1469 lines
60 KiB
PHP
1469 lines
60 KiB
PHP
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<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* Pure-PHP implementation of Blowfish.
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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/Blowfish Wikipedia description of Blowfish}
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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/Blowfish.php');
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*
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* $blowfish = new Crypt_Blowfish();
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*
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* $blowfish->setKey('12345678901234567890123456789012');
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*
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* $plaintext = str_repeat('a', 1024);
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*
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* echo $blowfish->decrypt($blowfish->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_Blowfish
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* @author Jim Wigginton <terrafrost@php.net>
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* @author Hans-Juergen Petrich <petrich@tronic-media.com>
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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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* @version 1.0
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* @link http://phpseclib.sourceforge.net
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*/
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/**#@+
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* @access public
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* @see Crypt_Blowfish::encrypt()
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* @see Crypt_Blowfish::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_BLOWFISH_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_BLOWFISH_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_BLOWFISH_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_BLOWFISH_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_BLOWFISH_MODE_OFB', 4);
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/**#@-*/
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/**#@+
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* @access private
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* @see Crypt_Blowfish::Crypt_Blowfish()
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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_BLOWFISH_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_BLOWFISH_MODE_MCRYPT', 2);
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/**#@-*/
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/**
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* Pure-PHP implementation of Blowfish.
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*
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* @author Jim Wigginton <terrafrost@php.net>
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* @author Hans-Juergen Petrich <petrich@tronic-media.com>
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* @version 1.0
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* @access public
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* @package Crypt_Blowfish
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*/
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class Crypt_Blowfish {
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/**
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* The Key as String
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*
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* @see Crypt_Blowfish::setKey()
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* @var Array
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* @access private
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*/
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var $key = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
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/**
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* The Encryption Mode
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*
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* @see Crypt_Blowfish::Crypt_Blowfish()
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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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* Continuous Buffer status
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*
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* @see Crypt_Blowfish::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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* Padding status
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*
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* @see Crypt_Blowfish::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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* The Initialization Vector
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*
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* @see Crypt_Blowfish::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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* A "sliding" Initialization Vector
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*
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* @see Crypt_Blowfish::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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* A "sliding" Initialization Vector
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*
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* @see Crypt_Blowfish::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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* 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_Blowfish::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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* 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_Blowfish::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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* Does the enmcrypt resource need to be (re)initialized?
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*
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* @see Crypt_Blowfish::setKey()
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* @see Crypt_Blowfish::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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* Does the demcrypt resource need to be (re)initialized?
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*
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* @see Crypt_Blowfish::setKey()
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* @see Crypt_Blowfish::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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* Is the mode one that is paddable?
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*
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* @see Crypt_Blowfish::Crypt_Blowfish()
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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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* Encryption buffer for CTR, OFB and CFB modes
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*
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* @see Crypt_Blowfish::encrypt()
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* @var Array
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* @access private
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*/
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var $enbuffer = array('encrypted' => '', 'xor' => '', 'pos' => 0, 'enmcrypt_init' => true);
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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_Blowfish::decrypt()
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* @var Array
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* @access private
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*/
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var $debuffer = array('ciphertext' => '', 'xor' => '', 'pos' => 0, 'demcrypt_init' => true);
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/**
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* mcrypt resource for CFB mode
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*
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* @see Crypt_Blowfish::encrypt()
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* @see Crypt_Blowfish::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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* Performance-optimized callback function for en/decrypt()
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*
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* @var Callback
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* @access private
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*/
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var $inline_crypt;
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/**
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* The fixed subkeys boxes ($sbox0 - $sbox3) with 256 entries each
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*
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* S-Box 1
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*
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* @access private
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* @var array
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*/
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var $sbox0 = array (
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0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
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0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16, 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
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0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee, 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
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0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef, 0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
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0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60, 0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
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0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce, 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
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0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e, 0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
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0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193, 0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
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0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88, 0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
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0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e, 0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
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0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3, 0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
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0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88, 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
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0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6, 0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
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0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b, 0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
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0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba, 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
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0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f, 0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
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0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3, 0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
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0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279, 0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
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0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab, 0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
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0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db, 0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
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||
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0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0, 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
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||
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0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790, 0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
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||
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0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4, 0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
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0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7, 0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
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||
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0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad, 0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
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||
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0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299, 0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
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||
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0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477, 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
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0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49, 0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
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||
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0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa, 0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
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||
|
|
0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41, 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
|
||
|
|
0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400, 0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
|
||
|
|
0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664, 0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* S-Box 1
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
* @var array
