1<?php 2 3/** 4 * Pure-PHP implementation of DES. 5 * 6 * Uses mcrypt, if available, and an internal implementation, otherwise. 7 * 8 * PHP version 5 9 * 10 * Useful resources are as follows: 11 * 12 * - {@link http://en.wikipedia.org/wiki/DES_supplementary_material Wikipedia: DES supplementary material} 13 * - {@link http://www.itl.nist.gov/fipspubs/fip46-2.htm FIPS 46-2 - (DES), Data Encryption Standard} 14 * - {@link http://www.cs.eku.edu/faculty/styer/460/Encrypt/JS-DES.html JavaScript DES Example} 15 * 16 * Here's a short example of how to use this library: 17 * <code> 18 * <?php 19 * include 'vendor/autoload.php'; 20 * 21 * $des = new \phpseclib\Crypt\DES(); 22 * 23 * $des->setKey('abcdefgh'); 24 * 25 * $size = 10 * 1024; 26 * $plaintext = ''; 27 * for ($i = 0; $i < $size; $i++) { 28 * $plaintext.= 'a'; 29 * } 30 * 31 * echo $des->decrypt($des->encrypt($plaintext)); 32 * ?> 33 * </code> 34 * 35 * @category Crypt 36 * @package DES 37 * @author Jim Wigginton <terrafrost@php.net> 38 * @copyright 2007 Jim Wigginton 39 * @license http://www.opensource.org/licenses/mit-license.html MIT License 40 * @link http://phpseclib.sourceforge.net 41 */ 42 43namespace phpseclib\Crypt; 44 45/** 46 * Pure-PHP implementation of DES. 47 * 48 * @package DES 49 * @author Jim Wigginton <terrafrost@php.net> 50 * @access public 51 */ 52class DES extends Base 53{ 54 /**#@+ 55 * @access private 56 * @see \phpseclib\Crypt\DES::_setupKey() 57 * @see \phpseclib\Crypt\DES::_processBlock() 58 */ 59 /** 60 * Contains $keys[self::ENCRYPT] 61 */ 62 const ENCRYPT = 0; 63 /** 64 * Contains $keys[self::DECRYPT] 65 */ 66 const DECRYPT = 1; 67 /**#@-*/ 68 69 /** 70 * Block Length of the cipher 71 * 72 * @see \phpseclib\Crypt\Base::block_size 73 * @var int 74 * @access private 75 */ 76 var $block_size = 8; 77 78 /** 79 * Key Length (in bytes) 80 * 81 * @see \phpseclib\Crypt\Base::setKeyLength() 82 * @var int 83 * @access private 84 */ 85 var $key_length = 8; 86 87 /** 88 * The mcrypt specific name of the cipher 89 * 90 * @see \phpseclib\Crypt\Base::cipher_name_mcrypt 91 * @var string 92 * @access private 93 */ 94 var $cipher_name_mcrypt = 'des'; 95 96 /** 97 * The OpenSSL names of the cipher / modes 98 * 99 * @see \phpseclib\Crypt\Base::openssl_mode_names 100 * @var array 101 * @access private 102 */ 103 var $openssl_mode_names = array( 104 self::MODE_ECB => 'des-ecb', 105 self::MODE_CBC => 'des-cbc', 106 self::MODE_CFB => 'des-cfb', 107 self::MODE_OFB => 'des-ofb' 108 // self::MODE_CTR is undefined for DES 109 ); 110 111 /** 112 * Optimizing value while CFB-encrypting 113 * 114 * @see \phpseclib\Crypt\Base::cfb_init_len 115 * @var int 116 * @access private 117 */ 118 var $cfb_init_len = 500; 119 120 /** 121 * Switch for DES/3DES encryption 122 * 123 * Used only if $engine == self::ENGINE_INTERNAL 124 * 125 * @see self::_setupKey() 126 * @see self::_processBlock() 127 * @var int 128 * @access private 129 */ 130 var $des_rounds = 1; 131 132 /** 133 * max possible size of $key 134 * 135 * @see self::setKey() 136 * @var string 137 * @access private 138 */ 139 var $key_length_max = 8; 140 141 /** 142 * The Key Schedule 143 * 144 * @see self::_setupKey() 145 * @var array 146 * @access private 147 */ 148 var $keys; 149 150 /** 151 * Shuffle table. 152 * 153 * For each byte value index, the entry holds an 8-byte string 154 * with each byte containing all bits in the same state as the 155 * corresponding bit in the index value. 156 * 157 * @see self::_processBlock() 158 * @see self::_setupKey() 159 * @var array 160 * @access private 161 */ 162 var $shuffle = array( 163 "\x00\x00\x00\x00\x00\x00\x00\x00", "\x00\x00\x00\x00\x00\x00\x00\xFF", 164 "\x00\x00\x00\x00\x00\x00\xFF\x00", "\x00\x00\x00\x00\x00\x00\xFF\xFF", 165 "\x00\x00\x00\x00\x00\xFF\x00\x00", "\x00\x00\x00\x00\x00\xFF\x00\xFF", 166 "\x00\x00\x00\x00\x00\xFF\xFF\x00", "\x00\x00\x00\x00\x00\xFF\xFF\xFF", 167 "\x00\x00\x00\x00\xFF\x00\x00\x00", "\x00\x00\x00\x00\xFF\x00\x00\xFF", 168 "\x00\x00\x00\x00\xFF\x00\xFF\x00", "\x00\x00\x00\x00\xFF\x00\xFF\xFF", 169 "\x00\x00\x00\x00\xFF\xFF\x00\x00", "\x00\x00\x00\x00\xFF\xFF\x00\xFF", 170 "\x00\x00\x00\x00\xFF\xFF\xFF\x00", "\x00\x00\x00\x00\xFF\xFF\xFF\xFF", 171 "\x00\x00\x00\xFF\x00\x00\x00\x00", "\x00\x00\x00\xFF\x00\x00\x00\xFF", 172 "\x00\x00\x00\xFF\x00\x00\xFF\x00", "\x00\x00\x00\xFF\x00\x00\xFF\xFF", 173 "\x00\x00\x00\xFF\x00\xFF\x00\x00", "\x00\x00\x00\xFF\x00\xFF\x00\xFF", 174 "\x00\x00\x00\xFF\x00\xFF\xFF\x00", "\x00\x00\x00\xFF\x00\xFF\xFF\xFF", 175 "\x00\x00\x00\xFF\xFF\x00\x00\x00", "\x00\x00\x00\xFF\xFF\x00\x00\xFF", 