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<?php/*** Pure-PHP implementation of DES.** Uses mcrypt, if available, and an internal implementation, otherwise.** PHP version 5** Useful resources are as follows:** - {@link http://en.wikipedia.org/wiki/DES_supplementary_material Wikipedia: DES supplementary material}* - {@link http://www.itl.nist.gov/fipspubs/fip46-2.htm FIPS 46-2 - (DES), Data Encryption Standard}* - {@link http://www.cs.eku.edu/faculty/styer/460/Encrypt/JS-DES.html JavaScript DES Example}** Here's a short example of how to use this library:* <code>* <?php* include 'vendor/autoload.php';** $des = new \phpseclib\Crypt\DES();** $des->setKey('abcdefgh');** $size = 10 * 1024;* $plaintext = '';* for ($i = 0; $i < $size; $i++) {* $plaintext.= 'a';* }** echo $des->decrypt($des->encrypt($plaintext));* ?>* </code>** @category Crypt* @package DES* @author Jim Wigginton <terrafrost@php.net>* @copyright 2007 Jim Wigginton* @license http://www.opensource.org/licenses/mit-license.html MIT License* @link http://phpseclib.sourceforge.net*/namespace phpseclib\Crypt;/*** Pure-PHP implementation of DES.** @package DES* @author Jim Wigginton <terrafrost@php.net>* @access public*/class DES extends Base{/**#@+* @access private* @see \phpseclib\Crypt\DES::_setupKey()* @see \phpseclib\Crypt\DES::_processBlock()*//*** Contains $keys[self::ENCRYPT]*/const ENCRYPT = 0;/*** Contains $keys[self::DECRYPT]*/const DECRYPT = 1;/**#@-*//*** Block Length of the cipher** @see \phpseclib\Crypt\Base::block_size* @var int* @access private*/var $block_size = 8;/*** Key Length (in bytes)** @see \phpseclib\Crypt\Base::setKeyLength()* @var int* @access private*/var $key_length = 8;/*** The mcrypt specific name of the cipher** @see \phpseclib\Crypt\Base::cipher_name_mcrypt* @var string* @access private*/var $cipher_name_mcrypt = 'des';/*** The OpenSSL names of the cipher / modes** @see \phpseclib\Crypt\Base::openssl_mode_names* @var array* @access private*/var $openssl_mode_names = array(self::MODE_ECB => 'des-ecb',self::MODE_CBC => 'des-cbc',self::MODE_CFB => 'des-cfb',self::MODE_OFB => 'des-ofb'// self::MODE_CTR is undefined for DES);/*** Optimizing value while CFB-encrypting** @see \phpseclib\Crypt\Base::cfb_init_len* @var int* @access private*/var $cfb_init_len = 500;/*** Switch for DES/3DES encryption** Used only if $engine == self::ENGINE_INTERNAL** @see self::_setupKey()* @see self::_processBlock()* @var int* @access private*/var $des_rounds = 1;/*** max possible size of $key** @see self::setKey()* @var string* @access private*/var $key_length_max = 8;/*** The Key Schedule** @see self::_setupKey()* @var array* @access private*/var $keys;/*** Shuffle table.** For each byte value index, the entry holds an 8-byte string* with each byte containing all bits in the same state as the* corresponding bit in the index value.** @see self::_processBlock()* @see self::_setupKey()* @var array* @access private*/var $shuffle = array("\x00\x00\x00\x00\x00\x00\x00\x00", "\x00\x00\x00\x00\x00\x00\x00\xFF","\x00\x00\x00\x00\x00\x00\xFF\x00", "\x00\x00\x00\x00\x00\x00\xFF\xFF","\x00\x00\x00\x00\x00\xFF\x00\x00", "\x00\x00\x00\x00\x00\xFF\x00\xFF","\x00\x00\x00\x00\x00\xFF\xFF\x00", "\x00\x00\x00\x00\x00\xFF\xFF\xFF","\x00\x00\x00\x00\xFF\x00\x00\x00", "\x00\x00\x00\x00\xFF\x00\x00\xFF","\x00\x00\x00\x00\xFF\x00\xFF\x00", "\x00\x00\x00\x00\xFF\x00\xFF\xFF","\x00\x00\x00\x00\xFF\xFF\x00\x00", "\x00\x00\x00\x00\xFF\xFF\x00\xFF","\x00\x00\x00\x00\xFF\xFF\xFF\x00", "\x00\x00\x00\x00\xFF\xFF\xFF\xFF","\x00\x00\x00\xFF\x00\x00\x00\x00", "\x00\x00\x00\xFF\x00\x00\x00\xFF","\x00\x00\x00\xFF\x00\x00\xFF\x00", "\x00\x00\x00\xFF\x00\x00\xFF\xFF","\x00\x00\x00\xFF\x00\xFF\x00\x00", "\x00\x00\x00\xFF\x00\xFF\x00\xFF","\x00\x00\x00\xFF\x00\xFF\xFF\x00", "\x00\x00\x00\xFF\x00\xFF\xFF\xFF","\x00\x00\x00\xFF\xFF\x00\x00\x00", "\x00\x00\x00\xFF\xFF\x00\x00\xFF","\x00\x00\x00\xFF\xFF\x00\xFF\x00", "\x00\x00\x00\xFF\xFF\x00\xFF\xFF","\x00\x00\x00\xFF\xFF\xFF\x00\x00", "\x00\x00\x00\xFF\xFF\xFF\x00\xFF","\x00\x00\x00\xFF\xFF\xFF\xFF\x00", "\x00\x00\x00\xFF\xFF\xFF\xFF\xFF","\x00\x00\xFF\x00\x00\x00\x00\x00", "\x00\x00\xFF\x00\x00\x00\x00\xFF","\x00\x00\xFF\x00\x00\x00\xFF\x00", "\x00\x00\xFF\x00\x00\x00\xFF\xFF","\x00\x00\xFF\x00\x00\xFF\x00\x00", "\x00\x00\xFF\x00\x00\xFF\x00\xFF","\x00\x00\xFF\x00\x00\xFF\xFF\x00", "\x00\x00\xFF\x00\x00\xFF\xFF\xFF","\x00\x00\xFF\x00\xFF\x00\x00\x00", "\x00\x00\xFF\x00\xFF\x00\x00\xFF","\x00\x00\xFF\x00\xFF\x00\xFF\x00", "\x00\x00\xFF\x00\xFF\x00\xFF\xFF","\x00\x00\xFF\x00\xFF\xFF\x00\x00", "\x00\x00\xFF\x00\xFF\xFF\x00\xFF","\x00\x00\xFF\x00\xFF\xFF\xFF\x00", "\x00\x00\xFF\x00\xFF\xFF\xFF\xFF","\x00\x00\xFF\xFF\x00\x00\x00\x00", "\x00\x00\xFF\xFF\x00\x00\x00\xFF","\x00\x00\xFF\xFF\x00\x00\xFF\x00", "\x00\x00\xFF\xFF\x00\x00\xFF\xFF","\x00\x00\xFF\xFF\x00\xFF\x00\x00", "\x00\x00\xFF\xFF\x00\xFF\x00\xFF","\x00\x00\xFF\xFF\x00\xFF\xFF\x00", "\x00\x00\xFF\xFF\x00\xFF\xFF\xFF","\x00\x00\xFF\xFF\xFF\x00\x00\x00", "\x00\x00\xFF\xFF\xFF\x00\x00\xFF","\x00\x00\xFF\xFF\xFF\x00\xFF\x00", "\x00\x00\xFF\xFF\xFF\x00\xFF\xFF","\x00\x00\xFF\xFF\xFF\xFF\x00\x00", "\x00\x00\xFF\xFF\xFF\xFF\x00\xFF","\x00\x00\xFF\xFF\xFF\xFF\xFF\x00", "\x00\x00\xFF\xFF\xFF\xFF\xFF\xFF","\x00\xFF\x00\x00\x00\x00\x00\x00", "\x00\xFF\x00\x00\x00\x00\x00\xFF","\x00\xFF\x00\x00\x00\x00\xFF\x00", "\x00\xFF\x00\x00\x00\x00\xFF\xFF","\x00\xFF\x00\x00\x00\xFF\x00\x00", "\x00\xFF\x00\x00\x00\xFF\x00\xFF","\x00\xFF\x00\x00\x00\xFF\xFF\x00", "\x00\xFF\x00\x00\x00\xFF\xFF\xFF","\x00\xFF\x00\x00\xFF\x00\x00\x00", "\x00\xFF\x00\x00\xFF\x00\x00\xFF","\x00\xFF\x00\x00\xFF\x00\xFF\x00", "\x00\xFF\x00\x00\xFF\x00\xFF\xFF","\x00\xFF\x00\x00\xFF\xFF\x00\x00", "\x00\xFF\x00\x00\xFF\xFF\x00\xFF","\x00\xFF\x00\x00\xFF\xFF\xFF\x00", "\x00\xFF\x00\x00\xFF\xFF\xFF\xFF","\x00\xFF\x00\xFF\x00\x00\x00\x00", "\x00\xFF\x00\xFF\x00\x00\x00\xFF","\x00\xFF\x00\xFF\x00\x00\xFF\x00", "\x00\xFF\x00\xFF\x00\x00\xFF\xFF","\x00\xFF\x00\xFF\x00\xFF\x00\x00", "\x00\xFF\x00\xFF\x00\xFF\x00\xFF","\x00\xFF\x00\xFF\x00\xFF\xFF\x00", "\x00\xFF\x00\xFF\x00\xFF\xFF\xFF","\x00\xFF\x00\xFF\xFF\x00\x00\x00", "\x00\xFF\x00\xFF\xFF\x00\x00\xFF","\x00\xFF\x00\xFF\xFF\x00\xFF\x00", "\x00\xFF\x00\xFF\xFF\x00\xFF\xFF","\x00\xFF\x00\xFF\xFF\xFF\x00\x00", "\x00\xFF\x00\xFF\xFF\xFF\x00\xFF","\x00\xFF\x00\xFF\xFF\xFF\xFF\x00", "\x00\xFF\x00\xFF\xFF\xFF\xFF\xFF","\x00\xFF\xFF\x00\x00\x00\x00\x00", "\x00\xFF\xFF\x00\x00\x00\x00\xFF","\x00\xFF\xFF\x00\x00\x00\xFF\x00", "\x00\xFF\xFF\x00\x00\x00\xFF\xFF","\x00\xFF\xFF\x00\x00\xFF\x00\x00", "\x00\xFF\xFF\x00\x00\xFF\x00\xFF","\x00\xFF\xFF\x00\x00\xFF\xFF\x00", "\x00\xFF\xFF\x00\x00\xFF\xFF\xFF","\x00\xFF\xFF\x00\xFF\x00\x00\x00", "\x00\xFF\xFF\x00\xFF\x00\x00\xFF","\x00\xFF\xFF\x00\xFF\x00\xFF\x00", "\x00\xFF\xFF\x00\xFF\x00\xFF\xFF","\x00\xFF\xFF\x00\xFF\xFF\x00\x00", "\x00\xFF\xFF\x00\xFF\xFF\x00\xFF","\x00\xFF\xFF\x00\xFF\xFF\xFF\x00", "\x00\xFF\xFF\x00\xFF\xFF\xFF\xFF","\x00\xFF\xFF\xFF\x00\x00\x00\x00", "\x00\xFF\xFF\xFF\x00\x00\x00\xFF","\x00\xFF\xFF\xFF\x00\x00\xFF\x00", "\x00\xFF\xFF\xFF\x00\x00\xFF\xFF","