV, $len - $block_size) . substr($ciphertext, -$len);
}
}
break;
case self::MODE_OFB8:
$ciphertext = '';
$len = strlen($plaintext);
$iv = $this->encryptIV;
for ($i = 0; $i < $len; ++$i) {
$xor = $this->_encryptBlock($iv);
$ciphertext.= $plaintext[$i] ^ $xor;
$iv = substr($iv, 1) . $xor[0];
}
if ($this->continuousBuffer) {
$this->encryptIV = $iv;
}
break;
case self::MODE_OFB:
$xor = $this->encryptIV;
if (strlen($buffer['xor'])) {
for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
$block = substr($plaintext, $i, $block_size);
if (strlen($block) > strlen($buffer['xor'])) {
$xor = $this->_encryptBlock($xor);
$buffer['xor'].= $xor;
}
$key = $this->_string_shift($buffer['xor'], $block_size);
$ciphertext.= $block ^ $key;
}
} else {
for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
$xor = $this->_encryptBlock($xor);
$ciphertext.= substr($plaintext, $i, $block_size) ^ $xor;
}
$key = $xor;
}
if ($this->continuousBuffer) {
$this->encryptIV = $xor;
if ($start = strlen($plaintext) % $block_size) {
$buffer['xor'] = substr($key, $start) . $buffer['xor'];
}
}
break;
case self::MODE_STREAM:
$ciphertext = $this->_encryptBlock($plaintext);
break;
}
return $ciphertext;
}
/**
* Decrypts a message.
*
* If strlen($ciphertext) is not a multiple of the block size, null bytes will be added to the end of the string until
* it is.
*
* @see self::encrypt()
* @access public
* @param string $ciphertext
* @return string $plaintext
* @internal Could, but not must, extend by the child Crypt_* class
*/
function decrypt($ciphertext)
{
if ($this->paddable) {
// we pad with chr(0) since that's what mcrypt_generic does. to quote from {@link http://www.php.net/function.mcrypt-generic}:
// "The data is padded with "\0" to make sure the length of the data is n * blocksize."
$ciphertext = str_pad($ciphertext, strlen($ciphertext) + ($this->block_size - strlen($ciphertext) % $this->block_size) % $this->block_size, chr(0));
}
if ($this->engine === self::ENGINE_OPENSSL) {
if ($this->changed) {
$this->_clearBuffers();
$this->changed = false;
}
switch ($this->mode) {
case self::MODE_STREAM:
$plaintext = openssl_decrypt($ciphertext, $this->cipher_name_openssl, $this->key, $this->openssl_options);
break;
case self::MODE_ECB:
if (!defined('OPENSSL_RAW_DATA')) {
$ciphertext.= @openssl_encrypt('', $this->cipher_name_openssl_ecb, $this->key, true);
}
$plaintext = openssl_decrypt($ciphertext, $this->cipher_name_openssl, $this->key, $this->openssl_options);
break;
case self::MODE_CBC:
if (!defined('OPENSSL_RAW_DATA')) {
$padding = str_repeat(chr($this->block_size), $this->block_size) ^ substr($ciphertext, -$this->block_size);
$ciphertext.= substr(@openssl_encrypt($padding, $this->cipher_name_openssl_ecb, $this->key, true), 0, $this->block_size);
$offset = 2 * $this->block_size;
} else {
$offset = $this->block_size;
}
$plaintext = openssl_decrypt($ciphertext, $this->cipher_name_openssl, $this->key, $this->openssl_options, $this->decryptIV);
if ($this->continuousBuffer) {
$this->decryptIV = substr($ciphertext, -$offset, $this->block_size);
}
break;
case self::MODE_CTR:
$plaintext = $this->_openssl_ctr_process($ciphertext, $this->decryptIV, $this->debuffer);
break;
case self::MODE_CFB:
// cfb loosely routines inspired by openssl's:
// {@link http://cvs.openssl.org/fileview?f=openssl/crypto/modes/cfb128.c&v=1.3.2.2.2.1}
$plaintext = '';
if ($this->continuousBuffer) {
$iv = &$this->decryptIV;
$pos = &$this->debuffer['pos'];
} else {
$iv = $this->decryptIV;
$pos = 0;
}
$len = strlen($ciphertext);
$i = 0;
if ($pos) {
$orig_pos = $pos;
$max = $this->block_size - $pos;
if ($len >= $max) {
$i = $max;
$len-= $max;
$pos = 0;
} else {
$i = $len;
$pos+= $len;
$len = 0;
}
// ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $this->blocksize
$plaintext = substr($iv, $orig_pos) ^ $ciphertext;
$iv = substr_replace($iv, substr($ciphertext, 0, $i), $orig_pos, $i);
$ciphertext = substr($ciphertext, $i);
}
$overflow = $len % $this->block_size;
if ($overflow) {
$plaintext.= openssl_decrypt(substr($ciphertext, 0, -$overflow), $this->cipher_name_openssl, $this->key, $this->openssl_options, $iv);
if ($len - $overflow) {
$iv = substr($ciphertext, -$overflow - $this->block_size, -$overflow);
}
$iv = openssl_encrypt(str_repeat("\0", $this->block_size), $this->cipher_name_openssl, $this->key, $this->openssl_options, $iv);
$plaintext.= $iv ^ substr($ciphertext, -$overflow);
$iv = substr_replace($iv, substr($ciphertext, -$overflow), 0, $overflow);
$pos = $overflow;
} elseif ($len) {
$plaintext.= openssl_decrypt($ciphertext, $this->cipher_name_openssl, $this->key, $this->openssl_options, $iv);
$iv = substr($ciphertext, -$this->block_size);
}
break;
case self::MODE_CFB8:
$plaintext = openssl_decrypt($ciphertext, $this->cipher_name_openssl, $this->key, $this->openssl_options, $this->decryptIV);
if ($this->continuousBuffer) {
if (($len = strlen($ciphertext)) >= $this->block_size) {
$this->decryptIV = substr($ciphertext, -$this->block_size);
} else {
$this->decryptIV = substr($this->decryptIV, $len - $this->block_size) . substr($ciphertext, -$len);
}
}
break;
case self::MODE_OFB8:
$plaintext = '';
$len = strlen($ciphertext);
$iv = $this->decryptIV;
for ($i = 0; $i < $len; ++$i) {
$xor = openssl_encrypt($iv, $this->cipher_name_openssl_ecb, $this->key, $this->openssl_options, $this->decryptIV);
$plaintext.= $ciphertext[$i] ^ $xor;
$iv = substr($iv, 1) . $xor[0];
}
if ($this->continuousBuffer) {
$this->decryptIV = $iv;
}
break;
case self::MODE_OFB:
$plaintext = $this->_openssl_ofb_process($ciphertext, $this->decryptIV, $this->debuffer);
}
return $this->paddable ? $this->_unpad($plaintext) : $plaintext;
}
if ($this->engine === self::ENGINE_MCRYPT) {
set_error_handler(array($this, 'do_nothing'));
$block_size = $this->block_size;
if ($this->changed) {
$this->_setupMcrypt();
$this->changed = false;
}
if ($this->dechanged) {
mcrypt_generic_init($this->demcrypt, $this->key, $this->decryptIV);
$this->dechanged = false;
}
if ($this->mode == self::MODE_CFB && $this->continuousBuffer) {
$iv = &$this->decryptIV;
$pos = &$this->debuffer['pos'];
$len = strlen($ciphertext);
$plaintext = '';
$i = 0;
if ($pos) {
$orig_pos = $pos;
$max = $block_size - $pos;
if ($len >= $max) {
$i = $max;
$len-= $max;
$pos = 0;
} else {
$i = $len;
$pos+= $len;
$len = 0;
}
// ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $blocksize
$plaintext = substr($iv, $orig_pos) ^ $ciphertext;
$iv = substr_replace($iv, substr($ciphertext, 0, $i), $orig_pos, $i);
}
if ($len >= $block_size) {
$cb = substr($ciphertext, $i, $len - $len % $block_size);
$plaintext.= mcrypt_generic($this->ecb, $iv . $cb) ^ $cb;
$iv = substr($cb, -$block_size);
$len%= $block_size;
}
if ($len) {
$iv = mcrypt_generic($this->ecb, $iv);
$plaintext.= $iv ^ substr($ciphertext, -$len);
$iv = substr_replace($iv, substr($ciphertext, -$len), 0, $len);
$pos = $len;
}
restore_error_handler();
return $plaintext;
}
$plaintext = mdecrypt_generic($this->demcrypt, $ciphertext);
if (!$this->continuousBuffer) {
mcrypt_generic_init($this->demcrypt, $this->key, $this->decryptIV);
}
restore_error_handler();
return $this->paddable ? $this->_unpad($plaintext) : $plaintext;
}
if ($this->changed) {
$this->_setup();
$this->changed = false;
}
if ($this->use_inline_crypt) {
$inline = $this->inline_crypt;
return $inline('decrypt', $this, $ciphertext);
}
$block_size = $this->block_size;
$buffer = &$this->debuffer;
$plaintext = '';
switch ($this->mode) {
case self::MODE_ECB:
for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
$plaintext.= $this->_decryptBlock(substr($ciphertext, $i, $block_size));
}
break;
case self::MODE_CBC:
$xor = $this->decryptIV;
for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
$block = substr($ciphertext, $i, $block_size);
$plaintext.= $this->_decryptBlock($block) ^ $xor;
$xor = $block;
}
if ($this->continuousBuffer) {
$this->decryptIV = $xor;
}
break;
case self::MODE_CTR:
$xor = $this->decryptIV;
if (strlen($buffer['ciphertext'])) {
for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
$block = substr($ciphertext, $i, $block_size);
if (strlen($block) > strlen($buffer['ciphertext'])) {
$buffer['ciphertext'].= $this->_encryptBlock($xor);
$this->_increment_str($xor);
}
$key = $this->_string_shift($buffer['ciphertext'], $block_size);
$plaintext.= $block ^ $key;
}
} else {
for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
$block = substr($ciphertext, $i, $block_size);
$key = $this->_encryptBlock($xor);
$this->_increment_str($xor);
$plaintext.= $block ^ $key;
}
}
if ($this->continuousBuffer) {
$this->decryptIV = $xor;
if ($start = strlen($ciphertext) % $block_size) {
$buffer['ciphertext'] = substr($key, $start) . $buffer['ciphertext'];
}
}
break;
case self::MODE_CFB:
if ($this->continuousBuffer) {
$iv = &$this->decryptIV;
$pos = &$buffer['pos'];
} else {
$iv = $this->decryptIV;
$pos = 0;
}
$len = strlen($ciphertext);
$i = 0;
if ($pos) {
$orig_pos = $pos;
$max = $block_size - $pos;
if ($len >= $max) {
$i = $max;
$len-= $max;
$pos = 0;
} else {
$i = $len;
$pos+= $len;
$len = 0;
}
// ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $blocksize
$plaintext = substr($iv, $orig_pos) ^ $ciphertext;
$iv = substr_replace($iv, substr($ciphertext, 0, $i), $orig_pos, $i);
}
while ($len >= $block_size) {
$iv = $this->_encryptBlock($iv);
$cb = substr($ciphertext, $i, $block_size);
$plaintext.= $iv ^ $cb;
$iv = $cb;
$len-= $block_size;
$i+= $block_size;
}
if ($len) {
$iv = $this->_encryptBlock($iv);
$plaintext.= $iv ^ substr($ciphertext, $i);
$iv = substr_replace($iv, substr($ciphertext, $i), 0, $len);
$pos = $len;
}
break;
case self::MODE_CFB8:
$plaintext = '';
$len = strlen($ciphertext);
$iv = $this->decryptIV;
for ($i = 0; $i < $len; ++$i) {
$plaintext.= $ciphertext[$i] ^ $this->_encryptBlock($iv);
$iv = substr($iv, 1) . $ciphertext[$i];
}
if ($this->continuousBuffer) {
if ($len >= $block_size) {
$this->decryptIV = substr($ciphertext, -$block_size);
} else {
$this->decryptIV = substr($this->decryptIV, $len - $block_size) . substr($ciphertext, -$len);
}
}
break;
case self::MODE_OFB8:
$plaintext = '';
$len = strlen($ciphertext);
$iv = $this->decryptIV;
for ($i = 0; $i < $len; ++$i) {
$xor = $this->_encryptBlock($iv);
$plaintext.= $ciphertext[$i] ^ $xor;
$iv = substr($iv, 1) . $xor[0];
}
if ($this->continuousBuffer) {
$this->decryptIV = $iv;
}
break;
case self::MODE_OFB:
$xor = $this->decryptIV;
if (strlen($buffer['xor'])) {
for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
$block = substr($ciphertext, $i, $block_size);
if (strlen($block) > strlen($buffer['xor'])) {
$xor = $this->_encryptBlock($xor);
$buffer['xor'].= $xor;
}
$key = $this->_string_shift($buffer['xor'], $block_size);
$plaintext.= $block ^ $key;
}
} else {
for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
$xor = $this->_encryptBlock($xor);
$plaintext.= substr($ciphertext, $i, $block_size) ^ $xor;
}
$key = $xor;
}
if ($this->continuousBuffer) {
$this->decryptIV = $xor;
if ($start = strlen($ciphertext) % $block_size) {
$buffer['xor'] = substr($key, $start) . $buffer['xor'];
}
}
break;
case self::MODE_STREAM:
$plaintext = $this->_decryptBlock($ciphertext);
break;
}
return $this->paddable ? $this->_unpad($plaintext) : $plaintext;
}
/**
* OpenSSL CTR Processor
*
* PHP's OpenSSL bindings do not operate in continuous mode so we'll wrap around it. Since the keystream
* for CTR is the same for both encrypting and decrypting this function is re-used by both Base::encrypt()
* and Base::decrypt(). Also, OpenSSL doesn't implement CTR for all of it's symmetric ciphers so this
* function will emulate CTR with ECB when necessary.
*
* @see self::encrypt()
* @see self::decrypt()
* @param string $plaintext
* @param string $encryptIV
* @param array $buffer
* @return string
* @access private
*/
function _openssl_ctr_process($plaintext, &$encryptIV, &$buffer)
{
$ciphertext = '';
$block_size = $this->block_size;
$key = $this->key;
if ($this->openssl_emulate_ctr) {
$xor = $encryptIV;
if (strlen($buffer['ciphertext'])) {
for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
$block = substr($plaintext, $i, $block_size);
if (strlen($block) > strlen($buffer['ciphertext'])) {
$result = @openssl_encrypt($xor, $this->cipher_name_openssl_ecb, $key, $this->openssl_options);
$result = !defined('OPENSSL_RAW_DATA') ? substr($result, 0, -$this->block_size) : $result;
$buffer['ciphertext'].= $result;
}
$this->_increment_str($xor);
$otp = $this->_string_shift($buffer['ciphertext'], $block_size);
$ciphertext.= $block ^ $otp;
}
} else {
for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
$block = substr($plaintext, $i, $block_size);
$otp = @openssl_encrypt($xor, $this->cipher_name_openssl_ecb, $key, $this->openssl_options);
$otp = !defined('OPENSSL_RAW_DATA') ? substr($otp, 0, -$this->block_size) : $otp;
$this->_increment_str($xor);
$ciphertext.= $block ^ $otp;
}
}
if ($this->continuousBuffer) {
$encryptIV = $xor;
if ($start = strlen($plaintext) % $block_size) {
$buffer['ciphertext'] = substr($key, $start) . $buffer['ciphertext'];
}
}
return $ciphertext;
}
if (strlen($buffer['ciphertext'])) {
$ciphertext = $plaintext ^ $this->_string_shift($buffer['ciphertext'], strlen($plaintext));
$plaintext = substr($plaintext, strlen($ciphertext));
if (!strlen($plaintext)) {
return $ciphertext;
}
}
$overflow = strlen($plaintext) % $block_size;
if ($overflow) {
$plaintext2 = $this->_string_pop($plaintext, $overflow); // ie. trim $plaintext to a multiple of $block_size and put rest of $plaintext in $plaintext2
$encrypted = openssl_encrypt($plaintext . str_repeat("\0", $block_size), $this->cipher_name_openssl, $key, $this->openssl_options, $encryptIV);
$temp = $this->_string_pop($encrypted, $block_size);
$ciphertext.= $encrypted . ($plaintext2 ^ $temp);
if ($this->continuousBuffer) {
$buffer['ciphertext'] = substr($temp, $overflow);
$encryptIV = $temp;
}
} elseif (!strlen($buffer['ciphertext'])) {
$ciphertext.= openssl_encrypt($plaintext . str_repeat("\0", $block_size), $this->cipher_name_openssl, $key, $this->openssl_options, $encryptIV);
$temp = $this->_string_pop($ciphertext, $block_size);
if ($this->continuousBuffer) {
$encryptIV = $temp;
}
}
if ($this->continuousBuffer) {
if (!defined('OPENSSL_RAW_DATA')) {
$encryptIV.= @openssl_encrypt('', $this->cipher_name_openssl_ecb, $key, $this->openssl_options);
}
$encryptIV = openssl_decrypt($encryptIV, $this->cipher_name_openssl_ecb, $key, $this->openssl_options);
if ($overflow) {
$this->_increment_str($encryptIV);
}
}
return $ciphertext;
}
/**
* OpenSSL OFB Processor
*
* PHP's OpenSSL bindings do not operate in continuous mode so we'll wrap around it. Since the keystream
* for OFB is the same for both encrypting and decrypting this function is re-used by both Base::encrypt()
* and Base::decrypt().
*
* @see self::encrypt()
* @see self::decrypt()
* @param string $plaintext
* @param string $encryptIV
* @param array $buffer
* @return string
* @access private
*/
function _openssl_ofb_process($plaintext, &$encryptIV, &$buffer)
{
if (strlen($buffer['xor'])) {
$ciphertext = $plaintext ^ $buffer['xor'];
$buffer['xor'] = substr($buffer['xor'], strlen($ciphertext));
$plaintext = substr($plaintext, strlen($ciphertext));
} else {
$ciphertext = '';
}
$block_size = $this->block_size;
$len = strlen($plaintext);
$key = $this->key;
$overflow = $len % $block_size;
if (strlen($plaintext)) {
if ($overflow) {
$ciphertext.= openssl_encrypt(substr($plaintext, 0, -$overflow) . str_repeat("\0", $block_size), $this->cipher_name_openssl, $key, $this->openssl_options, $encryptIV);
$xor = $this->_string_pop($ciphertext, $block_size);
if ($this->continuousBuffer) {
$encryptIV = $xor;
}
$ciphertext.= $this->_string_shift($xor, $overflow) ^ substr($plaintext, -$overflow);
if ($this->continuousBuffer) {
$buffer['xor'] = $xor;
}
} else {
$ciphertext = openssl_encrypt($plaintext, $this->cipher_name_openssl, $key, $this->openssl_options, $encryptIV);
if ($this->continuousBuffer) {
$encryptIV = substr($ciphertext, -$block_size) ^ substr($plaintext, -$block_size);
}
}
}
return $ciphertext;
}
/**
* phpseclib <-> OpenSSL Mode Mapper
*
* May need to be overwritten by classes extending this one in some cases
*
* @return int
* @access private
*/
function _openssl_translate_mode()
{
switch ($this->mode) {
case self::MODE_ECB:
return 'ecb';
case self::MODE_CBC:
return 'cbc';
case self::MODE_CTR:
return 'ctr';
case self::MODE_CFB:
return 'cfb';
case self::MODE_CFB8:
return 'cfb8';
case self::MODE_OFB:
return 'ofb';
}
}
/**
* Pad "packets".
*
* Block ciphers working by encrypting between their specified [$this->]block_size at a time
* If you ever need to encrypt or decrypt something that isn't of the proper length, it becomes necessary to
* pad the input so that it is of the proper length.
*
* Padding is enabled by default. Sometimes, however, it is undesirable to pad strings. Such is the case in SSH,
* where "packets" are padded with random bytes before being encrypted. Unpad these packets and you risk stripping
* away characters that shouldn't be stripped away. (SSH knows how many bytes are added because the length is
* transmitted separately)
*
* @see self::disablePadding()
* @access public
*/
function enablePadding()
{
$this->padding = true;
}
/**
* Do not pad packets.
*
* @see self::enablePadding()
* @access public
*/
function disablePadding()
{
$this->padding = false;
}
/**
* Treat consecutive "packets" as if they are a continuous buffer.
*
* Say you have a 32-byte plaintext $plaintext. Using the default behavior, the two following code snippets
* will yield different outputs:
*
* <code>
* echo $rijndael->encrypt(substr($plaintext, 0, 16));
* echo $rijndael->encrypt(substr($plaintext, 16, 16));
* </code>
* <code>
* echo $rijndael->encrypt($plaintext);
* </code>
*
* The solution is to enable the continuous buffer. Although this will resolve the above discrepancy, it creates
* another, as demonstrated with the following:
*
* <code>
* $rijndael->encrypt(substr($plaintext, 0, 16));
* echo $rijndael->decrypt($rijndael->encrypt(substr($plaintext, 16, 16)));
* </code>
* <code>
* echo $rijndael->decrypt($rijndael->encrypt(substr($plaintext, 16, 16)));
* </code>
*
* With the continuous buffer disabled, these would yield the same output. With it enabled, they yield different
* outputs. The reason is due to the fact that the initialization vector's change after every encryption /
* decryption round when the continuous buffer is enabled. When it's disabled, they remain constant.
*
* Put another way, when the continuous buffer is enabled, the state of the \phpseclib\Crypt\*() object changes after each
* encryption / decryption round, whereas otherwise, it'd remain constant. For this reason, it's recommended that
* continuous buffers not be used. They do offer better security and are, in fact, sometimes required (SSH uses them),
* however, they are also less intuitive and more likely to cause you problems.
*
* @see self::disableContinuousBuffer()
* @access public
* @internal Could, but not must, extend by the child Crypt_* class
*/
function enableContinuousBuffer()
{
if ($this->mode == self::MODE_ECB) {
return;
}
$this->continuousBuffer = true;
$this->_setEngine();
}
/**
* Treat consecutive packets as if they are a discontinuous buffer.
*
* The default behavior.
*
* @see self::enableContinuousBuffer()
* @access public
* @internal Could, but not must, extend by the child Crypt_* class
*/
function disableContinuousBuffer()
{
if ($this->mode == self::MODE_ECB) {
return;
}
if (!$this->continuousBuffer) {
return;
}
$this->continuousBuffer = false;
$this->changed = true;
$this->_setEngine();
}
/**
* Test for engine validity
*
* @see self::__construct()
* @param int $engine
* @access public
* @return bool
*/
function isValidEngine($engine)
{
switch ($engine) {
case self::ENGINE_OPENSSL:
if ($this->mode == self::MODE_STREAM && $this->continuousBuffer) {
return false;
}
$this->openssl_emulate_ctr = false;
$result = $this->cipher_name_openssl &&
extension_loaded('openssl') &&
// PHP 5.3.0 - 5.3.2 did not let you set IV's
version_compare(PHP_VERSION, '5.3.3', '>=');
if (!$result) {
return false;
}
// prior to PHP 5.4.0 OPENSSL_RAW_DATA and OPENSSL_ZERO_PADDING were not defined. instead of expecting an integer
// $options openssl_encrypt expected a boolean $raw_data.
if (!defined('OPENSSL_RAW_DATA')) {
$this->openssl_options = true;
} else {
$this->openssl_options = OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING;
}
$methods = openssl_get_cipher_methods();
if (in_array($this->cipher_name_openssl, $methods)) {
return true;
}
// not all of openssl's symmetric cipher's support ctr. for those
// that don't we'll emulate it
switch ($this->mode) {
case self::MODE_CTR:
if (in_array($this->cipher_name_openssl_ecb, $methods)) {
$this->openssl_emulate_ctr = true;
return true;
}
}
return false;
case self::ENGINE_MCRYPT:
set_error_handler(array($this, 'do_nothing'));
$result = $this->cipher_name_mcrypt &&
extension_loaded('mcrypt') &&
in_array($this->cipher_name_mcrypt, mcrypt_list_algorithms());
restore_error_handler();
return $result;
case self::ENGINE_INTERNAL:
return true;
}
return false;
}
/**
* Sets the preferred crypt engine
*
* Currently, $engine could be:
*
* - \phpseclib\Crypt\Base::ENGINE_OPENSSL [very fast]
*
* - \phpseclib\Crypt\Base::ENGINE_MCRYPT [fast]
*
* - \phpseclib\Crypt\Base::ENGINE_INTERNAL [slow]
*
* If the preferred crypt engine is not available the fastest available one will be used
*
* @see self::__construct()
* @param int $engine
* @access public
*/
function setPreferredEngine($engine)
{
switch ($engine) {
//case self::ENGINE_OPENSSL;
case self::ENGINE_MCRYPT:
case self::ENGINE_INTERNAL:
$this->preferredEngine = $engine;
break;
default:
$this->preferredEngine = self::ENGINE_OPENSSL;
}
$this->_setEngine();
}
/**
* Returns the engine currently being utilized
*
* @see self::_setEngine()
* @access public
*/
function getEngine()
{
return $this->engine;
}
/**
* Sets the engine as appropriate
*
* @see self::__construct()
* @access private
*/
function _setEngine()
{
$this->engine = null;
$candidateEngines = array(
$this->preferredEngine,
self::ENGINE_OPENSSL,
self::ENGINE_MCRYPT
);
foreach ($candidateEngines as $engine) {
if ($this->isValidEngine($engine)) {
$this->engine = $engine;
break;
}
}
if (!$this->engine) {
$this->engine = self::ENGINE_INTERNAL;
}
if ($this->engine != self::ENGINE_MCRYPT && $this->enmcrypt) {
set_error_handler(array($this, 'do_nothing'));
// Closing the current mcrypt resource(s). _mcryptSetup() will, if needed,
// (re)open them with the module named in $this->cipher_name_mcrypt
mcrypt_module_close($this->enmcrypt);
mcrypt_module_close($this->demcrypt);
$this->enmcrypt = null;
$this->demcrypt = null;
if ($this->ecb) {
mcrypt_module_close($this->ecb);
$this->ecb = null;
}
restore_error_handler();
}
$this->changed = true;
}
/**
* Encrypts a block
*
* Note: Must be extended by the child \phpseclib\Crypt\* class
*
* @access private
* @param string $in
* @return string
*/
abstract function _encryptBlock($in);
/**
* Decrypts a block
*
* Note: Must be extended by the child \phpseclib\Crypt\* class
*
* @access private
* @param string $in
* @return string
*/
abstract function _decryptBlock($in);
/**
* Setup the key (expansion)
*
* Only used if $engine == self::ENGINE_INTERNAL
*
* Note: Must extend by the child \phpseclib\Crypt\* class
*
* @see self::_setup()
* @access private
*/
abstract function _setupKey();
/**
* Setup the self::ENGINE_INTERNAL $engine
*
* (re)init, if necessary, the internal cipher $engine and flush all $buffers
* Used (only) if $engine == self::ENGINE_INTERNAL
*
* _setup() will be called each time if $changed === true
* typically this happens when using one or more of following public methods:
*
* - setKey()
*
* - setIV()
*
* - disableContinuousBuffer()
*
* - First run of encrypt() / decrypt() with no init-settings
*
* @see self::setKey()
* @see self::setIV()
* @see self::disableContinuousBuffer()
* @access private
* @internal _setup() is always called before en/decryption.
* @internal Could, but not must, extend by the child Crypt_* class
*/
function _setup()
{
$this->_clearBuffers();
$this->_setupKey();
if ($this->use_inline_crypt) {
$this->_setupInlineCrypt();
}
}
/**
* Setup the self::ENGINE_MCRYPT $engine
*
* (re)init, if necessary, the (ext)mcrypt resources and flush all $buffers
* Used (only) if $engine = self::ENGINE_MCRYPT
*
* _setupMcrypt() will be called each time if $changed === true
* typically this happens when using one or more of following public methods:
*
* - setKey()
*
* - setIV()
*
* - disableContinuousBuffer()
*
* - First run of encrypt() / decrypt()
*
* @see self::setKey()
* @see self::setIV()
* @see self::disableContinuousBuffer()
* @access private
* @internal Could, but not must, extend by the child Crypt_* class
*/
function _setupMcrypt()
{
$this->_clearBuffers();
$this->enchanged = $this->dechanged = true;
if (!isset($this->enmcrypt)) {
static $mcrypt_modes = array(
self::MODE_CTR => 'ctr',
self::MODE_ECB => MCRYPT_MODE_ECB,
self::MODE_CBC => MCRYPT_MODE_CBC,
self::MODE_CFB => 'ncfb',
self::MODE_CFB8 => MCRYPT_MODE_CFB,
self::MODE_OFB => MCRYPT_MODE_NOFB,
self::MODE_OFB8 => MCRYPT_MODE_OFB,
self::MODE_STREAM => MCRYPT_MODE_STREAM,
);
$this->demcrypt = mcrypt_module_open($this->cipher_name_mcrypt, '', $mcrypt_modes[$this->mode], '');
$this->enmcrypt = mcrypt_module_open($this->cipher_name_mcrypt, '', $mcrypt_modes[$this->mode], '');
// we need the $ecb mcrypt resource (only) in MODE_CFB with enableContinuousBuffer()
// to workaround mcrypt's broken ncfb implementation in buffered mode
// see: {@link http://phpseclib.sourceforge.net/cfb-demo.phps}
if ($this->mode == self::MODE_CFB) {
$this->ecb = mcrypt_module_open($this->cipher_name_mcrypt, '', MCRYPT_MODE_ECB, '');
}
} // else should mcrypt_generic_deinit be called?
if ($this->mode == self::MODE_CFB) {
mcrypt_generic_init($this->ecb, $this->key, str_repeat("\0", $this->block_size));
}
}
/**
* Pads a string
*
* Pads a string using the RSA PKCS padding standards so that its length is a multiple of the blocksize.
* $this->block_size - (strlen($text) % $this->block_size) bytes are added, each of which is equal to
* chr($this->block_size - (strlen($text) % $this->block_size)
*
* If padding is disabled and $text is not a multiple of the blocksize, the string will be padded regardless
* and padding will, hence forth, be enabled.
*
* @see self::_unpad()
* @param string $text
* @access private
* @return string
*/
function _pad($text)
{
$length = strlen($text);
if (!$this->padding) {
if ($length % $this->block_size == 0) {
return $text;
} else {
user_error("The plaintext's length ($length) is not a multiple of the block size ({$this->block_size})");
$this->padding = true;
}
}
$pad = $this->block_size - ($length % $this->block_size);
return str_pad($text, $length + $pad, chr($pad));
}
/**
* Unpads a string.
*
* If padding is enabled and the reported padding length is invalid the encryption key will be assumed to be wrong
* and false will be returned.
*
* @see self::_pad()
* @param string $text
* @access private
* @return string
*/
function _unpad($text)
{
if (!$this->padding) {
return $text;
}
$length = ord($text[strlen($text) - 1]);
if (!$length || $length > $this->block_size) {
return false;
}
return substr($text, 0, -$length);
}
/**
* Clears internal buffers
*
* Clearing/resetting the internal buffers is done everytime
* after disableContinuousBuffer() or on cipher $engine (re)init
* ie after setKey() or setIV()
*
* @access public
* @internal Could, but not must, extend by the child Crypt_* class
*/
function _clearBuffers()
{
$this->enbuffer = $this->debuffer = array('ciphertext' => '', 'xor' => '', 'pos' => 0, 'enmcrypt_init' => true);
// mcrypt's handling of invalid's $iv:
// $this->encryptIV = $this->decryptIV = strlen($this->iv) == $this->block_size ? $this->iv : str_repeat("\0", $this->block_size);
$this->encryptIV = $this->decryptIV = str_pad(substr($this->iv, 0, $this->block_size), $this->block_size, "\0");
if (!$this->skip_key_adjustment) {
$this->key = str_pad(substr($this->key, 0, $this->key_length), $this->key_length, "\0");
}
}
/**
* String Shift
*
* Inspired by array_shift
*
* @param string $string
* @param int $index
* @access private
* @return string
*/
function _string_shift(&$string, $index = 1)
{
$substr = substr($string, 0, $index);
$string = substr($string, $index);
return $substr;
}
/**
* String Pop
*
* Inspired by array_pop
*
* @param string $string
* @param int $index
* @access private
* @return string
*/
function _string_pop(&$string, $index = 1)
{
$substr = substr($string, -$index);
$string = substr($string, 0, -$index);
return $substr;
}
/**
* Increment the current string
*
* @see self::decrypt()
* @see self::encrypt()
* @param string $var
* @access private
*/
function _increment_str(&$var)
{
if (function_exists('sodium_increment')) {
$var = strrev($var);
sodium_increment($var);
$var = strrev($var);
return;
}
for ($i = 4; $i <= strlen($var); $i+= 4) {
$temp = substr($var, -$i, 4);
switch ($temp) {
case "\xFF\xFF\xFF\xFF":
$var = substr_replace($var, "\x00\x00\x00\x00", -$i, 4);
break;
case "\x7F\xFF\xFF\xFF":
$var = substr_replace($var, "\x80\x00\x00\x00", -$i, 4);
return;
default:
$temp = unpack('Nnum', $temp);
$var = substr_replace($var, pack('N', $temp['num'] + 1), -$i, 4);
return;
}
}
$remainder = strlen($var) % 4;
if ($remainder == 0) {
return;
}
$temp = unpack('Nnum', str_pad(substr($var, 0, $remainder), 4, "\0", STR_PAD_LEFT));
$temp = substr(pack('N', $temp['num'] + 1), -$remainder);
$var = substr_replace($var, $temp, 0, $remainder);
}
/**
* Setup the performance-optimized function for de/encrypt()
*
* Stores the created (or existing) callback function-name
* in $this->inline_crypt
*
* Internally for phpseclib developers:
*
* _setupInlineCrypt() would be called only if:
*
* - $engine == self::ENGINE_INTERNAL and
*
* - $use_inline_crypt === true
*
* - each time on _setup(), after(!) _setupKey()
*
*
* This ensures that _setupInlineCrypt() has always a
* full ready2go initializated internal cipher $engine state
* where, for example, the keys allready expanded,
* keys/block_size calculated and such.
*
* It is, each time if called, the responsibility of _setupInlineCrypt():
*
* - to set $this->inline_crypt to a valid and fully working callback function
* as a (faster) replacement for encrypt() / decrypt()
*
* - NOT to create unlimited callback functions (for memory reasons!)
* no matter how often _setupInlineCrypt() would be called. At some
* point of amount they must be generic re-useable.
*
* - the code of _setupInlineCrypt() it self,
* and the generated callback code,
* must be, in following order:
* - 100% safe
* - 100% compatible to encrypt()/decrypt()
* - using only php5+ features/lang-constructs/php-extensions if
* compatibility (down to php4) or fallback is provided
* - readable/maintainable/understandable/commented and... not-cryptic-styled-code :-)
* - >= 10% faster than encrypt()/decrypt() [which is, by the way,
* the reason for the existence of _setupInlineCrypt() :-)]
* - memory-nice
* - short (as good as possible)
*
* Note: - _setupInlineCrypt() is using _createInlineCryptFunction() to create the full callback function code.
* - In case of using inline crypting, _setupInlineCrypt() must extend by the child \phpseclib\Crypt\* class.
* - The following variable names are reserved:
* - $_* (all variable names prefixed with an underscore)
* - $self (object reference to it self. Do not use $this, but $self instead)
* - $in (the content of $in has to en/decrypt by the generated code)
* - The callback function should not use the 'return' statement, but en/decrypt'ing the content of $in only
*
*
* @see self::_setup()
* @see self::_createInlineCryptFunction()
* @see self::encrypt()
* @see self::decrypt()
* @access private
* @internal If a Crypt_* class providing inline crypting it must extend _setupInlineCrypt()
*/
function _setupInlineCrypt()
{
// If, for any reason, an extending \phpseclib\Crypt\Base() \phpseclib\Crypt\* class
// not using inline crypting then it must be ensured that: $this->use_inline_crypt = false
// ie in the class var declaration of $use_inline_crypt in general for the \phpseclib\Crypt\* class,
// in the constructor at object instance-time
// or, if it's runtime-specific, at runtime
$this->use_inline_crypt = false;
}
/**
* Creates the performance-optimized function for en/decrypt()
*
* Internally for phpseclib developers:
*
* _createInlineCryptFunction():
*
* - merge the $cipher_code [setup'ed by _setupInlineCrypt()]
* with the current [$this->]mode of operation code
*
* - create the $inline function, which called by encrypt() / decrypt()
* as its replacement to speed up the en/decryption operations.
*
* - return the name of the created $inline callback function
*
* - used to speed up en/decryption
*
*
*
* The main reason why can speed up things [up to 50%] this way are:
*
* - using variables more effective then regular.
* (ie no use of expensive arrays but integers $k_0, $k_1 ...
* or even, for example, the pure $key[] values hardcoded)
*
* - avoiding 1000's of function calls of ie _encryptBlock()
* but inlining the crypt operations.
* in the mode of operation for() loop.
*
* - full loop unroll the (sometimes key-dependent) rounds
* avoiding this way ++$i counters and runtime-if's etc...
*
* The basic code architectur of the generated $inline en/decrypt()
* lambda function, in pseudo php, is:
*
* <code>
* +----------------------------------------------------------------------------------------------+
* | callback $inline = create_function: |
* | lambda_function_0001_crypt_ECB($action, $text) |
* | { |
* | INSERT PHP CODE OF: |
* | $cipher_code['init_crypt']; // general init code. |
* | // ie: $sbox'es declarations used for |
* | // encrypt and decrypt'ing. |
* | |
* | switch ($action) { |
* | case 'encrypt': |
* | INSERT PHP CODE OF: |
* | $cipher_code['init_encrypt']; // encrypt sepcific init code. |
* | ie: specified $key or $box |
* | declarations for encrypt'ing. |
* | |
* | foreach ($ciphertext) { |
* | $in = $block_size of $ciphertext; |
* | |
* | INSERT PHP CODE OF: |
* | $cipher_code['encrypt_block']; // encrypt's (string) $in, which is always: |
* | // strlen($in) == $this->block_size |
* | // here comes the cipher algorithm in action |
* | // for encryption. |
* | // $cipher_code['encrypt_block'] has to |
* | // encrypt the content of the $in variable |
* | |
* | $plaintext .= $in; |
* | } |
* | return $plaintext; |
* | |
* | case 'decrypt': |
* | INSERT PHP CODE OF: |
* | $cipher_code['init_decrypt']; // decrypt sepcific init code |
* | ie: specified $key or $box |
* | declarations for decrypt'ing. |
* | foreach ($plaintext) { |
* | $in = $block_size of $plaintext; |
* | |
* | INSERT PHP CODE OF: |
* | $cipher_code['decrypt_block']; // decrypt's (string) $in, which is always |
* | // strlen($in) == $this->block_size |
* | // here comes the cipher algorithm in action |
* | // for decryption. |
* | // $cipher_code['decrypt_block'] has to |
* | // decrypt the content of the $in variable |
* | $ciphertext .= $in; |
* | } |
* | return $ciphertext; |
* | } |
* | } |
* +----------------------------------------------------------------------------------------------+
* </code>
*
* See also the \phpseclib\Crypt\*::_setupInlineCrypt()'s for
* productive inline $cipher_code's how they works.
*
* Structure of:
* <code>
* $cipher_code = array(
* 'init_crypt' => (string) '', // optional
* 'init_encrypt' => (string) '', // optional
* 'init_decrypt' => (string) '', // optional
* 'encrypt_block' => (string) '', // required
* 'decrypt_block' => (string) '' // required
* );
* </code>
*
* @see self::_setupInlineCrypt()
* @see self::encrypt()
* @see self::decrypt()
* @param array $cipher_code
* @access private
* @return string (the name of the created callback function)
*/
function _createInlineCryptFunction($cipher_code)
{
$block_size = $this->block_size;
// optional
$init_crypt = isset($cipher_code['init_crypt']) ? $cipher_code['init_crypt'] : '';
$init_encrypt = isset($cipher_code['init_encrypt']) ? $cipher_code['init_encrypt'] : '';
$init_decrypt = isset($cipher_code['init_decrypt']) ? $cipher_code['init_decrypt'] : '';
// required
$encrypt_block = $cipher_code['encrypt_block'];
$decrypt_block = $cipher_code['decrypt_block'];
// Generating mode of operation inline code,
// merged with the $cipher_code algorithm
// for encrypt- and decryption.
switch ($this->mode) {
case self::MODE_ECB:
$encrypt = $init_encrypt . '
$_ciphertext = "";
$_plaintext_len = strlen($_text);
for ($_i = 0; $_i < $_plaintext_len; $_i+= '.$block_size.') {
$in = substr($_text, $_i, '.$block_size.');
'.$encrypt_block.'
$_ciphertext.= $in;
}
return $_ciphertext;
';
$decrypt = $init_decrypt . '
$_plaintext = "";
$_text = str_pad($_text, strlen($_text) + ('.$block_size.' - strlen($_text) % '.$block_size.') % '.$block_size.', chr(0));
$_ciphertext_len = strlen($_text);
for ($_i = 0; $_i < $_ciphertext_len; $_i+= '.$block_size.') {
$in = substr($_text, $_i, '.$block_size.');
'.$decrypt_block.'
$_plaintext.= $in;
}
return $self->_unpad($_plaintext);
';
break;
case self::MODE_CTR:
$encrypt = $init_encrypt . '
$_ciphertext = "";
$_plaintext_len = strlen($_text);
$_xor = $self->encryptIV;
$_buffer = &$self->enbuffer;
if (strlen($_buffer["ciphertext"])) {
for ($_i = 0; $_i < $_plaintext_len; $_i+= '.$block_size.') {
$_block = substr($_text, $_i, '.$block_size.');
if (strlen($_block) > strlen($_buffer["ciphertext"])) {
$in = $_xor;
'.$encrypt_block.'
$self->_increment_str($_xor);
$_buffer["ciphertext"].= $in;
}
$_key = $self->_string_shift($_buffer["ciphertext"], '.$block_size.');
$_ciphertext.= $_block ^ $_key;
}
} else {
for ($_i = 0; $_i < $_plaintext_len; $_i+= '.$block_size.') {
$_block = substr($_text, $_i, '.$block_size.');
$in = $_xor;
'.$encrypt_block.'
$self->_increment_str($_xor);
$_key = $in;
$_ciphertext.= $_block ^ $_key;
}
}
if ($self->continuousBuffer) {
$self->encryptIV = $_xor;
if ($_start = $_plaintext_len % '.$block_size.') {
$_buffer["ciphertext"] = substr($_key, $_start) . $_buffer["ciphertext"];
}
}
return $_ciphertext;
';
$decrypt = $init_encrypt . '
$_plaintext = "";
$_ciphertext_len = strlen($_text);
$_xor = $self->decryptIV;
$_buffer = &$self->debuffer;
if (strlen($_buffer["ciphertext"])) {
for ($_i = 0; $_i < $_ciphertext_len; $_i+= '.$block_size.') {
$_block = substr($_text, $_i, '.$block_size.');
if (strlen($_block) > strlen($_buffer["ciphertext"])) {
$in = $_xor;
'.$encrypt_block.'
$self->_increment_str($_xor);
$_buffer["ciphertext"].= $in;
}
$_key = $self->_string_shift($_buffer["ciphertext"], '.$block_size.');
$_plaintext.= $_block ^ $_key;
}
} else {
for ($_i = 0; $_i < $_ciphertext_len; $_i+= '.$block_size.') {
$_block = substr($_text, $_i, '.$block_size.');
$in = $_xor;
'.$encrypt_block.'
$self->_increment_str($_xor);
$_key = $in;
$_plaintext.= $_block ^ $_key;
}
}
if ($self->continuousBuffer) {
$self->decryptIV = $_xor;
if ($_start = $_ciphertext_len % '.$block_size.') {
$_buffer["ciphertext"] = substr($_key, $_start) . $_buffer["ciphertext"];
}
}
return $_plaintext;
';
break;
case self::MODE_CFB:
$encrypt = $init_encrypt . '
$_ciphertext = "";
$_buffer = &$self->enbuffer;
if ($self->continuousBuffer) {
$_iv = &$self->encryptIV;
$_pos = &$_buffer["pos"];
} else {
$_iv = $self->encryptIV;
$_pos = 0;
}
$_len = strlen($_text);
$_i = 0;
if ($_pos) {
$_orig_pos = $_pos;
$_max = '.$block_size.' - $_pos;
if ($_len >= $_max) {
$_i = $_max;
$_len-= $_max;
$_pos = 0;
} else {
$_i = $_len;
$_pos+= $_len;
$_len = 0;
}
$_ciphertext = substr($_iv, $_orig_pos) ^ $_text;
$_iv = substr_replace($_iv, $_ciphertext, $_orig_pos, $_i);
}
while ($_len >= '.$block_size.') {
$in = $_iv;
'.$encrypt_block.';
$_iv = $in ^ substr($_text, $_i, '.$block_size.');
$_ciphertext.= $_iv;
$_len-= '.$block_size.';
$_i+= '.$block_size.';
}
if ($_len) {
$in = $_iv;
'.$encrypt_block.'
$_iv = $in;
$_block = $_iv ^ substr($_text, $_i);
$_iv = substr_replace($_iv, $_block, 0, $_len);
$_ciphertext.= $_block;
$_pos = $_len;
}
return $_ciphertext;
';
$decrypt = $init_encrypt . '
$_plaintext = "";
$_buffer = &$self->debuffer;
if ($self->continuousBuffer) {
$_iv = &$self->decryptIV;
$_pos = &$_buffer["pos"];
} else {
$_iv = $self->decryptIV;
$_pos = 0;
}
$_len = strlen($_text);
$_i = 0;
if ($_pos) {
$_orig_pos = $_pos;
$_max = '.$block_size.' - $_pos;
if ($_len >= $_max) {
$_i = $_max;
$_len-= $_max;
$_pos = 0;
} else {
$_i = $_len;
$_pos+= $_len;
$_len = 0;
}
$_plaintext = substr($_iv, $_orig_pos) ^ $_text;
$_iv = substr_replace($_iv, substr($_text, 0, $_i), $_orig_pos, $_i);
}
while ($_len >= '.$block_size.') {
$in = $_iv;
'.$encrypt_block.'
$_iv = $in;
$cb = substr($_text, $_i, '.$block_size.');
$_plaintext.= $_iv ^ $cb;
$_iv = $cb;
$_len-= '.$block_size.';
$_i+= '.$block_size.';
}
if ($_len) {
$in = $_iv;
'.$encrypt_block.'
$_iv = $in;
$_plaintext.= $_iv ^ substr($_text, $_i);
$_iv = substr_replace($_iv, substr($_text, $_i), 0, $_len);
$_pos = $_len;
}
return $_plaintext;
';
break;
case self::MODE_CFB8:
$encrypt = $init_encrypt . '
$_ciphertext = "";
$_len = strlen($_text);
$_iv = $self->encryptIV;
for ($_i = 0; $_i < $_len; ++$_i) {
$in = $_iv;
'.$encrypt_block.'
$_ciphertext.= ($_c = $_text[$_i] ^ $in);
$_iv = substr($_iv, 1) . $_c;
}
if ($self->continuousBuffer) {
if ($_len >= '.$block_size.') {
$self->encryptIV = substr($_ciphertext, -'.$block_size.');
} else {
$self->encryptIV = substr($self->encryptIV, $_len - '.$block_size.') . substr($_ciphertext, -$_len);
}
}
return $_ciphertext;
';
$decrypt = $init_encrypt . '
$_plaintext = "";
$_len = strlen($_text);
$_iv = $self->decryptIV;
for ($_i = 0; $_i < $_len; ++$_i) {
$in = $_iv;
'.$encrypt_block.'
$_plaintext.= $_text[$_i] ^ $in;
$_iv = substr($_iv, 1) . $_text[$_i];
}
if ($self->continuousBuffer) {
if ($_len >= '.$block_size.') {
$self->decryptIV = substr($_text, -'.$block_size.');
} else {
$self->decryptIV = substr($self->decryptIV, $_len - '.$block_size.') . substr($_text, -$_len);
}
}
return $_plaintext;
';
break;
case self::MODE_OFB8:
$encrypt = $init_encrypt . '
$_ciphertext = "";
$_len = strlen($_text);
$_iv = $self->encryptIV;
for ($_i = 0; $_i < $_len; ++$_i) {
$in = $_iv;
'.$encrypt_block.'
$_ciphertext.= $_text[$_i] ^ $in;
$_iv = substr($_iv, 1) . $in[0];
}
if ($self->continuousBuffer) {
$self->encryptIV = $_iv;
}
return $_ciphertext;
';
$decrypt = $init_encrypt . '
$_plaintext = "";
$_len = strlen($_text);
$_iv = $self->decryptIV;
for ($_i = 0; $_i < $_len; ++$_i) {
$in = $_iv;
'.$encrypt_block.'
$_plaintext.= $_text[$_i] ^ $in;
$_iv = substr($_iv, 1) . $in[0];
}
if ($self->continuousBuffer) {
$self->decryptIV = $_iv;
}
return $_plaintext;
';
break;
case self::MODE_OFB:
$encrypt = $init_encrypt . '
$_ciphertext = "";
$_plaintext_len = strlen($_text);
$_xor = $self->encryptIV;
$_buffer = &$self->enbuffer;
if (strlen($_buffer["xor"])) {
for ($_i = 0; $_i < $_plaintext_len; $_i+= '.$block_size.') {
$_block = substr($_text, $_i, '.$block_size.');
if (strlen($_block) > strlen($_buffer["xor"])) {
$in = $_xor;
'.$encrypt_block.'
$_xor = $in;
$_buffer["xor"].= $_xor;
}
$_key = $self->_string_shift($_buffer["xor"], '.$block_size.');
$_ciphertext.= $_block ^ $_key;
}
} else {
for ($_i = 0; $_i < $_plaintext_len; $_i+= '.$block_size.') {
$in = $_xor;
'.$encrypt_block.'
$_xor = $in;
$_ciphertext.= substr($_text, $_i, '.$block_size.') ^ $_xor;
}
$_key = $_xor;
}
if ($self->continuousBuffer) {
$self->encryptIV = $_xor;
if ($_start = $_plaintext_len % '.$block_size.') {
$_buffer["xor"] = substr($_key, $_start) . $_buffer["xor"];
}
}
return $_ciphertext;
';
$decrypt = $init_encrypt . '
$_plaintext = "";
$_ciphertext_len = strlen($_text);
$_xor = $self->decryptIV;
$_buffer = &$self->debuffer;
if (strlen($_buffer["xor"])) {
for ($_i = 0; $_i < $_ciphertext_len; $_i+= '.$block_size.') {
$_block = substr($_text, $_i, '.$block_size.');
if (strlen($_block) > strlen($_buffer["xor"])) {
$in = $_xor;
'.$encrypt_block.'
$_xor = $in;
$_buffer["xor"].= $_xor;
}
$_key = $self->_string_shift($_buffer["xor"], '.$block_size.');
$_plaintext.= $_block ^ $_key;
}
} else {
for ($_i = 0; $_i < $_ciphertext_len; $_i+= '.$block_size.') {
$in = $_xor;
'.$encrypt_block.'
$_xor = $in;
$_plaintext.= substr($_text, $_i, '.$block_size.') ^ $_xor;
}
$_key = $_xor;
}
if ($self->continuousBuffer) {
$self->decryptIV = $_xor;
if ($_start = $_ciphertext_len % '.$block_size.') {
$_buffer["xor"] = substr($_key, $_start) . $_buffer["xor"];
}
}
return $_plaintext;
';
break;
case self::MODE_STREAM:
$encrypt = $init_encrypt . '
$_ciphertext = "";
'.$encrypt_block.'
return $_ciphertext;
';
$decrypt = $init_decrypt . '
$_plaintext = "";
'.$decrypt_block.'
return $_plaintext;
';
break;
// case self::MODE_CBC:
default:
$encrypt = $init_encrypt . '
$_ciphertext = "";
$_plaintext_len = strlen($_text);
$in = $self->encryptIV;
for ($_i = 0; $_i < $_plaintext_len; $_i+= '.$block_size.') {
$in = substr($_text, $_i, '.$block_size.') ^ $in;
'.$encrypt_block.'
$_ciphertext.= $in;
}
if ($self->continuousBuffer) {
$self->encryptIV = $in;
}
return $_ciphertext;
';
$decrypt = $init_decrypt . '
$_plaintext = "";
$_text = str_pad($_text, strlen($_text) + ('.$block_size.' - strlen($_text) % '.$block_size.') % '.$block_size.', chr(0));
$_ciphertext_len = strlen($_text);
$_iv = $self->decryptIV;
for ($_i = 0; $_i < $_ciphertext_len; $_i+= '.$block_size.') {
$in = $_block = substr($_text, $_i, '.$block_size.');
'.$decrypt_block.'
$_plaintext.= $in ^ $_iv;
$_iv = $_block;
}
if ($self->continuousBuffer) {
$self->decryptIV = $_iv;
}
return $self->_unpad($_plaintext);
';
break;
}
// Create the $inline function and return its name as string. Ready to run!
eval('$func = function ($_action, &$self, $_text) { ' . $init_crypt . 'if ($_action == "encrypt") { ' . $encrypt . ' } else { ' . $decrypt . ' } };');
return $func;
}
/**
* Holds the lambda_functions table (classwide)
*
* Each name of the lambda function, created from
* _setupInlineCrypt() && _createInlineCryptFunction()
* is stored, classwide (!), here for reusing.
*
* The string-based index of $function is a classwide
* unique value representing, at least, the $mode of
* operation (or more... depends of the optimizing level)
* for which $mode the lambda function was created.
*
* @access private
* @return array &$functions
*/
function &_getLambdaFunctions()
{
static $functions = array();
return $functions;
}
/**
* Generates a digest from $bytes
*
* @see self::_setupInlineCrypt()
* @access private
* @param string $bytes
* @return string
*/
function _hashInlineCryptFunction($bytes)
{
if (!isset(self::$WHIRLPOOL_AVAILABLE)) {
self::$WHIRLPOOL_AVAILABLE = extension_loaded('hash') && in_array('whirlpool', hash_algos());
}
$result = '';
$hash = $bytes;
switch (true) {
case self::$WHIRLPOOL_AVAILABLE:
foreach (str_split($bytes, 64) as $t) {
$hash = hash('whirlpool', $hash, true);
$result .= $t ^ $hash;
}
return $result . hash('whirlpool', $hash, true);
default:
$len = strlen($bytes);
for ($i = 0; $i < $len; $i+=20) {
$t = substr($bytes, $i, 20);
$hash = pack('H*', sha1($hash));
$result .= $t ^ $hash;
}
return $result . pack('H*', sha1($hash));
}
}
/**
* Convert float to int
*
* On ARM CPUs converting floats to ints doesn't always work
*
* @access private
* @param string $x
* @return int
*/
function safe_intval($x)
{
if (is_int($x)) {
return $x;
}
return (fmod($x, 0x80000000) & 0x7FFFFFFF) |
((fmod(floor($x / 0x80000000), 2) & 1) << 31);
}
/**
* eval()'able string for in-line float to int
*
* @access private
* @return string
*/
function safe_intval_inline()
{
if (CRYPT_BASE_USE_REG_INTVAL) {
return PHP_INT_SIZE == 4 ? 'intval(%s)' : '%s';
}
$safeint = '(is_int($temp = %s) ? $temp : (fmod($temp, 0x80000000) & 0x7FFFFFFF) | ';
return $safeint . '((fmod(floor($temp / 0x80000000), 2) & 1) << 31))';
}
/**
* Dummy error handler to suppress mcrypt errors
*
* @access private
*/
function do_nothing()
{
}
}
PK ��$Z��%�2" 2" ! phpseclib/phpseclib/Crypt/RC4.phpnu �[��� <?php
/**
* Pure-PHP implementation of RC4.
*
* Uses mcrypt, if available, and an internal implementation, otherwise.
*
* PHP version 5
*
* Useful resources are as follows:
*
* - {@link http://www.mozilla.org/projects/security/pki/nss/draft-kaukonen-cipher-arcfour-03.txt ARCFOUR Algorithm}
* - {@link http://en.wikipedia.org/wiki/RC4 - Wikipedia: RC4}
*
* RC4 is also known as ARCFOUR or ARC4. The reason is elaborated upon at Wikipedia. This class is named RC4 and not
* ARCFOUR or ARC4 because RC4 is how it is referred to in the SSH1 specification.
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $rc4 = new \phpseclib\Crypt\RC4();
*
* $rc4->setKey('abcdefgh');
*
* $size = 10 * 1024;
* $plaintext = '';
* for ($i = 0; $i < $size; $i++) {
* $plaintext.= 'a';
* }
*
* echo $rc4->decrypt($rc4->encrypt($plaintext));
* ?>
* </code>
*
* @category Crypt
* @package RC4
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2007 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt;
/**
* Pure-PHP implementation of RC4.
*
* @package RC4
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class RC4 extends Base
{
/**#@+
* @access private
* @see \phpseclib\Crypt\RC4::_crypt()
*/
const ENCRYPT = 0;
const DECRYPT = 1;
/**#@-*/
/**
* Block Length of the cipher
*
* RC4 is a stream cipher
* so we the block_size to 0
*
* @see \phpseclib\Crypt\Base::block_size
* @var int
* @access private
*/
var $block_size = 0;
/**
* Key Length (in bytes)
*
* @see \phpseclib\Crypt\RC4::setKeyLength()
* @var int
* @access private
*/
var $key_length = 128; // = 1024 bits
/**
* The mcrypt specific name of the cipher
*
* @see \phpseclib\Crypt\Base::cipher_name_mcrypt
* @var string
* @access private
*/
var $cipher_name_mcrypt = 'arcfour';
/**
* Holds whether performance-optimized $inline_crypt() can/should be used.
*
* @see \phpseclib\Crypt\Base::inline_crypt
* @var mixed
* @access private
*/
var $use_inline_crypt = false; // currently not available
/**
* The Key
*
* @see self::setKey()
* @var string
* @access private
*/
var $key;
/**
* The Key Stream for decryption and encryption
*
* @see self::setKey()
* @var array
* @access private
*/
var $stream;
/**
* Default Constructor.
*
* Determines whether or not the mcrypt extension should be used.
*
* @see \phpseclib\Crypt\Base::__construct()
* @return \phpseclib\Crypt\RC4
* @access public
*/
function __construct()
{
parent::__construct(Base::MODE_STREAM);
}
/**
* Test for engine validity
*
* This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
*
* @see \phpseclib\Crypt\Base::__construct()
* @param int $engine
* @access public
* @return bool
*/
function isValidEngine($engine)
{
if ($engine == Base::ENGINE_OPENSSL) {
if (version_compare(PHP_VERSION, '5.3.7') >= 0) {
$this->cipher_name_openssl = 'rc4-40';
} else {
switch (strlen($this->key)) {
case 5:
$this->cipher_name_openssl = 'rc4-40';
break;
case 8:
$this->cipher_name_openssl = 'rc4-64';
break;
case 16:
$this->cipher_name_openssl = 'rc4';
break;
default:
return false;
}
}
}
return parent::isValidEngine($engine);
}
/**
* Dummy function.
*
* Some protocols, such as WEP, prepend an "initialization vector" to the key, effectively creating a new key [1].
* If you need to use an initialization vector in this manner, feel free to prepend it to the key, yourself, before
* calling setKey().
*
* [1] WEP's initialization vectors (IV's) are used in a somewhat insecure way. Since, in that protocol,
* the IV's are relatively easy to predict, an attack described by
* {@link http://www.drizzle.com/~aboba/IEEE/rc4_ksaproc.pdf Scott Fluhrer, Itsik Mantin, and Adi Shamir}
* can be used to quickly guess at the rest of the key. The following links elaborate:
*
* {@link http://www.rsa.com/rsalabs/node.asp?id=2009 http://www.rsa.com/rsalabs/node.asp?id=2009}
* {@link http://en.wikipedia.org/wiki/Related_key_attack http://en.wikipedia.org/wiki/Related_key_attack}
*
* @param string $iv
* @see self::setKey()
* @access public
*/
function setIV($iv)
{
}
/**
* Sets the key length
*
* Keys can be between 1 and 256 bytes long.
*
* @access public
* @param int $length
*/
function setKeyLength($length)
{
if ($length < 8) {
$this->key_length = 1;
} elseif ($length > 2048) {
$this->key_length = 256;
} else {
$this->key_length = $length >> 3;
}
parent::setKeyLength($length);
}
/**
* Encrypts a message.
*
* @see \phpseclib\Crypt\Base::decrypt()
* @see self::_crypt()
* @access public
* @param string $plaintext
* @return string $ciphertext
*/
function encrypt($plaintext)
{
if ($this->engine != Base::ENGINE_INTERNAL) {
return parent::encrypt($plaintext);
}
return $this->_crypt($plaintext, self::ENCRYPT);
}
/**
* Decrypts a message.