|
||
|
|
*/
|
||
|
|
var $sbox1 = array(
|
||
|
|
0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623, 0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266,
|
||
|
|
0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1, 0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e,
|
||
|
|
0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6, 0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
|
||
|
|
0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e, 0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1,
|
||
|
|
0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737, 0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
|
||
|
|
0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff, 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
|
||
|
|
0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701, 0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7,
|
||
|
|
0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41, 0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331,
|
||
|
|
0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf, 0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
|
||
|
|
0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e, 0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
|
||
|
|
0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c, 0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2,
|
||
|
|
0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16, 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
|
||
|
|
0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b, 0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509,
|
||
|
|
0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e, 0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3,
|
||
|
|
0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f, 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
|
||
|
|
0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4, 0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960,
|
||
|
|
0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66, 0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28,
|
||
|
|
0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802, 0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
|
||
|
|
0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510, 0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf,
|
||
|
|
0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14, 0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
|
||
|
|
0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50, 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
|
||
|
|
0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8, 0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281,
|
||
|
|
0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99, 0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696,
|
||
|
|
0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128, 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
|
||
|
|
0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0, 0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
|
||
|
|
0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105, 0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250,
|
||
|
|
0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3, 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
|
||
|
|
0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00, 0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061,
|
||
|
|
0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb, 0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e,
|
||
|
|
0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735, 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
|
||
|
|
0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9, 0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340,
|
||
|
|
0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20, 0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* S-Box 2
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
* @var array
|
||
|
|
*/
|
||
|
|
var $sbox2 = array(
|
||
|
|
0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934, 0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
|
||
|
|
0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af, 0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840,
|
||
|
|
0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45, 0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
|
||
|
|
0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a, 0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
|
||
|
|
0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee, 0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
|
||
|
|
0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42, 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
|
||
|
|
0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2, 0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
|
||
|
|
0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527, 0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b,
|
||
|
|
0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33, 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
|
||
|
|
0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3, 0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
|
||
|
|
0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17, 0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564,
|
||
|
|
0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b, 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
|
||
|
|
0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922, 0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
|
||
|
|
0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0, 0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e,
|
||
|
|
0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37, 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
|
||
|
|
0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804, 0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
|
||
|
|
0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3, 0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb,
|
||
|
|
0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d, 0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
|
||
|
|
0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350, 0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
|
||
|
|
0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a, 0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
|
||
|
|
0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d, 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
|
||
|
|
0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f, 0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
|
||
|
|
0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2, 0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9,
|
||
|
|
0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2, 0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
|
||
|
|
0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e, 0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
|
||
|
|
0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10, 0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169,
|
||
|
|
0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52, 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
|
||
|
|
0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5, 0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
|
||
|
|
0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634, 0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76,
|
||
|
|
0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24, 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
|
||
|
|
0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4, 0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
|
||
|
|
0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837, 0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* S-Box 3
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
* @var array
|
||
|
|
*/
|
||
|
|
var $sbox3 = array(
|
||
|
|
0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b, 0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe,
|
||
|
|
0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b, 0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
|
||
|
|
0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8, 0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
|
||
|
|
0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304, 0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22,
|
||
|
|
0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4, 0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
|
||
|
|
0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9, 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
|
||
|
|
0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593, 0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51,
|
||
|
|
0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28, 0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
|
||
|
|
0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b, 0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
|
||
|
|
0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c, 0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
|
||
|
|
0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a, 0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
|
||
|
|
0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb, 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
|
||
|
|
0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991, 0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32,
|
||
|
|
0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680, 0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
|
||
|
|
0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae, 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
|
||
|
|
0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5, 0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47,
|
||
|
|
0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370, 0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
|
||
|
|
0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84, 0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
|
||
|
|
0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8, 0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd,
|
||
|
|
0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9, 0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
|
||
|
|
0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38, 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
|
||
|
|
0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c, 0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525,
|
||
|
|
0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1, 0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
|
||
|
|
0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964, 0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
|
||
|
|
0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8, 0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
|
||
|
|
0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f, 0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
|
||
|
|
0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02, 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
|
||
|
|
0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614, 0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a,
|
||
|
|
0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6, 0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
|
||
|
|
0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0, 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
|
||
|
|
0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e, 0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9,
|
||
|
|
0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f, 0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* P-Array consists of 18 32-bit subkeys
|
||
|
|
*
|
||
|
|
* @var array $parray
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
var $parray = array(
|
||
|
|
0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344, 0xa4093822, 0x299f31d0,
|
||
|
|
0x082efa98, 0xec4e6c89, 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
|
||
|
|
0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917, 0x9216d5d9, 0x8979fb1b
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The BCTX-working Array
|
||
|
|
*
|
||
|
|
* Holds the expanded key [p] and the key-depended s-boxes [sb]
|
||
|
|
*
|
||
|
|
* @var array $bctx
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
var $bctx = array();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Default Constructor.
|
||
|
|
*
|
||
|
|
* Determines whether or not the mcrypt extension should be used.
|
||
|
|
* If not explictly set, CRYPT_BLOWFISH_MODE_CBC will be used.
|
||
|
|
*
|
||
|
|
* @param optional Integer $mode
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function Crypt_Blowfish($mode = CRYPT_BLOWFISH_MODE_CBC)
|
||
|
|
{
|
||
|
|
if ( !defined('CRYPT_BLOWFISH_MODE') ) {
|
||
|
|
switch (true) {
|
||
|
|
case extension_loaded('mcrypt') && in_array('blowfish', mcrypt_list_algorithms()):
|
||
|
|
define('CRYPT_BLOWFISH_MODE', CRYPT_BLOWFISH_MODE_MCRYPT);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
define('CRYPT_BLOWFISH_MODE', CRYPT_BLOWFISH_MODE_INTERNAL);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
switch ( CRYPT_BLOWFISH_MODE ) {
|
||
|
|
case CRYPT_BLOWFISH_MODE_MCRYPT:
|
||
|
|
switch ($mode) {
|
||
|
|
case CRYPT_BLOWFISH_MODE_ECB:
|
||
|
|
$this->paddable = true;
|
||
|
|
$this->mode = MCRYPT_MODE_ECB;
|
||
|
|
break;
|
||
|
|
case CRYPT_BLOWFISH_MODE_CTR:
|
||
|
|
$this->mode = 'ctr';
|
||
|
|
break;
|
||
|
|
case CRYPT_BLOWFISH_MODE_CFB:
|
||
|
|
$this->mode = 'ncfb';
|
||
|
|
$this->ecb = mcrypt_module_open(MCRYPT_BLOWFISH, '', MCRYPT_MODE_ECB, '');
|
||
|
|
break;
|
||
|
|
case CRYPT_BLOWFISH_MODE_OFB:
|
||
|
|
$this->mode = MCRYPT_MODE_NOFB;
|
||
|
|
break;
|
||
|
|
case CRYPT_BLOWFISH_MODE_CBC:
|
||
|
|
default:
|
||
|
|
$this->paddable = true;
|
||
|
|
$this->mode = MCRYPT_MODE_CBC;
|
||
|
|
}
|
||
|
|
$this->enmcrypt = mcrypt_module_open(MCRYPT_BLOWFISH, '', $this->mode, '');
|
||
|
|
$this->demcrypt = mcrypt_module_open(MCRYPT_BLOWFISH, '', $this->mode, '');
|
||
|
|
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
switch ($mode) {
|
||
|
|
case CRYPT_BLOWFISH_MODE_ECB:
|
||
|
|
case CRYPT_BLOWFISH_MODE_CBC:
|
||
|
|
$this->paddable = true;
|
||
|
|
$this->mode = $mode;
|
||
|
|
break;
|
||
|
|
case CRYPT_BLOWFISH_MODE_CTR:
|
||
|
|
case CRYPT_BLOWFISH_MODE_CFB:
|
||
|
|
case CRYPT_BLOWFISH_MODE_OFB:
|
||
|
|
$this->mode = $mode;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
$this->paddable = true;
|
||
|
|
$this->mode = CRYPT_BLOWFISH_MODE_CBC;
|
||
|
|
}
|
||
|
|
$this->inline_crypt_setup();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the key.
|
||
|
|
*
|
||
|
|
* Keys can be of any length. Blowfish, itself, requires the use of a key between 32 and max. 448-bits long.
|
||
|
|
* If the key is less than 32-bits we NOT fill the key to 32bit but let the key as it is to be compatible
|
||
|
|
* with mcrypt because mcrypt act this way with blowfish key's < 32 bits.
|
||
|
|
*
|
||
|
|
* If the key is more than 448-bits, we trim the excess bits.