176 "\x00\x00\x00\xFF\xFF\x00\xFF\x00", "\x00\x00\x00\xFF\xFF\x00\xFF\xFF", 177 "\x00\x00\x00\xFF\xFF\xFF\x00\x00", "\x00\x00\x00\xFF\xFF\xFF\x00\xFF", 178 "\x00\x00\x00\xFF\xFF\xFF\xFF\x00", "\x00\x00\x00\xFF\xFF\xFF\xFF\xFF", 179 "\x00\x00\xFF\x00\x00\x00\x00\x00", "\x00\x00\xFF\x00\x00\x00\x00\xFF", 180 "\x00\x00\xFF\x00\x00\x00\xFF\x00", "\x00\x00\xFF\x00\x00\x00\xFF\xFF", 181 "\x00\x00\xFF\x00\x00\xFF\x00\x00", "\x00\x00\xFF\x00\x00\xFF\x00\xFF", 182 "\x00\x00\xFF\x00\x00\xFF\xFF\x00", "\x00\x00\xFF\x00\x00\xFF\xFF\xFF", 183 "\x00\x00\xFF\x00\xFF\x00\x00\x00", "\x00\x00\xFF\x00\xFF\x00\x00\xFF", 184 "\x00\x00\xFF\x00\xFF\x00\xFF\x00", "\x00\x00\xFF\x00\xFF\x00\xFF\xFF", 185 "\x00\x00\xFF\x00\xFF\xFF\x00\x00", "\x00\x00\xFF\x00\xFF\xFF\x00\xFF", 186 "\x00\x00\xFF\x00\xFF\xFF\xFF\x00", "\x00\x00\xFF\x00\xFF\xFF\xFF\xFF", 187 "\x00\x00\xFF\xFF\x00\x00\x00\x00", "\x00\x00\xFF\xFF\x00\x00\x00\xFF", 188 "\x00\x00\xFF\xFF\x00\x00\xFF\x00", "\x00\x00\xFF\xFF\x00\x00\xFF\xFF", 189 "\x00\x00\xFF\xFF\x00\xFF\x00\x00", "\x00\x00\xFF\xFF\x00\xFF\x00\xFF", 190 "\x00\x00\xFF\xFF\x00\xFF\xFF\x00", "\x00\x00\xFF\xFF\x00\xFF\xFF\xFF", 191 "\x00\x00\xFF\xFF\xFF\x00\x00\x00", "\x00\x00\xFF\xFF\xFF\x00\x00\xFF", 192 "\x00\x00\xFF\xFF\xFF\x00\xFF\x00", "\x00\x00\xFF\xFF\xFF\x00\xFF\xFF", 193 "\x00\x00\xFF\xFF\xFF\xFF\x00\x00", "\x00\x00\xFF\xFF\xFF\xFF\x00\xFF", 194 "\x00\x00\xFF\xFF\xFF\xFF\xFF\x00", "\x00\x00\xFF\xFF\xFF\xFF\xFF\xFF", 195 "\x00\xFF\x00\x00\x00\x00\x00\x00", "\x00\xFF\x00\x00\x00\x00\x00\xFF", 196 "\x00\xFF\x00\x00\x00\x00\xFF\x00", "\x00\xFF\x00\x00\x00\x00\xFF\xFF", 197 "\x00\xFF\x00\x00\x00\xFF\x00\x00", "\x00\xFF\x00\x00\x00\xFF\x00\xFF", 198 "\x00\xFF\x00\x00\x00\xFF\xFF\x00", "\x00\xFF\x00\x00\x00\xFF\xFF\xFF", 199 "\x00\xFF\x00\x00\xFF\x00\x00\x00", "\x00\xFF\x00\x00\xFF\x00\x00\xFF", 200 "\x00\xFF\x00\x00\xFF\x00\xFF\x00", "\x00\xFF\x00\x00\xFF\x00\xFF\xFF", 201 "\x00\xFF\x00\x00\xFF\xFF\x00\x00", "\x00\xFF\x00\x00\xFF\xFF\x00\xFF", 202 "\x00\xFF\x00\x00\xFF\xFF\xFF\x00", "\x00\xFF\x00\x00\xFF\xFF\xFF\xFF", 203 "\x00\xFF\x00\xFF\x00\x00\x00\x00", "\x00\xFF\x00\xFF\x00\x00\x00\xFF", 204 "\x00\xFF\x00\xFF\x00\x00\xFF\x00", "\x00\xFF\x00\xFF\x00\x00\xFF\xFF", 205 "\x00\xFF\x00\xFF\x00\xFF\x00\x00", "\x00\xFF\x00\xFF\x00\xFF\x00\xFF", 206 "\x00\xFF\x00\xFF\x00\xFF\xFF\x00", "\x00\xFF\x00\xFF\x00\xFF\xFF\xFF", 207 "\x00\xFF\x00\xFF\xFF\x00\x00\x00", "\x00\xFF\x00\xFF\xFF\x00\x00\xFF", 208 "\x00\xFF\x00\xFF\xFF\x00\xFF\x00", "\x00\xFF\x00\xFF\xFF\x00\xFF\xFF", 209 "\x00\xFF\x00\xFF\xFF\xFF\x00\x00", "\x00\xFF\x00\xFF\xFF\xFF\x00\xFF", 210 "\x00\xFF\x00\xFF\xFF\xFF\xFF\x00", "\x00\xFF\x00\xFF\xFF\xFF\xFF\xFF", 211 "\x00\xFF\xFF\x00\x00\x00\x00\x00", "\x00\xFF\xFF\x00\x00\x00\x00\xFF", 212 "\x00\xFF\xFF\x00\x00\x00\xFF\x00", "\x00\xFF\xFF\x00\x00\x00\xFF\xFF", 213 "\x00\xFF\xFF\x00\x00\xFF\x00\x00", "\x00\xFF\xFF\x00\x00\xFF\x00\xFF", 214 "\x00\xFF\xFF\x00\x00\xFF\xFF\x00", "\x00\xFF\xFF\x00\x00\xFF\xFF\xFF", 215 "\x00\xFF\xFF\x00\xFF\x00\x00\x00", "\x00\xFF\xFF\x00\xFF\x00\x00\xFF", 216 "\x00\xFF\xFF\x00\xFF\x00\xFF\x00", "\x00\xFF\xFF\x00\xFF\x00\xFF\xFF", 217 "\x00\xFF\xFF\x00\xFF\xFF\x00\x00", "\x00\xFF\xFF\x00\xFF\xFF\x00\xFF", 218 "\x00\xFF\xFF\x00\xFF\xFF\xFF\x00", "\x00\xFF\xFF\x00\xFF\xFF\xFF\xFF", 219 "\x00\xFF\xFF\xFF\x00\x00\x00\x00", "\x00\xFF\xFF\xFF\x00\x00\x00\xFF", 220 "\x00\xFF\xFF\xFF\x00\x00\xFF\x00", "\x00\xFF\xFF\xFF\x00\x00\xFF\xFF", 221 "\x00\xFF\xFF\xFF\x00\xFF\x00\x00", "\x00\xFF\xFF\xFF\x00\xFF\x00\xFF", 222 "\x00\xFF\xFF\xFF\x00\xFF\xFF\x00", "\x00\xFF\xFF\xFF\x00\xFF\xFF\xFF", 223 "\x00\xFF\xFF\xFF\xFF\x00\x00\x00", "\x00\xFF\xFF\xFF\xFF\x00\x00\xFF", 224 "\x00\xFF\xFF\xFF\xFF\x00\xFF\x00", "\x00\xFF\xFF\xFF\xFF\x00\xFF\xFF", 225 "\x00\xFF\xFF\xFF\xFF\xFF\x00\x00", "\x00\xFF\xFF\xFF\xFF\xFF\x00\xFF", 226 "\x00\xFF\xFF\xFF\xFF\xFF\xFF\x00", "\x00\xFF\xFF\xFF\xFF\xFF\xFF\xFF", 227 "\xFF\x00\x00\x00\x00\x00\x00\x00", "\xFF\x00\x00\x00\x00\x00\x00\xFF", 228 "\xFF\x00\x00\x00\x00\x00\xFF\x00", "\xFF\x00\x00\x00\x00\x00\xFF\xFF", 229 "\xFF\x00\x00\x00\x00\xFF\x00\x00", "\xFF\x00\x00\x00\x00\xFF\x00\xFF", 230 "\xFF\x00\x00\x00\x00\xFF\xFF\x00", "\xFF\x00\x00\x00\x00\xFF\xFF\xFF", 231 "\xFF\x00\x00\x00\xFF\x00\x00\x00", "\xFF\x00\x00\x00\xFF\x00\x00\xFF", 232 "\xFF\x00\x00\x00\xFF\x00\xFF\x00", "\xFF\x00\x00\x00\xFF\x00\xFF\xFF", 233 "\xFF\x00\x00\x00\xFF\xFF\x00\x00", "\xFF\x00\x00\x00\xFF\xFF\x00\xFF", 234 "\xFF\x00\x00\x00\xFF\xFF\xFF\x00", "\xFF\x00\x00\x00\xFF\xFF\xFF\xFF", 235 "\xFF\x00\x00\xFF\x00\x00\x00\x00", "\xFF\x00\x00\xFF\x00\x00\x00\xFF", 236 "\xFF\x00\x00\xFF\x00\x00\xFF\x00", "\xFF\x00\x00\xFF\x00\x00\xFF\xFF", 237 "\xFF\x00\x00\xFF\x00\xFF\x00\x00", "\xFF\x00\x00\xFF\x00\xFF\x00\xFF", 238 "\xFF\x00\x00\xFF\x00\xFF\xFF\x00", "\xFF\x00\x00\xFF\x00\xFF\xFF\xFF", 239 "\xFF\x00\x00\xFF\xFF\x00\x00\x00", "\xFF\x00\x00\xFF\xFF\x00\x00\xFF", 240 "\xFF\x00\x00\xFF\xFF\x00\xFF\x00", "\xFF\x00\x00\xFF\xFF\x00\xFF\xFF", 241 "\xFF\x00\x00\xFF\xFF\xFF\x00\x00", "\xFF\x00\x00\xFF\xFF\xFF\x00\xFF", 242 "\xFF\x00\x00\xFF\xFF\xFF\xFF\x00", "\xFF\x00\x00\xFF\xFF\xFF\xFF\xFF", 243 "\xFF\x00\xFF\x00\x00\x00\x00\x00", "\xFF\x00\xFF\x00\x00\x00\x00\xFF", 244 "\xFF\x00\xFF\x00\x00\x00\xFF\x00", "\xFF\x00\xFF\x00\x00\x00\xFF\xFF", 245 "\xFF\x00\xFF\x00\x00\xFF\x00\x00", "\xFF\x00\xFF\x00\x00\xFF\x00\xFF", 246 "\xFF\x00\xFF\x00\x00\xFF\xFF\x00", "\xFF\x00\xFF\x00\x00\xFF\xFF\xFF", 247 "\xFF\x00\xFF\x00\xFF\x00\x00\x00", "\xFF\x00\xFF\x00\xFF\x00\x00\xFF", 248 "\xFF\x00\xFF\x00\xFF\x00\xFF\x00", "\xFF\x00\xFF\x00\xFF\x00\xFF\xFF", 249 "\xFF\x00\xFF\x00\xFF\xFF\x00\x00", "\xFF\x00\xFF\x00\xFF\xFF\x00\xFF", 250 "\xFF\x00\xFF\x00\xFF\xFF\xFF\x00", "\xFF\x00\xFF\x00\xFF\xFF\xFF\xFF", 251 "\xFF\x00\xFF\xFF\x00\x00\x00\x00", "\xFF\x00\xFF\xFF\x00\x00\x00\xFF", 252 "\xFF\x00\xFF\xFF\x00\x00\xFF\x00", "\xFF\x00\xFF\xFF\x00\x00\xFF\xFF", 253 "\xFF\x00\xFF\xFF\x00\xFF\x00\x00", "\xFF\x00\xFF\xFF\x00\xFF\x00\xFF", 254 "\xFF\x00\xFF\xFF\x00\xFF\xFF\x00", "\xFF\x00\xFF\xFF\x00\xFF\xFF\xFF", 255 "\xFF\x00\xFF\xFF\xFF\x00\x00\x00", "\xFF\x00\xFF\xFF\xFF\x00\x00\xFF", 256 "\xFF\x00\xFF\xFF\xFF\x00\xFF\x00", "\xFF\x00\xFF\xFF\xFF\x00\xFF\xFF", 257 "\xFF\x00\xFF\xFF\xFF\xFF\x00\x00", "\xFF\x00\xFF\xFF\xFF\xFF\x00\xFF", 258 "\xFF\x00\xFF\xFF\xFF\xFF\xFF\x00", "\xFF\x00\xFF\xFF\xFF\xFF\xFF\xFF", 259 "\xFF\xFF\x00\x00\x00\x00\x00\x00", "\xFF\xFF\x00\x00\x00\x00\x00\xFF", 260 "\xFF\xFF\x00\x00\x00\x00\xFF\x00", "\xFF\xFF\x00\x00\x00\x00\xFF\xFF", 261 "\xFF\xFF\x00\x00\x00\xFF\x00\x00", "\xFF\xFF\x00\x00\x00\xFF\x00\xFF", 262 "\xFF\xFF\x00\x00\x00\xFF\xFF\x00", "\xFF\xFF\x00\x00\x00\xFF\xFF\xFF", 263 "\xFF\xFF\x00\x00\xFF\x00\x00\x00", "\xFF\xFF\x00\x00\xFF\x00\x00\xFF", 264 "\xFF\xFF\x00\x00\xFF\x00\xFF\x00", "\xFF\xFF\x00\x00\xFF\x00\xFF\xFF", 265 "\xFF\xFF\x00\x00\xFF\xFF\x00\x00", "\xFF\xFF\x00\x00\xFF\xFF\x00\xFF", 266 "\xFF\xFF\x00\x00\xFF\xFF\xFF\x00", "\xFF\xFF\x00\x00\xFF\xFF\xFF\xFF", 267 "\xFF\xFF\x00\xFF\x00\x00\x00\x00", "\xFF\xFF\x00\xFF\x00\x00\x00\xFF", 268 "\xFF\xFF\x00\xFF\x00\x00\xFF\x00", "\xFF\xFF\x00\xFF\x00\x00\xFF\xFF", 269 "\xFF\xFF\x00\xFF\x00\xFF\x00\x00", "\xFF\xFF\x00\xFF\x00\xFF\x00\xFF", 270 "\xFF\xFF\x00\xFF\x00\xFF\xFF\x00", "\xFF\xFF\x00\xFF\x00\xFF\xFF\xFF", 271 "\xFF\xFF\x00\xFF\xFF\x00\x00\x00", "\xFF\xFF\x00\xFF\xFF\x00\x00\xFF", 272 "\xFF\xFF\x00\xFF\xFF\x00\xFF\x00", "\xFF\xFF\x00\xFF\xFF\x00\xFF\xFF", 273 "\xFF\xFF\x00\xFF\xFF\xFF\x00\x00", "\xFF\xFF\x00\xFF\xFF\xFF\x00\xFF", 274 "\xFF\xFF\x00\xFF\xFF\xFF\xFF\x00", "\xFF\xFF\x00\xFF\xFF\xFF\xFF\xFF", 275 "\xFF\xFF\xFF\x00\x00\x00\x00\x00", "\xFF\xFF\xFF\x00\x00\x00\x00\xFF", 276 "\xFF\xFF\xFF\x00\x00\x00\xFF\x00", "\xFF\xFF\xFF\x00\x00\x00\xFF\xFF", 277 "\xFF\xFF\xFF\x00\x00\xFF\x00\x00", "\xFF\xFF\xFF\x00\x00\xFF\x00\xFF", 278 "\xFF\xFF\xFF\x00\x00\xFF\xFF\x00", "\xFF\xFF\xFF\x00\x00\xFF\xFF\xFF", 279 "\xFF\xFF\xFF\x00\xFF\x00\x00\x00", "\xFF\xFF\xFF\x00\xFF\x00\x00\xFF", 280 "\xFF\xFF\xFF\x00\xFF\x00\xFF\x00", "\xFF\xFF\xFF\x00\xFF\x00\xFF\xFF", 281 "\xFF\xFF\xFF\x00\xFF\xFF\x00\x00", "\xFF\xFF\xFF\x00\xFF\xFF\x00\xFF", 282 "\xFF\xFF\xFF\x00\xFF\xFF\xFF\x00", "\xFF\xFF\xFF\x00\xFF\xFF\xFF\xFF", 283 "\xFF\xFF\xFF\xFF\x00\x00\x00\x00", "\xFF\xFF\xFF\xFF\x00\x00\x00\xFF", 284 "\xFF\xFF\xFF\xFF\x00\x00\xFF\x00", "\xFF\xFF\xFF\xFF\x00\x00\xFF\xFF", 285 "\xFF\xFF\xFF\xFF\x00\xFF\x00\x00", "\xFF\xFF\xFF\xFF\x00\xFF\x00\xFF", 286 "\xFF\xFF\xFF\xFF\x00\xFF\xFF\x00", "\xFF\xFF\xFF\xFF\x00\xFF\xFF\xFF", 287 "\xFF\xFF\xFF\xFF\xFF\x00\x00\x00", "\xFF\xFF\xFF\xFF\xFF\x00\x00\xFF", 288 "\xFF\xFF\xFF\xFF\xFF\x00\xFF\x00", "\xFF\xFF\xFF\xFF\xFF\x00\xFF\xFF", 289 "\xFF\xFF\xFF\xFF\xFF\xFF\x00\x00", "\xFF\xFF\xFF\xFF\xFF\xFF\x00\xFF", 290 "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x00", "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF" 291 ); 292 293 /** 294 * IP mapping helper table. 295 * 296 * Indexing this table with each source byte performs the initial bit permutation. 