*
* $this->decrypt($this->encrypt($plaintext)) == $this->encrypt($this->encrypt($plaintext)).
* At least if the continuous buffer is disabled.
*
* @see \phpseclib\Crypt\Base::encrypt()
* @see self::_crypt()
* @access public
* @param string $ciphertext
* @return string $plaintext
*/
function decrypt($ciphertext)
{
if ($this->engine != Base::ENGINE_INTERNAL) {
return parent::decrypt($ciphertext);
}
return $this->_crypt($ciphertext, self::DECRYPT);
}
/**
* Encrypts a block
*
* @access private
* @param string $in
*/
function _encryptBlock($in)
{
// RC4 does not utilize this method
}
/**
* Decrypts a block
*
* @access private
* @param string $in
*/
function _decryptBlock($in)
{
// RC4 does not utilize this method
}
/**
* Setup the key (expansion)
*
* @see \phpseclib\Crypt\Base::_setupKey()
* @access private
*/
function _setupKey()
{
$key = $this->key;
$keyLength = strlen($key);
$keyStream = range(0, 255);
$j = 0;
for ($i = 0; $i < 256; $i++) {
$j = ($j + $keyStream[$i] + ord($key[$i % $keyLength])) & 255;
$temp = $keyStream[$i];
$keyStream[$i] = $keyStream[$j];
$keyStream[$j] = $temp;
}
$this->stream = array();
$this->stream[self::DECRYPT] = $this->stream[self::ENCRYPT] = array(
0, // index $i
0, // index $j
$keyStream
);
}
/**
* Encrypts or decrypts a message.
*
* @see self::encrypt()
* @see self::decrypt()
* @access private
* @param string $text
* @param int $mode
* @return string $text
*/
function _crypt($text, $mode)
{
if ($this->changed) {
$this->_setup();
$this->changed = false;
}
$stream = &$this->stream[$mode];
if ($this->continuousBuffer) {
$i = &$stream[0];
$j = &$stream[1];
$keyStream = &$stream[2];
} else {
$i = $stream[0];
$j = $stream[1];
$keyStream = $stream[2];
}
$len = strlen($text);
for ($k = 0; $k < $len; ++$k) {
$i = ($i + 1) & 255;
$ksi = $keyStream[$i];
$j = ($j + $ksi) & 255;
$ksj = $keyStream[$j];
$keyStream[$i] = $ksj;
$keyStream[$j] = $ksi;
$text[$k] = $text[$k] ^ chr($keyStream[($ksj + $ksi) & 255]);
}
return $text;
}
}
PK ��$Z�-��C� C� ! phpseclib/phpseclib/Crypt/RSA.phpnu �[��� <?php
/**
* Pure-PHP PKCS#1 (v2.1) compliant implementation of RSA.
*
* PHP version 5
*
* Here's an example of how to encrypt and decrypt text with this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $rsa = new \phpseclib\Crypt\RSA();
* extract($rsa->createKey());
*
* $plaintext = 'terrafrost';
*
* $rsa->loadKey($privatekey);
* $ciphertext = $rsa->encrypt($plaintext);
*
* $rsa->loadKey($publickey);
* echo $rsa->decrypt($ciphertext);
* ?>
* </code>
*
* Here's an example of how to create signatures and verify signatures with this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $rsa = new \phpseclib\Crypt\RSA();
* extract($rsa->createKey());
*
* $plaintext = 'terrafrost';
*
* $rsa->loadKey($privatekey);
* $signature = $rsa->sign($plaintext);
*
* $rsa->loadKey($publickey);
* echo $rsa->verify($plaintext, $signature) ? 'verified' : 'unverified';
* ?>
* </code>
*
* @category Crypt
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2009 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt;
use phpseclib\Math\BigInteger;
/**
* Pure-PHP PKCS#1 compliant implementation of RSA.
*
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class RSA
{
/**#@+
* @access public
* @see self::encrypt()
* @see self::decrypt()
*/
/**
* Use {@link http://en.wikipedia.org/wiki/Optimal_Asymmetric_Encryption_Padding Optimal Asymmetric Encryption Padding}
* (OAEP) for encryption / decryption.
*
* Uses sha1 by default.
*
* @see self::setHash()
* @see self::setMGFHash()
*/
const ENCRYPTION_OAEP = 1;
/**
* Use PKCS#1 padding.
*
* Although self::ENCRYPTION_OAEP offers more security, including PKCS#1 padding is necessary for purposes of backwards
* compatibility with protocols (like SSH-1) written before OAEP's introduction.
*/
const ENCRYPTION_PKCS1 = 2;
/**
* Do not use any padding
*
* Although this method is not recommended it can none-the-less sometimes be useful if you're trying to decrypt some legacy
* stuff, if you're trying to diagnose why an encrypted message isn't decrypting, etc.
*/
const ENCRYPTION_NONE = 3;
/**#@-*/
/**#@+
* @access public
* @see self::sign()
* @see self::verify()
* @see self::setHash()
*/
/**
* Use the Probabilistic Signature Scheme for signing
*
* Uses sha1 by default.
*
* @see self::setSaltLength()
* @see self::setMGFHash()
*/
const SIGNATURE_PSS = 1;
/**
* Use the PKCS#1 scheme by default.
*
* Although self::SIGNATURE_PSS offers more security, including PKCS#1 signing is necessary for purposes of backwards
* compatibility with protocols (like SSH-2) written before PSS's introduction.
*/
const SIGNATURE_PKCS1 = 2;
/**#@-*/
/**#@+
* @access private
* @see \phpseclib\Crypt\RSA::createKey()
*/
/**
* ASN1 Integer
*/
const ASN1_INTEGER = 2;
/**
* ASN1 Bit String
*/
const ASN1_BITSTRING = 3;
/**
* ASN1 Octet String
*/
const ASN1_OCTETSTRING = 4;
/**
* ASN1 Object Identifier
*/
const ASN1_OBJECT = 6;
/**
* ASN1 Sequence (with the constucted bit set)
*/
const ASN1_SEQUENCE = 48;
/**#@-*/
/**#@+
* @access private
* @see \phpseclib\Crypt\RSA::__construct()
*/
/**
* To use the pure-PHP implementation
*/
const MODE_INTERNAL = 1;
/**
* To use the OpenSSL library
*
* (if enabled; otherwise, the internal implementation will be used)
*/
const MODE_OPENSSL = 2;
/**#@-*/
/**#@+
* @access public
* @see \phpseclib\Crypt\RSA::createKey()
* @see \phpseclib\Crypt\RSA::setPrivateKeyFormat()
*/
/**
* PKCS#1 formatted private key
*
* Used by OpenSSH
*/
const PRIVATE_FORMAT_PKCS1 = 0;
/**
* PuTTY formatted private key
*/
const PRIVATE_FORMAT_PUTTY = 1;
/**
* XML formatted private key
*/
const PRIVATE_FORMAT_XML = 2;
/**
* PKCS#8 formatted private key
*/
const PRIVATE_FORMAT_PKCS8 = 8;
/**
* OpenSSH formatted private key
*/
const PRIVATE_FORMAT_OPENSSH = 9;
/**#@-*/
/**#@+
* @access public
* @see \phpseclib\Crypt\RSA::createKey()
* @see \phpseclib\Crypt\RSA::setPublicKeyFormat()
*/
/**
* Raw public key
*
* An array containing two \phpseclib\Math\BigInteger objects.
*
* The exponent can be indexed with any of the following:
*
* 0, e, exponent, publicExponent
*
* The modulus can be indexed with any of the following:
*
* 1, n, modulo, modulus
*/
const PUBLIC_FORMAT_RAW = 3;
/**
* PKCS#1 formatted public key (raw)
*
* Used by File/X509.php
*
* Has the following header:
*
* -----BEGIN RSA PUBLIC KEY-----
*
* Analogous to ssh-keygen's pem format (as specified by -m)
*/
const PUBLIC_FORMAT_PKCS1 = 4;
const PUBLIC_FORMAT_PKCS1_RAW = 4;
/**
* XML formatted public key
*/
const PUBLIC_FORMAT_XML = 5;
/**
* OpenSSH formatted public key
*
* Place in $HOME/.ssh/authorized_keys
*/
const PUBLIC_FORMAT_OPENSSH = 6;
/**
* PKCS#1 formatted public key (encapsulated)
*
* Used by PHP's openssl_public_encrypt() and openssl's rsautl (when -pubin is set)
*
* Has the following header:
*
* -----BEGIN PUBLIC KEY-----
*
* Analogous to ssh-keygen's pkcs8 format (as specified by -m). Although PKCS8
* is specific to private keys it's basically creating a DER-encoded wrapper
* for keys. This just extends that same concept to public keys (much like ssh-keygen)
*/
const PUBLIC_FORMAT_PKCS8 = 7;
/**#@-*/
/**
* Precomputed Zero
*
* @var \phpseclib\Math\BigInteger
* @access private
*/
var $zero;
/**
* Precomputed One
*
* @var \phpseclib\Math\BigInteger
* @access private
*/
var $one;
/**
* Private Key Format
*
* @var int
* @access private
*/
var $privateKeyFormat = self::PRIVATE_FORMAT_PKCS1;
/**
* Public Key Format
*
* @var int
* @access public
*/
var $publicKeyFormat = self::PUBLIC_FORMAT_PKCS8;
/**
* Modulus (ie. n)
*
* @var \phpseclib\Math\BigInteger
* @access private
*/
var $modulus;
/**
* Modulus length
*
* @var \phpseclib\Math\BigInteger
* @access private
*/
var $k;
/**
* Exponent (ie. e or d)
*
* @var \phpseclib\Math\BigInteger
* @access private
*/
var $exponent;
/**
* Primes for Chinese Remainder Theorem (ie. p and q)
*
* @var array
* @access private
*/
var $primes;
/**
* Exponents for Chinese Remainder Theorem (ie. dP and dQ)
*
* @var array
* @access private
*/
var $exponents;
/**
* Coefficients for Chinese Remainder Theorem (ie. qInv)
*
* @var array
* @access private
*/
var $coefficients;
/**
* Hash name
*
* @var string
* @access private
*/
var $hashName;
/**
* Hash function
*
* @var \phpseclib\Crypt\Hash
* @access private
*/
var $hash;
/**
* Length of hash function output
*
* @var int
* @access private
*/
var $hLen;
/**
* Length of salt
*
* @var int
* @access private
*/
var $sLen;
/**
* Hash function for the Mask Generation Function
*
* @var \phpseclib\Crypt\Hash
* @access private
*/
var $mgfHash;
/**
* Length of MGF hash function output
*
* @var int
* @access private
*/
var $mgfHLen;
/**
* Encryption mode
*
* @var int
* @access private
*/
var $encryptionMode = self::ENCRYPTION_OAEP;
/**
* Signature mode
*
* @var int
* @access private
*/
var $signatureMode = self::SIGNATURE_PSS;
/**
* Public Exponent
*
* @var mixed
* @access private
*/
var $publicExponent = false;
/**
* Password
*
* @var string
* @access private
*/
var $password = false;
/**
* Components
*
* For use with parsing XML formatted keys. PHP's XML Parser functions use utilized - instead of PHP's DOM functions -
* because PHP's XML Parser functions work on PHP4 whereas PHP's DOM functions - although surperior - don't.
*
* @see self::_start_element_handler()
* @var array
* @access private
*/
var $components = array();
/**
* Current String
*
* For use with parsing XML formatted keys.
*
* @see self::_character_handler()
* @see self::_stop_element_handler()
* @var mixed
* @access private
*/
var $current;
/**
* OpenSSL configuration file name.
*
* Set to null to use system configuration file.
* @see self::createKey()
* @var mixed
* @Access public
*/
var $configFile;
/**
* Public key comment field.
*
* @var string
* @access private
*/
var $comment = 'phpseclib-generated-key';
/**
* The constructor
*
* If you want to make use of the openssl extension, you'll need to set the mode manually, yourself. The reason
* \phpseclib\Crypt\RSA doesn't do it is because OpenSSL doesn't fail gracefully. openssl_pkey_new(), in particular, requires
* openssl.cnf be present somewhere and, unfortunately, the only real way to find out is too late.
*
* @return \phpseclib\Crypt\RSA
* @access public
*/
function __construct()
{
$this->configFile = dirname(__FILE__) . '/../openssl.cnf';
if (!defined('CRYPT_RSA_MODE')) {
switch (true) {
// Math/BigInteger's openssl requirements are a little less stringent than Crypt/RSA's. in particular,
// Math/BigInteger doesn't require an openssl.cfg file whereas Crypt/RSA does. so if Math/BigInteger
// can't use OpenSSL it can be pretty trivially assumed, then, that Crypt/RSA can't either.
case defined('MATH_BIGINTEGER_OPENSSL_DISABLE'):
define('CRYPT_RSA_MODE', self::MODE_INTERNAL);
break;
case function_exists('phpinfo') && extension_loaded('openssl') && file_exists($this->configFile):
// some versions of XAMPP have mismatched versions of OpenSSL which causes it not to work
$versions = array();
// avoid generating errors (even with suppression) when phpinfo() is disabled (common in production systems)
if (strpos(ini_get('disable_functions'), 'phpinfo') === false) {
ob_start();
@phpinfo();
$content = ob_get_contents();
ob_end_clean();
preg_match_all('#OpenSSL (Header|Library) Version(.*)#im', $content, $matches);
if (!empty($matches[1])) {
for ($i = 0; $i < count($matches[1]); $i++) {
$fullVersion = trim(str_replace('=>', '', strip_tags($matches[2][$i])));
// Remove letter part in OpenSSL version
if (!preg_match('/(\d+\.\d+\.\d+)/i', $fullVersion, $m)) {
$versions[$matches[1][$i]] = $fullVersion;
} else {
$versions[$matches[1][$i]] = $m[0];
}
}
}
}
// it doesn't appear that OpenSSL versions were reported upon until PHP 5.3+
switch (true) {
case !isset($versions['Header']):
case !isset($versions['Library']):
case $versions['Header'] == $versions['Library']:
case version_compare($versions['Header'], '1.0.0') >= 0 && version_compare($versions['Library'], '1.0.0') >= 0:
define('CRYPT_RSA_MODE', self::MODE_OPENSSL);
break;
default:
define('CRYPT_RSA_MODE', self::MODE_INTERNAL);
define('MATH_BIGINTEGER_OPENSSL_DISABLE', true);
}
break;
default:
define('CRYPT_RSA_MODE', self::MODE_INTERNAL);
}
}
$this->zero = new BigInteger();
$this->one = new BigInteger(1);
$this->hash = new Hash('sha1');
$this->hLen = $this->hash->getLength();
$this->hashName = 'sha1';
$this->mgfHash = new Hash('sha1');
$this->mgfHLen = $this->mgfHash->getLength();
}
/**
* Create public / private key pair
*
* Returns an array with the following three elements:
* - 'privatekey': The private key.
* - 'publickey': The public key.
* - 'partialkey': A partially computed key (if the execution time exceeded $timeout).
* Will need to be passed back to \phpseclib\Crypt\RSA::createKey() as the third parameter for further processing.
*
* @access public
* @param int $bits
* @param int $timeout
* @param array $partial
*/
function createKey($bits = 1024, $timeout = false, $partial = array())
{
if (!defined('CRYPT_RSA_EXPONENT')) {
// http://en.wikipedia.org/wiki/65537_%28number%29
define('CRYPT_RSA_EXPONENT', '65537');
}
// per <http://cseweb.ucsd.edu/~hovav/dist/survey.pdf#page=5>, this number ought not result in primes smaller
// than 256 bits. as a consequence if the key you're trying to create is 1024 bits and you've set CRYPT_RSA_SMALLEST_PRIME
// to 384 bits then you're going to get a 384 bit prime and a 640 bit prime (384 + 1024 % 384). at least if
// CRYPT_RSA_MODE is set to self::MODE_INTERNAL. if CRYPT_RSA_MODE is set to self::MODE_OPENSSL then
// CRYPT_RSA_SMALLEST_PRIME is ignored (ie. multi-prime RSA support is more intended as a way to speed up RSA key
// generation when there's a chance neither gmp nor OpenSSL are installed)
if (!defined('CRYPT_RSA_SMALLEST_PRIME')) {
define('CRYPT_RSA_SMALLEST_PRIME', 4096);
}
// OpenSSL uses 65537 as the exponent and requires RSA keys be 384 bits minimum
if (CRYPT_RSA_MODE == self::MODE_OPENSSL && $bits >= 384 && CRYPT_RSA_EXPONENT == 65537) {
$config = array();
if (isset($this->configFile)) {
$config['config'] = $this->configFile;
}
$rsa = openssl_pkey_new(array('private_key_bits' => $bits) + $config);
openssl_pkey_export($rsa, $privatekey, null, $config);
$publickey = openssl_pkey_get_details($rsa);
$publickey = $publickey['key'];
$privatekey = call_user_func_array(array($this, '_convertPrivateKey'), array_values($this->_parseKey($privatekey, self::PRIVATE_FORMAT_PKCS1)));
$publickey = call_user_func_array(array($this, '_convertPublicKey'), array_values($this->_parseKey($publickey, self::PUBLIC_FORMAT_PKCS1)));
// clear the buffer of error strings stemming from a minimalistic openssl.cnf
while (openssl_error_string() !== false) {
}
return array(
'privatekey' => $privatekey,
'publickey' => $publickey,
'partialkey' => false
);
}
static $e;
if (!isset($e)) {
$e = new BigInteger(CRYPT_RSA_EXPONENT);
}
extract($this->_generateMinMax($bits));
$absoluteMin = $min;
$temp = $bits >> 1; // divide by two to see how many bits P and Q would be
if ($temp > CRYPT_RSA_SMALLEST_PRIME) {
$num_primes = floor($bits / CRYPT_RSA_SMALLEST_PRIME);
$temp = CRYPT_RSA_SMALLEST_PRIME;
} else {
$num_primes = 2;
}
extract($this->_generateMinMax($temp + $bits % $temp));
$finalMax = $max;
extract($this->_generateMinMax($temp));
$generator = new BigInteger();
$n = $this->one->copy();
if (!empty($partial)) {
extract(unserialize($partial));
} else {
$exponents = $coefficients = $primes = array();
$lcm = array(
'top' => $this->one->copy(),
'bottom' => false
);
}
$start = time();
$i0 = count($primes) + 1;
do {
for ($i = $i0; $i <= $num_primes; $i++) {
if ($timeout !== false) {
$timeout-= time() - $start;
$start = time();
if ($timeout <= 0) {
return array(
'privatekey' => '',
'publickey' => '',
'partialkey' => serialize(array(
'primes' => $primes,
'coefficients' => $coefficients,
'lcm' => $lcm,
'exponents' => $exponents
))
);
}
}
if ($i == $num_primes) {
list($min, $temp) = $absoluteMin->divide($n);
if (!$temp->equals($this->zero)) {
$min = $min->add($this->one); // ie. ceil()
}
$primes[$i] = $generator->randomPrime($min, $finalMax, $timeout);
} else {
$primes[$i] = $generator->randomPrime($min, $max, $timeout);
}
if ($primes[$i] === false) { // if we've reached the timeout
if (count($primes) > 1) {
$partialkey = '';
} else {
array_pop($primes);
$partialkey = serialize(array(
'primes' => $primes,
'coefficients' => $coefficients,
'lcm' => $lcm,
'exponents' => $exponents
));
}
return array(
'privatekey' => '',
'publickey' => '',
'partialkey' => $partialkey
);
}
// the first coefficient is calculated differently from the rest
// ie. instead of being $primes[1]->modInverse($primes[2]), it's $primes[2]->modInverse($primes[1])
if ($i > 2) {
$coefficients[$i] = $n->modInverse($primes[$i]);
}
$n = $n->multiply($primes[$i]);
$temp = $primes[$i]->subtract($this->one);
// textbook RSA implementations use Euler's totient function instead of the least common multiple.
// see http://en.wikipedia.org/wiki/Euler%27s_totient_function
$lcm['top'] = $lcm['top']->multiply($temp);
$lcm['bottom'] = $lcm['bottom'] === false ? $temp : $lcm['bottom']->gcd($temp);
$exponents[$i] = $e->modInverse($temp);
}
list($temp) = $lcm['top']->divide($lcm['bottom']);
$gcd = $temp->gcd($e);
$i0 = 1;
} while (!$gcd->equals($this->one));
$d = $e->modInverse($temp);
$coefficients[2] = $primes[2]->modInverse($primes[1]);
// from <http://tools.ietf.org/html/rfc3447#appendix-A.1.2>:
// RSAPrivateKey ::= SEQUENCE {
// version Version,
// modulus INTEGER, -- n
// publicExponent INTEGER, -- e
// privateExponent INTEGER, -- d
// prime1 INTEGER, -- p
// prime2 INTEGER, -- q
// exponent1 INTEGER, -- d mod (p-1)
// exponent2 INTEGER, -- d mod (q-1)
// coefficient INTEGER, -- (inverse of q) mod p
// otherPrimeInfos OtherPrimeInfos OPTIONAL
// }
return array(
'privatekey' => $this->_convertPrivateKey($n, $e, $d, $primes, $exponents, $coefficients),
'publickey' => $this->_convertPublicKey($n, $e),
'partialkey' => false
);
}
/**
* Convert a private key to the appropriate format.
*
* @access private
* @see self::setPrivateKeyFormat()
* @param Math_BigInteger $n
* @param Math_BigInteger $e
* @param Math_BigInteger $d
* @param array<int,Math_BigInteger> $primes
* @param array<int,Math_BigInteger> $exponents
* @param array<int,Math_BigInteger> $coefficients
* @return string
*/
function _convertPrivateKey($n, $e, $d, $primes, $exponents, $coefficients)
{
$signed = $this->privateKeyFormat != self::PRIVATE_FORMAT_XML;
$num_primes = count($primes);
$raw = array(
'version' => $num_primes == 2 ? chr(0) : chr(1), // two-prime vs. multi
'modulus' => $n->toBytes($signed),
'publicExponent' => $e->toBytes($signed),
'privateExponent' => $d->toBytes($signed),
'prime1' => $primes[1]->toBytes($signed),
'prime2' => $primes[2]->toBytes($signed),
'exponent1' => $exponents[1]->toBytes($signed),
'exponent2' => $exponents[2]->toBytes($signed),
'coefficient' => $coefficients[2]->toBytes($signed)
);
// if the format in question does not support multi-prime rsa and multi-prime rsa was used,
// call _convertPublicKey() instead.
switch ($this->privateKeyFormat) {
case self::PRIVATE_FORMAT_XML:
if ($num_primes != 2) {
return false;
}
return "<RSAKeyValue>\r\n" .
' <Modulus>' . base64_encode($raw['modulus']) . "</Modulus>\r\n" .
' <Exponent>' . base64_encode($raw['publicExponent']) . "</Exponent>\r\n" .
' <P>' . base64_encode($raw['prime1']) . "</P>\r\n" .
' <Q>' . base64_encode($raw['prime2']) . "</Q>\r\n" .
' <DP>' . base64_encode($raw['exponent1']) . "</DP>\r\n" .
' <DQ>' . base64_encode($raw['exponent2']) . "</DQ>\r\n" .
' <InverseQ>' . base64_encode($raw['coefficient']) . "</InverseQ>\r\n" .
' <D>' . base64_encode($raw['privateExponent']) . "</D>\r\n" .
'</RSAKeyValue>';
break;
case self::PRIVATE_FORMAT_PUTTY:
if ($num_primes != 2) {
return false;
}
$key = "PuTTY-User-Key-File-2: ssh-rsa\r\nEncryption: ";
$encryption = (!empty($this->password) || is_string($this->password)) ? 'aes256-cbc' : 'none';
$key.= $encryption;
$key.= "\r\nComment: " . $this->comment . "\r\n";
$public = pack(
'Na*Na*Na*',
strlen('ssh-rsa'),
'ssh-rsa',
strlen($raw['publicExponent']),
$raw['publicExponent'],
strlen($raw['modulus']),
$raw['modulus']
);
$source = pack(
'Na*Na*Na*Na*',
strlen('ssh-rsa'),
'ssh-rsa',
strlen($encryption),
$encryption,
strlen($this->comment),
$this->comment,
strlen($public),
$public
);
$public = base64_encode($public);
$key.= "Public-Lines: " . ((strlen($public) + 63) >> 6) . "\r\n";
$key.= chunk_split($public, 64);
$private = pack(
'Na*Na*Na*Na*',
strlen($raw['privateExponent']),
$raw['privateExponent'],
strlen($raw['prime1']),
$raw['prime1'],
strlen($raw['prime2']),
$raw['prime2'],
strlen($raw['coefficient']),
$raw['coefficient']
);
if (empty($this->password) && !is_string($this->password)) {
$source.= pack('Na*', strlen($private), $private);
$hashkey = 'putty-private-key-file-mac-key';
} else {
$private.= Random::string(16 - (strlen($private) & 15));
$source.= pack('Na*', strlen($private), $private);
$sequence = 0;
$symkey = '';
while (strlen($symkey) < 32) {
$temp = pack('Na*', $sequence++, $this->password);
$symkey.= pack('H*', sha1($temp));
}
$symkey = substr($symkey, 0, 32);
$crypto = new AES();
$crypto->setKey($symkey);
$crypto->disablePadding();
$private = $crypto->encrypt($private);
$hashkey = 'putty-private-key-file-mac-key' . $this->password;
}
$private = base64_encode($private);
$key.= 'Private-Lines: ' . ((strlen($private) + 63) >> 6) . "\r\n";
$key.= chunk_split($private, 64);
$hash = new Hash('sha1');
$hash->setKey(pack('H*', sha1($hashkey)));
$key.= 'Private-MAC: ' . bin2hex($hash->hash($source)) . "\r\n";
return $key;
case self::PRIVATE_FORMAT_OPENSSH:
if ($num_primes != 2) {
return false;
}
$publicKey = pack('Na*Na*Na*', strlen('ssh-rsa'), 'ssh-rsa', strlen($raw['publicExponent']), $raw['publicExponent'], strlen($raw['modulus']), $raw['modulus']);
$privateKey = pack(
'Na*Na*Na*Na*Na*Na*Na*',
strlen('ssh-rsa'),
'ssh-rsa',
strlen($raw['modulus']),
$raw['modulus'],
strlen($raw['publicExponent']),
$raw['publicExponent'],
strlen($raw['privateExponent']),
$raw['privateExponent'],
strlen($raw['coefficient']),
$raw['coefficient'],
strlen($raw['prime1']),
$raw['prime1'],
strlen($raw['prime2']),
$raw['prime2']
);
$checkint = Random::string(4);
$paddedKey = pack(
'a*Na*',
$checkint . $checkint . $privateKey,
strlen($this->comment),
$this->comment
);
$paddingLength = (7 * strlen($paddedKey)) % 8;
for ($i = 1; $i <= $paddingLength; $i++) {
$paddedKey.= chr($i);
}
$key = pack(
'Na*Na*Na*NNa*Na*',
strlen('none'),
'none',
strlen('none'),
'none',
0,
'',
1,
strlen($publicKey),
$publicKey,
strlen($paddedKey),
$paddedKey
);
$key = "openssh-key-v1\0$key";
return "-----BEGIN OPENSSH PRIVATE KEY-----\n" .
chunk_split(base64_encode($key), 70, "\n") .
"-----END OPENSSH PRIVATE KEY-----\n";
default: // eg. self::PRIVATE_FORMAT_PKCS1
$components = array();
foreach ($raw as $name => $value) {
$components[$name] = pack('Ca*a*', self::ASN1_INTEGER, $this->_encodeLength(strlen($value)), $value);
}
$RSAPrivateKey = implode('', $components);
if ($num_primes > 2) {
$OtherPrimeInfos = '';
for ($i = 3; $i <= $num_primes; $i++) {
// OtherPrimeInfos ::= SEQUENCE SIZE(1..MAX) OF OtherPrimeInfo
//
// OtherPrimeInfo ::= SEQUENCE {
// prime INTEGER, -- ri
// exponent INTEGER, -- di
// coefficient INTEGER -- ti
// }
$OtherPrimeInfo = pack('Ca*a*', self::ASN1_INTEGER, $this->_encodeLength(strlen($primes[$i]->toBytes(true))), $primes[$i]->toBytes(true));
$OtherPrimeInfo.= pack('Ca*a*', self::ASN1_INTEGER, $this->_encodeLength(strlen($exponents[$i]->toBytes(true))), $exponents[$i]->toBytes(true));
$OtherPrimeInfo.= pack('Ca*a*', self::ASN1_INTEGER, $this->_encodeLength(strlen($coefficients[$i]->toBytes(true))), $coefficients[$i]->toBytes(true));
$OtherPrimeInfos.= pack('Ca*a*', self::ASN1_SEQUENCE, $this->_encodeLength(strlen($OtherPrimeInfo)), $OtherPrimeInfo);
}
$RSAPrivateKey.= pack('Ca*a*', self::ASN1_SEQUENCE, $this->_encodeLength(strlen($OtherPrimeInfos)), $OtherPrimeInfos);
}
$RSAPrivateKey = pack('Ca*a*', self::ASN1_SEQUENCE, $this->_encodeLength(strlen($RSAPrivateKey)), $RSAPrivateKey);
if ($this->privateKeyFormat == self::PRIVATE_FORMAT_PKCS8) {
$rsaOID = pack('H*', '300d06092a864886f70d0101010500'); // hex version of MA0GCSqGSIb3DQEBAQUA
$RSAPrivateKey = pack(
'Ca*a*Ca*a*',
self::ASN1_INTEGER,
"\01\00",
$rsaOID,
4,
$this->_encodeLength(strlen($RSAPrivateKey)),
$RSAPrivateKey
);
$RSAPrivateKey = pack('Ca*a*', self::ASN1_SEQUENCE, $this->_encodeLength(strlen($RSAPrivateKey)), $RSAPrivateKey);
if (!empty($this->password) || is_string($this->password)) {
$salt = Random::string(8);
$iterationCount = 2048;
$crypto = new DES();
$crypto->setPassword($this->password, 'pbkdf1', 'md5', $salt, $iterationCount);
$RSAPrivateKey = $crypto->encrypt($RSAPrivateKey);
$parameters = pack(
'Ca*a*Ca*N',
self::ASN1_OCTETSTRING,
$this->_encodeLength(strlen($salt)),
$salt,
self::ASN1_INTEGER,
$this->_encodeLength(4),
$iterationCount
);
$pbeWithMD5AndDES_CBC = "\x2a\x86\x48\x86\xf7\x0d\x01\x05\x03";
$encryptionAlgorithm = pack(
'Ca*a*Ca*a*',
self::ASN1_OBJECT,
$this->_encodeLength(strlen($pbeWithMD5AndDES_CBC)),
$pbeWithMD5AndDES_CBC,
self::ASN1_SEQUENCE,
$this->_encodeLength(strlen($parameters)),
$parameters
);
$RSAPrivateKey = pack(
'Ca*a*Ca*a*',
self::ASN1_SEQUENCE,
$this->_encodeLength(strlen($encryptionAlgorithm)),
$encryptionAlgorithm,
self::ASN1_OCTETSTRING,
$this->_encodeLength(strlen($RSAPrivateKey)),
$RSAPrivateKey
);
$RSAPrivateKey = pack('Ca*a*', self::ASN1_SEQUENCE, $this->_encodeLength(strlen($RSAPrivateKey)), $RSAPrivateKey);
$RSAPrivateKey = "-----BEGIN ENCRYPTED PRIVATE KEY-----\r\n" .
chunk_split(base64_encode($RSAPrivateKey), 64) .
'-----END ENCRYPTED PRIVATE KEY-----';
} else {
$RSAPrivateKey = "-----BEGIN PRIVATE KEY-----\r\n" .
chunk_split(base64_encode($RSAPrivateKey), 64) .
'-----END PRIVATE KEY-----';
}
return $RSAPrivateKey;
}
if (!empty($this->password) || is_string($this->password)) {
$iv = Random::string(8);
$symkey = pack('H*', md5($this->password . $iv)); // symkey is short for symmetric key
$symkey.= substr(pack('H*', md5($symkey . $this->password . $iv)), 0, 8);
$des = new TripleDES();
$des->setKey($symkey);
$des->setIV($iv);
$iv = strtoupper(bin2hex($iv));
$RSAPrivateKey = "-----BEGIN RSA PRIVATE KEY-----\r\n" .
"Proc-Type: 4,ENCRYPTED\r\n" .
"DEK-Info: DES-EDE3-CBC,$iv\r\n" .
"\r\n" .
chunk_split(base64_encode($des->encrypt($RSAPrivateKey)), 64) .
'-----END RSA PRIVATE KEY-----';
} else {
$RSAPrivateKey = "-----BEGIN RSA PRIVATE KEY-----\r\n" .
chunk_split(base64_encode($RSAPrivateKey), 64) .
'-----END RSA PRIVATE KEY-----';
}
return $RSAPrivateKey;
}
}
/**
* Convert a public key to the appropriate format
*
* @access private
* @see self::setPublicKeyFormat()
* @param Math_BigInteger $n
* @param Math_BigInteger $e
* @return string|array<string,Math_BigInteger>
*/
function _convertPublicKey($n, $e)
{
$signed = $this->publicKeyFormat != self::PUBLIC_FORMAT_XML;
$modulus = $n->toBytes($signed);
$publicExponent = $e->toBytes($signed);
switch ($this->publicKeyFormat) {
case self::PUBLIC_FORMAT_RAW:
return array('e' => $e->copy(), 'n' => $n->copy());
case self::PUBLIC_FORMAT_XML:
return "<RSAKeyValue>\r\n" .
' <Modulus>' . base64_encode($modulus) . "</Modulus>\r\n" .
' <Exponent>' . base64_encode($publicExponent) . "</Exponent>\r\n" .
'</RSAKeyValue>';
break;
case self::PUBLIC_FORMAT_OPENSSH:
// from <http://tools.ietf.org/html/rfc4253#page-15>:
// string "ssh-rsa"
// mpint e
// mpint n
$RSAPublicKey = pack('Na*Na*Na*', strlen('ssh-rsa'), 'ssh-rsa', strlen($publicExponent), $publicExponent, strlen($modulus), $modulus);
$RSAPublicKey = 'ssh-rsa ' . base64_encode($RSAPublicKey) . ' ' . $this->comment;
return $RSAPublicKey;
default: // eg. self::PUBLIC_FORMAT_PKCS1_RAW or self::PUBLIC_FORMAT_PKCS1
// from <http://tools.ietf.org/html/rfc3447#appendix-A.1.1>:
// RSAPublicKey ::= SEQUENCE {
// modulus INTEGER, -- n
// publicExponent INTEGER -- e
// }
$components = array(
'modulus' => pack('Ca*a*', self::ASN1_INTEGER, $this->_encodeLength(strlen($modulus)), $modulus),
'publicExponent' => pack('Ca*a*', self::ASN1_INTEGER, $this->_encodeLength(strlen($publicExponent)), $publicExponent)
);
$RSAPublicKey = pack(
'Ca*a*a*',
self::ASN1_SEQUENCE,
$this->_encodeLength(strlen($components['modulus']) + strlen($components['publicExponent'])),
$components['modulus'],
$components['publicExponent']
);
if ($this->publicKeyFormat == self::PUBLIC_FORMAT_PKCS1_RAW) {
$RSAPublicKey = "-----BEGIN RSA PUBLIC KEY-----\r\n" .
chunk_split(base64_encode($RSAPublicKey), 64) .
'-----END RSA PUBLIC KEY-----';
} else {
// sequence(oid(1.2.840.113549.1.1.1), null)) = rsaEncryption.
$rsaOID = pack('H*', '300d06092a864886f70d0101010500'); // hex version of MA0GCSqGSIb3DQEBAQUA
$RSAPublicKey = chr(0) . $RSAPublicKey;
$RSAPublicKey = chr(3) . $this->_encodeLength(strlen($RSAPublicKey)) . $RSAPublicKey;
$RSAPublicKey = pack(
'Ca*a*',
self::ASN1_SEQUENCE,
$this->_encodeLength(strlen($rsaOID . $RSAPublicKey)),
$rsaOID . $RSAPublicKey
);
$RSAPublicKey = "-----BEGIN PUBLIC KEY-----\r\n" .
chunk_split(base64_encode($RSAPublicKey), 64) .
'-----END PUBLIC KEY-----';
}
return $RSAPublicKey;
}
}
/**
* Break a public or private key down into its constituant components
*
* @access private
* @see self::_convertPublicKey()
* @see self::_convertPrivateKey()
* @param string|array $key
* @param int $type
* @return array|bool
*/
function _parseKey($key, $type)
{
if ($type != self::PUBLIC_FORMAT_RAW && !is_string($key)) {
return false;
}
switch ($type) {
case self::PUBLIC_FORMAT_RAW:
if (!is_array($key)) {
return false;
}
$components = array();
switch (true) {
case isset($key['e']):
$components['publicExponent'] = $key['e']->copy();
break;
case isset($key['exponent']):
$components['publicExponent'] = $key['exponent']->copy();
break;
case isset($key['publicExponent']):
$components['publicExponent'] = $key['publicExponent']->copy();
break;
case isset($key[0]):
$components['publicExponent'] = $key[0]->copy();
}
switch (true) {
case isset($key['n']):
$components['modulus'] = $key['n']->copy();
break;
case isset($key['modulo']):
$components['modulus'] = $key['modulo']->copy();
break;
case isset($key['modulus']):
$components['modulus'] = $key['modulus']->copy();
break;
case isset($key[1]):
$components['modulus'] = $key[1]->copy();
}
return isset($components['modulus']) && isset($components['publicExponent']) ? $components : false;
case self::PRIVATE_FORMAT_PKCS1:
case self::PRIVATE_FORMAT_PKCS8:
case self::PUBLIC_FORMAT_PKCS1:
/* Although PKCS#1 proposes a format that public and private keys can use, encrypting them is
"outside the scope" of PKCS#1. PKCS#1 then refers you to PKCS#12 and PKCS#15 if you're wanting to
protect private keys, however, that's not what OpenSSL* does. OpenSSL protects private keys by adding
two new "fields" to the key - DEK-Info and Proc-Type. These fields are discussed here:
http://tools.ietf.org/html/rfc1421#section-4.6.1.1
http://tools.ietf.org/html/rfc1421#section-4.6.1.3
DES-EDE3-CBC as an algorithm, however, is not discussed anywhere, near as I can tell.
DES-CBC and DES-EDE are discussed in RFC1423, however, DES-EDE3-CBC isn't, nor is its key derivation
function. As is, the definitive authority on this encoding scheme isn't the IETF but rather OpenSSL's
own implementation. ie. the implementation *is* the standard and any bugs that may exist in that
implementation are part of the standard, as well.
* OpenSSL is the de facto standard. It's utilized by OpenSSH and other projects */
if (preg_match('#DEK-Info: (.+),(.+)#', $key, $matches)) {
$iv = pack('H*', trim($matches[2]));
$symkey = pack('H*', md5($this->password . substr($iv, 0, 8))); // symkey is short for symmetric key
$symkey.= pack('H*', md5($symkey . $this->password . substr($iv, 0, 8)));
// remove the Proc-Type / DEK-Info sections as they're no longer needed
$key = preg_replace('#^(?:Proc-Type|DEK-Info): .*#m', '', $key);
$ciphertext = $this->_extractBER($key);
if ($ciphertext === false) {
$ciphertext = $key;
}
switch ($matches[1]) {
case 'AES-256-CBC':
$crypto = new AES();
break;
case 'AES-128-CBC':
$symkey = substr($symkey, 0, 16);
$crypto = new AES();
break;
case 'DES-EDE3-CFB':
$crypto = new TripleDES(Base::MODE_CFB);
break;
case 'DES-EDE3-CBC':
$symkey = substr($symkey, 0, 24);
$crypto = new TripleDES();
break;
case 'DES-CBC':
$crypto = new DES();
break;
default:
return false;
}
$crypto->setKey($symkey);
$crypto->setIV($iv);
$decoded = $crypto->decrypt($ciphertext);
} else {
$decoded = $this->_extractBER($key);
}
if ($decoded !== false) {
$key = $decoded;
}
$components = array();
if (ord($this->_string_shift($key)) != self::ASN1_SEQUENCE) {
return false;
}
if ($this->_decodeLength($key) != strlen($key)) {
return false;
}
$tag = ord($this->_string_shift($key));
/* intended for keys for which OpenSSL's asn1parse returns the following:
0:d=0 hl=4 l= 631 cons: SEQUENCE
4:d=1 hl=2 l= 1 prim: INTEGER :00
7:d=1 hl=2 l= 13 cons: SEQUENCE
9:d=2 hl=2 l= 9 prim: OBJECT :rsaEncryption
20:d=2 hl=2 l= 0 prim: NULL
22:d=1 hl=4 l= 609 prim: OCTET STRING
ie. PKCS8 keys*/
if ($tag == self::ASN1_INTEGER && substr($key, 0, 3) == "\x01\x00\x30") {
$this->_string_shift($key, 3);
$tag = self::ASN1_SEQUENCE;
}
if ($tag == self::ASN1_SEQUENCE) {
$temp = $this->_string_shift($key, $this->_decodeLength($key));
if (ord($this->_string_shift($temp)) != self::ASN1_OBJECT) {
return false;
}
$length = $this->_decodeLength($temp);
switch ($this->_string_shift($temp, $length)) {
case "\x2a\x86\x48\x86\xf7\x0d\x01\x01\x01": // rsaEncryption
case "\x2A\x86\x48\x86\xF7\x0D\x01\x01\x0A": // rsaPSS
break;
case "\x2a\x86\x48\x86\xf7\x0d\x01\x05\x03": // pbeWithMD5AndDES-CBC
/*
PBEParameter ::= SEQUENCE {
salt OCTET STRING (SIZE(8)),
iterationCount INTEGER }
*/
if (ord($this->_string_shift($temp)) != self::ASN1_SEQUENCE) {
return false;
}
if ($this->_decodeLength($temp) != strlen($temp)) {
return false;
}
$this->_string_shift($temp); // assume it's an octet string
$salt = $this->_string_shift($temp, $this->_decodeLength($temp));
if (ord($this->_string_shift($temp)) != self::ASN1_INTEGER) {
return false;
}
$this->_decodeLength($temp);
list(, $iterationCount) = unpack('N', str_pad($temp, 4, chr(0), STR_PAD_LEFT));
$this->_string_shift($key); // assume it's an octet string
$length = $this->_decodeLength($key);
if (strlen($key) != $length) {
return false;
}
$crypto = new DES();
$crypto->setPassword($this->password, 'pbkdf1', 'md5', $salt, $iterationCount);
$key = $crypto->decrypt($key);
if ($key === false) {
return false;
}
return $this->_parseKey($key, self::PRIVATE_FORMAT_PKCS1);
default:
return false;
}
/* intended for keys for which OpenSSL's asn1parse returns the following:
0:d=0 hl=4 l= 290 cons: SEQUENCE
4:d=1 hl=2 l= 13 cons: SEQUENCE
6:d=2 hl=2 l= 9 prim: OBJECT :rsaEncryption
17:d=2 hl=2 l= 0 prim: NULL
19:d=1 hl=4 l= 271 prim: BIT STRING */
$tag = ord($this->_string_shift($key)); // skip over the BIT STRING / OCTET STRING tag
$this->_decodeLength($key); // skip over the BIT STRING / OCTET STRING length
// "The initial octet shall encode, as an unsigned binary integer wtih bit 1 as the least significant bit, the number of
// unused bits in the final subsequent octet. The number shall be in the range zero to seven."
// -- http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf (section 8.6.2.2)
if ($tag == self::ASN1_BITSTRING) {
$this->_string_shift($key);
}
if (ord($this->_string_shift($key)) != self::ASN1_SEQUENCE) {
return false;
}
if ($this->_decodeLength($key) != strlen($key)) {
return false;
}
$tag = ord($this->_string_shift($key));
}
if ($tag != self::ASN1_INTEGER) {
return false;
}
$length = $this->_decodeLength($key);
$temp = $this->_string_shift($key, $length);
if (strlen($temp) != 1 || ord($temp) > 2) {
$components['modulus'] = new BigInteger($temp, 256);
$this->_string_shift($key); // skip over self::ASN1_INTEGER
$length = $this->_decodeLength($key);
$components[$type == self::PUBLIC_FORMAT_PKCS1 ? 'publicExponent' : 'privateExponent'] = new BigInteger($this->_string_shift($key, $length), 256);
return $components;
}
if (ord($this->_string_shift($key)) != self::ASN1_INTEGER) {
return false;
}
$length = $this->_decodeLength($key);
$components['modulus'] = new BigInteger($this->_string_shift($key, $length), 256);
$this->_string_shift($key);
$length = $this->_decodeLength($key);
$components['publicExponent'] = new BigInteger($this->_string_shift($key, $length), 256);
$this->_string_shift($key);
$length = $this->_decodeLength($key);
$components['privateExponent'] = new BigInteger($this->_string_shift($key, $length), 256);
$this->_string_shift($key);
$length = $this->_decodeLength($key);
$components['primes'] = array(1 => new BigInteger($this->_string_shift($key, $length), 256));
$this->_string_shift($key);
$length = $this->_decodeLength($key);
$components['primes'][] = new BigInteger($this->_string_shift($key, $length), 256);
$this->_string_shift($key);
$length = $this->_decodeLength($key);
$components['exponents'] = array(1 => new BigInteger($this->_string_shift($key, $length), 256));
$this->_string_shift($key);
$length = $this->_decodeLength($key);
$components['exponents'][] = new BigInteger($this->_string_shift($key, $length), 256);
$this->_string_shift($key);
$length = $this->_decodeLength($key);
$components['coefficients'] = array(2 => new BigInteger($this->_string_shift($key, $length), 256));
if (!empty($key)) {
if (ord($this->_string_shift($key)) != self::ASN1_SEQUENCE) {
return false;
}
$this->_decodeLength($key);
while (!empty($key)) {
if (ord($this->_string_shift($key)) != self::ASN1_SEQUENCE) {
return false;
}
$this->_decodeLength($key);
$key = substr($key, 1);
$length = $this->_decodeLength($key);
$components['primes'][] = new BigInteger($this->_string_shift($key, $length), 256);
$this->_string_shift($key);
$length = $this->_decodeLength($key);
$components['exponents'][] = new BigInteger($this->_string_shift($key, $length), 256);
$this->_string_shift($key);
$length = $this->_decodeLength($key);
$components['coefficients'][] = new BigInteger($this->_string_shift($key, $length), 256);
}
}
return $components;
case self::PUBLIC_FORMAT_OPENSSH:
$parts = explode(' ', $key, 3);
$key = isset($parts[1]) ? base64_decode($parts[1]) : false;
if ($key === false) {
return false;
}
$comment = isset($parts[2]) ? $parts[2] : false;
$cleanup = substr($key, 0, 11) == "\0\0\0\7ssh-rsa";
if (strlen($key) <= 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($key, 4)));
$publicExponent = new BigInteger($this->_string_shift($key, $length), -256);
if (strlen($key) <= 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($key, 4)));
$modulus = new BigInteger($this->_string_shift($key, $length), -256);
if ($cleanup && strlen($key)) {
if (strlen($key) <= 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($key, 4)));
$realModulus = new BigInteger($this->_string_shift($key, $length), -256);
return strlen($key) ? false : array(
'modulus' => $realModulus,
'publicExponent' => $modulus,
'comment' => $comment
);
} else {
return strlen($key) ? false : array(
'modulus' => $modulus,
'publicExponent' => $publicExponent,
'comment' => $comment
);
}
// http://www.w3.org/TR/xmldsig-core/#sec-RSAKeyValue
// http://en.wikipedia.org/wiki/XML_Signature
case self::PRIVATE_FORMAT_XML:
case self::PUBLIC_FORMAT_XML:
if (!extension_loaded('xml')) {
return false;
}
$this->components = array();
$xml = xml_parser_create('UTF-8');
xml_set_object($xml, $this);
xml_set_element_handler($xml, '_start_element_handler', '_stop_element_handler');
xml_set_character_data_handler($xml, '_data_handler');
// add <xml></xml> to account for "dangling" tags like <BitStrength>...</BitStrength> that are sometimes added
if (!xml_parse($xml, '<xml>' . $key . '</xml>')) {
xml_parser_free($xml);
unset($xml);
return false;
}
xml_parser_free($xml);
unset($xml);
return isset($this->components['modulus']) && isset($this->components['publicExponent']) ? $this->components : false;
// see PuTTY's SSHPUBK.C and https://tartarus.org/~simon/putty-snapshots/htmldoc/AppendixC.html
case self::PRIVATE_FORMAT_PUTTY:
$components = array();
$key = preg_split('#\r\n|\r|\n#', $key);
if ($this->_string_shift($key[0], strlen('PuTTY-User-Key-File-')) != 'PuTTY-User-Key-File-') {
return false;
}
$version = (int) $this->_string_shift($key[0], 3); // should be either "2: " or "3: 0" prior to int casting
if ($version != 2 && $version != 3) {
return false;
}
$type = rtrim($key[0]);
if ($type != 'ssh-rsa') {
return false;
}
$encryption = trim(preg_replace('#Encryption: (.+)#', '$1', $key[1]));
$comment = trim(preg_replace('#Comment: (.+)#', '$1', $key[2]));
$publicLength = trim(preg_replace('#Public-Lines: (\d+)#', '$1', $key[3]));
$public = base64_decode(implode('', array_map('trim', array_slice($key, 4, $publicLength))));
$public = substr($public, 11);
extract(unpack('Nlength', $this->_string_shift($public, 4)));
$components['publicExponent'] = new BigInteger($this->_string_shift($public, $length), -256);
extract(unpack('Nlength', $this->_string_shift($public, 4)));
$components['modulus'] = new BigInteger($this->_string_shift($public, $length), -256);
$offset = $publicLength + 4;
switch ($encryption) {
case 'aes256-cbc':
$crypto = new AES();
switch ($version) {
case 3:
if (!function_exists('sodium_crypto_pwhash')) {
return false;
}
$flavour = trim(preg_replace('#Key-Derivation: (.*)#', '$1', $key[$offset++]));
switch ($flavour) {
case 'Argon2i':
$flavour = SODIUM_CRYPTO_PWHASH_ALG_ARGON2I13;
break;
case 'Argon2id':
$flavour = SODIUM_CRYPTO_PWHASH_ALG_ARGON2ID13;
break;
default:
return false;
}
$memory = trim(preg_replace('#Argon2-Memory: (\d+)#', '$1', $key[$offset++]));
$passes = trim(preg_replace('#Argon2-Passes: (\d+)#', '$1', $key[$offset++]));
$parallelism = trim(preg_replace('#Argon2-Parallelism: (\d+)#', '$1', $key[$offset++]));
$salt = pack('H*', trim(preg_replace('#Argon2-Salt: ([0-9a-f]+)#', '$1', $key[$offset++])));
$length = 80; // keylen + ivlen + mac_keylen
$temp = sodium_crypto_pwhash($length, $this->password, $salt, $passes, $memory << 10, $flavour);
$symkey = substr($temp, 0, 32);
$symiv = substr($temp, 32, 16);
break;
case 2:
$symkey = '';
$sequence = 0;
while (strlen($symkey) < 32) {
$temp = pack('Na*', $sequence++, $this->password);
$symkey.= pack('H*', sha1($temp));
}
$symkey = substr($symkey, 0, 32);
$symiv = str_repeat("\0", 16);
}
}
$privateLength = trim(preg_replace('#Private-Lines: (\d+)#', '$1', $key[$offset++]));
$private = base64_decode(implode('', array_map('trim', array_slice($key, $offset, $privateLength))));
if ($encryption != 'none') {
$crypto->setKey($symkey);
$crypto->setIV($symiv);
$crypto->disablePadding();
$private = $crypto->decrypt($private);
if ($private === false) {
return false;
}
}
extract(unpack('Nlength', $this->_string_shift($private, 4)));
if (strlen($private) < $length) {
return false;
}
$components['privateExponent'] = new BigInteger($this->_string_shift($private, $length), -256);
extract(unpack('Nlength', $this->_string_shift($private, 4)));
if (strlen($private) < $length) {
return false;
}
$components['primes'] = array(1 => new BigInteger($this->_string_shift($private, $length), -256));
extract(unpack('Nlength', $this->_string_shift($private, 4)));
if (strlen($private) < $length) {
return false;
}
$components['primes'][] = new BigInteger($this->_string_shift($private, $length), -256);
$temp = $components['primes'][1]->subtract($this->one);
$components['exponents'] = array(1 => $components['publicExponent']->modInverse($temp));
$temp = $components['primes'][2]->subtract($this->one);
$components['exponents'][] = $components['publicExponent']->modInverse($temp);
extract(unpack('Nlength', $this->_string_shift($private, 4)));
if (strlen($private) < $length) {
return false;
}
$components['coefficients'] = array(2 => new BigInteger($this->_string_shift($private, $length), -256));
return $components;
case self::PRIVATE_FORMAT_OPENSSH:
$components = array();
$decoded = $this->_extractBER($key);
$magic = $this->_string_shift($decoded, 15);
if ($magic !== "openssh-key-v1\0") {
return false;
}
extract(unpack('Nlength', $this->_string_shift($decoded, 4)));
if (strlen($decoded) < $length) {
return false;
}
$ciphername = $this->_string_shift($decoded, $length);
extract(unpack('Nlength', $this->_string_shift($decoded, 4)));
if (strlen($decoded) < $length) {
return false;
}
$kdfname = $this->_string_shift($decoded, $length);
extract(unpack('Nlength', $this->_string_shift($decoded, 4)));
if (strlen($decoded) < $length) {
return false;
}
$kdfoptions = $this->_string_shift($decoded, $length);
extract(unpack('Nnumkeys', $this->_string_shift($decoded, 4)));
if ($numkeys != 1 || ($ciphername != 'none' && $kdfname != 'bcrypt')) {
return false;
}
switch ($ciphername) {
case 'none':
break;
case 'aes256-ctr':
extract(unpack('Nlength', $this->_string_shift($kdfoptions, 4)));
if (strlen($kdfoptions) < $length) {
return false;
}
$salt = $this->_string_shift($kdfoptions, $length);
extract(unpack('Nrounds', $this->_string_shift($kdfoptions, 4)));
$crypto = new AES(AES::MODE_CTR);
$crypto->disablePadding();
if (!$crypto->setPassword($this->password, 'bcrypt', $salt, $rounds, 32)) {
return false;
}
break;
default:
return false;
}
extract(unpack('Nlength', $this->_string_shift($decoded, 4)));
if (strlen($decoded) < $length) {
return false;
}
$publicKey = $this->_string_shift($decoded, $length);
extract(unpack('Nlength', $this->_string_shift($decoded, 4)));
if (strlen($decoded) < $length) {
return false;
}
if ($this->_string_shift($publicKey, 11) !== "\0\0\0\7ssh-rsa") {
return false;
}
$paddedKey = $this->_string_shift($decoded, $length);
if (isset($crypto)) {
$paddedKey = $crypto->decrypt($paddedKey);
}
$checkint1 = $this->_string_shift($paddedKey, 4);
$checkint2 = $this->_string_shift($paddedKey, 4);
if (strlen($checkint1) != 4 || $checkint1 !== $checkint2) {
return false;
}
if ($this->_string_shift($paddedKey, 11) !== "\0\0\0\7ssh-rsa") {
return false;
}
$values = array(
&$components['modulus'],
&$components['publicExponent'],
&$components['privateExponent'],
&$components['coefficients'][2],
&$components['primes'][1],
&$components['primes'][2]
);
foreach ($values as &$value) {
extract(unpack('Nlength', $this->_string_shift($paddedKey, 4)));
if (strlen($paddedKey) < $length) {
return false;
}
$value = new BigInteger($this->_string_shift($paddedKey, $length), -256);
}
extract(unpack('Nlength', $this->_string_shift($paddedKey, 4)));
if (strlen($paddedKey) < $length) {
return false;
}
$components['comment'] = $this->_string_shift($decoded, $length);
$temp = $components['primes'][1]->subtract($this->one);
$components['exponents'] = array(1 => $components['publicExponent']->modInverse($temp));
$temp = $components['primes'][2]->subtract($this->one);
$components['exponents'][] = $components['publicExponent']->modInverse($temp);
return $components;
}
return false;
}
/**
* Returns the key size
*
* More specifically, this returns the size of the modulo in bits.
*
* @access public
* @return int
*/
function getSize()
{
return !isset($this->modulus) ? 0 : strlen($this->modulus->toBits());
}
/**
* Start Element Handler
*
* Called by xml_set_element_handler()
*
* @access private
* @param resource $parser
* @param string $name
* @param array $attribs
*/
function _start_element_handler($parser, $name, $attribs)
{
//$name = strtoupper($name);
switch ($name) {
case 'MODULUS':
$this->current = &$this->components['modulus'];
break;
case 'EXPONENT':
$this->current = &$this->components['publicExponent'];
break;
case 'P':
$this->current = &$this->components['primes'][1];
break;
case 'Q':
$this->current = &$this->components['primes'][2];
break;
case 'DP':
$this->current = &$this->components['exponents'][1];
break;
case 'DQ':
$this->current = &$this->components['exponents'][2];
break;
case 'INVERSEQ':
$this->current = &$this->components['coefficients'][2];
break;
case 'D':
$this->current = &$this->components['privateExponent'];
}
$this->current = '';
}
/**
* Stop Element Handler
*
* Called by xml_set_element_handler()
*
* @access private
* @param resource $parser
* @param string $name
*/
function _stop_element_handler($parser, $name)
{
if (isset($this->current)) {
$this->current = new BigInteger(base64_decode($this->current), 256);
unset($this->current);
}
}
/**
* Data Handler
*
* Called by xml_set_character_data_handler()
*
* @access private
* @param resource $parser
* @param string $data
*/
function _data_handler($parser, $data)
{
if (!isset($this->current) || is_object($this->current)) {
return;
}
$this->current.= trim($data);
}
/**
* Loads a public or private key
*
* Returns true on success and false on failure (ie. an incorrect password was provided or the key was malformed)
*
* @access public
* @param string|RSA|array $key
* @param bool|int $type optional
* @return bool
*/
function loadKey($key, $type = false)
{
if ($key instanceof RSA) {
$this->privateKeyFormat = $key->privateKeyFormat;
$this->publicKeyFormat = $key->publicKeyFormat;
$this->k = $key->k;
$this->hLen = $key->hLen;
$this->sLen = $key->sLen;
$this->mgfHLen = $key->mgfHLen;
$this->encryptionMode = $key->encryptionMode;
$this->signatureMode = $key->signatureMode;
$this->password = $key->password;
$this->configFile = $key->configFile;
$this->comment = $key->comment;
if (is_object($key->hash)) {
$this->hash = new Hash($key->hash->getHash());
}
if (is_object($key->mgfHash)) {
$this->mgfHash = new Hash($key->mgfHash->getHash());
}
if (is_object($key->modulus)) {
$this->modulus = $key->modulus->copy();
}
if (is_object($key->exponent)) {
$this->exponent = $key->exponent->copy();
}
if (is_object($key->publicExponent)) {
$this->publicExponent = $key->publicExponent->copy();
}
$this->primes = array();
$this->exponents = array();
$this->coefficients = array();
foreach ($this->primes as $prime) {
$this->primes[] = $prime->copy();
}
foreach ($this->exponents as $exponent) {
$this->exponents[] = $exponent->copy();
}
foreach ($this->coefficients as $coefficient) {
$this->coefficients[] = $coefficient->copy();
}
return true;
}
if ($type === false) {
$types = array(
self::PUBLIC_FORMAT_RAW,
self::PRIVATE_FORMAT_PKCS1,
self::PRIVATE_FORMAT_XML,
self::PRIVATE_FORMAT_PUTTY,
self::PUBLIC_FORMAT_OPENSSH,
self::PRIVATE_FORMAT_OPENSSH
);
foreach ($types as $type) {
$components = $this->_parseKey($key, $type);
if ($components !== false) {
break;
}
}
} else {
$components = $this->_parseKey($key, $type);
}
if ($components === false) {
$this->comment = null;
$this->modulus = null;
$this->k = null;
$this->exponent = null;
$this->primes = null;
$this->exponents = null;
$this->coefficients = null;
$this->publicExponent = null;
return false;
}
if (isset($components['comment']) && $components['comment'] !== false) {
$this->comment = $components['comment'];
}
$this->modulus = $components['modulus'];
$this->k = strlen($this->modulus->toBytes());
$this->exponent = isset($components['privateExponent']) ? $components['privateExponent'] : $components['publicExponent'];
if (isset($components['primes'])) {
$this->primes = $components['primes'];
$this->exponents = $components['exponents'];
$this->coefficients = $components['coefficients'];
$this->publicExponent = $components['publicExponent'];
} else {
$this->primes = array();
$this->exponents = array();
$this->coefficients = array();
$this->publicExponent = false;
}
switch ($type) {
case self::PUBLIC_FORMAT_OPENSSH:
case self::PUBLIC_FORMAT_RAW:
$this->setPublicKey();
break;
case self::PRIVATE_FORMAT_PKCS1:
switch (true) {
case strpos($key, '-BEGIN PUBLIC KEY-') !== false:
case strpos($key, '-BEGIN RSA PUBLIC KEY-') !== false:
$this->setPublicKey();
}
}
return true;
}
/**
* Sets the password
*
* Private keys can be encrypted with a password. To unset the password, pass in the empty string or false.