|
||
|
|
*
|
||
|
|
* If the key is not explicitly set, or empty, it'll be assumed a 128 bits key to be all null bytes.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
* @param String $key
|
||
|
|
*/
|
||
|
|
function setKey($key)
|
||
|
|
{
|
||
|
|
$keylength = strlen($key);
|
||
|
|
|
||
|
|
if (!$keylength) {
|
||
|
|
$key = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
|
||
|
|
}
|
||
|
|
elseif ($keylength > 56) {
|
||
|
|
$key = substr($key, 0, 56);
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->key = $key;
|
||
|
|
|
||
|
|
$this->enchanged = true;
|
||
|
|
$this->dechanged = true;
|
||
|
|
|
||
|
|
if (CRYPT_BLOWFISH_MODE == CRYPT_BLOWFISH_MODE_MCRYPT) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* key-expanding p[] and S-Box building sb[] */
|
||
|
|
$this->bctx = array(
|
||
|
|
'p' => array(),
|
||
|
|
'sb' => array(
|
||
|
|
$this->sbox0,
|
||
|
|
$this->sbox1,
|
||
|
|
$this->sbox2,
|
||
|
|
$this->sbox3
|
||
|
|
)
|
||
|
|
);
|
||
|
|
|
||
|
|
// unpack binary string in unsigned chars
|
||
|
|
$key = array_values(unpack('C*', $key));
|
||
|
|
$keyl = count($key);
|
||
|
|
for ($j = 0, $i = 0; $i < 18; ++$i) {
|
||
|
|
// xor P1 with the first 32-bits of the key, xor P2 with the second 32-bits ...
|
||
|
|
for ($data = 0, $k = 0; $k < 4; ++$k) {
|
||
|
|
$data = ($data << 8) | $key[$j];
|
||
|
|
if (++$j >= $keyl) {
|
||
|
|
$j = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$this->bctx['p'][] = $this->parray[$i] ^ $data;
|
||
|
|
}
|
||
|
|
|
||
|
|
// encrypt the zero-string, replace P1 and P2 with the encrypted data,
|
||
|
|
// encrypt P3 and P4 with the new P1 and P2, do it with all P-array and subkeys
|
||
|
|
$datal = 0;
|
||
|
|
$datar = 0;
|
||
|
|
for ($i = 0; $i < 18; $i += 2) {
|
||
|
|
$this->_encryptBlock($datal, $datar);
|
||
|
|
$this->bctx['p'][$i ] = $datal;
|
||
|
|
$this->bctx['p'][$i + 1] = $datar;
|
||
|
|
}
|
||
|
|
for ($i = 0; $i < 4; ++$i) {
|
||
|
|
for ($j = 0; $j < 256; $j += 2) {
|
||
|
|
$this->_encryptBlock($datal, $datar);
|
||
|
|
$this->bctx['sb'][$i][$j ] = $datal;
|
||
|
|
$this->bctx['sb'][$i][$j + 1] = $datar;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Encrypt the block.
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
* @param int $Xl left uInt32 part of the block
|
||
|
|
* @param int $Xr right uInt32 part of the block
|
||
|
|
* @return void
|
||
|
|
*/
|
||
|
|
function _encryptBlock(&$Xl, &$Xr)
|
||
|
|
{
|
||
|
|
$p = $this->bctx['p'];
|
||
|
|
$sb_0 = $this->bctx['sb'][0];
|
||
|
|
$sb_1 = $this->bctx['sb'][1];
|
||
|
|
$sb_2 = $this->bctx['sb'][2];
|
||
|
|
$sb_3 = $this->bctx['sb'][3];
|
||
|
|
$l = $Xl;
|
||
|
|
$r = $Xr;
|
||
|
|
|
||
|
|
$i = -1;
|
||
|
|
while ($i < 15) {
|
||
|
|
$l^= $p[++$i];
|
||
|
|
$r^= ($sb_0[$l >> 24 & 0xff] +
|
||
|
|
$sb_1[$l >> 16 & 0xff] ^
|
||
|
|
$sb_2[$l >> 8 & 0xff]) +
|
||
|
|
$sb_3[$l & 0xff];
|
||
|
|
|
||
|
|
$r^= $p[++$i];
|
||
|
|
$l^= ($sb_0[$r >> 24 & 0xff] +
|
||
|
|
$sb_1[$r >> 16 & 0xff] ^
|
||
|
|
$sb_2[$r >> 8 & 0xff]) +
|
||
|
|
$sb_3[$r & 0xff];
|
||
|
|
|
||
|
|
}
|
||
|
|
$Xr = $l ^ $p[16];
|
||
|
|
$Xl = $r ^ $p[17];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the password.
|
||
|
|
*
|
||
|
|
* Depending on what $method is set to, setPassword()'s (optional) parameters are as follows:
|
||
|
|
* {@link http://en.wikipedia.org/wiki/PBKDF2 pbkdf2}:
|
||
|
|
* $hash, $salt, $count
|
||
|
|
*
|
||
|
|
* @param String $password
|
||
|
|
* @param optional String $method
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function setPassword($password, $method = 'pbkdf2')
|
||
|
|
{
|
||
|
|
$key = '';
|
||
|
|
|
||
|
|
switch ($method) {
|
||
|
|
default: // 'pbkdf2'
|
||
|
|
list(, , $hash, $salt, $count) = func_get_args();
|
||
|
|
if (!isset($hash)) {
|
||
|
|
$hash = 'sha1';
|
||
|
|
}
|
||
|
|
// WPA and WPA2 use the SSID as the salt
|
||
|
|
if (!isset($salt)) {
|
||
|
|
$salt = 'phpseclib/salt';
|
||
|
|
}
|
||
|
|
// RFC2898#section-4.2 uses 1,000 iterations by default
|
||
|
|
// WPA and WPA2 use 4,096.
|
||
|
|
if (!isset($count)) {
|
||
|
|
$count = 1000;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!class_exists('Crypt_Hash')) {
|
||
|
|
require_once('Crypt/Hash.php');
|
||
|
|
}
|
||
|
|
|
||
|
|
$i = 1;
|
||
|
|
while (strlen($key) < 56) {
|
||
|
|
//$dk.= $this->_pbkdf($password, $salt, $count, $i++);
|
||
|
|
$hmac = new Crypt_Hash();
|
||
|
|
$hmac->setHash($hash);
|
||
|
|
$hmac->setKey($password);
|
||
|
|
$f = $u = $hmac->hash($salt . pack('N', $i++));
|
||
|
|
for ($j = 2; $j <= $count; $j++) {
|
||
|
|
$u = $hmac->hash($u);
|
||
|
|
$f^= $u;
|
||
|
|
}
|
||
|
|
$key.= $f;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->setKey($key);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the initialization vector. (optional)
|
||
|
|
*
|
||
|
|
* SetIV is not required when CRYPT_BLOWFISH_MODE_ECB is being used. If not explictly set, it'll be assumed
|
||
|
|
* to be all null bytes.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
* @param String $iv
|
||
|
|
*/
|
||
|
|
function setIV($iv)
|
||
|
|
{
|
||
|
|
$this->encryptIV = $this->decryptIV = $this->iv = str_pad(substr($iv, 0, 8), 8, chr(0));
|
||
|
|
$this->enchanged = true;
|
||
|
|
$this->dechanged = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Encrypts a message.
