| 1 |
<?php |
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ |
| 3 |
|
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/** |
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* Pure-PHP implementation of DES. |
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* |
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* Uses mcrypt, if available, and an internal implementation, otherwise. |
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* |
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* PHP versions 4 and 5 |
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* |
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* Useful resources are as follows: |
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* |
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* - {@link http://en.wikipedia.org/wiki/DES_supplementary_material Wikipedia: DES supplementary material} |
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* - {@link http://www.itl.nist.gov/fipspubs/fip46-2.htm FIPS 46-2 - (DES), Data Encryption Standard} |
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* - {@link http://www.cs.eku.edu/faculty/styer/460/Encrypt/JS-DES.html JavaScript DES Example} |
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* |
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* Here's a short example of how to use this library: |
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* <code> |
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* <?php |
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* include('Crypt/DES.php'); |
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* |
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* $des = new Crypt_DES(); |
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* |
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* $des->setKey('abcdefgh'); |
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* |
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* $size = 10 * 1024; |
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* $plaintext = ''; |
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* for ($i = 0; $i < $size; $i++) { |
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* $plaintext.= 'a'; |
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* } |
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* |
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* echo $des->decrypt($des->encrypt($plaintext)); |
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* ?> |
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* </code> |
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* |
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* LICENSE: Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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* THE SOFTWARE. |
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* |
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* @category Crypt |
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* @package Crypt_DES |
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* @author Jim Wigginton <terrafrost@php.net> |
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* @copyright MMVII Jim Wigginton |
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* @license http://www.opensource.org/licenses/mit-license.html MIT License |
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* @link http://phpseclib.sourceforge.net |
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*/ |
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|
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/**#@+ |
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* @access private |
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* @see Crypt_DES::_prepareKey() |
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* @see Crypt_DES::_processBlock() |
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*/ |
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/** |
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* Contains array_reverse($keys[CRYPT_DES_DECRYPT]) |
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*/ |
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define('CRYPT_DES_ENCRYPT', 0); |
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/** |
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* Contains array_reverse($keys[CRYPT_DES_ENCRYPT]) |
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*/ |
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define('CRYPT_DES_DECRYPT', 1); |
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/** |
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* Contains $keys[CRYPT_DES_ENCRYPT] as 1-dim array |
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*/ |
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define('CRYPT_DES_ENCRYPT_1DIM', 2); |
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/** |
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* Contains $keys[CRYPT_DES_DECRYPT] as 1-dim array |
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*/ |
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define('CRYPT_DES_DECRYPT_1DIM', 3); |
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/**#@-*/ |
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|
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/**#@+ |
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* @access public |
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* @see Crypt_DES::encrypt() |
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* @see Crypt_DES::decrypt() |
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*/ |
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/** |
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* Encrypt / decrypt using the Counter mode. |
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* |
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* Set to -1 since that's what Crypt/Random.php uses to index the CTR mode. |
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* |
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* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Counter_.28CTR.29 |
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*/ |
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define('CRYPT_DES_MODE_CTR', -1); |
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/** |
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* Encrypt / decrypt using the Electronic Code Book mode. |
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* |
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* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Electronic_codebook_.28ECB.29 |
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*/ |
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define('CRYPT_DES_MODE_ECB', 1); |
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/** |
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* Encrypt / decrypt using the Code Book Chaining mode. |
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* |
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* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher-block_chaining_.28CBC.29 |
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*/ |
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define('CRYPT_DES_MODE_CBC', 2); |
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/** |
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* Encrypt / decrypt using the Cipher Feedback mode. |
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* |
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* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher_feedback_.28CFB.29 |
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*/ |
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define('CRYPT_DES_MODE_CFB', 3); |
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/** |
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* Encrypt / decrypt using the Cipher Feedback mode. |
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* |
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* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Output_feedback_.28OFB.29 |
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*/ |
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define('CRYPT_DES_MODE_OFB', 4); |
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/**#@-*/ |
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|
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/**#@+ |
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* @access private |
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* @see Crypt_DES::Crypt_DES() |
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*/ |
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/** |
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* Toggles the internal implementation |
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*/ |
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define('CRYPT_DES_MODE_INTERNAL', 1); |
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/** |
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* Toggles the mcrypt implementation |
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*/ |
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define('CRYPT_DES_MODE_MCRYPT', 2); |
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/**#@-*/ |
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|
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/** |
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* Pure-PHP implementation of DES. |
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* |
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* @author Jim Wigginton <terrafrost@php.net> |
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* @version 0.1.0 |
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* @access public |
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* @package Crypt_DES |
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*/ |
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class Crypt_DES { |
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/** |
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* The Key Schedule |
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* |
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* @see Crypt_DES::setKey() |
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* @var Array |
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* @access private |
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*/ |
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var $keys = "\0\0\0\0\0\0\0\0"; |
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|
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/** |
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* The Encryption Mode |
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* |
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* @see Crypt_DES::Crypt_DES() |
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* @var Integer |
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* @access private |
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*/ |
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var $mode; |
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|
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/** |
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* Continuous Buffer status |
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* |
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* @see Crypt_DES::enableContinuousBuffer() |
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* @var Boolean |
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* @access private |
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*/ |
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var $continuousBuffer = false; |
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|
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/** |
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* Padding status |
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* |
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* @see Crypt_DES::enablePadding() |
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* @var Boolean |
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* @access private |
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*/ |
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var $padding = true; |
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|
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/** |
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* The Initialization Vector |
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* |
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* @see Crypt_DES::setIV() |
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* @var String |
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* @access private |
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*/ |
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var $iv = "\0\0\0\0\0\0\0\0"; |
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|
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/** |
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* A "sliding" Initialization Vector |
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* |
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* @see Crypt_DES::enableContinuousBuffer() |
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* @var String |
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* @access private |
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*/ |
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var $encryptIV = "\0\0\0\0\0\0\0\0"; |
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|
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/** |
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* A "sliding" Initialization Vector |
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* |
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* @see Crypt_DES::enableContinuousBuffer() |
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* @var String |
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* @access private |
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*/ |
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var $decryptIV = "\0\0\0\0\0\0\0\0"; |
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|
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/** |
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* mcrypt resource for encryption |
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* |
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* The mcrypt resource can be recreated every time something needs to be created or it can be created just once. |
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* Since mcrypt operates in continuous mode, by default, it'll need to be recreated when in non-continuous mode. |
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* |
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* @see Crypt_DES::encrypt() |
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* @var String |