* Or rather, pass in $password such that empty($password) && !is_string($password) is true.
*
* @see self::createKey()
* @see self::loadKey()
* @access public
* @param string $password
*/
function setPassword($password = false)
{
$this->password = $password;
}
/**
* Defines the public key
*
* Some private key formats define the public exponent and some don't. Those that don't define it are problematic when
* used in certain contexts. For example, in SSH-2, RSA authentication works by sending the public key along with a
* message signed by the private key to the server. The SSH-2 server looks the public key up in an index of public keys
* and if it's present then proceeds to verify the signature. Problem is, if your private key doesn't include the public
* exponent this won't work unless you manually add the public exponent. phpseclib tries to guess if the key being used
* is the public key but in the event that it guesses incorrectly you might still want to explicitly set the key as being
* public.
*
* Do note that when a new key is loaded the index will be cleared.
*
* Returns true on success, false on failure
*
* @see self::getPublicKey()
* @access public
* @param string $key optional
* @param int $type optional
* @return bool
*/
function setPublicKey($key = false, $type = false)
{
// if a public key has already been loaded return false
if (!empty($this->publicExponent)) {
return false;
}
if ($key === false && !empty($this->modulus)) {
$this->publicExponent = $this->exponent;
return true;
}
if ($type === false) {
$types = array(
self::PUBLIC_FORMAT_RAW,
self::PUBLIC_FORMAT_PKCS1,
self::PUBLIC_FORMAT_XML,
self::PUBLIC_FORMAT_OPENSSH
);
foreach ($types as $type) {
$components = $this->_parseKey($key, $type);
if ($components !== false) {
break;
}
}
} else {
$components = $this->_parseKey($key, $type);
}
if ($components === false) {
return false;
}
if (empty($this->modulus) || !$this->modulus->equals($components['modulus'])) {
$this->modulus = $components['modulus'];
$this->exponent = $this->publicExponent = $components['publicExponent'];
return true;
}
$this->publicExponent = $components['publicExponent'];
return true;
}
/**
* Defines the private key
*
* If phpseclib guessed a private key was a public key and loaded it as such it might be desirable to force
* phpseclib to treat the key as a private key. This function will do that.
*
* Do note that when a new key is loaded the index will be cleared.
*
* Returns true on success, false on failure
*
* @see self::getPublicKey()
* @access public
* @param string $key optional
* @param int $type optional
* @return bool
*/
function setPrivateKey($key = false, $type = false)
{
if ($key === false && !empty($this->publicExponent)) {
$this->publicExponent = false;
return true;
}
$rsa = new RSA();
if (!$rsa->loadKey($key, $type)) {
return false;
}
$rsa->publicExponent = false;
// don't overwrite the old key if the new key is invalid
$this->loadKey($rsa);
return true;
}
/**
* Returns the public key
*
* The public key is only returned under two circumstances - if the private key had the public key embedded within it
* or if the public key was set via setPublicKey(). If the currently loaded key is supposed to be the public key this
* function won't return it since this library, for the most part, doesn't distinguish between public and private keys.
*
* @see self::getPublicKey()
* @access public
* @param int $type optional
*/
function getPublicKey($type = self::PUBLIC_FORMAT_PKCS8)
{
if (empty($this->modulus) || empty($this->publicExponent)) {
return false;
}
$oldFormat = $this->publicKeyFormat;
$this->publicKeyFormat = $type;
$temp = $this->_convertPublicKey($this->modulus, $this->publicExponent);
$this->publicKeyFormat = $oldFormat;
return $temp;
}
/**
* Returns the public key's fingerprint
*
* The public key's fingerprint is returned, which is equivalent to running `ssh-keygen -lf rsa.pub`. If there is
* no public key currently loaded, false is returned.
* Example output (md5): "c1:b1:30:29:d7:b8:de:6c:97:77:10:d7:46:41:63:87" (as specified by RFC 4716)
*
* @access public
* @param string $algorithm The hashing algorithm to be used. Valid options are 'md5' and 'sha256'. False is returned
* for invalid values.
* @return mixed
*/
function getPublicKeyFingerprint($algorithm = 'md5')
{
if (empty($this->modulus) || empty($this->publicExponent)) {
return false;
}
$modulus = $this->modulus->toBytes(true);
$publicExponent = $this->publicExponent->toBytes(true);
$RSAPublicKey = pack('Na*Na*Na*', strlen('ssh-rsa'), 'ssh-rsa', strlen($publicExponent), $publicExponent, strlen($modulus), $modulus);
switch ($algorithm) {
case 'sha256':
$hash = new Hash('sha256');
$base = base64_encode($hash->hash($RSAPublicKey));
return substr($base, 0, strlen($base) - 1);
case 'md5':
return substr(chunk_split(md5($RSAPublicKey), 2, ':'), 0, -1);
default:
return false;
}
}
/**
* Returns the private key
*
* The private key is only returned if the currently loaded key contains the constituent prime numbers.
*
* @see self::getPublicKey()
* @access public
* @param int $type optional
* @return mixed
*/
function getPrivateKey($type = self::PUBLIC_FORMAT_PKCS1)
{
if (empty($this->primes)) {
return false;
}
$oldFormat = $this->privateKeyFormat;
$this->privateKeyFormat = $type;
$temp = $this->_convertPrivateKey($this->modulus, $this->publicExponent, $this->exponent, $this->primes, $this->exponents, $this->coefficients);
$this->privateKeyFormat = $oldFormat;
return $temp;
}
/**
* Returns a minimalistic private key
*
* Returns the private key without the prime number constituants. Structurally identical to a public key that
* hasn't been set as the public key
*
* @see self::getPrivateKey()
* @access private
* @param int $mode optional
*/
function _getPrivatePublicKey($mode = self::PUBLIC_FORMAT_PKCS8)
{
if (empty($this->modulus) || empty($this->exponent)) {
return false;
}
$oldFormat = $this->publicKeyFormat;
$this->publicKeyFormat = $mode;
$temp = $this->_convertPublicKey($this->modulus, $this->exponent);
$this->publicKeyFormat = $oldFormat;
return $temp;
}
/**
* __toString() magic method
*
* @access public
* @return string
*/
function __toString()
{
$key = $this->getPrivateKey($this->privateKeyFormat);
if ($key !== false) {
return $key;
}
$key = $this->_getPrivatePublicKey($this->publicKeyFormat);
return $key !== false ? $key : '';
}
/**
* __clone() magic method
*
* @access public
* @return Crypt_RSA
*/
function __clone()
{
$key = new RSA();
$key->loadKey($this);
return $key;
}
/**
* Generates the smallest and largest numbers requiring $bits bits
*
* @access private
* @param int $bits
* @return array
*/
function _generateMinMax($bits)
{
$bytes = $bits >> 3;
$min = str_repeat(chr(0), $bytes);
$max = str_repeat(chr(0xFF), $bytes);
$msb = $bits & 7;
if ($msb) {
$min = chr(1 << ($msb - 1)) . $min;
$max = chr((1 << $msb) - 1) . $max;
} else {
$min[0] = chr(0x80);
}
return array(
'min' => new BigInteger($min, 256),
'max' => new BigInteger($max, 256)
);
}
/**
* DER-decode the length
*
* DER supports lengths up to (2**8)**127, however, we'll only support lengths up to (2**8)**4. See
* {@link http://itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf#p=13 X.690 paragraph 8.1.3} for more information.
*
* @access private
* @param string $string
* @return int
*/
function _decodeLength(&$string)
{
$length = ord($this->_string_shift($string));
if ($length & 0x80) { // definite length, long form
$length&= 0x7F;
$temp = $this->_string_shift($string, $length);
list(, $length) = unpack('N', substr(str_pad($temp, 4, chr(0), STR_PAD_LEFT), -4));
}
return $length;
}
/**
* DER-encode the length
*
* DER supports lengths up to (2**8)**127, however, we'll only support lengths up to (2**8)**4. See
* {@link http://itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf#p=13 X.690 paragraph 8.1.3} for more information.
*
* @access private
* @param int $length
* @return string
*/
function _encodeLength($length)
{
if ($length <= 0x7F) {
return chr($length);
}
$temp = ltrim(pack('N', $length), chr(0));
return pack('Ca*', 0x80 | strlen($temp), $temp);
}
/**
* String Shift
*
* Inspired by array_shift
*
* @param string $string
* @param int $index
* @return string
* @access private
*/
function _string_shift(&$string, $index = 1)
{
$substr = substr($string, 0, $index);
$string = substr($string, $index);
return $substr;
}
/**
* Determines the private key format
*
* @see self::createKey()
* @access public
* @param int $format
*/
function setPrivateKeyFormat($format)
{
$this->privateKeyFormat = $format;
}
/**
* Determines the public key format
*
* @see self::createKey()
* @access public
* @param int $format
*/
function setPublicKeyFormat($format)
{
$this->publicKeyFormat = $format;
}
/**
* Determines which hashing function should be used
*
* Used with signature production / verification and (if the encryption mode is self::ENCRYPTION_OAEP) encryption and
* decryption. If $hash isn't supported, sha1 is used.
*
* @access public
* @param string $hash
*/
function setHash($hash)
{
// \phpseclib\Crypt\Hash supports algorithms that PKCS#1 doesn't support. md5-96 and sha1-96, for example.
switch ($hash) {
case 'md2':
case 'md5':
case 'sha1':
case 'sha256':
case 'sha384':
case 'sha512':
$this->hash = new Hash($hash);
$this->hashName = $hash;
break;
default:
$this->hash = new Hash('sha1');
$this->hashName = 'sha1';
}
$this->hLen = $this->hash->getLength();
}
/**
* Determines which hashing function should be used for the mask generation function
*
* The mask generation function is used by self::ENCRYPTION_OAEP and self::SIGNATURE_PSS and although it's
* best if Hash and MGFHash are set to the same thing this is not a requirement.
*
* @access public
* @param string $hash
*/
function setMGFHash($hash)
{
// \phpseclib\Crypt\Hash supports algorithms that PKCS#1 doesn't support. md5-96 and sha1-96, for example.
switch ($hash) {
case 'md2':
case 'md5':
case 'sha1':
case 'sha256':
case 'sha384':
case 'sha512':
$this->mgfHash = new Hash($hash);
break;
default:
$this->mgfHash = new Hash('sha1');
}
$this->mgfHLen = $this->mgfHash->getLength();
}
/**
* Determines the salt length
*
* To quote from {@link http://tools.ietf.org/html/rfc3447#page-38 RFC3447#page-38}:
*
* Typical salt lengths in octets are hLen (the length of the output
* of the hash function Hash) and 0.
*
* @access public
* @param int $sLen
*/
function setSaltLength($sLen)
{
$this->sLen = $sLen;
}
/**
* Integer-to-Octet-String primitive
*
* See {@link http://tools.ietf.org/html/rfc3447#section-4.1 RFC3447#section-4.1}.
*
* @access private
* @param \phpseclib\Math\BigInteger $x
* @param int $xLen
* @return string
*/
function _i2osp($x, $xLen)
{
$x = $x->toBytes();
if (strlen($x) > $xLen) {
user_error('Integer too large');
return false;
}
return str_pad($x, $xLen, chr(0), STR_PAD_LEFT);
}
/**
* Octet-String-to-Integer primitive
*
* See {@link http://tools.ietf.org/html/rfc3447#section-4.2 RFC3447#section-4.2}.
*
* @access private
* @param int|string|resource $x
* @return \phpseclib\Math\BigInteger
*/
function _os2ip($x)
{
return new BigInteger($x, 256);
}
/**
* Exponentiate with or without Chinese Remainder Theorem
*
* See {@link http://tools.ietf.org/html/rfc3447#section-5.1.1 RFC3447#section-5.1.2}.
*
* @access private
* @param \phpseclib\Math\BigInteger $x
* @return \phpseclib\Math\BigInteger
*/
function _exponentiate($x)
{
switch (true) {
case empty($this->primes):
case $this->primes[1]->equals($this->zero):
case empty($this->coefficients):
case $this->coefficients[2]->equals($this->zero):
case empty($this->exponents):
case $this->exponents[1]->equals($this->zero):
return $x->modPow($this->exponent, $this->modulus);
}
$num_primes = count($this->primes);
if (defined('CRYPT_RSA_DISABLE_BLINDING')) {
$m_i = array(
1 => $x->modPow($this->exponents[1], $this->primes[1]),
2 => $x->modPow($this->exponents[2], $this->primes[2])
);
$h = $m_i[1]->subtract($m_i[2]);
$h = $h->multiply($this->coefficients[2]);
list(, $h) = $h->divide($this->primes[1]);
$m = $m_i[2]->add($h->multiply($this->primes[2]));
$r = $this->primes[1];
for ($i = 3; $i <= $num_primes; $i++) {
$m_i = $x->modPow($this->exponents[$i], $this->primes[$i]);
$r = $r->multiply($this->primes[$i - 1]);
$h = $m_i->subtract($m);
$h = $h->multiply($this->coefficients[$i]);
list(, $h) = $h->divide($this->primes[$i]);
$m = $m->add($r->multiply($h));
}
} else {
$smallest = $this->primes[1];
for ($i = 2; $i <= $num_primes; $i++) {
if ($smallest->compare($this->primes[$i]) > 0) {
$smallest = $this->primes[$i];
}
}
$one = new BigInteger(1);
$r = $one->random($one, $smallest->subtract($one));
$m_i = array(
1 => $this->_blind($x, $r, 1),
2 => $this->_blind($x, $r, 2)
);
$h = $m_i[1]->subtract($m_i[2]);
$h = $h->multiply($this->coefficients[2]);
list(, $h) = $h->divide($this->primes[1]);
$m = $m_i[2]->add($h->multiply($this->primes[2]));
$r = $this->primes[1];
for ($i = 3; $i <= $num_primes; $i++) {
$m_i = $this->_blind($x, $r, $i);
$r = $r->multiply($this->primes[$i - 1]);
$h = $m_i->subtract($m);
$h = $h->multiply($this->coefficients[$i]);
list(, $h) = $h->divide($this->primes[$i]);
$m = $m->add($r->multiply($h));
}
}
return $m;
}
/**
* Performs RSA Blinding
*
* Protects against timing attacks by employing RSA Blinding.
* Returns $x->modPow($this->exponents[$i], $this->primes[$i])
*
* @access private
* @param \phpseclib\Math\BigInteger $x
* @param \phpseclib\Math\BigInteger $r
* @param int $i
* @return \phpseclib\Math\BigInteger
*/
function _blind($x, $r, $i)
{
$x = $x->multiply($r->modPow($this->publicExponent, $this->primes[$i]));
$x = $x->modPow($this->exponents[$i], $this->primes[$i]);
$r = $r->modInverse($this->primes[$i]);
$x = $x->multiply($r);
list(, $x) = $x->divide($this->primes[$i]);
return $x;
}
/**
* Performs blinded RSA equality testing
*
* Protects against a particular type of timing attack described.
*
* See {@link http://codahale.com/a-lesson-in-timing-attacks/ A Lesson In Timing Attacks (or, Don't use MessageDigest.isEquals)}
*
* Thanks for the heads up singpolyma!
*
* @access private
* @param string $x
* @param string $y
* @return bool
*/
function _equals($x, $y)
{
if (function_exists('hash_equals')) {
return hash_equals($x, $y);
}
if (strlen($x) != strlen($y)) {
return false;
}
$result = "\0";
$x^= $y;
for ($i = 0; $i < strlen($x); $i++) {
$result|= $x[$i];
}
return $result === "\0";
}
/**
* RSAEP
*
* See {@link http://tools.ietf.org/html/rfc3447#section-5.1.1 RFC3447#section-5.1.1}.
*
* @access private
* @param \phpseclib\Math\BigInteger $m
* @return \phpseclib\Math\BigInteger
*/
function _rsaep($m)
{
if ($m->compare($this->zero) < 0 || $m->compare($this->modulus) > 0) {
user_error('Message representative out of range');
return false;
}
return $this->_exponentiate($m);
}
/**
* RSADP
*
* See {@link http://tools.ietf.org/html/rfc3447#section-5.1.2 RFC3447#section-5.1.2}.
*
* @access private
* @param \phpseclib\Math\BigInteger $c
* @return \phpseclib\Math\BigInteger
*/
function _rsadp($c)
{
if ($c->compare($this->zero) < 0 || $c->compare($this->modulus) > 0) {
user_error('Ciphertext representative out of range');
return false;
}
return $this->_exponentiate($c);
}
/**
* RSASP1
*
* See {@link http://tools.ietf.org/html/rfc3447#section-5.2.1 RFC3447#section-5.2.1}.
*
* @access private
* @param \phpseclib\Math\BigInteger $m
* @return \phpseclib\Math\BigInteger
*/
function _rsasp1($m)
{
if ($m->compare($this->zero) < 0 || $m->compare($this->modulus) > 0) {
user_error('Message representative out of range');
return false;
}
return $this->_exponentiate($m);
}
/**
* RSAVP1
*
* See {@link http://tools.ietf.org/html/rfc3447#section-5.2.2 RFC3447#section-5.2.2}.
*
* @access private
* @param \phpseclib\Math\BigInteger $s
* @return \phpseclib\Math\BigInteger
*/
function _rsavp1($s)
{
if ($s->compare($this->zero) < 0 || $s->compare($this->modulus) > 0) {
user_error('Signature representative out of range');
return false;
}
return $this->_exponentiate($s);
}
/**
* MGF1
*
* See {@link http://tools.ietf.org/html/rfc3447#appendix-B.2.1 RFC3447#appendix-B.2.1}.
*
* @access private
* @param string $mgfSeed
* @param int $maskLen
* @return string
*/
function _mgf1($mgfSeed, $maskLen)
{
// if $maskLen would yield strings larger than 4GB, PKCS#1 suggests a "Mask too long" error be output.
$t = '';
$count = ceil($maskLen / $this->mgfHLen);
for ($i = 0; $i < $count; $i++) {
$c = pack('N', $i);
$t.= $this->mgfHash->hash($mgfSeed . $c);
}
return substr($t, 0, $maskLen);
}
/**
* RSAES-OAEP-ENCRYPT
*
* See {@link http://tools.ietf.org/html/rfc3447#section-7.1.1 RFC3447#section-7.1.1} and
* {http://en.wikipedia.org/wiki/Optimal_Asymmetric_Encryption_Padding OAES}.
*
* @access private
* @param string $m
* @param string $l
* @return string
*/
function _rsaes_oaep_encrypt($m, $l = '')
{
$mLen = strlen($m);
// Length checking
// if $l is larger than two million terrabytes and you're using sha1, PKCS#1 suggests a "Label too long" error
// be output.
if ($mLen > $this->k - 2 * $this->hLen - 2) {
user_error('Message too long');
return false;
}
// EME-OAEP encoding
$lHash = $this->hash->hash($l);
$ps = str_repeat(chr(0), $this->k - $mLen - 2 * $this->hLen - 2);
$db = $lHash . $ps . chr(1) . $m;
$seed = Random::string($this->hLen);
$dbMask = $this->_mgf1($seed, $this->k - $this->hLen - 1);
$maskedDB = $db ^ $dbMask;
$seedMask = $this->_mgf1($maskedDB, $this->hLen);
$maskedSeed = $seed ^ $seedMask;
$em = chr(0) . $maskedSeed . $maskedDB;
// RSA encryption
$m = $this->_os2ip($em);
$c = $this->_rsaep($m);
$c = $this->_i2osp($c, $this->k);
// Output the ciphertext C
return $c;
}
/**
* RSAES-OAEP-DECRYPT
*
* See {@link http://tools.ietf.org/html/rfc3447#section-7.1.2 RFC3447#section-7.1.2}. The fact that the error
* messages aren't distinguishable from one another hinders debugging, but, to quote from RFC3447#section-7.1.2:
*
* Note. Care must be taken to ensure that an opponent cannot
* distinguish the different error conditions in Step 3.g, whether by
* error message or timing, or, more generally, learn partial
* information about the encoded message EM. Otherwise an opponent may
* be able to obtain useful information about the decryption of the
* ciphertext C, leading to a chosen-ciphertext attack such as the one
* observed by Manger [36].
*
* As for $l... to quote from {@link http://tools.ietf.org/html/rfc3447#page-17 RFC3447#page-17}:
*
* Both the encryption and the decryption operations of RSAES-OAEP take
* the value of a label L as input. In this version of PKCS #1, L is
* the empty string; other uses of the label are outside the scope of
* this document.
*
* @access private
* @param string $c
* @param string $l
* @return string
*/
function _rsaes_oaep_decrypt($c, $l = '')
{
// Length checking
// if $l is larger than two million terrabytes and you're using sha1, PKCS#1 suggests a "Label too long" error
// be output.
if (strlen($c) != $this->k || $this->k < 2 * $this->hLen + 2) {
user_error('Decryption error');
return false;
}
// RSA decryption
$c = $this->_os2ip($c);
$m = $this->_rsadp($c);
if ($m === false) {
user_error('Decryption error');
return false;
}
$em = $this->_i2osp($m, $this->k);
// EME-OAEP decoding
$lHash = $this->hash->hash($l);
$y = ord($em[0]);
$maskedSeed = substr($em, 1, $this->hLen);
$maskedDB = substr($em, $this->hLen + 1);
$seedMask = $this->_mgf1($maskedDB, $this->hLen);
$seed = $maskedSeed ^ $seedMask;
$dbMask = $this->_mgf1($seed, $this->k - $this->hLen - 1);
$db = $maskedDB ^ $dbMask;
$lHash2 = substr($db, 0, $this->hLen);
$m = substr($db, $this->hLen);
$hashesMatch = $this->_equals($lHash, $lHash2);
$leadingZeros = 1;
$patternMatch = 0;
$offset = 0;
for ($i = 0; $i < strlen($m); $i++) {
$patternMatch|= $leadingZeros & ($m[$i] === "\1");
$leadingZeros&= $m[$i] === "\0";
$offset+= $patternMatch ? 0 : 1;
}
// we do | instead of || to avoid https://en.wikipedia.org/wiki/Short-circuit_evaluation
// to protect against timing attacks
if (!$hashesMatch | !$patternMatch) {
user_error('Decryption error');
return false;
}
// Output the message M
return substr($m, $offset + 1);
}
/**
* Raw Encryption / Decryption
*
* Doesn't use padding and is not recommended.
*
* @access private
* @param string $m
* @return string
*/
function _raw_encrypt($m)
{
$temp = $this->_os2ip($m);
$temp = $this->_rsaep($temp);
return $this->_i2osp($temp, $this->k);
}
/**
* RSAES-PKCS1-V1_5-ENCRYPT
*
* See {@link http://tools.ietf.org/html/rfc3447#section-7.2.1 RFC3447#section-7.2.1}.
*
* @access private
* @param string $m
* @return string
*/
function _rsaes_pkcs1_v1_5_encrypt($m)
{
$mLen = strlen($m);
// Length checking
if ($mLen > $this->k - 11) {
user_error('Message too long');
return false;
}
// EME-PKCS1-v1_5 encoding
$psLen = $this->k - $mLen - 3;
$ps = '';
while (strlen($ps) != $psLen) {
$temp = Random::string($psLen - strlen($ps));
$temp = str_replace("\x00", '', $temp);
$ps.= $temp;
}
$type = 2;
// see the comments of _rsaes_pkcs1_v1_5_decrypt() to understand why this is being done
if (defined('CRYPT_RSA_PKCS15_COMPAT') && (!isset($this->publicExponent) || $this->exponent !== $this->publicExponent)) {
$type = 1;
// "The padding string PS shall consist of k-3-||D|| octets. ... for block type 01, they shall have value FF"
$ps = str_repeat("\xFF", $psLen);
}
$em = chr(0) . chr($type) . $ps . chr(0) . $m;
// RSA encryption
$m = $this->_os2ip($em);
$c = $this->_rsaep($m);
$c = $this->_i2osp($c, $this->k);
// Output the ciphertext C
return $c;
}
/**
* RSAES-PKCS1-V1_5-DECRYPT
*
* See {@link http://tools.ietf.org/html/rfc3447#section-7.2.2 RFC3447#section-7.2.2}.
*
* For compatibility purposes, this function departs slightly from the description given in RFC3447.
* The reason being that RFC2313#section-8.1 (PKCS#1 v1.5) states that ciphertext's encrypted by the
* private key should have the second byte set to either 0 or 1 and that ciphertext's encrypted by the
* public key should have the second byte set to 2. In RFC3447 (PKCS#1 v2.1), the second byte is supposed
* to be 2 regardless of which key is used. For compatibility purposes, we'll just check to make sure the
* second byte is 2 or less. If it is, we'll accept the decrypted string as valid.
*
* As a consequence of this, a private key encrypted ciphertext produced with \phpseclib\Crypt\RSA may not decrypt
* with a strictly PKCS#1 v1.5 compliant RSA implementation. Public key encrypted ciphertext's should but
* not private key encrypted ciphertext's.
*
* @access private
* @param string $c
* @return string
*/
function _rsaes_pkcs1_v1_5_decrypt($c)
{
// Length checking
if (strlen($c) != $this->k) { // or if k < 11
user_error('Decryption error');
return false;
}
// RSA decryption
$c = $this->_os2ip($c);
$m = $this->_rsadp($c);
if ($m === false) {
user_error('Decryption error');
return false;
}
$em = $this->_i2osp($m, $this->k);
// EME-PKCS1-v1_5 decoding
if (ord($em[0]) != 0 || ord($em[1]) > 2) {
user_error('Decryption error');
return false;
}
$ps = substr($em, 2, strpos($em, chr(0), 2) - 2);
$m = substr($em, strlen($ps) + 3);
if (strlen($ps) < 8) {
user_error('Decryption error');
return false;
}
// Output M
return $m;
}
/**
* EMSA-PSS-ENCODE
*
* See {@link http://tools.ietf.org/html/rfc3447#section-9.1.1 RFC3447#section-9.1.1}.
*
* @access private
* @param string $m
* @param int $emBits
*/
function _emsa_pss_encode($m, $emBits)
{
// if $m is larger than two million terrabytes and you're using sha1, PKCS#1 suggests a "Label too long" error
// be output.
$emLen = ($emBits + 1) >> 3; // ie. ceil($emBits / 8)
$sLen = $this->sLen !== null ? $this->sLen : $this->hLen;
$mHash = $this->hash->hash($m);
if ($emLen < $this->hLen + $sLen + 2) {
user_error('Encoding error');
return false;
}
$salt = Random::string($sLen);
$m2 = "\0\0\0\0\0\0\0\0" . $mHash . $salt;
$h = $this->hash->hash($m2);
$ps = str_repeat(chr(0), $emLen - $sLen - $this->hLen - 2);
$db = $ps . chr(1) . $salt;
$dbMask = $this->_mgf1($h, $emLen - $this->hLen - 1);
$maskedDB = $db ^ $dbMask;
$maskedDB[0] = ~chr(0xFF << ($emBits & 7)) & $maskedDB[0];
$em = $maskedDB . $h . chr(0xBC);
return $em;
}
/**
* EMSA-PSS-VERIFY
*
* See {@link http://tools.ietf.org/html/rfc3447#section-9.1.2 RFC3447#section-9.1.2}.
*
* @access private
* @param string $m
* @param string $em
* @param int $emBits
* @return string
*/
function _emsa_pss_verify($m, $em, $emBits)
{
// if $m is larger than two million terrabytes and you're using sha1, PKCS#1 suggests a "Label too long" error
// be output.
$emLen = ($emBits + 7) >> 3; // ie. ceil($emBits / 8);
$sLen = $this->sLen !== null ? $this->sLen : $this->hLen;
$mHash = $this->hash->hash($m);
if ($emLen < $this->hLen + $sLen + 2) {
return false;
}
if ($em[strlen($em) - 1] != chr(0xBC)) {
return false;
}
$maskedDB = substr($em, 0, -$this->hLen - 1);
$h = substr($em, -$this->hLen - 1, $this->hLen);
$temp = chr(0xFF << ($emBits & 7));
if ((~$maskedDB[0] & $temp) != $temp) {
return false;
}
$dbMask = $this->_mgf1($h, $emLen - $this->hLen - 1);
$db = $maskedDB ^ $dbMask;
$db[0] = ~chr(0xFF << ($emBits & 7)) & $db[0];
$temp = $emLen - $this->hLen - $sLen - 2;
if (substr($db, 0, $temp) != str_repeat(chr(0), $temp) || ord($db[$temp]) != 1) {
return false;
}
$salt = substr($db, $temp + 1); // should be $sLen long
$m2 = "\0\0\0\0\0\0\0\0" . $mHash . $salt;
$h2 = $this->hash->hash($m2);
return $this->_equals($h, $h2);
}
/**
* RSASSA-PSS-SIGN
*
* See {@link http://tools.ietf.org/html/rfc3447#section-8.1.1 RFC3447#section-8.1.1}.
*
* @access private
* @param string $m
* @return string
*/
function _rsassa_pss_sign($m)
{
// EMSA-PSS encoding
$em = $this->_emsa_pss_encode($m, 8 * $this->k - 1);
// RSA signature
$m = $this->_os2ip($em);
$s = $this->_rsasp1($m);
$s = $this->_i2osp($s, $this->k);
// Output the signature S
return $s;
}
/**
* RSASSA-PSS-VERIFY
*
* See {@link http://tools.ietf.org/html/rfc3447#section-8.1.2 RFC3447#section-8.1.2}.
*
* @access private
* @param string $m
* @param string $s
* @return string
*/
function _rsassa_pss_verify($m, $s)
{
// Length checking
if (strlen($s) != $this->k) {
user_error('Invalid signature');
return false;
}
// RSA verification
$modBits = strlen($this->modulus->toBits());
$s2 = $this->_os2ip($s);
$m2 = $this->_rsavp1($s2);
if ($m2 === false) {
user_error('Invalid signature');
return false;
}
$em = $this->_i2osp($m2, $this->k);
if ($em === false) {
user_error('Invalid signature');
return false;
}
// EMSA-PSS verification
return $this->_emsa_pss_verify($m, $em, $modBits - 1);
}
/**
* EMSA-PKCS1-V1_5-ENCODE
*
* See {@link http://tools.ietf.org/html/rfc3447#section-9.2 RFC3447#section-9.2}.
*
* @access private
* @param string $m
* @param int $emLen
* @return string
*/
function _emsa_pkcs1_v1_5_encode($m, $emLen)
{
$h = $this->hash->hash($m);
if ($h === false) {
return false;
}
// see http://tools.ietf.org/html/rfc3447#page-43
switch ($this->hashName) {
case 'md2':
$t = pack('H*', '3020300c06082a864886f70d020205000410');
break;
case 'md5':
$t = pack('H*', '3020300c06082a864886f70d020505000410');
break;
case 'sha1':
$t = pack('H*', '3021300906052b0e03021a05000414');
break;
case 'sha256':
$t = pack('H*', '3031300d060960864801650304020105000420');
break;
case 'sha384':
$t = pack('H*', '3041300d060960864801650304020205000430');
break;
case 'sha512':
$t = pack('H*', '3051300d060960864801650304020305000440');
}
$t.= $h;
$tLen = strlen($t);
if ($emLen < $tLen + 11) {
user_error('Intended encoded message length too short');
return false;
}
$ps = str_repeat(chr(0xFF), $emLen - $tLen - 3);
$em = "\0\1$ps\0$t";
return $em;
}
/**
* EMSA-PKCS1-V1_5-ENCODE (without NULL)
*
* Quoting https://tools.ietf.org/html/rfc8017#page-65,
*
* "The parameters field associated with id-sha1, id-sha224, id-sha256,
* id-sha384, id-sha512, id-sha512/224, and id-sha512/256 should
* generally be omitted, but if present, it shall have a value of type
* NULL"
*
* @access private
* @param string $m
* @param int $emLen
* @return string
*/
function _emsa_pkcs1_v1_5_encode_without_null($m, $emLen)
{
$h = $this->hash->hash($m);
if ($h === false) {
return false;
}
switch ($this->hashName) {
case 'sha1':
$t = pack('H*', '301f300706052b0e03021a0414');
break;
case 'sha256':
$t = pack('H*', '302f300b06096086480165030402010420');
break;
case 'sha384':
$t = pack('H*', '303f300b06096086480165030402020430');
break;
case 'sha512':
$t = pack('H*', '304f300b06096086480165030402030440');
break;
default:
return false;
}
$t.= $h;
$tLen = strlen($t);
if ($emLen < $tLen + 11) {
user_error('Intended encoded message length too short');
return false;
}
$ps = str_repeat(chr(0xFF), $emLen - $tLen - 3);
$em = "\0\1$ps\0$t";
return $em;
}
/**
* RSASSA-PKCS1-V1_5-SIGN
*
* See {@link http://tools.ietf.org/html/rfc3447#section-8.2.1 RFC3447#section-8.2.1}.
*
* @access private
* @param string $m
* @return string
*/
function _rsassa_pkcs1_v1_5_sign($m)
{
// EMSA-PKCS1-v1_5 encoding
$em = $this->_emsa_pkcs1_v1_5_encode($m, $this->k);
if ($em === false) {
user_error('RSA modulus too short');
return false;
}
// RSA signature
$m = $this->_os2ip($em);
$s = $this->_rsasp1($m);
$s = $this->_i2osp($s, $this->k);
// Output the signature S
return $s;
}
/**
* RSASSA-PKCS1-V1_5-VERIFY
*
* See {@link http://tools.ietf.org/html/rfc3447#section-8.2.2 RFC3447#section-8.2.2}.
*
* @access private
* @param string $m
* @param string $s
* @return string
*/
function _rsassa_pkcs1_v1_5_verify($m, $s)
{
// Length checking
if (strlen($s) != $this->k) {
user_error('Invalid signature');
return false;
}
// RSA verification
$s = $this->_os2ip($s);
$m2 = $this->_rsavp1($s);
if ($m2 === false) {
user_error('Invalid signature');
return false;
}
$em = $this->_i2osp($m2, $this->k);
if ($em === false) {
user_error('Invalid signature');
return false;
}
// EMSA-PKCS1-v1_5 encoding
$em2 = $this->_emsa_pkcs1_v1_5_encode($m, $this->k);
$em3 = $this->_emsa_pkcs1_v1_5_encode_without_null($m, $this->k);
if ($em2 === false && $em3 === false) {
user_error('RSA modulus too short');
return false;
}
// Compare
return ($em2 !== false && $this->_equals($em, $em2)) ||
($em3 !== false && $this->_equals($em, $em3));
}
/**
* Set Encryption Mode
*
* Valid values include self::ENCRYPTION_OAEP and self::ENCRYPTION_PKCS1.
*
* @access public
* @param int $mode
*/
function setEncryptionMode($mode)
{
$this->encryptionMode = $mode;
}
/**
* Set Signature Mode
*
* Valid values include self::SIGNATURE_PSS and self::SIGNATURE_PKCS1
*
* @access public
* @param int $mode
*/
function setSignatureMode($mode)
{
$this->signatureMode = $mode;
}
/**
* Set public key comment.
*
* @access public
* @param string $comment
*/
function setComment($comment)
{
$this->comment = $comment;
}
/**
* Get public key comment.
*
* @access public
* @return string
*/
function getComment()
{
return $this->comment;
}
/**
* Encryption
*
* Both self::ENCRYPTION_OAEP and self::ENCRYPTION_PKCS1 both place limits on how long $plaintext can be.
* If $plaintext exceeds those limits it will be broken up so that it does and the resultant ciphertext's will
* be concatenated together.
*
* @see self::decrypt()
* @access public
* @param string $plaintext
* @return string
*/
function encrypt($plaintext)
{
switch ($this->encryptionMode) {
case self::ENCRYPTION_NONE:
$plaintext = str_split($plaintext, $this->k);
$ciphertext = '';
foreach ($plaintext as $m) {
$ciphertext.= $this->_raw_encrypt($m);
}
return $ciphertext;
case self::ENCRYPTION_PKCS1:
$length = $this->k - 11;
if ($length <= 0) {
return false;
}
$plaintext = str_split($plaintext, $length);
$ciphertext = '';
foreach ($plaintext as $m) {
$ciphertext.= $this->_rsaes_pkcs1_v1_5_encrypt($m);
}
return $ciphertext;
//case self::ENCRYPTION_OAEP:
default:
$length = $this->k - 2 * $this->hLen - 2;
if ($length <= 0) {
return false;
}
$plaintext = str_split($plaintext, $length);
$ciphertext = '';
foreach ($plaintext as $m) {
$ciphertext.= $this->_rsaes_oaep_encrypt($m);
}
return $ciphertext;
}
}
/**
* Decryption
*
* @see self::encrypt()
* @access public
* @param string $ciphertext
* @return string
*/
function decrypt($ciphertext)
{
if ($this->k <= 0) {
return false;
}
$ciphertext = str_split($ciphertext, $this->k);
$ciphertext[count($ciphertext) - 1] = str_pad($ciphertext[count($ciphertext) - 1], $this->k, chr(0), STR_PAD_LEFT);
$plaintext = '';
switch ($this->encryptionMode) {
case self::ENCRYPTION_NONE:
$decrypt = '_raw_encrypt';
break;
case self::ENCRYPTION_PKCS1:
$decrypt = '_rsaes_pkcs1_v1_5_decrypt';
break;
//case self::ENCRYPTION_OAEP:
default:
$decrypt = '_rsaes_oaep_decrypt';
}
foreach ($ciphertext as $c) {
$temp = $this->$decrypt($c);
if ($temp === false) {
return false;
}
$plaintext.= $temp;
}
return $plaintext;
}
/**
* Create a signature
*
* @see self::verify()
* @access public
* @param string $message
* @return string
*/
function sign($message)
{
if (empty($this->modulus) || empty($this->exponent)) {
return false;
}
switch ($this->signatureMode) {
case self::SIGNATURE_PKCS1:
return $this->_rsassa_pkcs1_v1_5_sign($message);
//case self::SIGNATURE_PSS:
default:
return $this->_rsassa_pss_sign($message);
}
}
/**
* Verifies a signature
*
* @see self::sign()
* @access public
* @param string $message
* @param string $signature
* @return bool
*/
function verify($message, $signature)
{
if (empty($this->modulus) || empty($this->exponent)) {
return false;
}
switch ($this->signatureMode) {
case self::SIGNATURE_PKCS1:
return $this->_rsassa_pkcs1_v1_5_verify($message, $signature);
//case self::SIGNATURE_PSS:
default:
return $this->_rsassa_pss_verify($message, $signature);
}
}
/**
* Extract raw BER from Base64 encoding
*
* @access private
* @param string $str
* @return string
*/
function _extractBER($str)
{
/* X.509 certs are assumed to be base64 encoded but sometimes they'll have additional things in them
* above and beyond the ceritificate.
* ie. some may have the following preceding the -----BEGIN CERTIFICATE----- line:
*
* Bag Attributes
* localKeyID: 01 00 00 00
* subject=/O=organization/OU=org unit/CN=common name
* issuer=/O=organization/CN=common name
*/
$temp = preg_replace('#.*?^-+[^-]+-+[\r\n ]*$#ms', '', $str, 1);
// remove the -----BEGIN CERTIFICATE----- and -----END CERTIFICATE----- stuff
$temp = preg_replace('#-+[^-]+-+#', '', $temp);
// remove new lines
$temp = str_replace(array("\r", "\n", ' '), '', $temp);
$temp = preg_match('#^[a-zA-Z\d/+]*={0,2}$#', $temp) ? base64_decode($temp) : false;
return $temp != false ? $temp : $str;
}
}
PK ��$Z�.9�X X ! phpseclib/phpseclib/Crypt/RC2.phpnu �[��� <?php
/**
* Pure-PHP implementation of RC2.
*
* Uses mcrypt, if available, and an internal implementation, otherwise.
*
* PHP version 5
*
* Useful resources are as follows:
*
* - {@link http://tools.ietf.org/html/rfc2268}
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $rc2 = new \phpseclib\Crypt\RC2();
*
* $rc2->setKey('abcdefgh');
*
* $plaintext = str_repeat('a', 1024);
*
* echo $rc2->decrypt($rc2->encrypt($plaintext));
* ?>
* </code>
*
* @category Crypt
* @package RC2
* @author Patrick Monnerat <pm@datasphere.ch>
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt;
/**
* Pure-PHP implementation of RC2.
*
* @package RC2
* @access public
*/
class RC2 extends Base
{
/**
* Block Length of the cipher
*
* @see \phpseclib\Crypt\Base::block_size
* @var int
* @access private
*/
var $block_size = 8;
/**
* The Key
*
* @see \phpseclib\Crypt\Base::key
* @see self::setKey()
* @var string
* @access private
*/
var $key;
/**
* The Original (unpadded) Key
*
* @see \phpseclib\Crypt\Base::key
* @see self::setKey()
* @see self::encrypt()
* @see self::decrypt()
* @var string
* @access private
*/
var $orig_key = '';
/**
* Don't truncate / null pad key
*
* @see \phpseclib\Crypt\Base::_clearBuffers()
* @var bool
* @access private
*/
var $skip_key_adjustment = true;
/**
* Key Length (in bytes)
*
* @see \phpseclib\Crypt\RC2::setKeyLength()
* @var int
* @access private
*/
var $key_length = 16; // = 128 bits
/**
* The mcrypt specific name of the cipher
*
* @see \phpseclib\Crypt\Base::cipher_name_mcrypt
* @var string
* @access private
*/
var $cipher_name_mcrypt = 'rc2';
/**
* Optimizing value while CFB-encrypting
*
* @see \phpseclib\Crypt\Base::cfb_init_len
* @var int
* @access private
*/
var $cfb_init_len = 500;
/**
* The key length in bits.
*
* @see self::setKeyLength()
* @see self::setKey()
* @var int
* @access private
* @internal Should be in range [1..1024].
* @internal Changing this value after setting the key has no effect.
*/
var $default_key_length = 1024;
/**
* The key length in bits.
*
* @see self::isValidEnine()
* @see self::setKey()
* @var int
* @access private
* @internal Should be in range [1..1024].
*/
var $current_key_length;
/**
* The Key Schedule
*
* @see self::_setupKey()
* @var array
* @access private
*/
var $keys;
/**
* Key expansion randomization table.
* Twice the same 256-value sequence to save a modulus in key expansion.
*
* @see self::setKey()
* @var array
* @access private
*/
var $pitable = array(
0xD9, 0x78, 0xF9, 0xC4, 0x19, 0xDD, 0xB5, 0xED,
0x28, 0xE9, 0xFD, 0x79, 0x4A, 0xA0, 0xD8, 0x9D,
0xC6, 0x7E, 0x37, 0x83, 0x2B, 0x76, 0x53, 0x8E,
0x62, 0x4C, 0x64, 0x88, 0x44, 0x8B, 0xFB, 0xA2,
0x17, 0x9A, 0x59, 0xF5, 0x87, 0xB3, 0x4F, 0x13,
0x61, 0x45, 0x6D, 0x8D, 0x09, 0x81, 0x7D, 0x32,
0xBD, 0x8F, 0x40, 0xEB, 0x86, 0xB7, 0x7B, 0x0B,
0xF0, 0x95, 0x21, 0x22, 0x5C, 0x6B, 0x4E, 0x82,
0x54, 0xD6, 0x65, 0x93, 0xCE, 0x60, 0xB2, 0x1C,
0x73, 0x56, 0xC0, 0x14, 0xA7, 0x8C, 0xF1, 0xDC,
0x12, 0x75, 0xCA, 0x1F, 0x3B, 0xBE, 0xE4, 0xD1,
0x42, 0x3D, 0xD4, 0x30, 0xA3, 0x3C, 0xB6, 0x26,
0x6F, 0xBF, 0x0E, 0xDA, 0x46, 0x69, 0x07, 0x57,
0x27, 0xF2, 0x1D, 0x9B, 0xBC, 0x94, 0x43, 0x03,
0xF8, 0x11, 0xC7, 0xF6, 0x90, 0xEF, 0x3E, 0xE7,
0x06, 0xC3, 0xD5, 0x2F, 0xC8, 0x66, 0x1E, 0xD7,
0x08, 0xE8, 0xEA, 0xDE, 0x80, 0x52, 0xEE, 0xF7,
0x84, 0xAA, 0x72, 0xAC, 0x35, 0x4D, 0x6A, 0x2A,
0x96, 0x1A, 0xD2, 0x71, 0x5A, 0x15, 0x49, 0x74,
0x4B, 0x9F, 0xD0, 0x5E, 0x04, 0x18, 0xA4, 0xEC,
0xC2, 0xE0, 0x41, 0x6E, 0x0F, 0x51, 0xCB, 0xCC,
0x24, 0x91, 0xAF, 0x50, 0xA1, 0xF4, 0x70, 0x39,
0x99, 0x7C, 0x3A, 0x85, 0x23, 0xB8, 0xB4, 0x7A,
0xFC, 0x02, 0x36, 0x5B, 0x25, 0x55, 0x97, 0x31,
0x2D, 0x5D, 0xFA, 0x98, 0xE3, 0x8A, 0x92, 0xAE,
0x05, 0xDF, 0x29, 0x10, 0x67, 0x6C, 0xBA, 0xC9,
0xD3, 0x00, 0xE6, 0xCF, 0xE1, 0x9E, 0xA8, 0x2C,
0x63, 0x16, 0x01, 0x3F, 0x58, 0xE2, 0x89, 0xA9,
0x0D, 0x38, 0x34, 0x1B, 0xAB, 0x33, 0xFF, 0xB0,
0xBB, 0x48, 0x0C, 0x5F, 0xB9, 0xB1, 0xCD, 0x2E,
0xC5, 0xF3, 0xDB, 0x47, 0xE5, 0xA5, 0x9C, 0x77,
0x0A, 0xA6, 0x20, 0x68, 0xFE, 0x7F, 0xC1, 0xAD,
0xD9, 0x78, 0xF9, 0xC4, 0x19, 0xDD, 0xB5, 0xED,
0x28, 0xE9, 0xFD, 0x79, 0x4A, 0xA0, 0xD8, 0x9D,
0xC6, 0x7E, 0x37, 0x83, 0x2B, 0x76, 0x53, 0x8E,
0x62, 0x4C, 0x64, 0x88, 0x44, 0x8B, 0xFB, 0xA2,
0x17, 0x9A, 0x59, 0xF5, 0x87, 0xB3, 0x4F, 0x13,
0x61, 0x45, 0x6D, 0x8D, 0x09, 0x81, 0x7D, 0x32,
0xBD, 0x8F, 0x40, 0xEB, 0x86, 0xB7, 0x7B, 0x0B,
0xF0, 0x95, 0x21, 0x22, 0x5C, 0x6B, 0x4E, 0x82,
0x54, 0xD6, 0x65, 0x93, 0xCE, 0x60, 0xB2, 0x1C,
0x73, 0x56, 0xC0, 0x14, 0xA7, 0x8C, 0xF1, 0xDC,
0x12, 0x75, 0xCA, 0x1F, 0x3B, 0xBE, 0xE4, 0xD1,
0x42, 0x3D, 0xD4, 0x30, 0xA3, 0x3C, 0xB6, 0x26,
0x6F, 0xBF, 0x0E, 0xDA, 0x46, 0x69, 0x07, 0x57,
0x27, 0xF2, 0x1D, 0x9B, 0xBC, 0x94, 0x43, 0x03,
0xF8, 0x11, 0xC7, 0xF6, 0x90, 0xEF, 0x3E, 0xE7,
0x06, 0xC3, 0xD5, 0x2F, 0xC8, 0x66, 0x1E, 0xD7,
0x08, 0xE8, 0xEA, 0xDE, 0x80, 0x52, 0xEE, 0xF7,
0x84, 0xAA, 0x72, 0xAC, 0x35, 0x4D, 0x6A, 0x2A,
0x96, 0x1A, 0xD2, 0x71, 0x5A, 0x15, 0x49, 0x74,
0x4B, 0x9F, 0xD0, 0x5E, 0x04, 0x18, 0xA4, 0xEC,
0xC2, 0xE0, 0x41, 0x6E, 0x0F, 0x51, 0xCB, 0xCC,
0x24, 0x91, 0xAF, 0x50, 0xA1, 0xF4, 0x70, 0x39,
0x99, 0x7C, 0x3A, 0x85, 0x23, 0xB8, 0xB4, 0x7A,
0xFC, 0x02, 0x36, 0x5B, 0x25, 0x55, 0x97, 0x31,
0x2D, 0x5D, 0xFA, 0x98, 0xE3, 0x8A, 0x92, 0xAE,
0x05, 0xDF, 0x29, 0x10, 0x67, 0x6C, 0xBA, 0xC9,
0xD3, 0x00, 0xE6, 0xCF, 0xE1, 0x9E, 0xA8, 0x2C,
0x63, 0x16, 0x01, 0x3F, 0x58, 0xE2, 0x89, 0xA9,
0x0D, 0x38, 0x34, 0x1B, 0xAB, 0x33, 0xFF, 0xB0,
0xBB, 0x48, 0x0C, 0x5F, 0xB9, 0xB1, 0xCD, 0x2E,
0xC5, 0xF3, 0xDB, 0x47, 0xE5, 0xA5, 0x9C, 0x77,
0x0A, 0xA6, 0x20, 0x68, 0xFE, 0x7F, 0xC1, 0xAD
);
/**
* Inverse key expansion randomization table.
*
* @see self::setKey()
* @var array
* @access private
*/
var $invpitable = array(
0xD1, 0xDA, 0xB9, 0x6F, 0x9C, 0xC8, 0x78, 0x66,
0x80, 0x2C, 0xF8, 0x37, 0xEA, 0xE0, 0x62, 0xA4,
0xCB, 0x71, 0x50, 0x27, 0x4B, 0x95, 0xD9, 0x20,
0x9D, 0x04, 0x91, 0xE3, 0x47, 0x6A, 0x7E, 0x53,
0xFA, 0x3A, 0x3B, 0xB4, 0xA8, 0xBC, 0x5F, 0x68,
0x08, 0xCA, 0x8F, 0x14, 0xD7, 0xC0, 0xEF, 0x7B,
0x5B, 0xBF, 0x2F, 0xE5, 0xE2, 0x8C, 0xBA, 0x12,
0xE1, 0xAF, 0xB2, 0x54, 0x5D, 0x59, 0x76, 0xDB,
0x32, 0xA2, 0x58, 0x6E, 0x1C, 0x29, 0x64, 0xF3,
0xE9, 0x96, 0x0C, 0x98, 0x19, 0x8D, 0x3E, 0x26,
0xAB, 0xA5, 0x85, 0x16, 0x40, 0xBD, 0x49, 0x67,
0xDC, 0x22, 0x94, 0xBB, 0x3C, 0xC1, 0x9B, 0xEB,
0x45, 0x28, 0x18, 0xD8, 0x1A, 0x42, 0x7D, 0xCC,
0xFB, 0x65, 0x8E, 0x3D, 0xCD, 0x2A, 0xA3, 0x60,
0xAE, 0x93, 0x8A, 0x48, 0x97, 0x51, 0x15, 0xF7,
0x01, 0x0B, 0xB7, 0x36, 0xB1, 0x2E, 0x11, 0xFD,
0x84, 0x2D, 0x3F, 0x13, 0x88, 0xB3, 0x34, 0x24,
0x1B, 0xDE, 0xC5, 0x1D, 0x4D, 0x2B, 0x17, 0x31,
0x74, 0xA9, 0xC6, 0x43, 0x6D, 0x39, 0x90, 0xBE,
0xC3, 0xB0, 0x21, 0x6B, 0xF6, 0x0F, 0xD5, 0x99,
0x0D, 0xAC, 0x1F, 0x5C, 0x9E, 0xF5, 0xF9, 0x4C,
0xD6, 0xDF, 0x89, 0xE4, 0x8B, 0xFF, 0xC7, 0xAA,
0xE7, 0xED, 0x46, 0x25, 0xB6, 0x06, 0x5E, 0x35,
0xB5, 0xEC, 0xCE, 0xE8, 0x6C, 0x30, 0x55, 0x61,
0x4A, 0xFE, 0xA0, 0x79, 0x03, 0xF0, 0x10, 0x72,
0x7C, 0xCF, 0x52, 0xA6, 0xA7, 0xEE, 0x44, 0xD3,
0x9A, 0x57, 0x92, 0xD0, 0x5A, 0x7A, 0x41, 0x7F,
0x0E, 0x00, 0x63, 0xF2, 0x4F, 0x05, 0x83, 0xC9,
0xA1, 0xD4, 0xDD, 0xC4, 0x56, 0xF4, 0xD2, 0x77,
0x81, 0x09, 0x82, 0x33, 0x9F, 0x07, 0x86, 0x75,
0x38, 0x4E, 0x69, 0xF1, 0xAD, 0x23, 0x73, 0x87,
0x70, 0x02, 0xC2, 0x1E, 0xB8, 0x0A, 0xFC, 0xE6
);
/**
* Test for engine validity
*
* This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
*
* @see \phpseclib\Crypt\Base::__construct()
* @param int $engine
* @access public
* @return bool
*/
function isValidEngine($engine)
{
switch ($engine) {
case self::ENGINE_OPENSSL:
if ($this->current_key_length != 128 || strlen($this->orig_key) < 16) {
return false;
}
$this->cipher_name_openssl_ecb = 'rc2-ecb';
$this->cipher_name_openssl = 'rc2-' . $this->_openssl_translate_mode();
}
return parent::isValidEngine($engine);
}
/**
* Sets the key length.
*
* Valid key lengths are 8 to 1024.
* Calling this function after setting the key has no effect until the next
* \phpseclib\Crypt\RC2::setKey() call.
*
* @access public
* @param int $length in bits
*/
function setKeyLength($length)
{
if ($length < 8) {
$this->default_key_length = 1;
} elseif ($length > 1024) {
$this->default_key_length = 128;
} else {
$this->default_key_length = $length;
}
$this->current_key_length = $this->default_key_length;
parent::setKeyLength($length);
}
/**
* Returns the current key length
*
* @access public
* @return int
*/
function getKeyLength()
{
return $this->current_key_length;
}
/**
* Sets the key.
*
* Keys can be of any length. RC2, itself, uses 8 to 1024 bit keys (eg.
* strlen($key) <= 128), however, we only use the first 128 bytes if $key
* has more then 128 bytes in it, and set $key to a single null byte if
* it is empty.
*
* If the key is not explicitly set, it'll be assumed to be a single
* null byte.
*
* @see \phpseclib\Crypt\Base::setKey()
* @access public
* @param string $key
* @param int $t1 optional Effective key length in bits.
*/
function setKey($key, $t1 = 0)
{
$this->orig_key = $key;
if ($t1 <= 0) {
$t1 = $this->default_key_length;
} elseif ($t1 > 1024) {
$t1 = 1024;
}
$this->current_key_length = $t1;
// Key byte count should be 1..128.
$key = strlen($key) ? substr($key, 0, 128) : "\x00";
$t = strlen($key);
// The mcrypt RC2 implementation only supports effective key length
// of 1024 bits. It is however possible to handle effective key
// lengths in range 1..1024 by expanding the key and applying
// inverse pitable mapping to the first byte before submitting it
// to mcrypt.
// Key expansion.
$l = array_values(unpack('C*', $key));
$t8 = ($t1 + 7) >> 3;
$tm = 0xFF >> (8 * $t8 - $t1);
// Expand key.
$pitable = $this->pitable;
for ($i = $t; $i < 128; $i++) {
$l[$i] = $pitable[$l[$i - 1] + $l[$i - $t]];
}
$i = 128 - $t8;
$l[$i] = $pitable[$l[$i] & $tm];
while ($i--) {
$l[$i] = $pitable[$l[$i + 1] ^ $l[$i + $t8]];
}
// Prepare the key for mcrypt.
$l[0] = $this->invpitable[$l[0]];
array_unshift($l, 'C*');
parent::setKey(call_user_func_array('pack', $l));
}
/**
* Encrypts a message.
*
* Mostly a wrapper for \phpseclib\Crypt\Base::encrypt, with some additional OpenSSL handling code
*
* @see self::decrypt()
* @access public
* @param string $plaintext
* @return string $ciphertext
*/
function encrypt($plaintext)
{
if ($this->engine == self::ENGINE_OPENSSL) {
$temp = $this->key;
$this->key = $this->orig_key;
$result = parent::encrypt($plaintext);
$this->key = $temp;
return $result;
}
return parent::encrypt($plaintext);
}
/**
* Decrypts a message.
*
* Mostly a wrapper for \phpseclib\Crypt\Base::decrypt, with some additional OpenSSL handling code
*
* @see self::encrypt()
* @access public
* @param string $ciphertext
* @return string $plaintext
*/
function decrypt($ciphertext)
{
if ($this->engine == self::ENGINE_OPENSSL) {
$temp = $this->key;
$this->key = $this->orig_key;
$result = parent::decrypt($ciphertext);
$this->key = $temp;
return $result;
}
return parent::decrypt($ciphertext);
}
/**
* Encrypts a block
*
* @see \phpseclib\Crypt\Base::_encryptBlock()
* @see \phpseclib\Crypt\Base::encrypt()
* @access private
* @param string $in
* @return string
*/
function _encryptBlock($in)
{
list($r0, $r1, $r2, $r3) = array_values(unpack('v*', $in));
$keys = $this->keys;
$limit = 20;
$actions = array($limit => 44, 44 => 64);
$j = 0;
for (;;) {
// Mixing round.
$r0 = (($r0 + $keys[$j++] + ((($r1 ^ $r2) & $r3) ^ $r1)) & 0xFFFF) << 1;
$r0 |= $r0 >> 16;
$r1 = (($r1 + $keys[$j++] + ((($r2 ^ $r3) & $r0) ^ $r2)) & 0xFFFF) << 2;
$r1 |= $r1 >> 16;
$r2 = (($r2 + $keys[$j++] + ((($r3 ^ $r0) & $r1) ^ $r3)) & 0xFFFF) << 3;
$r2 |= $r2 >> 16;
$r3 = (($r3 + $keys[$j++] + ((($r0 ^ $r1) & $r2) ^ $r0)) & 0xFFFF) << 5;
$r3 |= $r3 >> 16;
if ($j === $limit) {
if ($limit === 64) {
break;
}
// Mashing round.
$r0 += $keys[$r3 & 0x3F];
$r1 += $keys[$r0 & 0x3F];
$r2 += $keys[$r1 & 0x3F];
$r3 += $keys[$r2 & 0x3F];
$limit = $actions[$limit];
}
}
return pack('vvvv', $r0, $r1, $r2, $r3);
}
/**
* Decrypts a block
*
* @see \phpseclib\Crypt\Base::_decryptBlock()
* @see \phpseclib\Crypt\Base::decrypt()
* @access private
* @param string $in
* @return string
*/
function _decryptBlock($in)
{
list($r0, $r1, $r2, $r3) = array_values(unpack('v*', $in));
$keys = $this->keys;
$limit = 44;
$actions = array($limit => 20, 20 => 0);
$j = 64;
for (;;) {
// R-mixing round.
$r3 = ($r3 | ($r3 << 16)) >> 5;
$r3 = ($r3 - $keys[--$j] - ((($r0 ^ $r1) & $r2) ^ $r0)) & 0xFFFF;
$r2 = ($r2 | ($r2 << 16)) >> 3;
$r2 = ($r2 - $keys[--$j] - ((($r3 ^ $r0) & $r1) ^ $r3)) & 0xFFFF;
$r1 = ($r1 | ($r1 << 16)) >> 2;
$r1 = ($r1 - $keys[--$j] - ((($r2 ^ $r3) & $r0) ^ $r2)) & 0xFFFF;
$r0 = ($r0 | ($r0 << 16)) >> 1;
$r0 = ($r0 - $keys[--$j] - ((($r1 ^ $r2) & $r3) ^ $r1)) & 0xFFFF;
if ($j === $limit) {
if ($limit === 0) {
break;
}
// R-mashing round.
$r3 = ($r3 - $keys[$r2 & 0x3F]) & 0xFFFF;
$r2 = ($r2 - $keys[$r1 & 0x3F]) & 0xFFFF;
$r1 = ($r1 - $keys[$r0 & 0x3F]) & 0xFFFF;
$r0 = ($r0 - $keys[$r3 & 0x3F]) & 0xFFFF;
$limit = $actions[$limit];
}
}
return pack('vvvv', $r0, $r1, $r2, $r3);
}
/**
* Setup the \phpseclib\Crypt\Base::ENGINE_MCRYPT $engine
*
* @see \phpseclib\Crypt\Base::_setupMcrypt()
* @access private
*/
function _setupMcrypt()
{
if (!isset($this->key)) {
$this->setKey('');
}
parent::_setupMcrypt();
}
/**
* Creates the key schedule
*
* @see \phpseclib\Crypt\Base::_setupKey()
* @access private
*/
function _setupKey()
{
if (!isset($this->key)) {
$this->setKey('');
}
// Key has already been expanded in \phpseclib\Crypt\RC2::setKey():
// Only the first value must be altered.