|
||
|
|
*
|
||
|
|
* $plaintext will be padded with up to 8 additional bytes. Other Blowfish implementations may or may not pad in the
|
||
|
|
* same manner. Other common approaches to padding and the reasons why it's necessary are discussed in the following
|
||
|
|
* URL:
|
||
|
|
*
|
||
|
|
* {@link http://www.di-mgt.com.au/cryptopad.html http://www.di-mgt.com.au/cryptopad.html}
|
||
|
|
*
|
||
|
|
* An alternative to padding is to, separately, send the length of the file. This is what SSH, in fact, does.
|
||
|
|
* strlen($plaintext) will still need to be a multiple of 8, however, arbitrary values can be added to make it that
|
||
|
|
* length.
|
||
|
|
*
|
||
|
|
* @see Crypt_Blowfish::decrypt()
|
||
|
|
* @access public
|
||
|
|
* @param String $plaintext
|
||
|
|
*/
|
||
|
|
function encrypt($plaintext)
|
||
|
|
{
|
||
|
|
if ( CRYPT_BLOWFISH_MODE == CRYPT_BLOWFISH_MODE_MCRYPT ) {
|
||
|
|
if ($this->paddable) {
|
||
|
|
$plaintext = $this->_pad($plaintext);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($this->enchanged) {
|
||
|
|
mcrypt_generic_init($this->enmcrypt, $this->key, $this->encryptIV);
|
||
|
|
if ($this->mode == 'ncfb') {
|
||
|
|
mcrypt_generic_init($this->ecb, $this->key, "\0\0\0\0\0\0\0\0");
|
||
|
|
}
|
||
|
|
$this->enchanged = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($this->mode != 'ncfb' || !$this->continuousBuffer) {
|
||
|
|
$ciphertext = mcrypt_generic($this->enmcrypt, $plaintext);
|
||
|
|
} else {
|
||
|
|
$iv = &$this->encryptIV;
|
||
|
|
$pos = &$this->enbuffer['pos'];
|
||
|
|
$len = strlen($plaintext);
|
||
|
|
$ciphertext = '';
|
||
|
|
$i = 0;
|
||
|
|
if ($pos) {
|
||
|
|
$orig_pos = $pos;
|
||
|
|
$max = 8 - $pos;
|
||
|
|
if ($len >= $max) {
|
||
|
|
$i = $max;
|
||
|
|
$len-= $max;
|
||
|
|
$pos = 0;
|
||
|
|
} else {
|
||
|
|
$i = $len;
|
||
|
|
$pos+= $len;
|
||
|
|
$len = 0;
|
||
|
|
}
|
||
|
|
$ciphertext = substr($iv, $orig_pos) ^ $plaintext;
|
||
|
|
$iv = substr_replace($iv, $ciphertext, $orig_pos, $i);
|
||
|
|
$this->enbuffer['enmcrypt_init'] = true;
|
||
|
|
}
|
||
|
|
if ($len >= 8) {
|
||
|
|
if ($this->enbuffer['enmcrypt_init'] === false || $len > 600) {
|
||
|
|
if ($this->enbuffer['enmcrypt_init'] === true) {
|
||
|
|
mcrypt_generic_init($this->enmcrypt, $this->key, $iv);
|
||
|
|
$this->enbuffer['enmcrypt_init'] = false;
|
||
|
|
}
|
||
|
|
$ciphertext.= mcrypt_generic($this->enmcrypt, substr($plaintext, $i, $len - $len % 8));
|
||
|
|
$iv = substr($ciphertext, -8);
|
||
|
|
$len%= 8;
|
||
|
|
} else {
|
||
|
|
while ($len >= 8) {
|
||
|
|
$iv = mcrypt_generic($this->ecb, $iv) ^ substr($plaintext, $i, 8);
|
||
|
|
$ciphertext.= $iv;
|
||
|
|
$len-= 8;
|
||
|
|
$i+= 8;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($len) {
|
||
|
|
$iv = mcrypt_generic($this->ecb, $iv);
|
||
|
|
$block = $iv ^ substr($plaintext, -$len);
|
||
|
|
$iv = substr_replace($iv, $block, 0, $len);
|
||
|
|
$ciphertext.= $block;
|
||
|
|
$pos = $len;
|
||
|
|
}
|
||
|
|
return $ciphertext;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!$this->continuousBuffer) {
|
||
|
|
mcrypt_generic_init($this->enmcrypt, $this->key, $this->encryptIV);
|
||
|
|
}
|
||
|
|
|
||
|
|
return $ciphertext;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (empty($this->bctx)) {
|
||
|
|
$this->setKey($this->key);
|
||
|
|
}
|
||
|
|
|
||
|
|
$inline = $this->inline_crypt;
|
||
|
|
return $inline('encrypt', $this, $plaintext);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Decrypts a message.
|
||
|
|
*
|
||
|
|
* If strlen($ciphertext) is not a multiple of 8, null bytes will be added to the end of the string until it is.
|
||
|
|
*
|
||
|
|
* @see Crypt_Blowfish::encrypt()
|
||
|
|
* @access public
|
||
|
|
* @param String $ciphertext
|
||
|
|
*/
|
||
|
|
function decrypt($ciphertext)
|
||
|
|
{
|
||
|
|
if ( CRYPT_BLOWFISH_MODE == CRYPT_BLOWFISH_MODE_MCRYPT ) {
|
||
|
|
if ($this->paddable) {
|
||
|
|
// we pad with chr(0) since that's what mcrypt_generic does. to quote from http://php.net/function.mcrypt-generic :
|
||
|
|
// "The data is padded with "\0" to make sure the length of the data is n * blocksize."