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* @access private |
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*/ |
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var $enmcrypt; |
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|
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/** |
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* mcrypt resource for decryption |
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* |
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* The mcrypt resource can be recreated every time something needs to be created or it can be created just once. |
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* Since mcrypt operates in continuous mode, by default, it'll need to be recreated when in non-continuous mode. |
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* |
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* @see Crypt_DES::decrypt() |
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* @var String |
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* @access private |
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*/ |
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var $demcrypt; |
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|
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/** |
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* Does the enmcrypt resource need to be (re)initialized? |
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* |
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* @see Crypt_DES::setKey() |
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* @see Crypt_DES::setIV() |
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* @var Boolean |
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* @access private |
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*/ |
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var $enchanged = true; |
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|
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/** |
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* Does the demcrypt resource need to be (re)initialized? |
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* |
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* @see Crypt_DES::setKey() |
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* @see Crypt_DES::setIV() |
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* @var Boolean |
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* @access private |
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*/ |
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var $dechanged = true; |
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|
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/** |
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* Is the mode one that is paddable? |
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* |
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* @see Crypt_DES::Crypt_DES() |
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* @var Boolean |
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* @access private |
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*/ |
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var $paddable = false; |
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|
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/** |
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* Encryption buffer for CTR, OFB and CFB modes |
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* |
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* @see Crypt_DES::encrypt() |
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* @var Array |
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* @access private |
| 269 |
*/ |
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var $enbuffer = array('encrypted' => '', 'xor' => '', 'pos' => 0, 'enmcrypt_init' => true); |
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|
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/** |
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* Decryption buffer for CTR, OFB and CFB modes |
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* |
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* @see Crypt_DES::decrypt() |
| 276 |
* @var Array |
| 277 |
* @access private |
| 278 |
*/ |
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var $debuffer = array('ciphertext' => '', 'xor' => '', 'pos' => 0, 'demcrypt_init' => true); |
| 280 |
|
| 281 |
/** |
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* mcrypt resource for CFB mode |
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* |
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* @see Crypt_DES::encrypt() |
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* @see Crypt_DES::decrypt() |
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* @var String |
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* @access private |
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*/ |
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var $ecb; |
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|
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/** |
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* Performance-optimized callback function for en/decrypt() |
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* |
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* @var Callback |
| 295 |
* @access private |
| 296 |
*/ |
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var $inline_crypt; |
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|
| 299 |
/** |
| 300 |
* Holds whether performance-optimized $inline_crypt should be used or not. |
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* |
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* @var Boolean |
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* @access private |
| 304 |
*/ |
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var $use_inline_crypt = false; |
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|
| 307 |
/** |
| 308 |
* Shuffle table. |
| 309 |
* |
| 310 |
* For each byte value index, the entry holds an 8-byte string |
| 311 |
* with each byte containing all bits in the same state as the |
| 312 |
* corresponding bit in the index value. |
| 313 |
* |
| 314 |
* @see Crypt_DES::_processBlock() |
| 315 |
* @see Crypt_DES::_prepareKey() |
| 316 |
* @var Array |
| 317 |
* @access private |
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*/ |
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var $shuffle = array( |
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"\x00\x00\x00\x00\x00\x00\x00\x00", "\x00\x00\x00\x00\x00\x00\x00\xFF", |
| 321 |
"\x00\x00\x00\x00\x00\x00\xFF\x00", "\x00\x00\x00\x00\x00\x00\xFF\xFF", |
| 322 |
"\x00\x00\x00\x00\x00\xFF\x00\x00", "\x00\x00\x00\x00\x00\xFF\x00\xFF", |
| 323 |
"\x00\x00\x00\x00\x00\xFF\xFF\x00", "\x00\x00\x00\x00\x00\xFF\xFF\xFF", |
| 324 |
"\x00\x00\x00\x00\xFF\x00\x00\x00", "\x00\x00\x00\x00\xFF\x00\x00\xFF", |
| 325 |
"\x00\x00\x00\x00\xFF\x00\xFF\x00", "\x00\x00\x00\x00\xFF\x00\xFF\xFF", |
| 326 |
"\x00\x00\x00\x00\xFF\xFF\x00\x00", "\x00\x00\x00\x00\xFF\xFF\x00\xFF", |
| 327 |
"\x00\x00\x00\x00\xFF\xFF\xFF\x00", "\x00\x00\x00\x00\xFF\xFF\xFF\xFF", |
| 328 |
"\x00\x00\x00\xFF\x00\x00\x00\x00", "\x00\x00\x00\xFF\x00\x00\x00\xFF", |
| 329 |
"\x00\x00\x00\xFF\x00\x00\xFF\x00", "\x00\x00\x00\xFF\x00\x00\xFF\xFF", |
| 330 |
"\x00\x00\x00\xFF\x00\xFF\x00\x00", "\x00\x00\x00\xFF\x00\xFF\x00\xFF", |
| 331 |
"\x00\x00\x00\xFF\x00\xFF\xFF\x00", "\x00\x00\x00\xFF\x00\xFF\xFF\xFF", |
| 332 |
"\x00\x00\x00\xFF\xFF\x00\x00\x00", "\x00\x00\x00\xFF\xFF\x00\x00\xFF", |
| 333 |
"\x00\x00\x00\xFF\xFF\x00\xFF\x00", "\x00\x00\x00\xFF\xFF\x00\xFF\xFF", |
| 334 |
"\x00\x00\x00\xFF\xFF\xFF\x00\x00", "\x00\x00\x00\xFF\xFF\xFF\x00\xFF", |
| 335 |
"\x00\x00\x00\xFF\xFF\xFF\xFF\x00", "\x00\x00\x00\xFF\xFF\xFF\xFF\xFF", |
| 336 |
"\x00\x00\xFF\x00\x00\x00\x00\x00", "\x00\x00\xFF\x00\x00\x00\x00\xFF", |
| 337 |
"\x00\x00\xFF\x00\x00\x00\xFF\x00", "\x00\x00\xFF\x00\x00\x00\xFF\xFF", |
| 338 |
"\x00\x00\xFF\x00\x00\xFF\x00\x00", "\x00\x00\xFF\x00\x00\xFF\x00\xFF", |
| 339 |
"\x00\x00\xFF\x00\x00\xFF\xFF\x00", "\x00\x00\xFF\x00\x00\xFF\xFF\xFF", |
| 340 |
"\x00\x00\xFF\x00\xFF\x00\x00\x00", "\x00\x00\xFF\x00\xFF\x00\x00\xFF", |
| 341 |
"\x00\x00\xFF\x00\xFF\x00\xFF\x00", "\x00\x00\xFF\x00\xFF\x00\xFF\xFF", |
| 342 |
"\x00\x00\xFF\x00\xFF\xFF\x00\x00", "\x00\x00\xFF\x00\xFF\xFF\x00\xFF", |
| 343 |
"\x00\x00\xFF\x00\xFF\xFF\xFF\x00", "\x00\x00\xFF\x00\xFF\xFF\xFF\xFF", |
| 344 |
"\x00\x00\xFF\xFF\x00\x00\x00\x00", "\x00\x00\xFF\xFF\x00\x00\x00\xFF", |
| 345 |
"\x00\x00\xFF\xFF\x00\x00\xFF\x00", "\x00\x00\xFF\xFF\x00\x00\xFF\xFF", |
| 346 |
"\x00\x00\xFF\xFF\x00\xFF\x00\x00", "\x00\x00\xFF\xFF\x00\xFF\x00\xFF", |
| 347 |
"\x00\x00\xFF\xFF\x00\xFF\xFF\x00", "\x00\x00\xFF\xFF\x00\xFF\xFF\xFF", |
| 348 |
"\x00\x00\xFF\xFF\xFF\x00\x00\x00", "\x00\x00\xFF\xFF\xFF\x00\x00\xFF", |
| 349 |
"\x00\x00\xFF\xFF\xFF\x00\xFF\x00", "\x00\x00\xFF\xFF\xFF\x00\xFF\xFF", |
| 350 |
"\x00\x00\xFF\xFF\xFF\xFF\x00\x00", "\x00\x00\xFF\xFF\xFF\xFF\x00\xFF", |
| 351 |
"\x00\x00\xFF\xFF\xFF\xFF\xFF\x00", "\x00\x00\xFF\xFF\xFF\xFF\xFF\xFF", |
| 352 |
"\x00\xFF\x00\x00\x00\x00\x00\x00", "\x00\xFF\x00\x00\x00\x00\x00\xFF", |
| 353 |
"\x00\xFF\x00\x00\x00\x00\xFF\x00", "\x00\xFF\x00\x00\x00\x00\xFF\xFF", |
| 354 |
"\x00\xFF\x00\x00\x00\xFF\x00\x00", "\x00\xFF\x00\x00\x00\xFF\x00\xFF", |
| 355 |
"\x00\xFF\x00\x00\x00\xFF\xFF\x00", "\x00\xFF\x00\x00\x00\xFF\xFF\xFF", |
| 356 |
"\x00\xFF\x00\x00\xFF\x00\x00\x00", "\x00\xFF\x00\x00\xFF\x00\x00\xFF", |
| 357 |
"\x00\xFF\x00\x00\xFF\x00\xFF\x00", "\x00\xFF\x00\x00\xFF\x00\xFF\xFF", |
| 358 |
"\x00\xFF\x00\x00\xFF\xFF\x00\x00", "\x00\xFF\x00\x00\xFF\xFF\x00\xFF", |
| 359 |
"\x00\xFF\x00\x00\xFF\xFF\xFF\x00", "\x00\xFF\x00\x00\xFF\xFF\xFF\xFF", |
| 360 |
"\x00\xFF\x00\xFF\x00\x00\x00\x00", "\x00\xFF\x00\xFF\x00\x00\x00\xFF", |
| 361 |
"\x00\xFF\x00\xFF\x00\x00\xFF\x00", "\x00\xFF\x00\xFF\x00\x00\xFF\xFF", |
| 362 |
"\x00\xFF\x00\xFF\x00\xFF\x00\x00", "\x00\xFF\x00\xFF\x00\xFF\x00\xFF", |
| 363 |
"\x00\xFF\x00\xFF\x00\xFF\xFF\x00", "\x00\xFF\x00\xFF\x00\xFF\xFF\xFF", |
| 364 |
"\x00\xFF\x00\xFF\xFF\x00\x00\x00", "\x00\xFF\x00\xFF\xFF\x00\x00\xFF", |
| 365 |
"\x00\xFF\x00\xFF\xFF\x00\xFF\x00", "\x00\xFF\x00\xFF\xFF\x00\xFF\xFF", |
| 366 |
"\x00\xFF\x00\xFF\xFF\xFF\x00\x00", "\x00\xFF\x00\xFF\xFF\xFF\x00\xFF", |
| 367 |
"\x00\xFF\x00\xFF\xFF\xFF\xFF\x00", "\x00\xFF\x00\xFF\xFF\xFF\xFF\xFF", |
| 368 |
"\x00\xFF\xFF\x00\x00\x00\x00\x00", "\x00\xFF\xFF\x00\x00\x00\x00\xFF", |
| 369 |
"\x00\xFF\xFF\x00\x00\x00\xFF\x00", "\x00\xFF\xFF\x00\x00\x00\xFF\xFF", |
| 370 |
"\x00\xFF\xFF\x00\x00\xFF\x00\x00", "\x00\xFF\xFF\x00\x00\xFF\x00\xFF", |
| 371 |
"\x00\xFF\xFF\x00\x00\xFF\xFF\x00", "\x00\xFF\xFF\x00\x00\xFF\xFF\xFF", |
| 372 |
"\x00\xFF\xFF\x00\xFF\x00\x00\x00", "\x00\xFF\xFF\x00\xFF\x00\x00\xFF", |
| 373 |
"\x00\xFF\xFF\x00\xFF\x00\xFF\x00", "\x00\xFF\xFF\x00\xFF\x00\xFF\xFF", |
| 374 |
"\x00\xFF\xFF\x00\xFF\xFF\x00\x00", "\x00\xFF\xFF\x00\xFF\xFF\x00\xFF", |
| 375 |
"\x00\xFF\xFF\x00\xFF\xFF\xFF\x00", "\x00\xFF\xFF\x00\xFF\xFF\xFF\xFF", |
| 376 |
"\x00\xFF\xFF\xFF\x00\x00\x00\x00", "\x00\xFF\xFF\xFF\x00\x00\x00\xFF", |
| 377 |
"\x00\xFF\xFF\xFF\x00\x00\xFF\x00", "\x00\xFF\xFF\xFF\x00\x00\xFF\xFF", |
| 378 |
"\x00\xFF\xFF\xFF\x00\xFF\x00\x00", "\x00\xFF\xFF\xFF\x00\xFF\x00\xFF", |
| 379 |
"\x00\xFF\xFF\xFF\x00\xFF\xFF\x00", "\x00\xFF\xFF\xFF\x00\xFF\xFF\xFF", |
| 380 |
"\x00\xFF\xFF\xFF\xFF\x00\x00\x00", "\x00\xFF\xFF\xFF\xFF\x00\x00\xFF", |
| 381 |
"\x00\xFF\xFF\xFF\xFF\x00\xFF\x00", "\x00\xFF\xFF\xFF\xFF\x00\xFF\xFF", |
| 382 |
"\x00\xFF\xFF\xFF\xFF\xFF\x00\x00", "\x00\xFF\xFF\xFF\xFF\xFF\x00\xFF", |
| 383 |
"\x00\xFF\xFF\xFF\xFF\xFF\xFF\x00", "\x00\xFF\xFF\xFF\xFF\xFF\xFF\xFF", |
| 384 |
"\xFF\x00\x00\x00\x00\x00\x00\x00", "\xFF\x00\x00\x00\x00\x00\x00\xFF", |
| 385 |
"\xFF\x00\x00\x00\x00\x00\xFF\x00", "\xFF\x00\x00\x00\x00\x00\xFF\xFF", |
| 386 |
"\xFF\x00\x00\x00\x00\xFF\x00\x00", "\xFF\x00\x00\x00\x00\xFF\x00\xFF", |
| 387 |
"\xFF\x00\x00\x00\x00\xFF\xFF\x00", "\xFF\x00\x00\x00\x00\xFF\xFF\xFF", |
| 388 |
"\xFF\x00\x00\x00\xFF\x00\x00\x00", "\xFF\x00\x00\x00\xFF\x00\x00\xFF", |
| 389 |
"\xFF\x00\x00\x00\xFF\x00\xFF\x00", "\xFF\x00\x00\x00\xFF\x00\xFF\xFF", |
| 390 |
"\xFF\x00\x00\x00\xFF\xFF\x00\x00", "\xFF\x00\x00\x00\xFF\xFF\x00\xFF", |
| 391 |
"\xFF\x00\x00\x00\xFF\xFF\xFF\x00", "\xFF\x00\x00\x00\xFF\xFF\xFF\xFF", |
| 392 |
"\xFF\x00\x00\xFF\x00\x00\x00\x00", "\xFF\x00\x00\xFF\x00\x00\x00\xFF", |
| 393 |
"\xFF\x00\x00\xFF\x00\x00\xFF\x00", "\xFF\x00\x00\xFF\x00\x00\xFF\xFF", |
| 394 |
"\xFF\x00\x00\xFF\x00\xFF\x00\x00", "\xFF\x00\x00\xFF\x00\xFF\x00\xFF", |
| 395 |
"\xFF\x00\x00\xFF\x00\xFF\xFF\x00", "\xFF\x00\x00\xFF\x00\xFF\xFF\xFF", |
| 396 |
"\xFF\x00\x00\xFF\xFF\x00\x00\x00", "\xFF\x00\x00\xFF\xFF\x00\x00\xFF", |
| 397 |
"\xFF\x00\x00\xFF\xFF\x00\xFF\x00", "\xFF\x00\x00\xFF\xFF\x00\xFF\xFF", |
| 398 |
"\xFF\x00\x00\xFF\xFF\xFF\x00\x00", "\xFF\x00\x00\xFF\xFF\xFF\x00\xFF", |
| 399 |
"\xFF\x00\x00\xFF\xFF\xFF\xFF\x00", "\xFF\x00\x00\xFF\xFF\xFF\xFF\xFF", |
| 400 |
"\xFF\x00\xFF\x00\x00\x00\x00\x00", "\xFF\x00\xFF\x00\x00\x00\x00\xFF", |
| 401 |
"\xFF\x00\xFF\x00\x00\x00\xFF\x00", "\xFF\x00\xFF\x00\x00\x00\xFF\xFF", |
| 402 |
"\xFF\x00\xFF\x00\x00\xFF\x00\x00", "\xFF\x00\xFF\x00\x00\xFF\x00\xFF", |
| 403 |
"\xFF\x00\xFF\x00\x00\xFF\xFF\x00", "\xFF\x00\xFF\x00\x00\xFF\xFF\xFF", |
| 404 |
"\xFF\x00\xFF\x00\xFF\x00\x00\x00", "\xFF\x00\xFF\x00\xFF\x00\x00\xFF", |
| 405 |
"\xFF\x00\xFF\x00\xFF\x00\xFF\x00", "\xFF\x00\xFF\x00\xFF\x00\xFF\xFF", |
| 406 |
"\xFF\x00\xFF\x00\xFF\xFF\x00\x00", "\xFF\x00\xFF\x00\xFF\xFF\x00\xFF", |
| 407 |
"\xFF\x00\xFF\x00\xFF\xFF\xFF\x00", "\xFF\x00\xFF\x00\xFF\xFF\xFF\xFF", |
| 408 |
"\xFF\x00\xFF\xFF\x00\x00\x00\x00", "\xFF\x00\xFF\xFF\x00\x00\x00\xFF", |
| 409 |
"\xFF\x00\xFF\xFF\x00\x00\xFF\x00", "\xFF\x00\xFF\xFF\x00\x00\xFF\xFF", |
| 410 |
"\xFF\x00\xFF\xFF\x00\xFF\x00\x00", "\xFF\x00\xFF\xFF\x00\xFF\x00\xFF", |
| 411 |
"\xFF\x00\xFF\xFF\x00\xFF\xFF\x00", "\xFF\x00\xFF\xFF\x00\xFF\xFF\xFF", |
| 412 |
"\xFF\x00\xFF\xFF\xFF\x00\x00\x00", "\xFF\x00\xFF\xFF\xFF\x00\x00\xFF", |
| 413 |
"\xFF\x00\xFF\xFF\xFF\x00\xFF\x00", "\xFF\x00\xFF\xFF\xFF\x00\xFF\xFF", |
| 414 |
"\xFF\x00\xFF\xFF\xFF\xFF\x00\x00", "\xFF\x00\xFF\xFF\xFF\xFF\x00\xFF", |
| 415 |
"\xFF\x00\xFF\xFF\xFF\xFF\xFF\x00", "\xFF\x00\xFF\xFF\xFF\xFF\xFF\xFF", |
| 416 |
"\xFF\xFF\x00\x00\x00\x00\x00\x00", "\xFF\xFF\x00\x00\x00\x00\x00\xFF", |
| 417 |
"\xFF\xFF\x00\x00\x00\x00\xFF\x00", "\xFF\xFF\x00\x00\x00\x00\xFF\xFF", |
| 418 |
"\xFF\xFF\x00\x00\x00\xFF\x00\x00", "\xFF\xFF\x00\x00\x00\xFF\x00\xFF", |
| 419 |
"\xFF\xFF\x00\x00\x00\xFF\xFF\x00", "\xFF\xFF\x00\x00\x00\xFF\xFF\xFF", |
| 420 |
"\xFF\xFF\x00\x00\xFF\x00\x00\x00", "\xFF\xFF\x00\x00\xFF\x00\x00\xFF", |
| 421 |
"\xFF\xFF\x00\x00\xFF\x00\xFF\x00", "\xFF\xFF\x00\x00\xFF\x00\xFF\xFF", |
| 422 |
"\xFF\xFF\x00\x00\xFF\xFF\x00\x00", "\xFF\xFF\x00\x00\xFF\xFF\x00\xFF", |
| 423 |
"\xFF\xFF\x00\x00\xFF\xFF\xFF\x00", "\xFF\xFF\x00\x00\xFF\xFF\xFF\xFF", |
| 424 |
"\xFF\xFF\x00\xFF\x00\x00\x00\x00", "\xFF\xFF\x00\xFF\x00\x00\x00\xFF", |
| 425 |