$l = unpack('Ca/Cb/v*', $this->key);
array_unshift($l, $this->pitable[$l['a']] | ($l['b'] << 8));
unset($l['a']);
unset($l['b']);
$this->keys = $l;
}
/**
* Setup the performance-optimized function for de/encrypt()
*
* @see \phpseclib\Crypt\Base::_setupInlineCrypt()
* @access private
*/
function _setupInlineCrypt()
{
$lambda_functions =& self::_getLambdaFunctions();
// The first 10 generated $lambda_functions will use the $keys hardcoded as integers
// for the mixing rounds, for better inline crypt performance [~20% faster].
// But for memory reason we have to limit those ultra-optimized $lambda_functions to an amount of 10.
// (Currently, for Crypt_RC2, one generated $lambda_function cost on php5.5@32bit ~60kb unfreeable mem and ~100kb on php5.5@64bit)
$gen_hi_opt_code = (bool)(count($lambda_functions) < 10);
// Generation of a unique hash for our generated code
$code_hash = "Crypt_RC2, {$this->mode}";
if ($gen_hi_opt_code) {
$code_hash = str_pad($code_hash, 32) . $this->_hashInlineCryptFunction($this->key);
}
// Is there a re-usable $lambda_functions in there?
// If not, we have to create it.
if (!isset($lambda_functions[$code_hash])) {
// Init code for both, encrypt and decrypt.
$init_crypt = '$keys = $self->keys;';
switch (true) {
case $gen_hi_opt_code:
$keys = $this->keys;
default:
$keys = array();
foreach ($this->keys as $k => $v) {
$keys[$k] = '$keys[' . $k . ']';
}
}
// $in is the current 8 bytes block which has to be en/decrypt
$encrypt_block = $decrypt_block = '
$in = unpack("v4", $in);
$r0 = $in[1];
$r1 = $in[2];
$r2 = $in[3];
$r3 = $in[4];
';
// Create code for encryption.
$limit = 20;
$actions = array($limit => 44, 44 => 64);
$j = 0;
for (;;) {
// Mixing round.
$encrypt_block .= '
$r0 = (($r0 + ' . $keys[$j++] . ' +
((($r1 ^ $r2) & $r3) ^ $r1)) & 0xFFFF) << 1;
$r0 |= $r0 >> 16;
$r1 = (($r1 + ' . $keys[$j++] . ' +
((($r2 ^ $r3) & $r0) ^ $r2)) & 0xFFFF) << 2;
$r1 |= $r1 >> 16;
$r2 = (($r2 + ' . $keys[$j++] . ' +
((($r3 ^ $r0) & $r1) ^ $r3)) & 0xFFFF) << 3;
$r2 |= $r2 >> 16;
$r3 = (($r3 + ' . $keys[$j++] . ' +
((($r0 ^ $r1) & $r2) ^ $r0)) & 0xFFFF) << 5;
$r3 |= $r3 >> 16;';
if ($j === $limit) {
if ($limit === 64) {
break;
}
// Mashing round.
$encrypt_block .= '
$r0 += $keys[$r3 & 0x3F];
$r1 += $keys[$r0 & 0x3F];
$r2 += $keys[$r1 & 0x3F];
$r3 += $keys[$r2 & 0x3F];';
$limit = $actions[$limit];
}
}
$encrypt_block .= '$in = pack("v4", $r0, $r1, $r2, $r3);';
// Create code for decryption.
$limit = 44;
$actions = array($limit => 20, 20 => 0);
$j = 64;
for (;;) {
// R-mixing round.
$decrypt_block .= '
$r3 = ($r3 | ($r3 << 16)) >> 5;
$r3 = ($r3 - ' . $keys[--$j] . ' -
((($r0 ^ $r1) & $r2) ^ $r0)) & 0xFFFF;
$r2 = ($r2 | ($r2 << 16)) >> 3;
$r2 = ($r2 - ' . $keys[--$j] . ' -
((($r3 ^ $r0) & $r1) ^ $r3)) & 0xFFFF;
$r1 = ($r1 | ($r1 << 16)) >> 2;
$r1 = ($r1 - ' . $keys[--$j] . ' -
((($r2 ^ $r3) & $r0) ^ $r2)) & 0xFFFF;
$r0 = ($r0 | ($r0 << 16)) >> 1;
$r0 = ($r0 - ' . $keys[--$j] . ' -
((($r1 ^ $r2) & $r3) ^ $r1)) & 0xFFFF;';
if ($j === $limit) {
if ($limit === 0) {
break;
}
// R-mashing round.
$decrypt_block .= '
$r3 = ($r3 - $keys[$r2 & 0x3F]) & 0xFFFF;
$r2 = ($r2 - $keys[$r1 & 0x3F]) & 0xFFFF;
$r1 = ($r1 - $keys[$r0 & 0x3F]) & 0xFFFF;
$r0 = ($r0 - $keys[$r3 & 0x3F]) & 0xFFFF;';
$limit = $actions[$limit];
}
}
$decrypt_block .= '$in = pack("v4", $r0, $r1, $r2, $r3);';
// Creates the inline-crypt function
$lambda_functions[$code_hash] = $this->_createInlineCryptFunction(
array(
'init_crypt' => $init_crypt,
'encrypt_block' => $encrypt_block,
'decrypt_block' => $decrypt_block
)
);
}
// Set the inline-crypt function as callback in: $this->inline_crypt
$this->inline_crypt = $lambda_functions[$code_hash];
}
}
PK ��$Z]i�lU1 U1 $ phpseclib/phpseclib/Crypt/Random.phpnu �[��� <?php
/**
* Random Number Generator
*
* PHP version 5
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* echo bin2hex(\phpseclib\Crypt\Random::string(8));
* ?>
* </code>
*
* @category Crypt
* @package Random
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2007 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt;
/**
* Pure-PHP Random Number Generator
*
* @package Random
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class Random
{
/**
* Generate a random string.
*
* Although microoptimizations are generally discouraged as they impair readability this function is ripe with
* microoptimizations because this function has the potential of being called a huge number of times.
* eg. for RSA key generation.
*
* @param int $length
* @return string
*/
static function string($length)
{
if (!$length) {
return '';
}
if (version_compare(PHP_VERSION, '7.0.0', '>=')) {
try {
return \random_bytes($length);
} catch (\Throwable $e) {
// If a sufficient source of randomness is unavailable, random_bytes() will throw an
// object that implements the Throwable interface (Exception, TypeError, Error).
// We don't actually need to do anything here. The string() method should just continue
// as normal. Note, however, that if we don't have a sufficient source of randomness for
// random_bytes(), most of the other calls here will fail too, so we'll end up using
// the PHP implementation.
}
}
if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
// method 1. prior to PHP 5.3 this would call rand() on windows hence the function_exists('class_alias') call.
// ie. class_alias is a function that was introduced in PHP 5.3
if (extension_loaded('mcrypt') && function_exists('class_alias')) {
return @mcrypt_create_iv($length);
}
// method 2. openssl_random_pseudo_bytes was introduced in PHP 5.3.0 but prior to PHP 5.3.4 there was,
// to quote <http://php.net/ChangeLog-5.php#5.3.4>, "possible blocking behavior". as of 5.3.4
// openssl_random_pseudo_bytes and mcrypt_create_iv do the exact same thing on Windows. ie. they both
// call php_win32_get_random_bytes():
//
// https://github.com/php/php-src/blob/7014a0eb6d1611151a286c0ff4f2238f92c120d6/ext/openssl/openssl.c#L5008
// https://github.com/php/php-src/blob/7014a0eb6d1611151a286c0ff4f2238f92c120d6/ext/mcrypt/mcrypt.c#L1392
//
// php_win32_get_random_bytes() is defined thusly:
//
// https://github.com/php/php-src/blob/7014a0eb6d1611151a286c0ff4f2238f92c120d6/win32/winutil.c#L80
//
// we're calling it, all the same, in the off chance that the mcrypt extension is not available
if (extension_loaded('openssl') && version_compare(PHP_VERSION, '5.3.4', '>=')) {
return openssl_random_pseudo_bytes($length);
}
} else {
// method 1. the fastest
if (extension_loaded('openssl')) {
return openssl_random_pseudo_bytes($length);
}
// method 2
static $fp = true;
if ($fp === true) {
// warning's will be output unles the error suppression operator is used. errors such as
// "open_basedir restriction in effect", "Permission denied", "No such file or directory", etc.
$fp = @fopen('/dev/urandom', 'rb');
}
if ($fp !== true && $fp !== false) { // surprisingly faster than !is_bool() or is_resource()
$temp = fread($fp, $length);
if (strlen($temp) == $length) {
return $temp;
}
}
// method 3. pretty much does the same thing as method 2 per the following url:
// https://github.com/php/php-src/blob/7014a0eb6d1611151a286c0ff4f2238f92c120d6/ext/mcrypt/mcrypt.c#L1391
// surprisingly slower than method 2. maybe that's because mcrypt_create_iv does a bunch of error checking that we're
// not doing. regardless, this'll only be called if this PHP script couldn't open /dev/urandom due to open_basedir
// restrictions or some such
if (extension_loaded('mcrypt')) {
return @mcrypt_create_iv($length, MCRYPT_DEV_URANDOM);
}
}
// at this point we have no choice but to use a pure-PHP CSPRNG
// cascade entropy across multiple PHP instances by fixing the session and collecting all
// environmental variables, including the previous session data and the current session
// data.
//
// mt_rand seeds itself by looking at the PID and the time, both of which are (relatively)
// easy to guess at. linux uses mouse clicks, keyboard timings, etc, as entropy sources, but
// PHP isn't low level to be able to use those as sources and on a web server there's not likely
// going to be a ton of keyboard or mouse action. web servers do have one thing that we can use
// however, a ton of people visiting the website. obviously you don't want to base your seeding
// soley on parameters a potential attacker sends but (1) not everything in $_SERVER is controlled
// by the user and (2) this isn't just looking at the data sent by the current user - it's based
// on the data sent by all users. one user requests the page and a hash of their info is saved.
// another user visits the page and the serialization of their data is utilized along with the
// server envirnment stuff and a hash of the previous http request data (which itself utilizes
// a hash of the session data before that). certainly an attacker should be assumed to have
// full control over his own http requests. he, however, is not going to have control over
// everyone's http requests.
static $crypto = false, $v;
if ($crypto === false) {
// save old session data
$old_session_id = session_id();
$old_use_cookies = ini_get('session.use_cookies');
$old_session_cache_limiter = session_cache_limiter();
$_OLD_SESSION = isset($_SESSION) ? $_SESSION : false;
if ($old_session_id != '') {
session_write_close();
}
session_id(1);
ini_set('session.use_cookies', 0);
session_cache_limiter('');
session_start();
$v = $seed = $_SESSION['seed'] = pack('H*', sha1(
(isset($_SERVER) ? phpseclib_safe_serialize($_SERVER) : '') .
(isset($_POST) ? phpseclib_safe_serialize($_POST) : '') .
(isset($_GET) ? phpseclib_safe_serialize($_GET) : '') .
(isset($_COOKIE) ? phpseclib_safe_serialize($_COOKIE) : '') .
// as of PHP 8.1 $GLOBALS cann't be accessed by reference, which eliminates
// the need for phpseclib_safe_serialize. see https://wiki.php.net/rfc/restrict_globals_usage
// for more info
(version_compare(PHP_VERSION, '8.1.0', '>=') ? serialize($GLOBALS) : phpseclib_safe_serialize($GLOBALS)) .
phpseclib_safe_serialize($_SESSION) .
phpseclib_safe_serialize($_OLD_SESSION)
));
if (!isset($_SESSION['count'])) {
$_SESSION['count'] = 0;
}
$_SESSION['count']++;
session_write_close();
// restore old session data
if ($old_session_id != '') {
session_id($old_session_id);
session_start();
ini_set('session.use_cookies', $old_use_cookies);
session_cache_limiter($old_session_cache_limiter);
} else {
if ($_OLD_SESSION !== false) {
$_SESSION = $_OLD_SESSION;
unset($_OLD_SESSION);
} else {
unset($_SESSION);
}
}
// in SSH2 a shared secret and an exchange hash are generated through the key exchange process.
// the IV client to server is the hash of that "nonce" with the letter A and for the encryption key it's the letter C.
// if the hash doesn't produce enough a key or an IV that's long enough concat successive hashes of the
// original hash and the current hash. we'll be emulating that. for more info see the following URL:
//
// http://tools.ietf.org/html/rfc4253#section-7.2
//
// see the is_string($crypto) part for an example of how to expand the keys
$key = pack('H*', sha1($seed . 'A'));
$iv = pack('H*', sha1($seed . 'C'));
// ciphers are used as per the nist.gov link below. also, see this link:
//
// http://en.wikipedia.org/wiki/Cryptographically_secure_pseudorandom_number_generator#Designs_based_on_cryptographic_primitives
switch (true) {
case class_exists('\phpseclib\Crypt\AES'):
$crypto = new AES(Base::MODE_CTR);
break;
case class_exists('\phpseclib\Crypt\Twofish'):
$crypto = new Twofish(Base::MODE_CTR);
break;
case class_exists('\phpseclib\Crypt\Blowfish'):
$crypto = new Blowfish(Base::MODE_CTR);
break;
case class_exists('\phpseclib\Crypt\TripleDES'):
$crypto = new TripleDES(Base::MODE_CTR);
break;
case class_exists('\phpseclib\Crypt\DES'):
$crypto = new DES(Base::MODE_CTR);
break;
case class_exists('\phpseclib\Crypt\RC4'):
$crypto = new RC4();
break;
default:
user_error(__CLASS__ . ' requires at least one symmetric cipher be loaded');
return false;
}
$crypto->setKey($key);
$crypto->setIV($iv);
$crypto->enableContinuousBuffer();
}
//return $crypto->encrypt(str_repeat("\0", $length));
// the following is based off of ANSI X9.31:
//
// http://csrc.nist.gov/groups/STM/cavp/documents/rng/931rngext.pdf
//
// OpenSSL uses that same standard for it's random numbers:
//
// http://www.opensource.apple.com/source/OpenSSL/OpenSSL-38/openssl/fips-1.0/rand/fips_rand.c
// (do a search for "ANS X9.31 A.2.4")
$result = '';
while (strlen($result) < $length) {
$i = $crypto->encrypt(microtime()); // strlen(microtime()) == 21
$r = $crypto->encrypt($i ^ $v); // strlen($v) == 20
$v = $crypto->encrypt($r ^ $i); // strlen($r) == 20
$result.= $r;
}
return substr($result, 0, $length);
}
}
if (!function_exists('phpseclib_safe_serialize')) {
/**
* Safely serialize variables
*
* If a class has a private __sleep() method it'll give a fatal error on PHP 5.2 and earlier.
* PHP 5.3 will emit a warning.
*
* @param mixed $arr
* @access public
*/
function phpseclib_safe_serialize(&$arr)
{
if (is_object($arr)) {
return '';
}
if (!is_array($arr)) {
return serialize($arr);
}
// prevent circular array recursion
if (isset($arr['__phpseclib_marker'])) {
return '';
}
$safearr = array();
$arr['__phpseclib_marker'] = true;
foreach (array_keys($arr) as $key) {
// do not recurse on the '__phpseclib_marker' key itself, for smaller memory usage
if ($key !== '__phpseclib_marker') {
$safearr[$key] = phpseclib_safe_serialize($arr[$key]);
}
}
unset($arr['__phpseclib_marker']);
return serialize($safearr);
}
}
PK ��$Z',�� � & phpseclib/phpseclib/Crypt/Rijndael.phpnu �[��� <?php
/**
* Pure-PHP implementation of Rijndael.
*
* Uses mcrypt, if available/possible, and an internal implementation, otherwise.
*
* PHP version 5
*
* If {@link self::setBlockLength() setBlockLength()} isn't called, it'll be assumed to be 128 bits. If
* {@link self::setKeyLength() setKeyLength()} isn't called, it'll be calculated from
* {@link self::setKey() setKey()}. ie. if the key is 128-bits, the key length will be 128-bits. If it's
* 136-bits it'll be null-padded to 192-bits and 192 bits will be the key length until
* {@link self::setKey() setKey()} is called, again, at which point, it'll be recalculated.
*
* Not all Rijndael implementations may support 160-bits or 224-bits as the block length / key length. mcrypt, for example,
* does not. AES, itself, only supports block lengths of 128 and key lengths of 128, 192, and 256.
* {@link http://csrc.nist.gov/archive/aes/rijndael/Rijndael-ammended.pdf#page=10 Rijndael-ammended.pdf#page=10} defines the
* algorithm for block lengths of 192 and 256 but not for block lengths / key lengths of 160 and 224. Indeed, 160 and 224
* are first defined as valid key / block lengths in
* {@link http://csrc.nist.gov/archive/aes/rijndael/Rijndael-ammended.pdf#page=44 Rijndael-ammended.pdf#page=44}:
* Extensions: Other block and Cipher Key lengths.
* Note: Use of 160/224-bit Keys must be explicitly set by setKeyLength(160) respectively setKeyLength(224).
*
* {@internal The variable names are the same as those in
* {@link http://www.csrc.nist.gov/publications/fips/fips197/fips-197.pdf#page=10 fips-197.pdf#page=10}.}}
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $rijndael = new \phpseclib\Crypt\Rijndael();
*
* $rijndael->setKey('abcdefghijklmnop');
*
* $size = 10 * 1024;
* $plaintext = '';
* for ($i = 0; $i < $size; $i++) {
* $plaintext.= 'a';
* }
*
* echo $rijndael->decrypt($rijndael->encrypt($plaintext));
* ?>
* </code>
*
* @category Crypt
* @package Rijndael
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2008 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt;
/**
* Pure-PHP implementation of Rijndael.
*
* @package Rijndael
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class Rijndael extends Base
{
/**
* The mcrypt specific name of the cipher
*
* Mcrypt is useable for 128/192/256-bit $block_size/$key_length. For 160/224 not.
* \phpseclib\Crypt\Rijndael determines automatically whether mcrypt is useable
* or not for the current $block_size/$key_length.
* In case of, $cipher_name_mcrypt will be set dynamically at run time accordingly.
*
* @see \phpseclib\Crypt\Base::cipher_name_mcrypt
* @see \phpseclib\Crypt\Base::engine
* @see self::isValidEngine()
* @var string
* @access private
*/
var $cipher_name_mcrypt = 'rijndael-128';
/**
* The default salt used by setPassword()
*
* @see \phpseclib\Crypt\Base::password_default_salt
* @see \phpseclib\Crypt\Base::setPassword()
* @var string
* @access private
*/
var $password_default_salt = 'phpseclib';
/**
* The Key Schedule
*
* @see self::_setup()
* @var array
* @access private
*/
var $w;
/**
* The Inverse Key Schedule
*
* @see self::_setup()
* @var array
* @access private
*/
var $dw;
/**
* The Block Length divided by 32
*
* @see self::setBlockLength()
* @var int
* @access private
* @internal The max value is 256 / 32 = 8, the min value is 128 / 32 = 4. Exists in conjunction with $block_size
* because the encryption / decryption / key schedule creation requires this number and not $block_size. We could
* derive this from $block_size or vice versa, but that'd mean we'd have to do multiple shift operations, so in lieu
* of that, we'll just precompute it once.
*/
var $Nb = 4;
/**
* The Key Length (in bytes)
*
* @see self::setKeyLength()
* @var int
* @access private
* @internal The max value is 256 / 8 = 32, the min value is 128 / 8 = 16. Exists in conjunction with $Nk
* because the encryption / decryption / key schedule creation requires this number and not $key_length. We could
* derive this from $key_length or vice versa, but that'd mean we'd have to do multiple shift operations, so in lieu
* of that, we'll just precompute it once.
*/
var $key_length = 16;
/**
* The Key Length divided by 32
*
* @see self::setKeyLength()
* @var int
* @access private
* @internal The max value is 256 / 32 = 8, the min value is 128 / 32 = 4
*/
var $Nk = 4;
/**
* The Number of Rounds
*
* @var int
* @access private
* @internal The max value is 14, the min value is 10.
*/
var $Nr;
/**
* Shift offsets
*
* @var array
* @access private
*/
var $c;
/**
* Holds the last used key- and block_size information
*
* @var array
* @access private
*/
var $kl;
/**
* Sets the key length.
*
* Valid key lengths are 128, 160, 192, 224, and 256. If the length is less than 128, it will be rounded up to
* 128. If the length is greater than 128 and invalid, it will be rounded down to the closest valid amount.
*
* Note: phpseclib extends Rijndael (and AES) for using 160- and 224-bit keys but they are officially not defined
* and the most (if not all) implementations are not able using 160/224-bit keys but round/pad them up to
* 192/256 bits as, for example, mcrypt will do.
*
* That said, if you want be compatible with other Rijndael and AES implementations,
* you should not setKeyLength(160) or setKeyLength(224).
*
* Additional: In case of 160- and 224-bit keys, phpseclib will/can, for that reason, not use
* the mcrypt php extension, even if available.
* This results then in slower encryption.
*
* @access public
* @param int $length
*/
function setKeyLength($length)
{
switch (true) {
case $length <= 128:
$this->key_length = 16;
break;
case $length <= 160:
$this->key_length = 20;
break;
case $length <= 192:
$this->key_length = 24;
break;
case $length <= 224:
$this->key_length = 28;
break;
default:
$this->key_length = 32;
}
parent::setKeyLength($length);
}
/**
* Sets the block length
*
* Valid block lengths are 128, 160, 192, 224, and 256. If the length is less than 128, it will be rounded up to
* 128. If the length is greater than 128 and invalid, it will be rounded down to the closest valid amount.
*
* @access public
* @param int $length
*/
function setBlockLength($length)
{
$length >>= 5;
if ($length > 8) {
$length = 8;
} elseif ($length < 4) {
$length = 4;
}
$this->Nb = $length;
$this->block_size = $length << 2;
$this->changed = true;
$this->_setEngine();
}
/**
* Test for engine validity
*
* This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
*
* @see \phpseclib\Crypt\Base::__construct()
* @param int $engine
* @access public
* @return bool
*/
function isValidEngine($engine)
{
switch ($engine) {
case self::ENGINE_OPENSSL:
if ($this->block_size != 16) {
return false;
}
$this->cipher_name_openssl_ecb = 'aes-' . ($this->key_length << 3) . '-ecb';
$this->cipher_name_openssl = 'aes-' . ($this->key_length << 3) . '-' . $this->_openssl_translate_mode();
break;
case self::ENGINE_MCRYPT:
$this->cipher_name_mcrypt = 'rijndael-' . ($this->block_size << 3);
if ($this->key_length % 8) { // is it a 160/224-bit key?
// mcrypt is not usable for them, only for 128/192/256-bit keys
return false;
}
}
return parent::isValidEngine($engine);
}
/**
* Encrypts a block
*
* @access private
* @param string $in
* @return string
*/
function _encryptBlock($in)
{
static $tables;
if (empty($tables)) {
$tables = &$this->_getTables();
}
$t0 = $tables[0];
$t1 = $tables[1];
$t2 = $tables[2];
$t3 = $tables[3];
$sbox = $tables[4];
$state = array();
$words = unpack('N*', $in);
$c = $this->c;
$w = $this->w;
$Nb = $this->Nb;
$Nr = $this->Nr;
// addRoundKey
$wc = $Nb - 1;
foreach ($words as $word) {
$state[] = $word ^ $w[++$wc];
}
// fips-197.pdf#page=19, "Figure 5. Pseudo Code for the Cipher", states that this loop has four components -
// subBytes, shiftRows, mixColumns, and addRoundKey. fips-197.pdf#page=30, "Implementation Suggestions Regarding
// Various Platforms" suggests that performs enhanced implementations are described in Rijndael-ammended.pdf.
// Rijndael-ammended.pdf#page=20, "Implementation aspects / 32-bit processor", discusses such an optimization.
// Unfortunately, the description given there is not quite correct. Per aes.spec.v316.pdf#page=19 [1],
// equation (7.4.7) is supposed to use addition instead of subtraction, so we'll do that here, as well.
// [1] http://fp.gladman.plus.com/cryptography_technology/rijndael/aes.spec.v316.pdf
$temp = array();
for ($round = 1; $round < $Nr; ++$round) {
$i = 0; // $c[0] == 0
$j = $c[1];
$k = $c[2];
$l = $c[3];
while ($i < $Nb) {
$temp[$i] = $t0[$state[$i] >> 24 & 0x000000FF] ^
$t1[$state[$j] >> 16 & 0x000000FF] ^
$t2[$state[$k] >> 8 & 0x000000FF] ^
$t3[$state[$l] & 0x000000FF] ^
$w[++$wc];
++$i;
$j = ($j + 1) % $Nb;
$k = ($k + 1) % $Nb;
$l = ($l + 1) % $Nb;
}
$state = $temp;
}
// subWord
for ($i = 0; $i < $Nb; ++$i) {
$state[$i] = $sbox[$state[$i] & 0x000000FF] |
($sbox[$state[$i] >> 8 & 0x000000FF] << 8) |
($sbox[$state[$i] >> 16 & 0x000000FF] << 16) |
($sbox[$state[$i] >> 24 & 0x000000FF] << 24);
}
// shiftRows + addRoundKey
$i = 0; // $c[0] == 0
$j = $c[1];
$k = $c[2];
$l = $c[3];
while ($i < $Nb) {
$temp[$i] = ($state[$i] & intval(0xFF000000)) ^
($state[$j] & 0x00FF0000) ^
($state[$k] & 0x0000FF00) ^
($state[$l] & 0x000000FF) ^
$w[$i];
++$i;
$j = ($j + 1) % $Nb;
$k = ($k + 1) % $Nb;
$l = ($l + 1) % $Nb;
}
switch ($Nb) {
case 8:
return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5], $temp[6], $temp[7]);
case 7:
return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5], $temp[6]);
case 6:
return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5]);
case 5:
return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4]);
default:
return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3]);
}
}
/**
* Decrypts a block
*
* @access private
* @param string $in
* @return string
*/
function _decryptBlock($in)
{
static $invtables;
if (empty($invtables)) {
$invtables = &$this->_getInvTables();
}
$dt0 = $invtables[0];
$dt1 = $invtables[1];
$dt2 = $invtables[2];
$dt3 = $invtables[3];
$isbox = $invtables[4];
$state = array();
$words = unpack('N*', $in);
$c = $this->c;
$dw = $this->dw;
$Nb = $this->Nb;
$Nr = $this->Nr;
// addRoundKey
$wc = $Nb - 1;
foreach ($words as $word) {
$state[] = $word ^ $dw[++$wc];
}
$temp = array();
for ($round = $Nr - 1; $round > 0; --$round) {
$i = 0; // $c[0] == 0
$j = $Nb - $c[1];
$k = $Nb - $c[2];
$l = $Nb - $c[3];
while ($i < $Nb) {
$temp[$i] = $dt0[$state[$i] >> 24 & 0x000000FF] ^
$dt1[$state[$j] >> 16 & 0x000000FF] ^
$dt2[$state[$k] >> 8 & 0x000000FF] ^
$dt3[$state[$l] & 0x000000FF] ^
$dw[++$wc];
++$i;
$j = ($j + 1) % $Nb;
$k = ($k + 1) % $Nb;
$l = ($l + 1) % $Nb;
}
$state = $temp;
}
// invShiftRows + invSubWord + addRoundKey
$i = 0; // $c[0] == 0
$j = $Nb - $c[1];
$k = $Nb - $c[2];
$l = $Nb - $c[3];
while ($i < $Nb) {
$word = ($state[$i] & intval(0xFF000000)) |
($state[$j] & 0x00FF0000) |
($state[$k] & 0x0000FF00) |
($state[$l] & 0x000000FF);
$temp[$i] = $dw[$i] ^ ($isbox[$word & 0x000000FF] |
($isbox[$word >> 8 & 0x000000FF] << 8) |
($isbox[$word >> 16 & 0x000000FF] << 16) |
($isbox[$word >> 24 & 0x000000FF] << 24));
++$i;
$j = ($j + 1) % $Nb;
$k = ($k + 1) % $Nb;
$l = ($l + 1) % $Nb;
}
switch ($Nb) {
case 8:
return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5], $temp[6], $temp[7]);
case 7:
return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5], $temp[6]);
case 6:
return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5]);
case 5:
return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4]);
default:
return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3]);
}
}
/**
* Setup the key (expansion)
*
* @see \phpseclib\Crypt\Base::_setupKey()
* @access private
*/
function _setupKey()
{
// Each number in $rcon is equal to the previous number multiplied by two in Rijndael's finite field.
// See http://en.wikipedia.org/wiki/Finite_field_arithmetic#Multiplicative_inverse
static $rcon;
if (!isset($rcon)) {
$rcon = array(0,
0x01000000, 0x02000000, 0x04000000, 0x08000000, 0x10000000,
0x20000000, 0x40000000, 0x80000000, 0x1B000000, 0x36000000,
0x6C000000, 0xD8000000, 0xAB000000, 0x4D000000, 0x9A000000,
0x2F000000, 0x5E000000, 0xBC000000, 0x63000000, 0xC6000000,
0x97000000, 0x35000000, 0x6A000000, 0xD4000000, 0xB3000000,
0x7D000000, 0xFA000000, 0xEF000000, 0xC5000000, 0x91000000
);
$rcon = array_map('intval', $rcon);
}
if (isset($this->kl['key']) && $this->key === $this->kl['key'] && $this->key_length === $this->kl['key_length'] && $this->block_size === $this->kl['block_size']) {
// already expanded
return;
}
$this->kl = array('key' => $this->key, 'key_length' => $this->key_length, 'block_size' => $this->block_size);
$this->Nk = $this->key_length >> 2;
// see Rijndael-ammended.pdf#page=44
$this->Nr = max($this->Nk, $this->Nb) + 6;
// shift offsets for Nb = 5, 7 are defined in Rijndael-ammended.pdf#page=44,
// "Table 8: Shift offsets in Shiftrow for the alternative block lengths"
// shift offsets for Nb = 4, 6, 8 are defined in Rijndael-ammended.pdf#page=14,
// "Table 2: Shift offsets for different block lengths"
switch ($this->Nb) {
case 4:
case 5:
case 6:
$this->c = array(0, 1, 2, 3);
break;
case 7:
$this->c = array(0, 1, 2, 4);
break;
case 8:
$this->c = array(0, 1, 3, 4);
}
$w = array_values(unpack('N*words', $this->key));
$length = $this->Nb * ($this->Nr + 1);
for ($i = $this->Nk; $i < $length; $i++) {
$temp = $w[$i - 1];
if ($i % $this->Nk == 0) {
// according to <http://php.net/language.types.integer>, "the size of an integer is platform-dependent".
// on a 32-bit machine, it's 32-bits, and on a 64-bit machine, it's 64-bits. on a 32-bit machine,
// 0xFFFFFFFF << 8 == 0xFFFFFF00, but on a 64-bit machine, it equals 0xFFFFFFFF00. as such, doing 'and'
// with 0xFFFFFFFF (or 0xFFFFFF00) on a 32-bit machine is unnecessary, but on a 64-bit machine, it is.
$temp = (($temp << 8) & intval(0xFFFFFF00)) | (($temp >> 24) & 0x000000FF); // rotWord
$temp = $this->_subWord($temp) ^ $rcon[$i / $this->Nk];
} elseif ($this->Nk > 6 && $i % $this->Nk == 4) {
$temp = $this->_subWord($temp);
}
$w[$i] = $w[$i - $this->Nk] ^ $temp;
}
// convert the key schedule from a vector of $Nb * ($Nr + 1) length to a matrix with $Nr + 1 rows and $Nb columns
// and generate the inverse key schedule. more specifically,
// according to <http://csrc.nist.gov/archive/aes/rijndael/Rijndael-ammended.pdf#page=23> (section 5.3.3),
// "The key expansion for the Inverse Cipher is defined as follows:
// 1. Apply the Key Expansion.
// 2. Apply InvMixColumn to all Round Keys except the first and the last one."
// also, see fips-197.pdf#page=27, "5.3.5 Equivalent Inverse Cipher"
list($dt0, $dt1, $dt2, $dt3) = $this->_getInvTables();
$temp = $this->w = $this->dw = array();
for ($i = $row = $col = 0; $i < $length; $i++, $col++) {
if ($col == $this->Nb) {
if ($row == 0) {
$this->dw[0] = $this->w[0];
} else {
// subWord + invMixColumn + invSubWord = invMixColumn
$j = 0;
while ($j < $this->Nb) {
$dw = $this->_subWord($this->w[$row][$j]);
$temp[$j] = $dt0[$dw >> 24 & 0x000000FF] ^
$dt1[$dw >> 16 & 0x000000FF] ^
$dt2[$dw >> 8 & 0x000000FF] ^
$dt3[$dw & 0x000000FF];
$j++;
}
$this->dw[$row] = $temp;
}
$col = 0;
$row++;
}
$this->w[$row][$col] = $w[$i];
}
$this->dw[$row] = $this->w[$row];
// Converting to 1-dim key arrays (both ascending)
$this->dw = array_reverse($this->dw);
$w = array_pop($this->w);
$dw = array_pop($this->dw);
foreach ($this->w as $r => $wr) {
foreach ($wr as $c => $wc) {
$w[] = $wc;
$dw[] = $this->dw[$r][$c];
}
}
$this->w = $w;
$this->dw = $dw;
}
/**
* Performs S-Box substitutions
*
* @access private
* @param int $word
*/
function _subWord($word)
{
static $sbox;
if (empty($sbox)) {
list(, , , , $sbox) = $this->_getTables();
}
return $sbox[$word & 0x000000FF] |
($sbox[$word >> 8 & 0x000000FF] << 8) |
($sbox[$word >> 16 & 0x000000FF] << 16) |
($sbox[$word >> 24 & 0x000000FF] << 24);
}
/**
* Provides the mixColumns and sboxes tables
*
* @see self::_encryptBlock()
* @see self::_setupInlineCrypt()
* @see self::_subWord()
* @access private
* @return array &$tables
*/
function &_getTables()
{
static $tables;
if (empty($tables)) {
// according to <http://csrc.nist.gov/archive/aes/rijndael/Rijndael-ammended.pdf#page=19> (section 5.2.1),
// precomputed tables can be used in the mixColumns phase. in that example, they're assigned t0...t3, so
// those are the names we'll use.
$t3 = array_map('intval', array(
// with array_map('intval', ...) we ensure we have only int's and not
// some slower floats converted by php automatically on high values
0x6363A5C6, 0x7C7C84F8, 0x777799EE, 0x7B7B8DF6, 0xF2F20DFF, 0x6B6BBDD6, 0x6F6FB1DE, 0xC5C55491,
0x30305060, 0x01010302, 0x6767A9CE, 0x2B2B7D56, 0xFEFE19E7, 0xD7D762B5, 0xABABE64D, 0x76769AEC,
0xCACA458F, 0x82829D1F, 0xC9C94089, 0x7D7D87FA, 0xFAFA15EF, 0x5959EBB2, 0x4747C98E, 0xF0F00BFB,
0xADADEC41, 0xD4D467B3, 0xA2A2FD5F, 0xAFAFEA45, 0x9C9CBF23, 0xA4A4F753, 0x727296E4, 0xC0C05B9B,
0xB7B7C275, 0xFDFD1CE1, 0x9393AE3D, 0x26266A4C, 0x36365A6C, 0x3F3F417E, 0xF7F702F5, 0xCCCC4F83,
0x34345C68, 0xA5A5F451, 0xE5E534D1, 0xF1F108F9, 0x717193E2, 0xD8D873AB, 0x31315362, 0x15153F2A,
0x04040C08, 0xC7C75295, 0x23236546, 0xC3C35E9D, 0x18182830, 0x9696A137, 0x05050F0A, 0x9A9AB52F,
0x0707090E, 0x12123624, 0x80809B1B, 0xE2E23DDF, 0xEBEB26CD, 0x2727694E, 0xB2B2CD7F, 0x75759FEA,
0x09091B12, 0x83839E1D, 0x2C2C7458, 0x1A1A2E34, 0x1B1B2D36, 0x6E6EB2DC, 0x5A5AEEB4, 0xA0A0FB5B,
0x5252F6A4, 0x3B3B4D76, 0xD6D661B7, 0xB3B3CE7D, 0x29297B52, 0xE3E33EDD, 0x2F2F715E, 0x84849713,
0x5353F5A6, 0xD1D168B9, 0x00000000, 0xEDED2CC1, 0x20206040, 0xFCFC1FE3, 0xB1B1C879, 0x5B5BEDB6,
0x6A6ABED4, 0xCBCB468D, 0xBEBED967, 0x39394B72, 0x4A4ADE94, 0x4C4CD498, 0x5858E8B0, 0xCFCF4A85,
0xD0D06BBB, 0xEFEF2AC5, 0xAAAAE54F, 0xFBFB16ED, 0x4343C586, 0x4D4DD79A, 0x33335566, 0x85859411,
0x4545CF8A, 0xF9F910E9, 0x02020604, 0x7F7F81FE, 0x5050F0A0, 0x3C3C4478, 0x9F9FBA25, 0xA8A8E34B,
0x5151F3A2, 0xA3A3FE5D, 0x4040C080, 0x8F8F8A05, 0x9292AD3F, 0x9D9DBC21, 0x38384870, 0xF5F504F1,
0xBCBCDF63, 0xB6B6C177, 0xDADA75AF, 0x21216342, 0x10103020, 0xFFFF1AE5, 0xF3F30EFD, 0xD2D26DBF,
0xCDCD4C81, 0x0C0C1418, 0x13133526, 0xECEC2FC3, 0x5F5FE1BE, 0x9797A235, 0x4444CC88, 0x1717392E,
0xC4C45793, 0xA7A7F255, 0x7E7E82FC, 0x3D3D477A, 0x6464ACC8, 0x5D5DE7BA, 0x19192B32, 0x737395E6,
0x6060A0C0, 0x81819819, 0x4F4FD19E, 0xDCDC7FA3, 0x22226644, 0x2A2A7E54, 0x9090AB3B, 0x8888830B,
0x4646CA8C, 0xEEEE29C7, 0xB8B8D36B, 0x14143C28, 0xDEDE79A7, 0x5E5EE2BC, 0x0B0B1D16, 0xDBDB76AD,
0xE0E03BDB, 0x32325664, 0x3A3A4E74, 0x0A0A1E14, 0x4949DB92, 0x06060A0C, 0x24246C48, 0x5C5CE4B8,
0xC2C25D9F, 0xD3D36EBD, 0xACACEF43, 0x6262A6C4, 0x9191A839, 0x9595A431, 0xE4E437D3, 0x79798BF2,
0xE7E732D5, 0xC8C8438B, 0x3737596E, 0x6D6DB7DA, 0x8D8D8C01, 0xD5D564B1, 0x4E4ED29C, 0xA9A9E049,
0x6C6CB4D8, 0x5656FAAC, 0xF4F407F3, 0xEAEA25CF, 0x6565AFCA, 0x7A7A8EF4, 0xAEAEE947, 0x08081810,
0xBABAD56F, 0x787888F0, 0x25256F4A, 0x2E2E725C, 0x1C1C2438, 0xA6A6F157, 0xB4B4C773, 0xC6C65197,
0xE8E823CB, 0xDDDD7CA1, 0x74749CE8, 0x1F1F213E, 0x4B4BDD96, 0xBDBDDC61, 0x8B8B860D, 0x8A8A850F,
0x707090E0, 0x3E3E427C, 0xB5B5C471, 0x6666AACC, 0x4848D890, 0x03030506, 0xF6F601F7, 0x0E0E121C,
0x6161A3C2, 0x35355F6A, 0x5757F9AE, 0xB9B9D069, 0x86869117, 0xC1C15899, 0x1D1D273A, 0x9E9EB927,
0xE1E138D9, 0xF8F813EB, 0x9898B32B, 0x11113322, 0x6969BBD2, 0xD9D970A9, 0x8E8E8907, 0x9494A733,
0x9B9BB62D, 0x1E1E223C, 0x87879215, 0xE9E920C9, 0xCECE4987, 0x5555FFAA, 0x28287850, 0xDFDF7AA5,
0x8C8C8F03, 0xA1A1F859, 0x89898009, 0x0D0D171A, 0xBFBFDA65, 0xE6E631D7, 0x4242C684, 0x6868B8D0,
0x4141C382, 0x9999B029, 0x2D2D775A, 0x0F0F111E, 0xB0B0CB7B, 0x5454FCA8, 0xBBBBD66D, 0x16163A2C
));
foreach ($t3 as $t3i) {
$t0[] = (($t3i << 24) & intval(0xFF000000)) | (($t3i >> 8) & 0x00FFFFFF);
$t1[] = (($t3i << 16) & intval(0xFFFF0000)) | (($t3i >> 16) & 0x0000FFFF);
$t2[] = (($t3i << 8) & intval(0xFFFFFF00)) | (($t3i >> 24) & 0x000000FF);
}
$tables = array(
// The Precomputed mixColumns tables t0 - t3
$t0,
$t1,
$t2,
$t3,
// The SubByte S-Box
array(
0x63, 0x7C, 0x77, 0x7B, 0xF2, 0x6B, 0x6F, 0xC5, 0x30, 0x01, 0x67, 0x2B, 0xFE, 0xD7, 0xAB, 0x76,
0xCA, 0x82, 0xC9, 0x7D, 0xFA, 0x59, 0x47, 0xF0, 0xAD, 0xD4, 0xA2, 0xAF, 0x9C, 0xA4, 0x72, 0xC0,
0xB7, 0xFD, 0x93, 0x26, 0x36, 0x3F, 0xF7, 0xCC, 0x34, 0xA5, 0xE5, 0xF1, 0x71, 0xD8, 0x31, 0x15,
0x04, 0xC7, 0x23, 0xC3, 0x18, 0x96, 0x05, 0x9A, 0x07, 0x12, 0x80, 0xE2, 0xEB, 0x27, 0xB2, 0x75,
0x09, 0x83, 0x2C, 0x1A, 0x1B, 0x6E, 0x5A, 0xA0, 0x52, 0x3B, 0xD6, 0xB3, 0x29, 0xE3, 0x2F, 0x84,
0x53, 0xD1, 0x00, 0xED, 0x20, 0xFC, 0xB1, 0x5B, 0x6A, 0xCB, 0xBE, 0x39, 0x4A, 0x4C, 0x58, 0xCF,
0xD0, 0xEF, 0xAA, 0xFB, 0x43, 0x4D, 0x33, 0x85, 0x45, 0xF9, 0x02, 0x7F, 0x50, 0x3C, 0x9F, 0xA8,
0x51, 0xA3, 0x40, 0x8F, 0x92, 0x9D, 0x38, 0xF5, 0xBC, 0xB6, 0xDA, 0x21, 0x10, 0xFF, 0xF3, 0xD2,
0xCD, 0x0C, 0x13, 0xEC, 0x5F, 0x97, 0x44, 0x17, 0xC4, 0xA7, 0x7E, 0x3D, 0x64, 0x5D, 0x19, 0x73,
0x60, 0x81, 0x4F, 0xDC, 0x22, 0x2A, 0x90, 0x88, 0x46, 0xEE, 0xB8, 0x14, 0xDE, 0x5E, 0x0B, 0xDB,
0xE0, 0x32, 0x3A, 0x0A, 0x49, 0x06, 0x24, 0x5C, 0xC2, 0xD3, 0xAC, 0x62, 0x91, 0x95, 0xE4, 0x79,
0xE7, 0xC8, 0x37, 0x6D, 0x8D, 0xD5, 0x4E, 0xA9, 0x6C, 0x56, 0xF4, 0xEA, 0x65, 0x7A, 0xAE, 0x08,
0xBA, 0x78, 0x25, 0x2E, 0x1C, 0xA6, 0xB4, 0xC6, 0xE8, 0xDD, 0x74, 0x1F, 0x4B, 0xBD, 0x8B, 0x8A,
0x70, 0x3E, 0xB5, 0x66, 0x48, 0x03, 0xF6, 0x0E, 0x61, 0x35, 0x57, 0xB9, 0x86, 0xC1, 0x1D, 0x9E,
0xE1, 0xF8, 0x98, 0x11, 0x69, 0xD9, 0x8E, 0x94, 0x9B, 0x1E, 0x87, 0xE9, 0xCE, 0x55, 0x28, 0xDF,
0x8C, 0xA1, 0x89, 0x0D, 0xBF, 0xE6, 0x42, 0x68, 0x41, 0x99, 0x2D, 0x0F, 0xB0, 0x54, 0xBB, 0x16
)
);
}
return $tables;
}
/**
* Provides the inverse mixColumns and inverse sboxes tables
*
* @see self::_decryptBlock()
* @see self::_setupInlineCrypt()
* @see self::_setupKey()
* @access private
* @return array &$tables
*/
function &_getInvTables()
{
static $tables;
if (empty($tables)) {
$dt3 = array_map('intval', array(
0xF4A75051, 0x4165537E, 0x17A4C31A, 0x275E963A, 0xAB6BCB3B, 0x9D45F11F, 0xFA58ABAC, 0xE303934B,
0x30FA5520, 0x766DF6AD, 0xCC769188, 0x024C25F5, 0xE5D7FC4F, 0x2ACBD7C5, 0x35448026, 0x62A38FB5,
0xB15A49DE, 0xBA1B6725, 0xEA0E9845, 0xFEC0E15D, 0x2F7502C3, 0x4CF01281, 0x4697A38D, 0xD3F9C66B,
0x8F5FE703, 0x929C9515, 0x6D7AEBBF, 0x5259DA95, 0xBE832DD4, 0x7421D358, 0xE0692949, 0xC9C8448E,
0xC2896A75, 0x8E7978F4, 0x583E6B99, 0xB971DD27, 0xE14FB6BE, 0x88AD17F0, 0x20AC66C9, 0xCE3AB47D,
0xDF4A1863, 0x1A3182E5, 0x51336097, 0x537F4562, 0x6477E0B1, 0x6BAE84BB, 0x81A01CFE, 0x082B94F9,
0x48685870, 0x45FD198F, 0xDE6C8794, 0x7BF8B752, 0x73D323AB, 0x4B02E272, 0x1F8F57E3, 0x55AB2A66,
0xEB2807B2, 0xB5C2032F, 0xC57B9A86, 0x3708A5D3, 0x2887F230, 0xBFA5B223, 0x036ABA02, 0x16825CED,
0xCF1C2B8A, 0x79B492A7, 0x07F2F0F3, 0x69E2A14E, 0xDAF4CD65, 0x05BED506, 0x34621FD1, 0xA6FE8AC4,
0x2E539D34, 0xF355A0A2, 0x8AE13205, 0xF6EB75A4, 0x83EC390B, 0x60EFAA40, 0x719F065E, 0x6E1051BD,
0x218AF93E, 0xDD063D96, 0x3E05AEDD, 0xE6BD464D, 0x548DB591, 0xC45D0571, 0x06D46F04, 0x5015FF60,
0x98FB2419, 0xBDE997D6, 0x4043CC89, 0xD99E7767, 0xE842BDB0, 0x898B8807, 0x195B38E7, 0xC8EEDB79,
0x7C0A47A1, 0x420FE97C, 0x841EC9F8, 0x00000000, 0x80868309, 0x2BED4832, 0x1170AC1E, 0x5A724E6C,
0x0EFFFBFD, 0x8538560F, 0xAED51E3D, 0x2D392736, 0x0FD9640A, 0x5CA62168, 0x5B54D19B, 0x362E3A24,
0x0A67B10C, 0x57E70F93, 0xEE96D2B4, 0x9B919E1B, 0xC0C54F80, 0xDC20A261, 0x774B695A, 0x121A161C,
0x93BA0AE2, 0xA02AE5C0, 0x22E0433C, 0x1B171D12, 0x090D0B0E, 0x8BC7ADF2, 0xB6A8B92D, 0x1EA9C814,
0xF1198557, 0x75074CAF, 0x99DDBBEE, 0x7F60FDA3, 0x01269FF7, 0x72F5BC5C, 0x663BC544, 0xFB7E345B,
0x4329768B, 0x23C6DCCB, 0xEDFC68B6, 0xE4F163B8, 0x31DCCAD7, 0x63851042, 0x97224013, 0xC6112084,
0x4A247D85, 0xBB3DF8D2, 0xF93211AE, 0x29A16DC7, 0x9E2F4B1D, 0xB230F3DC, 0x8652EC0D, 0xC1E3D077,
0xB3166C2B, 0x70B999A9, 0x9448FA11, 0xE9642247, 0xFC8CC4A8, 0xF03F1AA0, 0x7D2CD856, 0x3390EF22,
0x494EC787, 0x38D1C1D9, 0xCAA2FE8C, 0xD40B3698, 0xF581CFA6, 0x7ADE28A5, 0xB78E26DA, 0xADBFA43F,
0x3A9DE42C, 0x78920D50, 0x5FCC9B6A, 0x7E466254, 0x8D13C2F6, 0xD8B8E890, 0x39F75E2E, 0xC3AFF582,
0x5D80BE9F, 0xD0937C69, 0xD52DA96F, 0x2512B3CF, 0xAC993BC8, 0x187DA710, 0x9C636EE8, 0x3BBB7BDB,
0x267809CD, 0x5918F46E, 0x9AB701EC, 0x4F9AA883, 0x956E65E6, 0xFFE67EAA, 0xBCCF0821, 0x15E8E6EF,
0xE79BD9BA, 0x6F36CE4A, 0x9F09D4EA, 0xB07CD629, 0xA4B2AF31, 0x3F23312A, 0xA59430C6, 0xA266C035,
0x4EBC3774, 0x82CAA6FC, 0x90D0B0E0, 0xA7D81533, 0x04984AF1, 0xECDAF741, 0xCD500E7F, 0x91F62F17,
0x4DD68D76, 0xEFB04D43, 0xAA4D54CC, 0x9604DFE4, 0xD1B5E39E, 0x6A881B4C, 0x2C1FB8C1, 0x65517F46,
0x5EEA049D, 0x8C355D01, 0x877473FA, 0x0B412EFB, 0x671D5AB3, 0xDBD25292, 0x105633E9, 0xD647136D,
0xD7618C9A, 0xA10C7A37, 0xF8148E59, 0x133C89EB, 0xA927EECE, 0x61C935B7, 0x1CE5EDE1, 0x47B13C7A,
0xD2DF599C, 0xF2733F55, 0x14CE7918, 0xC737BF73, 0xF7CDEA53, 0xFDAA5B5F, 0x3D6F14DF, 0x44DB8678,
0xAFF381CA, 0x68C43EB9, 0x24342C38, 0xA3405FC2, 0x1DC37216, 0xE2250CBC, 0x3C498B28, 0x0D9541FF,
0xA8017139, 0x0CB3DE08, 0xB4E49CD8, 0x56C19064, 0xCB84617B, 0x32B670D5, 0x6C5C7448, 0xB85742D0
));
foreach ($dt3 as $dt3i) {
$dt0[] = (($dt3i << 24) & intval(0xFF000000)) | (($dt3i >> 8) & 0x00FFFFFF);
$dt1[] = (($dt3i << 16) & intval(0xFFFF0000)) | (($dt3i >> 16) & 0x0000FFFF);
$dt2[] = (($dt3i << 8) & intval(0xFFFFFF00)) | (($dt3i >> 24) & 0x000000FF);
};
$tables = array(
// The Precomputed inverse mixColumns tables dt0 - dt3
$dt0,
$dt1,
$dt2,
$dt3,
// The inverse SubByte S-Box
array(
0x52, 0x09, 0x6A, 0xD5, 0x30, 0x36, 0xA5, 0x38, 0xBF, 0x40, 0xA3, 0x9E, 0x81, 0xF3, 0xD7, 0xFB,
0x7C, 0xE3, 0x39, 0x82, 0x9B, 0x2F, 0xFF, 0x87, 0x34, 0x8E, 0x43, 0x44, 0xC4, 0xDE, 0xE9, 0xCB,
0x54, 0x7B, 0x94, 0x32, 0xA6, 0xC2, 0x23, 0x3D, 0xEE, 0x4C, 0x95, 0x0B, 0x42, 0xFA, 0xC3, 0x4E,
0x08, 0x2E, 0xA1, 0x66, 0x28, 0xD9, 0x24, 0xB2, 0x76, 0x5B, 0xA2, 0x49, 0x6D, 0x8B, 0xD1, 0x25,
0x72, 0xF8, 0xF6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xD4, 0xA4, 0x5C, 0xCC, 0x5D, 0x65, 0xB6, 0x92,
0x6C, 0x70, 0x48, 0x50, 0xFD, 0xED, 0xB9, 0xDA, 0x5E, 0x15, 0x46, 0x57, 0xA7, 0x8D, 0x9D, 0x84,
0x90, 0xD8, 0xAB, 0x00, 0x8C, 0xBC, 0xD3, 0x0A, 0xF7, 0xE4, 0x58, 0x05, 0xB8, 0xB3, 0x45, 0x06,
0xD0, 0x2C, 0x1E, 0x8F, 0xCA, 0x3F, 0x0F, 0x02, 0xC1, 0xAF, 0xBD, 0x03, 0x01, 0x13, 0x8A, 0x6B,
0x3A, 0x91, 0x11, 0x41, 0x4F, 0x67, 0xDC, 0xEA, 0x97, 0xF2, 0xCF, 0xCE, 0xF0, 0xB4, 0xE6, 0x73,
0x96, 0xAC, 0x74, 0x22, 0xE7, 0xAD, 0x35, 0x85, 0xE2, 0xF9, 0x37, 0xE8, 0x1C, 0x75, 0xDF, 0x6E,
0x47, 0xF1, 0x1A, 0x71, 0x1D, 0x29, 0xC5, 0x89, 0x6F, 0xB7, 0x62, 0x0E, 0xAA, 0x18, 0xBE, 0x1B,
0xFC, 0x56, 0x3E, 0x4B, 0xC6, 0xD2, 0x79, 0x20, 0x9A, 0xDB, 0xC0, 0xFE, 0x78, 0xCD, 0x5A, 0xF4,
0x1F, 0xDD, 0xA8, 0x33, 0x88, 0x07, 0xC7, 0x31, 0xB1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xEC, 0x5F,
0x60, 0x51, 0x7F, 0xA9, 0x19, 0xB5, 0x4A, 0x0D, 0x2D, 0xE5, 0x7A, 0x9F, 0x93, 0xC9, 0x9C, 0xEF,
0xA0, 0xE0, 0x3B, 0x4D, 0xAE, 0x2A, 0xF5, 0xB0, 0xC8, 0xEB, 0xBB, 0x3C, 0x83, 0x53, 0x99, 0x61,
0x17, 0x2B, 0x04, 0x7E, 0xBA, 0x77, 0xD6, 0x26, 0xE1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0C, 0x7D
)
);
}
return $tables;
}
/**
* Setup the performance-optimized function for de/encrypt()
*
* @see \phpseclib\Crypt\Base::_setupInlineCrypt()
* @access private
*/
function _setupInlineCrypt()
{
// Note: _setupInlineCrypt() will be called only if $this->changed === true
// So here we are'nt under the same heavy timing-stress as we are in _de/encryptBlock() or de/encrypt().
// However...the here generated function- $code, stored as php callback in $this->inline_crypt, must work as fast as even possible.
$lambda_functions =& self::_getLambdaFunctions();
// We create max. 10 hi-optimized code for memory reason. Means: For each $key one ultra fast inline-crypt function.
// (Currently, for Crypt_Rijndael/AES, one generated $lambda_function cost on php5.5@32bit ~80kb unfreeable mem and ~130kb on php5.5@64bit)
// After that, we'll still create very fast optimized code but not the hi-ultimative code, for each $mode one.
$gen_hi_opt_code = (bool)(count($lambda_functions) < 10);
// Generation of a uniqe hash for our generated code
$code_hash = "Crypt_Rijndael, {$this->mode}, {$this->Nr}, {$this->Nb}";
if ($gen_hi_opt_code) {
$code_hash = str_pad($code_hash, 32) . $this->_hashInlineCryptFunction($this->key);
}
if (!isset($lambda_functions[$code_hash])) {
switch (true) {
case $gen_hi_opt_code:
// The hi-optimized $lambda_functions will use the key-words hardcoded for better performance.
$w = $this->w;
$dw = $this->dw;
$init_encrypt = '';
$init_decrypt = '';
break;
default:
for ($i = 0, $cw = count($this->w); $i < $cw; ++$i) {
$w[] = '$w[' . $i . ']';
$dw[] = '$dw[' . $i . ']';
}
$init_encrypt = '$w = $self->w;';
$init_decrypt = '$dw = $self->dw;';
}
$Nr = $this->Nr;
$Nb = $this->Nb;
$c = $this->c;
// Generating encrypt code:
$init_encrypt.= '
static $tables;
if (empty($tables)) {
$tables = &$self->_getTables();
}
$t0 = $tables[0];
$t1 = $tables[1];
$t2 = $tables[2];
$t3 = $tables[3];
$sbox = $tables[4];
';
$s = 'e';
$e = 's';
$wc = $Nb - 1;
// Preround: addRoundKey
$encrypt_block = '$in = unpack("N*", $in);'."\n";
for ($i = 0; $i < $Nb; ++$i) {
$encrypt_block .= '$s'.$i.' = $in['.($i + 1).'] ^ '.$w[++$wc].";\n";
}
// Mainrounds: shiftRows + subWord + mixColumns + addRoundKey
for ($round = 1; $round < $Nr; ++$round) {
list($s, $e) = array($e, $s);
for ($i = 0; $i < $Nb; ++$i) {
$encrypt_block.=
'$'.$e.$i.' =
$t0[($'.$s.$i .' >> 24) & 0xff] ^
$t1[($'.$s.(($i + $c[1]) % $Nb).' >> 16) & 0xff] ^
$t2[($'.$s.(($i + $c[2]) % $Nb).' >> 8) & 0xff] ^
$t3[ $'.$s.(($i + $c[3]) % $Nb).' & 0xff] ^
'.$w[++$wc].";\n";
}
}
// Finalround: subWord + shiftRows + addRoundKey
for ($i = 0; $i < $Nb; ++$i) {
$encrypt_block.=
'$'.$e.$i.' =
$sbox[ $'.$e.$i.' & 0xff] |
($sbox[($'.$e.$i.' >> 8) & 0xff] << 8) |
($sbox[($'.$e.$i.' >> 16) & 0xff] << 16) |
($sbox[($'.$e.$i.' >> 24) & 0xff] << 24);'."\n";
}
$encrypt_block .= '$in = pack("N*"'."\n";
for ($i = 0; $i < $Nb; ++$i) {
$encrypt_block.= ',
($'.$e.$i .' & '.((int)0xFF000000).') ^
($'.$e.(($i + $c[1]) % $Nb).' & 0x00FF0000 ) ^
($'.$e.(($i + $c[2]) % $Nb).' & 0x0000FF00 ) ^
($'.$e.(($i + $c[3]) % $Nb).' & 0x000000FF ) ^
'.$w[$i]."\n";
}
$encrypt_block .= ');';
// Generating decrypt code:
$init_decrypt.= '
static $invtables;
if (empty($invtables)) {
$invtables = &$self->_getInvTables();
}
$dt0 = $invtables[0];
$dt1 = $invtables[1];
$dt2 = $invtables[2];
$dt3 = $invtables[3];
$isbox = $invtables[4];
';
$s = 'e';
$e = 's';
$wc = $Nb - 1;
// Preround: addRoundKey
$decrypt_block = '$in = unpack("N*", $in);'."\n";
for ($i = 0; $i < $Nb; ++$i) {
$decrypt_block .= '$s'.$i.' = $in['.($i + 1).'] ^ '.$dw[++$wc].';'."\n";
}
// Mainrounds: shiftRows + subWord + mixColumns + addRoundKey
for ($round = 1; $round < $Nr; ++$round) {
list($s, $e) = array($e, $s);
for ($i = 0; $i < $Nb; ++$i) {
$decrypt_block.=
'$'.$e.$i.' =
$dt0[($'.$s.$i .' >> 24) & 0xff] ^
$dt1[($'.$s.(($Nb + $i - $c[1]) % $Nb).' >> 16) & 0xff] ^
$dt2[($'.$s.(($Nb + $i - $c[2]) % $Nb).' >> 8) & 0xff] ^
$dt3[ $'.$s.(($Nb + $i - $c[3]) % $Nb).' & 0xff] ^
'.$dw[++$wc].";\n";
}
}
// Finalround: subWord + shiftRows + addRoundKey
for ($i = 0; $i < $Nb; ++$i) {
$decrypt_block.=
'$'.$e.$i.' =
$isbox[ $'.$e.$i.' & 0xff] |
($isbox[($'.$e.$i.' >> 8) & 0xff] << 8) |
($isbox[($'.$e.$i.' >> 16) & 0xff] << 16) |
($isbox[($'.$e.$i.' >> 24) & 0xff] << 24);'."\n";
}
$decrypt_block .= '$in = pack("N*"'."\n";
for ($i = 0; $i < $Nb; ++$i) {
$decrypt_block.= ',
($'.$e.$i. ' & '.((int)0xFF000000).') ^
($'.$e.(($Nb + $i - $c[1]) % $Nb).' & 0x00FF0000 ) ^
($'.$e.(($Nb + $i - $c[2]) % $Nb).' & 0x0000FF00 ) ^
($'.$e.(($Nb + $i - $c[3]) % $Nb).' & 0x000000FF ) ^
'.$dw[$i]."\n";
}
$decrypt_block .= ');';
$lambda_functions[$code_hash] = $this->_createInlineCryptFunction(
array(
'init_crypt' => '',
'init_encrypt' => $init_encrypt,
'init_decrypt' => $init_decrypt,
'encrypt_block' => $encrypt_block,
'decrypt_block' => $decrypt_block
)
);
}
$this->inline_crypt = $lambda_functions[$code_hash];
}
}
PK ��$Zb���u u ! phpseclib/phpseclib/Crypt/AES.phpnu �[��� <?php
/**
* Pure-PHP implementation of AES.