297 * 298 * @var array 299 * @access private 300 */ 301 var $ipmap = array( 302 0x00, 0x10, 0x01, 0x11, 0x20, 0x30, 0x21, 0x31, 303 0x02, 0x12, 0x03, 0x13, 0x22, 0x32, 0x23, 0x33, 304 0x40, 0x50, 0x41, 0x51, 0x60, 0x70, 0x61, 0x71, 305 0x42, 0x52, 0x43, 0x53, 0x62, 0x72, 0x63, 0x73, 306 0x04, 0x14, 0x05, 0x15, 0x24, 0x34, 0x25, 0x35, 307 0x06, 0x16, 0x07, 0x17, 0x26, 0x36, 0x27, 0x37, 308 0x44, 0x54, 0x45, 0x55, 0x64, 0x74, 0x65, 0x75, 309 0x46, 0x56, 0x47, 0x57, 0x66, 0x76, 0x67, 0x77, 310 0x80, 0x90, 0x81, 0x91, 0xA0, 0xB0, 0xA1, 0xB1, 311 0x82, 0x92, 0x83, 0x93, 0xA2, 0xB2, 0xA3, 0xB3, 312 0xC0, 0xD0, 0xC1, 0xD1, 0xE0, 0xF0, 0xE1, 0xF1, 313 0xC2, 0xD2, 0xC3, 0xD3, 0xE2, 0xF2, 0xE3, 0xF3, 314 0x84, 0x94, 0x85, 0x95, 0xA4, 0xB4, 0xA5, 0xB5, 315 0x86, 0x96, 0x87, 0x97, 0xA6, 0xB6, 0xA7, 0xB7, 316 0xC4, 0xD4, 0xC5, 0xD5, 0xE4, 0xF4, 0xE5, 0xF5, 317 0xC6, 0xD6, 0xC7, 0xD7, 0xE6, 0xF6, 0xE7, 0xF7, 318 0x08, 0x18, 0x09, 0x19, 0x28, 0x38, 0x29, 0x39, 319 0x0A, 0x1A, 0x0B, 0x1B, 0x2A, 0x3A, 0x2B, 0x3B, 320 0x48, 0x58, 0x49, 0x59, 0x68, 0x78, 0x69, 0x79, 321 0x4A, 0x5A, 0x4B, 0x5B, 0x6A, 0x7A, 0x6B, 0x7B, 322 0x0C, 0x1C, 0x0D, 0x1D, 0x2C, 0x3C, 0x2D, 0x3D, 323 0x0E, 0x1E, 0x0F, 0x1F, 0x2E, 0x3E, 0x2F, 0x3F, 324 0x4C, 0x5C, 0x4D, 0x5D, 0x6C, 0x7C, 0x6D, 0x7D, 325 0x4E, 0x5E, 0x4F, 0x5F, 0x6E, 0x7E, 0x6F, 0x7F, 326 0x88, 0x98, 0x89, 0x99, 0xA8, 0xB8, 0xA9, 0xB9, 327 0x8A, 0x9A, 0x8B, 0x9B, 0xAA, 0xBA, 0xAB, 0xBB, 328 0xC8, 0xD8, 0xC9, 0xD9, 0xE8, 0xF8, 0xE9, 0xF9, 329 0xCA, 0xDA, 0xCB, 0xDB, 0xEA, 0xFA, 0xEB, 0xFB, 330 0x8C, 0x9C, 0x8D, 0x9D, 0xAC, 0xBC, 0xAD, 0xBD, 331 0x8E, 0x9E, 0x8F, 0x9F, 0xAE, 0xBE, 0xAF, 0xBF, 332 0xCC, 0xDC, 0xCD, 0xDD, 0xEC, 0xFC, 0xED, 0xFD, 333 0xCE, 0xDE, 0xCF, 0xDF, 0xEE, 0xFE, 0xEF, 0xFF 334 ); 335 336 /** 337 * Inverse IP mapping helper table. 338 * Indexing this table with a byte value reverses the bit order. 339 * 340 * @var array 341 * @access private 342 */ 343 var $invipmap = array( 344 0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0, 345 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0, 346 0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8, 347 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8, 348 0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4, 349 0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4, 350 0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC, 351 0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC, 352 0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2, 353 0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2, 354 0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA, 355 0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA, 356 0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6, 357 0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6, 358 0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE, 359 0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE, 360 0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1, 361 0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1, 362 0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9, 363 0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9, 364 0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5, 365 0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5, 366 0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED, 367 0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD, 368 0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3, 369 0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3, 370 0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB, 371 0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB, 372 0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7, 373 0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7, 374 0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF, 375 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF 376 ); 377 378 /** 379 * Pre-permuted S-box1 380 * 381 * Each box ($sbox1-$sbox8) has been vectorized, then each value pre-permuted using the 382 * P table: concatenation can then be replaced by exclusive ORs. 383 * 384 * @var array 385 * @access private 386 */ 387 var $sbox1 = array( 388 0x00808200, 0x00000000, 0x00008000, 0x00808202, 389 0x00808002, 0x00008202, 0x00000002, 0x00008000, 390 0x00000200, 0x00808200, 0x00808202, 0x00000200, 391 0x00800202, 0x00808002, 0x00800000, 0x00000002, 392 0x00000202, 0x00800200, 0x00800200, 0x00008200, 393 0x00008200, 0x00808000, 0x00808000, 0x00800202, 394 0x00008002, 0x00800002, 0x00800002, 0x00008002, 395 0x00000000, 0x00000202, 0x00008202, 0x00800000, 396 0x00008000, 0x00808202, 0x00000002, 0x00808000, 397 0x00808200, 0x00800000, 0x00800000, 0x00000200, 398 0x00808002, 0x00008000, 0x00008200, 0x00800002, 399 0x00000200, 0x00000002, 0x00800202, 0x00008202, 