"\xFF\xFF\x00\xFF\x00\x00\xFF\x00", "\xFF\xFF\x00\xFF\x00\x00\xFF\xFF", |
| 426 |
"\xFF\xFF\x00\xFF\x00\xFF\x00\x00", "\xFF\xFF\x00\xFF\x00\xFF\x00\xFF", |
| 427 |
"\xFF\xFF\x00\xFF\x00\xFF\xFF\x00", "\xFF\xFF\x00\xFF\x00\xFF\xFF\xFF", |
| 428 |
"\xFF\xFF\x00\xFF\xFF\x00\x00\x00", "\xFF\xFF\x00\xFF\xFF\x00\x00\xFF", |
| 429 |
"\xFF\xFF\x00\xFF\xFF\x00\xFF\x00", "\xFF\xFF\x00\xFF\xFF\x00\xFF\xFF", |
| 430 |
"\xFF\xFF\x00\xFF\xFF\xFF\x00\x00", "\xFF\xFF\x00\xFF\xFF\xFF\x00\xFF", |
| 431 |
"\xFF\xFF\x00\xFF\xFF\xFF\xFF\x00", "\xFF\xFF\x00\xFF\xFF\xFF\xFF\xFF", |
| 432 |
"\xFF\xFF\xFF\x00\x00\x00\x00\x00", "\xFF\xFF\xFF\x00\x00\x00\x00\xFF", |
| 433 |
"\xFF\xFF\xFF\x00\x00\x00\xFF\x00", "\xFF\xFF\xFF\x00\x00\x00\xFF\xFF", |
| 434 |
"\xFF\xFF\xFF\x00\x00\xFF\x00\x00", "\xFF\xFF\xFF\x00\x00\xFF\x00\xFF", |
| 435 |
"\xFF\xFF\xFF\x00\x00\xFF\xFF\x00", "\xFF\xFF\xFF\x00\x00\xFF\xFF\xFF", |
| 436 |
"\xFF\xFF\xFF\x00\xFF\x00\x00\x00", "\xFF\xFF\xFF\x00\xFF\x00\x00\xFF", |
| 437 |
"\xFF\xFF\xFF\x00\xFF\x00\xFF\x00", "\xFF\xFF\xFF\x00\xFF\x00\xFF\xFF", |
| 438 |
"\xFF\xFF\xFF\x00\xFF\xFF\x00\x00", "\xFF\xFF\xFF\x00\xFF\xFF\x00\xFF", |
| 439 |
"\xFF\xFF\xFF\x00\xFF\xFF\xFF\x00", "\xFF\xFF\xFF\x00\xFF\xFF\xFF\xFF", |
| 440 |
"\xFF\xFF\xFF\xFF\x00\x00\x00\x00", "\xFF\xFF\xFF\xFF\x00\x00\x00\xFF", |
| 441 |
"\xFF\xFF\xFF\xFF\x00\x00\xFF\x00", "\xFF\xFF\xFF\xFF\x00\x00\xFF\xFF", |
| 442 |
"\xFF\xFF\xFF\xFF\x00\xFF\x00\x00", "\xFF\xFF\xFF\xFF\x00\xFF\x00\xFF", |
| 443 |
"\xFF\xFF\xFF\xFF\x00\xFF\xFF\x00", "\xFF\xFF\xFF\xFF\x00\xFF\xFF\xFF", |
| 444 |
"\xFF\xFF\xFF\xFF\xFF\x00\x00\x00", "\xFF\xFF\xFF\xFF\xFF\x00\x00\xFF", |
| 445 |
"\xFF\xFF\xFF\xFF\xFF\x00\xFF\x00", "\xFF\xFF\xFF\xFF\xFF\x00\xFF\xFF", |
| 446 |
"\xFF\xFF\xFF\xFF\xFF\xFF\x00\x00", "\xFF\xFF\xFF\xFF\xFF\xFF\x00\xFF", |
| 447 |
"\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x00", "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF" |
| 448 |
); |
| 449 |
|
| 450 |
/** |
| 451 |
* IP mapping helper table. |
| 452 |
* |
| 453 |
* Indexing this table with each source byte performs the initial bit permutation. |
| 454 |
* |
| 455 |
* @var Array |
| 456 |
* @access private |
| 457 |
*/ |
| 458 |
var $ipmap = array( |
| 459 |
0x00, 0x10, 0x01, 0x11, 0x20, 0x30, 0x21, 0x31, |
| 460 |
0x02, 0x12, 0x03, 0x13, 0x22, 0x32, 0x23, 0x33, |
| 461 |
0x40, 0x50, 0x41, 0x51, 0x60, 0x70, 0x61, 0x71, |
| 462 |
0x42, 0x52, 0x43, 0x53, 0x62, 0x72, 0x63, 0x73, |
| 463 |
0x04, 0x14, 0x05, 0x15, 0x24, 0x34, 0x25, 0x35, |
| 464 |
0x06, 0x16, 0x07, 0x17, 0x26, 0x36, 0x27, 0x37, |
| 465 |
0x44, 0x54, 0x45, 0x55, 0x64, 0x74, 0x65, 0x75, |
| 466 |
0x46, 0x56, 0x47, 0x57, 0x66, 0x76, 0x67, 0x77, |
| 467 |
0x80, 0x90, 0x81, 0x91, 0xA0, 0xB0, 0xA1, 0xB1, |
| 468 |
0x82, 0x92, 0x83, 0x93, 0xA2, 0xB2, 0xA3, 0xB3, |
| 469 |
0xC0, 0xD0, 0xC1, 0xD1, 0xE0, 0xF0, 0xE1, 0xF1, |
| 470 |
0xC2, 0xD2, 0xC3, 0xD3, 0xE2, 0xF2, 0xE3, 0xF3, |
| 471 |
0x84, 0x94, 0x85, 0x95, 0xA4, 0xB4, 0xA5, 0xB5, |
| 472 |
0x86, 0x96, 0x87, 0x97, 0xA6, 0xB6, 0xA7, 0xB7, |
| 473 |
0xC4, 0xD4, 0xC5, 0xD5, 0xE4, 0xF4, 0xE5, 0xF5, |
| 474 |
0xC6, 0xD6, 0xC7, 0xD7, 0xE6, 0xF6, 0xE7, 0xF7, |
| 475 |
0x08, 0x18, 0x09, 0x19, 0x28, 0x38, 0x29, 0x39, |
| 476 |
0x0A, 0x1A, 0x0B, 0x1B, 0x2A, 0x3A, 0x2B, 0x3B, |
| 477 |
0x48, 0x58, 0x49, 0x59, 0x68, 0x78, 0x69, 0x79, |
| 478 |
0x4A, 0x5A, 0x4B, 0x5B, 0x6A, 0x7A, 0x6B, 0x7B, |
| 479 |
0x0C, 0x1C, 0x0D, 0x1D, 0x2C, 0x3C, 0x2D, 0x3D, |
| 480 |
0x0E, 0x1E, 0x0F, 0x1F, 0x2E, 0x3E, 0x2F, 0x3F, |
| 481 |
0x4C, 0x5C, 0x4D, 0x5D, 0x6C, 0x7C, 0x6D, 0x7D, |
| 482 |
0x4E, 0x5E, 0x4F, 0x5F, 0x6E, 0x7E, 0x6F, 0x7F, |
| 483 |
0x88, 0x98, 0x89, 0x99, 0xA8, 0xB8, 0xA9, 0xB9, |
| 484 |
0x8A, 0x9A, 0x8B, 0x9B, 0xAA, 0xBA, 0xAB, 0xBB, |
| 485 |
0xC8, 0xD8, 0xC9, 0xD9, 0xE8, 0xF8, 0xE9, 0xF9, |
| 486 |
0xCA, 0xDA, 0xCB, 0xDB, 0xEA, 0xFA, 0xEB, 0xFB, |
| 487 |
0x8C, 0x9C, 0x8D, 0x9D, 0xAC, 0xBC, 0xAD, 0xBD, |
| 488 |
0x8E, 0x9E, 0x8F, 0x9F, 0xAE, 0xBE, 0xAF, 0xBF, |
| 489 |
0xCC, 0xDC, 0xCD, 0xDD, 0xEC, 0xFC, 0xED, 0xFD, |
| 490 |
0xCE, 0xDE, 0xCF, 0xDF, 0xEE, 0xFE, 0xEF, 0xFF |
| 491 |
); |
| 492 |
|
| 493 |
/** |
| 494 |
* Inverse IP mapping helper table. |
| 495 |
* Indexing this table with a byte value reverses the bit order. |
| 496 |
* |
| 497 |
* @var Array |
| 498 |
* @access private |
| 499 |
*/ |
| 500 |
var $invipmap = array( |
| 501 |
0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0, |
| 502 |
0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0, |
| 503 |
0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8, |
| 504 |
0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8, |
| 505 |
0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4, |
| 506 |
0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4, |
| 507 |
0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC, |
| 508 |
0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC, |
| 509 |
0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2, |
| 510 |
0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2, |
| 511 |
0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA, |
| 512 |
0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA, |
| 513 |
0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6, |
| 514 |
0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6, |
| 515 |
0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE, |
| 516 |
0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE, |
| 517 |
0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1, |
| 518 |
0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1, |
| 519 |
0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9, |
| 520 |
0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9, |
| 521 |
0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5, |
| 522 |
0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5, |
| 523 |
0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED, |
| 524 |
0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD, |
| 525 |
0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3, |
| 526 |
0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3, |
| 527 |
0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB, |
| 528 |
0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB, |
| 529 |
0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7, |
| 530 |
0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7, |
| 531 |
0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF, |
| 532 |
0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF |
| 533 |
); |
| 534 |
|
| 535 |
/** |
| 536 |
* Pre-permuted S-box1 |
| 537 |
* |
| 538 |
* Each box ($sbox1-$sbox8) has been vectorized, then each value pre-permuted using the |
| 539 |
* P table: concatenation can then be replaced by exclusive ORs. |
| 540 |
* |
| 541 |
* @var Array |
| 542 |
* @access private |
| 543 |
*/ |
| 544 |
var $sbox1 = array( |
| 545 |
0x00808200, 0x00000000, 0x00008000, 0x00808202, |
| 546 |
0x00808002, 0x00008202, 0x00000002, 0x00008000, |
| 547 |
0x00000200, 0x00808200, 0x00808202, 0x00000200, |
| 548 |
0x00800202, 0x00808002, 0x00800000, 0x00000002, |
| 549 |
0x00000202, 0x00800200, 0x00800200, 0x00008200, |
| 550 |
0x00008200, 0x00808000, 0x00808000, 0x00800202, |
| 551 |
0x00008002, 0x00800002, 0x00800002, 0x00008002, |
| 552 |
0x00000000, 0x00000202, 0x00008202, 0x00800000, |
| 553 |
0x00008000, 0x00808202, 0x00000002, 0x00808000, |
| 554 |
0x00808200, 0x00800000, 0x00800000, 0x00000200, |
| 555 |
0x00808002, 0x00008000, 0x00008200, 0x00800002, |
| 556 |
0x00000200, 0x00000002, 0x00800202, 0x00008202, |
| 557 |
0x00808202, 0x00008002, 0x00808000, 0x00800202, |
| 558 |
0x00800002, 0x00000202, 0x00008202, 0x00808200, |
| 559 |
0x00000202, 0x00800200, 0x00800200, 0x00000000, |
| 560 |
0x00008002, 0x00008200, 0x00000000, 0x00808002 |
| 561 |
); |
| 562 |
|
| 563 |
/** |
| 564 |
* Pre-permuted S-box2 |
| 565 |
* |
| 566 |
* @var Array |
| 567 |
* @access private |
| 568 |
*/ |
| 569 |
var $sbox2 = array( |
| 570 |
0x40084010, 0x40004000, 0x00004000, 0x00084010, |
| 571 |
0x00080000, 0x00000010, 0x40080010, 0x40004010, |
| 572 |
0x40000010, 0x40084010, 0x40084000, 0x40000000, |
| 573 |
0x40004000, 0x00080000, 0x00000010, 0x40080010, |
| 574 |
0x00084000, 0x00080010, 0x40004010, 0x00000000, |
| 575 |
0x40000000, 0x00004000, 0x00084010, 0x40080000, |
| 576 |
0x00080010, 0x40000010, 0x00000000, 0x00084000, |
| 577 |
0x00004010, 0x40084000, 0x40080000, 0x00004010, |
| 578 |
0x00000000, 0x00084010, 0x40080010, 0x00080000, |
| 579 |
0x40004010, 0x40080000, 0x40084000, 0x00004000, |
| 580 |
0x40080000, 0x40004000, 0x00000010, 0x40084010, |
| 581 |
0x00084010, 0x00000010, 0x00004000, 0x40000000, |
| 582 |
0x00004010, 0x40084000, 0x00080000, 0x40000010, |
| 583 |
0x00080010, 0x40004010, 0x40000010, 0x00080010, |
| 584 |
0x00084000, 0x00000000, 0x40004000, 0x00004010, |
| 585 |
0x40000000, 0x40080010, 0x40084010, 0x00084000 |
| 586 |
); |
| 587 |
|
| 588 |
/** |
| 589 |
* Pre-permuted S-box3 |
| 590 |
* |
| 591 |
* @var Array |
| 592 |
* @access private |
| 593 |
*/ |
| 594 |
var $sbox3 = array( |
| 595 |
0x00000104, 0x04010100, 0x00000000, 0x04010004, |
| 596 |
0x04000100, 0x00000000, 0x00010104, 0x04000100, |
| 597 |
0x00010004, 0x04000004, 0x04000004, 0x00010000, |
| 598 |
0x04010104, 0x00010004, 0x04010000, 0x00000104, |
| 599 |
0x04000000, 0x00000004, 0x04010100, 0x00000100, |
| 600 |
0x00010100, 0x04010000, 0x04010004, 0x00010104, |
| 601 |
0x04000104, 0x00010100, 0x00010000, 0x04000104, |
| 602 |
0x00000004, 0x04010104, 0x00000100, 0x04000000, |
| 603 |
0x04010100, 0x04000000, 0x00010004, 0x00000104, |
| 604 |
0x00010000, 0x04010100, 0x04000100, 0x00000000, |
| 605 |
0x00000100, 0x00010004, 0x04010104, 0x04000100, |
| 606 |
0x04000004, 0x00000100, 0x00000000, 0x04010004, |
| 607 |
0x04000104, 0x00010000, 0x04000000, 0x04010104, |
| 608 |
0x00000004, 0x00010104, 0x00010100, 0x04000004, |
| 609 |
0x04010000, 0x04000104, 0x00000104, 0x04010000, |
| 610 |
0x00010104, 0x00000004, 0x04010004, 0x00010100 |
| 611 |
); |
| 612 |
|
| 613 |
/** |
| 614 |
* Pre-permuted S-box4 |
| 615 |
* |
| 616 |
* @var Array |
| 617 |
* @access private |
| 618 |
*/ |
| 619 |
var $sbox4 = array( |
| 620 |
0x80401000, 0x80001040, 0x80001040, 0x00000040, |
| 621 |
0x00401040, 0x80400040, 0x80400000, 0x80001000, |
| 622 |
0x00000000, 0x00401000, 0x00401000, 0x80401040, |
| 623 |
0x80000040, 0x00000000, 0x00400040, 0x80400000, |
| 624 |
0x80000000, 0x00001000, 0x00400000, 0x80401000, |
| 625 |
0x00000040, 0x00400000, 0x80001000, 0x00001040, |
| 626 |
0x80400040, 0x80000000, 0x00001040, 0x00400040, |
| 627 |
0x00001000, 0x00401040, 0x80401040, 0x80000040, |
| 628 |
0x00400040, 0x80400000, 0x00401000, 0x80401040, |
| 629 |
0x80000040, 0x00000000, 0x00000000, 0x00401000, |
| 630 |
0x00001040, 0x00400040, 0x80400040, 0x80000000, |
| 631 |
0x80401000, 0x80001040, 0x80001040, 0x00000040, |
| 632 |
0x80401040, 0x80000040, 0x80000000, 0x00001000, |
| 633 |
0x80400000, 0x80001000, 0x00401040, 0x80400040, |
| 634 |
0x80001000, 0x00001040, 0x00400000, 0x80401000, |
| 635 |
0x00000040, 0x00400000, 0x00001000, 0x00401040 |
| 636 |
); |
| 637 |
|
| 638 |
/** |
| 639 |
* Pre-permuted S-box5 |
| 640 |
* |
| 641 |
* @var Array |
| 642 |
* @access private |
| 643 |
*/ |
| 644 |
var $sbox5 = array( |
| 645 |
0x00000080, 0x01040080, 0x01040000, 0x21000080, |
| 646 |
0x00040000, 0x00000080, 0x20000000, 0x01040000, |
| 647 |
0x20040080, 0x00040000, 0x01000080, 0x20040080, |
| 648 |
0x21000080, 0x21040000, 0x00040080, 0x20000000, |
| 649 |
0x01000000, 0x20040000, 0x20040000, 0x00000000, |
| 650 |
0x20000080, 0x21040080, 0x21040080, 0x01000080, |
| 651 |
0x21040000, 0x20000080, 0x00000000, 0x21000000, |
| 652 |
0x01040080, 0x01000000, 0x21000000, 0x00040080, |
| 653 |
0x00040000, 0x21000080, 0x00000080, 0x01000000, |
| 654 |
0x20000000, 0x01040000, 0x21000080, 0x20040080, |
| 655 |
0x01000080, 0x20000000, 0x21040000, 0x01040080, |
| 656 |
0x20040080, 0x00000080, 0x01000000, 0x21040000, |
| 657 |
0x21040080, 0x00040080, 0x21000000, 0x21040080, |
| 658 |
0x01040000, 0x00000000, 0x20040000, 0x21000000, |
| 659 |
0x00040080, 0x01000080, 0x20000080, 0x00040000, |
| 660 |
0x00000000, 0x20040000, 0x01040080, 0x20000080 |
| 661 |
); |
| 662 |
|
| 663 |
/** |
| 664 |
* Pre-permuted S-box6 |
| 665 |
* |
| 666 |
* @var Array |
| 667 |
* @access private |
| 668 |
*/ |
| 669 |
var $sbox6 = array( |
| 670 |
0x10000008, 0x10200000, 0x00002000, 0x10202008, |
| 671 |
0x10200000, 0x00000008, 0x10202008, 0x00200000, |
| 672 |
0x10002000, 0x00202008, 0x00200000, 0x10000008, |
| 673 |
0x00200008, 0x10002000, 0x10000000, 0x00002008, |
| 674 |
0x00000000, 0x00200008, 0x10002008, 0x00002000, |
| 675 |
0x00202000, 0x10002008, 0x00000008, 0x10200008, |
| 676 |
0x10200008, 0x00000000, 0x00202008, 0x10202000, |
| 677 |
0x00002008, 0x00202000, 0x10202000, 0x10000000, |
| 678 |
0x10002000, 0x00000008, 0x10200008, 0x00202000, |
| 679 |
0x10202008, 0x00200000, 0x00002008, 0x10000008, |
| 680 |
0x00200000, 0x10002000, 0x10000000, 0x00002008, |
| 681 |
0x10000008, 0x10202008, 0x00202000, 0x10200000, |
| 682 |
0x00202008, 0x10202000, 0x00000000, 0x10200008, |
| 683 |
0x00000008, 0x00002000, 0x10200000, 0x00202008, |
| 684 |
0x00002000, 0x00200008, 0x10002008, 0x00000000, |
| 685 |
0x10202000, 0x10000000, 0x00200008, 0x10002008 |
| 686 |
); |
| 687 |
|
| 688 |
/** |
| 689 |
* Pre-permuted S-box7 |
| 690 |
* |
| 691 |
* @var Array |
| 692 |
* @access private |
| 693 |
*/ |
| 694 |
var $sbox7 = array( |
| 695 |
0x00100000, 0x02100001, 0x02000401, 0x00000000, |
| 696 |
0x00000400, 0x02000401, 0x00100401, 0x02100400, |
| 697 |
0x02100401, 0x00100000, 0x00000000, 0x02000001, |
| 698 |
0x00000001, 0x02000000, 0x02100001, 0x00000401, |
| 699 |
0x02000400, 0x00100401, 0x00100001, 0x02000400, |
| 700 |
0x02000001, 0x02100000, 0x02100400, 0x00100001, |
| 701 |
0x02100000, 0x00000400, 0x00000401, 0x02100401, |
| 702 |
0x00100400, 0x00000001, 0x02000000, 0x00100400, |
| 703 |
0x02000000, 0x00100400, 0x00100000, 0x02000401, |
| 704 |
0x02000401, 0x02100001, 0x02100001, 0x00000001, |
| 705 |
0x00100001, 0x02000000, 0x02000400, 0x00100000, |
| 706 |
0x02100400, 0x00000401, 0x00100401, 0x02100400, |
| 707 |
0x00000401, 0x02000001, 0x02100401, 0x02100000, |
| 708 |
0x00100400, 0x00000000, 0x00000001, 0x02100401, |
| 709 |
0x00000000, 0x00100401, 0x02100000, 0x00000400, |
| 710 |
0x02000001, 0x02000400, 0x00000400, 0x00100001 |
| 711 |
); |
| 712 |
|
| 713 |
/** |
| 714 |
* Pre-permuted S-box8 |
| 715 |
* |
| 716 |
* @var Array |
| 717 |
* @access private |
| 718 |
*/ |
| 719 |
var $sbox8 = array( |
| 720 |
0x08000820, 0x00000800, 0x00020000, 0x08020820, |
| 721 |
0x08000000, 0x08000820, 0x00000020, 0x08000000, |
| 722 |
0x00020020, 0x08020000, 0x08020820, 0x00020800, |
| 723 |
0x08020800, 0x00020820, 0x00000800, 0x00000020, |
| 724 |
0x08020000, 0x08000020, 0x08000800, 0x00000820, |
| 725 |
0x00020800, 0x00020020, 0x08020020, 0x08020800, |
| 726 |
0x00000820, 0x00000000, 0x00000000, 0x08020020, |
| 727 |
0x08000020, 0x08000800, 0x00020820, 0x00020000, |
| 728 |
0x00020820, 0x00020000, 0x08020800, 0x00000800, |
| 729 |
0x00000020, 0x08020020, 0x00000800, 0x00020820, |
| 730 |
0x08000800, 0x00000020, 0x08000020, 0x08020000, |
| 731 |
0x08020020, 0x08000000, 0x00020000, 0x08000820, |
| 732 |
0x00000000, 0x08020820, 0x00020020, 0x08000020, |
| 733 |