*
* Uses mcrypt, if available/possible, and an internal implementation, otherwise.
*
* PHP version 5
*
* NOTE: Since AES.php is (for compatibility and phpseclib-historical reasons) virtually
* just a wrapper to Rijndael.php you may consider using Rijndael.php instead of
* to save one include_once().
*
* If {@link self::setKeyLength() setKeyLength()} isn't called, it'll be calculated from
* {@link self::setKey() setKey()}. ie. if the key is 128-bits, the key length will be 128-bits. If it's 136-bits
* it'll be null-padded to 192-bits and 192 bits will be the key length until {@link self::setKey() setKey()}
* is called, again, at which point, it'll be recalculated.
*
* Since \phpseclib\Crypt\AES extends \phpseclib\Crypt\Rijndael, some functions are available to be called that, in the context of AES, don't
* make a whole lot of sense. {@link self::setBlockLength() setBlockLength()}, for instance. Calling that function,
* however possible, won't do anything (AES has a fixed block length whereas Rijndael has a variable one).
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $aes = new \phpseclib\Crypt\AES();
*
* $aes->setKey('abcdefghijklmnop');
*
* $size = 10 * 1024;
* $plaintext = '';
* for ($i = 0; $i < $size; $i++) {
* $plaintext.= 'a';
* }
*
* echo $aes->decrypt($aes->encrypt($plaintext));
* ?>
* </code>
*
* @category Crypt
* @package AES
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2008 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt;
/**
* Pure-PHP implementation of AES.
*
* @package AES
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class AES extends Rijndael
{
/**
* Dummy function
*
* Since \phpseclib\Crypt\AES extends \phpseclib\Crypt\Rijndael, this function is, technically, available, but it doesn't do anything.
*
* @see \phpseclib\Crypt\Rijndael::setBlockLength()
* @access public
* @param int $length
*/
function setBlockLength($length)
{
return;
}
/**
* Sets the key length
*
* Valid key lengths are 128, 192, and 256. If the length is less than 128, it will be rounded up to
* 128. If the length is greater than 128 and invalid, it will be rounded down to the closest valid amount.
*
* @see \phpseclib\Crypt\Rijndael:setKeyLength()
* @access public
* @param int $length
*/
function setKeyLength($length)
{
switch ($length) {
case 160:
$length = 192;
break;
case 224:
$length = 256;
}
parent::setKeyLength($length);
}
/**
* Sets the key.
*
* Rijndael supports five different key lengths, AES only supports three.
*
* @see \phpseclib\Crypt\Rijndael:setKey()
* @see setKeyLength()
* @access public
* @param string $key
*/
function setKey($key)
{
parent::setKey($key);
if (!$this->explicit_key_length) {
$length = strlen($key);
switch (true) {
case $length <= 16:
$this->key_length = 16;
break;
case $length <= 24:
$this->key_length = 24;
break;
default:
$this->key_length = 32;
}
$this->_setEngine();
}
}
}
PK ��$ZS�c�S S ! phpseclib/phpseclib/Crypt/DES.phpnu �[��� <?php
/**
* Pure-PHP implementation of DES.
*
* Uses mcrypt, if available, and an internal implementation, otherwise.
*
* PHP version 5
*
* Useful resources are as follows:
*
* - {@link http://en.wikipedia.org/wiki/DES_supplementary_material Wikipedia: DES supplementary material}
* - {@link http://www.itl.nist.gov/fipspubs/fip46-2.htm FIPS 46-2 - (DES), Data Encryption Standard}
* - {@link http://www.cs.eku.edu/faculty/styer/460/Encrypt/JS-DES.html JavaScript DES Example}
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $des = new \phpseclib\Crypt\DES();
*
* $des->setKey('abcdefgh');
*
* $size = 10 * 1024;
* $plaintext = '';
* for ($i = 0; $i < $size; $i++) {
* $plaintext.= 'a';
* }
*
* echo $des->decrypt($des->encrypt($plaintext));
* ?>
* </code>
*
* @category Crypt
* @package DES
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2007 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt;
/**
* Pure-PHP implementation of DES.
*
* @package DES
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class DES extends Base
{
/**#@+
* @access private
* @see \phpseclib\Crypt\DES::_setupKey()
* @see \phpseclib\Crypt\DES::_processBlock()
*/
/**
* Contains $keys[self::ENCRYPT]
*/
const ENCRYPT = 0;
/**
* Contains $keys[self::DECRYPT]
*/
const DECRYPT = 1;
/**#@-*/
/**
* Block Length of the cipher
*
* @see \phpseclib\Crypt\Base::block_size
* @var int
* @access private
*/
var $block_size = 8;
/**
* Key Length (in bytes)
*
* @see \phpseclib\Crypt\Base::setKeyLength()
* @var int
* @access private
*/
var $key_length = 8;
/**
* The mcrypt specific name of the cipher
*
* @see \phpseclib\Crypt\Base::cipher_name_mcrypt
* @var string
* @access private
*/
var $cipher_name_mcrypt = 'des';
/**
* The OpenSSL names of the cipher / modes
*
* @see \phpseclib\Crypt\Base::openssl_mode_names
* @var array
* @access private
*/
var $openssl_mode_names = array(
self::MODE_ECB => 'des-ecb',
self::MODE_CBC => 'des-cbc',
self::MODE_CFB => 'des-cfb',
self::MODE_OFB => 'des-ofb'
// self::MODE_CTR is undefined for DES
);
/**
* Optimizing value while CFB-encrypting
*
* @see \phpseclib\Crypt\Base::cfb_init_len
* @var int
* @access private
*/
var $cfb_init_len = 500;
/**
* Switch for DES/3DES encryption
*
* Used only if $engine == self::ENGINE_INTERNAL
*
* @see self::_setupKey()
* @see self::_processBlock()
* @var int
* @access private
*/
var $des_rounds = 1;
/**
* max possible size of $key
*
* @see self::setKey()
* @var string
* @access private
*/
var $key_length_max = 8;
/**
* The Key Schedule
*
* @see self::_setupKey()
* @var array
* @access private
*/
var $keys;
/**
* Shuffle table.
*
* For each byte value index, the entry holds an 8-byte string
* with each byte containing all bits in the same state as the
* corresponding bit in the index value.
*
* @see self::_processBlock()
* @see self::_setupKey()
* @var array
* @access private
*/
var $shuffle = array(
"\x00\x00\x00\x00\x00\x00\x00\x00", "\x00\x00\x00\x00\x00\x00\x00\xFF",
"\x00\x00\x00\x00\x00\x00\xFF\x00", "\x00\x00\x00\x00\x00\x00\xFF\xFF",
"\x00\x00\x00\x00\x00\xFF\x00\x00", "\x00\x00\x00\x00\x00\xFF\x00\xFF",
"\x00\x00\x00\x00\x00\xFF\xFF\x00", "\x00\x00\x00\x00\x00\xFF\xFF\xFF",
"\x00\x00\x00\x00\xFF\x00\x00\x00", "\x00\x00\x00\x00\xFF\x00\x00\xFF",
"\x00\x00\x00\x00\xFF\x00\xFF\x00", "\x00\x00\x00\x00\xFF\x00\xFF\xFF",
"\x00\x00\x00\x00\xFF\xFF\x00\x00", "\x00\x00\x00\x00\xFF\xFF\x00\xFF",
"\x00\x00\x00\x00\xFF\xFF\xFF\x00", "\x00\x00\x00\x00\xFF\xFF\xFF\xFF",
"\x00\x00\x00\xFF\x00\x00\x00\x00", "\x00\x00\x00\xFF\x00\x00\x00\xFF",
"\x00\x00\x00\xFF\x00\x00\xFF\x00", "\x00\x00\x00\xFF\x00\x00\xFF\xFF",
"\x00\x00\x00\xFF\x00\xFF\x00\x00", "\x00\x00\x00\xFF\x00\xFF\x00\xFF",
"\x00\x00\x00\xFF\x00\xFF\xFF\x00", "\x00\x00\x00\xFF\x00\xFF\xFF\xFF",
"\x00\x00\x00\xFF\xFF\x00\x00\x00", "\x00\x00\x00\xFF\xFF\x00\x00\xFF",
"\x00\x00\x00\xFF\xFF\x00\xFF\x00", "\x00\x00\x00\xFF\xFF\x00\xFF\xFF",
"\x00\x00\x00\xFF\xFF\xFF\x00\x00", "\x00\x00\x00\xFF\xFF\xFF\x00\xFF",
"\x00\x00\x00\xFF\xFF\xFF\xFF\x00", "\x00\x00\x00\xFF\xFF\xFF\xFF\xFF",
"\x00\x00\xFF\x00\x00\x00\x00\x00", "\x00\x00\xFF\x00\x00\x00\x00\xFF",
"\x00\x00\xFF\x00\x00\x00\xFF\x00", "\x00\x00\xFF\x00\x00\x00\xFF\xFF",
"\x00\x00\xFF\x00\x00\xFF\x00\x00", "\x00\x00\xFF\x00\x00\xFF\x00\xFF",
"\x00\x00\xFF\x00\x00\xFF\xFF\x00", "\x00\x00\xFF\x00\x00\xFF\xFF\xFF",
"\x00\x00\xFF\x00\xFF\x00\x00\x00", "\x00\x00\xFF\x00\xFF\x00\x00\xFF",
"\x00\x00\xFF\x00\xFF\x00\xFF\x00", "\x00\x00\xFF\x00\xFF\x00\xFF\xFF",
"\x00\x00\xFF\x00\xFF\xFF\x00\x00", "\x00\x00\xFF\x00\xFF\xFF\x00\xFF",
"\x00\x00\xFF\x00\xFF\xFF\xFF\x00", "\x00\x00\xFF\x00\xFF\xFF\xFF\xFF",
"\x00\x00\xFF\xFF\x00\x00\x00\x00", "\x00\x00\xFF\xFF\x00\x00\x00\xFF",
"\x00\x00\xFF\xFF\x00\x00\xFF\x00", "\x00\x00\xFF\xFF\x00\x00\xFF\xFF",
"\x00\x00\xFF\xFF\x00\xFF\x00\x00", "\x00\x00\xFF\xFF\x00\xFF\x00\xFF",
"\x00\x00\xFF\xFF\x00\xFF\xFF\x00", "\x00\x00\xFF\xFF\x00\xFF\xFF\xFF",
"\x00\x00\xFF\xFF\xFF\x00\x00\x00", "\x00\x00\xFF\xFF\xFF\x00\x00\xFF",
"\x00\x00\xFF\xFF\xFF\x00\xFF\x00", "\x00\x00\xFF\xFF\xFF\x00\xFF\xFF",
"\x00\x00\xFF\xFF\xFF\xFF\x00\x00", "\x00\x00\xFF\xFF\xFF\xFF\x00\xFF",
"\x00\x00\xFF\xFF\xFF\xFF\xFF\x00", "\x00\x00\xFF\xFF\xFF\xFF\xFF\xFF",
"\x00\xFF\x00\x00\x00\x00\x00\x00", "\x00\xFF\x00\x00\x00\x00\x00\xFF",
"\x00\xFF\x00\x00\x00\x00\xFF\x00", "\x00\xFF\x00\x00\x00\x00\xFF\xFF",
"\x00\xFF\x00\x00\x00\xFF\x00\x00", "\x00\xFF\x00\x00\x00\xFF\x00\xFF",
"\x00\xFF\x00\x00\x00\xFF\xFF\x00", "\x00\xFF\x00\x00\x00\xFF\xFF\xFF",
"\x00\xFF\x00\x00\xFF\x00\x00\x00", "\x00\xFF\x00\x00\xFF\x00\x00\xFF",
"\x00\xFF\x00\x00\xFF\x00\xFF\x00", "\x00\xFF\x00\x00\xFF\x00\xFF\xFF",
"\x00\xFF\x00\x00\xFF\xFF\x00\x00", "\x00\xFF\x00\x00\xFF\xFF\x00\xFF",
"\x00\xFF\x00\x00\xFF\xFF\xFF\x00", "\x00\xFF\x00\x00\xFF\xFF\xFF\xFF",
"\x00\xFF\x00\xFF\x00\x00\x00\x00", "\x00\xFF\x00\xFF\x00\x00\x00\xFF",
"\x00\xFF\x00\xFF\x00\x00\xFF\x00", "\x00\xFF\x00\xFF\x00\x00\xFF\xFF",
"\x00\xFF\x00\xFF\x00\xFF\x00\x00", "\x00\xFF\x00\xFF\x00\xFF\x00\xFF",
"\x00\xFF\x00\xFF\x00\xFF\xFF\x00", "\x00\xFF\x00\xFF\x00\xFF\xFF\xFF",
"\x00\xFF\x00\xFF\xFF\x00\x00\x00", "\x00\xFF\x00\xFF\xFF\x00\x00\xFF",
"\x00\xFF\x00\xFF\xFF\x00\xFF\x00", "\x00\xFF\x00\xFF\xFF\x00\xFF\xFF",
"\x00\xFF\x00\xFF\xFF\xFF\x00\x00", "\x00\xFF\x00\xFF\xFF\xFF\x00\xFF",
"\x00\xFF\x00\xFF\xFF\xFF\xFF\x00", "\x00\xFF\x00\xFF\xFF\xFF\xFF\xFF",
"\x00\xFF\xFF\x00\x00\x00\x00\x00", "\x00\xFF\xFF\x00\x00\x00\x00\xFF",
"\x00\xFF\xFF\x00\x00\x00\xFF\x00", "\x00\xFF\xFF\x00\x00\x00\xFF\xFF",
"\x00\xFF\xFF\x00\x00\xFF\x00\x00", "\x00\xFF\xFF\x00\x00\xFF\x00\xFF",
"\x00\xFF\xFF\x00\x00\xFF\xFF\x00", "\x00\xFF\xFF\x00\x00\xFF\xFF\xFF",
"\x00\xFF\xFF\x00\xFF\x00\x00\x00", "\x00\xFF\xFF\x00\xFF\x00\x00\xFF",
"\x00\xFF\xFF\x00\xFF\x00\xFF\x00", "\x00\xFF\xFF\x00\xFF\x00\xFF\xFF",
"\x00\xFF\xFF\x00\xFF\xFF\x00\x00", "\x00\xFF\xFF\x00\xFF\xFF\x00\xFF",
"\x00\xFF\xFF\x00\xFF\xFF\xFF\x00", "\x00\xFF\xFF\x00\xFF\xFF\xFF\xFF",
"\x00\xFF\xFF\xFF\x00\x00\x00\x00", "\x00\xFF\xFF\xFF\x00\x00\x00\xFF",
"\x00\xFF\xFF\xFF\x00\x00\xFF\x00", "\x00\xFF\xFF\xFF\x00\x00\xFF\xFF",
"\x00\xFF\xFF\xFF\x00\xFF\x00\x00", "\x00\xFF\xFF\xFF\x00\xFF\x00\xFF",
"\x00\xFF\xFF\xFF\x00\xFF\xFF\x00", "\x00\xFF\xFF\xFF\x00\xFF\xFF\xFF",
"\x00\xFF\xFF\xFF\xFF\x00\x00\x00", "\x00\xFF\xFF\xFF\xFF\x00\x00\xFF",
"\x00\xFF\xFF\xFF\xFF\x00\xFF\x00", "\x00\xFF\xFF\xFF\xFF\x00\xFF\xFF",
"\x00\xFF\xFF\xFF\xFF\xFF\x00\x00", "\x00\xFF\xFF\xFF\xFF\xFF\x00\xFF",
"\x00\xFF\xFF\xFF\xFF\xFF\xFF\x00", "\x00\xFF\xFF\xFF\xFF\xFF\xFF\xFF",
"\xFF\x00\x00\x00\x00\x00\x00\x00", "\xFF\x00\x00\x00\x00\x00\x00\xFF",
"\xFF\x00\x00\x00\x00\x00\xFF\x00", "\xFF\x00\x00\x00\x00\x00\xFF\xFF",
"\xFF\x00\x00\x00\x00\xFF\x00\x00", "\xFF\x00\x00\x00\x00\xFF\x00\xFF",
"\xFF\x00\x00\x00\x00\xFF\xFF\x00", "\xFF\x00\x00\x00\x00\xFF\xFF\xFF",
"\xFF\x00\x00\x00\xFF\x00\x00\x00", "\xFF\x00\x00\x00\xFF\x00\x00\xFF",
"\xFF\x00\x00\x00\xFF\x00\xFF\x00", "\xFF\x00\x00\x00\xFF\x00\xFF\xFF",
"\xFF\x00\x00\x00\xFF\xFF\x00\x00", "\xFF\x00\x00\x00\xFF\xFF\x00\xFF",
"\xFF\x00\x00\x00\xFF\xFF\xFF\x00", "\xFF\x00\x00\x00\xFF\xFF\xFF\xFF",
"\xFF\x00\x00\xFF\x00\x00\x00\x00", "\xFF\x00\x00\xFF\x00\x00\x00\xFF",
"\xFF\x00\x00\xFF\x00\x00\xFF\x00", "\xFF\x00\x00\xFF\x00\x00\xFF\xFF",
"\xFF\x00\x00\xFF\x00\xFF\x00\x00", "\xFF\x00\x00\xFF\x00\xFF\x00\xFF",
"\xFF\x00\x00\xFF\x00\xFF\xFF\x00", "\xFF\x00\x00\xFF\x00\xFF\xFF\xFF",
"\xFF\x00\x00\xFF\xFF\x00\x00\x00", "\xFF\x00\x00\xFF\xFF\x00\x00\xFF",
"\xFF\x00\x00\xFF\xFF\x00\xFF\x00", "\xFF\x00\x00\xFF\xFF\x00\xFF\xFF",
"\xFF\x00\x00\xFF\xFF\xFF\x00\x00", "\xFF\x00\x00\xFF\xFF\xFF\x00\xFF",
"\xFF\x00\x00\xFF\xFF\xFF\xFF\x00", "\xFF\x00\x00\xFF\xFF\xFF\xFF\xFF",
"\xFF\x00\xFF\x00\x00\x00\x00\x00", "\xFF\x00\xFF\x00\x00\x00\x00\xFF",
"\xFF\x00\xFF\x00\x00\x00\xFF\x00", "\xFF\x00\xFF\x00\x00\x00\xFF\xFF",
"\xFF\x00\xFF\x00\x00\xFF\x00\x00", "\xFF\x00\xFF\x00\x00\xFF\x00\xFF",
"\xFF\x00\xFF\x00\x00\xFF\xFF\x00", "\xFF\x00\xFF\x00\x00\xFF\xFF\xFF",
"\xFF\x00\xFF\x00\xFF\x00\x00\x00", "\xFF\x00\xFF\x00\xFF\x00\x00\xFF",
"\xFF\x00\xFF\x00\xFF\x00\xFF\x00", "\xFF\x00\xFF\x00\xFF\x00\xFF\xFF",
"\xFF\x00\xFF\x00\xFF\xFF\x00\x00", "\xFF\x00\xFF\x00\xFF\xFF\x00\xFF",
"\xFF\x00\xFF\x00\xFF\xFF\xFF\x00", "\xFF\x00\xFF\x00\xFF\xFF\xFF\xFF",
"\xFF\x00\xFF\xFF\x00\x00\x00\x00", "\xFF\x00\xFF\xFF\x00\x00\x00\xFF",
"\xFF\x00\xFF\xFF\x00\x00\xFF\x00", "\xFF\x00\xFF\xFF\x00\x00\xFF\xFF",
"\xFF\x00\xFF\xFF\x00\xFF\x00\x00", "\xFF\x00\xFF\xFF\x00\xFF\x00\xFF",
"\xFF\x00\xFF\xFF\x00\xFF\xFF\x00", "\xFF\x00\xFF\xFF\x00\xFF\xFF\xFF",
"\xFF\x00\xFF\xFF\xFF\x00\x00\x00", "\xFF\x00\xFF\xFF\xFF\x00\x00\xFF",
"\xFF\x00\xFF\xFF\xFF\x00\xFF\x00", "\xFF\x00\xFF\xFF\xFF\x00\xFF\xFF",
"\xFF\x00\xFF\xFF\xFF\xFF\x00\x00", "\xFF\x00\xFF\xFF\xFF\xFF\x00\xFF",
"\xFF\x00\xFF\xFF\xFF\xFF\xFF\x00", "\xFF\x00\xFF\xFF\xFF\xFF\xFF\xFF",
"\xFF\xFF\x00\x00\x00\x00\x00\x00", "\xFF\xFF\x00\x00\x00\x00\x00\xFF",
"\xFF\xFF\x00\x00\x00\x00\xFF\x00", "\xFF\xFF\x00\x00\x00\x00\xFF\xFF",
"\xFF\xFF\x00\x00\x00\xFF\x00\x00", "\xFF\xFF\x00\x00\x00\xFF\x00\xFF",
"\xFF\xFF\x00\x00\x00\xFF\xFF\x00", "\xFF\xFF\x00\x00\x00\xFF\xFF\xFF",
"\xFF\xFF\x00\x00\xFF\x00\x00\x00", "\xFF\xFF\x00\x00\xFF\x00\x00\xFF",
"\xFF\xFF\x00\x00\xFF\x00\xFF\x00", "\xFF\xFF\x00\x00\xFF\x00\xFF\xFF",
"\xFF\xFF\x00\x00\xFF\xFF\x00\x00", "\xFF\xFF\x00\x00\xFF\xFF\x00\xFF",
"\xFF\xFF\x00\x00\xFF\xFF\xFF\x00", "\xFF\xFF\x00\x00\xFF\xFF\xFF\xFF",
"\xFF\xFF\x00\xFF\x00\x00\x00\x00", "\xFF\xFF\x00\xFF\x00\x00\x00\xFF",
"\xFF\xFF\x00\xFF\x00\x00\xFF\x00", "\xFF\xFF\x00\xFF\x00\x00\xFF\xFF",
"\xFF\xFF\x00\xFF\x00\xFF\x00\x00", "\xFF\xFF\x00\xFF\x00\xFF\x00\xFF",
"\xFF\xFF\x00\xFF\x00\xFF\xFF\x00", "\xFF\xFF\x00\xFF\x00\xFF\xFF\xFF",
"\xFF\xFF\x00\xFF\xFF\x00\x00\x00", "\xFF\xFF\x00\xFF\xFF\x00\x00\xFF",
"\xFF\xFF\x00\xFF\xFF\x00\xFF\x00", "\xFF\xFF\x00\xFF\xFF\x00\xFF\xFF",
"\xFF\xFF\x00\xFF\xFF\xFF\x00\x00", "\xFF\xFF\x00\xFF\xFF\xFF\x00\xFF",
"\xFF\xFF\x00\xFF\xFF\xFF\xFF\x00", "\xFF\xFF\x00\xFF\xFF\xFF\xFF\xFF",
"\xFF\xFF\xFF\x00\x00\x00\x00\x00", "\xFF\xFF\xFF\x00\x00\x00\x00\xFF",
"\xFF\xFF\xFF\x00\x00\x00\xFF\x00", "\xFF\xFF\xFF\x00\x00\x00\xFF\xFF",
"\xFF\xFF\xFF\x00\x00\xFF\x00\x00", "\xFF\xFF\xFF\x00\x00\xFF\x00\xFF",
"\xFF\xFF\xFF\x00\x00\xFF\xFF\x00", "\xFF\xFF\xFF\x00\x00\xFF\xFF\xFF",
"\xFF\xFF\xFF\x00\xFF\x00\x00\x00", "\xFF\xFF\xFF\x00\xFF\x00\x00\xFF",
"\xFF\xFF\xFF\x00\xFF\x00\xFF\x00", "\xFF\xFF\xFF\x00\xFF\x00\xFF\xFF",
"\xFF\xFF\xFF\x00\xFF\xFF\x00\x00", "\xFF\xFF\xFF\x00\xFF\xFF\x00\xFF",
"\xFF\xFF\xFF\x00\xFF\xFF\xFF\x00", "\xFF\xFF\xFF\x00\xFF\xFF\xFF\xFF",
"\xFF\xFF\xFF\xFF\x00\x00\x00\x00", "\xFF\xFF\xFF\xFF\x00\x00\x00\xFF",
"\xFF\xFF\xFF\xFF\x00\x00\xFF\x00", "\xFF\xFF\xFF\xFF\x00\x00\xFF\xFF",
"\xFF\xFF\xFF\xFF\x00\xFF\x00\x00", "\xFF\xFF\xFF\xFF\x00\xFF\x00\xFF",
"\xFF\xFF\xFF\xFF\x00\xFF\xFF\x00", "\xFF\xFF\xFF\xFF\x00\xFF\xFF\xFF",
"\xFF\xFF\xFF\xFF\xFF\x00\x00\x00", "\xFF\xFF\xFF\xFF\xFF\x00\x00\xFF",
"\xFF\xFF\xFF\xFF\xFF\x00\xFF\x00", "\xFF\xFF\xFF\xFF\xFF\x00\xFF\xFF",
"\xFF\xFF\xFF\xFF\xFF\xFF\x00\x00", "\xFF\xFF\xFF\xFF\xFF\xFF\x00\xFF",
"\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x00", "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF"
);
/**
* IP mapping helper table.
*
* Indexing this table with each source byte performs the initial bit permutation.
*
* @var array
* @access private
*/
var $ipmap = array(
0x00, 0x10, 0x01, 0x11, 0x20, 0x30, 0x21, 0x31,
0x02, 0x12, 0x03, 0x13, 0x22, 0x32, 0x23, 0x33,
0x40, 0x50, 0x41, 0x51, 0x60, 0x70, 0x61, 0x71,
0x42, 0x52, 0x43, 0x53, 0x62, 0x72, 0x63, 0x73,
0x04, 0x14, 0x05, 0x15, 0x24, 0x34, 0x25, 0x35,
0x06, 0x16, 0x07, 0x17, 0x26, 0x36, 0x27, 0x37,
0x44, 0x54, 0x45, 0x55, 0x64, 0x74, 0x65, 0x75,
0x46, 0x56, 0x47, 0x57, 0x66, 0x76, 0x67, 0x77,
0x80, 0x90, 0x81, 0x91, 0xA0, 0xB0, 0xA1, 0xB1,
0x82, 0x92, 0x83, 0x93, 0xA2, 0xB2, 0xA3, 0xB3,
0xC0, 0xD0, 0xC1, 0xD1, 0xE0, 0xF0, 0xE1, 0xF1,
0xC2, 0xD2, 0xC3, 0xD3, 0xE2, 0xF2, 0xE3, 0xF3,
0x84, 0x94, 0x85, 0x95, 0xA4, 0xB4, 0xA5, 0xB5,
0x86, 0x96, 0x87, 0x97, 0xA6, 0xB6, 0xA7, 0xB7,
0xC4, 0xD4, 0xC5, 0xD5, 0xE4, 0xF4, 0xE5, 0xF5,
0xC6, 0xD6, 0xC7, 0xD7, 0xE6, 0xF6, 0xE7, 0xF7,
0x08, 0x18, 0x09, 0x19, 0x28, 0x38, 0x29, 0x39,
0x0A, 0x1A, 0x0B, 0x1B, 0x2A, 0x3A, 0x2B, 0x3B,
0x48, 0x58, 0x49, 0x59, 0x68, 0x78, 0x69, 0x79,
0x4A, 0x5A, 0x4B, 0x5B, 0x6A, 0x7A, 0x6B, 0x7B,
0x0C, 0x1C, 0x0D, 0x1D, 0x2C, 0x3C, 0x2D, 0x3D,
0x0E, 0x1E, 0x0F, 0x1F, 0x2E, 0x3E, 0x2F, 0x3F,
0x4C, 0x5C, 0x4D, 0x5D, 0x6C, 0x7C, 0x6D, 0x7D,
0x4E, 0x5E, 0x4F, 0x5F, 0x6E, 0x7E, 0x6F, 0x7F,
0x88, 0x98, 0x89, 0x99, 0xA8, 0xB8, 0xA9, 0xB9,
0x8A, 0x9A, 0x8B, 0x9B, 0xAA, 0xBA, 0xAB, 0xBB,
0xC8, 0xD8, 0xC9, 0xD9, 0xE8, 0xF8, 0xE9, 0xF9,
0xCA, 0xDA, 0xCB, 0xDB, 0xEA, 0xFA, 0xEB, 0xFB,
0x8C, 0x9C, 0x8D, 0x9D, 0xAC, 0xBC, 0xAD, 0xBD,
0x8E, 0x9E, 0x8F, 0x9F, 0xAE, 0xBE, 0xAF, 0xBF,
0xCC, 0xDC, 0xCD, 0xDD, 0xEC, 0xFC, 0xED, 0xFD,
0xCE, 0xDE, 0xCF, 0xDF, 0xEE, 0xFE, 0xEF, 0xFF
);
/**
* Inverse IP mapping helper table.
* Indexing this table with a byte value reverses the bit order.
*
* @var array
* @access private
*/
var $invipmap = array(
0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0,
0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,
0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8,
0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8,
0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4,
0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4,
0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC,
0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC,
0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2,
0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2,
0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA,
0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA,
0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6,
0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6,
0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE,
0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE,
0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1,
0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1,
0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9,
0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9,
0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5,
0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5,
0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED,
0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD,
0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3,
0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3,
0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB,
0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB,
0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7,
0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7,
0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF,
0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF
);
/**
* Pre-permuted S-box1
*
* Each box ($sbox1-$sbox8) has been vectorized, then each value pre-permuted using the
* P table: concatenation can then be replaced by exclusive ORs.
*
* @var array
* @access private
*/
var $sbox1 = array(
0x00808200, 0x00000000, 0x00008000, 0x00808202,
0x00808002, 0x00008202, 0x00000002, 0x00008000,
0x00000200, 0x00808200, 0x00808202, 0x00000200,
0x00800202, 0x00808002, 0x00800000, 0x00000002,
0x00000202, 0x00800200, 0x00800200, 0x00008200,
0x00008200, 0x00808000, 0x00808000, 0x00800202,
0x00008002, 0x00800002, 0x00800002, 0x00008002,
0x00000000, 0x00000202, 0x00008202, 0x00800000,
0x00008000, 0x00808202, 0x00000002, 0x00808000,
0x00808200, 0x00800000, 0x00800000, 0x00000200,
0x00808002, 0x00008000, 0x00008200, 0x00800002,
0x00000200, 0x00000002, 0x00800202, 0x00008202,
0x00808202, 0x00008002, 0x00808000, 0x00800202,
0x00800002, 0x00000202, 0x00008202, 0x00808200,
0x00000202, 0x00800200, 0x00800200, 0x00000000,
0x00008002, 0x00008200, 0x00000000, 0x00808002
);
/**
* Pre-permuted S-box2
*
* @var array
* @access private
*/
var $sbox2 = array(
0x40084010, 0x40004000, 0x00004000, 0x00084010,
0x00080000, 0x00000010, 0x40080010, 0x40004010,
0x40000010, 0x40084010, 0x40084000, 0x40000000,
0x40004000, 0x00080000, 0x00000010, 0x40080010,
0x00084000, 0x00080010, 0x40004010, 0x00000000,
0x40000000, 0x00004000, 0x00084010, 0x40080000,
0x00080010, 0x40000010, 0x00000000, 0x00084000,
0x00004010, 0x40084000, 0x40080000, 0x00004010,
0x00000000, 0x00084010, 0x40080010, 0x00080000,
0x40004010, 0x40080000, 0x40084000, 0x00004000,
0x40080000, 0x40004000, 0x00000010, 0x40084010,
0x00084010, 0x00000010, 0x00004000, 0x40000000,
0x00004010, 0x40084000, 0x00080000, 0x40000010,
0x00080010, 0x40004010, 0x40000010, 0x00080010,
0x00084000, 0x00000000, 0x40004000, 0x00004010,
0x40000000, 0x40080010, 0x40084010, 0x00084000
);
/**
* Pre-permuted S-box3
*
* @var array
* @access private
*/
var $sbox3 = array(
0x00000104, 0x04010100, 0x00000000, 0x04010004,
0x04000100, 0x00000000, 0x00010104, 0x04000100,
0x00010004, 0x04000004, 0x04000004, 0x00010000,
0x04010104, 0x00010004, 0x04010000, 0x00000104,
0x04000000, 0x00000004, 0x04010100, 0x00000100,
0x00010100, 0x04010000, 0x04010004, 0x00010104,
0x04000104, 0x00010100, 0x00010000, 0x04000104,
0x00000004, 0x04010104, 0x00000100, 0x04000000,
0x04010100, 0x04000000, 0x00010004, 0x00000104,
0x00010000, 0x04010100, 0x04000100, 0x00000000,
0x00000100, 0x00010004, 0x04010104, 0x04000100,
0x04000004, 0x00000100, 0x00000000, 0x04010004,
0x04000104, 0x00010000, 0x04000000, 0x04010104,
0x00000004, 0x00010104, 0x00010100, 0x04000004,
0x04010000, 0x04000104, 0x00000104, 0x04010000,
0x00010104, 0x00000004, 0x04010004, 0x00010100
);
/**
* Pre-permuted S-box4
*
* @var array
* @access private
*/
var $sbox4 = array(
0x80401000, 0x80001040, 0x80001040, 0x00000040,
0x00401040, 0x80400040, 0x80400000, 0x80001000,
0x00000000, 0x00401000, 0x00401000, 0x80401040,
0x80000040, 0x00000000, 0x00400040, 0x80400000,
0x80000000, 0x00001000, 0x00400000, 0x80401000,
0x00000040, 0x00400000, 0x80001000, 0x00001040,
0x80400040, 0x80000000, 0x00001040, 0x00400040,
0x00001000, 0x00401040, 0x80401040, 0x80000040,
0x00400040, 0x80400000, 0x00401000, 0x80401040,
0x80000040, 0x00000000, 0x00000000, 0x00401000,
0x00001040, 0x00400040, 0x80400040, 0x80000000,
0x80401000, 0x80001040, 0x80001040, 0x00000040,
0x80401040, 0x80000040, 0x80000000, 0x00001000,
0x80400000, 0x80001000, 0x00401040, 0x80400040,
0x80001000, 0x00001040, 0x00400000, 0x80401000,
0x00000040, 0x00400000, 0x00001000, 0x00401040
);
/**
* Pre-permuted S-box5
*
* @var array
* @access private
*/
var $sbox5 = array(
0x00000080, 0x01040080, 0x01040000, 0x21000080,
0x00040000, 0x00000080, 0x20000000, 0x01040000,
0x20040080, 0x00040000, 0x01000080, 0x20040080,
0x21000080, 0x21040000, 0x00040080, 0x20000000,
0x01000000, 0x20040000, 0x20040000, 0x00000000,
0x20000080, 0x21040080, 0x21040080, 0x01000080,
0x21040000, 0x20000080, 0x00000000, 0x21000000,
0x01040080, 0x01000000, 0x21000000, 0x00040080,
0x00040000, 0x21000080, 0x00000080, 0x01000000,
0x20000000, 0x01040000, 0x21000080, 0x20040080,
0x01000080, 0x20000000, 0x21040000, 0x01040080,
0x20040080, 0x00000080, 0x01000000, 0x21040000,
0x21040080, 0x00040080, 0x21000000, 0x21040080,
0x01040000, 0x00000000, 0x20040000, 0x21000000,
0x00040080, 0x01000080, 0x20000080, 0x00040000,
0x00000000, 0x20040000, 0x01040080, 0x20000080
);
/**
* Pre-permuted S-box6
*
* @var array
* @access private
*/
var $sbox6 = array(
0x10000008, 0x10200000, 0x00002000, 0x10202008,
0x10200000, 0x00000008, 0x10202008, 0x00200000,
0x10002000, 0x00202008, 0x00200000, 0x10000008,
0x00200008, 0x10002000, 0x10000000, 0x00002008,
0x00000000, 0x00200008, 0x10002008, 0x00002000,
0x00202000, 0x10002008, 0x00000008, 0x10200008,
0x10200008, 0x00000000, 0x00202008, 0x10202000,
0x00002008, 0x00202000, 0x10202000, 0x10000000,
0x10002000, 0x00000008, 0x10200008, 0x00202000,
0x10202008, 0x00200000, 0x00002008, 0x10000008,
0x00200000, 0x10002000, 0x10000000, 0x00002008,
0x10000008, 0x10202008, 0x00202000, 0x10200000,
0x00202008, 0x10202000, 0x00000000, 0x10200008,
0x00000008, 0x00002000, 0x10200000, 0x00202008,
0x00002000, 0x00200008, 0x10002008, 0x00000000,
0x10202000, 0x10000000, 0x00200008, 0x10002008
);
/**
* Pre-permuted S-box7
*
* @var array
* @access private
*/
var $sbox7 = array(
0x00100000, 0x02100001, 0x02000401, 0x00000000,
0x00000400, 0x02000401, 0x00100401, 0x02100400,
0x02100401, 0x00100000, 0x00000000, 0x02000001,
0x00000001, 0x02000000, 0x02100001, 0x00000401,
0x02000400, 0x00100401, 0x00100001, 0x02000400,
0x02000001, 0x02100000, 0x02100400, 0x00100001,
0x02100000, 0x00000400, 0x00000401, 0x02100401,
0x00100400, 0x00000001, 0x02000000, 0x00100400,
0x02000000, 0x00100400, 0x00100000, 0x02000401,
0x02000401, 0x02100001, 0x02100001, 0x00000001,
0x00100001, 0x02000000, 0x02000400, 0x00100000,
0x02100400, 0x00000401, 0x00100401, 0x02100400,
0x00000401, 0x02000001, 0x02100401, 0x02100000,
0x00100400, 0x00000000, 0x00000001, 0x02100401,
0x00000000, 0x00100401, 0x02100000, 0x00000400,
0x02000001, 0x02000400, 0x00000400, 0x00100001
);
/**
* Pre-permuted S-box8
*
* @var array
* @access private
*/
var $sbox8 = array(
0x08000820, 0x00000800, 0x00020000, 0x08020820,
0x08000000, 0x08000820, 0x00000020, 0x08000000,
0x00020020, 0x08020000, 0x08020820, 0x00020800,
0x08020800, 0x00020820, 0x00000800, 0x00000020,
0x08020000, 0x08000020, 0x08000800, 0x00000820,
0x00020800, 0x00020020, 0x08020020, 0x08020800,
0x00000820, 0x00000000, 0x00000000, 0x08020020,
0x08000020, 0x08000800, 0x00020820, 0x00020000,
0x00020820, 0x00020000, 0x08020800, 0x00000800,
0x00000020, 0x08020020, 0x00000800, 0x00020820,
0x08000800, 0x00000020, 0x08000020, 0x08020000,
0x08020020, 0x08000000, 0x00020000, 0x08000820,
0x00000000, 0x08020820, 0x00020020, 0x08000020,
0x08020000, 0x08000800, 0x08000820, 0x00000000,
0x08020820, 0x00020800, 0x00020800, 0x00000820,
0x00000820, 0x00020020, 0x08000000, 0x08020800
);
/**
* Test for engine validity
*
* This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
*
* @see \phpseclib\Crypt\Base::isValidEngine()
* @param int $engine
* @access public
* @return bool
*/
function isValidEngine($engine)
{
if ($this->key_length_max == 8) {
if ($engine == self::ENGINE_OPENSSL) {
$this->cipher_name_openssl_ecb = 'des-ecb';
$this->cipher_name_openssl = 'des-' . $this->_openssl_translate_mode();
}
}
return parent::isValidEngine($engine);
}
/**
* Sets the key.
*
* Keys can be of any length. DES, itself, uses 64-bit keys (eg. strlen($key) == 8), however, we
* only use the first eight, if $key has more then eight characters in it, and pad $key with the
* null byte if it is less then eight characters long.
*
* DES also requires that every eighth bit be a parity bit, however, we'll ignore that.
*
* If the key is not explicitly set, it'll be assumed to be all zero's.
*
* @see \phpseclib\Crypt\Base::setKey()
* @access public
* @param string $key
*/
function setKey($key)
{
// We check/cut here only up to max length of the key.
// Key padding to the proper length will be done in _setupKey()
if (strlen($key) > $this->key_length_max) {
$key = substr($key, 0, $this->key_length_max);
}
// Sets the key
parent::setKey($key);
}
/**
* Encrypts a block
*
* @see \phpseclib\Crypt\Base::_encryptBlock()
* @see \phpseclib\Crypt\Base::encrypt()
* @see self::encrypt()
* @access private
* @param string $in
* @return string
*/
function _encryptBlock($in)
{
return $this->_processBlock($in, self::ENCRYPT);
}
/**
* Decrypts a block
*
* @see \phpseclib\Crypt\Base::_decryptBlock()
* @see \phpseclib\Crypt\Base::decrypt()
* @see self::decrypt()
* @access private
* @param string $in
* @return string
*/
function _decryptBlock($in)
{
return $this->_processBlock($in, self::DECRYPT);
}
/**
* Encrypts or decrypts a 64-bit block
*
* $mode should be either self::ENCRYPT or self::DECRYPT. See
* {@link http://en.wikipedia.org/wiki/Image:Feistel.png Feistel.png} to get a general
* idea of what this function does.
*
* @see self::_encryptBlock()
* @see self::_decryptBlock()
* @access private
* @param string $block
* @param int $mode
* @return string
*/
function _processBlock($block, $mode)
{
static $sbox1, $sbox2, $sbox3, $sbox4, $sbox5, $sbox6, $sbox7, $sbox8, $shuffleip, $shuffleinvip;
if (!$sbox1) {
$sbox1 = array_map("intval", $this->sbox1);
$sbox2 = array_map("intval", $this->sbox2);
$sbox3 = array_map("intval", $this->sbox3);
$sbox4 = array_map("intval", $this->sbox4);
$sbox5 = array_map("intval", $this->sbox5);
$sbox6 = array_map("intval", $this->sbox6);
$sbox7 = array_map("intval", $this->sbox7);
$sbox8 = array_map("intval", $this->sbox8);
/* Merge $shuffle with $[inv]ipmap */
for ($i = 0; $i < 256; ++$i) {
$shuffleip[] = $this->shuffle[$this->ipmap[$i]];
$shuffleinvip[] = $this->shuffle[$this->invipmap[$i]];
}
}
$keys = $this->keys[$mode];
$ki = -1;
// Do the initial IP permutation.
$t = unpack('Nl/Nr', $block);
list($l, $r) = array($t['l'], $t['r']);
$block = ($shuffleip[ $r & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") |
($shuffleip[($r >> 8) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") |
($shuffleip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") |
($shuffleip[($r >> 24) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") |
($shuffleip[ $l & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") |
($shuffleip[($l >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") |
($shuffleip[($l >> 16) & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") |
($shuffleip[($l >> 24) & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01");
// Extract L0 and R0.
$t = unpack('Nl/Nr', $block);
list($l, $r) = array($t['l'], $t['r']);
for ($des_round = 0; $des_round < $this->des_rounds; ++$des_round) {
// Perform the 16 steps.
for ($i = 0; $i < 16; $i++) {
// start of "the Feistel (F) function" - see the following URL:
// http://en.wikipedia.org/wiki/Image:Data_Encryption_Standard_InfoBox_Diagram.png
// Merge key schedule.
$b1 = (($r >> 3) & 0x1FFFFFFF) ^ ($r << 29) ^ $keys[++$ki];
$b2 = (($r >> 31) & 0x00000001) ^ ($r << 1) ^ $keys[++$ki];
// S-box indexing.
$t = $sbox1[($b1 >> 24) & 0x3F] ^ $sbox2[($b2 >> 24) & 0x3F] ^
$sbox3[($b1 >> 16) & 0x3F] ^ $sbox4[($b2 >> 16) & 0x3F] ^
$sbox5[($b1 >> 8) & 0x3F] ^ $sbox6[($b2 >> 8) & 0x3F] ^
$sbox7[ $b1 & 0x3F] ^ $sbox8[ $b2 & 0x3F] ^ $l;
// end of "the Feistel (F) function"
$l = $r;
$r = $t;
}
// Last step should not permute L & R.
$t = $l;
$l = $r;
$r = $t;
}
// Perform the inverse IP permutation.
return ($shuffleinvip[($r >> 24) & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") |
($shuffleinvip[($l >> 24) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") |
($shuffleinvip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") |
($shuffleinvip[($l >> 16) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") |
($shuffleinvip[($r >> 8) & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") |
($shuffleinvip[($l >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") |
($shuffleinvip[ $r & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") |
($shuffleinvip[ $l & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01");
}
/**
* Creates the key schedule
*
* @see \phpseclib\Crypt\Base::_setupKey()
* @access private
*/
function _setupKey()
{
if (isset($this->kl['key']) && $this->key === $this->kl['key'] && $this->des_rounds === $this->kl['des_rounds']) {
// already expanded
return;
}
$this->kl = array('key' => $this->key, 'des_rounds' => $this->des_rounds);
static $shifts = array( // number of key bits shifted per round
1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1
);
static $pc1map = array(
0x00, 0x00, 0x08, 0x08, 0x04, 0x04, 0x0C, 0x0C,
0x02, 0x02, 0x0A, 0x0A, 0x06, 0x06, 0x0E, 0x0E,
0x10, 0x10, 0x18, 0x18, 0x14, 0x14, 0x1C, 0x1C,
0x12, 0x12, 0x1A, 0x1A, 0x16, 0x16, 0x1E, 0x1E,
0x20, 0x20, 0x28, 0x28, 0x24, 0x24, 0x2C, 0x2C,
0x22, 0x22, 0x2A, 0x2A, 0x26, 0x26, 0x2E, 0x2E,
0x30, 0x30, 0x38, 0x38, 0x34, 0x34, 0x3C, 0x3C,
0x32, 0x32, 0x3A, 0x3A, 0x36, 0x36, 0x3E, 0x3E,
0x40, 0x40, 0x48, 0x48, 0x44, 0x44, 0x4C, 0x4C,
0x42, 0x42, 0x4A, 0x4A, 0x46, 0x46, 0x4E, 0x4E,
0x50, 0x50, 0x58, 0x58, 0x54, 0x54, 0x5C, 0x5C,
0x52, 0x52, 0x5A, 0x5A, 0x56, 0x56, 0x5E, 0x5E,
0x60, 0x60, 0x68, 0x68, 0x64, 0x64, 0x6C, 0x6C,
0x62, 0x62, 0x6A, 0x6A, 0x66, 0x66, 0x6E, 0x6E,
0x70, 0x70, 0x78, 0x78, 0x74, 0x74, 0x7C, 0x7C,
0x72, 0x72, 0x7A, 0x7A, 0x76, 0x76, 0x7E, 0x7E,
0x80, 0x80, 0x88, 0x88, 0x84, 0x84, 0x8C, 0x8C,
0x82, 0x82, 0x8A, 0x8A, 0x86, 0x86, 0x8E, 0x8E,
0x90, 0x90, 0x98, 0x98, 0x94, 0x94, 0x9C, 0x9C,
0x92, 0x92, 0x9A, 0x9A, 0x96, 0x96, 0x9E, 0x9E,
0xA0, 0xA0, 0xA8, 0xA8, 0xA4, 0xA4, 0xAC, 0xAC,
0xA2, 0xA2, 0xAA, 0xAA, 0xA6, 0xA6, 0xAE, 0xAE,
0xB0, 0xB0, 0xB8, 0xB8, 0xB4, 0xB4, 0xBC, 0xBC,
0xB2, 0xB2, 0xBA, 0xBA, 0xB6, 0xB6, 0xBE, 0xBE,
0xC0, 0xC0, 0xC8, 0xC8, 0xC4, 0xC4, 0xCC, 0xCC,
0xC2, 0xC2, 0xCA, 0xCA, 0xC6, 0xC6, 0xCE, 0xCE,
0xD0, 0xD0, 0xD8, 0xD8, 0xD4, 0xD4, 0xDC, 0xDC,
0xD2, 0xD2, 0xDA, 0xDA, 0xD6, 0xD6, 0xDE, 0xDE,
0xE0, 0xE0, 0xE8, 0xE8, 0xE4, 0xE4, 0xEC, 0xEC,
0xE2, 0xE2, 0xEA, 0xEA, 0xE6, 0xE6, 0xEE, 0xEE,
0xF0, 0xF0, 0xF8, 0xF8, 0xF4, 0xF4, 0xFC, 0xFC,
0xF2, 0xF2, 0xFA, 0xFA, 0xF6, 0xF6, 0xFE, 0xFE
);
// Mapping tables for the PC-2 transformation.