400 0x00808202, 0x00008002, 0x00808000, 0x00800202, 401 0x00800002, 0x00000202, 0x00008202, 0x00808200, 402 0x00000202, 0x00800200, 0x00800200, 0x00000000, 403 0x00008002, 0x00008200, 0x00000000, 0x00808002 404 ); 405 406 /** 407 * Pre-permuted S-box2 408 * 409 * @var array 410 * @access private 411 */ 412 var $sbox2 = array( 413 0x40084010, 0x40004000, 0x00004000, 0x00084010, 414 0x00080000, 0x00000010, 0x40080010, 0x40004010, 415 0x40000010, 0x40084010, 0x40084000, 0x40000000, 416 0x40004000, 0x00080000, 0x00000010, 0x40080010, 417 0x00084000, 0x00080010, 0x40004010, 0x00000000, 418 0x40000000, 0x00004000, 0x00084010, 0x40080000, 419 0x00080010, 0x40000010, 0x00000000, 0x00084000, 420 0x00004010, 0x40084000, 0x40080000, 0x00004010, 421 0x00000000, 0x00084010, 0x40080010, 0x00080000, 422 0x40004010, 0x40080000, 0x40084000, 0x00004000, 423 0x40080000, 0x40004000, 0x00000010, 0x40084010, 424 0x00084010, 0x00000010, 0x00004000, 0x40000000, 425 0x00004010, 0x40084000, 0x00080000, 0x40000010, 426 0x00080010, 0x40004010, 0x40000010, 0x00080010, 427 0x00084000, 0x00000000, 0x40004000, 0x00004010, 428 0x40000000, 0x40080010, 0x40084010, 0x00084000 429 ); 430 431 /** 432 * Pre-permuted S-box3 433 * 434 * @var array 435 * @access private 436 */ 437 var $sbox3 = array( 438 0x00000104, 0x04010100, 0x00000000, 0x04010004, 439 0x04000100, 0x00000000, 0x00010104, 0x04000100, 440 0x00010004, 0x04000004, 0x04000004, 0x00010000, 441 0x04010104, 0x00010004, 0x04010000, 0x00000104, 442 0x04000000, 0x00000004, 0x04010100, 0x00000100, 443 0x00010100, 0x04010000, 0x04010004, 0x00010104, 444 0x04000104, 0x00010100, 0x00010000, 0x04000104, 445 0x00000004, 0x04010104, 0x00000100, 0x04000000, 446 0x04010100, 0x04000000, 0x00010004, 0x00000104, 447 0x00010000, 0x04010100, 0x04000100, 0x00000000, 448 0x00000100, 0x00010004, 0x04010104, 0x04000100, 449 0x04000004, 0x00000100, 0x00000000, 0x04010004, 450 0x04000104, 0x00010000, 0x04000000, 0x04010104, 451 0x00000004, 0x00010104, 0x00010100, 0x04000004, 452 0x04010000, 0x04000104, 0x00000104, 0x04010000, 453 0x00010104, 0x00000004, 0x04010004, 0x00010100 454 ); 455 456 /** 457 * Pre-permuted S-box4 458 * 459 * @var array 460 * @access private 461 */ 462 var $sbox4 = array( 463 0x80401000, 0x80001040, 0x80001040, 0x00000040, 464 0x00401040, 0x80400040, 0x80400000, 0x80001000, 465 0x00000000, 0x00401000, 0x00401000, 0x80401040, 466 0x80000040, 0x00000000, 0x00400040, 0x80400000, 467 0x80000000, 0x00001000, 0x00400000, 0x80401000, 468 0x00000040, 0x00400000, 0x80001000, 0x00001040, 469 0x80400040, 0x80000000, 0x00001040, 0x00400040, 470 0x00001000, 0x00401040, 0x80401040, 0x80000040, 471 0x00400040, 0x80400000, 0x00401000, 0x80401040, 472 0x80000040, 0x00000000, 0x00000000, 0x00401000, 473 0x00001040, 0x00400040, 0x80400040, 0x80000000, 474 0x80401000, 0x80001040, 0x80001040, 0x00000040, 475 0x80401040, 0x80000040, 0x80000000, 0x00001000, 476 0x80400000, 0x80001000, 0x00401040, 0x80400040, 477 0x80001000, 0x00001040, 0x00400000, 0x80401000, 478 0x00000040, 0x00400000, 0x00001000, 0x00401040 479 ); 480 481 /** 482 * Pre-permuted S-box5 483 * 484 * @var array 485 * @access private 486 */ 487 var $sbox5 = array( 488 0x00000080, 0x01040080, 0x01040000, 0x21000080, 489 0x00040000, 0x00000080, 0x20000000, 0x01040000, 490 0x20040080, 0x00040000, 0x01000080, 0x20040080, 491 0x21000080, 0x21040000, 0x00040080, 0x20000000, 492 0x01000000, 0x20040000, 0x20040000, 0x00000000, 493 0x20000080, 0x21040080, 0x21040080, 0x01000080, 494 0x21040000, 0x20000080, 0x00000000, 0x21000000, 495 0x01040080, 0x01000000, 0x21000000, 0x00040080, 496 0x00040000, 0x21000080, 0x00000080, 0x01000000, 497 0x20000000, 0x01040000, 0x21000080, 0x20040080, 498 0x01000080, 0x20000000, 0x21040000, 0x01040080, 499 0x20040080, 0x00000080, 0x01000000, 0x21040000, 500 0x21040080, 0x00040080, 0x21000000, 0x21040080, 501 0x01040000, 0x00000000, 0x20040000, 0x21000000, 502 0x00040080, 0x01000080, 0x20000080, 0x00040000, 503 0x00000000, 0x20040000, 0x01040080, 0x20000080 504 ); 505 506 /** 507 * Pre-permuted S-box6 508 * 509 * @var array 510 * @access private 511 */ 512 var $sbox6 = array( 513 0x10000008, 0x10200000, 0x00002000, 0x10202008, 514 0x10200000, 0x00000008, 0x10202008, 0x00200000, 515 0x10002000, 0x00202008, 0x00200000, 0x10000008, 516 0x00200008, 0x10002000, 0x10000000, 0x00002008, 517 0x00000000, 0x00200008, 0x10002008, 0x00002000, 518 0x00202000, 0x10002008, 0x00000008, 0x10200008, 519 0x10200008, 0x00000000, 0x00202008, 0x10202000, 520 0x00002008, 0x00202000, 0x10202000, 0x10000000, 521 0x10002000, 0x00000008, 