0x08020000, 0x08000800, 0x08000820, 0x00000000, |
| 734 |
0x08020820, 0x00020800, 0x00020800, 0x00000820, |
| 735 |
0x00000820, 0x00020020, 0x08000000, 0x08020800 |
| 736 |
); |
| 737 |
|
| 738 |
/** |
| 739 |
* Default Constructor. |
| 740 |
* |
| 741 |
* Determines whether or not the mcrypt extension should be used. $mode should only, at present, be |
| 742 |
* CRYPT_DES_MODE_ECB or CRYPT_DES_MODE_CBC. If not explictly set, CRYPT_DES_MODE_CBC will be used. |
| 743 |
* |
| 744 |
* @param optional Integer $mode |
| 745 |
* @return Crypt_DES |
| 746 |
* @access public |
| 747 |
*/ |
| 748 |
function Crypt_DES($mode = CRYPT_DES_MODE_CBC) |
| 749 |
{ |
| 750 |
if ( !defined('CRYPT_DES_MODE') ) { |
| 751 |
switch (true) { |
| 752 |
case extension_loaded('mcrypt') && in_array('des', mcrypt_list_algorithms()): |
| 753 |
define('CRYPT_DES_MODE', CRYPT_DES_MODE_MCRYPT); |
| 754 |
break; |
| 755 |
default: |
| 756 |
define('CRYPT_DES_MODE', CRYPT_DES_MODE_INTERNAL); |
| 757 |
} |
| 758 |
} |
| 759 |
|
| 760 |
switch ( CRYPT_DES_MODE ) { |
| 761 |
case CRYPT_DES_MODE_MCRYPT: |
| 762 |
switch ($mode) { |
| 763 |
case CRYPT_DES_MODE_ECB: |
| 764 |
$this->paddable = true; |
| 765 |
$this->mode = MCRYPT_MODE_ECB; |
| 766 |
break; |
| 767 |
case CRYPT_DES_MODE_CTR: |
| 768 |
$this->mode = 'ctr'; |
| 769 |
//$this->mode = in_array('ctr', mcrypt_list_modes()) ? 'ctr' : CRYPT_DES_MODE_CTR; |
| 770 |
break; |
| 771 |
case CRYPT_DES_MODE_CFB: |
| 772 |
$this->mode = 'ncfb'; |
| 773 |
$this->ecb = mcrypt_module_open(MCRYPT_DES, '', MCRYPT_MODE_ECB, ''); |
| 774 |
break; |
| 775 |
case CRYPT_DES_MODE_OFB: |
| 776 |
$this->mode = MCRYPT_MODE_NOFB; |
| 777 |
break; |
| 778 |
case CRYPT_DES_MODE_CBC: |
| 779 |
default: |
| 780 |
$this->paddable = true; |
| 781 |
$this->mode = MCRYPT_MODE_CBC; |
| 782 |
} |
| 783 |
$this->enmcrypt = mcrypt_module_open(MCRYPT_DES, '', $this->mode, ''); |
| 784 |
$this->demcrypt = mcrypt_module_open(MCRYPT_DES, '', $this->mode, ''); |
| 785 |
|
| 786 |
break; |
| 787 |
default: |
| 788 |
switch ($mode) { |
| 789 |
case CRYPT_DES_MODE_ECB: |
| 790 |
case CRYPT_DES_MODE_CBC: |
| 791 |
$this->paddable = true; |
| 792 |
$this->mode = $mode; |
| 793 |
break; |
| 794 |
case CRYPT_DES_MODE_CTR: |
| 795 |
case CRYPT_DES_MODE_CFB: |
| 796 |
case CRYPT_DES_MODE_OFB: |
| 797 |
$this->mode = $mode; |
| 798 |
break; |
| 799 |
default: |
| 800 |
$this->paddable = true; |
| 801 |
$this->mode = CRYPT_DES_MODE_CBC; |
| 802 |
} |
| 803 |
if (function_exists('create_function') && is_callable('create_function')) { |
| 804 |
$this->inline_crypt_setup(); |
| 805 |
$this->use_inline_crypt = true; |
| 806 |
} |
| 807 |
} |
| 808 |
} |
| 809 |
|
| 810 |
/** |
| 811 |
* Sets the key. |
| 812 |
* |
| 813 |
* Keys can be of any length. DES, itself, uses 64-bit keys (eg. strlen($key) == 8), however, we |
| 814 |
* only use the first eight, if $key has more then eight characters in it, and pad $key with the |
| 815 |
* null byte if it is less then eight characters long. |
| 816 |
* |
| 817 |
* DES also requires that every eighth bit be a parity bit, however, we'll ignore that. |
| 818 |
* |
| 819 |
* If the key is not explicitly set, it'll be assumed to be all zero's. |
| 820 |
* |
| 821 |
* @access public |
| 822 |
* @param String $key |
| 823 |
*/ |
| 824 |
function setKey($key) |
| 825 |
{ |
| 826 |
$this->keys = ( CRYPT_DES_MODE == CRYPT_DES_MODE_MCRYPT ) ? str_pad(substr($key, 0, 8), 8, chr(0)) : $this->_prepareKey($key); |
| 827 |
$this->enchanged = true; |
| 828 |
$this->dechanged = true; |
| 829 |
} |
| 830 |
|
| 831 |
/** |
| 832 |
* Sets the password. |
| 833 |
* |
| 834 |
* Depending on what $method is set to, setPassword()'s (optional) parameters are as follows: |
| 835 |
* {@link http://en.wikipedia.org/wiki/PBKDF2 pbkdf2}: |
| 836 |
* $hash, $salt, $count |
| 837 |
* |
| 838 |
* @param String $password |
| 839 |
* @param optional String $method |
| 840 |
* @access public |
| 841 |
*/ |
| 842 |
function setPassword($password, $method = 'pbkdf2') |
| 843 |
{ |
| 844 |
$key = ''; |
| 845 |
|
| 846 |
switch ($method) { |
| 847 |
default: // 'pbkdf2' |
| 848 |
list(, , $hash, $salt, $count) = func_get_args(); |
| 849 |
if (!isset($hash)) { |
| 850 |
$hash = 'sha1'; |
| 851 |
} |
| 852 |
// WPA and WPA2 use the SSID as the salt |
| 853 |
if (!isset($salt)) { |
| 854 |
$salt = 'phpseclib/salt'; |
| 855 |
} |
| 856 |
// RFC2898#section-4.2 uses 1,000 iterations by default |
| 857 |
// WPA and WPA2 use 4,096. |
| 858 |
if (!isset($count)) { |
| 859 |
$count = 1000; |
| 860 |
} |
| 861 |
|
| 862 |
if (!class_exists('Crypt_Hash')) { |
| 863 |
require_once('Crypt/Hash.php'); |
| 864 |
} |
| 865 |
|
| 866 |
$i = 1; |
| 867 |
while (strlen($key) < 8) { // $dkLen == 8 |
| 868 |
//$dk.= $this->_pbkdf($password, $salt, $count, $i++); |
| 869 |
$hmac = new Crypt_Hash(); |
| 870 |
$hmac->setHash($hash); |
| 871 |
$hmac->setKey($password); |
| 872 |
$f = $u = $hmac->hash($salt . pack('N', $i++)); |
| 873 |
for ($j = 2; $j <= $count; $j++) { |
| 874 |
$u = $hmac->hash($u); |
| 875 |
$f^= $u; |
| 876 |
} |
| 877 |
$key.= $f; |
| 878 |
} |
| 879 |
} |
| 880 |
|
| 881 |
$this->setKey($key); |
| 882 |
} |
| 883 |
|
| 884 |
/** |
| 885 |
* Sets the initialization vector. (optional) |
| 886 |
* |
| 887 |
* SetIV is not required when CRYPT_DES_MODE_ECB is being used. If not explictly set, it'll be assumed |
| 888 |
* to be all zero's. |
| 889 |
* |
| 890 |
* @access public |
| 891 |
* @param String $iv |
| 892 |
*/ |
| 893 |
function setIV($iv) |
| 894 |
{ |
| 895 |
$this->encryptIV = $this->decryptIV = $this->iv = str_pad(substr($iv, 0, 8), 8, chr(0)); |
| 896 |
$this->enchanged = true; |
| 897 |
$this->dechanged = true; |
| 898 |
} |
| 899 |
|
| 900 |
/** |
| 901 |
* Generate CTR XOR encryption key |
| 902 |
* |
| 903 |
* Encrypt the output of this and XOR it against the ciphertext / plaintext to get the |
| 904 |
* plaintext / ciphertext in CTR mode. |
| 905 |
* |
| 906 |
* @see Crypt_DES::decrypt() |
| 907 |
* @see Crypt_DES::encrypt() |
| 908 |
* @access public |
| 909 |
* @param String $iv |
| 910 |
*/ |
| 911 |
function _generate_xor(&$iv) |
| 912 |
{ |
| 913 |
$xor = $iv; |
| 914 |
for ($j = 4; $j <= 8; $j+=4) { |
| 915 |
$temp = substr($iv, -$j, 4); |
| 916 |
switch ($temp) { |
| 917 |
case "\xFF\xFF\xFF\xFF": |
| 918 |
$iv = substr_replace($iv, "\x00\x00\x00\x00", -$j, 4); |
| 919 |
break; |
| 920 |
case "\x7F\xFF\xFF\xFF": |
| 921 |
$iv = substr_replace($iv, "\x80\x00\x00\x00", -$j, 4); |
| 922 |
break 2; |
| 923 |
default: |
| 924 |
extract(unpack('Ncount', $temp)); |
| 925 |
$iv = substr_replace($iv, pack('N', $count + 1), -$j, 4); |
| 926 |
break 2; |
| 927 |
} |
| 928 |
} |
| 929 |
|
| 930 |
return $xor; |
| 931 |
} |
| 932 |
|
| 933 |
/** |
| 934 |
* Encrypts a message. |
| 935 |
* |
| 936 |
* $plaintext will be padded with up to 8 additional bytes. Other DES implementations may or may not pad in the |
| 937 |
* same manner. Other common approaches to padding and the reasons why it's necessary are discussed in the following |
| 938 |
* URL: |
| 939 |
* |
| 940 |
* {@link http://www.di-mgt.com.au/cryptopad.html http://www.di-mgt.com.au/cryptopad.html} |
| 941 |
* |
| 942 |
* An alternative to padding is to, separately, send the length of the file. This is what SSH, in fact, does. |
| 943 |
* strlen($plaintext) will still need to be a multiple of 8, however, arbitrary values can be added to make it that |
| 944 |
* length. |
| 945 |
* |
| 946 |
* @see Crypt_DES::decrypt() |
| 947 |
* @access public |
| 948 |
* @param String $plaintext |
| 949 |
*/ |
| 950 |
function encrypt($plaintext) |
| 951 |
{ |
| 952 |
if ($this->paddable) { |
| 953 |
$plaintext = $this->_pad($plaintext); |
| 954 |
} |
| 955 |
|
| 956 |
if ( CRYPT_DES_MODE == CRYPT_DES_MODE_MCRYPT ) { |
| 957 |
if ($this->enchanged) { |
| 958 |
mcrypt_generic_init($this->enmcrypt, $this->keys, $this->encryptIV); |
| 959 |
if ($this->mode == 'ncfb') { |
| 960 |
mcrypt_generic_init($this->ecb, $this->keys, "\0\0\0\0\0\0\0\0"); |
| 961 |
} |
| 962 |
$this->enchanged = false; |
| 963 |
} |
| 964 |
|
| 965 |
if ($this->mode != 'ncfb' || !$this->continuousBuffer) { |
| 966 |
$ciphertext = mcrypt_generic($this->enmcrypt, $plaintext); |
| 967 |
} else { |
| 968 |
$iv = &$this->encryptIV; |
| 969 |
$pos = &$this->enbuffer['pos']; |
| 970 |
$len = strlen($plaintext); |
| 971 |
$ciphertext = ''; |
| 972 |
$i = 0; |
| 973 |
if ($pos) { |
| 974 |
$orig_pos = $pos; |
| 975 |
$max = 8 - $pos; |
| 976 |
if ($len >= $max) { |
| 977 |
$i = $max; |
| 978 |
$len-= $max; |
| 979 |
$pos = 0; |
| 980 |
} else { |
| 981 |
$i = $len; |
| 982 |
$pos+= $len; |
| 983 |
$len = 0; |
| 984 |
} |
| 985 |
$ciphertext = substr($iv, $orig_pos) ^ $plaintext; |
| 986 |
$iv = substr_replace($iv, $ciphertext, $orig_pos, $i); |
| 987 |
$this->enbuffer['enmcrypt_init'] = true; |
| 988 |
} |
| 989 |
if ($len >= 8) { |
| 990 |
if ($this->enbuffer['enmcrypt_init'] === false || $len > 600) { |
| 991 |
if ($this->enbuffer['enmcrypt_init'] === true) { |
| 992 |
mcrypt_generic_init($this->enmcrypt, $this->keys, $iv); |
| 993 |
$this->enbuffer['enmcrypt_init'] = false; |
| 994 |
} |
| 995 |
$ciphertext.= mcrypt_generic($this->enmcrypt, substr($plaintext, $i, $len - $len % 8)); |
| 996 |
$iv = substr($ciphertext, -8); |
| 997 |
$len%= 8; |
| 998 |
} else { |
| 999 |
while ($len >= 8) { |
| 1000 |
$iv = mcrypt_generic($this->ecb, $iv) ^ substr($plaintext, $i, 8); |
| 1001 |
$ciphertext.= $iv; |
| 1002 |
$len-= 8; |
| 1003 |
$i+= 8; |
| 1004 |
} |
| 1005 |
} |
| 1006 |
} |
| 1007 |
if ($len) { |
| 1008 |
$iv = mcrypt_generic($this->ecb, $iv); |
| 1009 |
$block = $iv ^ substr($plaintext, -$len); |
| 1010 |
$iv = substr_replace($iv, $block, 0, $len); |
| 1011 |
$ciphertext.= $block; |
| 1012 |
$pos = $len; |
| 1013 |
} |
| 1014 |
return $ciphertext; |
| 1015 |
} |
| 1016 |
|
| 1017 |
if (!$this->continuousBuffer) { |
| 1018 |
mcrypt_generic_init($this->enmcrypt, $this->keys, $this->encryptIV); |
| 1019 |
} |
| 1020 |
|
| 1021 |
return $ciphertext; |
| 1022 |
} |
| 1023 |
|
| 1024 |
if (!is_array($this->keys)) { |
| 1025 |
$this->keys = $this->_prepareKey("\0\0\0\0\0\0\0\0"); |
| 1026 |
} |
| 1027 |
|
| 1028 |
if ($this->use_inline_crypt) { |
| 1029 |
$inline = $this->inline_crypt; |
| 1030 |
return $inline('encrypt', $this, $plaintext); |
| 1031 |
} |
| 1032 |
|
| 1033 |
$buffer = &$this->enbuffer; |
| 1034 |
$continuousBuffer = $this->continuousBuffer; |
| 1035 |
$ciphertext = ''; |
| 1036 |
switch ($this->mode) { |
| 1037 |
case CRYPT_DES_MODE_ECB: |
| 1038 |
for ($i = 0; $i < strlen($plaintext); $i+=8) { |
| 1039 |
$ciphertext.= $this->_processBlock(substr($plaintext, $i, 8), CRYPT_DES_ENCRYPT); |
| 1040 |
} |
| 1041 |
break; |
| 1042 |
case CRYPT_DES_MODE_CBC: |
| 1043 |
$xor = $this->encryptIV; |
| 1044 |
for ($i = 0; $i < strlen($plaintext); $i+=8) { |
| 1045 |
$block = substr($plaintext, $i, 8); |
| 1046 |
$block = $this->_processBlock($block ^ $xor, CRYPT_DES_ENCRYPT); |
| 1047 |
$xor = $block; |
| 1048 |
$ciphertext.= $block; |
| 1049 |
} |
| 1050 |
if ($this->continuousBuffer) { |
| 1051 |
$this->encryptIV = $xor; |
| 1052 |
} |
| 1053 |
break; |
| 1054 |
case CRYPT_DES_MODE_CTR: |
| 1055 |
$xor = $this->encryptIV; |
| 1056 |
if (strlen($buffer['encrypted'])) { |
| 1057 |
for ($i = 0; $i < strlen($plaintext); $i+=8) { |
| 1058 |
$block = substr($plaintext, $i, 8); |
| 1059 |
if (strlen($block) > strlen($buffer['encrypted'])) { |
| 1060 |
$buffer['encrypted'].= $this->_processBlock($this->_generate_xor($xor), CRYPT_DES_ENCRYPT); |
| 1061 |
} |
| 1062 |
$key = $this->_string_shift($buffer['encrypted']); |
| 1063 |
$ciphertext.= $block ^ $key; |
| 1064 |
} |
| 1065 |
} else { |
| 1066 |
for ($i = 0; $i < strlen($plaintext); $i+=8) { |
| 1067 |
$block = substr($plaintext, $i, 8); |
| 1068 |
$key = $this->_processBlock($this->_generate_xor($xor), CRYPT_DES_ENCRYPT); |
| 1069 |
$ciphertext.= $block ^ $key; |
| 1070 |
} |
| 1071 |
} |
| 1072 |
if ($this->continuousBuffer) { |
| 1073 |
$this->encryptIV = $xor; |
| 1074 |
if ($start = strlen($plaintext) & 7) { |
| 1075 |
$buffer['encrypted'] = substr($key, $start) . $buffer['encrypted']; |
| 1076 |
} |
| 1077 |
} |
| 1078 |
break; |
| 1079 |
case CRYPT_DES_MODE_CFB: |
| 1080 |
if ($this->continuousBuffer) { |
| 1081 |
$iv = &$this->encryptIV; |
| 1082 |
$pos = &$buffer['pos']; |
| 1083 |
} else { |
| 1084 |
$iv = $this->encryptIV; |
| 1085 |
$pos = 0; |
| 1086 |
} |
| 1087 |
$len = strlen($plaintext); |
| 1088 |
$i = 0; |
| 1089 |
if ($pos) { |
| 1090 |
$orig_pos = $pos; |
| 1091 |
$max = 8 - $pos; |
| 1092 |
if ($len >= $max) { |
| 1093 |
$i = $max; |
| 1094 |
$len-= $max; |
| 1095 |
$pos = 0; |
| 1096 |
} else { |
| 1097 |
$i = $len; |
| 1098 |
$pos+= $len; |
| 1099 |
$len = 0; |
| 1100 |
} |
| 1101 |
$ciphertext = substr($iv, $orig_pos) ^ $plaintext; |
| 1102 |
$iv = substr_replace($iv, $ciphertext, $orig_pos, $i); |
| 1103 |
} |
| 1104 |
while ($len >= 8) { |
| 1105 |
$iv = $this->_processBlock($iv, CRYPT_DES_ENCRYPT) ^ substr($plaintext, $i, 8); |
| 1106 |
$ciphertext.= $iv; |
| 1107 |
$len-= 8; |
| 1108 |
$i+= 8; |
| 1109 |
} |
| 1110 |
if ($len) { |
| 1111 |
$iv = $this->_processBlock($iv, CRYPT_DES_ENCRYPT); |
| 1112 |
$block = $iv ^ substr($plaintext, $i); |
| 1113 |
$iv = substr_replace($iv, $block, 0, $len); |
| 1114 |
$ciphertext.= $block; |
| 1115 |
$pos = $len; |
| 1116 |
} |
| 1117 |
return $ciphertext; |
| 1118 |
case CRYPT_DES_MODE_OFB: |
| 1119 |
$xor = $this->encryptIV; |
| 1120 |
if (strlen($buffer['xor'])) { |
| 1121 |
for ($i = 0; $i < strlen($plaintext); $i+=8) { |
| 1122 |
$block = substr($plaintext, $i, 8); |
| 1123 |
if (strlen($block) > strlen($buffer['xor'])) { |
| 1124 |
$xor = $this->_processBlock($xor, CRYPT_DES_ENCRYPT); |
| 1125 |
$buffer['xor'].= $xor; |
| 1126 |
} |
| 1127 |
$key = $this->_string_shift($buffer['xor']); |
| 1128 |
$ciphertext.= $block ^ $key; |
| 1129 |
} |
| 1130 |
} else { |
| 1131 |
for ($i = 0; $i < strlen($plaintext); $i+=8) { |
| 1132 |
$xor = $this->_processBlock($xor, CRYPT_DES_ENCRYPT); |
| 1133 |
$ciphertext.= substr($plaintext, $i, 8) ^ $xor; |
| 1134 |
} |
| 1135 |
$key = $xor; |
| 1136 |
} |
| 1137 |
if ($this->continuousBuffer) { |
| 1138 |
$this->encryptIV = $xor; |
| 1139 |
if ($start = strlen($plaintext) & 7) { |
| 1140 |
$buffer['xor'] = substr($key, $start) . $buffer['xor']; |
| 1141 |
} |
| 1142 |
} |
| 1143 |
} |
| 1144 |
|
| 1145 |
return $ciphertext; |
| 1146 |
} |
| 1147 |
|
| 1148 |
/** |
| 1149 |
* Decrypts a message. |
| 1150 |
* |
| 1151 |
* If strlen($ciphertext) is not a multiple of 8, null bytes will be added to the end of the string until it is. |
| 1152 |
* |
| 1153 |
* @see Crypt_DES::encrypt() |
| 1154 |
* @access public |
| 1155 |
* @param String $ciphertext |
| 1156 |
*/ |
| 1157 |
function decrypt($ciphertext) |
| 1158 |
{ |
| 1159 |
if ($this->paddable) { |
| 1160 |
// we pad with chr(0) since that's what mcrypt_generic does. to quote from http://php.net/function.mcrypt-generic : |
| 1161 |
// "The data is padded with "\0" to make sure the length of the data is n * blocksize." |
| 1162 |
$ciphertext = str_pad($ciphertext, (strlen($ciphertext) + 7) & 0xFFFFFFF8, chr(0)); |
| 1163 |
} |
| 1164 |
|
| 1165 |
if ( CRYPT_DES_MODE == CRYPT_DES_MODE_MCRYPT ) { |
| 1166 |
if ($this->dechanged) { |