\x00\xFF\xFF\xFF\x00\xFF\x00\x00", "\x00\xFF\xFF\xFF\x00\xFF\x00\xFF","\x00\xFF\xFF\xFF\x00\xFF\xFF\x00", "\x00\xFF\xFF\xFF\x00\xFF\xFF\xFF","\x00\xFF\xFF\xFF\xFF\x00\x00\x00", "\x00\xFF\xFF\xFF\xFF\x00\x00\xFF","\x00\xFF\xFF\xFF\xFF\x00\xFF\x00", "\x00\xFF\xFF\xFF\xFF\x00\xFF\xFF","\x00\xFF\xFF\xFF\xFF\xFF\x00\x00", "\x00\xFF\xFF\xFF\xFF\xFF\x00\xFF","\x00\xFF\xFF\xFF\xFF\xFF\xFF\x00", "\x00\xFF\xFF\xFF\xFF\xFF\xFF\xFF","\xFF\x00\x00\x00\x00\x00\x00\x00", "\xFF\x00\x00\x00\x00\x00\x00\xFF","\xFF\x00\x00\x00\x00\x00\xFF\x00", "\xFF\x00\x00\x00\x00\x00\xFF\xFF","\xFF\x00\x00\x00\x00\xFF\x00\x00", "\xFF\x00\x00\x00\x00\xFF\x00\xFF","\xFF\x00\x00\x00\x00\xFF\xFF\x00", "\xFF\x00\x00\x00\x00\xFF\xFF\xFF","\xFF\x00\x00\x00\xFF\x00\x00\x00", "\xFF\x00\x00\x00\xFF\x00\x00\xFF","\xFF\x00\x00\x00\xFF\x00\xFF\x00", "\xFF\x00\x00\x00\xFF\x00\xFF\xFF","\xFF\x00\x00\x00\xFF\xFF\x00\x00", "\xFF\x00\x00\x00\xFF\xFF\x00\xFF","\xFF\x00\x00\x00\xFF\xFF\xFF\x00", "\xFF\x00\x00\x00\xFF\xFF\xFF\xFF","\xFF\x00\x00\xFF\x00\x00\x00\x00", "\xFF\x00\x00\xFF\x00\x00\x00\xFF","\xFF\x00\x00\xFF\x00\x00\xFF\x00", "\xFF\x00\x00\xFF\x00\x00\xFF\xFF","\xFF\x00\x00\xFF\x00\xFF\x00\x00", "\xFF\x00\x00\xFF\x00\xFF\x00\xFF","\xFF\x00\x00\xFF\x00\xFF\xFF\x00", "\xFF\x00\x00\xFF\x00\xFF\xFF\xFF","\xFF\x00\x00\xFF\xFF\x00\x00\x00", "\xFF\x00\x00\xFF\xFF\x00\x00\xFF","\xFF\x00\x00\xFF\xFF\x00\xFF\x00", "\xFF\x00\x00\xFF\xFF\x00\xFF\xFF","\xFF\x00\x00\xFF\xFF\xFF\x00\x00", "\xFF\x00\x00\xFF\xFF\xFF\x00\xFF","\xFF\x00\x00\xFF\xFF\xFF\xFF\x00", "\xFF\x00\x00\xFF\xFF\xFF\xFF\xFF","\xFF\x00\xFF\x00\x00\x00\x00\x00", "\xFF\x00\xFF\x00\x00\x00\x00\xFF","\xFF\x00\xFF\x00\x00\x00\xFF\x00", "\xFF\x00\xFF\x00\x00\x00\xFF\xFF","\xFF\x00\xFF\x00\x00\xFF\x00\x00", "\xFF\x00\xFF\x00\x00\xFF\x00\xFF","\xFF\x00\xFF\x00\x00\xFF\xFF\x00", "\xFF\x00\xFF\x00\x00\xFF\xFF\xFF","\xFF\x00\xFF\x00\xFF\x00\x00\x00", "\xFF\x00\xFF\x00\xFF\x00\x00\xFF","\xFF\x00\xFF\x00\xFF\x00\xFF\x00", "\xFF\x00\xFF\x00\xFF\x00\xFF\xFF","\xFF\x00\xFF\x00\xFF\xFF\x00\x00", "\xFF\x00\xFF\x00\xFF\xFF\x00\xFF","\xFF\x00\xFF\x00\xFF\xFF\xFF\x00", "\xFF\x00\xFF\x00\xFF\xFF\xFF\xFF","\xFF\x00\xFF\xFF\x00\x00\x00\x00", "\xFF\x00\xFF\xFF\x00\x00\x00\xFF","\xFF\x00\xFF\xFF\x00\x00\xFF\x00", "\xFF\x00\xFF\xFF\x00\x00\xFF\xFF","\xFF\x00\xFF\xFF\x00\xFF\x00\x00", "\xFF\x00\xFF\xFF\x00\xFF\x00\xFF","\xFF\x00\xFF\xFF\x00\xFF\xFF\x00", "\xFF\x00\xFF\xFF\x00\xFF\xFF\xFF","\xFF\x00\xFF\xFF\xFF\x00\x00\x00", "\xFF\x00\xFF\xFF\xFF\x00\x00\xFF","\xFF\x00\xFF\xFF\xFF\x00\xFF\x00", "\xFF\x00\xFF\xFF\xFF\x00\xFF\xFF","\xFF\x00\xFF\xFF\xFF\xFF\x00\x00", "\xFF\x00\xFF\xFF\xFF\xFF\x00\xFF","\xFF\x00\xFF\xFF\xFF\xFF\xFF\x00", "\xFF\x00\xFF\xFF\xFF\xFF\xFF\xFF","\xFF\xFF\x00\x00\x00\x00\x00\x00", "\xFF\xFF\x00\x00\x00\x00\x00\xFF","\xFF\xFF\x00\x00\x00\x00\xFF\x00", "\xFF\xFF\x00\x00\x00\x00\xFF\xFF","\xFF\xFF\x00\x00\x00\xFF\x00\x00", "\xFF\xFF\x00\x00\x00\xFF\x00\xFF","\xFF\xFF\x00\x00\x00\xFF\xFF\x00", "\xFF\xFF\x00\x00\x00\xFF\xFF\xFF","\xFF\xFF\x00\x00\xFF\x00\x00\x00", "\xFF\xFF\x00\x00\xFF\x00\x00\xFF","\xFF\xFF\x00\x00\xFF\x00\xFF\x00", "\xFF\xFF\x00\x00\xFF\x00\xFF\xFF","\xFF\xFF\x00\x00\xFF\xFF\x00\x00", "\xFF\xFF\x00\x00\xFF\xFF\x00\xFF","\xFF\xFF\x00\x00\xFF\xFF\xFF\x00", "\xFF\xFF\x00\x00\xFF\xFF\xFF\xFF","\xFF\xFF\x00\xFF\x00\x00\x00\x00", "\xFF\xFF\x00\xFF\x00\x00\x00\xFF","\xFF\xFF\x00\xFF\x00\x00\xFF\x00", "\xFF\xFF\x00\xFF\x00\x00\xFF\xFF","\xFF\xFF\x00\xFF\x00\xFF\x00\x00", "\xFF\xFF\x00\xFF\x00\xFF\x00\xFF","\xFF\xFF\x00\xFF\x00\xFF\xFF\x00", "\xFF\xFF\x00\xFF\x00\xFF\xFF\xFF","\xFF\xFF\x00\xFF\xFF\x00\x00\x00", "\xFF\xFF\x00\xFF\xFF\x00\x00\xFF","\xFF\xFF\x00\xFF\xFF\x00\xFF\x00", "\xFF\xFF\x00\xFF\xFF\x00\xFF\xFF","\xFF\xFF\x00\xFF\xFF\xFF\x00\x00", "\xFF\xFF\x00\xFF\xFF\xFF\x00\xFF","\xFF\xFF\x00\xFF\xFF\xFF\xFF\x00", "\xFF\xFF\x00\xFF\xFF\xFF\xFF\xFF","\xFF\xFF\xFF\x00\x00\x00\x00\x00", "\xFF\xFF\xFF\x00\x00\x00\x00\xFF","\xFF\xFF\xFF\x00\x00\x00\xFF\x00", "\xFF\xFF\xFF\x00\x00\x00\xFF\xFF","\xFF\xFF\xFF\x00\x00\xFF\x00\x00", "\xFF\xFF\xFF\x00\x00\xFF\x00\xFF","\xFF\xFF\xFF\x00\x00\xFF\xFF\x00", "\xFF\xFF\xFF\x00\x00\xFF\xFF\xFF","\xFF\xFF\xFF\x00\xFF\x00\x00\x00", "\xFF\xFF\xFF\x00\xFF\x00\x00\xFF","\xFF\xFF\xFF\x00\xFF\x00\xFF\x00", "\xFF\xFF\xFF\x00\xFF\x00\xFF\xFF","\xFF\xFF\xFF\x00\xFF\xFF\x00\x00", "\xFF\xFF\xFF\x00\xFF\xFF\x00\xFF","\xFF\xFF\xFF\x00\xFF\xFF\xFF\x00", "\xFF\xFF\xFF\x00\xFF\xFF\xFF\xFF","\xFF\xFF\xFF\xFF\x00\x00\x00\x00", "\xFF\xFF\xFF\xFF\x00\x00\x00\xFF","\xFF\xFF\xFF\xFF\x00\x00\xFF\x00", "\xFF\xFF\xFF\xFF\x00\x00\xFF\xFF","\xFF\xFF\xFF\xFF\x00\xFF\x00\x00", "\xFF\xFF\xFF\xFF\x00\xFF\x00\xFF","\xFF\xFF\xFF\xFF\x00\xFF\xFF\x00", "\xFF\xFF\xFF\xFF\x00\xFF\xFF\xFF","\xFF\xFF\xFF\xFF\xFF\x00\x00\x00", "\xFF\xFF\xFF\xFF\xFF\x00\x00\xFF","\xFF\xFF\xFF\xFF\xFF\x00\xFF\x00", "\xFF\xFF\xFF\xFF\xFF\x00\xFF\xFF","\xFF\xFF\xFF\xFF\xFF\xFF\x00\x00", "\xFF\xFF\xFF\xFF\xFF\xFF\x00\xFF","\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x00", "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF");/*** IP mapping helper table.** Indexing this table with each source byte performs the initial bit permutation.** @var array* @access private*/var $ipmap = array(0x00, 0x10, 0x01, 0x11, 0x20, 0x30, 0x21, 0x31,0x02, 0x12, 0x03, 0x13, 0x22, 0x32, 0x23, 0x33,0x40, 0x50, 0x41, 0x51, 0x60, 0x70, 0x61, 0x71,0x42, 0x52, 0x43, 0x53, 0x62, 0x72, 0x63, 0x73,0x04, 0x14, 0x05, 0x15, 0x24, 0x34, 0x25, 0x35,0x06, 0x16, 0x07, 0x17, 0x26, 0x36, 0x27, 0x37,0x44, 0x54, 0x45, 0x55, 0x64, 0x74, 0x65, 0x75,0x46, 0x56, 0x47, 0x57, 0x66, 0x76, 0x67, 0x77,0x80, 0x90, 0x81, 0x91, 0xA0, 0xB0, 0xA1, 0xB1,0x82, 0x92, 0x83, 0x93, 0xA2, 0xB2, 0xA3, 0xB3,0xC0, 0xD0, 0xC1, 0xD1, 0xE0, 0xF0, 0xE1, 0xF1,0xC2, 0xD2, 0xC3, 0xD3, 0xE2, 0xF2, 0xE3, 0xF3,0x84, 0x94, 0x85, 0x95, 0xA4, 0xB4, 0xA5, 0xB5,0x86, 0x96, 0x87, 0x97, 0xA6, 0xB6, 0xA7, 0xB7,0xC4, 0xD4, 0xC5, 0xD5, 0xE4, 0xF4, 0xE5, 0xF5,0xC6, 0xD6, 0xC7, 0xD7, 0xE6, 0xF6, 0xE7, 0xF7,0x08, 0x18, 0x09, 0x19, 0x28, 0x38, 0x29, 0x39,0x0A, 0x1A, 0x0B, 0x1B, 0x2A, 0x3A, 0x2B, 0x3B,0x48, 0x58, 0x49, 0x59, 0x68, 0x78, 0x69, 0x79,0x4A, 0x5A, 0x4B, 0x5B, 0x6A, 0x7A, 0x6B, 0x7B,0x0C, 0x1C, 0x0D, 0x1D, 0x2C, 0x3C, 0x2D, 0x3D,0x0E, 0x1E, 0x0F, 0x1F, 0x2E, 0x3E, 0x2F, 0x3F,0x4C, 0x5C, 0x4D, 0x5D, 0x6C, 0x7C, 0x6D, 0x7D,0x4E, 0x5E, 0x4F, 0x5F, 0x6E, 0x7E, 0x6F, 0x7F,0x88, 0x98, 0x89, 0x99, 0xA8, 0xB8, 0xA9, 0xB9,0x8A, 0x9A, 0x8B, 0x9B, 0xAA, 0xBA, 0xAB, 0xBB,0xC8, 0xD8, 0xC9, 0xD9, 0xE8, 0xF8, 0xE9, 0xF9,0xCA, 0xDA, 0xCB, 0xDB, 0xEA, 0xFA, 0xEB, 0xFB,0x8C, 0x9C, 0x8D, 0x9D, 0xAC, 0xBC, 0xAD, 0xBD,0x8E, 0x9E, 0x8F, 0x9F, 0xAE, 0xBE, 0xAF, 0xBF,0xCC, 0xDC, 0xCD, 0xDD, 0xEC, 0xFC, 0xED, 0xFD,0xCE, 0xDE, 0xCF, 0xDF, 0xEE, 0xFE, 0xEF, 0xFF);/*** Inverse IP mapping helper table.* Indexing this table with a byte value reverses the bit order.