static $pc2mapc1 = array(
0x00000000, 0x00000400, 0x00200000, 0x00200400,
0x00000001, 0x00000401, 0x00200001, 0x00200401,
0x02000000, 0x02000400, 0x02200000, 0x02200400,
0x02000001, 0x02000401, 0x02200001, 0x02200401
);
static $pc2mapc2 = array(
0x00000000, 0x00000800, 0x08000000, 0x08000800,
0x00010000, 0x00010800, 0x08010000, 0x08010800,
0x00000000, 0x00000800, 0x08000000, 0x08000800,
0x00010000, 0x00010800, 0x08010000, 0x08010800,
0x00000100, 0x00000900, 0x08000100, 0x08000900,
0x00010100, 0x00010900, 0x08010100, 0x08010900,
0x00000100, 0x00000900, 0x08000100, 0x08000900,
0x00010100, 0x00010900, 0x08010100, 0x08010900,
0x00000010, 0x00000810, 0x08000010, 0x08000810,
0x00010010, 0x00010810, 0x08010010, 0x08010810,
0x00000010, 0x00000810, 0x08000010, 0x08000810,
0x00010010, 0x00010810, 0x08010010, 0x08010810,
0x00000110, 0x00000910, 0x08000110, 0x08000910,
0x00010110, 0x00010910, 0x08010110, 0x08010910,
0x00000110, 0x00000910, 0x08000110, 0x08000910,
0x00010110, 0x00010910, 0x08010110, 0x08010910,
0x00040000, 0x00040800, 0x08040000, 0x08040800,
0x00050000, 0x00050800, 0x08050000, 0x08050800,
0x00040000, 0x00040800, 0x08040000, 0x08040800,
0x00050000, 0x00050800, 0x08050000, 0x08050800,
0x00040100, 0x00040900, 0x08040100, 0x08040900,
0x00050100, 0x00050900, 0x08050100, 0x08050900,
0x00040100, 0x00040900, 0x08040100, 0x08040900,
0x00050100, 0x00050900, 0x08050100, 0x08050900,
0x00040010, 0x00040810, 0x08040010, 0x08040810,
0x00050010, 0x00050810, 0x08050010, 0x08050810,
0x00040010, 0x00040810, 0x08040010, 0x08040810,
0x00050010, 0x00050810, 0x08050010, 0x08050810,
0x00040110, 0x00040910, 0x08040110, 0x08040910,
0x00050110, 0x00050910, 0x08050110, 0x08050910,
0x00040110, 0x00040910, 0x08040110, 0x08040910,
0x00050110, 0x00050910, 0x08050110, 0x08050910,
0x01000000, 0x01000800, 0x09000000, 0x09000800,
0x01010000, 0x01010800, 0x09010000, 0x09010800,
0x01000000, 0x01000800, 0x09000000, 0x09000800,
0x01010000, 0x01010800, 0x09010000, 0x09010800,
0x01000100, 0x01000900, 0x09000100, 0x09000900,
0x01010100, 0x01010900, 0x09010100, 0x09010900,
0x01000100, 0x01000900, 0x09000100, 0x09000900,
0x01010100, 0x01010900, 0x09010100, 0x09010900,
0x01000010, 0x01000810, 0x09000010, 0x09000810,
0x01010010, 0x01010810, 0x09010010, 0x09010810,
0x01000010, 0x01000810, 0x09000010, 0x09000810,
0x01010010, 0x01010810, 0x09010010, 0x09010810,
0x01000110, 0x01000910, 0x09000110, 0x09000910,
0x01010110, 0x01010910, 0x09010110, 0x09010910,
0x01000110, 0x01000910, 0x09000110, 0x09000910,
0x01010110, 0x01010910, 0x09010110, 0x09010910,
0x01040000, 0x01040800, 0x09040000, 0x09040800,
0x01050000, 0x01050800, 0x09050000, 0x09050800,
0x01040000, 0x01040800, 0x09040000, 0x09040800,
0x01050000, 0x01050800, 0x09050000, 0x09050800,
0x01040100, 0x01040900, 0x09040100, 0x09040900,
0x01050100, 0x01050900, 0x09050100, 0x09050900,
0x01040100, 0x01040900, 0x09040100, 0x09040900,
0x01050100, 0x01050900, 0x09050100, 0x09050900,
0x01040010, 0x01040810, 0x09040010, 0x09040810,
0x01050010, 0x01050810, 0x09050010, 0x09050810,
0x01040010, 0x01040810, 0x09040010, 0x09040810,
0x01050010, 0x01050810, 0x09050010, 0x09050810,
0x01040110, 0x01040910, 0x09040110, 0x09040910,
0x01050110, 0x01050910, 0x09050110, 0x09050910,
0x01040110, 0x01040910, 0x09040110, 0x09040910,
0x01050110, 0x01050910, 0x09050110, 0x09050910
);
static $pc2mapc3 = array(
0x00000000, 0x00000004, 0x00001000, 0x00001004,
0x00000000, 0x00000004, 0x00001000, 0x00001004,
0x10000000, 0x10000004, 0x10001000, 0x10001004,
0x10000000, 0x10000004, 0x10001000, 0x10001004,
0x00000020, 0x00000024, 0x00001020, 0x00001024,
0x00000020, 0x00000024, 0x00001020, 0x00001024,
0x10000020, 0x10000024, 0x10001020, 0x10001024,
0x10000020, 0x10000024, 0x10001020, 0x10001024,
0x00080000, 0x00080004, 0x00081000, 0x00081004,
0x00080000, 0x00080004, 0x00081000, 0x00081004,
0x10080000, 0x10080004, 0x10081000, 0x10081004,
0x10080000, 0x10080004, 0x10081000, 0x10081004,
0x00080020, 0x00080024, 0x00081020, 0x00081024,
0x00080020, 0x00080024, 0x00081020, 0x00081024,
0x10080020, 0x10080024, 0x10081020, 0x10081024,
0x10080020, 0x10080024, 0x10081020, 0x10081024,
0x20000000, 0x20000004, 0x20001000, 0x20001004,
0x20000000, 0x20000004, 0x20001000, 0x20001004,
0x30000000, 0x30000004, 0x30001000, 0x30001004,
0x30000000, 0x30000004, 0x30001000, 0x30001004,
0x20000020, 0x20000024, 0x20001020, 0x20001024,
0x20000020, 0x20000024, 0x20001020, 0x20001024,
0x30000020, 0x30000024, 0x30001020, 0x30001024,
0x30000020, 0x30000024, 0x30001020, 0x30001024,
0x20080000, 0x20080004, 0x20081000, 0x20081004,
0x20080000, 0x20080004, 0x20081000, 0x20081004,
0x30080000, 0x30080004, 0x30081000, 0x30081004,
0x30080000, 0x30080004, 0x30081000, 0x30081004,
0x20080020, 0x20080024, 0x20081020, 0x20081024,
0x20080020, 0x20080024, 0x20081020, 0x20081024,
0x30080020, 0x30080024, 0x30081020, 0x30081024,
0x30080020, 0x30080024, 0x30081020, 0x30081024,
0x00000002, 0x00000006, 0x00001002, 0x00001006,
0x00000002, 0x00000006, 0x00001002, 0x00001006,
0x10000002, 0x10000006, 0x10001002, 0x10001006,
0x10000002, 0x10000006, 0x10001002, 0x10001006,
0x00000022, 0x00000026, 0x00001022, 0x00001026,
0x00000022, 0x00000026, 0x00001022, 0x00001026,
0x10000022, 0x10000026, 0x10001022, 0x10001026,
0x10000022, 0x10000026, 0x10001022, 0x10001026,
0x00080002, 0x00080006, 0x00081002, 0x00081006,
0x00080002, 0x00080006, 0x00081002, 0x00081006,
0x10080002, 0x10080006, 0x10081002, 0x10081006,
0x10080002, 0x10080006, 0x10081002, 0x10081006,
0x00080022, 0x00080026, 0x00081022, 0x00081026,
0x00080022, 0x00080026, 0x00081022, 0x00081026,
0x10080022, 0x10080026, 0x10081022, 0x10081026,
0x10080022, 0x10080026, 0x10081022, 0x10081026,
0x20000002, 0x20000006, 0x20001002, 0x20001006,
0x20000002, 0x20000006, 0x20001002, 0x20001006,
0x30000002, 0x30000006, 0x30001002, 0x30001006,
0x30000002, 0x30000006, 0x30001002, 0x30001006,
0x20000022, 0x20000026, 0x20001022, 0x20001026,
0x20000022, 0x20000026, 0x20001022, 0x20001026,
0x30000022, 0x30000026, 0x30001022, 0x30001026,
0x30000022, 0x30000026, 0x30001022, 0x30001026,
0x20080002, 0x20080006, 0x20081002, 0x20081006,
0x20080002, 0x20080006, 0x20081002, 0x20081006,
0x30080002, 0x30080006, 0x30081002, 0x30081006,
0x30080002, 0x30080006, 0x30081002, 0x30081006,
0x20080022, 0x20080026, 0x20081022, 0x20081026,
0x20080022, 0x20080026, 0x20081022, 0x20081026,
0x30080022, 0x30080026, 0x30081022, 0x30081026,
0x30080022, 0x30080026, 0x30081022, 0x30081026
);
static $pc2mapc4 = array(
0x00000000, 0x00100000, 0x00000008, 0x00100008,
0x00000200, 0x00100200, 0x00000208, 0x00100208,
0x00000000, 0x00100000, 0x00000008, 0x00100008,
0x00000200, 0x00100200, 0x00000208, 0x00100208,
0x04000000, 0x04100000, 0x04000008, 0x04100008,
0x04000200, 0x04100200, 0x04000208, 0x04100208,
0x04000000, 0x04100000, 0x04000008, 0x04100008,
0x04000200, 0x04100200, 0x04000208, 0x04100208,
0x00002000, 0x00102000, 0x00002008, 0x00102008,
0x00002200, 0x00102200, 0x00002208, 0x00102208,
0x00002000, 0x00102000, 0x00002008, 0x00102008,
0x00002200, 0x00102200, 0x00002208, 0x00102208,
0x04002000, 0x04102000, 0x04002008, 0x04102008,
0x04002200, 0x04102200, 0x04002208, 0x04102208,
0x04002000, 0x04102000, 0x04002008, 0x04102008,
0x04002200, 0x04102200, 0x04002208, 0x04102208,
0x00000000, 0x00100000, 0x00000008, 0x00100008,
0x00000200, 0x00100200, 0x00000208, 0x00100208,
0x00000000, 0x00100000, 0x00000008, 0x00100008,
0x00000200, 0x00100200, 0x00000208, 0x00100208,
0x04000000, 0x04100000, 0x04000008, 0x04100008,
0x04000200, 0x04100200, 0x04000208, 0x04100208,
0x04000000, 0x04100000, 0x04000008, 0x04100008,
0x04000200, 0x04100200, 0x04000208, 0x04100208,
0x00002000, 0x00102000, 0x00002008, 0x00102008,
0x00002200, 0x00102200, 0x00002208, 0x00102208,
0x00002000, 0x00102000, 0x00002008, 0x00102008,
0x00002200, 0x00102200, 0x00002208, 0x00102208,
0x04002000, 0x04102000, 0x04002008, 0x04102008,
0x04002200, 0x04102200, 0x04002208, 0x04102208,
0x04002000, 0x04102000, 0x04002008, 0x04102008,
0x04002200, 0x04102200, 0x04002208, 0x04102208,
0x00020000, 0x00120000, 0x00020008, 0x00120008,
0x00020200, 0x00120200, 0x00020208, 0x00120208,
0x00020000, 0x00120000, 0x00020008, 0x00120008,
0x00020200, 0x00120200, 0x00020208, 0x00120208,
0x04020000, 0x04120000, 0x04020008, 0x04120008,
0x04020200, 0x04120200, 0x04020208, 0x04120208,
0x04020000, 0x04120000, 0x04020008, 0x04120008,
0x04020200, 0x04120200, 0x04020208, 0x04120208,
0x00022000, 0x00122000, 0x00022008, 0x00122008,
0x00022200, 0x00122200, 0x00022208, 0x00122208,
0x00022000, 0x00122000, 0x00022008, 0x00122008,
0x00022200, 0x00122200, 0x00022208, 0x00122208,
0x04022000, 0x04122000, 0x04022008, 0x04122008,
0x04022200, 0x04122200, 0x04022208, 0x04122208,
0x04022000, 0x04122000, 0x04022008, 0x04122008,
0x04022200, 0x04122200, 0x04022208, 0x04122208,
0x00020000, 0x00120000, 0x00020008, 0x00120008,
0x00020200, 0x00120200, 0x00020208, 0x00120208,
0x00020000, 0x00120000, 0x00020008, 0x00120008,
0x00020200, 0x00120200, 0x00020208, 0x00120208,
0x04020000, 0x04120000, 0x04020008, 0x04120008,
0x04020200, 0x04120200, 0x04020208, 0x04120208,
0x04020000, 0x04120000, 0x04020008, 0x04120008,
0x04020200, 0x04120200, 0x04020208, 0x04120208,
0x00022000, 0x00122000, 0x00022008, 0x00122008,
0x00022200, 0x00122200, 0x00022208, 0x00122208,
0x00022000, 0x00122000, 0x00022008, 0x00122008,
0x00022200, 0x00122200, 0x00022208, 0x00122208,
0x04022000, 0x04122000, 0x04022008, 0x04122008,
0x04022200, 0x04122200, 0x04022208, 0x04122208,
0x04022000, 0x04122000, 0x04022008, 0x04122008,
0x04022200, 0x04122200, 0x04022208, 0x04122208
);
static $pc2mapd1 = array(
0x00000000, 0x00000001, 0x08000000, 0x08000001,
0x00200000, 0x00200001, 0x08200000, 0x08200001,
0x00000002, 0x00000003, 0x08000002, 0x08000003,
0x00200002, 0x00200003, 0x08200002, 0x08200003
);
static $pc2mapd2 = array(
0x00000000, 0x00100000, 0x00000800, 0x00100800,
0x00000000, 0x00100000, 0x00000800, 0x00100800,
0x04000000, 0x04100000, 0x04000800, 0x04100800,
0x04000000, 0x04100000, 0x04000800, 0x04100800,
0x00000004, 0x00100004, 0x00000804, 0x00100804,
0x00000004, 0x00100004, 0x00000804, 0x00100804,
0x04000004, 0x04100004, 0x04000804, 0x04100804,
0x04000004, 0x04100004, 0x04000804, 0x04100804,
0x00000000, 0x00100000, 0x00000800, 0x00100800,
0x00000000, 0x00100000, 0x00000800, 0x00100800,
0x04000000, 0x04100000, 0x04000800, 0x04100800,
0x04000000, 0x04100000, 0x04000800, 0x04100800,
0x00000004, 0x00100004, 0x00000804, 0x00100804,
0x00000004, 0x00100004, 0x00000804, 0x00100804,
0x04000004, 0x04100004, 0x04000804, 0x04100804,
0x04000004, 0x04100004, 0x04000804, 0x04100804,
0x00000200, 0x00100200, 0x00000A00, 0x00100A00,
0x00000200, 0x00100200, 0x00000A00, 0x00100A00,
0x04000200, 0x04100200, 0x04000A00, 0x04100A00,
0x04000200, 0x04100200, 0x04000A00, 0x04100A00,
0x00000204, 0x00100204, 0x00000A04, 0x00100A04,
0x00000204, 0x00100204, 0x00000A04, 0x00100A04,
0x04000204, 0x04100204, 0x04000A04, 0x04100A04,
0x04000204, 0x04100204, 0x04000A04, 0x04100A04,
0x00000200, 0x00100200, 0x00000A00, 0x00100A00,
0x00000200, 0x00100200, 0x00000A00, 0x00100A00,
0x04000200, 0x04100200, 0x04000A00, 0x04100A00,
0x04000200, 0x04100200, 0x04000A00, 0x04100A00,
0x00000204, 0x00100204, 0x00000A04, 0x00100A04,
0x00000204, 0x00100204, 0x00000A04, 0x00100A04,
0x04000204, 0x04100204, 0x04000A04, 0x04100A04,
0x04000204, 0x04100204, 0x04000A04, 0x04100A04,
0x00020000, 0x00120000, 0x00020800, 0x00120800,
0x00020000, 0x00120000, 0x00020800, 0x00120800,
0x04020000, 0x04120000, 0x04020800, 0x04120800,
0x04020000, 0x04120000, 0x04020800, 0x04120800,
0x00020004, 0x00120004, 0x00020804, 0x00120804,
0x00020004, 0x00120004, 0x00020804, 0x00120804,
0x04020004, 0x04120004, 0x04020804, 0x04120804,
0x04020004, 0x04120004, 0x04020804, 0x04120804,
0x00020000, 0x00120000, 0x00020800, 0x00120800,
0x00020000, 0x00120000, 0x00020800, 0x00120800,
0x04020000, 0x04120000, 0x04020800, 0x04120800,
0x04020000, 0x04120000, 0x04020800, 0x04120800,
0x00020004, 0x00120004, 0x00020804, 0x00120804,
0x00020004, 0x00120004, 0x00020804, 0x00120804,
0x04020004, 0x04120004, 0x04020804, 0x04120804,
0x04020004, 0x04120004, 0x04020804, 0x04120804,
0x00020200, 0x00120200, 0x00020A00, 0x00120A00,
0x00020200, 0x00120200, 0x00020A00, 0x00120A00,
0x04020200, 0x04120200, 0x04020A00, 0x04120A00,
0x04020200, 0x04120200, 0x04020A00, 0x04120A00,
0x00020204, 0x00120204, 0x00020A04, 0x00120A04,
0x00020204, 0x00120204, 0x00020A04, 0x00120A04,
0x04020204, 0x04120204, 0x04020A04, 0x04120A04,
0x04020204, 0x04120204, 0x04020A04, 0x04120A04,
0x00020200, 0x00120200, 0x00020A00, 0x00120A00,
0x00020200, 0x00120200, 0x00020A00, 0x00120A00,
0x04020200, 0x04120200, 0x04020A00, 0x04120A00,
0x04020200, 0x04120200, 0x04020A00, 0x04120A00,
0x00020204, 0x00120204, 0x00020A04, 0x00120A04,
0x00020204, 0x00120204, 0x00020A04, 0x00120A04,
0x04020204, 0x04120204, 0x04020A04, 0x04120A04,
0x04020204, 0x04120204, 0x04020A04, 0x04120A04
);
static $pc2mapd3 = array(
0x00000000, 0x00010000, 0x02000000, 0x02010000,
0x00000020, 0x00010020, 0x02000020, 0x02010020,
0x00040000, 0x00050000, 0x02040000, 0x02050000,
0x00040020, 0x00050020, 0x02040020, 0x02050020,
0x00002000, 0x00012000, 0x02002000, 0x02012000,
0x00002020, 0x00012020, 0x02002020, 0x02012020,
0x00042000, 0x00052000, 0x02042000, 0x02052000,
0x00042020, 0x00052020, 0x02042020, 0x02052020,
0x00000000, 0x00010000, 0x02000000, 0x02010000,
0x00000020, 0x00010020, 0x02000020, 0x02010020,
0x00040000, 0x00050000, 0x02040000, 0x02050000,
0x00040020, 0x00050020, 0x02040020, 0x02050020,
0x00002000, 0x00012000, 0x02002000, 0x02012000,
0x00002020, 0x00012020, 0x02002020, 0x02012020,
0x00042000, 0x00052000, 0x02042000, 0x02052000,
0x00042020, 0x00052020, 0x02042020, 0x02052020,
0x00000010, 0x00010010, 0x02000010, 0x02010010,
0x00000030, 0x00010030, 0x02000030, 0x02010030,
0x00040010, 0x00050010, 0x02040010, 0x02050010,
0x00040030, 0x00050030, 0x02040030, 0x02050030,
0x00002010, 0x00012010, 0x02002010, 0x02012010,
0x00002030, 0x00012030, 0x02002030, 0x02012030,
0x00042010, 0x00052010, 0x02042010, 0x02052010,
0x00042030, 0x00052030, 0x02042030, 0x02052030,
0x00000010, 0x00010010, 0x02000010, 0x02010010,
0x00000030, 0x00010030, 0x02000030, 0x02010030,
0x00040010, 0x00050010, 0x02040010, 0x02050010,
0x00040030, 0x00050030, 0x02040030, 0x02050030,
0x00002010, 0x00012010, 0x02002010, 0x02012010,
0x00002030, 0x00012030, 0x02002030, 0x02012030,
0x00042010, 0x00052010, 0x02042010, 0x02052010,
0x00042030, 0x00052030, 0x02042030, 0x02052030,
0x20000000, 0x20010000, 0x22000000, 0x22010000,
0x20000020, 0x20010020, 0x22000020, 0x22010020,
0x20040000, 0x20050000, 0x22040000, 0x22050000,
0x20040020, 0x20050020, 0x22040020, 0x22050020,
0x20002000, 0x20012000, 0x22002000, 0x22012000,
0x20002020, 0x20012020, 0x22002020, 0x22012020,
0x20042000, 0x20052000, 0x22042000, 0x22052000,
0x20042020, 0x20052020, 0x22042020, 0x22052020,
0x20000000, 0x20010000, 0x22000000, 0x22010000,
0x20000020, 0x20010020, 0x22000020, 0x22010020,
0x20040000, 0x20050000, 0x22040000, 0x22050000,
0x20040020, 0x20050020, 0x22040020, 0x22050020,
0x20002000, 0x20012000, 0x22002000, 0x22012000,
0x20002020, 0x20012020, 0x22002020, 0x22012020,
0x20042000, 0x20052000, 0x22042000, 0x22052000,
0x20042020, 0x20052020, 0x22042020, 0x22052020,
0x20000010, 0x20010010, 0x22000010, 0x22010010,
0x20000030, 0x20010030, 0x22000030, 0x22010030,
0x20040010, 0x20050010, 0x22040010, 0x22050010,
0x20040030, 0x20050030, 0x22040030, 0x22050030,
0x20002010, 0x20012010, 0x22002010, 0x22012010,
0x20002030, 0x20012030, 0x22002030, 0x22012030,
0x20042010, 0x20052010, 0x22042010, 0x22052010,
0x20042030, 0x20052030, 0x22042030, 0x22052030,
0x20000010, 0x20010010, 0x22000010, 0x22010010,
0x20000030, 0x20010030, 0x22000030, 0x22010030,
0x20040010, 0x20050010, 0x22040010, 0x22050010,
0x20040030, 0x20050030, 0x22040030, 0x22050030,
0x20002010, 0x20012010, 0x22002010, 0x22012010,
0x20002030, 0x20012030, 0x22002030, 0x22012030,
0x20042010, 0x20052010, 0x22042010, 0x22052010,
0x20042030, 0x20052030, 0x22042030, 0x22052030
);
static $pc2mapd4 = array(
0x00000000, 0x00000400, 0x01000000, 0x01000400,
0x00000000, 0x00000400, 0x01000000, 0x01000400,
0x00000100, 0x00000500, 0x01000100, 0x01000500,
0x00000100, 0x00000500, 0x01000100, 0x01000500,
0x10000000, 0x10000400, 0x11000000, 0x11000400,
0x10000000, 0x10000400, 0x11000000, 0x11000400,
0x10000100, 0x10000500, 0x11000100, 0x11000500,
0x10000100, 0x10000500, 0x11000100, 0x11000500,
0x00080000, 0x00080400, 0x01080000, 0x01080400,
0x00080000, 0x00080400, 0x01080000, 0x01080400,
0x00080100, 0x00080500, 0x01080100, 0x01080500,
0x00080100, 0x00080500, 0x01080100, 0x01080500,
0x10080000, 0x10080400, 0x11080000, 0x11080400,
0x10080000, 0x10080400, 0x11080000, 0x11080400,
0x10080100, 0x10080500, 0x11080100, 0x11080500,
0x10080100, 0x10080500, 0x11080100, 0x11080500,
0x00000008, 0x00000408, 0x01000008, 0x01000408,
0x00000008, 0x00000408, 0x01000008, 0x01000408,
0x00000108, 0x00000508, 0x01000108, 0x01000508,
0x00000108, 0x00000508, 0x01000108, 0x01000508,
0x10000008, 0x10000408, 0x11000008, 0x11000408,
0x10000008, 0x10000408, 0x11000008, 0x11000408,
0x10000108, 0x10000508, 0x11000108, 0x11000508,
0x10000108, 0x10000508, 0x11000108, 0x11000508,
0x00080008, 0x00080408, 0x01080008, 0x01080408,
0x00080008, 0x00080408, 0x01080008, 0x01080408,
0x00080108, 0x00080508, 0x01080108, 0x01080508,
0x00080108, 0x00080508, 0x01080108, 0x01080508,
0x10080008, 0x10080408, 0x11080008, 0x11080408,
0x10080008, 0x10080408, 0x11080008, 0x11080408,
0x10080108, 0x10080508, 0x11080108, 0x11080508,
0x10080108, 0x10080508, 0x11080108, 0x11080508,
0x00001000, 0x00001400, 0x01001000, 0x01001400,
0x00001000, 0x00001400, 0x01001000, 0x01001400,
0x00001100, 0x00001500, 0x01001100, 0x01001500,
0x00001100, 0x00001500, 0x01001100, 0x01001500,
0x10001000, 0x10001400, 0x11001000, 0x11001400,
0x10001000, 0x10001400, 0x11001000, 0x11001400,
0x10001100, 0x10001500, 0x11001100, 0x11001500,
0x10001100, 0x10001500, 0x11001100, 0x11001500,
0x00081000, 0x00081400, 0x01081000, 0x01081400,
0x00081000, 0x00081400, 0x01081000, 0x01081400,
0x00081100, 0x00081500, 0x01081100, 0x01081500,
0x00081100, 0x00081500, 0x01081100, 0x01081500,
0x10081000, 0x10081400, 0x11081000, 0x11081400,
0x10081000, 0x10081400, 0x11081000, 0x11081400,
0x10081100, 0x10081500, 0x11081100, 0x11081500,
0x10081100, 0x10081500, 0x11081100, 0x11081500,
0x00001008, 0x00001408, 0x01001008, 0x01001408,
0x00001008, 0x00001408, 0x01001008, 0x01001408,
0x00001108, 0x00001508, 0x01001108, 0x01001508,
0x00001108, 0x00001508, 0x01001108, 0x01001508,
0x10001008, 0x10001408, 0x11001008, 0x11001408,
0x10001008, 0x10001408, 0x11001008, 0x11001408,
0x10001108, 0x10001508, 0x11001108, 0x11001508,
0x10001108, 0x10001508, 0x11001108, 0x11001508,
0x00081008, 0x00081408, 0x01081008, 0x01081408,
0x00081008, 0x00081408, 0x01081008, 0x01081408,
0x00081108, 0x00081508, 0x01081108, 0x01081508,
0x00081108, 0x00081508, 0x01081108, 0x01081508,
0x10081008, 0x10081408, 0x11081008, 0x11081408,
0x10081008, 0x10081408, 0x11081008, 0x11081408,
0x10081108, 0x10081508, 0x11081108, 0x11081508,
0x10081108, 0x10081508, 0x11081108, 0x11081508
);
$keys = array();
for ($des_round = 0; $des_round < $this->des_rounds; ++$des_round) {
// pad the key and remove extra characters as appropriate.
$key = str_pad(substr($this->key, $des_round * 8, 8), 8, "\0");
// Perform the PC/1 transformation and compute C and D.
$t = unpack('Nl/Nr', $key);
list($l, $r) = array($t['l'], $t['r']);
$key = ($this->shuffle[$pc1map[ $r & 0xFF]] & "\x80\x80\x80\x80\x80\x80\x80\x00") |
($this->shuffle[$pc1map[($r >> 8) & 0xFF]] & "\x40\x40\x40\x40\x40\x40\x40\x00") |
($this->shuffle[$pc1map[($r >> 16) & 0xFF]] & "\x20\x20\x20\x20\x20\x20\x20\x00") |
($this->shuffle[$pc1map[($r >> 24) & 0xFF]] & "\x10\x10\x10\x10\x10\x10\x10\x00") |
($this->shuffle[$pc1map[ $l & 0xFF]] & "\x08\x08\x08\x08\x08\x08\x08\x00") |
($this->shuffle[$pc1map[($l >> 8) & 0xFF]] & "\x04\x04\x04\x04\x04\x04\x04\x00") |
($this->shuffle[$pc1map[($l >> 16) & 0xFF]] & "\x02\x02\x02\x02\x02\x02\x02\x00") |
($this->shuffle[$pc1map[($l >> 24) & 0xFF]] & "\x01\x01\x01\x01\x01\x01\x01\x00");
$key = unpack('Nc/Nd', $key);
$c = ( $key['c'] >> 4) & 0x0FFFFFFF;
$d = (($key['d'] >> 4) & 0x0FFFFFF0) | ($key['c'] & 0x0F);
$keys[$des_round] = array(
self::ENCRYPT => array(),
self::DECRYPT => array_fill(0, 32, 0)
);
for ($i = 0, $ki = 31; $i < 16; ++$i, $ki-= 2) {
$c <<= $shifts[$i];
$c = ($c | ($c >> 28)) & 0x0FFFFFFF;
$d <<= $shifts[$i];
$d = ($d | ($d >> 28)) & 0x0FFFFFFF;
// Perform the PC-2 transformation.
$cp = $pc2mapc1[ $c >> 24 ] | $pc2mapc2[($c >> 16) & 0xFF] |
$pc2mapc3[($c >> 8) & 0xFF] | $pc2mapc4[ $c & 0xFF];
$dp = $pc2mapd1[ $d >> 24 ] | $pc2mapd2[($d >> 16) & 0xFF] |
$pc2mapd3[($d >> 8) & 0xFF] | $pc2mapd4[ $d & 0xFF];
// Reorder: odd bytes/even bytes. Push the result in key schedule.
$val1 = ( $cp & intval(0xFF000000)) | (($cp << 8) & 0x00FF0000) |
(($dp >> 16) & 0x0000FF00) | (($dp >> 8) & 0x000000FF);
$val2 = (($cp << 8) & intval(0xFF000000)) | (($cp << 16) & 0x00FF0000) |
(($dp >> 8) & 0x0000FF00) | ( $dp & 0x000000FF);
$keys[$des_round][self::ENCRYPT][ ] = $val1;
$keys[$des_round][self::DECRYPT][$ki - 1] = $val1;
$keys[$des_round][self::ENCRYPT][ ] = $val2;
$keys[$des_round][self::DECRYPT][$ki ] = $val2;
}
}
switch ($this->des_rounds) {
case 3: // 3DES keys
$this->keys = array(
self::ENCRYPT => array_merge(
$keys[0][self::ENCRYPT],
$keys[1][self::DECRYPT],
$keys[2][self::ENCRYPT]
),
self::DECRYPT => array_merge(
$keys[2][self::DECRYPT],
$keys[1][self::ENCRYPT],
$keys[0][self::DECRYPT]
)
);
break;
// case 1: // DES keys
default:
$this->keys = array(
self::ENCRYPT => $keys[0][self::ENCRYPT],
self::DECRYPT => $keys[0][self::DECRYPT]
);
}
}
/**
* Setup the performance-optimized function for de/encrypt()
*
* @see \phpseclib\Crypt\Base::_setupInlineCrypt()
* @access private
*/
function _setupInlineCrypt()
{
$lambda_functions =& self::_getLambdaFunctions();
// Engine configuration for:
// - DES ($des_rounds == 1) or
// - 3DES ($des_rounds == 3)
$des_rounds = $this->des_rounds;
// We create max. 10 hi-optimized code for memory reason. Means: For each $key one ultra fast inline-crypt function.
// (Currently, for DES, one generated $lambda_function cost on php5.5@32bit ~135kb unfreeable mem and ~230kb on php5.5@64bit)
// (Currently, for TripleDES, one generated $lambda_function cost on php5.5@32bit ~240kb unfreeable mem and ~340kb on php5.5@64bit)
// After that, we'll still create very fast optimized code but not the hi-ultimative code, for each $mode one
$gen_hi_opt_code = (bool)( count($lambda_functions) < 10 );
// Generation of a unique hash for our generated code
$code_hash = "Crypt_DES, $des_rounds, {$this->mode}";
if ($gen_hi_opt_code) {
// For hi-optimized code, we create for each combination of
// $mode, $des_rounds and $this->key its own encrypt/decrypt function.
// After max 10 hi-optimized functions, we create generic
// (still very fast.. but not ultra) functions for each $mode/$des_rounds
// Currently 2 * 5 generic functions will be then max. possible.
$code_hash = str_pad($code_hash, 32) . $this->_hashInlineCryptFunction($this->key);
}
// Is there a re-usable $lambda_functions in there? If not, we have to create it.
if (!isset($lambda_functions[$code_hash])) {
// Init code for both, encrypt and decrypt.
$init_crypt = 'static $sbox1, $sbox2, $sbox3, $sbox4, $sbox5, $sbox6, $sbox7, $sbox8, $shuffleip, $shuffleinvip;
if (!$sbox1) {
$sbox1 = array_map("intval", $self->sbox1);
$sbox2 = array_map("intval", $self->sbox2);
$sbox3 = array_map("intval", $self->sbox3);
$sbox4 = array_map("intval", $self->sbox4);
$sbox5 = array_map("intval", $self->sbox5);
$sbox6 = array_map("intval", $self->sbox6);
$sbox7 = array_map("intval", $self->sbox7);
$sbox8 = array_map("intval", $self->sbox8);'
/* Merge $shuffle with $[inv]ipmap */ . '
for ($i = 0; $i < 256; ++$i) {
$shuffleip[] = $self->shuffle[$self->ipmap[$i]];
$shuffleinvip[] = $self->shuffle[$self->invipmap[$i]];
}
}
';
switch (true) {
case $gen_hi_opt_code:
// In Hi-optimized code mode, we use our [3]DES key schedule as hardcoded integers.
// No futher initialisation of the $keys schedule is necessary.
// That is the extra performance boost.
$k = array(
self::ENCRYPT => $this->keys[self::ENCRYPT],
self::DECRYPT => $this->keys[self::DECRYPT]
);
$init_encrypt = '';
$init_decrypt = '';
break;
default:
// In generic optimized code mode, we have to use, as the best compromise [currently],
// our key schedule as $ke/$kd arrays. (with hardcoded indexes...)
$k = array(
self::ENCRYPT => array(),
self::DECRYPT => array()
);
for ($i = 0, $c = count($this->keys[self::ENCRYPT]); $i < $c; ++$i) {
$k[self::ENCRYPT][$i] = '$ke[' . $i . ']';
$k[self::DECRYPT][$i] = '$kd[' . $i . ']';
}
$init_encrypt = '$ke = $self->keys[$self::ENCRYPT];';
$init_decrypt = '$kd = $self->keys[$self::DECRYPT];';
break;
}
// Creating code for en- and decryption.
$crypt_block = array();
foreach (array(self::ENCRYPT, self::DECRYPT) as $c) {
/* Do the initial IP permutation. */
$crypt_block[$c] = '
$in = unpack("N*", $in);
$l = $in[1];
$r = $in[2];
$in = unpack("N*",
($shuffleip[ $r & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") |
($shuffleip[($r >> 8) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") |
($shuffleip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") |
($shuffleip[($r >> 24) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") |
($shuffleip[ $l & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") |
($shuffleip[($l >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") |
($shuffleip[($l >> 16) & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") |
($shuffleip[($l >> 24) & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01")
);
' . /* Extract L0 and R0 */ '
$l = $in[1];
$r = $in[2];
';
$l = '$l';
$r = '$r';
// Perform DES or 3DES.
for ($ki = -1, $des_round = 0; $des_round < $des_rounds; ++$des_round) {
// Perform the 16 steps.
for ($i = 0; $i < 16; ++$i) {
// start of "the Feistel (F) function" - see the following URL:
// http://en.wikipedia.org/wiki/Image:Data_Encryption_Standard_InfoBox_Diagram.png
// Merge key schedule.
$crypt_block[$c].= '
$b1 = ((' . $r . ' >> 3) & 0x1FFFFFFF) ^ (' . $r . ' << 29) ^ ' . $k[$c][++$ki] . ';
$b2 = ((' . $r . ' >> 31) & 0x00000001) ^ (' . $r . ' << 1) ^ ' . $k[$c][++$ki] . ';' .
/* S-box indexing. */
$l . ' = $sbox1[($b1 >> 24) & 0x3F] ^ $sbox2[($b2 >> 24) & 0x3F] ^
$sbox3[($b1 >> 16) & 0x3F] ^ $sbox4[($b2 >> 16) & 0x3F] ^
$sbox5[($b1 >> 8) & 0x3F] ^ $sbox6[($b2 >> 8) & 0x3F] ^
$sbox7[ $b1 & 0x3F] ^ $sbox8[ $b2 & 0x3F] ^ ' . $l . ';
';
// end of "the Feistel (F) function"
// swap L & R
list($l, $r) = array($r, $l);
}
list($l, $r) = array($r, $l);
}
// Perform the inverse IP permutation.
$crypt_block[$c].= '$in =
($shuffleinvip[($l >> 24) & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") |
($shuffleinvip[($r >> 24) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") |
($shuffleinvip[($l >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") |
($shuffleinvip[($r >> 16) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") |
($shuffleinvip[($l >> 8) & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") |
($shuffleinvip[($r >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") |
($shuffleinvip[ $l & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") |
($shuffleinvip[ $r & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01");
';
}
// Creates the inline-crypt function
$lambda_functions[$code_hash] = $this->_createInlineCryptFunction(
array(
'init_crypt' => $init_crypt,
'init_encrypt' => $init_encrypt,
'init_decrypt' => $init_decrypt,
'encrypt_block' => $crypt_block[self::ENCRYPT],
'decrypt_block' => $crypt_block[self::DECRYPT]
)
);
}
// Set the inline-crypt function as callback in: $this->inline_crypt
$this->inline_crypt = $lambda_functions[$code_hash];
}
}
PK ��$Z�� 8'� '� & phpseclib/phpseclib/Crypt/Blowfish.phpnu �[��� <?php
/**
* Pure-PHP implementation of Blowfish.
*
* Uses mcrypt, if available, and an internal implementation, otherwise.
*
* PHP version 5
*
* Useful resources are as follows:
*
* - {@link http://en.wikipedia.org/wiki/Blowfish_(cipher) Wikipedia description of Blowfish}
*
* # An overview of bcrypt vs Blowfish
*
* OpenSSH private keys use a customized version of bcrypt. Specifically, instead of
* encrypting OrpheanBeholderScryDoubt 64 times OpenSSH's bcrypt variant encrypts
* OxychromaticBlowfishSwatDynamite 64 times. so we can't use crypt().
*
* bcrypt is basically Blowfish but instead of performing the key expansion once it performs
* the expansion 129 times for each round, with the first key expansion interleaving the salt
* and password. This renders OpenSSL unusable and forces us to use a pure-PHP implementation
* of blowfish.
*
* # phpseclib's four different _encryptBlock() implementations
*
* When using Blowfish as an encryption algorithm, _encryptBlock() is called 9 + 512 +
* (the number of blocks in the plaintext) times.
*
* Each of the first 9 calls to _encryptBlock() modify the P-array. Each of the next 512
* calls modify the S-boxes. The remaining _encryptBlock() calls operate on the plaintext to
* produce the ciphertext. In the pure-PHP implementation of Blowfish these remaining
* _encryptBlock() calls are highly optimized through the use of eval(). Among other things,
* P-array lookups are eliminated by hard-coding the key-dependent P-array values, and thus we
* have explained 2 of the 4 different _encryptBlock() implementations.
*
* With bcrypt things are a bit different. _encryptBlock() is called 1,079,296 times,
* assuming 16 rounds (which is what OpenSSH's bcrypt defaults to). The eval()-optimized
* _encryptBlock() isn't as beneficial because the P-array values are not constant. Well, they
* are constant, but only for, at most, 777 _encryptBlock() calls, which is equivalent to ~6KB
* of data. The average length of back to back _encryptBlock() calls with a fixed P-array is
* 514.12, which is ~4KB of data. Creating an eval()-optimized _encryptBlock() has an upfront
* cost, which is CPU dependent and is probably not going to be worth it for just ~4KB of
* data. Conseqeuently, bcrypt does not benefit from the eval()-optimized _encryptBlock().
*
* The regular _encryptBlock() does unpack() and pack() on every call, as well, and that can
* begin to add up after one million function calls.
*
* In theory, one might think that it might be beneficial to rewrite all block ciphers so
* that, instead of passing strings to _encryptBlock(), you convert the string to an array of
* integers and then pass successive subarrays of that array to _encryptBlock. This, however,
* kills PHP's memory use. Like let's say you have a 1MB long string. After doing
* $in = str_repeat('a', 1024 * 1024); PHP's memory utilization jumps up by ~1MB. After doing
* $blocks = str_split($in, 4); it jumps up by an additional ~16MB. After
* $blocks = array_map(fn($x) => unpack('N*', $x), $blocks); it jumps up by an additional
* ~90MB, yielding a 106x increase in memory usage. Consequently, it bcrypt calls a different
* _encryptBlock() then the regular Blowfish does. That said, the Blowfish _encryptBlock() is
* basically just a thin wrapper around the bcrypt _encryptBlock(), so there's that.
*
* This explains 3 of the 4 _encryptBlock() implementations. the last _encryptBlock()
* implementation can best be understood by doing Ctrl + F and searching for where
* CRYPT_BASE_USE_REG_INTVAL is defined.
*
* # phpseclib's three different _setupKey() implementations
*
* Every bcrypt round is the equivalent of encrypting 512KB of data. Since OpenSSH uses 16
* rounds by default that's ~8MB of data that's essentially being encrypted whenever
* you use bcrypt. That's a lot of data, however, bcrypt operates within tighter constraints
* than regular Blowfish, so we can use that to our advantage. In particular, whereas Blowfish
* supports variable length keys, in bcrypt, the initial "key" is the sha512 hash of the
* password. sha512 hashes are 512 bits or 64 bytes long and thus the bcrypt keys are of a
* fixed length whereas Blowfish keys are not of a fixed length.
*
* bcrypt actually has two different key expansion steps. The first one (expandstate) is
* constantly XOR'ing every _encryptBlock() parameter against the salt prior _encryptBlock()'s
* being called. The second one (expand0state) is more similar to Blowfish's _setupKey()
* but it can still use the fixed length key optimization discussed above and can do away with
* the pack() / unpack() calls.
*
* I suppose _setupKey() could be made to be a thin wrapper around expandstate() but idk it's
* just a lot of work for very marginal benefits as _setupKey() is only called once for
* regular Blowfish vs the 128 times it's called --per round-- with bcrypt.
*
* # blowfish + bcrypt in the same class
*
* Altho there's a lot of Blowfish code that bcrypt doesn't re-use, bcrypt does re-use the
* initial S-boxes, the initial P-array and the int-only _encryptBlock() implementation.
*
* # Credit
*
* phpseclib's bcrypt implementation is based losely off of OpenSSH's implementation:
*
* https://github.com/openssh/openssh-portable/blob/master/openbsd-compat/bcrypt_pbkdf.c
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $blowfish = new \phpseclib\Crypt\Blowfish();
*
* $blowfish->setKey('12345678901234567890123456789012');
*
* $plaintext = str_repeat('a', 1024);
*
* echo $blowfish->decrypt($blowfish->encrypt($plaintext));
* ?>
* </code>
*
* @category Crypt
* @package Blowfish
* @author Jim Wigginton <terrafrost@php.net>
* @author Hans-Juergen Petrich <petrich@tronic-media.com>
* @copyright 2007 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt;
/**
* Pure-PHP implementation of Blowfish.
*
* @package Blowfish
* @author Jim Wigginton <terrafrost@php.net>
* @author Hans-Juergen Petrich <petrich@tronic-media.com>
* @access public
*/
class Blowfish extends Base
{
/**
* Block Length of the cipher
*
* @see \phpseclib\Crypt\Base::block_size
* @var int
* @access private
*/
var $block_size = 8;
/**
* The mcrypt specific name of the cipher
*
* @see \phpseclib\Crypt\Base::cipher_name_mcrypt
* @var string
* @access private
*/
var $cipher_name_mcrypt = 'blowfish';
/**
* Optimizing value while CFB-encrypting
*
* @see \phpseclib\Crypt\Base::cfb_init_len
* @var int
* @access private
*/
var $cfb_init_len = 500;
/**
* SHA512 Object
*
* @see self::bcrypt_pbkdf
* @var object
* @access private
*/
var $sha512;
/**
* The fixed subkeys boxes ($sbox0 - $sbox3) with 256 entries each
*
* S-Box 0
*
* @access private
* @var array
*/
var $sbox0 = array(
0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16, 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee, 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef, 0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60, 0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce, 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e, 0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193, 0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88, 0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e, 0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3, 0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88, 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6, 0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b, 0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba, 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f, 0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3, 0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279, 0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab, 0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db, 0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0, 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790, 0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4, 0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7, 0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad, 0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299, 0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477, 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49, 0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa, 0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41, 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400, 0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664, 0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a
);
/**
* S-Box 1
*
* @access private
* @var array
*/
var $sbox1 = array(
0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623, 0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266,
0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1, 0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e,
0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6, 0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e, 0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1,
0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737, 0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff, 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701, 0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7,
0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41, 0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331,
0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf, 0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e, 0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c, 0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2,
0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16, 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b, 0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509,
0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e, 0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3,
0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f, 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4, 0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960,
0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66, 0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28,
0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802, 0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510, 0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf,
0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14, 0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50, 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8, 0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281,
0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99, 0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696,
0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128, 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0, 0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105, 0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250,
0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3, 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00, 0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061,
0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb, 0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e,
0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735, 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9, 0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340,
0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20, 0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7
);
/**
* S-Box 2
*
* @access private
* @var array
*/
var $sbox2 = array(
0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934, 0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af, 0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840,
0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45, 0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a, 0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee, 0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42, 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2, 0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527, 0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b,
0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33, 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3, 0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17, 0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564,
0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b, 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922, 0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0, 0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e,
0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37, 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804, 0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3, 0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb,
0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d, 0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350, 0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a, 0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d, 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f, 0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2, 0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9,
0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2, 0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e, 0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10, 0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169,
0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52, 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5, 0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634, 0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76,
0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24, 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4, 0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837, 0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0
);
/**
* S-Box 3
*
* @access private
* @var array
*/
var $sbox3 = array(
0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b, 0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe,
0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b, 0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8, 0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304, 0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22,
0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4, 0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9, 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593, 0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51,
0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28, 0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b, 0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c, 0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a, 0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb, 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991, 0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32,
0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680, 0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae, 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5, 0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47,
0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370, 0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84, 0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8, 0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd,
0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9, 0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38, 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c, 0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525,
0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1, 0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964, 0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8, 0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f, 0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02, 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614, 0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a,
0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6, 0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0, 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e, 0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9,
0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f, 0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6
);
/**
* P-Array consists of 18 32-bit subkeys
*
* @var array
* @access private
*/
var $parray = array(
0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344, 0xa4093822, 0x299f31d0,
0x082efa98, 0xec4e6c89, 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917, 0x9216d5d9, 0x8979fb1b
);
/**
* The BCTX-working Array
*
* Holds the expanded key [p] and the key-depended s-boxes [sb]
*
* @var array
* @access private
*/
var $bctx;
/**
* Holds the last used key
*
* @var array
* @access private
*/
var $kl;
/**
* The Key Length (in bytes)
*
* @see \phpseclib\Crypt\Base::setKeyLength()
* @var int
* @access private
* @internal The max value is 256 / 8 = 32, the min value is 128 / 8 = 16. Exists in conjunction with $Nk
* because the encryption / decryption / key schedule creation requires this number and not $key_length. We could
* derive this from $key_length or vice versa, but that'd mean we'd have to do multiple shift operations, so in lieu
* of that, we'll just precompute it once.
*/
var $key_length = 16;
/**
* Default Constructor.
*
* Determines whether or not the mcrypt extension should be used.
*
* $mode could be:
*
* - CRYPT_MODE_ECB
*
* - CRYPT_MODE_CBC
*
* - CRYPT_MODE_CTR
*
* - CRYPT_MODE_CFB
*
* - CRYPT_MODE_OFB
*
* (or the alias constants of the chosen cipher, for example for AES: CRYPT_AES_MODE_ECB or CRYPT_AES_MODE_CBC ...)
*
* If not explicitly set, CRYPT_MODE_CBC will be used.
*
* @param int $mode
* @access public
*/
function __construct($mode = self::MODE_CBC)
{
parent::__construct($mode);
$this->sbox0 = array_map('intval', $this->sbox0);
$this->sbox1 = array_map('intval', $this->sbox1);
$this->sbox2 = array_map('intval', $this->sbox2);
$this->sbox3 = array_map('intval', $this->sbox3);
$this->parray = array_map('intval', $this->parray);
}
/**
* Sets the key length.
*
* Key lengths can be between 32 and 448 bits.
*
* @access public
* @param int $length
*/
function setKeyLength($length)
{
if ($length < 32) {
$this->key_length = 4;
} elseif ($length > 448) {
$this->key_length = 56;
} else {
$this->key_length = $length >> 3;
}
parent::setKeyLength($length);
}
/**
* Test for engine validity
*
* This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
*
* @see \phpseclib\Crypt\Base::isValidEngine()
* @param int $engine
* @access public
* @return bool
*/
function isValidEngine($engine)
{
if ($engine == self::ENGINE_OPENSSL) {
if (version_compare(PHP_VERSION, '5.3.7') < 0 && $this->key_length != 16) {
return false;
}
if ($this->key_length < 16) {
return false;
}
$this->cipher_name_openssl_ecb = 'bf-ecb';
$this->cipher_name_openssl = 'bf-' . $this->_openssl_translate_mode();
}
return parent::isValidEngine($engine);
}
/**
* Setup the key (expansion)
*
* @see \phpseclib\Crypt\Base::_setupKey()
* @access private
*/
function _setupKey()
{
if (isset($this->kl['key']) && $this->key === $this->kl['key']) {
// already expanded
return;
}
$this->kl = array('key' => $this->key);
/* key-expanding p[] and S-Box building sb[] */
$this->bctx = array(
'p' => array(),
'sb' => array(
$this->sbox0,
$this->sbox1,
$this->sbox2,
$this->sbox3
)
);
// unpack binary string in unsigned chars
$key = array_values(unpack('C*', $this->key));
$keyl = count($key);
// with bcrypt $keyl will always be 16 (because the key is the sha512 of the key you provide)
for ($j = 0, $i = 0; $i < 18; ++$i) {
// xor P1 with the first 32-bits of the key, xor P2 with the second 32-bits ...
for ($data = 0, $k = 0; $k < 4; ++$k) {
$data = ($data << 8) | $key[$j];
if (++$j >= $keyl) {
$j = 0;
}
}
$this->bctx['p'][] = $this->parray[$i] ^ intval($data);
}
// encrypt the zero-string, replace P1 and P2 with the encrypted data,
// encrypt P3 and P4 with the new P1 and P2, do it with all P-array and subkeys
$data = "\0\0\0\0\0\0\0\0";
for ($i = 0; $i < 18; $i += 2) {
list($l, $r) = array_values(unpack('N*', $data = $this->_encryptBlock($data)));
$this->bctx['p'][$i ] = $l;
$this->bctx['p'][$i + 1] = $r;
}
for ($i = 0; $i < 4; ++$i) {
for ($j = 0; $j < 256; $j += 2) {
list($l, $r) = array_values(unpack('N*', $data = $this->_encryptBlock($data)));
$this->bctx['sb'][$i][$j ] = $l;
$this->bctx['sb'][$i][$j + 1] = $r;
}
}
}
/**
* bcrypt
*
* @param string $sha2pass
* @param string $sha2salt
* @access private
* @return string
*/
function _bcrypt_hash($sha2pass, $sha2salt)
{
$p = $this->parray;
$sbox0 = $this->sbox0;
$sbox1 = $this->sbox1;
$sbox2 = $this->sbox2;
$sbox3 = $this->sbox3;
$cdata = array_values(unpack('N*', 'OxychromaticBlowfishSwatDynamite'));
$sha2pass = array_values(unpack('N*', $sha2pass));
$sha2salt = array_values(unpack('N*', $sha2salt));
$this->_expandstate($sha2salt, $sha2pass, $sbox0, $sbox1, $sbox2, $sbox3, $p);
for ($i = 0; $i < 64; $i++) {
$this->_expand0state($sha2salt, $sbox0, $sbox1, $sbox2, $sbox3, $p);
$this->_expand0state($sha2pass, $sbox0, $sbox1, $sbox2, $sbox3, $p);
}
for ($i = 0; $i < 64; $i++) {
for ($j = 0; $j < 8; $j+= 2) { // count($cdata) == 8
list($cdata[$j], $cdata[$j + 1]) = $this->_encryptBlockHelperFast($cdata[$j], $cdata[$j + 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
}
}
$output = '';
for ($i = 0; $i < count($cdata); $i++) {
$output.= pack('L*', $cdata[$i]);
}
return $output;
}
/**
* Performs OpenSSH-style bcrypt
*
* @param string $pass
* @param string $salt
* @param int $keylen
* @param int $rounds
* @access public
* @return false|string
*/
function bcrypt_pbkdf($pass, $salt, $keylen, $rounds)
{
if (PHP_INT_SIZE == 4) {
user_error('bcrypt is far too slow to be practical on 32-bit versions of PHP');
return false;
}
if (!isset($this->sha512)) {
$this->sha512 = new Hash('sha512');
}
$sha2pass = $this->sha512->hash($pass);
$results = array();
$count = 1;
while (32 * count($results) < $keylen) {
$countsalt = $salt . pack('N', $count++);
$sha2salt = $this->sha512->hash($countsalt);
$out = $tmpout = $this->_bcrypt_hash($sha2pass, $sha2salt);
for ($i = 1; $i < $rounds; $i++) {
$sha2salt = $this->sha512->hash($tmpout);
$tmpout = $this->_bcrypt_hash($sha2pass, $sha2salt);
$out^= $tmpout;
}
$results[] = $out;
}
$output = '';
for ($i = 0; $i < 32; $i++) {
foreach ($results as $result) {
$output.= $result[$i];
}
}
return substr($output, 0, $keylen);
}
/**
* Key expansion without salt
*
* @access private
* @param int[] $key
* @param int[] $sbox0
* @param int[] $sbox1
* @param int[] $sbox2
* @param int[] $sbox3
* @param int[] $p
* @see self::_bcrypt_hash()
*/
function _expand0state($key, &$sbox0, &$sbox1, &$sbox2, &$sbox3, &$p)
{
// expand0state is basically the same thing as this:
//return $this->_expandstate(array_fill(0, 16, 0), $key);
// but this separate function eliminates a bunch of XORs and array lookups
$p = array(
$p[0] ^ $key[0],
$p[1] ^ $key[1],
$p[2] ^ $key[2],
$p[3] ^ $key[3],
$p[4] ^ $key[4],
$p[5] ^ $key[5],
$p[6] ^ $key[6],
$p[7] ^ $key[7],
$p[8] ^ $key[8],
$p[9] ^ $key[9],
$p[10] ^ $key[10],
$p[11] ^ $key[11],
$p[12] ^ $key[12],
$p[13] ^ $key[13],
$p[14] ^ $key[14],
$p[15] ^ $key[15],
$p[16] ^ $key[0],
$p[17] ^ $key[1]
);
// @codingStandardsIgnoreStart
list( $p[0], $p[1]) = $this->_encryptBlockHelperFast( 0, 0, $sbox0, $sbox1, $sbox2, $sbox3, $p);
list( $p[2], $p[3]) = $this->_encryptBlockHelperFast($p[ 0], $p[ 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
list( $p[4], $p[5]) = $this->_encryptBlockHelperFast($p[ 2], $p[ 3], $sbox0, $sbox1, $sbox2, $sbox3, $p);
list( $p[6], $p[7]) = $this->_encryptBlockHelperFast($p[ 4], $p[ 5], $sbox0, $sbox1, $sbox2, $sbox3, $p);
list( $p[8], $p[9]) = $this->_encryptBlockHelperFast($p[ 6], $p[ 7], $sbox0, $sbox1, $sbox2, $sbox3, $p);
list($p[10], $p[11]) = $this->_encryptBlockHelperFast($p[ 8], $p[ 9], $sbox0, $sbox1, $sbox2, $sbox3, $p);
list($p[12], $p[13]) = $this->_encryptBlockHelperFast($p[10], $p[11], $sbox0, $sbox1, $sbox2, $sbox3, $p);
list($p[14], $p[15]) = $this->_encryptBlockHelperFast($p[12], $p[13], $sbox0, $sbox1, $sbox2, $sbox3, $p);
list($p[16], $p[17]) = $this->_encryptBlockHelperFast($p[14], $p[15], $sbox0, $sbox1, $sbox2, $sbox3, $p);
// @codingStandardsIgnoreEnd
list($sbox0[0], $sbox0[1]) = $this->_encryptBlockHelperFast($p[16], $p[17], $sbox0, $sbox1, $sbox2, $sbox3, $p);
for ($i = 2; $i < 256; $i+= 2) {
list($sbox0[$i], $sbox0[$i + 1]) = $this->_encryptBlockHelperFast($sbox0[$i - 2], $sbox0[$i - 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
}
list($sbox1[0], $sbox1[1]) = $this->_encryptBlockHelperFast($sbox0[254], $sbox0[255], $sbox0, $sbox1, $sbox2, $sbox3, $p);
for ($i = 2; $i < 256; $i+= 2) {
list($sbox1[$i], $sbox1[$i + 1]) = $this->_encryptBlockHelperFast($sbox1[$i - 2], $sbox1[$i - 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
}
list($sbox2[0], $sbox2[1]) = $this->_encryptBlockHelperFast($sbox1[254], $sbox1[255], $sbox0, $sbox1, $sbox2, $sbox3, $p);
for ($i = 2; $i < 256; $i+= 2) {
list($sbox2[$i], $sbox2[$i + 1]) = $this->_encryptBlockHelperFast($sbox2[$i - 2], $sbox2[$i - 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
}
list($sbox3[0], $sbox3[1]) = $this->_encryptBlockHelperFast($sbox2[254], $sbox2[255], $sbox0, $sbox1, $sbox2, $sbox3, $p);
for ($i = 2; $i < 256; $i+= 2) {
list($sbox3[$i], $sbox3[$i + 1]) = $this->_encryptBlockHelperFast($sbox3[$i - 2], $sbox3[$i - 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
}
}
/**
* Key expansion with salt
*
* @access private
* @param int[] $data
* @param int[] $key
* @param int[] $sbox0
* @param int[] $sbox1
* @param int[] $sbox2
* @param int[] $sbox3
* @param int[] $p
* @see self::_bcrypt_hash()
*/
function _expandstate($data, $key, &$sbox0, &$sbox1, &$sbox2, &$sbox3, &$p)
{
$p = array(
$p[0] ^ $key[0],
$p[1] ^ $key[1],
$p[2] ^ $key[2],
$p[3] ^ $key[3],
$p[4] ^ $key[4],
$p[5] ^ $key[5],
$p[6] ^ $key[6],
$p[7] ^ $key[7],
$p[8] ^ $key[8],
$p[9] ^ $key[9],
$p[10] ^ $key[10],
$p[11] ^ $key[11],
$p[12] ^ $key[12],
$p[13] ^ $key[13],
$p[14] ^ $key[14],
$p[15] ^ $key[15],
$p[16] ^ $key[0],
$p[17] ^ $key[1]
);
// @codingStandardsIgnoreStart
list( $p[0], $p[1]) = $this->_encryptBlockHelperFast($data[ 0] , $data[ 1] , $sbox0, $sbox1, $sbox2, $sbox3, $p);
list( $p[2], $p[3]) = $this->_encryptBlockHelperFast($data[ 2] ^ $p[ 0], $data[ 3] ^ $p[ 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
list( $p[4], $p[5]) = $this->_encryptBlockHelperFast($data[ 4] ^ $p[ 2], $data[ 5] ^ $p[ 3], $sbox0, $sbox1, $sbox2, $sbox3, $p);
list( $p[6], $p[7]) = $this->_encryptBlockHelperFast($data[ 6] ^ $p[ 4], $data[ 7] ^ $p[ 5], $sbox0, $sbox1, $sbox2, $sbox3, $p);
list( $p[8], $p[9]) = $this->_encryptBlockHelperFast($data[ 8] ^ $p[ 6], $data[ 9] ^ $p[ 7], $sbox0, $sbox1, $sbox2, $sbox3, $p);
list($p[10], $p[11]) = $this->_encryptBlockHelperFast($data[10] ^ $p[ 8], $data[11] ^ $p[ 9], $sbox0, $sbox1, $sbox2, $sbox3, $p);
list($p[12], $p[13]) = $this->_encryptBlockHelperFast($data[12] ^ $p[10], $data[13] ^ $p[11], $sbox0, $sbox1, $sbox2, $sbox3, $p);
list($p[14], $p[15]) = $this->_encryptBlockHelperFast($data[14] ^ $p[12], $data[15] ^ $p[13], $sbox0, $sbox1, $sbox2, $sbox3, $p);
list($p[16], $p[17]) = $this->_encryptBlockHelperFast($data[ 0] ^ $p[14], $data[ 1] ^ $p[15], $sbox0, $sbox1, $sbox2, $sbox3, $p);
// @codingStandardsIgnoreEnd
list($sbox0[0], $sbox0[1]) = $this->_encryptBlockHelperFast($data[2] ^ $p[16], $data[3] ^ $p[17], $sbox0, $sbox1, $sbox2, $sbox3, $p);
for ($i = 2, $j = 4; $i < 256; $i+= 2, $j = ($j + 2) % 16) { // instead of 16 maybe count($data) would be better?
list($sbox0[$i], $sbox0[$i + 1]) = $this->_encryptBlockHelperFast($data[$j] ^ $sbox0[$i - 2], $data[$j + 1] ^ $sbox0[$i - 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
}
list($sbox1[0], $sbox1[1]) = $this->_encryptBlockHelperFast($data[2] ^ $sbox0[254], $data[3] ^ $sbox0[255], $sbox0, $sbox1, $sbox2, $sbox3, $p);
for ($i = 2, $j = 4; $i < 256; $i+= 2, $j = ($j + 2) % 16) {
list($sbox1[$i], $sbox1[$i + 1]) = $this->_encryptBlockHelperFast($data[$j] ^ $sbox1[$i - 2], $data[$j + 1] ^ $sbox1[$i - 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
}
list($sbox2[0], $sbox2[1]) = $this->_encryptBlockHelperFast($data[2] ^ $sbox1[254], $data[3] ^ $sbox1[255], $sbox0, $sbox1, $sbox2, $sbox3, $p);
for ($i = 2, $j = 4; $i < 256; $i+= 2, $j = ($j + 2) % 16) {
list($sbox2[$i], $sbox2[$i + 1]) = $this->_encryptBlockHelperFast($data[$j] ^ $sbox2[$i - 2], $data[$j + 1] ^ $sbox2[$i - 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
}
list($sbox3[0], $sbox3[1]) = $this->_encryptBlockHelperFast($data[2] ^ $sbox2[254], $data[3] ^ $sbox2[255], $sbox0, $sbox1, $sbox2, $sbox3, $p);
for ($i = 2, $j = 4; $i < 256; $i+= 2, $j = ($j + 2) % 16) {
list($sbox3[$i], $sbox3[$i + 1]) = $this->_encryptBlockHelperFast($data[$j] ^ $sbox3[$i - 2], $data[$j + 1] ^ $sbox3[$i - 1], $sbox0, $sbox1, $sbox2, $sbox3, $p);
}
}
/**
* Encrypts a block
*
* @access private
* @param string $in
* @return string
*/
function _encryptBlock($in)
{
$p = $this->bctx["p"];
// extract($this->bctx["sb"], EXTR_PREFIX_ALL, "sb"); // slower
$sb_0 = $this->bctx["sb"][0];
$sb_1 = $this->bctx["sb"][1];
$sb_2 = $this->bctx["sb"][2];
$sb_3 = $this->bctx["sb"][3];
$in = unpack("N*", $in);
$l = $in[1];
$r = $in[2];
list($r, $l) = CRYPT_BASE_USE_REG_INTVAL ?
$this->_encryptBlockHelperFast($l, $r, $sb_0, $sb_1, $sb_2, $sb_3, $p) :
$this->_encryptBlockHelperSlow($l, $r, $sb_0, $sb_1, $sb_2, $sb_3, $p);
return pack("N*", $r, $l);
}
/**
* Fast helper function for block encryption
*
* @access private
* @param int $x0
* @param int $x1
* @param int[] $sbox0
* @param int[] $sbox1
* @param int[] $sbox2
* @param int[] $sbox3
* @param int[] $p
* @return int[]
*/
function _encryptBlockHelperFast($x0, $x1, $sbox0, $sbox1, $sbox2, $sbox3, $p)
{
$x0 ^= $p[0];
$x1 ^= ((($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[1];
$x0 ^= ((($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[2];
$x1 ^= ((($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[3];
$x0 ^= ((($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[4];
$x1 ^= ((($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[5];
$x0 ^= ((($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[6];
$x1 ^= ((($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[7];
$x0 ^= ((($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[8];
$x1 ^= ((($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[9];
$x0 ^= ((($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[10];
$x1 ^= ((($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[11];
$x0 ^= ((($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[12];
$x1 ^= ((($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[13];
$x0 ^= ((($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[14];
$x1 ^= ((($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[15];
$x0 ^= ((($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[16];
return array($x1 & 0xFFFFFFFF ^ $p[17], $x0 & 0xFFFFFFFF);
}
/**
* Slow helper function for block encryption
*
* @access private
* @param int $x0
* @param int $x1
* @param int[] $sbox0
* @param int[] $sbox1
* @param int[] $sbox2
* @param int[] $sbox3
* @param int[] $p
* @return int[]
*/
function _encryptBlockHelperSlow($x0, $x1, $sbox0, $sbox1, $sbox2, $sbox3, $p)
{
$x0^= $p[0];
$x1^= $this->safe_intval(($this->safe_intval($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[1];
$x0^= $this->safe_intval(($this->safe_intval($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[2];
$x1^= $this->safe_intval(($this->safe_intval($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[3];
$x0^= $this->safe_intval(($this->safe_intval($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[4];
$x1^= $this->safe_intval(($this->safe_intval($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[5];
$x0^= $this->safe_intval(($this->safe_intval($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[6];
$x1^= $this->safe_intval(($this->safe_intval($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[7];
$x0^= $this->safe_intval(($this->safe_intval($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[8];
$x1^= $this->safe_intval(($this->safe_intval($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[9];
$x0^= $this->safe_intval(($this->safe_intval($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[10];
$x1^= $this->safe_intval(($this->safe_intval($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[11];
$x0^= $this->safe_intval(($this->safe_intval($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[12];
$x1^= $this->safe_intval(($this->safe_intval($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[13];
$x0^= $this->safe_intval(($this->safe_intval($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[14];
$x1^= $this->safe_intval(($this->safe_intval($sbox0[($x0 & 0xFF000000) >> 24] + $sbox1[($x0 & 0xFF0000) >> 16]) ^ $sbox2[($x0 & 0xFF00) >> 8]) + $sbox3[$x0 & 0xFF]) ^ $p[15];
$x0^= $this->safe_intval(($this->safe_intval($sbox0[($x1 & 0xFF000000) >> 24] + $sbox1[($x1 & 0xFF0000) >> 16]) ^ $sbox2[($x1 & 0xFF00) >> 8]) + $sbox3[$x1 & 0xFF]) ^ $p[16];
return array($x1 & 0xFFFFFFFF ^ $p[17], $x0 & 0xFFFFFFFF);
}
/**
* Decrypts a block
*
* @access private
* @param string $in
* @return string
*/
function _decryptBlock($in)
{
$p = $this->bctx["p"];
$sb_0 = $this->bctx["sb"][0];
$sb_1 = $this->bctx["sb"][1];
$sb_2 = $this->bctx["sb"][2];
$sb_3 = $this->bctx["sb"][3];
$in = unpack("N*", $in);
$l = $in[1];
$r = $in[2];
for ($i = 17; $i > 2; $i-= 2) {
$l^= $p[$i];
$r^= $this->safe_intval(($this->safe_intval($sb_0[$l >> 24 & 0xff] + $sb_1[$l >> 16 & 0xff]) ^
$sb_2[$l >> 8 & 0xff]) +
$sb_3[$l & 0xff]);
$r^= $p[$i - 1];
$l^= $this->safe_intval(($this->safe_intval($sb_0[$r >> 24 & 0xff] + $sb_1[$r >> 16 & 0xff]) ^
$sb_2[$r >> 8 & 0xff]) +
$sb_3[$r & 0xff]);
}
return pack("N*", $r ^ $p[0], $l ^ $p[1]);
}
/**
* Setup the performance-optimized function for de/encrypt()
*
* @see \phpseclib\Crypt\Base::_setupInlineCrypt()
* @access private
*/
function _setupInlineCrypt()
{
$lambda_functions =& self::_getLambdaFunctions();
// We create max. 10 hi-optimized code for memory reason. Means: For each $key one ultra fast inline-crypt function.
// (Currently, for Blowfish, one generated $lambda_function cost on php5.5@32bit ~100kb unfreeable mem and ~180kb on php5.5@64bit)
// After that, we'll still create very fast optimized code but not the hi-ultimative code, for each $mode one.
$gen_hi_opt_code = (bool)(count($lambda_functions) < 10);
// Generation of a unique hash for our generated code
$code_hash = "Crypt_Blowfish, {$this->mode}";
if ($gen_hi_opt_code) {
$code_hash = str_pad($code_hash, 32) . $this->_hashInlineCryptFunction($this->key);
}
$safeint = $this->safe_intval_inline();
if (!isset($lambda_functions[$code_hash])) {
switch (true) {
case $gen_hi_opt_code:
$p = $this->bctx['p'];
$init_crypt = '
static $sb_0, $sb_1, $sb_2, $sb_3;
if (!$sb_0) {
$sb_0 = $self->bctx["sb"][0];
$sb_1 = $self->bctx["sb"][1];
$sb_2 = $self->bctx["sb"][2];
$sb_3 = $self->bctx["sb"][3];
}
';
break;
default:
$p = array();
for ($i = 0; $i < 18; ++$i) {
$p[] = '$p_' . $i;
}
$init_crypt = '
list($sb_0, $sb_1, $sb_2, $sb_3) = $self->bctx["sb"];
list(' . implode(',', $p) . ') = $self->bctx["p"];
';
}
// Generating encrypt code:
$encrypt_block = '
$in = unpack("N*", $in);
$l = $in[1];
$r = $in[2];
';
for ($i = 0; $i < 16; $i+= 2) {
$encrypt_block.= '
$l^= ' . $p[$i] . ';
$r^= ' . sprintf($safeint, '(' . sprintf($safeint, '$sb_0[$l >> 24 & 0xff] + $sb_1[$l >> 16 & 0xff]') . ' ^
$sb_2[$l >> 8 & 0xff]) +
$sb_3[$l & 0xff]') . ';
$r^= ' . $p[$i + 1] . ';
$l^= ' . sprintf($safeint, '(' . sprintf($safeint, '$sb_0[$r >> 24 & 0xff] + $sb_1[$r >> 16 & 0xff]') . ' ^
$sb_2[$r >> 8 & 0xff]) +
$sb_3[$r & 0xff]') . ';
';
}
$encrypt_block.= '
$in = pack("N*",
$r ^ ' . $p[17] . ',
$l ^ ' . $p[16] . '
);
';
// Generating decrypt code:
$decrypt_block = '
$in = unpack("N*", $in);
$l = $in[1];
$r = $in[2];
';
for ($i = 17; $i > 2; $i-= 2) {
$decrypt_block.= '
$l^= ' . $p[$i] . ';
$r^= ' . sprintf($safeint, '(' . sprintf($safeint, '$sb_0[$l >> 24 & 0xff] + $sb_1[$l >> 16 & 0xff]') . ' ^
$sb_2[$l >> 8 & 0xff]) +
$sb_3[$l & 0xff]') . ';
$r^= ' . $p[$i - 1] . ';
$l^= ' . sprintf($safeint, '(' . sprintf($safeint, '$sb_0[$r >> 24 & 0xff] + $sb_1[$r >> 16 & 0xff]') . ' ^
$sb_2[$r >> 8 & 0xff]) +
$sb_3[$r & 0xff]') . ';
';
}
$decrypt_block.= '
$in = pack("N*",
$r ^ ' . $p[0] . ',
$l ^ ' . $p[1] . '
);
';
$lambda_functions[$code_hash] = $this->_createInlineCryptFunction(
array(
'init_crypt' => $init_crypt,
'init_encrypt' => '',
'init_decrypt' => '',
'encrypt_block' => $encrypt_block,
'decrypt_block' => $decrypt_block
)
);
}
$this->inline_crypt = $lambda_functions[$code_hash];
}
}
PK ��$Z�鞏, , ! phpseclib/phpseclib/bootstrap.phpnu �[��� <?php
/**
* Bootstrapping File for phpseclib
*
* @license http://www.opensource.org/licenses/mit-license.html MIT License
*/
if (extension_loaded('mbstring')) {
// 2 - MB_OVERLOAD_STRING
// mbstring.func_overload is deprecated in php 7.2 and removed in php 8.0.
if (version_compare(PHP_VERSION, '8.0.0') < 0 && ini_get('mbstring.func_overload') & 2) {
throw new \UnexpectedValueException(
'Overloading of string functions using mbstring.func_overload ' .