| 1167 |
mcrypt_generic_init($this->demcrypt, $this->keys, $this->decryptIV); |
| 1168 |
if ($this->mode == 'ncfb') { |
| 1169 |
mcrypt_generic_init($this->ecb, $this->keys, "\0\0\0\0\0\0\0\0"); |
| 1170 |
} |
| 1171 |
$this->dechanged = false; |
| 1172 |
} |
| 1173 |
|
| 1174 |
if ($this->mode != 'ncfb' || !$this->continuousBuffer) { |
| 1175 |
$plaintext = mdecrypt_generic($this->demcrypt, $ciphertext); |
| 1176 |
} else { |
| 1177 |
$iv = &$this->decryptIV; |
| 1178 |
$pos = &$this->debuffer['pos']; |
| 1179 |
$len = strlen($ciphertext); |
| 1180 |
$plaintext = ''; |
| 1181 |
$i = 0; |
| 1182 |
if ($pos) { |
| 1183 |
$orig_pos = $pos; |
| 1184 |
$max = 8 - $pos; |
| 1185 |
if ($len >= $max) { |
| 1186 |
$i = $max; |
| 1187 |
$len-= $max; |
| 1188 |
$pos = 0; |
| 1189 |
} else { |
| 1190 |
$i = $len; |
| 1191 |
$pos+= $len; |
| 1192 |
$len = 0; |
| 1193 |
} |
| 1194 |
$plaintext = substr($iv, $orig_pos) ^ $ciphertext; |
| 1195 |
$iv = substr_replace($iv, substr($ciphertext, 0, $i), $orig_pos, $i); |
| 1196 |
} |
| 1197 |
if ($len >= 8) { |
| 1198 |
$cb = substr($ciphertext, $i, $len - $len % 8); |
| 1199 |
$plaintext.= mcrypt_generic($this->ecb, $iv . $cb) ^ $cb; |
| 1200 |
$iv = substr($cb, -8); |
| 1201 |
$len%= 8; |
| 1202 |
} |
| 1203 |
if ($len) { |
| 1204 |
$iv = mcrypt_generic($this->ecb, $iv); |
| 1205 |
$plaintext.= $iv ^ substr($ciphertext, -$len); |
| 1206 |
$iv = substr_replace($iv, substr($ciphertext, -$len), 0, $len); |
| 1207 |
$pos = $len; |
| 1208 |
} |
| 1209 |
return $plaintext; |
| 1210 |
} |
| 1211 |
|
| 1212 |
if (!$this->continuousBuffer) { |
| 1213 |
mcrypt_generic_init($this->demcrypt, $this->keys, $this->decryptIV); |
| 1214 |
} |
| 1215 |
|
| 1216 |
return $this->paddable ? $this->_unpad($plaintext) : $plaintext; |
| 1217 |
} |
| 1218 |
|
| 1219 |
if (!is_array($this->keys)) { |
| 1220 |
$this->keys = $this->_prepareKey("\0\0\0\0\0\0\0\0"); |
| 1221 |
} |
| 1222 |
|
| 1223 |
if ($this->use_inline_crypt) { |
| 1224 |
$inline = $this->inline_crypt; |
| 1225 |
return $inline('decrypt', $this, $ciphertext); |
| 1226 |
} |
| 1227 |
|
| 1228 |
$buffer = &$this->debuffer; |
| 1229 |
$continuousBuffer = $this->continuousBuffer; |
| 1230 |
$plaintext = ''; |
| 1231 |
switch ($this->mode) { |
| 1232 |
case CRYPT_DES_MODE_ECB: |
| 1233 |
for ($i = 0; $i < strlen($ciphertext); $i+=8) { |
| 1234 |
$plaintext.= $this->_processBlock(substr($ciphertext, $i, 8), CRYPT_DES_DECRYPT); |
| 1235 |
} |
| 1236 |
break; |
| 1237 |
case CRYPT_DES_MODE_CBC: |
| 1238 |
$xor = $this->decryptIV; |
| 1239 |
for ($i = 0; $i < strlen($ciphertext); $i+=8) { |
| 1240 |
$block = substr($ciphertext, $i, 8); |
| 1241 |
$plaintext.= $this->_processBlock($block, CRYPT_DES_DECRYPT) ^ $xor; |
| 1242 |
$xor = $block; |
| 1243 |
} |
| 1244 |
if ($this->continuousBuffer) { |
| 1245 |
$this->decryptIV = $xor; |
| 1246 |
} |
| 1247 |
break; |
| 1248 |
case CRYPT_DES_MODE_CTR: |
| 1249 |
$xor = $this->decryptIV; |
| 1250 |
if (strlen($buffer['ciphertext'])) { |
| 1251 |
for ($i = 0; $i < strlen($ciphertext); $i+=8) { |
| 1252 |
$block = substr($ciphertext, $i, 8); |
| 1253 |
if (strlen($block) > strlen($buffer['ciphertext'])) { |
| 1254 |
$buffer['ciphertext'].= $this->_processBlock($this->_generate_xor($xor), CRYPT_DES_ENCRYPT); |
| 1255 |
} |
| 1256 |
$key = $this->_string_shift($buffer['ciphertext']); |
| 1257 |
$plaintext.= $block ^ $key; |
| 1258 |
} |
| 1259 |
} else { |
| 1260 |
for ($i = 0; $i < strlen($ciphertext); $i+=8) { |
| 1261 |
$block = substr($ciphertext, $i, 8); |
| 1262 |
$key = $this->_processBlock($this->_generate_xor($xor), CRYPT_DES_ENCRYPT); |
| 1263 |
$plaintext.= $block ^ $key; |
| 1264 |
} |
| 1265 |
} |
| 1266 |
if ($this->continuousBuffer) { |
| 1267 |
$this->decryptIV = $xor; |
| 1268 |
if ($start = strlen($ciphertext) % 8) { |
| 1269 |
$buffer['ciphertext'] = substr($key, $start) . $buffer['ciphertext']; |
| 1270 |
} |
| 1271 |
} |
| 1272 |
break; |
| 1273 |
case CRYPT_DES_MODE_CFB: |
| 1274 |
if ($this->continuousBuffer) { |
| 1275 |
$iv = &$this->decryptIV; |
| 1276 |
$pos = &$buffer['pos']; |
| 1277 |
} else { |
| 1278 |
$iv = $this->decryptIV; |
| 1279 |
$pos = 0; |
| 1280 |
} |
| 1281 |
$len = strlen($ciphertext); |
| 1282 |
$i = 0; |
| 1283 |
if ($pos) { |
| 1284 |
$orig_pos = $pos; |
| 1285 |
$max = 8 - $pos; |
| 1286 |
if ($len >= $max) { |
| 1287 |
$i = $max; |
| 1288 |
$len-= $max; |
| 1289 |
$pos = 0; |
| 1290 |
} else { |
| 1291 |
$i = $len; |
| 1292 |
$pos+= $len; |
| 1293 |
$len = 0; |
| 1294 |
} |
| 1295 |
$plaintext = substr($iv, $orig_pos) ^ $ciphertext; |
| 1296 |
$iv = substr_replace($iv, substr($ciphertext, 0, $i), $orig_pos, $i); |
| 1297 |
} |
| 1298 |
while ($len >= 8) { |
| 1299 |
$iv = $this->_processBlock($iv, CRYPT_DES_ENCRYPT); |
| 1300 |
$cb = substr($ciphertext, $i, 8); |
| 1301 |
$plaintext.= $iv ^ $cb; |
| 1302 |
$iv = $cb; |
| 1303 |
$len-= 8; |
| 1304 |
$i+= 8; |
| 1305 |
} |
| 1306 |
if ($len) { |
| 1307 |
$iv = $this->_processBlock($iv, CRYPT_DES_ENCRYPT); |
| 1308 |
$plaintext.= $iv ^ substr($ciphertext, $i); |
| 1309 |
$iv = substr_replace($iv, substr($ciphertext, $i), 0, $len); |
| 1310 |
$pos = $len; |
| 1311 |
} |
| 1312 |
return $plaintext; |
| 1313 |
case CRYPT_DES_MODE_OFB: |
| 1314 |
$xor = $this->decryptIV; |
| 1315 |
if (strlen($buffer['xor'])) { |
| 1316 |
for ($i = 0; $i < strlen($ciphertext); $i+=8) { |
| 1317 |
$block = substr($ciphertext, $i, 8); |
| 1318 |
if (strlen($block) > strlen($buffer['xor'])) { |
| 1319 |
$xor = $this->_processBlock($xor, CRYPT_DES_ENCRYPT); |
| 1320 |
$buffer['xor'].= $xor; |
| 1321 |
} |
| 1322 |
$key = $this->_string_shift($buffer['xor']); |
| 1323 |
$plaintext.= $block ^ $key; |
| 1324 |
} |
| 1325 |
} else { |
| 1326 |
for ($i = 0; $i < strlen($ciphertext); $i+=8) { |
| 1327 |
$xor = $this->_processBlock($xor, CRYPT_DES_ENCRYPT); |
| 1328 |
$plaintext.= substr($ciphertext, $i, 8) ^ $xor; |
| 1329 |
} |
| 1330 |
$key = $xor; |
| 1331 |
} |
| 1332 |
if ($this->continuousBuffer) { |
| 1333 |
$this->decryptIV = $xor; |
| 1334 |
if ($start = strlen($ciphertext) % 8) { |
| 1335 |
$buffer['xor'] = substr($key, $start) . $buffer['xor']; |
| 1336 |
} |
| 1337 |
} |
| 1338 |
} |
| 1339 |
|
| 1340 |
return $this->paddable ? $this->_unpad($plaintext) : $plaintext; |
| 1341 |
} |
| 1342 |
|
| 1343 |
/** |
| 1344 |
* Treat consecutive "packets" as if they are a continuous buffer. |
| 1345 |
* |
| 1346 |
* Say you have a 16-byte plaintext $plaintext. Using the default behavior, the two following code snippets |
| 1347 |
* will yield different outputs: |
| 1348 |
* |
| 1349 |
* <code> |
| 1350 |
* echo $des->encrypt(substr($plaintext, 0, 8)); |
| 1351 |
* echo $des->encrypt(substr($plaintext, 8, 8)); |
| 1352 |
* </code> |
| 1353 |
* <code> |
| 1354 |
* echo $des->encrypt($plaintext); |
| 1355 |
* </code> |
| 1356 |
* |
| 1357 |
* The solution is to enable the continuous buffer. Although this will resolve the above discrepancy, it creates |
| 1358 |
* another, as demonstrated with the following: |
| 1359 |
* |
| 1360 |
* <code> |
| 1361 |
* $des->encrypt(substr($plaintext, 0, 8)); |
| 1362 |
* echo $des->decrypt($des->encrypt(substr($plaintext, 8, 8))); |
| 1363 |
* </code> |
| 1364 |
* <code> |
| 1365 |
* echo $des->decrypt($des->encrypt(substr($plaintext, 8, 8))); |
| 1366 |
* </code> |
| 1367 |
* |
| 1368 |
* With the continuous buffer disabled, these would yield the same output. With it enabled, they yield different |
| 1369 |
* outputs. The reason is due to the fact that the initialization vector's change after every encryption / |
| 1370 |
* decryption round when the continuous buffer is enabled. When it's disabled, they remain constant. |
| 1371 |
* |
| 1372 |
* Put another way, when the continuous buffer is enabled, the state of the Crypt_DES() object changes after each |
| 1373 |
* encryption / decryption round, whereas otherwise, it'd remain constant. For this reason, it's recommended that |
| 1374 |
* continuous buffers not be used. They do offer better security and are, in fact, sometimes required (SSH uses them), |
| 1375 |
* however, they are also less intuitive and more likely to cause you problems. |
| 1376 |
* |
| 1377 |
* @see Crypt_DES::disableContinuousBuffer() |
| 1378 |
* @access public |
| 1379 |
*/ |
| 1380 |
function enableContinuousBuffer() |
| 1381 |
{ |
| 1382 |
$this->continuousBuffer = true; |
| 1383 |
} |
| 1384 |
|
| 1385 |
/** |
| 1386 |
* Treat consecutive packets as if they are a discontinuous buffer. |
| 1387 |
* |
| 1388 |
* The default behavior. |
| 1389 |
* |
| 1390 |
* @see Crypt_DES::enableContinuousBuffer() |
| 1391 |
* @access public |
| 1392 |
*/ |
| 1393 |
function disableContinuousBuffer() |
| 1394 |
{ |
| 1395 |
$this->continuousBuffer = false; |
| 1396 |
$this->encryptIV = $this->iv; |
| 1397 |
$this->decryptIV = $this->iv; |
| 1398 |
$this->enbuffer = array('encrypted' => '', 'xor' => '', 'pos' => 0, 'enmcrypt_init' => true); |
| 1399 |
$this->debuffer = array('ciphertext' => '', 'xor' => '', 'pos' => 0, 'demcrypt_init' => true); |
| 1400 |
|
| 1401 |
if (CRYPT_DES_MODE == CRYPT_DES_MODE_MCRYPT) { |
| 1402 |
mcrypt_generic_init($this->enmcrypt, $this->keys, $this->iv); |
| 1403 |
mcrypt_generic_init($this->demcrypt, $this->keys, $this->iv); |
| 1404 |
} |
| 1405 |
} |
| 1406 |
|
| 1407 |
/** |
| 1408 |
* Pad "packets". |
| 1409 |
* |
| 1410 |
* DES works by encrypting eight bytes at a time. If you ever need to encrypt or decrypt something that's not |
| 1411 |
* a multiple of eight, it becomes necessary to pad the input so that it's length is a multiple of eight. |
| 1412 |
* |
| 1413 |
* Padding is enabled by default. Sometimes, however, it is undesirable to pad strings. Such is the case in SSH1, |
| 1414 |
* where "packets" are padded with random bytes before being encrypted. Unpad these packets and you risk stripping |
| 1415 |
* away characters that shouldn't be stripped away. (SSH knows how many bytes are added because the length is |
| 1416 |
* transmitted separately) |
| 1417 |
* |
| 1418 |
* @see Crypt_DES::disablePadding() |
| 1419 |
* @access public |
| 1420 |
*/ |
| 1421 |
function enablePadding() |
| 1422 |
{ |
| 1423 |
$this->padding = true; |
| 1424 |
} |
| 1425 |
|
| 1426 |
/** |
| 1427 |
* Do not pad packets. |
| 1428 |
* |
| 1429 |
* @see Crypt_DES::enablePadding() |
| 1430 |
* @access public |
| 1431 |
*/ |
| 1432 |
function disablePadding() |
| 1433 |
{ |
| 1434 |
$this->padding = false; |
| 1435 |
} |
| 1436 |
|
| 1437 |
/** |
| 1438 |
* Pads a string |
| 1439 |
* |
| 1440 |
* Pads a string using the RSA PKCS padding standards so that its length is a multiple of the blocksize (8). |
| 1441 |
* 8 - (strlen($text) & 7) bytes are added, each of which is equal to chr(8 - (strlen($text) & 7) |
| 1442 |
* |
| 1443 |
* If padding is disabled and $text is not a multiple of the blocksize, the string will be padded regardless |
| 1444 |
* and padding will, hence forth, be enabled. |
| 1445 |
* |
| 1446 |
* @see Crypt_DES::_unpad() |
| 1447 |
* @access private |
| 1448 |
*/ |
| 1449 |
function _pad($text) |
| 1450 |
{ |
| 1451 |
$length = strlen($text); |
| 1452 |
|
| 1453 |
if (!$this->padding) { |
| 1454 |
if (($length & 7) == 0) { |
| 1455 |
return $text; |
| 1456 |
} else { |
| 1457 |
user_error("The plaintext's length ($length) is not a multiple of the block size (8)"); |
| 1458 |
$this->padding = true; |
| 1459 |
} |
| 1460 |
} |
| 1461 |
|
| 1462 |
$pad = 8 - ($length & 7); |
| 1463 |
return str_pad($text, $length + $pad, chr($pad)); |
| 1464 |
} |
| 1465 |
|
| 1466 |
/** |
| 1467 |
* Unpads a string |
| 1468 |
* |
| 1469 |
* If padding is enabled and the reported padding length is invalid the encryption key will be assumed to be wrong |
| 1470 |
* and false will be returned. |
| 1471 |
* |
| 1472 |
* @see Crypt_DES::_pad() |
| 1473 |
* @access private |
| 1474 |
*/ |
| 1475 |
function _unpad($text) |
| 1476 |
{ |
| 1477 |
if (!$this->padding) { |
| 1478 |
return $text; |
| 1479 |
} |
| 1480 |
|
| 1481 |
$length = ord($text[strlen($text) - 1]); |
| 1482 |
|
| 1483 |
if (!$length || $length > 8) { |
| 1484 |
return false; |
| 1485 |
} |
| 1486 |
|
| 1487 |
return substr($text, 0, -$length); |
| 1488 |
} |
| 1489 |
|
| 1490 |
/** |
| 1491 |
* Encrypts or decrypts a 64-bit block |
| 1492 |
* |
| 1493 |
* $mode should be either CRYPT_DES_ENCRYPT or CRYPT_DES_DECRYPT. See |
| 1494 |
* {@link http://en.wikipedia.org/wiki/Image:Feistel.png Feistel.png} to get a general |
| 1495 |
* idea of what this function does. |
| 1496 |
* |
| 1497 |
* @access private |
| 1498 |
* @param String $block |
| 1499 |
* @param Integer $mode |
| 1500 |
* @return String |
| 1501 |
*/ |
| 1502 |
function _processBlock($block, $mode) |
| 1503 |
{ |
| 1504 |
$shuffle = $this->shuffle; |
| 1505 |
$invipmap = $this->invipmap; |
| 1506 |
$ipmap = $this->ipmap; |
| 1507 |
$sbox1 = $this->sbox1; |
| 1508 |
$sbox2 = $this->sbox2; |
| 1509 |
$sbox3 = $this->sbox3; |
| 1510 |
$sbox4 = $this->sbox4; |
| 1511 |
$sbox5 = $this->sbox5; |
| 1512 |
$sbox6 = $this->sbox6; |
| 1513 |
$sbox7 = $this->sbox7; |
| 1514 |
$sbox8 = $this->sbox8; |
| 1515 |
$keys = $this->keys[$mode]; |
| 1516 |
|
| 1517 |
// Do the initial IP permutation. |
| 1518 |
$t = unpack('Nl/Nr', $block); |
| 1519 |
list($l, $r) = array($t['l'], $t['r']); |
| 1520 |
$block = ($shuffle[$ipmap[$r & 0xFF]] & "\x80\x80\x80\x80\x80\x80\x80\x80") | |
| 1521 |
($shuffle[$ipmap[($r >> 8) & 0xFF]] & "\x40\x40\x40\x40\x40\x40\x40\x40") | |
| 1522 |
($shuffle[$ipmap[($r >> 16) & 0xFF]] & "\x20\x20\x20\x20\x20\x20\x20\x20") | |
| 1523 |
($shuffle[$ipmap[($r >> 24) & 0xFF]] & "\x10\x10\x10\x10\x10\x10\x10\x10") | |
| 1524 |
($shuffle[$ipmap[$l & 0xFF]] & "\x08\x08\x08\x08\x08\x08\x08\x08") | |
| 1525 |
($shuffle[$ipmap[($l >> 8) & 0xFF]] & "\x04\x04\x04\x04\x04\x04\x04\x04") | |
| 1526 |
($shuffle[$ipmap[($l >> 16) & 0xFF]] & "\x02\x02\x02\x02\x02\x02\x02\x02") | |
| 1527 |
($shuffle[$ipmap[($l >> 24) & 0xFF]] & "\x01\x01\x01\x01\x01\x01\x01\x01"); |
| 1528 |
|
| 1529 |
// Extract L0 and R0. |
| 1530 |
$t = unpack('Nl/Nr', $block); |
| 1531 |
list($l, $r) = array($t['l'], $t['r']); |
| 1532 |
|
| 1533 |
// Perform the 16 steps. |
| 1534 |
for ($i = 0; $i < 16; $i++) { |
| 1535 |
// start of "the Feistel (F) function" - see the following URL: |
| 1536 |
// http://en.wikipedia.org/wiki/Image:Data_Encryption_Standard_InfoBox_Diagram.png |
| 1537 |
// Merge key schedule. |
| 1538 |
$b1 = (($r >> 3) & 0x1FFFFFFF) ^ ($r << 29) ^ $keys[$i][0]; |
| 1539 |
$b2 = (($r >> 31) & 0x00000001) ^ ($r << 1) ^ $keys[$i][1]; |
| 1540 |
|
| 1541 |
// S-box indexing. |
| 1542 |
$t = $sbox1[($b1 >> 24) & 0x3F] ^ $sbox2[($b2 >> 24) & 0x3F] ^ |
| 1543 |
$sbox3[($b1 >> 16) & 0x3F] ^ $sbox4[($b2 >> 16) & 0x3F] ^ |
| 1544 |
$sbox5[($b1 >> 8) & 0x3F] ^ $sbox6[($b2 >> 8) & 0x3F] ^ |
| 1545 |
$sbox7[$b1 & 0x3F] ^ $sbox8[$b2 & 0x3F] ^ $l; |
| 1546 |
// end of "the Feistel (F) function" |
| 1547 |
|
| 1548 |
$l = $r; |
| 1549 |
$r = $t; |
| 1550 |
} |
| 1551 |
|
| 1552 |
// Perform the inverse IP permutation. |
| 1553 |
return ($shuffle[$invipmap[($l >> 24) & 0xFF]] & "\x80\x80\x80\x80\x80\x80\x80\x80") | |
| 1554 |
($shuffle[$invipmap[($r >> 24) & 0xFF]] & "\x40\x40\x40\x40\x40\x40\x40\x40") | |
| 1555 |
($shuffle[$invipmap[($l >> 16) & 0xFF]] & "\x20\x20\x20\x20\x20\x20\x20\x20") | |