** @var array* @access private*/var $invipmap = array(0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0,0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8,0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8,0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4,0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4,0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC,0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC,0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2,0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2,0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA,0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA,0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6,0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6,0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE,0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE,0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1,0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1,0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9,0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9,0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5,0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5,0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED,0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD,0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3,0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3,0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB,0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB,0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7,0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7,0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF,0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF);/*** Pre-permuted S-box1** Each box ($sbox1-$sbox8) has been vectorized, then each value pre-permuted using the* P table: concatenation can then be replaced by exclusive ORs.** @var array* @access private*/var $sbox1 = array(0x00808200, 0x00000000, 0x00008000, 0x00808202,0x00808002, 0x00008202, 0x00000002, 0x00008000,0x00000200, 0x00808200, 0x00808202, 0x00000200,0x00800202, 0x00808002, 0x00800000, 0x00000002,0x00000202, 0x00800200, 0x00800200, 0x00008200,0x00008200, 0x00808000, 0x00808000, 0x00800202,0x00008002, 0x00800002, 0x00800002, 0x00008002,0x00000000, 0x00000202, 0x00008202, 0x00800000,0x00008000, 0x00808202, 0x00000002, 0x00808000,0x00808200, 0x00800000, 0x00800000, 0x00000200,0x00808002, 0x00008000, 0x00008200, 0x00800002,0x00000200, 0x00000002, 0x00800202, 0x00008202,0x00808202, 0x00008002, 0x00808000, 0x00800202,0x00800002, 0x00000202, 0x00008202, 0x00808200,0x00000202, 0x00800200, 0x00800200, 0x00000000,0x00008002, 0x00008200, 0x00000000, 0x00808002);/*** Pre-permuted S-box2** @var array* @access private*/var $sbox2 = array(0x40084010, 0x40004000, 0x00004000, 0x00084010,0x00080000, 0x00000010, 0x40080010, 0x40004010,0x40000010, 0x40084010, 0x40084000, 0x40000000,0x40004000, 0x00080000, 0x00000010, 0x40080010,0x00084000, 0x00080010, 0x40004010, 0x00000000,0x40000000, 0x00004000, 0x00084010, 0x40080000,0x00080010, 0x40000010, 0x00000000, 0x00084000,0x00004010, 0x40084000, 0x40080000, 0x00004010,0x00000000, 0x00084010, 0x40080010, 0x00080000,0x40004010, 0x40080000, 0x40084000, 0x00004000,0x40080000, 0x40004000, 0x00000010, 0x40084010,0x00084010, 0x00000010, 0x00004000, 0x40000000,0x00004010, 0x40084000, 0x00080000, 0x40000010,0x00080010, 0x40004010, 0x40000010, 0x00080010,0x00084000, 0x00000000, 0x40004000, 0x00004010,0x40000000, 0x40080010, 0x40084010, 0x00084000);/*** Pre-permuted S-box3** @var array* @access private*/var $sbox3 = array(0x00000104, 0x04010100, 0x00000000, 0x04010004,0x04000100, 0x00000000, 0x00010104, 0x04000100,0x00010004, 0x04000004, 0x04000004, 0x00010000,0x04010104, 0x00010004, 0x04010000, 0x00000104,0x04000000, 0x00000004, 0x04010100, 0x00000100,0x00010100, 0x04010000, 0x04010004, 0x00010104,0x04000104, 0x00010100, 0x00010000, 0x04000104,0x00000004, 0x04010104, 0x00000100, 0x04000000,0x04010100, 0x04000000, 0x00010004, 0x00000104,0x00010000, 0x04010100, 0x04000100, 0x00000000,0x00000100, 0x00010004, 0x04010104, 0x04000100,0x04000004, 0x00000100, 0x00000000, 0x04010004,0x04000104, 0x00010000, 0x04000000, 0x04010104,0x00000004, 0x00010104, 0x00010100, 0x04000004,0x04010000, 0x04000104, 0x00000104, 0x04010000,0x00010104, 0x00000004, 0x04010004, 0x00010100);/*** Pre-permuted S-box4** @var array* @access private*/var $sbox4 = array(0x80401000, 0x80001040, 0x80001040, 0x00000040,0x00401040, 0x80400040, 0x80400000, 0x80001000,0x00000000, 0x00401000, 0x00401000, 0x80401040,0x80000040, 0x00000000, 0x00400040, 0x80400000,0x80000000, 0x00001000, 0x00400000, 0x80401000,0x00000040, 0x00400000, 0x80001000, 0x00001040,0x80400040, 0x80000000, 0x00001040, 0x00400040,0x00001000, 0x00401040, 0x80401040, 0x80000040,0x00400040, 0x80400000, 0x00401000, 0x80401040,0x80000040, 0x00000000, 0x00000000, 0x00401000,0x00001040, 0x00400040, 0x80400040, 0x80000000,0x80401000, 0x80001040, 0x80001040, 0x00000040,0x80401040, 0x80000040, 0x80000000, 0x00001000,0x80400000, 0x80001000, 0x00401040, 0x80400040,0x80001000, 0x00001040, 0x00400000, 0x80401000,0x00000040, 0x00400000, 0x00001000, 0x00401040);/*** Pre-permuted S-box5** @var array* @access private*/var $sbox5 = array(0x00000080, 0x01040080, 0x01040000, 0x21000080,0x00040000, 0x00000080, 0x20000000, 0x01040000,0x20040080, 0x00040000, 0x01000080, 0x20040080,0x21000080, 0x21040000, 0x00040080, 0x20000000,0x01000000, 0x20040000, 0x20040000, 0x00000000,0x20000080, 0x21040080, 0x21040080, 0x01000080,0x21040000, 0x20000080, 0x00000000, 0x21000000,0x01040080, 0x01000000, 0x21000000, 0x00040080,0x00040000, 0x21000080, 0x00000080, 0x01000000,0x20000000, 0x01040000, 0x21000080, 0x20040080,0x01000080, 0x20000000, 0x21040000, 0x01040080,0x20040080, 0x00000080, 0x01000000, 0x21040000,0x21040080, 0x00040080, 0x21000000, 0x21040080,0x01040000, 0x00000000, 0x20040000, 0x21000000,0x00040080, 0x01000080, 0x20000080, 0x00040000,0x00000000, 0x20040000, 0x01040080, 0x20000080);/*** Pre-permuted S-box6** @var array* @access private*/var $sbox6 = array(0x10000008, 0x10200000, 0x00002000, 0x10202008,0x10200000, 0x00000008, 0x10202008, 0x00200000,0x10002000, 0x00202008, 0x00200000, 0x10000008,0x00200008, 0x10002000, 0x10000000, 0x00002008,0x00000000, 0x00200008, 0x10002008, 0x00002000,0x00202000, 0x10002008, 0x00000008, 0x10200008,0x10200008, 0x00000000, 0x00202008, 0x10202000,0x00002008, 0x00202000, 0x10202000, 0x10000000,0x10002000, 0x00000008, 0x10200008, 0x00202000,0x10202008, 0x00200000, 0x00002008, 0x10000008,0x00200000, 0x10002000, 0x10000000, 0x00002008,0x10000008, 0x10202008, 0x00202000, 0x10200000,0x00202008, 0x10202000, 0x00000000, 0x10200008,0x00000008, 0x00002000, 0x10200000, 0x00202008,0x00002000, 0x00200008, 0x10002008, 0x00000000,0x10202000, 0x10000000, 0x00200008, 0x10002008);/*** Pre-permuted S-box7** @var array* @access private*/var $sbox7 = array(0x00100000, 0x02100001, 0x02000401, 0x00000000,0x00000400, 0x02000401, 0x00100401, 0x02100400,0x02100401, 0x00100000, 0x00000000, 0x02000001,0x00000001, 0x02000000, 0x02100001, 0x00000401,0x02000400, 0x00100401, 0x00100001, 0x02000400,0x02000001, 0x02100000, 0x02100400, 0x00100001,0x02100000, 0x00000400, 0x00000401, 0x02100401,0x00100400, 0x00000001, 0x02000000, 0x00100400,0x02000000, 