0x10200008, 0x00202000, 522 0x10202008, 0x00200000, 0x00002008, 0x10000008, 523 0x00200000, 0x10002000, 0x10000000, 0x00002008, 524 0x10000008, 0x10202008, 0x00202000, 0x10200000, 525 0x00202008, 0x10202000, 0x00000000, 0x10200008, 526 0x00000008, 0x00002000, 0x10200000, 0x00202008, 527 0x00002000, 0x00200008, 0x10002008, 0x00000000, 528 0x10202000, 0x10000000, 0x00200008, 0x10002008 529 ); 530 531 /** 532 * Pre-permuted S-box7 533 * 534 * @var array 535 * @access private 536 */ 537 var $sbox7 = array( 538 0x00100000, 0x02100001, 0x02000401, 0x00000000, 539 0x00000400, 0x02000401, 0x00100401, 0x02100400, 540 0x02100401, 0x00100000, 0x00000000, 0x02000001, 541 0x00000001, 0x02000000, 0x02100001, 0x00000401, 542 0x02000400, 0x00100401, 0x00100001, 0x02000400, 543 0x02000001, 0x02100000, 0x02100400, 0x00100001, 544 0x02100000, 0x00000400, 0x00000401, 0x02100401, 545 0x00100400, 0x00000001, 0x02000000, 0x00100400, 546 0x02000000, 0x00100400, 0x00100000, 0x02000401, 547 0x02000401, 0x02100001, 0x02100001, 0x00000001, 548 0x00100001, 0x02000000, 0x02000400, 0x00100000, 549 0x02100400, 0x00000401, 0x00100401, 0x02100400, 550 0x00000401, 0x02000001, 0x02100401, 0x02100000, 551 0x00100400, 0x00000000, 0x00000001, 0x02100401, 552 0x00000000, 0x00100401, 0x02100000, 0x00000400, 553 0x02000001, 0x02000400, 0x00000400, 0x00100001 554 ); 555 556 /** 557 * Pre-permuted S-box8 558 * 559 * @var array 560 * @access private 561 */ 562 var $sbox8 = array( 563 0x08000820, 0x00000800, 0x00020000, 0x08020820, 564 0x08000000, 0x08000820, 0x00000020, 0x08000000, 565 0x00020020, 0x08020000, 0x08020820, 0x00020800, 566 0x08020800, 0x00020820, 0x00000800, 0x00000020, 567 0x08020000, 0x08000020, 0x08000800, 0x00000820, 568 0x00020800, 0x00020020, 0x08020020, 0x08020800, 569 0x00000820, 0x00000000, 0x00000000, 0x08020020, 570 0x08000020, 0x08000800, 0x00020820, 0x00020000, 571 0x00020820, 0x00020000, 0x08020800, 0x00000800, 572 0x00000020, 0x08020020, 0x00000800, 0x00020820, 573 0x08000800, 0x00000020, 0x08000020, 0x08020000, 574 0x08020020, 0x08000000, 0x00020000, 0x08000820, 575 0x00000000, 0x08020820, 0x00020020, 0x08000020, 576 0x08020000, 0x08000800, 0x08000820, 0x00000000, 577 0x08020820, 0x00020800, 0x00020800, 0x00000820, 578 0x00000820, 0x00020020, 0x08000000, 0x08020800 579 ); 580 581 /** 582 * Test for engine validity 583 * 584 * This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine() 585 * 586 * @see \phpseclib\Crypt\Base::isValidEngine() 587 * @param int $engine 588 * @access public 589 * @return bool 590 */ 591 function isValidEngine($engine) 592 { 593 if ($this->key_length_max == 8) { 594 if ($engine == self::ENGINE_OPENSSL) { 595 $this->cipher_name_openssl_ecb = 'des-ecb'; 596 $this->cipher_name_openssl = 'des-' . $this->_openssl_translate_mode(); 597 } 598 } 599 600 return parent::isValidEngine($engine); 601 } 602 603 /** 604 * Sets the key. 605 * 606 * Keys can be of any length. DES, itself, uses 64-bit keys (eg. strlen($key) == 8), however, we 607 * only use the first eight, if $key has more then eight characters in it, and pad $key with the 608 * null byte if it is less then eight characters long. 609 * 610 * DES also requires that every eighth bit be a parity bit, however, we'll ignore that. 611 * 612 * If the key is not explicitly set, it'll be assumed to be all zero's. 613 * 614 * @see \phpseclib\Crypt\Base::setKey() 615 * @access public 616 * @param string $key 617 */ 618 function setKey($key) 619 { 620 // We check/cut here only up to max length of the key. 621 // Key padding to the proper length will be done in _setupKey() 622 if (strlen($key) > $this->key_length_max) { 623 $key = substr($key, 0, $this->key_length_max); 624 } 625 626 // Sets the key 627 parent::setKey($key); 628 } 629 630 /** 631 * Encrypts a block 632 * 633 * @see \phpseclib\Crypt\Base::_encryptBlock() 634 * @see \phpseclib\Crypt\Base::encrypt() 635 * @see self::encrypt() 636 * @access private 637 * @param string $in 638 * @return string 639 */ 640 function _encryptBlock($in) 641 { 642 return $this->_processBlock($in, self::ENCRYPT); 643 } 644 645 /** 646 * Decrypts a block 647 * 648 * @see \phpseclib\Crypt\Base::_decryptBlock() 649 * @see \phpseclib\Crypt\Base::decrypt() 650 * @see self::decrypt() 651 * @access private 652 * @param string $in 653 * @return string 654 */ 655 function _decryptBlock($in) 656 { 657 return $this->_processBlock($in, self::DECRYPT); 658 } 659 660 /** 661 * Encrypts or decrypts a 64-bit block 662 * 663 * $mode should be either self::ENCRYPT or self::DECRYPT. See 664 * {@link http://en.wikipedia.org/wiki/Image:Feistel.png Feistel.png} to get a general 665 * idea of what this function does. 666 * 667 * @see self::_encryptBlock() 668 * @see self::_decryptBlock() 669 * @access private 670 * @param string $block 671 * @param int $mode 672 * @return string 673 */ 674 function _processBlock($block, $mode) 675 { 676 static $sbox1, $sbox2, $sbox3, $sbox4, $sbox5, $sbox6, $sbox7, $sbox8, $shuffleip, $shuffleinvip; 677 if (!