| 1556 |
($shuffle[$invipmap[($r >> 16) & 0xFF]] & "\x10\x10\x10\x10\x10\x10\x10\x10") | |
| 1557 |
($shuffle[$invipmap[($l >> 8) & 0xFF]] & "\x08\x08\x08\x08\x08\x08\x08\x08") | |
| 1558 |
($shuffle[$invipmap[($r >> 8) & 0xFF]] & "\x04\x04\x04\x04\x04\x04\x04\x04") | |
| 1559 |
($shuffle[$invipmap[$l & 0xFF]] & "\x02\x02\x02\x02\x02\x02\x02\x02") | |
| 1560 |
($shuffle[$invipmap[$r & 0xFF]] & "\x01\x01\x01\x01\x01\x01\x01\x01"); |
| 1561 |
} |
| 1562 |
|
| 1563 |
/** |
| 1564 |
* Creates the key schedule. |
| 1565 |
* |
| 1566 |
* @access private |
| 1567 |
* @param String $key |
| 1568 |
* @return Array |
| 1569 |
*/ |
| 1570 |
function _prepareKey($key) |
| 1571 |
{ |
| 1572 |
static $shifts = array( // number of key bits shifted per round |
| 1573 |
1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 |
| 1574 |
); |
| 1575 |
|
| 1576 |
static $pc1map = array( |
| 1577 |
0x00, 0x00, 0x08, 0x08, 0x04, 0x04, 0x0C, 0x0C, |
| 1578 |
0x02, 0x02, 0x0A, 0x0A, 0x06, 0x06, 0x0E, 0x0E, |
| 1579 |
0x10, 0x10, 0x18, 0x18, 0x14, 0x14, 0x1C, 0x1C, |
| 1580 |
0x12, 0x12, 0x1A, 0x1A, 0x16, 0x16, 0x1E, 0x1E, |
| 1581 |
0x20, 0x20, 0x28, 0x28, 0x24, 0x24, 0x2C, 0x2C, |
| 1582 |
0x22, 0x22, 0x2A, 0x2A, 0x26, 0x26, 0x2E, 0x2E, |
| 1583 |
0x30, 0x30, 0x38, 0x38, 0x34, 0x34, 0x3C, 0x3C, |
| 1584 |
0x32, 0x32, 0x3A, 0x3A, 0x36, 0x36, 0x3E, 0x3E, |
| 1585 |
0x40, 0x40, 0x48, 0x48, 0x44, 0x44, 0x4C, 0x4C, |
| 1586 |
0x42, 0x42, 0x4A, 0x4A, 0x46, 0x46, 0x4E, 0x4E, |
| 1587 |
0x50, 0x50, 0x58, 0x58, 0x54, 0x54, 0x5C, 0x5C, |
| 1588 |
0x52, 0x52, 0x5A, 0x5A, 0x56, 0x56, 0x5E, 0x5E, |
| 1589 |
0x60, 0x60, 0x68, 0x68, 0x64, 0x64, 0x6C, 0x6C, |
| 1590 |
0x62, 0x62, 0x6A, 0x6A, 0x66, 0x66, 0x6E, 0x6E, |
| 1591 |
0x70, 0x70, 0x78, 0x78, 0x74, 0x74, 0x7C, 0x7C, |
| 1592 |
0x72, 0x72, 0x7A, 0x7A, 0x76, 0x76, 0x7E, 0x7E, |
| 1593 |
0x80, 0x80, 0x88, 0x88, 0x84, 0x84, 0x8C, 0x8C, |
| 1594 |
0x82, 0x82, 0x8A, 0x8A, 0x86, 0x86, 0x8E, 0x8E, |
| 1595 |
0x90, 0x90, 0x98, 0x98, 0x94, 0x94, 0x9C, 0x9C, |
| 1596 |
0x92, 0x92, 0x9A, 0x9A, 0x96, 0x96, 0x9E, 0x9E, |
| 1597 |
0xA0, 0xA0, 0xA8, 0xA8, 0xA4, 0xA4, 0xAC, 0xAC, |
| 1598 |
0xA2, 0xA2, 0xAA, 0xAA, 0xA6, 0xA6, 0xAE, 0xAE, |
| 1599 |
0xB0, 0xB0, 0xB8, 0xB8, 0xB4, 0xB4, 0xBC, 0xBC, |
| 1600 |
0xB2, 0xB2, 0xBA, 0xBA, 0xB6, 0xB6, 0xBE, 0xBE, |
| 1601 |
0xC0, 0xC0, 0xC8, 0xC8, 0xC4, 0xC4, 0xCC, 0xCC, |
| 1602 |
0xC2, 0xC2, 0xCA, 0xCA, 0xC6, 0xC6, 0xCE, 0xCE, |
| 1603 |
0xD0, 0xD0, 0xD8, 0xD8, 0xD4, 0xD4, 0xDC, 0xDC, |
| 1604 |
0xD2, 0xD2, 0xDA, 0xDA, 0xD6, 0xD6, 0xDE, 0xDE, |
| 1605 |
0xE0, 0xE0, 0xE8, 0xE8, 0xE4, 0xE4, 0xEC, 0xEC, |
| 1606 |
0xE2, 0xE2, 0xEA, 0xEA, 0xE6, 0xE6, 0xEE, 0xEE, |
| 1607 |
0xF0, 0xF0, 0xF8, 0xF8, 0xF4, 0xF4, 0xFC, 0xFC, |
| 1608 |
0xF2, 0xF2, 0xFA, 0xFA, 0xF6, 0xF6, 0xFE, 0xFE |
| 1609 |
); |
| 1610 |
|
| 1611 |
// Mapping tables for the PC-2 transformation. |
| 1612 |
static $pc2mapc1 = array( |
| 1613 |
0x00000000, 0x00000400, 0x00200000, 0x00200400, |
| 1614 |
0x00000001, 0x00000401, 0x00200001, 0x00200401, |
| 1615 |
0x02000000, 0x02000400, 0x02200000, 0x02200400, |
| 1616 |
0x02000001, 0x02000401, 0x02200001, 0x02200401 |
| 1617 |
); |
| 1618 |
static $pc2mapc2 = array( |
| 1619 |
0x00000000, 0x00000800, 0x08000000, 0x08000800, |
| 1620 |
0x00010000, 0x00010800, 0x08010000, 0x08010800, |
| 1621 |
0x00000000, 0x00000800, 0x08000000, 0x08000800, |
| 1622 |
0x00010000, 0x00010800, 0x08010000, 0x08010800, |
| 1623 |
0x00000100, 0x00000900, 0x08000100, 0x08000900, |
| 1624 |
0x00010100, 0x00010900, 0x08010100, 0x08010900, |
| 1625 |
0x00000100, 0x00000900, 0x08000100, 0x08000900, |
| 1626 |
0x00010100, 0x00010900, 0x08010100, 0x08010900, |
| 1627 |
0x00000010, 0x00000810, 0x08000010, 0x08000810, |
| 1628 |
0x00010010, 0x00010810, 0x08010010, 0x08010810, |
| 1629 |
0x00000010, 0x00000810, 0x08000010, 0x08000810, |
| 1630 |
0x00010010, 0x00010810, 0x08010010, 0x08010810, |
| 1631 |
0x00000110, 0x00000910, 0x08000110, 0x08000910, |
| 1632 |
0x00010110, 0x00010910, 0x08010110, 0x08010910, |
| 1633 |
0x00000110, 0x00000910, 0x08000110, 0x08000910, |
| 1634 |
0x00010110, 0x00010910, 0x08010110, 0x08010910, |
| 1635 |
0x00040000, 0x00040800, 0x08040000, 0x08040800, |
| 1636 |
0x00050000, 0x00050800, 0x08050000, 0x08050800, |
| 1637 |
0x00040000, 0x00040800, 0x08040000, 0x08040800, |
| 1638 |
0x00050000, 0x00050800, 0x08050000, 0x08050800, |
| 1639 |
0x00040100, 0x00040900, 0x08040100, 0x08040900, |
| 1640 |
0x00050100, 0x00050900, 0x08050100, 0x08050900, |
| 1641 |
0x00040100, 0x00040900, 0x08040100, 0x08040900, |
| 1642 |
0x00050100, 0x00050900, 0x08050100, 0x08050900, |
| 1643 |
0x00040010, 0x00040810, 0x08040010, 0x08040810, |
| 1644 |
0x00050010, 0x00050810, 0x08050010, 0x08050810, |
| 1645 |
0x00040010, 0x00040810, 0x08040010, 0x08040810, |
| 1646 |
0x00050010, 0x00050810, 0x08050010, 0x08050810, |
| 1647 |
0x00040110, 0x00040910, 0x08040110, 0x08040910, |
| 1648 |
0x00050110, 0x00050910, 0x08050110, 0x08050910, |
| 1649 |
0x00040110, 0x00040910, 0x08040110, 0x08040910, |
| 1650 |
0x00050110, 0x00050910, 0x08050110, 0x08050910, |
| 1651 |
0x01000000, 0x01000800, 0x09000000, 0x09000800, |
| 1652 |
0x01010000, 0x01010800, 0x09010000, 0x09010800, |
| 1653 |
0x01000000, 0x01000800, 0x09000000, 0x09000800, |
| 1654 |
0x01010000, 0x01010800, 0x09010000, 0x09010800, |
| 1655 |
0x01000100, 0x01000900, 0x09000100, 0x09000900, |
| 1656 |
0x01010100, 0x01010900, 0x09010100, 0x09010900, |
| 1657 |
0x01000100, 0x01000900, 0x09000100, 0x09000900, |
| 1658 |
0x01010100, 0x01010900, 0x09010100, 0x09010900, |
| 1659 |
0x01000010, 0x01000810, 0x09000010, 0x09000810, |
| 1660 |
0x01010010, 0x01010810, 0x09010010, 0x09010810, |
| 1661 |
0x01000010, 0x01000810, 0x09000010, 0x09000810, |
| 1662 |
0x01010010, 0x01010810, 0x09010010, 0x09010810, |
| 1663 |
0x01000110, 0x01000910, 0x09000110, 0x09000910, |
| 1664 |
0x01010110, 0x01010910, 0x09010110, 0x09010910, |
| 1665 |
0x01000110, 0x01000910, 0x09000110, 0x09000910, |
| 1666 |
0x01010110, 0x01010910, 0x09010110, 0x09010910, |
| 1667 |
0x01040000, 0x01040800, 0x09040000, 0x09040800, |
| 1668 |
0x01050000, 0x01050800, 0x09050000, 0x09050800, |
| 1669 |
0x01040000, 0x01040800, 0x09040000, 0x09040800, |
| 1670 |
0x01050000, 0x01050800, 0x09050000, 0x09050800, |
| 1671 |
0x01040100, 0x01040900, 0x09040100, 0x09040900, |
| 1672 |
0x01050100, 0x01050900, 0x09050100, 0x09050900, |
| 1673 |
0x01040100, 0x01040900, 0x09040100, 0x09040900, |
| 1674 |
0x01050100, 0x01050900, 0x09050100, 0x09050900, |
| 1675 |
0x01040010, 0x01040810, 0x09040010, 0x09040810, |
| 1676 |
0x01050010, 0x01050810, 0x09050010, 0x09050810, |
| 1677 |
0x01040010, 0x01040810, 0x09040010, 0x09040810, |
| 1678 |
0x01050010, 0x01050810, 0x09050010, 0x09050810, |
| 1679 |
0x01040110, 0x01040910, 0x09040110, 0x09040910, |
| 1680 |
0x01050110, 0x01050910, 0x09050110, 0x09050910, |
| 1681 |
0x01040110, 0x01040910, 0x09040110, 0x09040910, |
| 1682 |
0x01050110, 0x01050910, 0x09050110, 0x09050910 |
| 1683 |
); |
| 1684 |
static $pc2mapc3 = array( |
| 1685 |
0x00000000, 0x00000004, 0x00001000, 0x00001004, |
| 1686 |
0x00000000, 0x00000004, 0x00001000, 0x00001004, |
| 1687 |
0x10000000, 0x10000004, 0x10001000, 0x10001004, |
| 1688 |
0x10000000, 0x10000004, 0x10001000, 0x10001004, |
| 1689 |
0x00000020, 0x00000024, 0x00001020, 0x00001024, |
| 1690 |
0x00000020, 0x00000024, 0x00001020, 0x00001024, |
| 1691 |
0x10000020, 0x10000024, 0x10001020, 0x10001024, |
| 1692 |
0x10000020, 0x10000024, 0x10001020, 0x10001024, |
| 1693 |
0x00080000, 0x00080004, 0x00081000, 0x00081004, |
| 1694 |
0x00080000, 0x00080004, 0x00081000, 0x00081004, |
| 1695 |
0x10080000, 0x10080004, 0x10081000, 0x10081004, |
| 1696 |
0x10080000, 0x10080004, 0x10081000, 0x10081004, |
| 1697 |
0x00080020, 0x00080024, 0x00081020, 0x00081024, |
| 1698 |
0x00080020, 0x00080024, 0x00081020, 0x00081024, |
| 1699 |
0x10080020, 0x10080024, 0x10081020, 0x10081024, |
| 1700 |
0x10080020, 0x10080024, 0x10081020, 0x10081024, |
| 1701 |
0x20000000, 0x20000004, 0x20001000, 0x20001004, |
| 1702 |
0x20000000, 0x20000004, 0x20001000, 0x20001004, |
| 1703 |
0x30000000, 0x30000004, 0x30001000, 0x30001004, |
| 1704 |
0x30000000, 0x30000004, 0x30001000, 0x30001004, |
| 1705 |
0x20000020, 0x20000024, 0x20001020, 0x20001024, |
| 1706 |
0x20000020, 0x20000024, 0x20001020, 0x20001024, |
| 1707 |
0x30000020, 0x30000024, 0x30001020, 0x30001024, |
| 1708 |
0x30000020, 0x30000024, 0x30001020, 0x30001024, |
| 1709 |
0x20080000, 0x20080004, 0x20081000, 0x20081004, |
| 1710 |
0x20080000, 0x20080004, 0x20081000, 0x20081004, |
| 1711 |
0x30080000, 0x30080004, 0x30081000, 0x30081004, |
| 1712 |
0x30080000, 0x30080004, 0x30081000, 0x30081004, |
| 1713 |
0x20080020, 0x20080024, 0x20081020, 0x20081024, |
| 1714 |
0x20080020, 0x20080024, 0x20081020, 0x20081024, |
| 1715 |
0x30080020, 0x30080024, 0x30081020, 0x30081024, |
| 1716 |
0x30080020, 0x30080024, 0x30081020, 0x30081024, |
| 1717 |
0x00000002, 0x00000006, 0x00001002, 0x00001006, |
| 1718 |
0x00000002, 0x00000006, 0x00001002, 0x00001006, |
| 1719 |
0x10000002, 0x10000006, 0x10001002, 0x10001006, |
| 1720 |
0x10000002, 0x10000006, 0x10001002, 0x10001006, |
| 1721 |
0x00000022, 0x00000026, 0x00001022, 0x00001026, |
| 1722 |
0x00000022, 0x00000026, 0x00001022, 0x00001026, |
| 1723 |
0x10000022, 0x10000026, 0x10001022, 0x10001026, |
| 1724 |
0x10000022, 0x10000026, 0x10001022, 0x10001026, |
| 1725 |
0x00080002, 0x00080006, 0x00081002, 0x00081006, |
| 1726 |
0x00080002, 0x00080006, 0x00081002, 0x00081006, |
| 1727 |
0x10080002, 0x10080006, 0x10081002, 0x10081006, |
| 1728 |
0x10080002, 0x10080006, 0x10081002, 0x10081006, |
| 1729 |
0x00080022, 0x00080026, 0x00081022, 0x00081026, |
| 1730 |
0x00080022, 0x00080026, 0x00081022, 0x00081026, |
| 1731 |
0x10080022, 0x10080026, 0x10081022, 0x10081026, |
| 1732 |
0x10080022, 0x10080026, 0x10081022, 0x10081026, |
| 1733 |
0x20000002, 0x20000006, 0x20001002, 0x20001006, |
| 1734 |
0x20000002, 0x20000006, 0x20001002, 0x20001006, |
| 1735 |
0x30000002, 0x30000006, 0x30001002, 0x30001006, |
| 1736 |
0x30000002, 0x30000006, 0x30001002, 0x30001006, |
| 1737 |
0x20000022, 0x20000026, 0x20001022, 0x20001026, |
| 1738 |
0x20000022, 0x20000026, 0x20001022, 0x20001026, |
| 1739 |
0x30000022, 0x30000026, 0x30001022, 0x30001026, |
| 1740 |
0x30000022, 0x30000026, 0x30001022, 0x30001026, |
| 1741 |
0x20080002, 0x20080006, 0x20081002, 0x20081006, |
| 1742 |
0x20080002, 0x20080006, 0x20081002, 0x20081006, |
| 1743 |
0x30080002, 0x30080006, 0x30081002, 0x30081006, |
| 1744 |
0x30080002, 0x30080006, 0x30081002, 0x30081006, |
| 1745 |
0x20080022, 0x20080026, 0x20081022, 0x20081026, |
| 1746 |
0x20080022, 0x20080026, 0x20081022, 0x20081026, |
| 1747 |
0x30080022, 0x30080026, 0x30081022, 0x30081026, |
| 1748 |
0x30080022, 0x30080026, 0x30081022, 0x30081026 |
| 1749 |
); |
| 1750 |
static $pc2mapc4 = array( |
| 1751 |
0x00000000, 0x00100000, 0x00000008, 0x00100008, |
| 1752 |
0x00000200, 0x00100200, 0x00000208, 0x00100208, |
| 1753 |
0x00000000, 0x00100000, 0x00000008, 0x00100008, |
| 1754 |
0x00000200, 0x00100200, 0x00000208, 0x00100208, |
| 1755 |
0x04000000, 0x04100000, 0x04000008, 0x04100008, |
| 1756 |
0x04000200, 0x04100200, 0x04000208, 0x04100208, |
| 1757 |
0x04000000, 0x04100000, 0x04000008, 0x04100008, |
| 1758 |
0x04000200, 0x04100200, 0x04000208, 0x04100208, |
| 1759 |
0x00002000, 0x00102000, 0x00002008, 0x00102008, |
| 1760 |
0x00002200, 0x00102200, 0x00002208, 0x00102208, |
| 1761 |
0x00002000, 0x00102000, 0x00002008, 0x00102008, |
| 1762 |
0x00002200, 0x00102200, 0x00002208, 0x00102208, |
| 1763 |
0x04002000, 0x04102000, 0x04002008, 0x04102008, |
| 1764 |
0x04002200, 0x04102200, 0x04002208, 0x04102208, |
| 1765 |
0x04002000, 0x04102000, 0x04002008, 0x04102008, |
| 1766 |
0x04002200, 0x04102200, 0x04002208, 0x04102208, |
| 1767 |
0x00000000, 0x00100000, 0x00000008, 0x00100008, |
| 1768 |
0x00000200, 0x00100200, 0x00000208, 0x00100208, |
| 1769 |
0x00000000, 0x00100000, 0x00000008, 0x00100008, |
| 1770 |
0x00000200, 0x00100200, 0x00000208, 0x00100208, |
| 1771 |
0x04000000, 0x04100000, 0x04000008, 0x04100008, |
| 1772 |
0x04000200, 0x04100200, 0x04000208, 0x04100208, |
| 1773 |
0x04000000, 0x04100000, 0x04000008, 0x04100008, |
| 1774 |
0x04000200, 0x04100200, 0x04000208, 0x04100208, |
| 1775 |
0x00002000, 0x00102000, 0x00002008, 0x00102008, |
| 1776 |
0x00002200, 0x00102200, 0x00002208, 0x00102208, |
| 1777 |
0x00002000, 0x00102000, 0x00002008, 0x00102008, |
| 1778 |
0x00002200, 0x00102200, 0x00002208, 0x00102208, |
| 1779 |
0x04002000, 0x04102000, 0x04002008, 0x04102008, |
| 1780 |
0x04002200, 0x04102200, 0x04002208, 0x04102208, |
| 1781 |
0x04002000, 0x04102000, 0x04002008, 0x04102008, |
| 1782 |
0x04002200, 0x04102200, 0x04002208, 0x04102208, |
| 1783 |
0x00020000, 0x00120000, 0x00020008, 0x00120008, |
| 1784 |
0x00020200, 0x00120200, 0x00020208, 0x00120208, |
| 1785 |
0x00020000, 0x00120000, 0x00020008, 0x00120008, |
| 1786 |
0x00020200, 0x00120200, 0x00020208, 0x00120208, |
| 1787 |
0x04020000, 0x04120000, 0x04020008, 0x04120008, |
| 1788 |
0x04020200, 0x04120200, 0x04020208, 0x04120208, |
| 1789 |
0x04020000, 0x04120000, 0x04020008, 0x04120008, |
| 1790 |
0x04020200, 0x04120200, 0x04020208, 0x04120208, |
| 1791 |
0x00022000, 0x00122000, 0x00022008, 0x00122008, |
| 1792 |
0x00022200, 0x00122200, 0x00022208, 0x00122208, |
| 1793 |
0x00022000, 0x00122000, 0x00022008, 0x00122008, |
| 1794 |
0x00022200, 0x00122200, 0x00022208, 0x00122208, |
| 1795 |
0x04022000, 0x04122000, 0x04022008, 0x04122008, |
| 1796 |
0x04022200, 0x04122200, 0x04022208, 0x04122208, |
| 1797 |
0x04022000, 0x04122000, 0x04022008, 0x04122008, |
| 1798 |
0x04022200, 0x04122200, 0x04022208, 0x04122208, |
| 1799 |
0x00020000, 0x00120000, 0x00020008, 0x00120008, |
| 1800 |
0x00020200, 0x00120200, 0x00020208, 0x00120208, |
| 1801 |
0x00020000, 0x00120000, 0x00020008, 0x00120008, |
| 1802 |
0x00020200, 0x00120200, 0x00020208, 0x00120208, |
| 1803 |
0x04020000, 0x04120000, 0x04020008, 0x04120008, |
| 1804 |
0x04020200, 0x04120200, 0x04020208, 0x04120208, |
| 1805 |
0x04020000, 0x04120000, 0x04020008, 0x04120008, |
| 1806 |
0x04020200, 0x04120200, 0x04020208, 0x04120208, |
| 1807 |
0x00022000, 0x00122000, 0x00022008, 0x00122008, |
| 1808 |
0x00022200, 0x00122200, 0x00022208, 0x00122208, |
| 1809 |
0x00022000, 0x00122000, 0x00022008, 0x00122008, |
| 1810 |
0x00022200, 0x00122200, 0x00022208, 0x00122208, |
| 1811 |
0x04022000, 0x04122000, 0x04022008, 0x04122008, |
| 1812 |
0x04022200, 0x04122200, 0x04022208, 0x04122208, |
| 1813 |
0x04022000, 0x04122000, 0x04022008, 0x04122008, |
| 1814 |
0x04022200, 0x04122200, 0x04022208, 0x04122208 |
| 1815 |
); |
| 1816 |
static $pc2mapd1 = array( |
| 1817 |
0x00000000, 0x00000001, 0x08000000, 0x08000001, |
| 1818 |
0x00200000, 0x00200001, 0x08200000, 0x08200001, |
| 1819 |
0x00000002, 0x00000003, 0x08000002, 0x08000003, |
| 1820 |
0x00200002, 0x00200003, 0x08200002, 0x08200003 |
| 1821 |
); |
| 1822 |
static $pc2mapd2 = array( |
| 1823 |
0x00000000, 0x00100000, 0x00000800, 0x00100800, |
| 1824 |
0x00000000, 0x00100000, 0x00000800, 0x00100800, |
| 1825 |
0x04000000, 0x04100000, 0x04000800, 0x04100800, |
| 1826 |
0x04000000, 0x04100000, 0x04000800, 0x04100800, |
| 1827 |
0x00000004, 0x00100004, 0x00000804, 0x00100804, |
| 1828 |