|
||
|
|
$ciphertext = str_pad($ciphertext, strlen($ciphertext) + (8 - strlen($ciphertext) % 8) % 8, chr(0));
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($this->dechanged) {
|
||
|
|
mcrypt_generic_init($this->demcrypt, $this->key, $this->decryptIV);
|
||
|
|
if ($this->mode == 'ncfb') {
|
||
|
|
mcrypt_generic_init($this->ecb, $this->key, "\0\0\0\0\0\0\0\0");
|
||
|
|
}
|
||
|
|
$this->dechanged = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($this->mode != 'ncfb' || !$this->continuousBuffer) {
|
||
|
|
$plaintext = mdecrypt_generic($this->demcrypt, $ciphertext);
|
||
|
|
} else {
|
||
|
|
$iv = &$this->decryptIV;
|
||
|
|
$pos = &$this->debuffer['pos'];
|
||
|
|
$len = strlen($ciphertext);
|
||
|
|
$plaintext = '';
|
||
|
|
$i = 0;
|
||
|
|
if ($pos) {
|
||
|
|
$orig_pos = $pos;
|
||
|
|
$max = 8 - $pos;
|
||
|
|
if ($len >= $max) {
|
||
|
|
$i = $max;
|
||
|
|
$len-= $max;
|
||
|
|
$pos = 0;
|
||
|
|
} else {
|
||
|
|
$i = $len;
|
||
|
|
$pos+= $len;
|
||
|
|
$len = 0;
|
||
|
|
}
|
||
|
|
$plaintext = substr($iv, $orig_pos) ^ $ciphertext;
|
||
|
|
$iv = substr_replace($iv, substr($ciphertext, 0, $i), $orig_pos, $i);
|
||
|
|
}
|
||
|
|
if ($len >= 8) {
|
||
|
|
$cb = substr($ciphertext, $i, $len - $len % 8);
|
||
|
|
$plaintext.= mcrypt_generic($this->ecb, $iv . $cb) ^ $cb;
|
||
|
|
$iv = substr($cb, -8);
|
||
|
|
$len%= 8;
|
||
|
|
}
|
||
|
|
if ($len) {
|
||
|
|
$iv = mcrypt_generic($this->ecb, $iv);
|
||
|
|
$plaintext.= $iv ^ substr($ciphertext, -$len);
|
||
|
|
$iv = substr_replace($iv, substr($ciphertext, -$len), 0, $len);
|
||
|
|
$pos = $len;
|
||
|
|
}
|
||
|
|
return $plaintext;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!$this->continuousBuffer) {
|
||
|
|
mcrypt_generic_init($this->demcrypt, $this->key, $this->decryptIV);
|
||
|
|
}
|
||
|
|
|
||
|
|
return $this->paddable ? $this->_unpad($plaintext) : $plaintext;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (empty($this->bctx)) {
|
||
|
|
$this->setKey($this->key);
|
||
|
|
}
|
||
|
|
|
||
|
|
$inline = $this->inline_crypt;
|
||
|
|
return $inline('decrypt', $this, $ciphertext);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Treat consecutive "packets" as if they are a continuous buffer.
|
||
|
|
*
|
||
|
|
* @see Crypt_Blowfish::disableContinuousBuffer()
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function enableContinuousBuffer()
|
||
|
|
{
|
||
|
|
$this->continuousBuffer = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Treat consecutive packets as if they are a discontinuous buffer.
|
||
|
|
*
|
||
|
|
* The default behavior.
|
||
|
|
*
|
||
|
|
* @see Crypt_Blowfish::enableContinuousBuffer()
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function disableContinuousBuffer()
|
||
|
|
{
|
||
|
|
$this->continuousBuffer = false;
|
||
|
|
$this->encryptIV = $this->iv;
|
||
|
|
$this->decryptIV = $this->iv;
|
||
|
|
$this->enbuffer = array('encrypted' => '', 'xor' => '', 'pos' => 0, 'enmcrypt_init' => true);
|
||
|
|
$this->debuffer = array('ciphertext' => '', 'xor' => '', 'pos' => 0, 'demcrypt_init' => true);
|
||
|
|
|
||
|
|
if (CRYPT_BLOWFISH_MODE == CRYPT_BLOWFISH_MODE_MCRYPT) {
|
||
|
|
mcrypt_generic_init($this->enmcrypt, $this->key, $this->iv);
|
||
|
|
mcrypt_generic_init($this->demcrypt, $this->key, $this->iv);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Pad "packets".
|
||
|
|
*
|
||
|
|
* Blowfish works by encrypting 8 bytes at a time. If you ever need to encrypt or decrypt something that's not
|
||
|
|
* a multiple of 8, it becomes necessary to pad the input so that it's length is a multiple of eight.
|
||
|
|
*
|
||
|
|
* Padding is enabled by default. Sometimes, however, it is undesirable to pad strings. Such is the case in SSH1,
|
||
|
|
* where "packets" are padded with random bytes before being encrypted. Unpad these packets and you risk stripping
|
||
|
|
* away characters that shouldn't be stripped away. (SSH knows how many bytes are added because the length is
|
||
|
|
* transmitted separately)
|
||
|
|
*
|
||
|
|
* @see Crypt_Blowfish::disablePadding()
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function enablePadding()
|
||
|
|
{
|
||
|
|
$this->padding = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Do not pad packets.
|
||
|
|
*
|
||
|
|
* @see Crypt_Blowfish::enablePadding()
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function disablePadding()
|
||
|
|
{
|
||
|
|
$this->padding = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Pads a string
|
||
|
|
*
|
||
|
|
* Pads a string using the RSA PKCS padding standards so that its length is a multiple of the blocksize (8).
|
||
|
|
*
|
||
|
|
* If padding is disabled and $text is not a multiple of the blocksize, the string will be padded regardless
|
||
|
|
* and padding will, hence forth, be enabled.
|
||
|
|
*
|
||
|
|
* @see Crypt_Blowfish::_unpad()
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function _pad($text)
|
||
|
|
{
|
||
|
|
$length = strlen($text);
|
||
|
|
|
||
|
|
if (!$this->padding) {
|
||
|
|
if ($length % 8 == 0) {
|
||
|
|
return $text;
|
||
|
|
} else {
|
||
|
|
user_error("The plaintext's length ($length) is not a multiple of the block size (8)");
|
||
|
|
$this->padding = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$pad = 8 - ($length % 8);
|
||
|
|
|
||
|
|
return str_pad($text, $length + $pad, chr($pad));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Unpads a string
|
||
|
|
*
|
||
|
|
* If padding is enabled and the reported padding length is invalid the encryption key will be assumed to be wrong
|
||
|
|
* and false will be returned.
|
||
|
|
*
|
||
|
|
* @see Crypt_Blowfish::_pad()
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function _unpad($text)
|
||
|
|
{
|
||
|
|
if (!$this->padding) {
|
||
|
|
return $text;
|
||
|
|
}
|
||
|
|
|
||
|
|
$length = ord($text[strlen($text) - 1]);
|
||
|
|
|
||
|
|
if (!$length || $length > 8) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
return substr($text, 0, -$length);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* String Shift
|
||
|
|
*
|
||
|
|
* Inspired by array_shift
|
||
|
|
*
|
||
|
|
* @param String $string
|
||
|
|
* @return String
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function _string_shift(&$string)
|
||
|
|
{
|
||
|
|
$substr = substr($string, 0, 8);
|
||
|
|
$string = substr($string, 8);
|
||
|
|
return $substr;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Generate CTR XOR encryption key
|
||
|
|
*
|
||
|
|
* Encrypt the output of this and XOR it against the ciphertext / plaintext to get the
|
||
|
|
* plaintext / ciphertext in CTR mode.
