src/Biz/Util/Phpsec/Crypt/Twofish.php

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<?php

/**
 * Pure-PHP implementation of Twofish.
 *
 * Uses mcrypt, if available, and an internal implementation, otherwise.
 *
 * PHP version 5
 *
 * Useful resources are as follows:
 *
 *  - {@link http://en.wikipedia.org/wiki/Twofish Wikipedia description of Twofish}
 *
 * Here's a short example of how to use this library:
 * <code>
 * <?php
 *    include 'vendor/autoload.php';
 *
 *    $twofish = new \Biz\Util\Phpsec\Crypt\Twofish();
 *
 *    $twofish->setKey('12345678901234567890123456789012');
 *
 *    $plaintext = str_repeat('a', 1024);
 *
 *    echo $twofish->decrypt($twofish->encrypt($plaintext));
 * ?>
 * </code>
 *
 * @category  Crypt
 *
 * @author    Jim Wigginton <terrafrost@php.net>
 * @author    Hans-Juergen Petrich <petrich@tronic-media.com>
 * @copyright 2007 Jim Wigginton
 * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
 *
 * @see      http://phpseclib.sourceforge.net
 */

namespace Biz\Util\Phpsec\Crypt;

/**
 * Pure-PHP implementation of Twofish.
 *
 *
 * @author  Jim Wigginton <terrafrost@php.net>
 * @author  Hans-Juergen Petrich <petrich@tronic-media.com>
 */
class Twofish extends Base
{
    /**
     * The mcrypt specific name of the cipher.
     *
     * @var string
     *
     * @see \Biz\Util\Phpsec\Crypt\Base::cipher_name_mcrypt
     */
    public $cipher_name_mcrypt = 'twofish';

    /**
     * Optimizing value while CFB-encrypting.