0x00000004, 0x00100004, 0x00000804, 0x00100804, |
| 1829 |
0x04000004, 0x04100004, 0x04000804, 0x04100804, |
| 1830 |
0x04000004, 0x04100004, 0x04000804, 0x04100804, |
| 1831 |
0x00000000, 0x00100000, 0x00000800, 0x00100800, |
| 1832 |
0x00000000, 0x00100000, 0x00000800, 0x00100800, |
| 1833 |
0x04000000, 0x04100000, 0x04000800, 0x04100800, |
| 1834 |
0x04000000, 0x04100000, 0x04000800, 0x04100800, |
| 1835 |
0x00000004, 0x00100004, 0x00000804, 0x00100804, |
| 1836 |
0x00000004, 0x00100004, 0x00000804, 0x00100804, |
| 1837 |
0x04000004, 0x04100004, 0x04000804, 0x04100804, |
| 1838 |
0x04000004, 0x04100004, 0x04000804, 0x04100804, |
| 1839 |
0x00000200, 0x00100200, 0x00000A00, 0x00100A00, |
| 1840 |
0x00000200, 0x00100200, 0x00000A00, 0x00100A00, |
| 1841 |
0x04000200, 0x04100200, 0x04000A00, 0x04100A00, |
| 1842 |
0x04000200, 0x04100200, 0x04000A00, 0x04100A00, |
| 1843 |
0x00000204, 0x00100204, 0x00000A04, 0x00100A04, |
| 1844 |
0x00000204, 0x00100204, 0x00000A04, 0x00100A04, |
| 1845 |
0x04000204, 0x04100204, 0x04000A04, 0x04100A04, |
| 1846 |
0x04000204, 0x04100204, 0x04000A04, 0x04100A04, |
| 1847 |
0x00000200, 0x00100200, 0x00000A00, 0x00100A00, |
| 1848 |
0x00000200, 0x00100200, 0x00000A00, 0x00100A00, |
| 1849 |
0x04000200, 0x04100200, 0x04000A00, 0x04100A00, |
| 1850 |
0x04000200, 0x04100200, 0x04000A00, 0x04100A00, |
| 1851 |
0x00000204, 0x00100204, 0x00000A04, 0x00100A04, |
| 1852 |
0x00000204, 0x00100204, 0x00000A04, 0x00100A04, |
| 1853 |
0x04000204, 0x04100204, 0x04000A04, 0x04100A04, |
| 1854 |
0x04000204, 0x04100204, 0x04000A04, 0x04100A04, |
| 1855 |
0x00020000, 0x00120000, 0x00020800, 0x00120800, |
| 1856 |
0x00020000, 0x00120000, 0x00020800, 0x00120800, |
| 1857 |
0x04020000, 0x04120000, 0x04020800, 0x04120800, |
| 1858 |
0x04020000, 0x04120000, 0x04020800, 0x04120800, |
| 1859 |
0x00020004, 0x00120004, 0x00020804, 0x00120804, |
| 1860 |
0x00020004, 0x00120004, 0x00020804, 0x00120804, |
| 1861 |
0x04020004, 0x04120004, 0x04020804, 0x04120804, |
| 1862 |
0x04020004, 0x04120004, 0x04020804, 0x04120804, |
| 1863 |
0x00020000, 0x00120000, 0x00020800, 0x00120800, |
| 1864 |
0x00020000, 0x00120000, 0x00020800, 0x00120800, |
| 1865 |
0x04020000, 0x04120000, 0x04020800, 0x04120800, |
| 1866 |
0x04020000, 0x04120000, 0x04020800, 0x04120800, |
| 1867 |
0x00020004, 0x00120004, 0x00020804, 0x00120804, |
| 1868 |
0x00020004, 0x00120004, 0x00020804, 0x00120804, |
| 1869 |
0x04020004, 0x04120004, 0x04020804, 0x04120804, |
| 1870 |
0x04020004, 0x04120004, 0x04020804, 0x04120804, |
| 1871 |
0x00020200, 0x00120200, 0x00020A00, 0x00120A00, |
| 1872 |
0x00020200, 0x00120200, 0x00020A00, 0x00120A00, |
| 1873 |
0x04020200, 0x04120200, 0x04020A00, 0x04120A00, |
| 1874 |
0x04020200, 0x04120200, 0x04020A00, 0x04120A00, |
| 1875 |
0x00020204, 0x00120204, 0x00020A04, 0x00120A04, |
| 1876 |
0x00020204, 0x00120204, 0x00020A04, 0x00120A04, |
| 1877 |
0x04020204, 0x04120204, 0x04020A04, 0x04120A04, |
| 1878 |
0x04020204, 0x04120204, 0x04020A04, 0x04120A04, |
| 1879 |
0x00020200, 0x00120200, 0x00020A00, 0x00120A00, |
| 1880 |
0x00020200, 0x00120200, 0x00020A00, 0x00120A00, |
| 1881 |
0x04020200, 0x04120200, 0x04020A00, 0x04120A00, |
| 1882 |
0x04020200, 0x04120200, 0x04020A00, 0x04120A00, |
| 1883 |
0x00020204, 0x00120204, 0x00020A04, 0x00120A04, |
| 1884 |
0x00020204, 0x00120204, 0x00020A04, 0x00120A04, |
| 1885 |
0x04020204, 0x04120204, 0x04020A04, 0x04120A04, |
| 1886 |
0x04020204, 0x04120204, 0x04020A04, 0x04120A04 |
| 1887 |
); |
| 1888 |
static $pc2mapd3 = array( |
| 1889 |
0x00000000, 0x00010000, 0x02000000, 0x02010000, |
| 1890 |
0x00000020, 0x00010020, 0x02000020, 0x02010020, |
| 1891 |
0x00040000, 0x00050000, 0x02040000, 0x02050000, |
| 1892 |
0x00040020, 0x00050020, 0x02040020, 0x02050020, |
| 1893 |
0x00002000, 0x00012000, 0x02002000, 0x02012000, |
| 1894 |
0x00002020, 0x00012020, 0x02002020, 0x02012020, |
| 1895 |
0x00042000, 0x00052000, 0x02042000, 0x02052000, |
| 1896 |
0x00042020, 0x00052020, 0x02042020, 0x02052020, |
| 1897 |
0x00000000, 0x00010000, 0x02000000, 0x02010000, |
| 1898 |
0x00000020, 0x00010020, 0x02000020, 0x02010020, |
| 1899 |
0x00040000, 0x00050000, 0x02040000, 0x02050000, |
| 1900 |
0x00040020, 0x00050020, 0x02040020, 0x02050020, |
| 1901 |
0x00002000, 0x00012000, 0x02002000, 0x02012000, |
| 1902 |
0x00002020, 0x00012020, 0x02002020, 0x02012020, |
| 1903 |
0x00042000, 0x00052000, 0x02042000, 0x02052000, |
| 1904 |
0x00042020, 0x00052020, 0x02042020, 0x02052020, |
| 1905 |
0x00000010, 0x00010010, 0x02000010, 0x02010010, |
| 1906 |
0x00000030, 0x00010030, 0x02000030, 0x02010030, |
| 1907 |
0x00040010, 0x00050010, 0x02040010, 0x02050010, |
| 1908 |
0x00040030, 0x00050030, 0x02040030, 0x02050030, |
| 1909 |
0x00002010, 0x00012010, 0x02002010, 0x02012010, |
| 1910 |
0x00002030, 0x00012030, 0x02002030, 0x02012030, |
| 1911 |
0x00042010, 0x00052010, 0x02042010, 0x02052010, |
| 1912 |
0x00042030, 0x00052030, 0x02042030, 0x02052030, |
| 1913 |
0x00000010, 0x00010010, 0x02000010, 0x02010010, |
| 1914 |
0x00000030, 0x00010030, 0x02000030, 0x02010030, |
| 1915 |
0x00040010, 0x00050010, 0x02040010, 0x02050010, |
| 1916 |
0x00040030, 0x00050030, 0x02040030, 0x02050030, |
| 1917 |
0x00002010, 0x00012010, 0x02002010, 0x02012010, |
| 1918 |
0x00002030, 0x00012030, 0x02002030, 0x02012030, |
| 1919 |
0x00042010, 0x00052010, 0x02042010, 0x02052010, |
| 1920 |
0x00042030, 0x00052030, 0x02042030, 0x02052030, |
| 1921 |
0x20000000, 0x20010000, 0x22000000, 0x22010000, |
| 1922 |
0x20000020, 0x20010020, 0x22000020, 0x22010020, |
| 1923 |
0x20040000, 0x20050000, 0x22040000, 0x22050000, |
| 1924 |
0x20040020, 0x20050020, 0x22040020, 0x22050020, |
| 1925 |
0x20002000, 0x20012000, 0x22002000, 0x22012000, |
| 1926 |
0x20002020, 0x20012020, 0x22002020, 0x22012020, |
| 1927 |
0x20042000, 0x20052000, 0x22042000, 0x22052000, |
| 1928 |
0x20042020, 0x20052020, 0x22042020, 0x22052020, |
| 1929 |
0x20000000, 0x20010000, 0x22000000, 0x22010000, |
| 1930 |
0x20000020, 0x20010020, 0x22000020, 0x22010020, |
| 1931 |
0x20040000, 0x20050000, 0x22040000, 0x22050000, |
| 1932 |
0x20040020, 0x20050020, 0x22040020, 0x22050020, |
| 1933 |
0x20002000, 0x20012000, 0x22002000, 0x22012000, |
| 1934 |
0x20002020, 0x20012020, 0x22002020, 0x22012020, |
| 1935 |
0x20042000, 0x20052000, 0x22042000, 0x22052000, |
| 1936 |
0x20042020, 0x20052020, 0x22042020, 0x22052020, |
| 1937 |
0x20000010, 0x20010010, 0x22000010, 0x22010010, |
| 1938 |
0x20000030, 0x20010030, 0x22000030, 0x22010030, |
| 1939 |
0x20040010, 0x20050010, 0x22040010, 0x22050010, |
| 1940 |
0x20040030, 0x20050030, 0x22040030, 0x22050030, |
| 1941 |
0x20002010, 0x20012010, 0x22002010, 0x22012010, |
| 1942 |
0x20002030, 0x20012030, 0x22002030, 0x22012030, |
| 1943 |
0x20042010, 0x20052010, 0x22042010, 0x22052010, |
| 1944 |
0x20042030, 0x20052030, 0x22042030, 0x22052030, |
| 1945 |
0x20000010, 0x20010010, 0x22000010, 0x22010010, |
| 1946 |
0x20000030, 0x20010030, 0x22000030, 0x22010030, |
| 1947 |
0x20040010, 0x20050010, 0x22040010, 0x22050010, |
| 1948 |
0x20040030, 0x20050030, 0x22040030, 0x22050030, |
| 1949 |
0x20002010, 0x20012010, 0x22002010, 0x22012010, |
| 1950 |
0x20002030, 0x20012030, 0x22002030, 0x22012030, |
| 1951 |
0x20042010, 0x20052010, 0x22042010, 0x22052010, |
| 1952 |
0x20042030, 0x20052030, 0x22042030, 0x22052030 |
| 1953 |
); |
| 1954 |
static $pc2mapd4 = array( |
| 1955 |
0x00000000, 0x00000400, 0x01000000, 0x01000400, |
| 1956 |
0x00000000, 0x00000400, 0x01000000, 0x01000400, |
| 1957 |
0x00000100, 0x00000500, 0x01000100, 0x01000500, |
| 1958 |
0x00000100, 0x00000500, 0x01000100, 0x01000500, |
| 1959 |
0x10000000, 0x10000400, 0x11000000, 0x11000400, |
| 1960 |
0x10000000, 0x10000400, 0x11000000, 0x11000400, |
| 1961 |
0x10000100, 0x10000500, 0x11000100, 0x11000500, |
| 1962 |
0x10000100, 0x10000500, 0x11000100, 0x11000500, |
| 1963 |
0x00080000, 0x00080400, 0x01080000, 0x01080400, |
| 1964 |
0x00080000, 0x00080400, 0x01080000, 0x01080400, |
| 1965 |
0x00080100, 0x00080500, 0x01080100, 0x01080500, |
| 1966 |
0x00080100, 0x00080500, 0x01080100, 0x01080500, |
| 1967 |
0x10080000, 0x10080400, 0x11080000, 0x11080400, |
| 1968 |
0x10080000, 0x10080400, 0x11080000, 0x11080400, |
| 1969 |
0x10080100, 0x10080500, 0x11080100, 0x11080500, |
| 1970 |
0x10080100, 0x10080500, 0x11080100, 0x11080500, |
| 1971 |
0x00000008, 0x00000408, 0x01000008, 0x01000408, |
| 1972 |
0x00000008, 0x00000408, 0x01000008, 0x01000408, |
| 1973 |
0x00000108, 0x00000508, 0x01000108, 0x01000508, |
| 1974 |
0x00000108, 0x00000508, 0x01000108, 0x01000508, |
| 1975 |
0x10000008, 0x10000408, 0x11000008, 0x11000408, |
| 1976 |
0x10000008, 0x10000408, 0x11000008, 0x11000408, |
| 1977 |
0x10000108, 0x10000508, 0x11000108, 0x11000508, |
| 1978 |
0x10000108, 0x10000508, 0x11000108, 0x11000508, |
| 1979 |
0x00080008, 0x00080408, 0x01080008, 0x01080408, |
| 1980 |
0x00080008, 0x00080408, 0x01080008, 0x01080408, |
| 1981 |
0x00080108, 0x00080508, 0x01080108, 0x01080508, |
| 1982 |
0x00080108, 0x00080508, 0x01080108, 0x01080508, |
| 1983 |
0x10080008, 0x10080408, 0x11080008, 0x11080408, |
| 1984 |
0x10080008, 0x10080408, 0x11080008, 0x11080408, |
| 1985 |
0x10080108, 0x10080508, 0x11080108, 0x11080508, |
| 1986 |
0x10080108, 0x10080508, 0x11080108, 0x11080508, |
| 1987 |
0x00001000, 0x00001400, 0x01001000, 0x01001400, |
| 1988 |
0x00001000, 0x00001400, 0x01001000, 0x01001400, |
| 1989 |
0x00001100, 0x00001500, 0x01001100, 0x01001500, |
| 1990 |
0x00001100, 0x00001500, 0x01001100, 0x01001500, |
| 1991 |
0x10001000, 0x10001400, 0x11001000, 0x11001400, |
| 1992 |
0x10001000, 0x10001400, 0x11001000, 0x11001400, |
| 1993 |
0x10001100, 0x10001500, 0x11001100, 0x11001500, |
| 1994 |
0x10001100, 0x10001500, 0x11001100, 0x11001500, |
| 1995 |
0x00081000, 0x00081400, 0x01081000, 0x01081400, |
| 1996 |
0x00081000, 0x00081400, 0x01081000, 0x01081400, |
| 1997 |
0x00081100, 0x00081500, 0x01081100, 0x01081500, |
| 1998 |
0x00081100, 0x00081500, 0x01081100, 0x01081500, |
| 1999 |
0x10081000, 0x10081400, 0x11081000, 0x11081400, |
| 2000 |
0x10081000, 0x10081400, 0x11081000, 0x11081400, |
| 2001 |
0x10081100, 0x10081500, 0x11081100, 0x11081500, |
| 2002 |
0x10081100, 0x10081500, 0x11081100, 0x11081500, |
| 2003 |
0x00001008, 0x00001408, 0x01001008, 0x01001408, |
| 2004 |
0x00001008, 0x00001408, 0x01001008, 0x01001408, |
| 2005 |
0x00001108, 0x00001508, 0x01001108, 0x01001508, |
| 2006 |
0x00001108, 0x00001508, 0x01001108, 0x01001508, |
| 2007 |
0x10001008, 0x10001408, 0x11001008, 0x11001408, |
| 2008 |
0x10001008, 0x10001408, 0x11001008, 0x11001408, |
| 2009 |
0x10001108, 0x10001508, 0x11001108, 0x11001508, |
| 2010 |
0x10001108, 0x10001508, 0x11001108, 0x11001508, |
| 2011 |
0x00081008, 0x00081408, 0x01081008, 0x01081408, |
| 2012 |
0x00081008, 0x00081408, 0x01081008, 0x01081408, |
| 2013 |
0x00081108, 0x00081508, 0x01081108, 0x01081508, |
| 2014 |
0x00081108, 0x00081508, 0x01081108, 0x01081508, |
| 2015 |
0x10081008, 0x10081408, 0x11081008, 0x11081408, |
| 2016 |
0x10081008, 0x10081408, 0x11081008, 0x11081408, |
| 2017 |
0x10081108, 0x10081508, 0x11081108, 0x11081508, |
| 2018 |
0x10081108, 0x10081508, 0x11081108, 0x11081508 |
| 2019 |
); |
| 2020 |
|
| 2021 |
// pad the key and remove extra characters as appropriate. |
| 2022 |
$key = str_pad(substr($key, 0, 8), 8, chr(0)); |
| 2023 |
|
| 2024 |
// Perform the PC/1 transformation and compute C and D. |
| 2025 |
$t = unpack('Nl/Nr', $key); |
| 2026 |
list($l, $r) = array($t['l'], $t['r']); |
| 2027 |
$key = ($this->shuffle[$pc1map[$r & 0xFF]] & "\x80\x80\x80\x80\x80\x80\x80\x00") | |
| 2028 |
($this->shuffle[$pc1map[($r >> 8) & 0xFF]] & "\x40\x40\x40\x40\x40\x40\x40\x00") | |
| 2029 |
($this->shuffle[$pc1map[($r >> 16) & 0xFF]] & "\x20\x20\x20\x20\x20\x20\x20\x00") | |
| 2030 |
($this->shuffle[$pc1map[($r >> 24) & 0xFF]] & "\x10\x10\x10\x10\x10\x10\x10\x00") | |
| 2031 |
($this->shuffle[$pc1map[$l & 0xFF]] & "\x08\x08\x08\x08\x08\x08\x08\x00") | |
| 2032 |
($this->shuffle[$pc1map[($l >> 8) & 0xFF]] & "\x04\x04\x04\x04\x04\x04\x04\x00") | |
| 2033 |
($this->shuffle[$pc1map[($l >> 16) & 0xFF]] & "\x02\x02\x02\x02\x02\x02\x02\x00") | |
| 2034 |
($this->shuffle[$pc1map[($l >> 24) & 0xFF]] & "\x01\x01\x01\x01\x01\x01\x01\x00"); |
| 2035 |
$key = unpack('Nc/Nd', $key); |
| 2036 |
$c = ($key['c'] >> 4) & 0x0FFFFFFF; |
| 2037 |
$d = (($key['d'] >> 4) & 0x0FFFFFF0) | ($key['c'] & 0x0F); |
| 2038 |
|
| 2039 |
$keys = array(); |
| 2040 |
for ($i = 0; $i < 16; $i++) { |
| 2041 |
$c <<= $shifts[$i]; |
| 2042 |
$c = ($c | ($c >> 28)) & 0x0FFFFFFF; |
| 2043 |
$d <<= $shifts[$i]; |
| 2044 |
$d = ($d | ($d >> 28)) & 0x0FFFFFFF; |
| 2045 |
|
| 2046 |
// Perform the PC-2 transformation. |
| 2047 |
$cp = $pc2mapc1[$c >> 24] | $pc2mapc2[($c >> 16) & 0xFF] | |
| 2048 |
$pc2mapc3[($c >> 8) & 0xFF] | $pc2mapc4[$c & 0xFF]; |
| 2049 |
$dp = $pc2mapd1[$d >> 24] | $pc2mapd2[($d >> 16) & 0xFF] | |
| 2050 |
$pc2mapd3[($d >> 8) & 0xFF] | $pc2mapd4[$d & 0xFF]; |
| 2051 |
|
| 2052 |
// Reorder: odd bytes/even bytes. Push the result in key schedule. |
| 2053 |
$keys[] = array( |
| 2054 |
($cp & 0xFF000000) | (($cp << 8) & 0x00FF0000) | |
| 2055 |
(($dp >> 16) & 0x0000FF00) | (($dp >> 8) & 0x000000FF), |
| 2056 |
(($cp << 8) & 0xFF000000) | (($cp << 16) & 0x00FF0000) | |
| 2057 |
(($dp >> 8) & 0x0000FF00) | ($dp & 0x000000FF) |
| 2058 |
); |
| 2059 |
} |
| 2060 |
|
| 2061 |
$keys = array( |
| 2062 |
CRYPT_DES_ENCRYPT => $keys, |
| 2063 |
CRYPT_DES_DECRYPT => array_reverse($keys), |
| 2064 |
CRYPT_DES_ENCRYPT_1DIM => array(), |
| 2065 |
CRYPT_DES_DECRYPT_1DIM => array() |
| 2066 |
); |
| 2067 |
|
| 2068 |
// Generate 1-dim arrays for inline en/decrypting |
| 2069 |
for ($i = 0; $i < 16; ++$i) { |
| 2070 |
$keys[CRYPT_DES_ENCRYPT_1DIM][] = $keys[CRYPT_DES_ENCRYPT][$i][0]; |
| 2071 |
$keys[CRYPT_DES_ENCRYPT_1DIM][] = $keys[CRYPT_DES_ENCRYPT][$i][1]; |
| 2072 |
$keys[CRYPT_DES_DECRYPT_1DIM][] = $keys[CRYPT_DES_DECRYPT][$i][0]; |
| 2073 |
$keys[CRYPT_DES_DECRYPT_1DIM][] = $keys[CRYPT_DES_DECRYPT][$i][1]; |
| 2074 |
} |
| 2075 |
|
| 2076 |
return $keys; |
| 2077 |
} |
| 2078 |
|
| 2079 |
/** |
| 2080 |
* String Shift |
| 2081 |
* |
| 2082 |
* Inspired by array_shift |
| 2083 |
* |
| 2084 |
* @param String $string |
| 2085 |
* @return String |
| 2086 |
* @access private |
| 2087 |
*/ |
| 2088 |
function _string_shift(&$string) |
| 2089 |
{ |
| 2090 |
$substr = substr($string, 0, 8); |
| 2091 |
$string = substr($string, 8); |
| 2092 |
return $substr; |
| 2093 |
} |
| 2094 |
|
| 2095 |
/** |
| 2096 |
* Creates performance-optimized function for de/encrypt(), storing it in $this->inline_crypt |
| 2097 |
* |
| 2098 |
* @param optional Integer $des_rounds (1 = DES[default], 3 = TribleDES) |
| 2099 |
* @access private |
| 2100 |
*/ |
| 2101 |
function inline_crypt_setup($des_rounds = 1) |
| 2102 |
{ |
| 2103 |
$lambda_functions =& Crypt_DES::get_lambda_functions(); |
| 2104 |
$block_size = 8; |
| 2105 |
$mode = $this->mode; |
| 2106 |
|
| 2107 |
$code_hash = "$mode,$des_rounds"; |
| 2108 |
|
| 2109 |
if (!isset($lambda_functions[$code_hash])) { |
| 2110 |
// Generating encrypt code: |
| 2111 |
$ki = -1; |
| 2112 |
$init_cryptBlock = ' |
| 2113 |
$shuffle = $self->shuffle; |
| 2114 |
$invipmap = $self->invipmap; |
| 2115 |
$ipmap = $self->ipmap; |
| 2116 |
$sbox1 = $self->sbox1; |
| 2117 |
$sbox2 = $self->sbox2; |
| 2118 |