|
||
|
|
*
|
||
|
|
* @see Crypt_Blowfish::decrypt()
|
||
|
|
* @see Crypt_Blowfish::encrypt()
|
||
|
|
* @access public
|
||
|
|
* @param String $iv
|
||
|
|
*/
|
||
|
|
function _generate_xor(&$iv)
|
||
|
|
{
|
||
|
|
$xor = $iv;
|
||
|
|
for ($j = 4; $j <= 8; $j+=4) {
|
||
|
|
$temp = substr($iv, -$j, 4);
|
||
|
|
switch ($temp) {
|
||
|
|
case "\xFF\xFF\xFF\xFF":
|
||
|
|
$iv = substr_replace($iv, "\x00\x00\x00\x00", -$j, 4);
|
||
|
|
break;
|
||
|
|
case "\x7F\xFF\xFF\xFF":
|
||
|
|
$iv = substr_replace($iv, "\x80\x00\x00\x00", -$j, 4);
|
||
|
|
break 2;
|
||
|
|
default:
|
||
|
|
extract(unpack('Ncount', $temp));
|
||
|
|
$iv = substr_replace($iv, pack('N', $count + 1), -$j, 4);
|
||
|
|
break 2;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $xor;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates performance-optimized function for de/encrypt(), storing it in $this->inline_crypt
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function inline_crypt_setup()
|
||
|
|
{/*{{{*/
|
||
|
|
$lambda_functions =& Crypt_Blowfish::get_lambda_functions();
|
||
|
|
$block_size = 8;
|
||
|
|
$mode = $this->mode;
|
||
|
|
$code_hash = "$mode";
|
||
|
|
|
||
|
|
if (!isset($lambda_functions[$code_hash])) {
|
||
|
|
$init_cryptBlock = '
|
||
|
|
extract($self->bctx["p"], EXTR_PREFIX_ALL, "p");
|
||
|
|
extract($self->bctx["sb"], EXTR_PREFIX_ALL, "sb");
|
||
|
|
';
|
||
|
|
|
||
|
|
// Generating encrypt code:
|
||
|
|
$_encryptBlock = '
|
||
|
|
$in = unpack("N*", $in);
|
||
|
|
$l = $in[1];
|
||
|
|
$r = $in[2];
|
||
|
|
';
|
||
|
|
for ($i = 0; $i < 16; $i+= 2) {
|
||
|
|
$_encryptBlock.= '
|
||
|
|
$l^= $p_'.($i).';
|
||
|
|
$r^= ($sb_0[$l >> 24 & 0xff] +
|
||
|
|
$sb_1[$l >> 16 & 0xff] ^
|
||
|
|
$sb_2[$l >> 8 & 0xff]) +
|
||
|
|
$sb_3[$l & 0xff];
|
||
|
|
|
||
|
|
$r^= $p_'.($i + 1).';
|
||
|
|
$l^= ($sb_0[$r >> 24 & 0xff] +
|
||
|
|
$sb_1[$r >> 16 & 0xff] ^
|
||
|
|
$sb_2[$r >> 8 & 0xff]) +
|
||
|
|
$sb_3[$r & 0xff];
|
||
|
|
';
|
||
|
|
}
|
||
|
|
$_encryptBlock.= '
|
||
|
|
$in = pack("N*", $r ^ $p_17, $l ^ $p_16);
|
||
|
|
';
|
||
|
|
|
||
|
|
// Generating decrypt code:
|
||
|
|
$_decryptBlock = '
|
||
|
|
$in = unpack("N*", $in);
|
||
|
|
$l = $in[1];
|
||
|
|
$r = $in[2];
|
||
|
|
';
|
||
|
|
|
||
|
|
for ($i = 17; $i > 2; $i-= 2) {
|
||
|
|
$_decryptBlock.= '
|
||
|
|
$l^= $p_'.($i).';
|
||
|
|
$r^= ($sb_0[$l >> 24 & 0xff] +
|
||
|
|
$sb_1[$l >> 16 & 0xff] ^
|
||
|
|
$sb_2[$l >> 8 & 0xff]) +
|
||
|
|
$sb_3[$l & 0xff];
|
||
|
|
|
||
|
|
$r^= $p_'.($i - 1).';
|
||
|
|
$l^= ($sb_0[$r >> 24 & 0xff] +
|
||
|
|
$sb_1[$r >> 16 & 0xff] ^
|
||
|
|
$sb_2[$r >> 8 & 0xff]) +
|
||
|
|
$sb_3[$r & 0xff];
|
||
|
|
';
|
||
|
|
}
|
||
|
|
|
||
|
|
$_decryptBlock.= '
|
||
|
|
$in = pack("N*", $r ^ $p_0, $l ^ $p_1);
|
||
|
|
';
|
||
|
|
|
||
|
|
// Generating mode of operation code:
|
||
|
|
switch ($mode) {
|
||
|
|
case CRYPT_BLOWFISH_MODE_ECB:
|
||
|
|
$encrypt = '
|
||
|
|
$ciphertext = "";
|
||
|
|
$text = $self->_pad($text);
|
||
|
|
$plaintext_len = strlen($text);
|
||
|
|
|
||
|
|
for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') {
|
||
|
|
$in = substr($text, $i, '.$block_size.');
|
||
|
|
'.$_encryptBlock.'
|
||
|
|
$ciphertext.= $in;
|
||
|
|
}
|
||
|
|
return $ciphertext;
|
||
|
|
';
|
||
|
|
|
||
|
|
$decrypt = '
|
||
|
|
$plaintext = "";
|
||
|
|
$text = str_pad($text, strlen($text) + ('.$block_size.' - strlen($text) % '.$block_size.') % '.$block_size.', chr(0));
|
||
|
|
$ciphertext_len = strlen($text);
|
||
|
|
|
||
|
|
for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') {
|
||
|
|
$in = substr($text, $i, '.$block_size.');
|
||
|
|
'.$_decryptBlock.'