$sbox1) { 678 $sbox1 = array_map("intval", $this->sbox1); 679 $sbox2 = array_map("intval", $this->sbox2); 680 $sbox3 = array_map("intval", $this->sbox3); 681 $sbox4 = array_map("intval", $this->sbox4); 682 $sbox5 = array_map("intval", $this->sbox5); 683 $sbox6 = array_map("intval", $this->sbox6); 684 $sbox7 = array_map("intval", $this->sbox7); 685 $sbox8 = array_map("intval", $this->sbox8); 686 /* Merge $shuffle with $[inv]ipmap */ 687 for ($i = 0; $i < 256; ++$i) { 688 $shuffleip[] = $this->shuffle[$this->ipmap[$i]]; 689 $shuffleinvip[] = $this->shuffle[$this->invipmap[$i]]; 690 } 691 } 692 693 $keys = $this->keys[$mode]; 694 $ki = -1; 695 696 // Do the initial IP permutation. 697 $t = unpack('Nl/Nr', $block); 698 list($l, $r) = array($t['l'], $t['r']); 699 $block = ($shuffleip[ $r & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") | 700 ($shuffleip[($r >> 8) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") | 701 ($shuffleip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") | 702 ($shuffleip[($r >> 24) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") | 703 ($shuffleip[ $l & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") | 704 ($shuffleip[($l >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") | 705 ($shuffleip[($l >> 16) & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") | 706 ($shuffleip[($l >> 24) & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01"); 707 708 // Extract L0 and R0. 709 $t = unpack('Nl/Nr', $block); 710 list($l, $r) = array($t['l'], $t['r']); 711 712 for ($des_round = 0; $des_round < $this->des_rounds; ++$des_round) { 713 // Perform the 16 steps. 714 for ($i = 0; $i < 16; $i++) { 715 // start of "the Feistel (F) function" - see the following URL: 716 // http://en.wikipedia.org/wiki/Image:Data_Encryption_Standard_InfoBox_Diagram.png 717 // Merge key schedule. 718 $b1 = (($r >> 3) & 0x1FFFFFFF) ^ ($r << 29) ^ $keys[++$ki]; 719 $b2 = (($r >> 31) & 0x00000001) ^ ($r << 1) ^ $keys[++$ki]; 720 721 // S-box indexing. 722 $t = $sbox1[($b1 >> 24) & 0x3F] ^ $sbox2[($b2 >> 24) & 0x3F] ^ 723 $sbox3[($b1 >> 16) & 0x3F] ^ $sbox4[($b2 >> 16) & 0x3F] ^ 724 $sbox5[($b1 >> 8) & 0x3F] ^ $sbox6[($b2 >> 8) & 0x3F] ^ 725 $sbox7[ $b1 & 0x3F] ^ $sbox8[ $b2 & 0x3F] ^ $l; 726 // end of "the Feistel (F) function" 727 728 $l = $r; 729 $r = $t; 730 } 731 732 // Last step should not permute L & R. 733 $t = $l; 734 $l = $r; 735 $r = $t; 736 } 737 738 // Perform the inverse IP permutation. 739 return ($shuffleinvip[($r >> 24) & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") | 740 ($shuffleinvip[($l >> 24) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") | 741 ($shuffleinvip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") | 742 ($shuffleinvip[($l >> 16) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") | 743 ($shuffleinvip[($r >> 8) & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") | 744 ($shuffleinvip[($l >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") | 745 ($shuffleinvip[ $r & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") | 746 ($shuffleinvip[ $l & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01"); 747 } 748 749 /** 750 * Creates the key schedule 751 * 752 * @see \phpseclib\Crypt\Base::_setupKey() 753 * @access private 754 */ 755 function _setupKey() 756 { 757 if (isset($this->kl['key']) && $this->key === $this->kl['key'] && $this->des_rounds === $this->kl['des_rounds']) { 758 // already expanded 759 return; 760 } 761 $this->kl = array('key' => $this->key, 'des_rounds' => $this->des_rounds); 762 763 static $shifts = array( // number of key bits shifted per round 764 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 765 ); 766 767 static $pc1map = array( 768 0x00, 0x00, 0x08, 0x08, 0x04, 0x04, 0x0C, 0x0C, 769 0x02, 0x02, 0x0A, 0x0A, 0x06, 0x06, 0x0E, 0x0E, 770 0x10, 0x10, 0x18, 0x18, 0x14, 0x14, 0x1C, 0x1C, 771 0x12, 0x12, 0x1A, 0x1A, 0x16, 0x16, 0x1E, 0x1E, 772 0x20, 0x20, 0x28, 0x28, 0x24, 0x24, 0x2C, 0x2C, 773 0x22, 0x22, 0x2A, 0x2A, 0x26, 0x26, 0x2E, 0x2E, 774 0x30, 0x30, 0x38, 0x38, 0x34, 0x34, 0x3C, 0x3C, 775 0x32, 0x32, 0x3A, 0x3A, 0x36, 0x36, 0x3E, 0x3E, 776 0x40, 