$sbox3 = $self->sbox3; |
| 2119 |
$sbox4 = $self->sbox4; |
| 2120 |
$sbox5 = $self->sbox5; |
| 2121 |
$sbox6 = $self->sbox6; |
| 2122 |
$sbox7 = $self->sbox7; |
| 2123 |
$sbox8 = $self->sbox8; |
| 2124 |
'; |
| 2125 |
|
| 2126 |
$_cryptBlock = '$in = unpack("N*", $in);'."\n"; |
| 2127 |
// Do the initial IP permutation. |
| 2128 |
$_cryptBlock .= ' |
| 2129 |
$l = $in[1]; |
| 2130 |
$r = $in[2]; |
| 2131 |
$in = unpack("N*", |
| 2132 |
($shuffle[$ipmap[ $r & 0xFF]] & "\x80\x80\x80\x80\x80\x80\x80\x80") | |
| 2133 |
($shuffle[$ipmap[($r >> 8) & 0xFF]] & "\x40\x40\x40\x40\x40\x40\x40\x40") | |
| 2134 |
($shuffle[$ipmap[($r >> 16) & 0xFF]] & "\x20\x20\x20\x20\x20\x20\x20\x20") | |
| 2135 |
($shuffle[$ipmap[($r >> 24) & 0xFF]] & "\x10\x10\x10\x10\x10\x10\x10\x10") | |
| 2136 |
($shuffle[$ipmap[ $l & 0xFF]] & "\x08\x08\x08\x08\x08\x08\x08\x08") | |
| 2137 |
($shuffle[$ipmap[($l >> 8) & 0xFF]] & "\x04\x04\x04\x04\x04\x04\x04\x04") | |
| 2138 |
($shuffle[$ipmap[($l >> 16) & 0xFF]] & "\x02\x02\x02\x02\x02\x02\x02\x02") | |
| 2139 |
($shuffle[$ipmap[($l >> 24) & 0xFF]] & "\x01\x01\x01\x01\x01\x01\x01\x01") |
| 2140 |
); |
| 2141 |
|
| 2142 |
'.'' /* Extract L0 and R0 */ .' |
| 2143 |
$l = $in[1]; |
| 2144 |
$r = $in[2]; |
| 2145 |
'; |
| 2146 |
|
| 2147 |
$l = 'l'; |
| 2148 |
$r = 'r'; |
| 2149 |
for ($des_round = 0; $des_round < $des_rounds; ++$des_round) { |
| 2150 |
// Perform the 16 steps. |
| 2151 |
// start of "the Feistel (F) function" - see the following URL: |
| 2152 |
// http://en.wikipedia.org/wiki/Image:Data_Encryption_Standard_InfoBox_Diagram.png |
| 2153 |
// Merge key schedule. |
| 2154 |
for ($i = 0; $i < 8; ++$i) { |
| 2155 |
$_cryptBlock .= ' |
| 2156 |
$b1 = (($' . $r . ' >> 3) & 0x1FFFFFFF) ^ ($' . $r . ' << 29) ^ $k_'.(++$ki).'; |
| 2157 |
$b2 = (($' . $r . ' >> 31) & 0x00000001) ^ ($' . $r . ' << 1) ^ $k_'.(++$ki).'; |
| 2158 |
$' . $l . ' = $sbox1[($b1 >> 24) & 0x3F] ^ $sbox2[($b2 >> 24) & 0x3F] ^ |
| 2159 |
$sbox3[($b1 >> 16) & 0x3F] ^ $sbox4[($b2 >> 16) & 0x3F] ^ |
| 2160 |
$sbox5[($b1 >> 8) & 0x3F] ^ $sbox6[($b2 >> 8) & 0x3F] ^ |
| 2161 |
$sbox7[ $b1 & 0x3F] ^ $sbox8[ $b2 & 0x3F] ^ $' . $l . '; |
| 2162 |
|
| 2163 |
$b1 = (($' . $l . ' >> 3) & 0x1FFFFFFF) ^ ($' . $l . ' << 29) ^ $k_'.(++$ki).'; |
| 2164 |
$b2 = (($' . $l . ' >> 31) & 0x00000001) ^ ($' . $l . ' << 1) ^ $k_'.(++$ki).'; |
| 2165 |
$' . $r . ' = $sbox1[($b1 >> 24) & 0x3F] ^ $sbox2[($b2 >> 24) & 0x3F] ^ |
| 2166 |
$sbox3[($b1 >> 16) & 0x3F] ^ $sbox4[($b2 >> 16) & 0x3F] ^ |
| 2167 |
$sbox5[($b1 >> 8) & 0x3F] ^ $sbox6[($b2 >> 8) & 0x3F] ^ |
| 2168 |
$sbox7[ $b1 & 0x3F] ^ $sbox8[ $b2 & 0x3F] ^ $' . $r . '; |
| 2169 |
'; |
| 2170 |
} |
| 2171 |
|
| 2172 |
// Last step should not permute L & R. |
| 2173 |
$t = $l; |
| 2174 |
$l = $r; |
| 2175 |
$r = $t; |
| 2176 |
} |
| 2177 |
|
| 2178 |
// Perform the inverse IP permutation. |
| 2179 |
$_cryptBlock .= '$in = ( |
| 2180 |
($shuffle[$invipmap[($' . $r . ' >> 24) & 0xFF]] & "\x80\x80\x80\x80\x80\x80\x80\x80") | |
| 2181 |
($shuffle[$invipmap[($' . $l . ' >> 24) & 0xFF]] & "\x40\x40\x40\x40\x40\x40\x40\x40") | |
| 2182 |
($shuffle[$invipmap[($' . $r . ' >> 16) & 0xFF]] & "\x20\x20\x20\x20\x20\x20\x20\x20") | |
| 2183 |
($shuffle[$invipmap[($' . $l . ' >> 16) & 0xFF]] & "\x10\x10\x10\x10\x10\x10\x10\x10") | |
| 2184 |
($shuffle[$invipmap[($' . $r . ' >> 8) & 0xFF]] & "\x08\x08\x08\x08\x08\x08\x08\x08") | |
| 2185 |
($shuffle[$invipmap[($' . $l . ' >> 8) & 0xFF]] & "\x04\x04\x04\x04\x04\x04\x04\x04") | |
| 2186 |
($shuffle[$invipmap[ $' . $r . ' & 0xFF]] & "\x02\x02\x02\x02\x02\x02\x02\x02") | |
| 2187 |
($shuffle[$invipmap[ $' . $l . ' & 0xFF]] & "\x01\x01\x01\x01\x01\x01\x01\x01") |
| 2188 |
); |
| 2189 |
'; |
| 2190 |
|
| 2191 |
// Generating mode of operation code: |
| 2192 |
switch ($mode) { |
| 2193 |
case CRYPT_DES_MODE_ECB: |
| 2194 |
$encrypt = $init_cryptBlock . ' |
| 2195 |
extract($self->keys[CRYPT_DES_ENCRYPT_1DIM], EXTR_PREFIX_ALL, "k"); |
| 2196 |
$ciphertext = ""; |
| 2197 |
$plaintext_len = strlen($text); |
| 2198 |
|
| 2199 |
for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') { |
| 2200 |
$in = substr($text, $i, '.$block_size.'); |
| 2201 |
'.$_cryptBlock.' |
| 2202 |
$ciphertext.= $in; |
| 2203 |
} |
| 2204 |
|
| 2205 |
return $ciphertext; |
| 2206 |
'; |
| 2207 |
|
| 2208 |
$decrypt = $init_cryptBlock . ' |
| 2209 |
extract($self->keys[CRYPT_DES_DECRYPT_1DIM], EXTR_PREFIX_ALL, "k"); |
| 2210 |
$plaintext = ""; |
| 2211 |
$ciphertext_len = strlen($text); |
| 2212 |
|
| 2213 |
for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') { |
| 2214 |
$in = substr($text, $i, '.$block_size.'); |
| 2215 |
'.$_cryptBlock.' |
| 2216 |
$plaintext.= $in; |
| 2217 |
} |
| 2218 |
|
| 2219 |
return $self->_unpad($plaintext); |
| 2220 |
'; |
| 2221 |
break; |
| 2222 |
case CRYPT_DES_MODE_CBC: |
| 2223 |
$encrypt = $init_cryptBlock . ' |
| 2224 |
extract($self->keys[CRYPT_DES_ENCRYPT_1DIM], EXTR_PREFIX_ALL, "k"); |
| 2225 |
$ciphertext = ""; |
| 2226 |
$plaintext_len = strlen($text); |
| 2227 |
|
| 2228 |
$in = $self->encryptIV; |
| 2229 |
|
| 2230 |
for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') { |
| 2231 |
$in = substr($text, $i, '.$block_size.') ^ $in; |
| 2232 |
'.$_cryptBlock.' |
| 2233 |
$ciphertext.= $in; |
| 2234 |
} |
| 2235 |
|
| 2236 |
if ($self->continuousBuffer) { |
| 2237 |
$self->encryptIV = $in; |
| 2238 |
} |
| 2239 |
|
| 2240 |
return $ciphertext; |
| 2241 |
'; |
| 2242 |
|
| 2243 |
$decrypt = $init_cryptBlock . ' |
| 2244 |
extract($self->keys[CRYPT_DES_DECRYPT_1DIM], EXTR_PREFIX_ALL, "k"); |
| 2245 |
$plaintext = ""; |
| 2246 |
$ciphertext_len = strlen($text); |
| 2247 |
|
| 2248 |
$iv = $self->decryptIV; |
| 2249 |
|
| 2250 |
for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') { |
| 2251 |
$in = $block = substr($text, $i, '.$block_size.'); |
| 2252 |
'.$_cryptBlock.' |
| 2253 |
$plaintext.= $in ^ $iv; |
| 2254 |
$iv = $block; |
| 2255 |
} |
| 2256 |
|
| 2257 |
if ($self->continuousBuffer) { |
| 2258 |
$self->decryptIV = $iv; |
| 2259 |
} |
| 2260 |
|
| 2261 |
return $self->_unpad($plaintext); |
| 2262 |
'; |
| 2263 |
break; |
| 2264 |
case CRYPT_DES_MODE_CTR: |
| 2265 |
$encrypt = $init_cryptBlock . ' |
| 2266 |
extract($self->keys[CRYPT_DES_ENCRYPT_1DIM], EXTR_PREFIX_ALL, "k"); |
| 2267 |
$ciphertext = ""; |
| 2268 |
$plaintext_len = strlen($text); |
| 2269 |
$xor = $self->encryptIV; |
| 2270 |
$buffer = &$self->enbuffer; |
| 2271 |
|
| 2272 |
if (strlen($buffer["encrypted"])) { |
| 2273 |
for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') { |
| 2274 |
$block = substr($text, $i, '.$block_size.'); |
| 2275 |
if (strlen($block) > strlen($buffer["encrypted"])) { |
| 2276 |
$in = $self->_generate_xor($xor); |
| 2277 |
'.$_cryptBlock.' |
| 2278 |
$buffer["encrypted"].= $in; |
| 2279 |
} |
| 2280 |
$key = $self->_string_shift($buffer["encrypted"]); |
| 2281 |
$ciphertext.= $block ^ $key; |
| 2282 |
} |
| 2283 |
} else { |
| 2284 |
for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') { |
| 2285 |
$block = substr($text, $i, '.$block_size.'); |
| 2286 |
$in = $self->_generate_xor($xor); |
| 2287 |
'.$_cryptBlock.' |
| 2288 |
$key = $in; |
| 2289 |
$ciphertext.= $block ^ $key; |
| 2290 |
} |
| 2291 |
} |
| 2292 |
if ($self->continuousBuffer) { |
| 2293 |
$self->encryptIV = $xor; |
| 2294 |
if ($start = $plaintext_len % '.$block_size.') { |
| 2295 |
$buffer["encrypted"] = substr($key, $start) . $buffer["encrypted"]; |
| 2296 |
} |
| 2297 |
} |
| 2298 |
|
| 2299 |
return $ciphertext; |
| 2300 |
'; |
| 2301 |
|
| 2302 |
$decrypt = $init_cryptBlock . ' |
| 2303 |
extract($self->keys[CRYPT_DES_ENCRYPT_1DIM], EXTR_PREFIX_ALL, "k"); |
| 2304 |
$plaintext = ""; |
| 2305 |
$ciphertext_len = strlen($text); |
| 2306 |
$xor = $self->decryptIV; |
| 2307 |
$buffer = &$self->debuffer; |
| 2308 |
|
| 2309 |
if (strlen($buffer["ciphertext"])) { |
| 2310 |
for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') { |
| 2311 |
$block = substr($text, $i, '.$block_size.'); |
| 2312 |
if (strlen($block) > strlen($buffer["ciphertext"])) { |
| 2313 |
$in = $self->_generate_xor($xor); |
| 2314 |
'.$_cryptBlock.' |
| 2315 |
$buffer["ciphertext"].= $in; |
| 2316 |
} |
| 2317 |
$key = $self->_string_shift($buffer["ciphertext"]); |
| 2318 |
$plaintext.= $block ^ $key; |
| 2319 |
} |
| 2320 |
} else { |
| 2321 |
for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') { |
| 2322 |
$block = substr($text, $i, '.$block_size.'); |
| 2323 |
$in = $self->_generate_xor($xor); |
| 2324 |
'.$_cryptBlock.' |
| 2325 |
$key = $in; |
| 2326 |
$plaintext.= $block ^ $key; |
| 2327 |
} |
| 2328 |
} |
| 2329 |
if ($self->continuousBuffer) { |
| 2330 |
$self->decryptIV = $xor; |
| 2331 |
if ($start = $ciphertext_len % '.$block_size.') { |
| 2332 |
$buffer["ciphertext"] = substr($key, $start) . $buffer["ciphertext"]; |
| 2333 |
} |
| 2334 |
} |
| 2335 |
|
| 2336 |
return $plaintext; |
| 2337 |
'; |
| 2338 |
break; |
| 2339 |
case CRYPT_DES_MODE_CFB: |
| 2340 |
$encrypt = $init_cryptBlock . ' |
| 2341 |
extract($self->keys[CRYPT_DES_ENCRYPT_1DIM], EXTR_PREFIX_ALL, "k"); |
| 2342 |
$ciphertext = ""; |
| 2343 |
$buffer = &$self->enbuffer; |
| 2344 |
|
| 2345 |
if ($self->continuousBuffer) { |
| 2346 |
$iv = &$self->encryptIV; |
| 2347 |
$pos = &$buffer["pos"]; |
| 2348 |
} else { |
| 2349 |
$iv = $self->encryptIV; |
| 2350 |
$pos = 0; |
| 2351 |
} |
| 2352 |
$len = strlen($text); |
| 2353 |
$i = 0; |
| 2354 |
if ($pos) { |
| 2355 |
$orig_pos = $pos; |
| 2356 |
$max = '.$block_size.' - $pos; |
| 2357 |
if ($len >= $max) { |
| 2358 |
$i = $max; |
| 2359 |
$len-= $max; |
| 2360 |
$pos = 0; |
| 2361 |
} else { |
| 2362 |
$i = $len; |
| 2363 |
$pos+= $len; |
| 2364 |
$len = 0; |
| 2365 |
} |
| 2366 |
$ciphertext = substr($iv, $orig_pos) ^ $text; |
| 2367 |
$iv = substr_replace($iv, $ciphertext, $orig_pos, $i); |
| 2368 |
} |
| 2369 |
while ($len >= '.$block_size.') { |
| 2370 |
$in = $iv; |
| 2371 |
'.$_cryptBlock.'; |
| 2372 |
$iv = $in ^ substr($text, $i, '.$block_size.'); |
| 2373 |
$ciphertext.= $iv; |
| 2374 |
$len-= '.$block_size.'; |
| 2375 |
$i+= '.$block_size.'; |
| 2376 |
} |
| 2377 |
if ($len) { |
| 2378 |
$in = $iv; |
| 2379 |
'.$_cryptBlock.' |
| 2380 |
$iv = $in; |
| 2381 |
$block = $iv ^ substr($text, $i); |
| 2382 |
$iv = substr_replace($iv, $block, 0, $len); |
| 2383 |
$ciphertext.= $block; |
| 2384 |
$pos = $len; |
| 2385 |
} |
| 2386 |
return $ciphertext; |
| 2387 |
'; |
| 2388 |
|
| 2389 |
$decrypt = $init_cryptBlock . ' |
| 2390 |
extract($self->keys[CRYPT_DES_ENCRYPT_1DIM], EXTR_PREFIX_ALL, "k"); |
| 2391 |
$plaintext = ""; |
| 2392 |
$buffer = &$self->debuffer; |
| 2393 |
|
| 2394 |
if ($self->continuousBuffer) { |
| 2395 |
$iv = &$self->decryptIV; |
| 2396 |
$pos = &$buffer["pos"]; |
| 2397 |
} else { |
| 2398 |
$iv = $self->decryptIV; |
| 2399 |
$pos = 0; |
| 2400 |
} |
| 2401 |
$len = strlen($text); |
| 2402 |
$i = 0; |
| 2403 |
if ($pos) { |
| 2404 |
$orig_pos = $pos; |
| 2405 |
$max = '.$block_size.' - $pos; |
| 2406 |
if ($len >= $max) { |
| 2407 |
$i = $max; |
| 2408 |
$len-= $max; |
| 2409 |
$pos = 0; |
| 2410 |
} else { |
| 2411 |
$i = $len; |
| 2412 |
$pos+= $len; |
| 2413 |
$len = 0; |
| 2414 |
} |
| 2415 |
$plaintext = substr($iv, $orig_pos) ^ $text; |
| 2416 |
$iv = substr_replace($iv, substr($text, 0, $i), $orig_pos, $i); |
| 2417 |
} |
| 2418 |
while ($len >= '.$block_size.') { |
| 2419 |
$in = $iv; |
| 2420 |
'.$_cryptBlock.' |
| 2421 |
$iv = $in; |
| 2422 |
$cb = substr($text, $i, '.$block_size.'); |
| 2423 |
$plaintext.= $iv ^ $cb; |
| 2424 |
$iv = $cb; |
| 2425 |
$len-= '.$block_size.'; |
| 2426 |
$i+= '.$block_size.'; |
| 2427 |
} |
| 2428 |
if ($len) { |
| 2429 |
$in = $iv; |
| 2430 |
'.$_cryptBlock.' |
| 2431 |
$iv = $in; |
| 2432 |
$plaintext.= $iv ^ substr($text, $i); |
| 2433 |
$iv = substr_replace($iv, substr($text, $i), 0, $len); |
| 2434 |
$pos = $len; |
| 2435 |
} |
| 2436 |
|
| 2437 |
return $plaintext; |
| 2438 |
'; |
| 2439 |
break; |
| 2440 |
case CRYPT_DES_MODE_OFB: |
| 2441 |
$encrypt = $init_cryptBlock . ' |
| 2442 |
extract($self->keys[CRYPT_DES_ENCRYPT_1DIM], EXTR_PREFIX_ALL, "k"); |
| 2443 |
$ciphertext = ""; |
| 2444 |
$plaintext_len = strlen($text); |
| 2445 |
$xor = $self->encryptIV; |
| 2446 |
$buffer = &$self->enbuffer; |
| 2447 |
|
| 2448 |
if (strlen($buffer["xor"])) { |
| 2449 |
for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') { |
| 2450 |
$block = substr($text, $i, '.$block_size.'); |
| 2451 |
if (strlen($block) > strlen($buffer["xor"])) { |
| 2452 |
$in = $xor; |
| 2453 |
'.$_cryptBlock.' |
| 2454 |
$xor = $in; |
| 2455 |
$buffer["xor"].= $xor; |
| 2456 |
} |
| 2457 |
$key = $self->_string_shift($buffer["xor"]); |
| 2458 |
$ciphertext.= $block ^ $key; |
| 2459 |
} |
| 2460 |
} else { |
| 2461 |
for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') { |
| 2462 |
$in = $xor; |
| 2463 |
'.$_cryptBlock.' |
| 2464 |
$xor = $in; |
| 2465 |
$ciphertext.= substr($text, $i, '.$block_size.') ^ $xor; |
| 2466 |
} |
| 2467 |
$key = $xor; |
| 2468 |
} |
| 2469 |
if ($self->continuousBuffer) { |
| 2470 |
$self->encryptIV = $xor; |
| 2471 |
if ($start = $plaintext_len % '.$block_size.') { |
| 2472 |
$buffer["xor"] = substr($key, $start) . $buffer["xor"]; |
| 2473 |
} |
| 2474 |
} |
| 2475 |
return $ciphertext; |
| 2476 |
'; |
| 2477 |
|
| 2478 |
$decrypt = $init_cryptBlock . ' |
| 2479 |
extract($self->keys[CRYPT_DES_ENCRYPT_1DIM], EXTR_PREFIX_ALL, "k"); |
| 2480 |
$plaintext = ""; |
| 2481 |
$ciphertext_len = strlen($text); |
| 2482 |
$xor = $self->decryptIV; |
| 2483 |
$buffer = &$self->debuffer; |
| 2484 |
|
| 2485 |
if (strlen($buffer["xor"])) { |
| 2486 |
for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') { |
| 2487 |
$block = substr($text, $i, '.$block_size.'); |
| 2488 |
if (strlen($block) > strlen($buffer["xor"])) { |
| 2489 |
$in = $xor; |
| 2490 |
'.$_cryptBlock.' |
| 2491 |
$xor = $in; |
| 2492 |
$buffer["xor"].= $xor; |
| 2493 |
} |
| 2494 |
$key = $self->_string_shift($buffer["xor"]); |
| 2495 |
$plaintext.= $block ^ $key; |
| 2496 |
} |
| 2497 |
} else { |
| 2498 |
for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') { |
| 2499 |
$in = $xor; |
| 2500 |
'.$_cryptBlock.' |
| 2501 |
$xor = $in; |
| 2502 |
$plaintext.= substr($text, $i, '.$block_size.') ^ $xor; |
| 2503 |
} |
| 2504 |
$key = $xor; |
| 2505 |
} |
| 2506 |
if ($self->continuousBuffer) { |
| 2507 |
$self->decryptIV = $xor; |
| 2508 |
if ($start = $ciphertext_len % '.$block_size.') { |
| 2509 |
$buffer["xor"] = substr($key, $start) . $buffer["xor"]; |
| 2510 |
} |
| 2511 |
} |
| 2512 |
return $plaintext; |
| 2513 |
'; |
| 2514 |
break; |
| 2515 |
} |
| 2516 |
$lambda_functions[$code_hash] = create_function('$action, &$self, $text', 'if ($action == "encrypt") { '.$encrypt.' } else { '.$decrypt.' }'); |
| 2517 |
} |
| 2518 |
$this->inline_crypt = $lambda_functions[$code_hash]; |
| 2519 |
} |
| 2520 |
|
| 2521 |
/** |
| 2522 |
* Holds the lambda_functions table (classwide) |
| 2523 |
* |
| 2524 |
* @see inline_crypt_setup() |
| 2525 |
* @return Array |
| 2526 |
* @access private |
| 2527 |
*/ |
| 2528 |
function &get_lambda_functions() |
| 2529 |
{ |
| 2530 |
static $functions = array(); |
| 2531 |
return $functions; |
| 2532 |
} |
| 2533 |
} |
| 2534 |
|
| 2535 |
// vim: ts=4:sw=4:et: |
| 2536 |
// vim6: fdl=1: |
| 2537 |
|