|
||
|
|
$plaintext.= $in;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $self->_unpad($plaintext);
|
||
|
|
';
|
||
|
|
break;
|
||
|
|
case CRYPT_BLOWFISH_MODE_CBC:
|
||
|
|
$encrypt = '
|
||
|
|
$ciphertext = "";
|
||
|
|
$text = $self->_pad($text);
|
||
|
|
$plaintext_len = strlen($text);
|
||
|
|
|
||
|
|
$in = $self->encryptIV;
|
||
|
|
|
||
|
|
for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') {
|
||
|
|
$in = substr($text, $i, '.$block_size.') ^ $in;
|
||
|
|
'.$_encryptBlock.'
|
||
|
|
$ciphertext.= $in;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($self->continuousBuffer) {
|
||
|
|
$self->encryptIV = $in;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $ciphertext;
|
||
|
|
';
|
||
|
|
|
||
|
|
$decrypt = '
|
||
|
|
$plaintext = "";
|
||
|
|
$text = str_pad($text, strlen($text) + ('.$block_size.' - strlen($text) % '.$block_size.') % '.$block_size.', chr(0));
|
||
|
|
$ciphertext_len = strlen($text);
|
||
|
|
|
||
|
|
$iv = $self->decryptIV;
|
||
|
|
|
||
|
|
for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') {
|
||
|
|
$in = $block = substr($text, $i, '.$block_size.');
|
||
|
|
'.$_decryptBlock.'
|
||
|
|
$plaintext.= $in ^ $iv;
|
||
|
|
$iv = $block;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($self->continuousBuffer) {
|
||
|
|
$self->decryptIV = $iv;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $self->_unpad($plaintext);
|
||
|
|
';
|
||
|
|
break;
|
||
|
|
case CRYPT_BLOWFISH_MODE_CTR:
|
||
|
|
$encrypt = '
|
||
|
|
$ciphertext = "";
|
||
|
|
$plaintext_len = strlen($text);
|
||
|
|
$xor = $self->encryptIV;
|
||
|
|
$buffer = &$self->enbuffer;
|
||
|
|
|
||
|
|
if (strlen($buffer["encrypted"])) {
|
||
|
|
for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') {
|
||
|
|
$block = substr($text, $i, '.$block_size.');
|
||
|
|
if (strlen($block) > strlen($buffer["encrypted"])) {
|
||
|
|
$in = $self->_generate_xor($xor);
|
||
|
|
'.$_encryptBlock.'
|
||
|
|
$buffer["encrypted"].= $in;
|
||
|
|
}
|
||
|
|
$key = $self->_string_shift($buffer["encrypted"]);
|
||
|
|
$ciphertext.= $block ^ $key;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') {
|
||
|
|
$block = substr($text, $i, '.$block_size.');
|
||
|
|
$in = $self->_generate_xor($xor);
|
||
|
|
'.$_encryptBlock.'
|
||
|
|
$key = $in;
|
||
|
|
$ciphertext.= $block ^ $key;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($self->continuousBuffer) {
|
||
|
|
$self->encryptIV = $xor;
|
||
|
|
if ($start = $plaintext_len % '.$block_size.') {
|
||
|
|
$buffer["encrypted"] = substr($key, $start) . $buffer["encrypted"];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $ciphertext;
|
||
|
|
';
|
||
|
|
|
||
|
|
$decrypt = '
|
||
|
|
$plaintext = "";
|
||
|
|
$ciphertext_len = strlen($text);
|
||
|
|
$xor = $self->decryptIV;
|
||
|
|
$buffer = &$self->debuffer;
|
||
|
|
|
||
|
|
if (strlen($buffer["ciphertext"])) {
|
||
|
|
for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') {
|
||
|
|
$block = substr($text, $i, '.$block_size.');
|
||
|
|
if (strlen($block) > strlen($buffer["ciphertext"])) {
|
||
|
|
$in = $self->_generate_xor($xor);
|
||
|
|
'.$_encryptBlock.'
|
||
|
|
$buffer["ciphertext"].= $in;
|
||
|
|
}
|
||
|
|
$key = $self->_string_shift($buffer["ciphertext"]);
|
||
|
|
$plaintext.= $block ^ $key;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') {
|
||
|
|
$block = substr($text, $i, '.$block_size.');
|
||
|
|
$in = $self->_generate_xor($xor);
|
||
|
|
'.$_encryptBlock.'
|
||
|
|
$key = $in;
|
||
|
|
$plaintext.= $block ^ $key;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($self->continuousBuffer) {
|
||
|
|
$self->decryptIV = $xor;
|
||
|
|
if ($start = $ciphertext_len % '.$block_size.') {
|
||
|
|
$buffer["ciphertext"] = substr($key, $start) . $buffer["ciphertext"];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $plaintext;
|
||
|
|
';
|
||
|
|
break;
|
||
|
|
case CRYPT_BLOWFISH_MODE_CFB:
|
||
|
|
$encrypt = '
|
||
|
|
$ciphertext = "";
|
||
|
|
$buffer = &$self->enbuffer;
|
||
|
|
|
||
|
|
if ($self->continuousBuffer) {
|
||
|
|
$iv = &$self->encryptIV;
|
||
|
|
$pos = &$buffer["pos"];
|
||
|
|
} else {
|
||
|
|
$iv = $self->encryptIV;
|
||
|
|
$pos = 0;
|
||
|
|
}
|
||
|
|
$len = strlen($text);
|
||
|
|
$i = 0;
|
||
|
|
if ($pos) {
|
||
|
|
$orig_pos = $pos;
|
||
|
|
$max = '.$block_size.' - $pos;
|
||
|
|
if ($len >= $max) {
|
||
|
|
$i = $max;
|
||
|
|
$len-= $max;
|
||
|
|
$pos = 0;
|
||
|
|
} else {
|
||
|
|
$i = $len;
|
||
|
|
$pos+= $len;
|
||
|
|
$len = 0;
|
||
|
|
}
|
||
|
|
$ciphertext = substr($iv, $orig_pos) ^ $text;
|
||
|
|
$iv = substr_replace($iv, $ciphertext, $orig_pos, $i);
|
||
|
|
}
|
||
|
|
while ($len >= '.$block_size.') {
|
||
|
|
$in = $iv;
|
||
|
|
'.$_encryptBlock.';
|
||
|
|
$iv = $in ^ substr($text, $i, '.$block_size.');
|
||
|
|
$ciphertext.= $iv;
|
||
|
|
$len-= '.$block_size.';
|
||
|
|
$i+= '.$block_size.';
|
||
|
|
}
|
||
|
|
if ($len) {
|
||
|
|
$in = $iv;
|
||
|
|
'.$_encryptBlock.'