0x00100400, 0x00100000, 0x02000401,0x02000401, 0x02100001, 0x02100001, 0x00000001,0x00100001, 0x02000000, 0x02000400, 0x00100000,0x02100400, 0x00000401, 0x00100401, 0x02100400,0x00000401, 0x02000001, 0x02100401, 0x02100000,0x00100400, 0x00000000, 0x00000001, 0x02100401,0x00000000, 0x00100401, 0x02100000, 0x00000400,0x02000001, 0x02000400, 0x00000400, 0x00100001);/*** Pre-permuted S-box8** @var array* @access private*/var $sbox8 = array(0x08000820, 0x00000800, 0x00020000, 0x08020820,0x08000000, 0x08000820, 0x00000020, 0x08000000,0x00020020, 0x08020000, 0x08020820, 0x00020800,0x08020800, 0x00020820, 0x00000800, 0x00000020,0x08020000, 0x08000020, 0x08000800, 0x00000820,0x00020800, 0x00020020, 0x08020020, 0x08020800,0x00000820, 0x00000000, 0x00000000, 0x08020020,0x08000020, 0x08000800, 0x00020820, 0x00020000,0x00020820, 0x00020000, 0x08020800, 0x00000800,0x00000020, 0x08020020, 0x00000800, 0x00020820,0x08000800, 0x00000020, 0x08000020, 0x08020000,0x08020020, 0x08000000, 0x00020000, 0x08000820,0x00000000, 0x08020820, 0x00020020, 0x08000020,0x08020000, 0x08000800, 0x08000820, 0x00000000,0x08020820, 0x00020800, 0x00020800, 0x00000820,0x00000820, 0x00020020, 0x08000000, 0x08020800);/*** Test for engine validity** This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()** @see \phpseclib\Crypt\Base::isValidEngine()* @param int $engine* @access public* @return bool*/function isValidEngine($engine){if ($this->key_length_max == 8) {if ($engine == self::ENGINE_OPENSSL) {$this->cipher_name_openssl_ecb = 'des-ecb';$this->cipher_name_openssl = 'des-' . $this->_openssl_translate_mode();}}return parent::isValidEngine($engine);}/*** Sets the key.** Keys can be of any length. DES, itself, uses 64-bit keys (eg. strlen($key) == 8), however, we* only use the first eight, if $key has more then eight characters in it, and pad $key with the* null byte if it is less then eight characters long.** DES also requires that every eighth bit be a parity bit, however, we'll ignore that.** If the key is not explicitly set, it'll be assumed to be all zero's.** @see \phpseclib\Crypt\Base::setKey()* @access public* @param string $key*/function setKey($key){// We check/cut here only up to max length of the key.// Key padding to the proper length will be done in _setupKey()if (strlen($key) > $this->key_length_max) {$key = substr($key, 0, $this->key_length_max);}// Sets the keyparent::setKey($key);}/*** Encrypts a block** @see \phpseclib\Crypt\Base::_encryptBlock()* @see \phpseclib\Crypt\Base::encrypt()* @see self::encrypt()* @access private* @param string $in* @return string*/function _encryptBlock($in){return $this->_processBlock($in, self::ENCRYPT);}/*** Decrypts a block** @see \phpseclib\Crypt\Base::_decryptBlock()* @see \phpseclib\Crypt\Base::decrypt()* @see self::decrypt()* @access private* @param string $in* @return string*/function _decryptBlock($in){return $this->_processBlock($in, self::DECRYPT);}/*** Encrypts or decrypts a 64-bit block** $mode should be either self::ENCRYPT or self::DECRYPT. See* {@link http://en.wikipedia.org/wiki/Image:Feistel.png Feistel.png} to get a general* idea of what this function does.** @see self::_encryptBlock()* @see self::_decryptBlock()* @access private* @param string $block* @param int $mode* @return string*/function _processBlock($block, $mode){static $sbox1, $sbox2, $sbox3, $sbox4, $sbox5, $sbox6, $sbox7, $sbox8, $shuffleip, $shuffleinvip;if (!$sbox1) {$sbox1 = array_map("intval", $this->sbox1);$sbox2 = array_map("intval", $this->sbox2);$sbox3 = array_map("intval", $this->sbox3);$sbox4 = array_map("intval", $this->sbox4);$sbox5 = array_map("intval", $this->sbox5);$sbox6 = array_map("intval", $this->sbox6);$sbox7 = array_map("intval", $this->sbox7);$sbox8 = array_map("intval", $this->sbox8);/* Merge $shuffle with $[inv]ipmap */for ($i = 0; $i < 256; ++$i) {$shuffleip[] = $this->shuffle[$this->ipmap[$i]];$shuffleinvip[] = $this->shuffle[$this->invipmap[$i]];}}$keys = $this->keys[$mode];$ki = -1;// Do the initial IP permutation.$t = unpack('Nl/Nr', $block);list($l, $r) = array($t['l'], $t['r']);$block = ($shuffleip[ $r & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") |($shuffleip[($r >> 8) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") |($shuffleip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") |($shuffleip[($r >> 24) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") |($shuffleip[ $l & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") |($shuffleip[($l >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") |($shuffleip[($l >> 16) & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") |($shuffleip[($l >> 24) & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01");// Extract L0 and R0.$t = unpack('Nl/Nr', $block);list($l, $r) = array($t['l'], $t['r']);for ($des_round = 0; $des_round < $this->des_rounds; ++$des_round) {// Perform the 16 steps.for ($i = 0; $i < 16; $i++) {// start of "the Feistel (F) function" - see the following URL:// http://en.wikipedia.org/wiki/Image:Data_Encryption_Standard_InfoBox_Diagram.png// Merge key schedule.$b1 = (($r >> 3) & 0x1FFFFFFF) ^ ($r << 29) ^ $keys[++$ki];$b2 = (($r >> 31) & 0x00000001) ^ ($r << 1) ^ $keys[++$ki];// S-box indexing.$t = $sbox1[($b1 >> 24) & 0x3F] ^ $sbox2[($b2 >> 24) & 0x3F] ^$sbox3[($b1 >> 16) & 0x3F] ^ $sbox4[($b2 >> 16) & 0x3F] ^$sbox5[($b1 >> 8) & 0x3F] ^ $sbox6[($b2 >> 8) & 0x3F] ^$sbox7[ $b1 & 0x3F] ^ $sbox8[ $b2 & 0x3F] ^ $l;// end of "the Feistel (F) function"$l = $r;$r = $t;}// Last step should not permute L & R.$t = $l;$l = $r;$r = $t;}// Perform the inverse IP permutation.return ($shuffleinvip[($r >> 24) & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") |($shuffleinvip[($l >> 24) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") |($shuffleinvip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") |($shuffleinvip[($l >> 16) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") |($shuffleinvip[($r >> 8) & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") |($shuffleinvip[($l >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") |($shuffleinvip[ $r & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") |($shuffleinvip[ $l & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01");}/*** Creates the key schedule** @see \phpseclib\Crypt\Base::_setupKey()* @access private*/function _setupKey(){if (isset($this->kl['key']) && $this->key === $this->kl['key'] && $this->des_rounds === $this->kl['des_rounds']) {// already expandedreturn;}$this->kl = array('key' => $this->key, 'des_rounds' => $this->des_rounds);static $shifts = array( // number of key bits shifted per round1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1);static $pc1map = array(0x00, 0x00, 0x08, 0x08, 0x04, 0x04, 0x0C, 0x0C,0x02, 0x02, 0x0A, 0x0A, 0x06, 0x06, 0x0E, 0x0E,0x10, 0x10, 0x18, 0x18, 0x14, 0x14, 0x1C, 0x1C,0x12, 0x12, 0x1A, 0x1A, 0x16, 0x16, 0x1E, 0x1E,0x20, 0x20, 0x28, 0x28, 0x24, 0x24, 0x2C, 0x2C,0x22, 0x22, 0x2A, 0x2A, 0x26, 0x26, 0x2E, 0x2E,0x30, 0x30, 0x38, 0x38, 0x34, 0x34, 0x3C, 0x3C,0x32, 0x32, 0x3A, 0x3A, 0x36, 0x36, 0x3E, 