'is not supported by phpseclib.'
);
}
}
PK ��$Z�P�;^ ^ 1 phpseclib/phpseclib/System/SSH/Agent/Identity.phpnu �[��� <?php
/**
* Pure-PHP ssh-agent client.
*
* PHP version 5
*
* @category System
* @package SSH\Agent
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2009 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
* @internal See http://api.libssh.org/rfc/PROTOCOL.agent
*/
namespace phpseclib\System\SSH\Agent;
use phpseclib\System\SSH\Agent;
/**
* Pure-PHP ssh-agent client identity object
*
* Instantiation should only be performed by \phpseclib\System\SSH\Agent class.
* This could be thought of as implementing an interface that phpseclib\Crypt\RSA
* implements. ie. maybe a Net_SSH_Auth_PublicKey interface or something.
* The methods in this interface would be getPublicKey and sign since those are the
* methods phpseclib looks for to perform public key authentication.
*
* @package SSH\Agent
* @author Jim Wigginton <terrafrost@php.net>
* @access internal
*/
class Identity
{
/**@+
* Signature Flags
*
* See https://tools.ietf.org/html/draft-miller-ssh-agent-00#section-5.3
*
* @access private
*/
const SSH_AGENT_RSA2_256 = 2;
const SSH_AGENT_RSA2_512 = 4;
/**#@-*/
/**
* Key Object
*
* @var \phpseclib\Crypt\RSA
* @access private
* @see self::getPublicKey()
*/
var $key;
/**
* Key Blob
*
* @var string
* @access private
* @see self::sign()
*/
var $key_blob;
/**
* Socket Resource
*
* @var resource
* @access private
* @see self::sign()
*/
var $fsock;
/**
* Signature flags
*
* @var int
* @access private
* @see self::sign()
* @see self::setHash()
*/
var $flags = 0;
/**
* Default Constructor.
*
* @param resource $fsock
* @return \phpseclib\System\SSH\Agent\Identity
* @access private
*/
function __construct($fsock)
{
$this->fsock = $fsock;
}
/**
* Set Public Key
*
* Called by \phpseclib\System\SSH\Agent::requestIdentities()
*
* @param \phpseclib\Crypt\RSA $key
* @access private
*/
function setPublicKey($key)
{
$this->key = $key;
$this->key->setPublicKey();
}
/**
* Set Public Key
*
* Called by \phpseclib\System\SSH\Agent::requestIdentities(). The key blob could be extracted from $this->key
* but this saves a small amount of computation.
*
* @param string $key_blob
* @access private
*/
function setPublicKeyBlob($key_blob)
{
$this->key_blob = $key_blob;
}
/**
* Get Public Key
*
* Wrapper for $this->key->getPublicKey()
*
* @param int $format optional
* @return mixed
* @access public
*/
function getPublicKey($format = null)
{
return !isset($format) ? $this->key->getPublicKey() : $this->key->getPublicKey($format);
}
/**
* Set Signature Mode
*
* Doesn't do anything as ssh-agent doesn't let you pick and choose the signature mode. ie.
* ssh-agent's only supported mode is \phpseclib\Crypt\RSA::SIGNATURE_PKCS1
*
* @param int $mode
* @access public
*/
function setSignatureMode($mode)
{
}
/**
* Set Hash
*
* ssh-agent doesn't support using hashes for RSA other than SHA1
*
* @param string $hash
* @access public
*/
function setHash($hash)
{
$this->flags = 0;
switch ($hash) {
case 'sha1':
break;
case 'sha256':
$this->flags = self::SSH_AGENT_RSA2_256;
break;
case 'sha512':
$this->flags = self::SSH_AGENT_RSA2_512;
break;
default:
user_error('The only supported hashes for RSA are sha1, sha256 and sha512');
}
}
/**
* Create a signature
*
* See "2.6.2 Protocol 2 private key signature request"
*
* @param string $message
* @return string
* @access public
*/
function sign($message)
{
// the last parameter (currently 0) is for flags and ssh-agent only defines one flag (for ssh-dss): SSH_AGENT_OLD_SIGNATURE
$packet = pack('CNa*Na*N', Agent::SSH_AGENTC_SIGN_REQUEST, strlen($this->key_blob), $this->key_blob, strlen($message), $message, $this->flags);
$packet = pack('Na*', strlen($packet), $packet);
if (strlen($packet) != fputs($this->fsock, $packet)) {
user_error('Connection closed during signing');
return false;
}
$temp = fread($this->fsock, 4);
if (strlen($temp) != 4) {
user_error('Connection closed during signing');
return false;
}
$length = current(unpack('N', $temp));
$type = ord(fread($this->fsock, 1));
if ($type != Agent::SSH_AGENT_SIGN_RESPONSE) {
user_error('Unable to retrieve signature');
return false;
}
$signature_blob = fread($this->fsock, $length - 1);
if (strlen($signature_blob) != $length - 1) {
user_error('Connection closed during signing');
return false;
}
$length = current(unpack('N', $this->_string_shift($signature_blob, 4)));
if ($length != strlen($signature_blob)) {
user_error('Malformed signature blob');
}
$length = current(unpack('N', $this->_string_shift($signature_blob, 4)));
if ($length > strlen($signature_blob) + 4) {
user_error('Malformed signature blob');
}
$type = $this->_string_shift($signature_blob, $length);
$this->_string_shift($signature_blob, 4);
return $signature_blob;
}
/**
* String Shift
*
* Inspired by array_shift
*
* @param string $string
* @param int $index
* @return string
* @access private
*/
function _string_shift(&$string, $index = 1)
{
$substr = substr($string, 0, $index);
$string = substr($string, $index);
return $substr;
}
}
PK ��$Z �az�' �' ( phpseclib/phpseclib/System/SSH/Agent.phpnu �[��� <?php
/**
* Pure-PHP ssh-agent client.
*
* PHP version 5
*
* Here are some examples of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $agent = new \phpseclib\System\SSH\Agent();
*
* $ssh = new \phpseclib\Net\SSH2('www.domain.tld');
* if (!$ssh->login('username', $agent)) {
* exit('Login Failed');
* }
*
* echo $ssh->exec('pwd');
* echo $ssh->exec('ls -la');
* ?>
* </code>
*
* @category System
* @package SSH\Agent
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2014 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
* @internal See http://api.libssh.org/rfc/PROTOCOL.agent
*/
namespace phpseclib\System\SSH;
use phpseclib\Crypt\RSA;
use phpseclib\System\SSH\Agent\Identity;
/**
* Pure-PHP ssh-agent client identity factory
*
* requestIdentities() method pumps out \phpseclib\System\SSH\Agent\Identity objects
*
* @package SSH\Agent
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class Agent
{
/**#@+
* Message numbers
*
* @access private
*/
// to request SSH1 keys you have to use SSH_AGENTC_REQUEST_RSA_IDENTITIES (1)
const SSH_AGENTC_REQUEST_IDENTITIES = 11;
// this is the SSH2 response; the SSH1 response is SSH_AGENT_RSA_IDENTITIES_ANSWER (2).
const SSH_AGENT_IDENTITIES_ANSWER = 12;
// the SSH1 request is SSH_AGENTC_RSA_CHALLENGE (3)
const SSH_AGENTC_SIGN_REQUEST = 13;
// the SSH1 response is SSH_AGENT_RSA_RESPONSE (4)
const SSH_AGENT_SIGN_RESPONSE = 14;
/**#@-*/
/**@+
* Agent forwarding status
*
* @access private
*/
// no forwarding requested and not active
const FORWARD_NONE = 0;
// request agent forwarding when opportune
const FORWARD_REQUEST = 1;
// forwarding has been request and is active
const FORWARD_ACTIVE = 2;
/**#@-*/
/**
* Unused
*/
const SSH_AGENT_FAILURE = 5;
/**
* Socket Resource
*
* @var resource
* @access private
*/
var $fsock;
/**
* Agent forwarding status
*
* @access private
*/
var $forward_status = self::FORWARD_NONE;
/**
* Buffer for accumulating forwarded authentication
* agent data arriving on SSH data channel destined
* for agent unix socket
*
* @access private
*/
var $socket_buffer = '';
/**
* Tracking the number of bytes we are expecting
* to arrive for the agent socket on the SSH data
* channel
*/
var $expected_bytes = 0;
/**
* Default Constructor
*
* @return \phpseclib\System\SSH\Agent
* @access public
*/
function __construct($address = null)
{
if (!$address) {
switch (true) {
case isset($_SERVER['SSH_AUTH_SOCK']):
$address = $_SERVER['SSH_AUTH_SOCK'];
break;
case isset($_ENV['SSH_AUTH_SOCK']):
$address = $_ENV['SSH_AUTH_SOCK'];
break;
default:
user_error('SSH_AUTH_SOCK not found');
return false;
}
}
$this->fsock = fsockopen('unix://' . $address, 0, $errno, $errstr);
if (!$this->fsock) {
user_error("Unable to connect to ssh-agent (Error $errno: $errstr)");
}
}
/**
* Request Identities
*
* See "2.5.2 Requesting a list of protocol 2 keys"
* Returns an array containing zero or more \phpseclib\System\SSH\Agent\Identity objects
*
* @return array
* @access public
*/
function requestIdentities()
{
if (!$this->fsock) {
return array();
}
$packet = pack('NC', 1, self::SSH_AGENTC_REQUEST_IDENTITIES);
if (strlen($packet) != fputs($this->fsock, $packet)) {
user_error('Connection closed while requesting identities');
return array();
}
$temp = fread($this->fsock, 4);
if (strlen($temp) != 4) {
user_error('Connection closed while requesting identities');
return array();
}
$length = current(unpack('N', $temp));
$type = ord(fread($this->fsock, 1));
if ($type != self::SSH_AGENT_IDENTITIES_ANSWER) {
user_error('Unable to request identities');
return array();
}
$identities = array();
$temp = fread($this->fsock, 4);
if (strlen($temp) != 4) {
user_error('Connection closed while requesting identities');
return array();
}
$keyCount = current(unpack('N', $temp));
for ($i = 0; $i < $keyCount; $i++) {
$temp = fread($this->fsock, 4);
if (strlen($temp) != 4) {
user_error('Connection closed while requesting identities');
return array();
}
$length = current(unpack('N', $temp));
$key_blob = fread($this->fsock, $length);
if (strlen($key_blob) != $length) {
user_error('Connection closed while requesting identities');
return array();
}
$key_str = 'ssh-rsa ' . base64_encode($key_blob);
$temp = fread($this->fsock, 4);
if (strlen($temp) != 4) {
user_error('Connection closed while requesting identities');
return array();
}
$length = current(unpack('N', $temp));
if ($length) {
$temp = fread($this->fsock, $length);
if (strlen($temp) != $length) {
user_error('Connection closed while requesting identities');
return array();
}
$key_str.= ' ' . $temp;
}
$length = current(unpack('N', substr($key_blob, 0, 4)));
$key_type = substr($key_blob, 4, $length);
switch ($key_type) {
case 'ssh-rsa':
$key = new RSA();
$key->loadKey($key_str);
break;
case 'ssh-dss':
// not currently supported
break;
}
// resources are passed by reference by default
if (isset($key)) {
$identity = new Identity($this->fsock);
$identity->setPublicKey($key);
$identity->setPublicKeyBlob($key_blob);
$identities[] = $identity;
unset($key);
}
}
return $identities;
}
/**
* Signal that agent forwarding should
* be requested when a channel is opened
*
* @return bool
* @access public
*/
function startSSHForwarding()
{
if ($this->forward_status == self::FORWARD_NONE) {
$this->forward_status = self::FORWARD_REQUEST;
}
}
/**
* Request agent forwarding of remote server
*
* @param Net_SSH2 $ssh
* @return bool
* @access private
*/
function _request_forwarding($ssh)
{
$request_channel = $ssh->_get_open_channel();
if ($request_channel === false) {
return false;
}
$packet = pack(
'CNNa*C',
NET_SSH2_MSG_CHANNEL_REQUEST,
$ssh->server_channels[$request_channel],
strlen('auth-agent-req@openssh.com'),
'auth-agent-req@openssh.com',
1
);
$ssh->channel_status[$request_channel] = NET_SSH2_MSG_CHANNEL_REQUEST;
if (!$ssh->_send_binary_packet($packet)) {
return false;
}
$response = $ssh->_get_channel_packet($request_channel);
if ($response === false) {
return false;
}
$ssh->channel_status[$request_channel] = NET_SSH2_MSG_CHANNEL_OPEN;
$this->forward_status = self::FORWARD_ACTIVE;
return true;
}
/**
* On successful channel open
*
* This method is called upon successful channel
* open to give the SSH Agent an opportunity
* to take further action. i.e. request agent forwarding
*
* @param Net_SSH2 $ssh
* @access private
*/
function _on_channel_open($ssh)
{
if ($this->forward_status == self::FORWARD_REQUEST) {
$this->_request_forwarding($ssh);
}
}
/**
* Forward data to SSH Agent and return data reply
*
* @param string $data
* @return data from SSH Agent
* @access private
*/
function _forward_data($data)
{
if ($this->expected_bytes > 0) {
$this->socket_buffer.= $data;
$this->expected_bytes -= strlen($data);
} else {
$agent_data_bytes = current(unpack('N', $data));
$current_data_bytes = strlen($data);
$this->socket_buffer = $data;
if ($current_data_bytes != $agent_data_bytes + 4) {
$this->expected_bytes = ($agent_data_bytes + 4) - $current_data_bytes;
return false;
}
}
if (strlen($this->socket_buffer) != fwrite($this->fsock, $this->socket_buffer)) {
user_error('Connection closed attempting to forward data to SSH agent');
return false;
}
$this->socket_buffer = '';
$this->expected_bytes = 0;
$temp = fread($this->fsock, 4);
if (strlen($temp) != 4) {
user_error('Connection closed while reading data response');
return false;
}
$agent_reply_bytes = current(unpack('N', $temp));
$agent_reply_data = fread($this->fsock, $agent_reply_bytes);
if (strlen($agent_reply_data) != $agent_reply_bytes) {
user_error('Connection closed while reading data response');
return false;
}
$agent_reply_data = current(unpack('a*', $agent_reply_data));
return pack('Na*', $agent_reply_bytes, $agent_reply_data);
}
}
PK ��$Z��\ ]� ]� ' phpseclib/phpseclib/Math/BigInteger.phpnu �[��� <?php
/**
* Pure-PHP arbitrary precision integer arithmetic library.
*
* Supports base-2, base-10, base-16, and base-256 numbers. Uses the GMP or BCMath extensions, if available,
* and an internal implementation, otherwise.
*
* PHP version 5
*
* {@internal (all DocBlock comments regarding implementation - such as the one that follows - refer to the
* {@link self::MODE_INTERNAL self::MODE_INTERNAL} mode)
*
* BigInteger uses base-2**26 to perform operations such as multiplication and division and
* base-2**52 (ie. two base 2**26 digits) to perform addition and subtraction. Because the largest possible
* value when multiplying two base-2**26 numbers together is a base-2**52 number, double precision floating
* point numbers - numbers that should be supported on most hardware and whose significand is 53 bits - are
* used. As a consequence, bitwise operators such as >> and << cannot be used, nor can the modulo operator %,
* which only supports integers. Although this fact will slow this library down, the fact that such a high
* base is being used should more than compensate.
*
* Numbers are stored in {@link http://en.wikipedia.org/wiki/Endianness little endian} format. ie.
* (new \phpseclib\Math\BigInteger(pow(2, 26)))->value = array(0, 1)
*
* Useful resources are as follows:
*
* - {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf Handbook of Applied Cryptography (HAC)}
* - {@link http://math.libtomcrypt.com/files/tommath.pdf Multi-Precision Math (MPM)}
* - Java's BigInteger classes. See /j2se/src/share/classes/java/math in jdk-1_5_0-src-jrl.zip
*
* Here's an example of how to use this library:
* <code>
* <?php
* $a = new \phpseclib\Math\BigInteger(2);
* $b = new \phpseclib\Math\BigInteger(3);
*
* $c = $a->add($b);
*
* echo $c->toString(); // outputs 5
* ?>
* </code>
*
* @category Math
* @package BigInteger
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2006 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
*/
namespace phpseclib\Math;
use phpseclib\Crypt\Random;
/**
* Pure-PHP arbitrary precision integer arithmetic library. Supports base-2, base-10, base-16, and base-256
* numbers.
*
* @package BigInteger
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class BigInteger
{
/**#@+
* Reduction constants
*
* @access private
* @see BigInteger::_reduce()
*/
/**
* @see BigInteger::_montgomery()
* @see BigInteger::_prepMontgomery()
*/
const MONTGOMERY = 0;
/**
* @see BigInteger::_barrett()
*/
const BARRETT = 1;
/**
* @see BigInteger::_mod2()
*/
const POWEROF2 = 2;
/**
* @see BigInteger::_remainder()
*/
const CLASSIC = 3;
/**
* @see BigInteger::__clone()
*/
const NONE = 4;
/**#@-*/
/**#@+
* Array constants
*
* Rather than create a thousands and thousands of new BigInteger objects in repeated function calls to add() and
* multiply() or whatever, we'll just work directly on arrays, taking them in as parameters and returning them.
*
* @access private
*/
/**
* $result[self::VALUE] contains the value.
*/
const VALUE = 0;
/**
* $result[self::SIGN] contains the sign.
*/
const SIGN = 1;
/**#@-*/
/**#@+
* @access private
* @see BigInteger::_montgomery()
* @see BigInteger::_barrett()
*/
/**
* Cache constants
*
* $cache[self::VARIABLE] tells us whether or not the cached data is still valid.
*/
const VARIABLE = 0;
/**
* $cache[self::DATA] contains the cached data.
*/
const DATA = 1;
/**#@-*/
/**#@+
* Mode constants.
*
* @access private
* @see BigInteger::__construct()
*/
/**
* To use the pure-PHP implementation
*/
const MODE_INTERNAL = 1;
/**
* To use the BCMath library
*
* (if enabled; otherwise, the internal implementation will be used)
*/
const MODE_BCMATH = 2;
/**
* To use the GMP library
*
* (if present; otherwise, either the BCMath or the internal implementation will be used)
*/
const MODE_GMP = 3;
/**#@-*/
/**
* Karatsuba Cutoff
*
* At what point do we switch between Karatsuba multiplication and schoolbook long multiplication?
*
* @access private
*/
const KARATSUBA_CUTOFF = 25;
/**#@+
* Static properties used by the pure-PHP implementation.
*
* @see __construct()
*/
protected static $base;
protected static $baseFull;
protected static $maxDigit;
protected static $msb;
/**
* $max10 in greatest $max10Len satisfying
* $max10 = 10**$max10Len <= 2**$base.
*/
protected static $max10;
/**
* $max10Len in greatest $max10Len satisfying
* $max10 = 10**$max10Len <= 2**$base.
*/
protected static $max10Len;
protected static $maxDigit2;
/**#@-*/
/**
* Holds the BigInteger's value.
*
* @var array
* @access private
*/
var $value;
/**
* Holds the BigInteger's magnitude.
*
* @var bool
* @access private
*/
var $is_negative = false;
/**
* Precision
*
* @see self::setPrecision()
* @access private
*/
var $precision = -1;
/**
* Precision Bitmask
*
* @see self::setPrecision()
* @access private
*/
var $bitmask = false;
/**
* Mode independent value used for serialization.
*
* If the bcmath or gmp extensions are installed $this->value will be a non-serializable resource, hence the need for
* a variable that'll be serializable regardless of whether or not extensions are being used. Unlike $this->value,
* however, $this->hex is only calculated when $this->__sleep() is called.
*
* @see self::__sleep()
* @see self::__wakeup()
* @var string
* @access private
*/
var $hex;
/**
* Converts base-2, base-10, base-16, and binary strings (base-256) to BigIntegers.
*
* If the second parameter - $base - is negative, then it will be assumed that the number's are encoded using
* two's compliment. The sole exception to this is -10, which is treated the same as 10 is.
*
* Here's an example:
* <code>
* <?php
* $a = new \phpseclib\Math\BigInteger('0x32', 16); // 50 in base-16
*
* echo $a->toString(); // outputs 50
* ?>
* </code>
*
* @param int|string|resource $x base-10 number or base-$base number if $base set.
* @param int $base
* @return \phpseclib\Math\BigInteger
* @access public
*/
function __construct($x = 0, $base = 10)
{
if (!defined('MATH_BIGINTEGER_MODE')) {
switch (true) {
case extension_loaded('gmp'):
define('MATH_BIGINTEGER_MODE', self::MODE_GMP);
break;
case extension_loaded('bcmath'):
define('MATH_BIGINTEGER_MODE', self::MODE_BCMATH);
break;
default:
define('MATH_BIGINTEGER_MODE', self::MODE_INTERNAL);
}
}
if (extension_loaded('openssl') && !defined('MATH_BIGINTEGER_OPENSSL_DISABLE') && !defined('MATH_BIGINTEGER_OPENSSL_ENABLED')) {
// some versions of XAMPP have mismatched versions of OpenSSL which causes it not to work
$versions = array();
// avoid generating errors (even with suppression) when phpinfo() is disabled (common in production systems)
if (function_exists('phpinfo')) {
ob_start();
@phpinfo();
$content = ob_get_contents();
ob_end_clean();
preg_match_all('#OpenSSL (Header|Library) Version(.*)#im', $content, $matches);
if (!empty($matches[1])) {
for ($i = 0; $i < count($matches[1]); $i++) {
$fullVersion = trim(str_replace('=>', '', strip_tags($matches[2][$i])));
// Remove letter part in OpenSSL version
if (!preg_match('/(\d+\.\d+\.\d+)/i', $fullVersion, $m)) {
$versions[$matches[1][$i]] = $fullVersion;
} else {
$versions[$matches[1][$i]] = $m[0];
}
}
}
}
// it doesn't appear that OpenSSL versions were reported upon until PHP 5.3+
switch (true) {
case !isset($versions['Header']):
case !isset($versions['Library']):
case $versions['Header'] == $versions['Library']:
case version_compare($versions['Header'], '1.0.0') >= 0 && version_compare($versions['Library'], '1.0.0') >= 0:
define('MATH_BIGINTEGER_OPENSSL_ENABLED', true);
break;
default:
define('MATH_BIGINTEGER_OPENSSL_DISABLE', true);
}
}
if (!defined('PHP_INT_SIZE')) {
define('PHP_INT_SIZE', 4);
}
if (empty(self::$base) && MATH_BIGINTEGER_MODE == self::MODE_INTERNAL) {
switch (PHP_INT_SIZE) {
case 8: // use 64-bit integers if int size is 8 bytes
self::$base = 31;
self::$baseFull = 0x80000000;
self::$maxDigit = 0x7FFFFFFF;
self::$msb = 0x40000000;
self::$max10 = 1000000000;
self::$max10Len = 9;
self::$maxDigit2 = pow(2, 62);
break;
//case 4: // use 64-bit floats if int size is 4 bytes
default:
self::$base = 26;
self::$baseFull = 0x4000000;
self::$maxDigit = 0x3FFFFFF;
self::$msb = 0x2000000;
self::$max10 = 10000000;
self::$max10Len = 7;
self::$maxDigit2 = pow(2, 52); // pow() prevents truncation
}
}
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
switch (true) {
case is_resource($x) && get_resource_type($x) == 'GMP integer':
// PHP 5.6 switched GMP from using resources to objects
case $x instanceof \GMP:
$this->value = $x;
return;
}
$this->value = gmp_init(0);
break;
case self::MODE_BCMATH:
$this->value = '0';
break;
default:
$this->value = array();
}
// '0' counts as empty() but when the base is 256 '0' is equal to ord('0') or 48
// '0' is the only value like this per http://php.net/empty
if (empty($x) && (abs($base) != 256 || $x !== '0')) {
return;
}
switch ($base) {
case -256:
if (ord($x[0]) & 0x80) {
$x = ~$x;
$this->is_negative = true;
}
case 256:
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
$this->value = function_exists('gmp_import') ?
gmp_import($x) :
gmp_init('0x' . bin2hex($x));
if ($this->is_negative) {
$this->value = gmp_neg($this->value);
}
break;
case self::MODE_BCMATH:
// round $len to the nearest 4 (thanks, DavidMJ!)
$len = (strlen($x) + 3) & ~3;
$x = str_pad($x, $len, chr(0), STR_PAD_LEFT);
for ($i = 0; $i < $len; $i+= 4) {
$this->value = bcmul($this->value, '4294967296', 0); // 4294967296 == 2**32
$this->value = bcadd($this->value, 0x1000000 * ord($x[$i]) + ((ord($x[$i + 1]) << 16) | (ord($x[$i + 2]) << 8) | ord($x[$i + 3])), 0);
}
if ($this->is_negative) {
$this->value = '-' . $this->value;
}
break;
// converts a base-2**8 (big endian / msb) number to base-2**26 (little endian / lsb)
default:
while (strlen($x)) {
$this->value[] = $this->_bytes2int($this->_base256_rshift($x, self::$base));
}
}
if ($this->is_negative) {
if (MATH_BIGINTEGER_MODE != self::MODE_INTERNAL) {
$this->is_negative = false;
}
$temp = $this->add(new static('-1'));
$this->value = $temp->value;
}
break;
case 16:
case -16:
if ($base > 0 && $x[0] == '-') {
$this->is_negative = true;
$x = substr($x, 1);
}
$x = preg_replace('#^(?:0x)?([A-Fa-f0-9]*).*#', '$1', $x);
$is_negative = false;
if ($base < 0 && hexdec($x[0]) >= 8) {
$this->is_negative = $is_negative = true;
$x = bin2hex(~pack('H*', $x));
}
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
$temp = $this->is_negative ? '-0x' . $x : '0x' . $x;
$this->value = gmp_init($temp);
$this->is_negative = false;
break;
case self::MODE_BCMATH:
$x = (strlen($x) & 1) ? '0' . $x : $x;
$temp = new static(pack('H*', $x), 256);
$this->value = $this->is_negative ? '-' . $temp->value : $temp->value;
$this->is_negative = false;
break;
default:
$x = (strlen($x) & 1) ? '0' . $x : $x;
$temp = new static(pack('H*', $x), 256);
$this->value = $temp->value;
}
if ($is_negative) {
$temp = $this->add(new static('-1'));
$this->value = $temp->value;
}
break;
case 10:
case -10:
// (?<!^)(?:-).*: find any -'s that aren't at the beginning and then any characters that follow that
// (?<=^|-)0*: find any 0's that are preceded by the start of the string or by a - (ie. octals)
// [^-0-9].*: find any non-numeric characters and then any characters that follow that
$x = preg_replace('#(?<!^)(?:-).*|(?<=^|-)0*|[^-0-9].*#', '', $x);
if (!strlen($x) || $x == '-') {
$x = '0';
}
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
$this->value = gmp_init($x);
break;
case self::MODE_BCMATH:
// explicitly casting $x to a string is necessary, here, since doing $x[0] on -1 yields different
// results then doing it on '-1' does (modInverse does $x[0])
$this->value = $x === '-' ? '0' : (string) $x;
break;
default:
$temp = new static();
$multiplier = new static();
$multiplier->value = array(self::$max10);
if ($x[0] == '-') {
$this->is_negative = true;
$x = substr($x, 1);
}
$x = str_pad($x, strlen($x) + ((self::$max10Len - 1) * strlen($x)) % self::$max10Len, 0, STR_PAD_LEFT);
while (strlen($x)) {
$temp = $temp->multiply($multiplier);
$temp = $temp->add(new static($this->_int2bytes(substr($x, 0, self::$max10Len)), 256));
$x = substr($x, self::$max10Len);
}
$this->value = $temp->value;
}
break;
case 2: // base-2 support originally implemented by Lluis Pamies - thanks!
case -2:
if ($base > 0 && $x[0] == '-') {
$this->is_negative = true;
$x = substr($x, 1);
}
$x = preg_replace('#^([01]*).*#', '$1', $x);
$x = str_pad($x, strlen($x) + (3 * strlen($x)) % 4, 0, STR_PAD_LEFT);
$str = '0x';
while (strlen($x)) {
$part = substr($x, 0, 4);
$str.= dechex(bindec($part));
$x = substr($x, 4);
}
if ($this->is_negative) {
$str = '-' . $str;
}
$temp = new static($str, 8 * $base); // ie. either -16 or +16
$this->value = $temp->value;
$this->is_negative = $temp->is_negative;
break;
default:
// base not supported, so we'll let $this == 0
}
}
/**
* Converts a BigInteger to a byte string (eg. base-256).
*
* Negative numbers are saved as positive numbers, unless $twos_compliment is set to true, at which point, they're
* saved as two's compliment.
*
* Here's an example:
* <code>
* <?php
* $a = new \phpseclib\Math\BigInteger('65');
*
* echo $a->toBytes(); // outputs chr(65)
* ?>
* </code>
*
* @param bool $twos_compliment
* @return string
* @access public
* @internal Converts a base-2**26 number to base-2**8
*/
function toBytes($twos_compliment = false)
{
if ($twos_compliment) {
$comparison = $this->compare(new static());
if ($comparison == 0) {
return $this->precision > 0 ? str_repeat(chr(0), ($this->precision + 1) >> 3) : '';
}
$temp = $comparison < 0 ? $this->add(new static(1)) : $this->copy();
$bytes = $temp->toBytes();
if (!strlen($bytes)) { // eg. if the number we're trying to convert is -1
$bytes = chr(0);
}
if ($this->precision <= 0 && (ord($bytes[0]) & 0x80)) {
$bytes = chr(0) . $bytes;
}
return $comparison < 0 ? ~$bytes : $bytes;
}
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
if (gmp_cmp($this->value, gmp_init(0)) == 0) {
return $this->precision > 0 ? str_repeat(chr(0), ($this->precision + 1) >> 3) : '';
}
if (function_exists('gmp_export')) {
$temp = gmp_export($this->value);
} else {
$temp = gmp_strval(gmp_abs($this->value), 16);
$temp = (strlen($temp) & 1) ? '0' . $temp : $temp;
$temp = pack('H*', $temp);
}
return $this->precision > 0 ?
substr(str_pad($temp, $this->precision >> 3, chr(0), STR_PAD_LEFT), -($this->precision >> 3)) :
ltrim($temp, chr(0));
case self::MODE_BCMATH:
if ($this->value === '0') {
return $this->precision > 0 ? str_repeat(chr(0), ($this->precision + 1) >> 3) : '';
}
$value = '';
$current = $this->value;
if ($current[0] == '-') {
$current = substr($current, 1);
}
while (bccomp($current, '0', 0) > 0) {
$temp = bcmod($current, '16777216');
$value = chr($temp >> 16) . chr($temp >> 8) . chr($temp) . $value;
$current = bcdiv($current, '16777216', 0);
}
return $this->precision > 0 ?
substr(str_pad($value, $this->precision >> 3, chr(0), STR_PAD_LEFT), -($this->precision >> 3)) :
ltrim($value, chr(0));
}
if (!count($this->value)) {
return $this->precision > 0 ? str_repeat(chr(0), ($this->precision + 1) >> 3) : '';
}
$result = $this->_int2bytes($this->value[count($this->value) - 1]);
$temp = $this->copy();
for ($i = count($temp->value) - 2; $i >= 0; --$i) {
$temp->_base256_lshift($result, self::$base);
$result = $result | str_pad($temp->_int2bytes($temp->value[$i]), strlen($result), chr(0), STR_PAD_LEFT);
}
return $this->precision > 0 ?
str_pad(substr($result, -(($this->precision + 7) >> 3)), ($this->precision + 7) >> 3, chr(0), STR_PAD_LEFT) :
$result;
}
/**
* Converts a BigInteger to a hex string (eg. base-16)).
*
* Negative numbers are saved as positive numbers, unless $twos_compliment is set to true, at which point, they're
* saved as two's compliment.
*
* Here's an example:
* <code>
* <?php
* $a = new \phpseclib\Math\BigInteger('65');
*
* echo $a->toHex(); // outputs '41'
* ?>
* </code>
*
* @param bool $twos_compliment
* @return string
* @access public
* @internal Converts a base-2**26 number to base-2**8
*/
function toHex($twos_compliment = false)
{
return bin2hex($this->toBytes($twos_compliment));
}
/**
* Converts a BigInteger to a bit string (eg. base-2).
*
* Negative numbers are saved as positive numbers, unless $twos_compliment is set to true, at which point, they're
* saved as two's compliment.
*
* Here's an example:
* <code>
* <?php
* $a = new \phpseclib\Math\BigInteger('65');
*
* echo $a->toBits(); // outputs '1000001'
* ?>
* </code>
*
* @param bool $twos_compliment
* @return string
* @access public
* @internal Converts a base-2**26 number to base-2**2
*/
function toBits($twos_compliment = false)
{
$hex = $this->toHex($twos_compliment);
$bits = '';
for ($i = strlen($hex) - 6, $start = strlen($hex) % 6; $i >= $start; $i-=6) {
$bits = str_pad(decbin(hexdec(substr($hex, $i, 6))), 24, '0', STR_PAD_LEFT) . $bits;
}
if ($start) { // hexdec('') == 0
$bits = str_pad(decbin(hexdec(substr($hex, 0, $start))), 8 * $start, '0', STR_PAD_LEFT) . $bits;
}
$result = $this->precision > 0 ? substr($bits, -$this->precision) : ltrim($bits, '0');
if ($twos_compliment && $this->compare(new static()) > 0 && $this->precision <= 0) {
return '0' . $result;
}
return $result;
}
/**
* Converts a BigInteger to a base-10 number.
*
* Here's an example:
* <code>
* <?php
* $a = new \phpseclib\Math\BigInteger('50');
*
* echo $a->toString(); // outputs 50
* ?>
* </code>
*
* @return string
* @access public
* @internal Converts a base-2**26 number to base-10**7 (which is pretty much base-10)
*/
function toString()
{
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
return gmp_strval($this->value);
case self::MODE_BCMATH:
if ($this->value === '0') {
return '0';
}
return ltrim($this->value, '0');
}
if (!count($this->value)) {
return '0';
}
$temp = $this->copy();
$temp->bitmask = false;
$temp->is_negative = false;
$divisor = new static();
$divisor->value = array(self::$max10);
$result = '';
while (count($temp->value)) {
list($temp, $mod) = $temp->divide($divisor);
$result = str_pad(isset($mod->value[0]) ? $mod->value[0] : '', self::$max10Len, '0', STR_PAD_LEFT) . $result;
}
$result = ltrim($result, '0');
if (empty($result)) {
$result = '0';
}
if ($this->is_negative) {
$result = '-' . $result;
}
return $result;
}
/**
* Copy an object
*
* PHP5 passes objects by reference while PHP4 passes by value. As such, we need a function to guarantee
* that all objects are passed by value, when appropriate. More information can be found here:
*
* {@link http://php.net/language.oop5.basic#51624}
*
* @access public
* @see self::__clone()
* @return \phpseclib\Math\BigInteger
*/
function copy()
{
$temp = new static();
$temp->value = $this->value;
$temp->is_negative = $this->is_negative;
$temp->precision = $this->precision;
$temp->bitmask = $this->bitmask;
return $temp;
}
/**
* __toString() magic method
*
* Will be called, automatically, if you're supporting just PHP5. If you're supporting PHP4, you'll need to call
* toString().
*
* @access public
* @internal Implemented per a suggestion by Techie-Michael - thanks!
*/
function __toString()
{
return $this->toString();
}
/**
* __clone() magic method
*
* Although you can call BigInteger::__toString() directly in PHP5, you cannot call BigInteger::__clone() directly
* in PHP5. You can in PHP4 since it's not a magic method, but in PHP5, you have to call it by using the PHP5
* only syntax of $y = clone $x. As such, if you're trying to write an application that works on both PHP4 and
* PHP5, call BigInteger::copy(), instead.
*
* @access public
* @see self::copy()
* @return \phpseclib\Math\BigInteger
*/
function __clone()
{
return $this->copy();
}
/**
* __sleep() magic method
*
* Will be called, automatically, when serialize() is called on a BigInteger object.
*
* @see self::__wakeup()
* @access public
*/
function __sleep()
{
$this->hex = $this->toHex(true);
$vars = array('hex');
if ($this->precision > 0) {
$vars[] = 'precision';
}
return $vars;
}
/**
* __wakeup() magic method
*
* Will be called, automatically, when unserialize() is called on a BigInteger object.
*
* @see self::__sleep()
* @access public
*/
function __wakeup()
{
$temp = new static($this->hex, -16);
$this->value = $temp->value;
$this->is_negative = $temp->is_negative;
if ($this->precision > 0) {
// recalculate $this->bitmask
$this->setPrecision($this->precision);
}
}
/**
* __debugInfo() magic method
*
* Will be called, automatically, when print_r() or var_dump() are called
*
* @access public
*/
function __debugInfo()
{
$opts = array();
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
$engine = 'gmp';
break;
case self::MODE_BCMATH:
$engine = 'bcmath';
break;
case self::MODE_INTERNAL:
$engine = 'internal';
$opts[] = PHP_INT_SIZE == 8 ? '64-bit' : '32-bit';
}
if (MATH_BIGINTEGER_MODE != self::MODE_GMP && defined('MATH_BIGINTEGER_OPENSSL_ENABLED')) {
$opts[] = 'OpenSSL';
}
if (!empty($opts)) {
$engine.= ' (' . implode('.', $opts) . ')';
}
return array(
'value' => '0x' . $this->toHex(true),
'engine' => $engine
);
}
/**
* Adds two BigIntegers.
*
* Here's an example:
* <code>
* <?php
* $a = new \phpseclib\Math\BigInteger('10');
* $b = new \phpseclib\Math\BigInteger('20');
*
* $c = $a->add($b);
*
* echo $c->toString(); // outputs 30
* ?>
* </code>
*
* @param \phpseclib\Math\BigInteger $y
* @return \phpseclib\Math\BigInteger
* @access public
* @internal Performs base-2**52 addition
*/
function add($y)
{
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
$temp = new static();
$temp->value = gmp_add($this->value, $y->value);
return $this->_normalize($temp);
case self::MODE_BCMATH:
$temp = new static();
$temp->value = bcadd($this->value, $y->value, 0);
return $this->_normalize($temp);
}
$temp = $this->_add($this->value, $this->is_negative, $y->value, $y->is_negative);
$result = new static();
$result->value = $temp[self::VALUE];
$result->is_negative = $temp[self::SIGN];
return $this->_normalize($result);
}
/**
* Performs addition.
*
* @param array $x_value
* @param bool $x_negative
* @param array $y_value
* @param bool $y_negative
* @return array
* @access private
*/
function _add($x_value, $x_negative, $y_value, $y_negative)
{
$x_size = count($x_value);
$y_size = count($y_value);
if ($x_size == 0) {
return array(
self::VALUE => $y_value,
self::SIGN => $y_negative
);
} elseif ($y_size == 0) {
return array(
self::VALUE => $x_value,
self::SIGN => $x_negative
);
}
// subtract, if appropriate
if ($x_negative != $y_negative) {
if ($x_value == $y_value) {
return array(
self::VALUE => array(),
self::SIGN => false
);
}
$temp = $this->_subtract($x_value, false, $y_value, false);
$temp[self::SIGN] = $this->_compare($x_value, false, $y_value, false) > 0 ?
$x_negative : $y_negative;
return $temp;
}
if ($x_size < $y_size) {
$size = $x_size;
$value = $y_value;
} else {
$size = $y_size;
$value = $x_value;
}
$value[count($value)] = 0; // just in case the carry adds an extra digit
$carry = 0;
for ($i = 0, $j = 1; $j < $size; $i+=2, $j+=2) {
$sum = $x_value[$j] * self::$baseFull + $x_value[$i] + $y_value[$j] * self::$baseFull + $y_value[$i] + $carry;
$carry = $sum >= self::$maxDigit2; // eg. floor($sum / 2**52); only possible values (in any base) are 0 and 1
$sum = $carry ? $sum - self::$maxDigit2 : $sum;
$temp = self::$base === 26 ? intval($sum / 0x4000000) : ($sum >> 31);
$value[$i] = (int) ($sum - self::$baseFull * $temp); // eg. a faster alternative to fmod($sum, 0x4000000)
$value[$j] = $temp;
}
if ($j == $size) { // ie. if $y_size is odd
$sum = $x_value[$i] + $y_value[$i] + $carry;
$carry = $sum >= self::$baseFull;
$value[$i] = $carry ? $sum - self::$baseFull : $sum;
++$i; // ie. let $i = $j since we've just done $value[$i]
}
if ($carry) {
for (; $value[$i] == self::$maxDigit; ++$i) {
$value[$i] = 0;
}
++$value[$i];
}
return array(
self::VALUE => $this->_trim($value),
self::SIGN => $x_negative
);
}
/**
* Subtracts two BigIntegers.
*
* Here's an example:
* <code>
* <?php
* $a = new \phpseclib\Math\BigInteger('10');
* $b = new \phpseclib\Math\BigInteger('20');
*
* $c = $a->subtract($b);
*
* echo $c->toString(); // outputs -10
* ?>
* </code>
*
* @param \phpseclib\Math\BigInteger $y
* @return \phpseclib\Math\BigInteger
* @access public
* @internal Performs base-2**52 subtraction
*/
function subtract($y)
{
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
$temp = new static();
$temp->value = gmp_sub($this->value, $y->value);
return $this->_normalize($temp);
case self::MODE_BCMATH:
$temp = new static();
$temp->value = bcsub($this->value, $y->value, 0);
return $this->_normalize($temp);
}
$temp = $this->_subtract($this->value, $this->is_negative, $y->value, $y->is_negative);
$result = new static();
$result->value = $temp[self::VALUE];
$result->is_negative = $temp[self::SIGN];
return $this->_normalize($result);
}
/**
* Performs subtraction.
*
* @param array $x_value
* @param bool $x_negative
* @param array $y_value
* @param bool $y_negative
* @return array
* @access private
*/
function _subtract($x_value, $x_negative, $y_value, $y_negative)
{
$x_size = count($x_value);
$y_size = count($y_value);
if ($x_size == 0) {
return array(
self::VALUE => $y_value,
self::SIGN => !$y_negative
);
} elseif ($y_size == 0) {
return array(
self::VALUE => $x_value,
self::SIGN => $x_negative
);
}
// add, if appropriate (ie. -$x - +$y or +$x - -$y)
if ($x_negative != $y_negative) {
$temp = $this->_add($x_value, false, $y_value, false);
$temp[self::SIGN] = $x_negative;
return $temp;
}
$diff = $this->_compare($x_value, $x_negative, $y_value, $y_negative);
if (!$diff) {
return array(
self::VALUE => array(),
self::SIGN => false
);
}
// switch $x and $y around, if appropriate.
if ((!$x_negative && $diff < 0) || ($x_negative && $diff > 0)) {
$temp = $x_value;
$x_value = $y_value;
$y_value = $temp;
$x_negative = !$x_negative;
$x_size = count($x_value);
$y_size = count($y_value);
}
// at this point, $x_value should be at least as big as - if not bigger than - $y_value
$carry = 0;
for ($i = 0, $j = 1; $j < $y_size; $i+=2, $j+=2) {
$sum = $x_value[$j] * self::$baseFull + $x_value[$i] - $y_value[$j] * self::$baseFull - $y_value[$i] - $carry;
$carry = $sum < 0; // eg. floor($sum / 2**52); only possible values (in any base) are 0 and 1
$sum = $carry ? $sum + self::$maxDigit2 : $sum;
$temp = self::$base === 26 ? intval($sum / 0x4000000) : ($sum >> 31);
$x_value[$i] = (int) ($sum - self::$baseFull * $temp);
$x_value[$j] = $temp;
}
if ($j == $y_size) { // ie. if $y_size is odd
$sum = $x_value[$i] - $y_value[$i] - $carry;
$carry = $sum < 0;
$x_value[$i] = $carry ? $sum + self::$baseFull : $sum;
++$i;
}
if ($carry) {
for (; !$x_value[$i]; ++$i) {
$x_value[$i] = self::$maxDigit;
}
--$x_value[$i];
}
return array(
self::VALUE => $this->_trim($x_value),
self::SIGN => $x_negative
);
}
/**
* Multiplies two BigIntegers
*
* Here's an example:
* <code>
* <?php
* $a = new \phpseclib\Math\BigInteger('10');
* $b = new \phpseclib\Math\BigInteger('20');
*
* $c = $a->multiply($b);
*
* echo $c->toString(); // outputs 200
* ?>
* </code>
*
* @param \phpseclib\Math\BigInteger $x
* @return \phpseclib\Math\BigInteger
* @access public
*/
function multiply($x)
{
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
$temp = new static();
$temp->value = gmp_mul($this->value, $x->value);
return $this->_normalize($temp);
case self::MODE_BCMATH:
$temp = new static();
$temp->value = bcmul($this->value, $x->value, 0);
return $this->_normalize($temp);
}
$temp = $this->_multiply($this->value, $this->is_negative, $x->value, $x->is_negative);
$product = new static();
$product->value = $temp[self::VALUE];
$product->is_negative = $temp[self::SIGN];
return $this->_normalize($product);
}
/**
* Performs multiplication.
*
* @param array $x_value
* @param bool $x_negative
* @param array $y_value
* @param bool $y_negative
* @return array
* @access private
*/
function _multiply($x_value, $x_negative, $y_value, $y_negative)
{
//if ( $x_value == $y_value ) {
// return array(
// self::VALUE => $this->_square($x_value),
// self::SIGN => $x_sign != $y_value
// );
//}
$x_length = count($x_value);
$y_length = count($y_value);
if (!$x_length || !$y_length) { // a 0 is being multiplied
return array(
self::VALUE => array(),
self::SIGN => false
);
}
return array(
self::VALUE => min($x_length, $y_length) < 2 * self::KARATSUBA_CUTOFF ?
$this->_trim($this->_regularMultiply($x_value, $y_value)) :
$this->_trim($this->_karatsuba($x_value, $y_value)),
self::SIGN => $x_negative != $y_negative
);
}
/**
* Performs long multiplication on two BigIntegers
*
* Modeled after 'multiply' in MutableBigInteger.java.
*
* @param array $x_value
* @param array $y_value
* @return array
* @access private
*/
function _regularMultiply($x_value, $y_value)
{
$x_length = count($x_value);
$y_length = count($y_value);
if (!$x_length || !$y_length) { // a 0 is being multiplied
return array();
}
if ($x_length < $y_length) {
$temp = $x_value;
$x_value = $y_value;
$y_value = $temp;
$x_length = count($x_value);
$y_length = count($y_value);
}
$product_value = $this->_array_repeat(0, $x_length + $y_length);
// the following for loop could be removed if the for loop following it
// (the one with nested for loops) initially set $i to 0, but
// doing so would also make the result in one set of unnecessary adds,
// since on the outermost loops first pass, $product->value[$k] is going
// to always be 0
$carry = 0;
for ($j = 0; $j < $x_length; ++$j) { // ie. $i = 0
$temp = $x_value[$j] * $y_value[0] + $carry; // $product_value[$k] == 0
$carry = self::$base === 26 ? intval($temp / 0x4000000) : ($temp >> 31);
$product_value[$j] = (int) ($temp - self::$baseFull * $carry);
}
$product_value[$j] = $carry;
// the above for loop is what the previous comment was talking about. the
// following for loop is the "one with nested for loops"
for ($i = 1; $i < $y_length; ++$i) {
$carry = 0;
for ($j = 0, $k = $i; $j < $x_length; ++$j, ++$k) {
$temp = $product_value[$k] + $x_value[$j] * $y_value[$i] + $carry;
$carry = self::$base === 26 ? intval($temp / 0x4000000) : ($temp >> 31);
$product_value[$k] = (int) ($temp - self::$baseFull * $carry);
}
$product_value[$k] = $carry;
}
return $product_value;
}
/**
* Performs Karatsuba multiplication on two BigIntegers
*
* See {@link http://en.wikipedia.org/wiki/Karatsuba_algorithm Karatsuba algorithm} and
* {@link http://math.libtomcrypt.com/files/tommath.pdf#page=120 MPM 5.2.3}.
*
* @param array $x_value
* @param array $y_value
* @return array
* @access private
*/
function _karatsuba($x_value, $y_value)
{
$m = min(count($x_value) >> 1, count($y_value) >> 1);
if ($m < self::KARATSUBA_CUTOFF) {
return $this->_regularMultiply($x_value, $y_value);
}
$x1 = array_slice($x_value, $m);
$x0 = array_slice($x_value, 0, $m);
$y1 = array_slice($y_value, $m);
$y0 = array_slice($y_value, 0, $m);
$z2 = $this->_karatsuba($x1, $y1);
$z0 = $this->_karatsuba($x0, $y0);
$z1 = $this->_add($x1, false, $x0, false);
$temp = $this->_add($y1, false, $y0, false);
$z1 = $this->_karatsuba($z1[self::VALUE], $temp[self::VALUE]);
$temp = $this->_add($z2, false, $z0, false);
$z1 = $this->_subtract($z1, false, $temp[self::VALUE], false);
$z2 = array_merge(array_fill(0, 2 * $m, 0), $z2);
$z1[self::VALUE] = array_merge(array_fill(0, $m, 0), $z1[self::VALUE]);
$xy = $this->_add($z2, false, $z1[self::VALUE], $z1[self::SIGN]);
$xy = $this->_add($xy[self::VALUE], $xy[self::SIGN], $z0, false);
return $xy[self::VALUE];
}
/**
* Performs squaring
*
* @param array $x
* @return array
* @access private
*/
function _square($x = false)
{
return count($x) < 2 * self::KARATSUBA_CUTOFF ?
$this->_trim($this->_baseSquare($x)) :
$this->_trim($this->_karatsubaSquare($x));
}
/**
* Performs traditional squaring on two BigIntegers
*
* Squaring can be done faster than multiplying a number by itself can be. See
* {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf#page=7 HAC 14.2.4} /
* {@link http://math.libtomcrypt.com/files/tommath.pdf#page=141 MPM 5.3} for more information.
*
* @param array $value
* @return array
* @access private
*/
function _baseSquare($value)
{
if (empty($value)) {
return array();
}
$square_value = $this->_array_repeat(0, 2 * count($value));
for ($i = 0, $max_index = count($value) - 1; $i <= $max_index; ++$i) {
$i2 = $i << 1;
$temp = $square_value[$i2] + $value[$i] * $value[$i];
$carry = self::$base === 26 ? intval($temp / 0x4000000) : ($temp >> 31);
$square_value[$i2] = (int) ($temp - self::$baseFull * $carry);
// note how we start from $i+1 instead of 0 as we do in multiplication.
for ($j = $i + 1, $k = $i2 + 1; $j <= $max_index; ++$j, ++$k) {
$temp = $square_value[$k] + 2 * $value[$j] * $value[$i] + $carry;
$carry = self::$base === 26 ? intval($temp / 0x4000000) : ($temp >> 31);
$square_value[$k] = (int) ($temp - self::$baseFull * $carry);
}
// the following line can yield values larger 2**15. at this point, PHP should switch
// over to floats.
$square_value[$i + $max_index + 1] = $carry;
}
return $square_value;
}
/**
* Performs Karatsuba "squaring" on two BigIntegers
*
* See {@link http://en.wikipedia.org/wiki/Karatsuba_algorithm Karatsuba algorithm} and
* {@link http://math.libtomcrypt.com/files/tommath.pdf#page=151 MPM 5.3.4}.
*
* @param array $value
* @return array
* @access private
*/
function _karatsubaSquare($value)
{
$m = count($value) >> 1;
if ($m < self::KARATSUBA_CUTOFF) {
return $this->_baseSquare($value);
}
$x1 = array_slice($value, $m);
$x0 = array_slice($value, 0, $m);
$z2 = $this->_karatsubaSquare($x1);
$z0 = $this->_karatsubaSquare($x0);
$z1 = $this->_add($x1, false, $x0, false);
$z1 = $this->_karatsubaSquare($z1[self::VALUE]);
$temp = $this->_add($z2, false, $z0, false);
$z1 = $this->_subtract($z1, false, $temp[self::VALUE], false);
$z2 = array_merge(array_fill(0, 2 * $m, 0), $z2);
$z1[self::VALUE] = array_merge(array_fill(0, $m, 0), $z1[self::VALUE]);
$xx = $this->_add($z2, false, $z1[self::VALUE], $z1[self::SIGN]);
$xx = $this->_add($xx[self::VALUE], $xx[self::SIGN], $z0, false);
return $xx[self::VALUE];
}
/**
* Divides two BigIntegers.
*
* Returns an array whose first element contains the quotient and whose second element contains the
* "common residue". If the remainder would be positive, the "common residue" and the remainder are the
* same. If the remainder would be negative, the "common residue" is equal to the sum of the remainder
* and the divisor (basically, the "common residue" is the first positive modulo).
*
* Here's an example:
* <code>
* <?php
* $a = new \phpseclib\Math\BigInteger('10');
* $b = new \phpseclib\Math\BigInteger('20');
*
* list($quotient, $remainder) = $a->divide($b);
*
* echo $quotient->toString(); // outputs 0
* echo "\r\n";
* echo $remainder->toString(); // outputs 10
* ?>
* </code>
*
* @param \phpseclib\Math\BigInteger $y
* @return array
* @access public
* @internal This function is based off of {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf#page=9 HAC 14.20}.
*/
function divide($y)
{
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
$quotient = new static();
$remainder = new static();
list($quotient->value, $remainder->value) = gmp_div_qr($this->value, $y->value);
if (gmp_sign($remainder->value) < 0) {
$remainder->value = gmp_add($remainder->value, gmp_abs($y->value));
}
return array($this->_normalize($quotient), $this->_normalize($remainder));
case self::MODE_BCMATH:
$quotient = new static();
$remainder = new static();
$quotient->value = bcdiv($this->value, $y->value, 0);
$remainder->value = bcmod($this->value, $y->value);
if ($remainder->value[0] == '-') {
$remainder->value = bcadd($remainder->value, $y->value[0] == '-' ? substr($y->value, 1) : $y->value, 0);
}
return array($this->_normalize($quotient), $this->_normalize($remainder));
}
if (count($y->value) == 1) {
list($q, $r) = $this->_divide_digit($this->value, $y->value[0]);
$quotient = new static();
$remainder = new static();
$quotient->value = $q;
$remainder->value = array($r);
$quotient->is_negative = $this->is_negative != $y->is_negative;
return array($this->_normalize($quotient), $this->_normalize($remainder));
}
static $zero;
if (!isset($zero)) {
$zero = new static();
}
$x = $this->copy();
$y = $y->copy();
$x_sign = $x->is_negative;
$y_sign = $y->is_negative;
$x->is_negative = $y->is_negative = false;
$diff = $x->compare($y);
if (!$diff) {
$temp = new static();
$temp->value = array(1);
$temp->is_negative = $x_sign != $y_sign;
return array($this->_normalize($temp), $this->_normalize(new static()));
}
if ($diff < 0) {
// if $x is negative, "add" $y.
if ($x_sign) {
$x = $y->subtract($x);
}
return array($this->_normalize(new static()), $this->_normalize($x));
}
// normalize $x and $y as described in HAC 14.23 / 14.24
$msb = $y->value[count($y->value) - 1];
for ($shift = 0; !($msb & self::$msb); ++$shift) {
$msb <<= 1;
}
$x->_lshift($shift);
$y->_lshift($shift);
$y_value = &$y->value;
$x_max = count($x->value) - 1;
$y_max = count($y->value) - 1;
$quotient = new static();
$quotient_value = &$quotient->value;
$quotient_value = $this->_array_repeat(0, $x_max - $y_max + 1);
static $temp, $lhs, $rhs;
if (!isset($temp)) {
$temp = new static();
$lhs = new static();
$rhs = new static();
}
$temp_value = &$temp->value;
$rhs_value = &$rhs->value;
// $temp = $y << ($x_max - $y_max-1) in base 2**26
$temp_value = array_merge($this->_array_repeat(0, $x_max - $y_max), $y_value);
while ($x->compare($temp) >= 0) {
// calculate the "common residue"
++$quotient_value[$x_max - $y_max];
$x = $x->subtract($temp);
$x_max = count($x->value) - 1;
}
for ($i = $x_max; $i >= $y_max + 1; --$i) {
$x_value = &$x->value;
$x_window = array(
isset($x_value[$i]) ? $x_value[$i] : 0,
isset($x_value[$i - 1]) ? $x_value[$i - 1] : 0,
isset($x_value[$i - 2]) ? $x_value[$i - 2] : 0
);
$y_window = array(
$y_value[$y_max],
($y_max > 0) ? $y_value[$y_max - 1] : 0
);
$q_index = $i - $y_max - 1;
if ($x_window[0] == $y_window[0]) {
$quotient_value[$q_index] = self::$maxDigit;
} else {
$quotient_value[$q_index] = $this->_safe_divide(
$x_window[0] * self::$baseFull + $x_window[1],
$y_window[0]
);
}
$temp_value = array($y_window[1], $y_window[0]);
$lhs->value = array($quotient_value[$q_index]);
$lhs = $lhs->multiply($temp);
$rhs_value = array($x_window[2], $x_window[1], $x_window[0]);
while ($lhs->compare($rhs) > 0) {
--$quotient_value[$q_index];
$lhs->value = array($quotient_value[$q_index]);
$lhs = $lhs->multiply($temp);
}
$adjust = $this->_array_repeat(0, $q_index);
$temp_value = array($quotient_value[$q_index]);
$temp = $temp->multiply($y);
$temp_value = &$temp->value;
if (count($temp_value)) {
$temp_value = array_merge($adjust, $temp_value);
}
$x = $x->subtract($temp);
if ($x->compare($zero) < 0) {
$temp_value = array_merge($adjust, $y_value);
$x = $x->add($temp);
--$quotient_value[$q_index];
}
$x_max = count($x_value) - 1;
}
// unnormalize the remainder
$x->_rshift($shift);
$quotient->is_negative = $x_sign != $y_sign;
// calculate the "common residue", if appropriate
if ($x_sign) {
$y->_rshift($shift);
$x = $y->subtract($x);
}
return array($this->_normalize($quotient), $this->_normalize($x));
}
/**
* Divides a BigInteger by a regular integer
*
* abc / x = a00 / x + b0 / x + c / x
*
* @param array $dividend
* @param array $divisor
* @return array
* @access private
*/
function _divide_digit($dividend, $divisor)
{
$carry = 0;
$result = array();
for ($i = count($dividend) - 1; $i >= 0; --$i) {
$temp = self::$baseFull * $carry + $dividend[$i];
$result[$i] = $this->_safe_divide($temp, $divisor);
$carry = (int) ($temp - $divisor * $result[$i]);
}
return array($result, $carry);
}
/**
* Performs modular exponentiation.
*
* Here's an example:
* <code>
* <?php
* $a = new \phpseclib\Math\BigInteger('10');
* $b = new \phpseclib\Math\BigInteger('20');
* $c = new \phpseclib\Math\BigInteger('30');
*
* $c = $a->modPow($b, $c);
*
* echo $c->toString(); // outputs 10
* ?>
* </code>
*
* @param \phpseclib\Math\BigInteger $e
* @param \phpseclib\Math\BigInteger $n
* @return \phpseclib\Math\BigInteger
* @access public
* @internal The most naive approach to modular exponentiation has very unreasonable requirements, and
* and although the approach involving repeated squaring does vastly better, it, too, is impractical
* for our purposes. The reason being that division - by far the most complicated and time-consuming
* of the basic operations (eg. +,-,*,/) - occurs multiple times within it.