|
||
|
|
$iv = $in;
|
||
|
|
$block = $iv ^ substr($text, $i);
|
||
|
|
$iv = substr_replace($iv, $block, 0, $len);
|
||
|
|
$ciphertext.= $block;
|
||
|
|
$pos = $len;
|
||
|
|
}
|
||
|
|
return $ciphertext;
|
||
|
|
';
|
||
|
|
|
||
|
|
$decrypt = '
|
||
|
|
$plaintext = "";
|
||
|
|
$buffer = &$self->debuffer;
|
||
|
|
|
||
|
|
if ($self->continuousBuffer) {
|
||
|
|
$iv = &$self->decryptIV;
|
||
|
|
$pos = &$buffer["pos"];
|
||
|
|
} else {
|
||
|
|
$iv = $self->decryptIV;
|
||
|
|
$pos = 0;
|
||
|
|
}
|
||
|
|
$len = strlen($text);
|
||
|
|
$i = 0;
|
||
|
|
if ($pos) {
|
||
|
|
$orig_pos = $pos;
|
||
|
|
$max = '.$block_size.' - $pos;
|
||
|
|
if ($len >= $max) {
|
||
|
|
$i = $max;
|
||
|
|
$len-= $max;
|
||
|
|
$pos = 0;
|
||
|
|
} else {
|
||
|
|
$i = $len;
|
||
|
|
$pos+= $len;
|
||
|
|
$len = 0;
|
||
|
|
}
|
||
|
|
$plaintext = substr($iv, $orig_pos) ^ $text;
|
||
|
|
$iv = substr_replace($iv, substr($text, 0, $i), $orig_pos, $i);
|
||
|
|
}
|
||
|
|
while ($len >= '.$block_size.') {
|
||
|
|
$in = $iv;
|
||
|
|
'.$_encryptBlock.'
|
||
|
|
$iv = $in;
|
||
|
|
$cb = substr($text, $i, '.$block_size.');
|
||
|
|
$plaintext.= $iv ^ $cb;
|
||
|
|
$iv = $cb;
|
||
|
|
$len-= '.$block_size.';
|
||
|
|
$i+= '.$block_size.';
|
||
|
|
}
|
||
|
|
if ($len) {
|
||
|
|
$in = $iv;
|
||
|
|
'.$_encryptBlock.'
|
||
|
|
$iv = $in;
|
||
|
|
$plaintext.= $iv ^ substr($text, $i);
|
||
|
|
$iv = substr_replace($iv, substr($text, $i), 0, $len);
|
||
|
|
$pos = $len;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $plaintext;
|
||
|
|
';
|
||
|
|
break;
|
||
|
|
case CRYPT_BLOWFISH_MODE_OFB:
|
||
|
|
$encrypt = '
|
||
|
|
$ciphertext = "";
|
||
|
|
$plaintext_len = strlen($text);
|
||
|
|
$xor = $self->encryptIV;
|
||
|
|
$buffer = &$self->enbuffer;
|
||
|
|
|
||
|
|
if (strlen($buffer["xor"])) {
|
||
|
|
for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') {
|
||
|
|
$block = substr($text, $i, '.$block_size.');
|
||
|
|
if (strlen($block) > strlen($buffer["xor"])) {
|
||
|
|
$in = $xor;
|
||
|
|
'.$_encryptBlock.'
|
||
|
|
$xor = $in;
|
||
|
|
$buffer["xor"].= $xor;
|
||
|
|
}
|
||
|
|
$key = $self->_string_shift($buffer["xor"]);
|
||
|
|
$ciphertext.= $block ^ $key;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') {
|
||
|
|
$in = $xor;
|
||
|
|
'.$_encryptBlock.'
|
||
|
|
$xor = $in;
|
||
|
|
$ciphertext.= substr($text, $i, '.$block_size.') ^ $xor;
|
||
|
|
}
|
||
|
|
$key = $xor;
|
||
|
|
}
|
||
|
|
if ($self->continuousBuffer) {
|
||
|
|
$self->encryptIV = $xor;
|
||
|
|
if ($start = $plaintext_len % '.$block_size.') {
|
||
|
|
$buffer["xor"] = substr($key, $start) . $buffer["xor"];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $ciphertext;
|
||
|
|
';
|
||
|
|
|
||
|
|
$decrypt = '
|
||
|
|
$plaintext = "";
|
||
|
|
$ciphertext_len = strlen($text);
|
||
|
|
$xor = $self->decryptIV;
|
||
|
|
$buffer = &$self->debuffer;
|
||
|
|
|
||
|
|
if (strlen($buffer["xor"])) {
|
||
|
|
for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') {
|
||
|
|
$block = substr($text, $i, '.$block_size.');
|
||
|
|
if (strlen($block) > strlen($buffer["xor"])) {
|
||
|
|
$in = $xor;
|
||
|
|
'.$_encryptBlock.'
|
||
|
|
$xor = $in;
|
||
|
|
$buffer["xor"].= $xor;
|
||
|
|
}
|
||
|
|
$key = $self->_string_shift($buffer["xor"]);
|
||
|
|
$plaintext.= $block ^ $key;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') {
|
||
|
|
$in = $xor;
|
||
|
|
'.$_encryptBlock.'
|
||
|
|
$xor = $in;
|
||
|
|
$plaintext.= substr($text, $i, '.$block_size.') ^ $xor;
|
||
|
|
}
|
||
|
|
$key = $xor;
|
||
|
|
}
|
||
|
|
if ($self->continuousBuffer) {
|
||
|
|
$self->decryptIV = $xor;
|
||
|
|
if ($start = $ciphertext_len % '.$block_size.') {
|
||
|
|
$buffer["xor"] = substr($key, $start) . $buffer["xor"];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $plaintext;
|
||
|
|
';
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
$fnc_head = '$action, &$self, $text';
|
||
|
|
$fnc_body = $init_cryptBlock . 'if ($action == "encrypt") { ' . $encrypt . ' } else { ' . $decrypt . ' }';
|
||
|
|
|
||
|
|
if (function_exists('create_function') && is_callable('create_function')) {
|
||
|
|
$lambda_functions[$code_hash] = create_function($fnc_head, $fnc_body);
|
||
|
|
} else {
|
||
|
|
eval('function ' . ($lambda_functions[$code_hash] = 'f' . md5(microtime())) . '(' . $fnc_head . ') { ' . $fnc_body . ' }');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$this->inline_crypt = $lambda_functions[$code_hash];
|
||
|
|
}/*}}}*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Holds the lambda_functions table (classwide)
|
||
|
|
*
|
||
|
|
* @see inline_crypt_setup()
|
||
|
|
* @return Array
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function &get_lambda_functions()
|
||
|
|
{
|
||
|
|
static $functions = array();
|
||
|
|
return $functions;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// vim: ts=4:sw=4:et:
|
||
|
|
// vim6: fdl=1:
|