0x3E,0x40, 0x40, 0x48, 0x48, 0x44, 0x44, 0x4C, 0x4C,0x42, 0x42, 0x4A, 0x4A, 0x46, 0x46, 0x4E, 0x4E,0x50, 0x50, 0x58, 0x58, 0x54, 0x54, 0x5C, 0x5C,0x52, 0x52, 0x5A, 0x5A, 0x56, 0x56, 0x5E, 0x5E,0x60, 0x60, 0x68, 0x68, 0x64, 0x64, 0x6C, 0x6C,0x62, 0x62, 0x6A, 0x6A, 0x66, 0x66, 0x6E, 0x6E,0x70, 0x70, 0x78, 0x78, 0x74, 0x74, 0x7C, 0x7C,0x72, 0x72, 0x7A, 0x7A, 0x76, 0x76, 0x7E, 0x7E,0x80, 0x80, 0x88, 0x88, 0x84, 0x84, 0x8C, 0x8C,0x82, 0x82, 0x8A, 0x8A, 0x86, 0x86, 0x8E, 0x8E,0x90, 0x90, 0x98, 0x98, 0x94, 0x94, 0x9C, 0x9C,0x92, 0x92, 0x9A, 0x9A, 0x96, 0x96, 0x9E, 0x9E,0xA0, 0xA0, 0xA8, 0xA8, 0xA4, 0xA4, 0xAC, 0xAC,0xA2, 0xA2, 0xAA, 0xAA, 0xA6, 0xA6, 0xAE, 0xAE,0xB0, 0xB0, 0xB8, 0xB8, 0xB4, 0xB4, 0xBC, 0xBC,0xB2, 0xB2, 0xBA, 0xBA, 0xB6, 0xB6, 0xBE, 0xBE,0xC0, 0xC0, 0xC8, 0xC8, 0xC4, 0xC4, 0xCC, 0xCC,0xC2, 0xC2, 0xCA, 0xCA, 0xC6, 0xC6, 0xCE, 0xCE,0xD0, 0xD0, 0xD8, 0xD8, 0xD4, 0xD4, 0xDC, 0xDC,0xD2, 0xD2, 0xDA, 0xDA, 0xD6, 0xD6, 0xDE, 0xDE,0xE0, 0xE0, 0xE8, 0xE8, 0xE4, 0xE4, 0xEC, 0xEC,0xE2, 0xE2, 0xEA, 0xEA, 0xE6, 0xE6, 0xEE, 0xEE,0xF0, 0xF0, 0xF8, 0xF8, 0xF4, 0xF4, 0xFC, 0xFC,0xF2, 0xF2, 0xFA, 0xFA, 0xF6, 0xF6, 0xFE, 0xFE);// Mapping tables for the PC-2 transformation.static $pc2mapc1 = array(0x00000000, 0x00000400, 0x00200000, 0x00200400,0x00000001, 0x00000401, 0x00200001, 0x00200401,0x02000000, 0x02000400, 0x02200000, 0x02200400,0x02000001, 0x02000401, 0x02200001, 0x02200401);static $pc2mapc2 = array(0x00000000, 0x00000800, 0x08000000, 0x08000800,0x00010000, 0x00010800, 0x08010000, 0x08010800,0x00000000, 0x00000800, 0x08000000, 0x08000800,0x00010000, 0x00010800, 0x08010000, 0x08010800,0x00000100, 0x00000900, 0x08000100, 0x08000900,0x00010100, 0x00010900, 0x08010100, 0x08010900,0x00000100, 0x00000900, 0x08000100, 0x08000900,0x00010100, 0x00010900, 0x08010100, 0x08010900,0x00000010, 0x00000810, 0x08000010, 0x08000810,0x00010010, 0x00010810, 0x08010010, 0x08010810,0x00000010, 0x00000810, 0x08000010, 0x08000810,0x00010010, 0x00010810, 0x08010010, 0x08010810,0x00000110, 0x00000910, 0x08000110, 0x08000910,0x00010110, 0x00010910, 0x08010110, 0x08010910,0x00000110, 0x00000910, 0x08000110, 0x08000910,0x00010110, 0x00010910, 0x08010110, 0x08010910,0x00040000, 0x00040800, 0x08040000, 0x08040800,0x00050000, 0x00050800, 0x08050000, 0x08050800,0x00040000, 0x00040800, 0x08040000, 0x08040800,0x00050000, 0x00050800, 0x08050000, 0x08050800,0x00040100, 0x00040900, 0x08040100, 0x08040900,0x00050100, 0x00050900, 0x08050100, 0x08050900,0x00040100, 0x00040900, 0x08040100, 0x08040900,0x00050100, 0x00050900, 0x08050100, 0x08050900,0x00040010, 0x00040810, 0x08040010, 0x08040810,0x00050010, 0x00050810, 0x08050010, 0x08050810,0x00040010, 0x00040810, 0x08040010, 0x08040810,0x00050010, 0x00050810, 0x08050010, 0x08050810,0x00040110, 0x00040910, 0x08040110, 0x08040910,0x00050110, 0x00050910, 0x08050110, 0x08050910,0x00040110, 0x00040910, 0x08040110, 0x08040910,0x00050110, 0x00050910, 0x08050110, 0x08050910,0x01000000, 0x01000800, 0x09000000, 0x09000800,0x01010000, 0x01010800, 0x09010000, 0x09010800,0x01000000, 0x01000800, 0x09000000, 0x09000800,0x01010000, 0x01010800, 0x09010000, 0x09010800,0x01000100, 0x01000900, 0x09000100, 0x09000900,0x01010100, 0x01010900, 0x09010100, 0x09010900,0x01000100, 0x01000900, 0x09000100, 0x09000900,0x01010100, 0x01010900, 0x09010100, 0x09010900,0x01000010, 0x01000810, 0x09000010, 0x09000810,0x01010010, 0x01010810, 0x09010010, 0x09010810,0x01000010, 0x01000810, 0x09000010, 0x09000810,0x01010010, 0x01010810, 0x09010010, 0x09010810,0x01000110, 0x01000910, 0x09000110, 0x09000910,0x01010110, 0x01010910, 0x09010110, 0x09010910,0x01000110, 0x01000910, 0x09000110, 0x09000910,0x01010110, 0x01010910, 0x09010110, 0x09010910,0x01040000, 0x01040800, 0x09040000, 0x09040800,0x01050000, 0x01050800, 0x09050000, 0x09050800,0x01040000, 0x01040800, 0x09040000, 0x09040800,0x01050000, 0x01050800, 0x09050000, 0x09050800,0x01040100, 0x01040900, 0x09040100, 0x09040900,0x01050100, 0x01050900, 0x09050100, 0x09050900,0x01040100, 0x01040900, 0x09040100, 0x09040900,0x01050100, 0x01050900, 0x09050100, 0x09050900,0x01040010, 0x01040810, 0x09040010, 0x09040810,0x01050010, 0x01050810, 0x09050010, 0x09050810,0x01040010, 0x01040810, 0x09040010, 0x09040810,0x01050010, 0x01050810, 0x09050010, 0x09050810,0x01040110, 0x01040910, 0x09040110, 0x09040910,0x01050110, 0x01050910, 0x09050110, 0x09050910,0x01040110, 0x01040910, 0x09040110, 0x09040910,0x01050110, 0x01050910, 0x09050110, 0x09050910);static $pc2mapc3 = array(0x00000000, 0x00000004, 0x00001000, 0x00001004,0x00000000, 0x00000004, 0x00001000, 0x00001004,0x10000000, 0x10000004, 0x10001000, 0x10001004,0x10000000, 0x10000004, 0x10001000, 0x10001004,0x00000020, 0x00000024, 0x00001020, 0x00001024,0x00000020, 0x00000024, 0x00001020, 0x00001024,0x10000020, 0x10000024, 0x10001020, 0x10001024,0x10000020, 0x10000024, 0x10001020, 0x10001024,0x00080000, 0x00080004, 0x00081000, 0x00081004,0x00080000, 0x00080004, 0x00081000, 0x00081004,0x10080000, 0x10080004, 0x10081000, 0x10081004,0x10080000, 0x10080004, 0x10081000, 0x10081004,0x00080020, 0x00080024, 0x00081020, 0x00081024,0x00080020, 0x00080024, 0x00081020, 0x00081024,0x10080020, 0x10080024, 0x10081020, 0x10081024,0x10080020, 0x10080024, 0x10081020, 0x10081024,0x20000000, 0x20000004, 0x20001000, 0x20001004,0x20000000, 0x20000004, 0x20001000, 0x20001004,0x30000000, 0x30000004, 0x30001000, 0x30001004,0x30000000, 0x30000004, 0x30001000, 0x30001004,0x20000020, 0x20000024, 0x20001020, 0x20001024,0x20000020, 0x20000024, 0x20001020, 0x20001024,0x30000020, 0x30000024, 0x30001020, 0x30001024,0x30000020, 0x30000024, 0x30001020, 0x30001024,0x20080000, 0x20080004, 0x20081000, 0x20081004,0x20080000, 0x20080004, 0x20081000, 0x20081004,0x30080000, 0x30080004, 0x30081000, 0x30081004,0x30080000, 0x30080004, 0x30081000, 0x30081004,0x20080020, 0x20080024, 0x20081020, 0x20081024,0x20080020, 0x20080024, 0x20081020, 0x20081024,0x30080020, 0x30080024, 0x30081020, 0x30081024,0x30080020, 0x30080024, 0x30081020, 0x30081024,0x00000002, 0x00000006, 0x00001002, 0x00001006,0x00000002, 0x00000006, 0x00001002, 0x00001006,0x10000002, 0x10000006, 0x10001002, 0x10001006,0x10000002, 0x10000006, 0x10001002, 0x10001006,0x00000022, 0x00000026, 0x00001022, 0x00001026,0x00000022, 0x00000026, 0x00001022, 0x00001026,0x10000022, 0x10000026, 0x10001022, 0x10001026,0x10000022, 0x10000026, 0x10001022, 0x10001026,0x00080002, 0x00080006, 0x00081002, 0x00081006,0x00080002, 0x00080006, 0x00081002, 0x00081006,0x10080002, 0x10080006, 0x10081002, 0x10081006,0x10080002, 0x10080006, 0x10081002, 0x10081006,0x00080022, 0x00080026, 0x00081022, 0x00081026,0x00080022, 0x00080026, 0x00081022, 0x00081026,0x10080022, 0x10080026, 0x10081022, 0x10081026,0x10080022, 0x10080026, 0x10081022, 0x10081026,0x20000002, 0x20000006, 0x20001002, 0x20001006,0x20000002, 0x20000006, 0x20001002, 0x20001006,0x30000002, 0x30000006, 0x30001002, 0x30001006,0x30000002, 0x30000006, 0x30001002, 0x30001006,0x20000022, 0x20000026, 0x20001022, 0x20001026,0x20000022, 0x20000026, 0x20001022, 0x20001026,0x30000022, 0x30000026, 0x30001022, 0x30001026,0x30000022, 0x30000026, 0x30001022, 