*
* Modular reductions resolve this issue. Although an individual modular reduction takes more time
* then an individual division, when performed in succession (with the same modulo), they're a lot faster.
*
* The two most commonly used modular reductions are Barrett and Montgomery reduction. Montgomery reduction,
* although faster, only works when the gcd of the modulo and of the base being used is 1. In RSA, when the
* base is a power of two, the modulo - a product of two primes - is always going to have a gcd of 1 (because
* the product of two odd numbers is odd), but what about when RSA isn't used?
*
* In contrast, Barrett reduction has no such constraint. As such, some bigint implementations perform a
* Barrett reduction after every operation in the modpow function. Others perform Barrett reductions when the
* modulo is even and Montgomery reductions when the modulo is odd. BigInteger.java's modPow method, however,
* uses a trick involving the Chinese Remainder Theorem to factor the even modulo into two numbers - one odd and
* the other, a power of two - and recombine them, later. This is the method that this modPow function uses.
* {@link http://islab.oregonstate.edu/papers/j34monex.pdf Montgomery Reduction with Even Modulus} elaborates.
*/
function modPow($e, $n)
{
$n = $this->bitmask !== false && $this->bitmask->compare($n) < 0 ? $this->bitmask : $n->abs();
if ($e->compare(new static()) < 0) {
$e = $e->abs();
$temp = $this->modInverse($n);
if ($temp === false) {
return false;
}
return $this->_normalize($temp->modPow($e, $n));
}
if (MATH_BIGINTEGER_MODE == self::MODE_GMP) {
$temp = new static();
$temp->value = gmp_powm($this->value, $e->value, $n->value);
return $this->_normalize($temp);
}
if ($this->compare(new static()) < 0 || $this->compare($n) > 0) {
list(, $temp) = $this->divide($n);
return $temp->modPow($e, $n);
}
if (defined('MATH_BIGINTEGER_OPENSSL_ENABLED')) {
$components = array(
'modulus' => $n->toBytes(true),
'publicExponent' => $e->toBytes(true)
);
$components = array(
'modulus' => pack('Ca*a*', 2, $this->_encodeASN1Length(strlen($components['modulus'])), $components['modulus']),
'publicExponent' => pack('Ca*a*', 2, $this->_encodeASN1Length(strlen($components['publicExponent'])), $components['publicExponent'])
);
$RSAPublicKey = pack(
'Ca*a*a*',
48,
$this->_encodeASN1Length(strlen($components['modulus']) + strlen($components['publicExponent'])),
$components['modulus'],
$components['publicExponent']
);
$rsaOID = pack('H*', '300d06092a864886f70d0101010500'); // hex version of MA0GCSqGSIb3DQEBAQUA
$RSAPublicKey = chr(0) . $RSAPublicKey;
$RSAPublicKey = chr(3) . $this->_encodeASN1Length(strlen($RSAPublicKey)) . $RSAPublicKey;
$encapsulated = pack(
'Ca*a*',
48,
$this->_encodeASN1Length(strlen($rsaOID . $RSAPublicKey)),
$rsaOID . $RSAPublicKey
);
$RSAPublicKey = "-----BEGIN PUBLIC KEY-----\r\n" .
chunk_split(base64_encode($encapsulated)) .
'-----END PUBLIC KEY-----';
$plaintext = str_pad($this->toBytes(), strlen($n->toBytes(true)) - 1, "\0", STR_PAD_LEFT);
if (openssl_public_encrypt($plaintext, $result, $RSAPublicKey, OPENSSL_NO_PADDING)) {
return new static($result, 256);
}
}
if (MATH_BIGINTEGER_MODE == self::MODE_BCMATH) {
$temp = new static();
$temp->value = bcpowmod($this->value, $e->value, $n->value, 0);
return $this->_normalize($temp);
}
if (empty($e->value)) {
$temp = new static();
$temp->value = array(1);
return $this->_normalize($temp);
}
if ($e->value == array(1)) {
list(, $temp) = $this->divide($n);
return $this->_normalize($temp);
}
if ($e->value == array(2)) {
$temp = new static();
$temp->value = $this->_square($this->value);
list(, $temp) = $temp->divide($n);
return $this->_normalize($temp);
}
return $this->_normalize($this->_slidingWindow($e, $n, self::BARRETT));
// the following code, although not callable, can be run independently of the above code
// although the above code performed better in my benchmarks the following could might
// perform better under different circumstances. in lieu of deleting it it's just been
// made uncallable
// is the modulo odd?
if ($n->value[0] & 1) {
return $this->_normalize($this->_slidingWindow($e, $n, self::MONTGOMERY));
}
// if it's not, it's even
// find the lowest set bit (eg. the max pow of 2 that divides $n)
for ($i = 0; $i < count($n->value); ++$i) {
if ($n->value[$i]) {
$temp = decbin($n->value[$i]);
$j = strlen($temp) - strrpos($temp, '1') - 1;
$j+= 26 * $i;
break;
}
}
// at this point, 2^$j * $n/(2^$j) == $n
$mod1 = $n->copy();
$mod1->_rshift($j);
$mod2 = new static();
$mod2->value = array(1);
$mod2->_lshift($j);
$part1 = ($mod1->value != array(1)) ? $this->_slidingWindow($e, $mod1, self::MONTGOMERY) : new static();
$part2 = $this->_slidingWindow($e, $mod2, self::POWEROF2);
$y1 = $mod2->modInverse($mod1);
$y2 = $mod1->modInverse($mod2);
$result = $part1->multiply($mod2);
$result = $result->multiply($y1);
$temp = $part2->multiply($mod1);
$temp = $temp->multiply($y2);
$result = $result->add($temp);
list(, $result) = $result->divide($n);
return $this->_normalize($result);
}
/**
* Performs modular exponentiation.
*
* Alias for modPow().
*
* @param \phpseclib\Math\BigInteger $e
* @param \phpseclib\Math\BigInteger $n
* @return \phpseclib\Math\BigInteger
* @access public
*/
function powMod($e, $n)
{
return $this->modPow($e, $n);
}
/**
* Sliding Window k-ary Modular Exponentiation
*
* Based on {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf#page=27 HAC 14.85} /
* {@link http://math.libtomcrypt.com/files/tommath.pdf#page=210 MPM 7.7}. In a departure from those algorithims,
* however, this function performs a modular reduction after every multiplication and squaring operation.
* As such, this function has the same preconditions that the reductions being used do.
*
* @param \phpseclib\Math\BigInteger $e
* @param \phpseclib\Math\BigInteger $n
* @param int $mode
* @return \phpseclib\Math\BigInteger
* @access private
*/
function _slidingWindow($e, $n, $mode)
{
static $window_ranges = array(7, 25, 81, 241, 673, 1793); // from BigInteger.java's oddModPow function
//static $window_ranges = array(0, 7, 36, 140, 450, 1303, 3529); // from MPM 7.3.1
$e_value = $e->value;
$e_length = count($e_value) - 1;
$e_bits = decbin($e_value[$e_length]);
for ($i = $e_length - 1; $i >= 0; --$i) {
$e_bits.= str_pad(decbin($e_value[$i]), self::$base, '0', STR_PAD_LEFT);
}
$e_length = strlen($e_bits);
// calculate the appropriate window size.
// $window_size == 3 if $window_ranges is between 25 and 81, for example.
for ($i = 0, $window_size = 1; $i < count($window_ranges) && $e_length > $window_ranges[$i]; ++$window_size, ++$i) {
}
$n_value = $n->value;
// precompute $this^0 through $this^$window_size
$powers = array();
$powers[1] = $this->_prepareReduce($this->value, $n_value, $mode);
$powers[2] = $this->_squareReduce($powers[1], $n_value, $mode);
// we do every other number since substr($e_bits, $i, $j+1) (see below) is supposed to end
// in a 1. ie. it's supposed to be odd.
$temp = 1 << ($window_size - 1);
for ($i = 1; $i < $temp; ++$i) {
$i2 = $i << 1;
$powers[$i2 + 1] = $this->_multiplyReduce($powers[$i2 - 1], $powers[2], $n_value, $mode);
}
$result = array(1);
$result = $this->_prepareReduce($result, $n_value, $mode);
for ($i = 0; $i < $e_length;) {
if (!$e_bits[$i]) {
$result = $this->_squareReduce($result, $n_value, $mode);
++$i;
} else {
for ($j = $window_size - 1; $j > 0; --$j) {
if (!empty($e_bits[$i + $j])) {
break;
}
}
// eg. the length of substr($e_bits, $i, $j + 1)
for ($k = 0; $k <= $j; ++$k) {
$result = $this->_squareReduce($result, $n_value, $mode);
}
$result = $this->_multiplyReduce($result, $powers[bindec(substr($e_bits, $i, $j + 1))], $n_value, $mode);
$i += $j + 1;
}
}
$temp = new static();
$temp->value = $this->_reduce($result, $n_value, $mode);
return $temp;
}
/**
* Modular reduction
*
* For most $modes this will return the remainder.
*
* @see self::_slidingWindow()
* @access private
* @param array $x
* @param array $n
* @param int $mode
* @return array
*/
function _reduce($x, $n, $mode)
{
switch ($mode) {
case self::MONTGOMERY:
return $this->_montgomery($x, $n);
case self::BARRETT:
return $this->_barrett($x, $n);
case self::POWEROF2:
$lhs = new static();
$lhs->value = $x;
$rhs = new static();
$rhs->value = $n;
return $x->_mod2($n);
case self::CLASSIC:
$lhs = new static();
$lhs->value = $x;
$rhs = new static();
$rhs->value = $n;
list(, $temp) = $lhs->divide($rhs);
return $temp->value;
case self::NONE:
return $x;
default:
// an invalid $mode was provided
}
}
/**
* Modular reduction preperation
*
* @see self::_slidingWindow()
* @access private
* @param array $x
* @param array $n
* @param int $mode
* @return array
*/
function _prepareReduce($x, $n, $mode)
{
if ($mode == self::MONTGOMERY) {
return $this->_prepMontgomery($x, $n);
}
return $this->_reduce($x, $n, $mode);
}
/**
* Modular multiply
*
* @see self::_slidingWindow()
* @access private
* @param array $x
* @param array $y
* @param array $n
* @param int $mode
* @return array
*/
function _multiplyReduce($x, $y, $n, $mode)
{
if ($mode == self::MONTGOMERY) {
return $this->_montgomeryMultiply($x, $y, $n);
}
$temp = $this->_multiply($x, false, $y, false);
return $this->_reduce($temp[self::VALUE], $n, $mode);
}
/**
* Modular square
*
* @see self::_slidingWindow()
* @access private
* @param array $x
* @param array $n
* @param int $mode
* @return array
*/
function _squareReduce($x, $n, $mode)
{
if ($mode == self::MONTGOMERY) {
return $this->_montgomeryMultiply($x, $x, $n);
}
return $this->_reduce($this->_square($x), $n, $mode);
}
/**
* Modulos for Powers of Two
*
* Calculates $x%$n, where $n = 2**$e, for some $e. Since this is basically the same as doing $x & ($n-1),
* we'll just use this function as a wrapper for doing that.
*
* @see self::_slidingWindow()
* @access private
* @param \phpseclib\Math\BigInteger $n
* @return \phpseclib\Math\BigInteger
*/
function _mod2($n)
{
$temp = new static();
$temp->value = array(1);
return $this->bitwise_and($n->subtract($temp));
}
/**
* Barrett Modular Reduction
*
* See {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf#page=14 HAC 14.3.3} /
* {@link http://math.libtomcrypt.com/files/tommath.pdf#page=165 MPM 6.2.5} for more information. Modified slightly,
* so as not to require negative numbers (initially, this script didn't support negative numbers).
*
* Employs "folding", as described at
* {@link http://www.cosic.esat.kuleuven.be/publications/thesis-149.pdf#page=66 thesis-149.pdf#page=66}. To quote from
* it, "the idea [behind folding] is to find a value x' such that x (mod m) = x' (mod m), with x' being smaller than x."
*
* Unfortunately, the "Barrett Reduction with Folding" algorithm described in thesis-149.pdf is not, as written, all that
* usable on account of (1) its not using reasonable radix points as discussed in
* {@link http://math.libtomcrypt.com/files/tommath.pdf#page=162 MPM 6.2.2} and (2) the fact that, even with reasonable
* radix points, it only works when there are an even number of digits in the denominator. The reason for (2) is that
* (x >> 1) + (x >> 1) != x / 2 + x / 2. If x is even, they're the same, but if x is odd, they're not. See the in-line
* comments for details.
*
* @see self::_slidingWindow()
* @access private
* @param array $n
* @param array $m
* @return array
*/
function _barrett($n, $m)
{
static $cache = array(
self::VARIABLE => array(),
self::DATA => array()
);
$m_length = count($m);
// if ($this->_compare($n, $this->_square($m)) >= 0) {
if (count($n) > 2 * $m_length) {
$lhs = new static();
$rhs = new static();
$lhs->value = $n;
$rhs->value = $m;
list(, $temp) = $lhs->divide($rhs);
return $temp->value;
}
// if (m.length >> 1) + 2 <= m.length then m is too small and n can't be reduced
if ($m_length < 5) {
return $this->_regularBarrett($n, $m);
}
// n = 2 * m.length
if (($key = array_search($m, $cache[self::VARIABLE])) === false) {
$key = count($cache[self::VARIABLE]);
$cache[self::VARIABLE][] = $m;
$lhs = new static();
$lhs_value = &$lhs->value;
$lhs_value = $this->_array_repeat(0, $m_length + ($m_length >> 1));
$lhs_value[] = 1;
$rhs = new static();
$rhs->value = $m;
list($u, $m1) = $lhs->divide($rhs);
$u = $u->value;
$m1 = $m1->value;
$cache[self::DATA][] = array(
'u' => $u, // m.length >> 1 (technically (m.length >> 1) + 1)
'm1'=> $m1 // m.length
);
} else {
extract($cache[self::DATA][$key]);
}
$cutoff = $m_length + ($m_length >> 1);
$lsd = array_slice($n, 0, $cutoff); // m.length + (m.length >> 1)
$msd = array_slice($n, $cutoff); // m.length >> 1
$lsd = $this->_trim($lsd);
$temp = $this->_multiply($msd, false, $m1, false);
$n = $this->_add($lsd, false, $temp[self::VALUE], false); // m.length + (m.length >> 1) + 1
if ($m_length & 1) {
return $this->_regularBarrett($n[self::VALUE], $m);
}
// (m.length + (m.length >> 1) + 1) - (m.length - 1) == (m.length >> 1) + 2
$temp = array_slice($n[self::VALUE], $m_length - 1);
// if even: ((m.length >> 1) + 2) + (m.length >> 1) == m.length + 2
// if odd: ((m.length >> 1) + 2) + (m.length >> 1) == (m.length - 1) + 2 == m.length + 1
$temp = $this->_multiply($temp, false, $u, false);
// if even: (m.length + 2) - ((m.length >> 1) + 1) = m.length - (m.length >> 1) + 1
// if odd: (m.length + 1) - ((m.length >> 1) + 1) = m.length - (m.length >> 1)
$temp = array_slice($temp[self::VALUE], ($m_length >> 1) + 1);
// if even: (m.length - (m.length >> 1) + 1) + m.length = 2 * m.length - (m.length >> 1) + 1
// if odd: (m.length - (m.length >> 1)) + m.length = 2 * m.length - (m.length >> 1)
$temp = $this->_multiply($temp, false, $m, false);
// at this point, if m had an odd number of digits, we'd be subtracting a 2 * m.length - (m.length >> 1) digit
// number from a m.length + (m.length >> 1) + 1 digit number. ie. there'd be an extra digit and the while loop
// following this comment would loop a lot (hence our calling _regularBarrett() in that situation).
$result = $this->_subtract($n[self::VALUE], false, $temp[self::VALUE], false);
while ($this->_compare($result[self::VALUE], $result[self::SIGN], $m, false) >= 0) {
$result = $this->_subtract($result[self::VALUE], $result[self::SIGN], $m, false);
}
return $result[self::VALUE];
}
/**
* (Regular) Barrett Modular Reduction
*
* For numbers with more than four digits BigInteger::_barrett() is faster. The difference between that and this
* is that this function does not fold the denominator into a smaller form.
*
* @see self::_slidingWindow()
* @access private
* @param array $x
* @param array $n
* @return array
*/
function _regularBarrett($x, $n)
{
static $cache = array(
self::VARIABLE => array(),
self::DATA => array()
);
$n_length = count($n);
if (count($x) > 2 * $n_length) {
$lhs = new static();
$rhs = new static();
$lhs->value = $x;
$rhs->value = $n;
list(, $temp) = $lhs->divide($rhs);
return $temp->value;
}
if (($key = array_search($n, $cache[self::VARIABLE])) === false) {
$key = count($cache[self::VARIABLE]);
$cache[self::VARIABLE][] = $n;
$lhs = new static();
$lhs_value = &$lhs->value;
$lhs_value = $this->_array_repeat(0, 2 * $n_length);
$lhs_value[] = 1;
$rhs = new static();
$rhs->value = $n;
list($temp, ) = $lhs->divide($rhs); // m.length
$cache[self::DATA][] = $temp->value;
}
// 2 * m.length - (m.length - 1) = m.length + 1
$temp = array_slice($x, $n_length - 1);
// (m.length + 1) + m.length = 2 * m.length + 1
$temp = $this->_multiply($temp, false, $cache[self::DATA][$key], false);
// (2 * m.length + 1) - (m.length - 1) = m.length + 2
$temp = array_slice($temp[self::VALUE], $n_length + 1);
// m.length + 1
$result = array_slice($x, 0, $n_length + 1);
// m.length + 1
$temp = $this->_multiplyLower($temp, false, $n, false, $n_length + 1);
// $temp == array_slice($temp->_multiply($temp, false, $n, false)->value, 0, $n_length + 1)
if ($this->_compare($result, false, $temp[self::VALUE], $temp[self::SIGN]) < 0) {
$corrector_value = $this->_array_repeat(0, $n_length + 1);
$corrector_value[count($corrector_value)] = 1;
$result = $this->_add($result, false, $corrector_value, false);
$result = $result[self::VALUE];
}
// at this point, we're subtracting a number with m.length + 1 digits from another number with m.length + 1 digits
$result = $this->_subtract($result, false, $temp[self::VALUE], $temp[self::SIGN]);
while ($this->_compare($result[self::VALUE], $result[self::SIGN], $n, false) > 0) {
$result = $this->_subtract($result[self::VALUE], $result[self::SIGN], $n, false);
}
return $result[self::VALUE];
}
/**
* Performs long multiplication up to $stop digits
*
* If you're going to be doing array_slice($product->value, 0, $stop), some cycles can be saved.
*
* @see self::_regularBarrett()
* @param array $x_value
* @param bool $x_negative
* @param array $y_value
* @param bool $y_negative
* @param int $stop
* @return array
* @access private
*/
function _multiplyLower($x_value, $x_negative, $y_value, $y_negative, $stop)
{
$x_length = count($x_value);
$y_length = count($y_value);
if (!$x_length || !$y_length) { // a 0 is being multiplied
return array(
self::VALUE => array(),
self::SIGN => false
);
}
if ($x_length < $y_length) {
$temp = $x_value;
$x_value = $y_value;
$y_value = $temp;
$x_length = count($x_value);
$y_length = count($y_value);
}
$product_value = $this->_array_repeat(0, $x_length + $y_length);
// the following for loop could be removed if the for loop following it
// (the one with nested for loops) initially set $i to 0, but
// doing so would also make the result in one set of unnecessary adds,
// since on the outermost loops first pass, $product->value[$k] is going
// to always be 0
$carry = 0;
for ($j = 0; $j < $x_length; ++$j) { // ie. $i = 0, $k = $i
$temp = $x_value[$j] * $y_value[0] + $carry; // $product_value[$k] == 0
$carry = self::$base === 26 ? intval($temp / 0x4000000) : ($temp >> 31);
$product_value[$j] = (int) ($temp - self::$baseFull * $carry);
}
if ($j < $stop) {
$product_value[$j] = $carry;
}
// the above for loop is what the previous comment was talking about. the
// following for loop is the "one with nested for loops"
for ($i = 1; $i < $y_length; ++$i) {
$carry = 0;
for ($j = 0, $k = $i; $j < $x_length && $k < $stop; ++$j, ++$k) {
$temp = $product_value[$k] + $x_value[$j] * $y_value[$i] + $carry;
$carry = self::$base === 26 ? intval($temp / 0x4000000) : ($temp >> 31);
$product_value[$k] = (int) ($temp - self::$baseFull * $carry);
}
if ($k < $stop) {
$product_value[$k] = $carry;
}
}
return array(
self::VALUE => $this->_trim($product_value),
self::SIGN => $x_negative != $y_negative
);
}
/**
* Montgomery Modular Reduction
*
* ($x->_prepMontgomery($n))->_montgomery($n) yields $x % $n.
* {@link http://math.libtomcrypt.com/files/tommath.pdf#page=170 MPM 6.3} provides insights on how this can be
* improved upon (basically, by using the comba method). gcd($n, 2) must be equal to one for this function
* to work correctly.
*
* @see self::_prepMontgomery()
* @see self::_slidingWindow()
* @access private
* @param array $x
* @param array $n
* @return array
*/
function _montgomery($x, $n)
{
static $cache = array(
self::VARIABLE => array(),
self::DATA => array()
);
if (($key = array_search($n, $cache[self::VARIABLE])) === false) {
$key = count($cache[self::VARIABLE]);
$cache[self::VARIABLE][] = $x;
$cache[self::DATA][] = $this->_modInverse67108864($n);
}
$k = count($n);
$result = array(self::VALUE => $x);
for ($i = 0; $i < $k; ++$i) {
$temp = $result[self::VALUE][$i] * $cache[self::DATA][$key];
$temp = $temp - self::$baseFull * (self::$base === 26 ? intval($temp / 0x4000000) : ($temp >> 31));
$temp = $this->_regularMultiply(array($temp), $n);
$temp = array_merge($this->_array_repeat(0, $i), $temp);
$result = $this->_add($result[self::VALUE], false, $temp, false);
}
$result[self::VALUE] = array_slice($result[self::VALUE], $k);
if ($this->_compare($result, false, $n, false) >= 0) {
$result = $this->_subtract($result[self::VALUE], false, $n, false);
}
return $result[self::VALUE];
}
/**
* Montgomery Multiply
*
* Interleaves the montgomery reduction and long multiplication algorithms together as described in
* {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf#page=13 HAC 14.36}
*
* @see self::_prepMontgomery()
* @see self::_montgomery()
* @access private
* @param array $x
* @param array $y
* @param array $m
* @return array
*/
function _montgomeryMultiply($x, $y, $m)
{
$temp = $this->_multiply($x, false, $y, false);
return $this->_montgomery($temp[self::VALUE], $m);
// the following code, although not callable, can be run independently of the above code
// although the above code performed better in my benchmarks the following could might
// perform better under different circumstances. in lieu of deleting it it's just been
// made uncallable
static $cache = array(
self::VARIABLE => array(),
self::DATA => array()
);
if (($key = array_search($m, $cache[self::VARIABLE])) === false) {
$key = count($cache[self::VARIABLE]);
$cache[self::VARIABLE][] = $m;
$cache[self::DATA][] = $this->_modInverse67108864($m);
}
$n = max(count($x), count($y), count($m));
$x = array_pad($x, $n, 0);
$y = array_pad($y, $n, 0);
$m = array_pad($m, $n, 0);
$a = array(self::VALUE => $this->_array_repeat(0, $n + 1));
for ($i = 0; $i < $n; ++$i) {
$temp = $a[self::VALUE][0] + $x[$i] * $y[0];
$temp = $temp - self::$baseFull * (self::$base === 26 ? intval($temp / 0x4000000) : ($temp >> 31));
$temp = $temp * $cache[self::DATA][$key];
$temp = $temp - self::$baseFull * (self::$base === 26 ? intval($temp / 0x4000000) : ($temp >> 31));
$temp = $this->_add($this->_regularMultiply(array($x[$i]), $y), false, $this->_regularMultiply(array($temp), $m), false);
$a = $this->_add($a[self::VALUE], false, $temp[self::VALUE], false);
$a[self::VALUE] = array_slice($a[self::VALUE], 1);
}
if ($this->_compare($a[self::VALUE], false, $m, false) >= 0) {
$a = $this->_subtract($a[self::VALUE], false, $m, false);
}
return $a[self::VALUE];
}
/**
* Prepare a number for use in Montgomery Modular Reductions
*
* @see self::_montgomery()
* @see self::_slidingWindow()
* @access private
* @param array $x
* @param array $n
* @return array
*/
function _prepMontgomery($x, $n)
{
$lhs = new static();
$lhs->value = array_merge($this->_array_repeat(0, count($n)), $x);
$rhs = new static();
$rhs->value = $n;
list(, $temp) = $lhs->divide($rhs);
return $temp->value;
}
/**
* Modular Inverse of a number mod 2**26 (eg. 67108864)
*
* Based off of the bnpInvDigit function implemented and justified in the following URL:
*
* {@link http://www-cs-students.stanford.edu/~tjw/jsbn/jsbn.js}
*
* The following URL provides more info:
*
* {@link http://groups.google.com/group/sci.crypt/msg/7a137205c1be7d85}
*
* As for why we do all the bitmasking... strange things can happen when converting from floats to ints. For
* instance, on some computers, var_dump((int) -4294967297) yields int(-1) and on others, it yields
* int(-2147483648). To avoid problems stemming from this, we use bitmasks to guarantee that ints aren't
* auto-converted to floats. The outermost bitmask is present because without it, there's no guarantee that
* the "residue" returned would be the so-called "common residue". We use fmod, in the last step, because the
* maximum possible $x is 26 bits and the maximum $result is 16 bits. Thus, we have to be able to handle up to
* 40 bits, which only 64-bit floating points will support.
*
* Thanks to Pedro Gimeno Fortea for input!
*
* @see self::_montgomery()
* @access private
* @param array $x
* @return int
*/
function _modInverse67108864($x) // 2**26 == 67,108,864
{
$x = -$x[0];
$result = $x & 0x3; // x**-1 mod 2**2
$result = ($result * (2 - $x * $result)) & 0xF; // x**-1 mod 2**4
$result = ($result * (2 - ($x & 0xFF) * $result)) & 0xFF; // x**-1 mod 2**8
$result = ($result * ((2 - ($x & 0xFFFF) * $result) & 0xFFFF)) & 0xFFFF; // x**-1 mod 2**16
$result = fmod($result * (2 - fmod($x * $result, self::$baseFull)), self::$baseFull); // x**-1 mod 2**26
return $result & self::$maxDigit;
}
/**
* Calculates modular inverses.
*
* Say you have (30 mod 17 * x mod 17) mod 17 == 1. x can be found using modular inverses.
*
* Here's an example:
* <code>
* <?php
* $a = new \phpseclib\Math\BigInteger(30);
* $b = new \phpseclib\Math\BigInteger(17);
*
* $c = $a->modInverse($b);
* echo $c->toString(); // outputs 4
*
* echo "\r\n";
*
* $d = $a->multiply($c);
* list(, $d) = $d->divide($b);
* echo $d; // outputs 1 (as per the definition of modular inverse)
* ?>
* </code>
*
* @param \phpseclib\Math\BigInteger $n
* @return \phpseclib\Math\BigInteger|false
* @access public
* @internal See {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf#page=21 HAC 14.64} for more information.
*/
function modInverse($n)
{
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
$temp = new static();
$temp->value = gmp_invert($this->value, $n->value);
return ($temp->value === false) ? false : $this->_normalize($temp);
}
static $zero, $one;
if (!isset($zero)) {
$zero = new static();
$one = new static(1);
}
// $x mod -$n == $x mod $n.
$n = $n->abs();
if ($this->compare($zero) < 0) {
$temp = $this->abs();
$temp = $temp->modInverse($n);
return $this->_normalize($n->subtract($temp));
}
extract($this->extendedGCD($n));
if (!$gcd->equals($one)) {
return false;
}
$x = $x->compare($zero) < 0 ? $x->add($n) : $x;
return $this->compare($zero) < 0 ? $this->_normalize($n->subtract($x)) : $this->_normalize($x);
}
/**
* Calculates the greatest common divisor and Bezout's identity.
*
* Say you have 693 and 609. The GCD is 21. Bezout's identity states that there exist integers x and y such that
* 693*x + 609*y == 21. In point of fact, there are actually an infinite number of x and y combinations and which
* combination is returned is dependent upon which mode is in use. See
* {@link http://en.wikipedia.org/wiki/B%C3%A9zout%27s_identity Bezout's identity - Wikipedia} for more information.
*
* Here's an example:
* <code>
* <?php
* $a = new \phpseclib\Math\BigInteger(693);
* $b = new \phpseclib\Math\BigInteger(609);
*
* extract($a->extendedGCD($b));
*
* echo $gcd->toString() . "\r\n"; // outputs 21
* echo $a->toString() * $x->toString() + $b->toString() * $y->toString(); // outputs 21
* ?>
* </code>
*
* @param \phpseclib\Math\BigInteger $n
* @return \phpseclib\Math\BigInteger
* @access public
* @internal Calculates the GCD using the binary xGCD algorithim described in
* {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf#page=19 HAC 14.61}. As the text above 14.61 notes,
* the more traditional algorithim requires "relatively costly multiple-precision divisions".
*/
function extendedGCD($n)
{
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
extract(gmp_gcdext($this->value, $n->value));
return array(
'gcd' => $this->_normalize(new static($g)),
'x' => $this->_normalize(new static($s)),
'y' => $this->_normalize(new static($t))
);
case self::MODE_BCMATH:
// it might be faster to use the binary xGCD algorithim here, as well, but (1) that algorithim works
// best when the base is a power of 2 and (2) i don't think it'd make much difference, anyway. as is,
// the basic extended euclidean algorithim is what we're using.
$u = $this->value;
$v = $n->value;
$a = '1';
$b = '0';
$c = '0';
$d = '1';
while (bccomp($v, '0', 0) != 0) {
$q = bcdiv($u, $v, 0);
$temp = $u;
$u = $v;
$v = bcsub($temp, bcmul($v, $q, 0), 0);
$temp = $a;
$a = $c;
$c = bcsub($temp, bcmul($a, $q, 0), 0);
$temp = $b;
$b = $d;
$d = bcsub($temp, bcmul($b, $q, 0), 0);
}
return array(
'gcd' => $this->_normalize(new static($u)),
'x' => $this->_normalize(new static($a)),
'y' => $this->_normalize(new static($b))
);
}
$y = $n->copy();
$x = $this->copy();
$g = new static();
$g->value = array(1);
while (!(($x->value[0] & 1)|| ($y->value[0] & 1))) {
$x->_rshift(1);
$y->_rshift(1);
$g->_lshift(1);
}
$u = $x->copy();
$v = $y->copy();
$a = new static();
$b = new static();
$c = new static();
$d = new static();
$a->value = $d->value = $g->value = array(1);
$b->value = $c->value = array();
while (!empty($u->value)) {
while (!($u->value[0] & 1)) {
$u->_rshift(1);
if ((!empty($a->value) && ($a->value[0] & 1)) || (!empty($b->value) && ($b->value[0] & 1))) {
$a = $a->add($y);
$b = $b->subtract($x);
}
$a->_rshift(1);
$b->_rshift(1);
}
while (!($v->value[0] & 1)) {
$v->_rshift(1);
if ((!empty($d->value) && ($d->value[0] & 1)) || (!empty($c->value) && ($c->value[0] & 1))) {
$c = $c->add($y);
$d = $d->subtract($x);
}
$c->_rshift(1);
$d->_rshift(1);
}
if ($u->compare($v) >= 0) {
$u = $u->subtract($v);
$a = $a->subtract($c);
$b = $b->subtract($d);
} else {
$v = $v->subtract($u);
$c = $c->subtract($a);
$d = $d->subtract($b);
}
}
return array(
'gcd' => $this->_normalize($g->multiply($v)),
'x' => $this->_normalize($c),
'y' => $this->_normalize($d)
);
}
/**
* Calculates the greatest common divisor
*
* Say you have 693 and 609. The GCD is 21.
*
* Here's an example:
* <code>
* <?php
* $a = new \phpseclib\Math\BigInteger(693);
* $b = new \phpseclib\Math\BigInteger(609);
*
* $gcd = a->extendedGCD($b);
*
* echo $gcd->toString() . "\r\n"; // outputs 21
* ?>
* </code>
*
* @param \phpseclib\Math\BigInteger $n
* @return \phpseclib\Math\BigInteger
* @access public
*/
function gcd($n)
{
extract($this->extendedGCD($n));
return $gcd;
}
/**
* Absolute value.
*
* @return \phpseclib\Math\BigInteger
* @access public
*/
function abs()
{
$temp = new static();
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
$temp->value = gmp_abs($this->value);
break;
case self::MODE_BCMATH:
$temp->value = (bccomp($this->value, '0', 0) < 0) ? substr($this->value, 1) : $this->value;
break;
default:
$temp->value = $this->value;
}
return $temp;
}
/**
* Compares two numbers.
*
* Although one might think !$x->compare($y) means $x != $y, it, in fact, means the opposite. The reason for this is
* demonstrated thusly:
*
* $x > $y: $x->compare($y) > 0
* $x < $y: $x->compare($y) < 0
* $x == $y: $x->compare($y) == 0
*
* Note how the same comparison operator is used. If you want to test for equality, use $x->equals($y).
*
* @param \phpseclib\Math\BigInteger $y
* @return int that is < 0 if $this is less than $y; > 0 if $this is greater than $y, and 0 if they are equal.
* @access public
* @see self::equals()
* @internal Could return $this->subtract($x), but that's not as fast as what we do do.
*/
function compare($y)
{
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
$r = gmp_cmp($this->value, $y->value);
if ($r < -1) {
$r = -1;
}
if ($r > 1) {
$r = 1;
}
return $r;
case self::MODE_BCMATH:
return bccomp($this->value, $y->value, 0);
}
return $this->_compare($this->value, $this->is_negative, $y->value, $y->is_negative);
}
/**
* Compares two numbers.
*
* @param array $x_value
* @param bool $x_negative
* @param array $y_value
* @param bool $y_negative
* @return int
* @see self::compare()
* @access private
*/
function _compare($x_value, $x_negative, $y_value, $y_negative)
{
if ($x_negative != $y_negative) {
return (!$x_negative && $y_negative) ? 1 : -1;
}
$result = $x_negative ? -1 : 1;
if (count($x_value) != count($y_value)) {
return (count($x_value) > count($y_value)) ? $result : -$result;
}
$size = max(count($x_value), count($y_value));
$x_value = array_pad($x_value, $size, 0);
$y_value = array_pad($y_value, $size, 0);
for ($i = count($x_value) - 1; $i >= 0; --$i) {
if ($x_value[$i] != $y_value[$i]) {
return ($x_value[$i] > $y_value[$i]) ? $result : -$result;
}
}
return 0;
}
/**
* Tests the equality of two numbers.
*
* If you need to see if one number is greater than or less than another number, use BigInteger::compare()
*
* @param \phpseclib\Math\BigInteger $x
* @return bool
* @access public
* @see self::compare()
*/
function equals($x)
{
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
return gmp_cmp($this->value, $x->value) == 0;
default:
return $this->value === $x->value && $this->is_negative == $x->is_negative;
}
}
/**
* Set Precision
*
* Some bitwise operations give different results depending on the precision being used. Examples include left
* shift, not, and rotates.
*
* @param int $bits
* @access public
*/
function setPrecision($bits)
{
$this->precision = $bits;
if (MATH_BIGINTEGER_MODE != self::MODE_BCMATH) {
$this->bitmask = new static(chr((1 << ($bits & 0x7)) - 1) . str_repeat(chr(0xFF), $bits >> 3), 256);
} else {
$this->bitmask = new static(bcpow('2', $bits, 0));
}
$temp = $this->_normalize($this);
$this->value = $temp->value;
}
/**
* Logical And
*
* @param \phpseclib\Math\BigInteger $x
* @access public
* @internal Implemented per a request by Lluis Pamies i Juarez <lluis _a_ pamies.cat>
* @return \phpseclib\Math\BigInteger
*/
function bitwise_and($x)
{
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
$temp = new static();
$temp->value = gmp_and($this->value, $x->value);
return $this->_normalize($temp);
case self::MODE_BCMATH:
$left = $this->toBytes();
$right = $x->toBytes();
$length = max(strlen($left), strlen($right));
$left = str_pad($left, $length, chr(0), STR_PAD_LEFT);
$right = str_pad($right, $length, chr(0), STR_PAD_LEFT);
return $this->_normalize(new static($left & $right, 256));
}
$result = $this->copy();
$length = min(count($x->value), count($this->value));
$result->value = array_slice($result->value, 0, $length);
for ($i = 0; $i < $length; ++$i) {
$result->value[$i]&= $x->value[$i];
}
return $this->_normalize($result);
}
/**
* Logical Or
*
* @param \phpseclib\Math\BigInteger $x
* @access public
* @internal Implemented per a request by Lluis Pamies i Juarez <lluis _a_ pamies.cat>
* @return \phpseclib\Math\BigInteger
*/
function bitwise_or($x)
{
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
$temp = new static();
$temp->value = gmp_or($this->value, $x->value);
return $this->_normalize($temp);
case self::MODE_BCMATH:
$left = $this->toBytes();
$right = $x->toBytes();
$length = max(strlen($left), strlen($right));
$left = str_pad($left, $length, chr(0), STR_PAD_LEFT);
$right = str_pad($right, $length, chr(0), STR_PAD_LEFT);
return $this->_normalize(new static($left | $right, 256));
}
$length = max(count($this->value), count($x->value));
$result = $this->copy();
$result->value = array_pad($result->value, $length, 0);
$x->value = array_pad($x->value, $length, 0);
for ($i = 0; $i < $length; ++$i) {
$result->value[$i]|= $x->value[$i];
}
return $this->_normalize($result);
}
/**
* Logical Exclusive-Or
*
* @param \phpseclib\Math\BigInteger $x
* @access public
* @internal Implemented per a request by Lluis Pamies i Juarez <lluis _a_ pamies.cat>
* @return \phpseclib\Math\BigInteger
*/
function bitwise_xor($x)
{
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
$temp = new static();
$temp->value = gmp_xor(gmp_abs($this->value), gmp_abs($x->value));
return $this->_normalize($temp);
case self::MODE_BCMATH:
$left = $this->toBytes();
$right = $x->toBytes();
$length = max(strlen($left), strlen($right));
$left = str_pad($left, $length, chr(0), STR_PAD_LEFT);
$right = str_pad($right, $length, chr(0), STR_PAD_LEFT);
return $this->_normalize(new static($left ^ $right, 256));
}
$length = max(count($this->value), count($x->value));
$result = $this->copy();
$result->is_negative = false;
$result->value = array_pad($result->value, $length, 0);
$x->value = array_pad($x->value, $length, 0);
for ($i = 0; $i < $length; ++$i) {
$result->value[$i]^= $x->value[$i];
}
return $this->_normalize($result);
}
/**
* Logical Not
*
* @access public
* @internal Implemented per a request by Lluis Pamies i Juarez <lluis _a_ pamies.cat>
* @return \phpseclib\Math\BigInteger
*/
function bitwise_not()
{
// calculuate "not" without regard to $this->precision
// (will always result in a smaller number. ie. ~1 isn't 1111 1110 - it's 0)
$temp = $this->toBytes();
if ($temp == '') {
return $this->_normalize(new static());
}
$pre_msb = decbin(ord($temp[0]));
$temp = ~$temp;
$msb = decbin(ord($temp[0]));
if (strlen($msb) == 8) {
$msb = substr($msb, strpos($msb, '0'));
}
$temp[0] = chr(bindec($msb));
// see if we need to add extra leading 1's
$current_bits = strlen($pre_msb) + 8 * strlen($temp) - 8;
$new_bits = $this->precision - $current_bits;
if ($new_bits <= 0) {
return $this->_normalize(new static($temp, 256));
}
// generate as many leading 1's as we need to.
$leading_ones = chr((1 << ($new_bits & 0x7)) - 1) . str_repeat(chr(0xFF), $new_bits >> 3);
$this->_base256_lshift($leading_ones, $current_bits);
$temp = str_pad($temp, strlen($leading_ones), chr(0), STR_PAD_LEFT);
return $this->_normalize(new static($leading_ones | $temp, 256));
}
/**
* Logical Right Shift
*
* Shifts BigInteger's by $shift bits, effectively dividing by 2**$shift.
*
* @param int $shift
* @return \phpseclib\Math\BigInteger
* @access public
* @internal The only version that yields any speed increases is the internal version.
*/
function bitwise_rightShift($shift)
{
$temp = new static();
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
static $two;
if (!isset($two)) {
$two = gmp_init('2');
}
$temp->value = gmp_div_q($this->value, gmp_pow($two, $shift));
break;
case self::MODE_BCMATH:
$temp->value = bcdiv($this->value, bcpow('2', $shift, 0), 0);
break;
default: // could just replace _lshift with this, but then all _lshift() calls would need to be rewritten
// and I don't want to do that...
$temp->value = $this->value;
$temp->_rshift($shift);
}
return $this->_normalize($temp);
}
/**
* Logical Left Shift
*
* Shifts BigInteger's by $shift bits, effectively multiplying by 2**$shift.
*
* @param int $shift
* @return \phpseclib\Math\BigInteger
* @access public
* @internal The only version that yields any speed increases is the internal version.
*/
function bitwise_leftShift($shift)
{
$temp = new static();
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
static $two;
if (!isset($two)) {
$two = gmp_init('2');
}
$temp->value = gmp_mul($this->value, gmp_pow($two, $shift));
break;
case self::MODE_BCMATH:
$temp->value = bcmul($this->value, bcpow('2', $shift, 0), 0);
break;
default: // could just replace _rshift with this, but then all _lshift() calls would need to be rewritten
// and I don't want to do that...
$temp->value = $this->value;
$temp->_lshift($shift);
}
return $this->_normalize($temp);
}
/**
* Logical Left Rotate
*
* Instead of the top x bits being dropped they're appended to the shifted bit string.
*
* @param int $shift
* @return \phpseclib\Math\BigInteger
* @access public
*/
function bitwise_leftRotate($shift)
{
$bits = $this->toBytes();
if ($this->precision > 0) {
$precision = $this->precision;
if (MATH_BIGINTEGER_MODE == self::MODE_BCMATH) {
$mask = $this->bitmask->subtract(new static(1));
$mask = $mask->toBytes();
} else {
$mask = $this->bitmask->toBytes();
}
} else {
$temp = ord($bits[0]);
for ($i = 0; $temp >> $i; ++$i) {
}
$precision = 8 * strlen($bits) - 8 + $i;
$mask = chr((1 << ($precision & 0x7)) - 1) . str_repeat(chr(0xFF), $precision >> 3);
}
if ($shift < 0) {
$shift+= $precision;
}
$shift%= $precision;
if (!$shift) {
return $this->copy();
}
$left = $this->bitwise_leftShift($shift);
$left = $left->bitwise_and(new static($mask, 256));
$right = $this->bitwise_rightShift($precision - $shift);
$result = MATH_BIGINTEGER_MODE != self::MODE_BCMATH ? $left->bitwise_or($right) : $left->add($right);
return $this->_normalize($result);
}
/**
* Logical Right Rotate
*
* Instead of the bottom x bits being dropped they're prepended to the shifted bit string.
*
* @param int $shift
* @return \phpseclib\Math\BigInteger
* @access public
*/
function bitwise_rightRotate($shift)
{
return $this->bitwise_leftRotate(-$shift);
}
/**
* Generates a random BigInteger
*
* Byte length is equal to $length. Uses \phpseclib\Crypt\Random if it's loaded and mt_rand if it's not.
*
* @param int $size
* @return \phpseclib\Math\BigInteger
* @access private
*/
function _random_number_helper($size)
{
if (class_exists('\phpseclib\Crypt\Random')) {
$random = Random::string($size);
} else {
$random = '';
if ($size & 1) {
$random.= chr(mt_rand(0, 255));
}
$blocks = $size >> 1;
for ($i = 0; $i < $blocks; ++$i) {
// mt_rand(-2147483648, 0x7FFFFFFF) always produces -2147483648 on some systems
$random.= pack('n', mt_rand(0, 0xFFFF));
}
}
return new static($random, 256);
}
/**
* Generate a random number
*
* Returns a random number between $min and $max where $min and $max
* can be defined using one of the two methods:
*
* $min->random($max)
* $max->random($min)
*
* @param \phpseclib\Math\BigInteger $arg1
* @param \phpseclib\Math\BigInteger $arg2
* @return \phpseclib\Math\BigInteger
* @access public
* @internal The API for creating random numbers used to be $a->random($min, $max), where $a was a BigInteger object.
* That method is still supported for BC purposes.
*/
function random($arg1, $arg2 = false)
{
if ($arg1 === false) {
return false;
}
if ($arg2 === false) {
$max = $arg1;
$min = $this;
} else {
$min = $arg1;
$max = $arg2;
}
$compare = $max->compare($min);
if (!$compare) {
return $this->_normalize($min);
} elseif ($compare < 0) {
// if $min is bigger then $max, swap $min and $max
$temp = $max;
$max = $min;
$min = $temp;
}
static $one;
if (!isset($one)) {
$one = new static(1);
}
$max = $max->subtract($min->subtract($one));
$size = strlen(ltrim($max->toBytes(), chr(0)));
/*
doing $random % $max doesn't work because some numbers will be more likely to occur than others.
eg. if $max is 140 and $random's max is 255 then that'd mean both $random = 5 and $random = 145
would produce 5 whereas the only value of random that could produce 139 would be 139. ie.
not all numbers would be equally likely. some would be more likely than others.
creating a whole new random number until you find one that is within the range doesn't work
because, for sufficiently small ranges, the likelihood that you'd get a number within that range
would be pretty small. eg. with $random's max being 255 and if your $max being 1 the probability
would be pretty high that $random would be greater than $max.
phpseclib works around this using the technique described here:
http://crypto.stackexchange.com/questions/5708/creating-a-small-number-from-a-cryptographically-secure-random-string
*/
$random_max = new static(chr(1) . str_repeat("\0", $size), 256);
$random = $this->_random_number_helper($size);
list($max_multiple) = $random_max->divide($max);
$max_multiple = $max_multiple->multiply($max);
while ($random->compare($max_multiple) >= 0) {
$random = $random->subtract($max_multiple);
$random_max = $random_max->subtract($max_multiple);
$random = $random->bitwise_leftShift(8);
$random = $random->add($this->_random_number_helper(1));
$random_max = $random_max->bitwise_leftShift(8);
list($max_multiple) = $random_max->divide($max);
$max_multiple = $max_multiple->multiply($max);
}
list(, $random) = $random->divide($max);
return $this->_normalize($random->add($min));
}
/**
* Generate a random prime number.
*
* If there's not a prime within the given range, false will be returned.
* If more than $timeout seconds have elapsed, give up and return false.
*
* @param \phpseclib\Math\BigInteger $arg1
* @param \phpseclib\Math\BigInteger $arg2
* @param int $timeout
* @return Math_BigInteger|false
* @access public
* @internal See {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap4.pdf#page=15 HAC 4.44}.
*/
function randomPrime($arg1, $arg2 = false, $timeout = false)
{
if ($arg1 === false) {
return false;
}
if ($arg2 === false) {
$max = $arg1;
$min = $this;
} else {
$min = $arg1;
$max = $arg2;
}
$compare = $max->compare($min);
if (!$compare) {
return $min->isPrime() ? $min : false;
} elseif ($compare < 0) {
// if $min is bigger then $max, swap $min and $max
$temp = $max;
$max = $min;
$min = $temp;
}
static $one, $two;
if (!isset($one)) {
$one = new static(1);
$two = new static(2);
}
$start = time();
$x = $this->random($min, $max);
// gmp_nextprime() requires PHP 5 >= 5.2.0 per <http://php.net/gmp-nextprime>.
if (MATH_BIGINTEGER_MODE == self::MODE_GMP && extension_loaded('gmp')) {
$p = new static();
$p->value = gmp_nextprime($x->value);
if ($p->compare($max) <= 0) {
return $p;
}
if (!$min->equals($x)) {
$x = $x->subtract($one);
}
return $x->randomPrime($min, $x);
}
if ($x->equals($two)) {
return $x;
}
$x->_make_odd();
if ($x->compare($max) > 0) {
// if $x > $max then $max is even and if $min == $max then no prime number exists between the specified range
if ($min->equals($max)) {
return false;
}
$x = $min->copy();
$x->_make_odd();
}
$initial_x = $x->copy();
while (true) {
if ($timeout !== false && time() - $start > $timeout) {
return false;
}
if ($x->isPrime()) {
return $x;
}
$x = $x->add($two);
if ($x->compare($max) > 0) {
$x = $min->copy();
if ($x->equals($two)) {
return $x;
}
$x->_make_odd();
}
if ($x->equals($initial_x)) {
return false;
}
}
}
/**
* Make the current number odd
*
* If the current number is odd it'll be unchanged. If it's even, one will be added to it.
*
* @see self::randomPrime()
* @access private
*/
function _make_odd()
{
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
gmp_setbit($this->value, 0);
break;
case self::MODE_BCMATH:
if ($this->value[strlen($this->value) - 1] % 2 == 0) {
$this->value = bcadd($this->value, '1');
}
break;
default:
$this->value[0] |= 1;
}
}
/**
* Checks a numer to see if it's prime
*
* Assuming the $t parameter is not set, this function has an error rate of 2**-80. The main motivation for the
* $t parameter is distributability. BigInteger::randomPrime() can be distributed across multiple pageloads
* on a website instead of just one.
*
* @param \phpseclib\Math\BigInteger $t
* @return bool
* @access public
* @internal Uses the
* {@link http://en.wikipedia.org/wiki/Miller%E2%80%93Rabin_primality_test Miller-Rabin primality test}. See
* {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap4.pdf#page=8 HAC 4.24}.
*/
function isPrime($t = false)
{
$length = strlen($this->toBytes());
if (!$t) {
// see HAC 4.49 "Note (controlling the error probability)"
// @codingStandardsIgnoreStart
if ($length >= 163) { $t = 2; } // floor(1300 / 8)
else if ($length >= 106) { $t = 3; } // floor( 850 / 8)
else if ($length >= 81 ) { $t = 4; } // floor( 650 / 8)
else if ($length >= 68 ) { $t = 5; } // floor( 550 / 8)
else if ($length >= 56 ) { $t = 6; } // floor( 450 / 8)
else if ($length >= 50 ) { $t = 7; } // floor( 400 / 8)
else if ($length >= 43 ) { $t = 8; } // floor( 350 / 8)
else if ($length >= 37 ) { $t = 9; } // floor( 300 / 8)
else if ($length >= 31 ) { $t = 12; } // floor( 250 / 8)
else if ($length >= 25 ) { $t = 15; } // floor( 200 / 8)
else if ($length >= 18 ) { $t = 18; } // floor( 150 / 8)
else { $t = 27; }
// @codingStandardsIgnoreEnd
}
// ie. gmp_testbit($this, 0)
// ie. isEven() or !isOdd()
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
return gmp_prob_prime($this->value, $t) != 0;
case self::MODE_BCMATH:
if ($this->value === '2') {
return true;
}
if ($this->value[strlen($this->value) - 1] % 2 == 0) {
return false;
}
break;
default:
if ($this->value == array(2)) {
return true;
}
if (~$this->value[0] & 1) {
return false;
}
}
static $primes, $zero, $one, $two;
if (!isset($primes)) {
$primes = array(
3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59,
61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137,
139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227,
229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313,
317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419,
421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, 509,
521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607, 613, 617,
619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, 709, 719, 727,
733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811, 821, 823, 827, 829,
839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911, 919, 929, 937, 941, 947,
953, 967, 971, 977, 983, 991, 997
);
if (MATH_BIGINTEGER_MODE != self::MODE_INTERNAL) {
for ($i = 0; $i < count($primes); ++$i) {
$primes[$i] = new static($primes[$i]);
}
}
$zero = new static();
$one = new static(1);
$two = new static(2);
}
if ($this->equals($one)) {
return false;
}
// see HAC 4.4.1 "Random search for probable primes"
if (MATH_BIGINTEGER_MODE != self::MODE_INTERNAL) {
foreach ($primes as $prime) {
list(, $r) = $this->divide($prime);
if ($r->equals($zero)) {
return $this->equals($prime);
}
}
} else {
$value = $this->value;
foreach ($primes as $prime) {
list(, $r) = $this->_divide_digit($value, $prime);
if (!$r) {
return count($value) == 1 && $value[0] == $prime;
}
}
}
$n = $this->copy();
$n_1 = $n->subtract($one);
$n_2 = $n->subtract($two);
$r = $n_1->copy();
$r_value = $r->value;
// ie. $s = gmp_scan1($n, 0) and $r = gmp_div_q($n, gmp_pow(gmp_init('2'), $s));
if (MATH_BIGINTEGER_MODE == self::MODE_BCMATH) {
$s = 0;
// if $n was 1, $r would be 0 and this would be an infinite loop, hence our $this->equals($one) check earlier
while ($r->value[strlen($r->value) - 1] % 2 == 0) {
$r->value = bcdiv($r->value, '2', 0);
++$s;
}
} else {
for ($i = 0, $r_length = count($r_value); $i < $r_length; ++$i) {
$temp = ~$r_value[$i] & 0xFFFFFF;
for ($j = 1; ($temp >> $j) & 1; ++$j) {
}
if ($j != 25) {
break;
}
}
$s = 26 * $i + $j;
$r->_rshift($s);
}
for ($i = 0; $i < $t; ++$i) {
$a = $this->random($two, $n_2);
$y = $a->modPow($r, $n);
if (!$y->equals($one) && !$y->equals($n_1)) {
for ($j = 1; $j < $s && !$y->equals($n_1); ++$j) {
$y = $y->modPow($two, $n);
if ($y->equals($one)) {
return false;
}
}
if (!$y->equals($n_1)) {
return false;
}
}
}
return true;
}
/**
* Logical Left Shift
*
* Shifts BigInteger's by $shift bits.
*
* @param int $shift
* @access private
*/
function _lshift($shift)
{
if ($shift == 0) {
return;
}
$num_digits = (int) ($shift / self::$base);
$shift %= self::$base;
$shift = 1 << $shift;
$carry = 0;
for ($i = 0; $i < count($this->value); ++$i) {
$temp = $this->value[$i] * $shift + $carry;
$carry = self::$base === 26 ? intval($temp / 0x4000000) : ($temp >> 31);
$this->value[$i] = (int) ($temp - $carry * self::$baseFull);
}
if ($carry) {
$this->value[count($this->value)] = $carry;
}
while ($num_digits--) {
array_unshift($this->value, 0);
}
}
/**
* Logical Right Shift
*
* Shifts BigInteger's by $shift bits.
*
* @param int $shift
* @access private
*/
function _rshift($shift)
{
if ($shift == 0) {
return;
}
$num_digits = (int) ($shift / self::$base);
$shift %= self::$base;
$carry_shift = self::$base - $shift;
$carry_mask = (1 << $shift) - 1;
if ($num_digits) {
$this->value = array_slice($this->value, $num_digits);
}
$carry = 0;
for ($i = count($this->value) - 1; $i >= 0; --$i) {
$temp = $this->value[$i] >> $shift | $carry;
$carry = ($this->value[$i] & $carry_mask) << $carry_shift;
$this->value[$i] = $temp;
}
$this->value = $this->_trim($this->value);
}
/**
* Normalize
*
* Removes leading zeros and truncates (if necessary) to maintain the appropriate precision
*
* @param \phpseclib\Math\BigInteger $result
* @return \phpseclib\Math\BigInteger
* @see self::_trim()
* @access private
*/
function _normalize($result)
{
$result->precision = $this->precision;
$result->bitmask = $this->bitmask;
switch (MATH_BIGINTEGER_MODE) {
case self::MODE_GMP:
if ($this->bitmask !== false) {
$flip = gmp_cmp($result->value, gmp_init(0)) < 0;
if ($flip) {
$result->value = gmp_neg($result->value);
}
$result->value = gmp_and($result->value, $result->bitmask->value);
if ($flip) {
$result->value = gmp_neg($result->value);
}
}
return $result;
case self::MODE_BCMATH:
if (!empty($result->bitmask->value)) {
$result->value = bcmod($result->value, $result->bitmask->value);
}
return $result;
}
$value = &$result->value;
if (!count($value)) {
$result->is_negative = false;
return $result;
}
$value = $this->_trim($value);
if (!empty($result->bitmask->value)) {
$length = min(count($value), count($this->bitmask->value));
$value = array_slice($value, 0, $length);
for ($i = 0; $i < $length; ++$i) {
$value[$i] = $value[$i] & $this->bitmask->value[$i];
}
}
return $result;
}
/**
* Trim
*
* Removes leading zeros
*
* @param array $value
* @return \phpseclib\Math\BigInteger
* @access private
*/
function _trim($value)
{
for ($i = count($value) - 1; $i >= 0; --$i) {
if ($value[$i]) {
break;
}
unset($value[$i]);
}
return $value;
}
/**
* Array Repeat
*
* @param array $input
* @param mixed $multiplier
* @return array
* @access private
*/
function _array_repeat($input, $multiplier)
{
return ($multiplier) ? array_fill(0, $multiplier, $input) : array();
}
/**
* Logical Left Shift
*
* Shifts binary strings $shift bits, essentially multiplying by 2**$shift.
*
* @param string $x (by reference)
* @param int $shift
* @return string
* @access private
*/
function _base256_lshift(&$x, $shift)
{
if ($shift == 0) {
return;
}
$num_bytes = $shift >> 3; // eg. floor($shift/8)
$shift &= 7; // eg. $shift % 8
$carry = 0;
for ($i = strlen($x) - 1; $i >= 0; --$i) {
$temp = ord($x[$i]) << $shift | $carry;
$x[$i] = chr($temp);
$carry = $temp >> 8;
}
$carry = ($carry != 0) ? chr($carry) : '';
$x = $carry . $x . str_repeat(chr(0), $num_bytes);
}
/**
* Logical Right Shift
*
* Shifts binary strings $shift bits, essentially dividing by 2**$shift and returning the remainder.
*
* @param string $x (by referenc)
* @param int $shift
* @return string
* @access private
*/
function _base256_rshift(&$x, $shift)
{
if ($shift == 0) {
$x = ltrim($x, chr(0));
return '';
}
$num_bytes = $shift >> 3; // eg. floor($shift/8)
$shift &= 7; // eg. $shift % 8
$remainder = '';
if ($num_bytes) {
$start = $num_bytes > strlen($x) ? -strlen($x) : -$num_bytes;
$remainder = substr($x, $start);
$x = substr($x, 0, -$num_bytes);
}
$carry = 0;
$carry_shift = 8 - $shift;
for ($i = 0; $i < strlen($x); ++$i) {
$temp = (ord($x[$i]) >> $shift) | $carry;
$carry = (ord($x[$i]) << $carry_shift) & 0xFF;
$x[$i] = chr($temp);
}
$x = ltrim($x, chr(0));
$remainder = chr($carry >> $carry_shift) . $remainder;
return ltrim($remainder, chr(0));
}
// one quirk about how the following functions are implemented is that PHP defines N to be an unsigned long
// at 32-bits, while java's longs are 64-bits.
/**
* Converts 32-bit integers to bytes.
*
* @param int $x
* @return string
* @access private
*/
function _int2bytes($x)
{
return ltrim(pack('N', $x), chr(0));
}
/**
* Converts bytes to 32-bit integers
*
* @param string $x
* @return int
* @access private
*/
function _bytes2int($x)
{
$temp = unpack('Nint', str_pad($x, 4, chr(0), STR_PAD_LEFT));
return $temp['int'];
}
/**
* DER-encode an integer
*
* The ability to DER-encode integers is needed to create RSA public keys for use with OpenSSL
*
* @see self::modPow()
* @access private
* @param int $length
* @return string
*/
function _encodeASN1Length($length)
{
if ($length <= 0x7F) {
return chr($length);
}
$temp = ltrim(pack('N', $length), chr(0));
return pack('Ca*', 0x80 | strlen($temp), $temp);
}
/**
* Single digit division
*
* Even if int64 is being used the division operator will return a float64 value
* if the dividend is not evenly divisible by the divisor. Since a float64 doesn't
* have the precision of int64 this is a problem so, when int64 is being used,
* we'll guarantee that the dividend is divisible by first subtracting the remainder.
*
* @access private
* @param int $x
* @param int $y
* @return int
*/
function _safe_divide($x, $y)
{
if (self::$base === 26) {
return (int) ($x / $y);
}
// self::$base === 31
return ($x - ($x % $y)) / $y;
}
}
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