0x30001026,0x20080002, 0x20080006, 0x20081002, 0x20081006,0x20080002, 0x20080006, 0x20081002, 0x20081006,0x30080002, 0x30080006, 0x30081002, 0x30081006,0x30080002, 0x30080006, 0x30081002, 0x30081006,0x20080022, 0x20080026, 0x20081022, 0x20081026,0x20080022, 0x20080026, 0x20081022, 0x20081026,0x30080022, 0x30080026, 0x30081022, 0x30081026,0x30080022, 0x30080026, 0x30081022, 0x30081026);static $pc2mapc4 = array(0x00000000, 0x00100000, 0x00000008, 0x00100008,0x00000200, 0x00100200, 0x00000208, 0x00100208,0x00000000, 0x00100000, 0x00000008, 0x00100008,0x00000200, 0x00100200, 0x00000208, 0x00100208,0x04000000, 0x04100000, 0x04000008, 0x04100008,0x04000200, 0x04100200, 0x04000208, 0x04100208,0x04000000, 0x04100000, 0x04000008, 0x04100008,0x04000200, 0x04100200, 0x04000208, 0x04100208,0x00002000, 0x00102000, 0x00002008, 0x00102008,0x00002200, 0x00102200, 0x00002208, 0x00102208,0x00002000, 0x00102000, 0x00002008, 0x00102008,0x00002200, 0x00102200, 0x00002208, 0x00102208,0x04002000, 0x04102000, 0x04002008, 0x04102008,0x04002200, 0x04102200, 0x04002208, 0x04102208,0x04002000, 0x04102000, 0x04002008, 0x04102008,0x04002200, 0x04102200, 0x04002208, 0x04102208,0x00000000, 0x00100000, 0x00000008, 0x00100008,0x00000200, 0x00100200, 0x00000208, 0x00100208,0x00000000, 0x00100000, 0x00000008, 0x00100008,0x00000200, 0x00100200, 0x00000208, 0x00100208,0x04000000, 0x04100000, 0x04000008, 0x04100008,0x04000200, 0x04100200, 0x04000208, 0x04100208,0x04000000, 0x04100000, 0x04000008, 0x04100008,0x04000200, 0x04100200, 0x04000208, 0x04100208,0x00002000, 0x00102000, 0x00002008, 0x00102008,0x00002200, 0x00102200, 0x00002208, 0x00102208,0x00002000, 0x00102000, 0x00002008, 0x00102008,0x00002200, 0x00102200, 0x00002208, 0x00102208,0x04002000, 0x04102000, 0x04002008, 0x04102008,0x04002200, 0x04102200, 0x04002208, 0x04102208,0x04002000, 0x04102000, 0x04002008, 0x04102008,0x04002200, 0x04102200, 0x04002208, 0x04102208,0x00020000, 0x00120000, 0x00020008, 0x00120008,0x00020200, 0x00120200, 0x00020208, 0x00120208,0x00020000, 0x00120000, 0x00020008, 0x00120008,0x00020200, 0x00120200, 0x00020208, 0x00120208,0x04020000, 0x04120000, 0x04020008, 0x04120008,0x04020200, 0x04120200, 0x04020208, 0x04120208,0x04020000, 0x04120000, 0x04020008, 0x04120008,0x04020200, 0x04120200, 0x04020208, 0x04120208,0x00022000, 0x00122000, 0x00022008, 0x00122008,0x00022200, 0x00122200, 0x00022208, 0x00122208,0x00022000, 0x00122000, 0x00022008, 0x00122008,0x00022200, 0x00122200, 0x00022208, 0x00122208,0x04022000, 0x04122000, 0x04022008, 0x04122008,0x04022200, 0x04122200, 0x04022208, 0x04122208,0x04022000, 0x04122000, 0x04022008, 0x04122008,0x04022200, 0x04122200, 0x04022208, 0x04122208,0x00020000, 0x00120000, 0x00020008, 0x00120008,0x00020200, 0x00120200, 0x00020208, 0x00120208,0x00020000, 0x00120000, 0x00020008, 0x00120008,0x00020200, 0x00120200, 0x00020208, 0x00120208,0x04020000, 0x04120000, 0x04020008, 0x04120008,0x04020200, 0x04120200, 0x04020208, 0x04120208,0x04020000, 0x04120000, 0x04020008, 0x04120008,0x04020200, 0x04120200, 0x04020208, 0x04120208,0x00022000, 0x00122000, 0x00022008, 0x00122008,0x00022200, 0x00122200, 0x00022208, 0x00122208,0x00022000, 0x00122000, 0x00022008, 0x00122008,0x00022200, 0x00122200, 0x00022208, 0x00122208,0x04022000, 0x04122000, 0x04022008, 0x04122008,0x04022200, 0x04122200, 0x04022208, 0x04122208,0x04022000, 0x04122000, 0x04022008, 0x04122008,0x04022200, 0x04122200, 0x04022208, 0x04122208);static $pc2mapd1 = array(0x00000000, 0x00000001, 0x08000000, 0x08000001,0x00200000, 0x00200001, 0x08200000, 0x08200001,0x00000002, 0x00000003, 0x08000002, 0x08000003,0x00200002, 0x00200003, 0x08200002, 0x08200003);static $pc2mapd2 = array(0x00000000, 0x00100000, 0x00000800, 0x00100800,0x00000000, 0x00100000, 0x00000800, 0x00100800,0x04000000, 0x04100000, 0x04000800, 0x04100800,0x04000000, 0x04100000, 0x04000800, 0x04100800,0x00000004, 0x00100004, 0x00000804, 0x00100804,0x00000004, 0x00100004, 0x00000804, 0x00100804,0x04000004, 0x04100004, 0x04000804, 0x04100804,0x04000004, 0x04100004, 0x04000804, 0x04100804,0x00000000, 0x00100000, 0x00000800, 0x00100800,0x00000000, 0x00100000, 0x00000800, 0x00100800,0x04000000, 0x04100000, 0x04000800, 0x04100800,0x04000000, 0x04100000, 0x04000800, 0x04100800,0x00000004, 0x00100004, 0x00000804, 0x00100804,0x00000004, 0x00100004, 0x00000804, 0x00100804,0x04000004, 0x04100004, 0x04000804, 0x04100804,0x04000004, 0x04100004, 0x04000804, 0x04100804,0x00000200, 0x00100200, 0x00000A00, 0x00100A00,0x00000200, 0x00100200, 0x00000A00, 0x00100A00,0x04000200, 0x04100200, 0x04000A00, 0x04100A00,0x04000200, 0x04100200, 0x04000A00, 0x04100A00,0x00000204, 0x00100204, 0x00000A04, 0x00100A04,0x00000204, 0x00100204, 0x00000A04, 0x00100A04,0x04000204, 0x04100204, 0x04000A04, 0x04100A04,0x04000204, 0x04100204, 0x04000A04, 0x04100A04,0x00000200, 0x00100200, 0x00000A00, 0x00100A00,0x00000200, 0x00100200, 0x00000A00, 0x00100A00,0x04000200, 0x04100200, 0x04000A00, 0x04100A00,0x04000200, 0x04100200, 0x04000A00, 0x04100A00,0x00000204, 0x00100204, 0x00000A04, 0x00100A04,0x00000204, 0x00100204, 0x00000A04, 0x00100A04,0x04000204, 0x04100204, 0x04000A04, 0x04100A04,0x04000204, 0x04100204, 0x04000A04, 0x04100A04,0x00020000, 0x00120000, 0x00020800, 0x00120800,0x00020000, 0x00120000, 0x00020800, 0x00120800,0x04020000, 0x04120000, 0x04020800, 0x04120800,0x04020000, 0x04120000, 0x04020800, 0x04120800,0x00020004, 0x00120004, 0x00020804, 0x00120804,0x00020004, 0x00120004, 0x00020804, 0x00120804,0x04020004, 0x04120004, 0x04020804, 0x04120804,0x04020004, 0x04120004, 0x04020804, 0x04120804,0x00020000, 0x00120000, 0x00020800, 0x00120800,0x00020000, 0x00120000, 0x00020800, 0x00120800,0x04020000, 0x04120000, 0x04020800, 0x04120800,0x04020000, 0x04120000, 0x04020800, 0x04120800,0x00020004, 0x00120004, 0x00020804, 0x00120804,0x00020004, 0x00120004, 0x00020804, 0x00120804,0x04020004, 0x04120004, 0x04020804, 0x04120804,0x04020004, 0x04120004, 0x04020804, 0x04120804,0x00020200, 0x00120200, 0x00020A00, 0x00120A00,0x00020200, 0x00120200, 0x00020A00, 0x00120A00,0x04020200, 0x04120200, 0x04020A00, 0x04120A00,0x04020200, 0x04120200, 0x04020A00, 0x04120A00,0x00020204, 0x00120204, 0x00020A04, 0x00120A04,0x00020204, 0x00120204, 0x00020A04, 0x00120A04,0x04020204, 0x04120204, 0x04020A04, 0x04120A04,0x04020204, 0x04120204, 0x04020A04, 0x04120A04,0x00020200, 0x00120200, 0x00020A00, 0x00120A00,0x00020200, 0x00120200, 0x00020A00, 0x00120A00,0x04020200, 0x04120200, 0x04020A00, 0x04120A00,0x04020200, 0x04120200, 0x04020A00, 0x04120A00,0x00020204, 0x00120204, 0x00020A04, 0x00120A04,0x00020204, 0x00120204, 0x00020A04, 0x00120A04,0x04020204, 0x04120204, 0x04020A04, 0x04120A04,0x04020204, 0x04120204, 0x04020A04, 0x04120A04);static $pc2mapd3 = array(0x00000000, 0x00010000, 0x02000000, 0x02010000,0x00000020, 0x00010020, 0x02000020, 0x02010020,0x00040000, 0x00050000, 0x02040000, 0x02050000,0x00040020, 0x00050020, 0x02040020, 0x02050020,0x00002000, 0x00012000, 0x02002000, 0x02012000,0x00002020, 0x00012020, 0x02002020, 0x02012020,0x00042000, 0x00052000, 0x02042000, 0x02052000,0x00042020, 0x00052020, 0x02042020, 0x02052020,0x00000000, 0x00010000, 0x02000000, 0x02010000,0x00000020, 0x00010020, 0x02000020, 0x02010020,0x00040000, 0x00050000, 0x02040000, 0x02050000,0x00040020, 0x00050020, 0x02040020, 0x02050020,0x00002000, 0x00012000, 0x02002000, 0x02012000,0x00002020, 0x00012020, 0x02002020, 0x02012020,0x00042000, 0x00052000, 0x02042000, 0x02052000,0x00042020, 0x00052020, 0x02042020, 0x02052020,0x00000010, 0x00010010, 0x02000010, 0x02010010,0x00000030, 0x00010030, 0x02000030, 0x02010030,0x00040010, 0x00050010, 0x02040010, 0x02050010,0x00040030, 0x00050030, 0x02040030, 0x02050030,0x00002010, 0x00012010, 0x02002010, 0x02012010,0x00002030, 0x00012030, 0x02002030, 0x02012030,0x00042010, 0x00052010, 0x02042010, 0x02052010,0x00042030, 0x00052030, 0x02042030, 0x02052030,0x00000010, 0x00010010, 0x02000010, 0x02010010,0x00000030, 0x00010030, 0x02000030, 0x02010030,0x00040010, 0x00050010, 0x02040010, 0x02050010,0x00040030, 0x00050030, 0x02040030, 0x02050030,0x00002010, 0x00012010, 0x02002010, 0x02012010,0x00002030, 0x00012030, 0x02002030, 0x02012030,0x00042010, 0x00052010, 0x02042010, 0x02052010,0x00042030, 0x00052030, 0x02042030, 0x02052030,0x20000000, 0x20010000, 0x22000000, 0x22010000,0x20000020, 0x20010020, 0x22000020, 0x22010020,0x20040000, 0x20050000, 0x22040000, 0x22050000,0x20040020, 0x20050020, 0x22040020, 0x22050020,0x20002000, 0x20012000, 0x22002000, 0x22012000,0x20002020, 0x20012020, 0x22002020, 0x22012020,0x20042000, 0x20052000, 0x22042000, 0x22052000,0x20042020, 0x20052020, 0x22042020, 0x22052020,0x20000000, 0x20010000, 0x22000000, 0x22010000,0x20000020, 0x20010020, 0x22000020, 0x22010020,0x20040000, 0x20050000, 0x22040000, 0x22050000,0x20040020, 0x20050020, 0x22040020, 0x22050020,0x20002000, 0x20012000, 0x22002000, 0x22012000,0x20002020, 0x20012020, 0x22002020, 0x22012020,0x20042000, 0x20052000, 0x22042000, 0x22052000,0x20042020, 0x20052020, 0x22042020, 0x22052020,0x20000010, 0x20010010, 0x22000010, 0x22010010,0x20000030, 0x20010030, 0x22000030, 0x22010030,0x20040010, 0x20050010, 0x22040010, 0x22050010,0x20040030, 0x20050030, 0x22040030, 0x22050030,0x20002010, 0x20012010, 0x22002010, 0x22012010,0x20002030, 0x20012030, 0x22002030, 0x22012030,0x20042010, 0x20052010, 0x22042010, 0x22052010,0x20042030, 0x20052030, 0x22042030, 0x22052030,0x20000010, 0x20010010, 0x22000010, 0x22010010,0x20000030, 0x20010030, 0x22000030, 0x22010030,0x20040010, 0x20050010, 0x22040010, 0x22050010,0x20040030, 0x20050030, 0x22040030, 0x22050030,0x20002010, 0x20012010, 0x22002010, 0x22012010,0x20002030, 0x20012030, 0x22002030, 0x22012030,0x20042010, 0x20052010, 0x22042010, 0x22052010,0x20042030, 0x20052030, 0x22042030, 0x22052030);static $pc2mapd4 = array(0x00000000, 0x00000400, 0x01000000, 0x01000400,0x00000000, 0x00000400, 0x01000000, 0x01000400,0x00000100, 0x00000500, 0x01000100, 0x01000500,0x00000100, 0x00000500, 0x01000100, 0x01000500,0x10000000, 0x10000400, 0x11000000, 0x11000400,0x10000000, 0x10000400, 0x11000000, 0x11000400,0x10000100, 0x10000500, 0x11000100, 0x11000500,0x10000100, 0x10000500, 0x11000100, 0x11000500,0x00080000, 0x00080400, 0x01080000, 0x01080400,0x00080000, 0x00080400, 0x01080000, 0x01080400,0x00080100, 0x00080500, 0x01080100, 0x01080500,0x00080100, 0x00080500, 0x01080100, 0x01080500,0x10080000, 0x10080400, 0x11080000, 0x11080400,0x10080000, 0x10080400, 0x11080000, 0x11080400,0x10080100, 0x10080500, 0x11080100, 0x11080500,0x10080100, 0x10080500, 0x11080100, 0x11080500,0x00000008, 0x00000408, 0x01000008, 0x01000408,0x00000008, 0x00000408, 0x01000008, 0x01000408,0x00000108, 0x00000508, 0x01000108, 0x01000508,0x00000108, 0x00000508, 0x01000108, 0x01000508,0x10000008, 0x10000408, 0x11000008, 0x11000408,0x10000008, 0x10000408, 0x11000008, 0x11000408,0x10000108, 0x10000508, 0x11000108, 0x11000508,0x10000108, 0x10000508, 0x11000108, 0x11000508,0x00080008, 0x00080408, 0x01080008, 0x01080408,0x00080008, 0x00080408, 0x01080008, 0x01080408,0x00080108, 0x00080508, 0x01080108, 0x01080508,0x00080108, 0x00080508, 0x01080108, 0x01080508,0x10080008, 0x10080408, 0x11080008, 0x11080408,0x10080008, 0x10080408, 0x11080008, 0x11080408,0x10080108, 0x10080508, 0x11080108, 0x11080508,0x10080108, 0x10080508, 0x11080108, 0x11080508,0x00001000, 0x00001400, 0x01001000, 0x01001400,0x00001000, 0x00001400, 0x01001000, 0x01001400,0x00001100, 0x00001500, 0x01001100, 0x01001500,0x00001100, 0x00001500, 0x01001100, 0x01001500,0x10001000, 0x10001400, 0x11001000, 0x11001400,0x10001000, 0x10001400, 0x11001000, 0x11001400,0x10001100, 0x10001500, 0x11001100, 0x11001500,0x10001100, 0x10001500, 0x11001100, 0x11001500,0x00081000, 0x00081400, 0x01081000, 0x01081400,0x00081000, 0x00081400, 0x01081000, 0x01081400,0x00081100, 0x00081500, 0x01081100, 0x01081500,0x00081100, 0x00081500, 0x01081100, 0x01081500,0x10081000, 0x10081400, 0x11081000, 0x11081400,0x10081000, 0x10081400, 0x11081000, 0x11081400,0x10081100, 0x10081500, 0x11081100, 0x11081500,0x10081100, 0x10081500, 0x11081100, 0x11081500,0x00001008, 0x00001408, 0x01001008, 0x01001408,0x00001008, 0x00001408, 0x01001008, 0x01001408,0x00001108, 0x00001508, 0x01001108, 0x01001508,0x00001108, 0x00001508, 0x01001108, 0x01001508,0x10001008, 0x10001408, 0x11001008, 0x11001408,0x10001008, 0x10001408, 0x11001008, 0x11001408,0x10001108, 0x10001508, 0x11001108, 0x11001508,0x10001108, 0x10001508, 0x11001108, 0x11001508,0x00081008, 0x00081408, 0x01081008, 0x01081408,0x00081008, 0x00081408, 0x01081008, 0x01081408,0x00081108, 0x00081508, 0x01081108, 0x01081508,0x00081108, 0x00081508, 0x01081108, 0x01081508,0x10081008, 0x10081408, 0x11081008, 0x11081408,0x10081008, 0x10081408, 0x11081008, 0x11081408,0x10081108, 0x10081508, 0x11081108, 0x11081508,0x10081108, 0x10081508, 0x11081108, 0x11081508);$keys = array();for ($des_round = 0; $des_round < $this->des_rounds; ++$des_round) {// pad the key and remove extra characters as appropriate.$key = str_pad(substr($this->key, $des_round * 8, 8), 8, "\0");// Perform the PC/1 transformation and compute C and D.$t = unpack('Nl/Nr', $key);list($l, $r) = array($t['l'], $t['r']);$key = ($this->shuffle[$pc1map[ $r & 0xFF]] & "\x80\x80\x80\x80\x80\x80\x80\x00") |($this->shuffle[$pc1map[($r >> 8) & 0xFF]] & "\x40\x40\x40\x40\x40\x40\x40\x00") |($this->shuffle[$pc1map[($r >> 16) & 0xFF]] & "\x20\x20\x20\x20\x20\x20\x20\x00") |($this->shuffle[$pc1map[($r >> 24) & 0xFF]] & "\x10\x10\x10\x10\x10\x10\x10\x00") |($this->shuffle[$pc1map[ $l & 0xFF]] & "\x08\x08\x08\x08\x08\x08\x08\x00") |($this->shuffle[$pc1map[($l >> 8) & 0xFF]] & "\x04\x04\x04\x04\x04\x04\x04\x00") |($this->shuffle[$pc1map[($l >> 16) & 0xFF]] & "\x02\x02\x02\x02\x02\x02\x02\x00") |($this->shuffle[$pc1map[($l >> 24) & 0xFF]] & "\x01\x01\x01\x01\x01\x01\x01\x00");$key = unpack('Nc/Nd', $key);$c = ( $key['c'] >> 4) & 0x0FFFFFFF;$d = (($key['d'] >> 4) & 0x0FFFFFF0) | ($key['c'] & 0x0F);$keys[$des_round] = array(self::ENCRYPT => array(),self::DECRYPT => array_fill(0, 32, 0));for ($i = 0, $ki = 31; $i < 16; ++$i, $ki-= 2) {$c <<= $shifts[$i];$c = ($c | ($c >> 28)) & 0x0FFFFFFF;$d <<= $shifts[$i];$d = ($d | ($d >> 28)) & 0x0FFFFFFF;// Perform the PC-2 transformation.$cp = $pc2mapc1[ $c >> 24 ] | $pc2mapc2[($c >> 16) & 0xFF] |$pc2mapc3[($c >> 8) & 0xFF] | $pc2mapc4[ $c & 0xFF];$dp = $pc2mapd1[ $d >> 24 ] | $pc2mapd2[($d >> 16) & 0xFF] |$pc2mapd3[($d >> 8) & 0xFF] | $pc2mapd4[ $d & 0xFF];// Reorder: odd bytes/even bytes. Push the result in key schedule.$val1 = ( $cp & 0xFF000000) | (($cp << 8) & 0x00FF0000) |(($dp >> 16) & 0x0000FF00) | (($dp >> 8) & 0x000000FF);$val2 = (($cp << 8) & 0xFF000000) | (($cp << 16) & 0x00FF0000) |(($dp >> 8) & 0x0000FF00) | ( $dp & 0x000000FF);$keys[$des_round][self::ENCRYPT][ ] = $val1;$keys[$des_round][self::DECRYPT][$ki - 1] = $val1;$keys[$des_round][self::ENCRYPT][ ] = $val2;$keys[$des_round][self::DECRYPT][$ki ] = $val2;}}switch ($this->des_rounds) {case 3: // 3DES keys$this->keys = array(self::ENCRYPT => array_merge($keys[0][self::ENCRYPT],$keys[1][self::DECRYPT],$keys[2][self::ENCRYPT]),self::DECRYPT => array_merge($keys[2][self::DECRYPT],$keys[1][self::ENCRYPT],$keys[0][self::DECRYPT]));break;// case 1: // DES keysdefault:$this->keys = array(self::ENCRYPT => $keys[0][self::ENCRYPT],self::DECRYPT => $keys[0][self::DECRYPT]);}}/*** Setup the performance-optimized function for de/encrypt()** @see \phpseclib\Crypt\Base::_setupInlineCrypt()* @access private*/function _setupInlineCrypt(){$lambda_functions =& self::_getLambdaFunctions();// Engine configuration for:// - DES ($des_rounds == 1) or// - 3DES ($des_rounds == 3)$des_rounds = $this->des_rounds;// We create max. 10 hi-optimized code for memory reason. Means: For each $key one ultra fast inline-crypt function.// (Currently, for DES, one generated $lambda_function cost on php5.5@32bit ~135kb unfreeable mem and ~230kb on php5.5@64bit)// (Currently, for TripleDES, one generated $lambda_function cost on php5.5@32bit ~240kb unfreeable mem and ~340kb on php5.5@64bit)// After that, we'll still create very fast optimized code but not the hi-ultimative code, for each $mode one$gen_hi_opt_code = (bool)( count($lambda_functions) < 10 );// Generation of a unique hash for our generated code$code_hash = "Crypt_DES, $des_rounds, {$this->mode}";if ($gen_hi_opt_code) {// For hi-optimized code, we create for each combination of// $mode, $des_rounds and $this->key its own encrypt/decrypt function.// After max 10 hi-optimized functions, we create generic// (still very fast.. but not ultra) functions for each $mode/$des_rounds// Currently 2 * 5 generic functions will be then max. possible.$code_hash = str_pad($code_hash, 32) . $this->_hashInlineCryptFunction($this->key);}// Is there a re-usable $lambda_functions in there? If not, we have to create it.if (!isset($lambda_functions[$code_hash])) {// Init code for both, encrypt and decrypt.$init_crypt = 'static $sbox1, $sbox2, $sbox3, $sbox4, $sbox5, $sbox6, $sbox7, $sbox8, $shuffleip, $shuffleinvip;if (!$sbox1) {$sbox1 = array_map("intval", $self->sbox1);$sbox2 = array_map("intval", $self->sbox2);$sbox3 = array_map("intval", $self->sbox3);$sbox4 = array_map("intval", $self->sbox4);$sbox5 = array_map("intval", $self->sbox5);$sbox6 = array_map("intval", $self->sbox6);$sbox7 = array_map("intval", $self->sbox7);$sbox8 = array_map("intval", $self->sbox8);'/* Merge $shuffle with $[inv]ipmap */ . 'for ($i = 0; $i < 256; ++$i) {$shuffleip[] = $self->shuffle[$self->ipmap[$i]];$shuffleinvip[] = $self->shuffle[$self->invipmap[$i]];}}';switch (true) {case $gen_hi_opt_code:// In Hi-optimized code mode, we use our [3]DES key schedule as hardcoded integers.// No futher initialisation of the $keys schedule is necessary.// That is the extra performance boost.$k = array(self::ENCRYPT => $this->keys[self::ENCRYPT],self::DECRYPT => $this->keys[self::DECRYPT]);$init_encrypt = '';$init_decrypt = '';break;default:// In generic optimized code mode, we have to use, as the best compromise [currently],// our key schedule as $ke/$kd arrays. (with hardcoded indexes...)$k = array(self::ENCRYPT => array(),self::DECRYPT => array());for ($i = 0, $c = count($this->keys[self::ENCRYPT]); $i < $c; ++$i) {$k[self::ENCRYPT][$i] = '$ke[' . $i . ']';$k[self::DECRYPT][$i] = '$kd[' . $i . ']';}$init_encrypt = '$ke = $self->keys[self::ENCRYPT];';$init_decrypt = '$kd = $self->keys[self::DECRYPT];';break;}// Creating code for en- and decryption.$crypt_block = array();foreach (array(self::ENCRYPT, self::DECRYPT) as $c) {/* Do the initial IP permutation. */$crypt_block[$c] = '$in = unpack("N*", $in);$l = $in[1];$r = $in[2];$in = unpack("N*",($shuffleip[ $r & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") |($shuffleip[($r >> 8) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") |($shuffleip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") |($shuffleip[($r >> 24) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") |($shuffleip[ $l & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") |($shuffleip[($l >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") |($shuffleip[($l >> 16) & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") |($shuffleip[($l >> 24) & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01"));' . /* Extract L0 and R0 */ '$l = $in[1];$r = $in[2];';$l = '$l';$r = '$r';// Perform DES or 3DES.for ($ki = -1, $des_round = 0; $des_round < $des_rounds; ++$des_round) {// Perform the 16 steps.for ($i = 0; $i < 16; ++$i) {// start of "the Feistel (F) function" - see the following URL:// http://en.wikipedia.org/wiki/Image:Data_Encryption_Standard_InfoBox_Diagram.png// Merge key schedule.$crypt_block[$c].= '$b1 = ((' . $r . ' >> 3) & 0x1FFFFFFF) ^ (' . $r . ' << 29) ^ ' . $k[$c][++$ki] . ';$b2 = ((' . $r . ' >> 31) & 0x00000001) ^ (' . $r . ' << 1) ^ ' . $k[$c][++$ki] . ';' ./* S-box indexing. */$l . ' = $sbox1[($b1 >> 24) & 0x3F] ^ $sbox2[($b2 >> 24) & 0x3F] ^$sbox3[($b1 >> 16) & 0x3F] ^ $sbox4[($b2 >> 16) & 0x3F] ^$sbox5[($b1 >> 8) & 0x3F] ^ $sbox6[($b2 >> 8) & 0x3F] ^$sbox7[ $b1 & 0x3F] ^ $sbox8[ $b2 & 0x3F] ^ ' . $l . ';';// end of "the Feistel (F) function"// swap L & Rlist($l, $r) = array($r, $l);}list($l, $r) = array($r, $l);}// Perform the inverse IP permutation.$crypt_block[$c].= '$in =($shuffleinvip[($l >> 24) & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") |($shuffleinvip[($r >> 24) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") |($shuffleinvip[($l >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") |($shuffleinvip[($r >> 16) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") |($shuffleinvip[($l >> 8) & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") |($shuffleinvip[($r >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") |($shuffleinvip[ $l & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") |($shuffleinvip[ $r & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01");';}// Creates the inline-crypt function$lambda_functions[$code_hash] = $this->_createInlineCryptFunction(array('init_crypt' => $init_crypt,'init_encrypt' => $init_encrypt,'init_decrypt' => $init_decrypt,'encrypt_block' => $crypt_block[self::ENCRYPT],'decrypt_block' => $crypt_block[self::DECRYPT]));}// Set the inline-crypt function as callback in: $this->inline_crypt$this->inline_crypt = $lambda_functions[$code_hash];}}