0x40, 0x48, 0x48, 0x44, 0x44, 0x4C, 0x4C, 777 0x42, 0x42, 0x4A, 0x4A, 0x46, 0x46, 0x4E, 0x4E, 778 0x50, 0x50, 0x58, 0x58, 0x54, 0x54, 0x5C, 0x5C, 779 0x52, 0x52, 0x5A, 0x5A, 0x56, 0x56, 0x5E, 0x5E, 780 0x60, 0x60, 0x68, 0x68, 0x64, 0x64, 0x6C, 0x6C, 781 0x62, 0x62, 0x6A, 0x6A, 0x66, 0x66, 0x6E, 0x6E, 782 0x70, 0x70, 0x78, 0x78, 0x74, 0x74, 0x7C, 0x7C, 783 0x72, 0x72, 0x7A, 0x7A, 0x76, 0x76, 0x7E, 0x7E, 784 0x80, 0x80, 0x88, 0x88, 0x84, 0x84, 0x8C, 0x8C, 785 0x82, 0x82, 0x8A, 0x8A, 0x86, 0x86, 0x8E, 0x8E, 786 0x90, 0x90, 0x98, 0x98, 0x94, 0x94, 0x9C, 0x9C, 787 0x92, 0x92, 0x9A, 0x9A, 0x96, 0x96, 0x9E, 0x9E, 788 0xA0, 0xA0, 0xA8, 0xA8, 0xA4, 0xA4, 0xAC, 0xAC, 789 0xA2, 0xA2, 0xAA, 0xAA, 0xA6, 0xA6, 0xAE, 0xAE, 790 0xB0, 0xB0, 0xB8, 0xB8, 0xB4, 0xB4, 0xBC, 0xBC, 791 0xB2, 0xB2, 0xBA, 0xBA, 0xB6, 0xB6, 0xBE, 0xBE, 792 0xC0, 0xC0, 0xC8, 0xC8, 0xC4, 0xC4, 0xCC, 0xCC, 793 0xC2, 0xC2, 0xCA, 0xCA, 0xC6, 0xC6, 0xCE, 0xCE, 794 0xD0, 0xD0, 0xD8, 0xD8, 0xD4, 0xD4, 0xDC, 0xDC, 795 0xD2, 0xD2, 0xDA, 0xDA, 0xD6, 0xD6, 0xDE, 0xDE, 796 0xE0, 0xE0, 0xE8, 0xE8, 0xE4, 0xE4, 0xEC, 0xEC, 797 0xE2, 0xE2, 0xEA, 0xEA, 0xE6, 0xE6, 0xEE, 0xEE, 798 0xF0, 0xF0, 0xF8, 0xF8, 0xF4, 0xF4, 0xFC, 0xFC, 799 0xF2, 0xF2, 0xFA, 0xFA, 0xF6, 0xF6, 0xFE, 0xFE 800 ); 801 802 // Mapping tables for the PC-2 transformation. 803 static $pc2mapc1 = array( 804 0x00000000, 0x00000400, 0x00200000, 0x00200400, 805 0x00000001, 0x00000401, 0x00200001, 0x00200401, 806 0x02000000, 0x02000400, 0x02200000, 0x02200400, 807 0x02000001, 0x02000401, 0x02200001, 0x02200401 808 ); 809 static $pc2mapc2 = array( 810 0x00000000, 0x00000800, 0x08000000, 0x08000800, 811 0x00010000, 0x00010800, 0x08010000, 0x08010800, 812 0x00000000, 0x00000800, 0x08000000, 0x08000800, 813 0x00010000, 0x00010800, 0x08010000, 0x08010800, 814 0x00000100, 0x00000900, 0x08000100, 0x08000900, 815 0x00010100, 0x00010900, 0x08010100, 0x08010900, 816 0x00000100, 0x00000900, 0x08000100, 0x08000900, 817 0x00010100, 0x00010900, 0x08010100, 0x08010900, 818 0x00000010, 0x00000810, 0x08000010, 0x08000810, 819 0x00010010, 0x00010810, 0x08010010, 0x08010810, 820 0x00000010, 0x00000810, 0x08000010, 0x08000810, 821 0x00010010, 0x00010810, 0x08010010, 0x08010810, 822 0x00000110, 0x00000910, 0x08000110, 0x08000910, 823 0x00010110, 0x00010910, 0x08010110, 0x08010910, 824 0x00000110, 0x00000910, 0x08000110, 0x08000910, 825 0x00010110, 0x00010910, 0x08010110, 0x08010910, 826 0x00040000, 0x00040800, 0x08040000, 0x08040800, 827 0x00050000, 0x00050800, 0x08050000, 0x08050800, 828 0x00040000, 0x00040800, 0x08040000, 0x08040800, 829 0x00050000, 0x00050800, 0x08050000, 0x08050800, 830 0x00040100, 0x00040900, 0x08040100, 0x08040900, 831 0x00050100, 0x00050900, 0x08050100, 0x08050900, 832 0x00040100, 0x00040900, 0x08040100, 0x08040900, 833 0x00050100, 0x00050900, 0x08050100, 0x08050900, 834 0x00040010, 0x00040810, 0x08040010, 0x08040810, 835 0x00050010, 0x00050810, 0x08050010, 0x08050810, 836 0x00040010, 0x00040810, 0x08040010, 0x08040810, 837 0x00050010, 0x00050810, 0x08050010, 0x08050810, 838 0x00040110, 0x00040910, 0x08040110, 0x08040910, 839 0x00050110, 0x00050910, 0x08050110, 0x08050910, 840 0x00040110, 0x00040910, 0x08040110, 0x08040910, 841 0x00050110, 0x00050910, 0x08050110, 0x08050910, 842 0x01000000, 0x01000800, 0x09000000, 0x09000800, 843 0x01010000, 0x01010800, 0x09010000, 0x09010800, 844 0x01000000, 0x01000800, 0x09000000, 0x09000800, 845 0x01010000, 0x01010800, 0x09010000, 0x09010800, 846 0x01000100, 0x01000900, 0x09000100, 0x09000900, 847 0x01010100, 0x01010900, 0x09010100, 0x09010900, 848 0x01000100, 0x01000900, 0x09000100, 0x09000900, 849 0x01010100, 0x01010900, 0x09010100, 0x09010900, 850 0x01000010, 0x01000810, 0x09000010, 0x09000810, 851 0x01010010, 0x01010810, 0x09010010, 0x09010810, 852 0x01000010, 0x01000810, 0x09000010, 0x09000810, 853 0x01010010, 0x01010810, 0x09010010, 0x09010810, 854 0x01000110, 0x01000910, 0x09000110, 0x09000910, 855 0x01010110, 0x01010910, 0x09010110, 0x09010910, 856 0x01000110, 0x01000910, 0x09000110, 0x09000910, 857 0x01010110, 0x01010910, 0x09010110, 0x09010910, 858 0x01040000, 0x01040800, 0x09040000, 0x09040800, 859 0x01050000, 0x01050800, 0x09050000, 0x09050800, 860 0x01040000, 0x01040800, 0x09040000, 0x09040800, 861 0x01050000, 0x01050800, 0x09050000, 0x09050800, 862 0x01040100, 0x01040900, 0x09040100, 0x09040900, 863 0x01050100, 0x01050900, 0x09050100, 0x09050900, 864 0x01040100, 0x01040900, 0x09040100, 0x09040900, 865 0x01050100, 0x01050900, 0x09050100, 0x09050900, 866 0x01040010, 0x01040810, 0x09040010, 0x09040810, 867 0x01050010, 0x01050810, 0x09050010, 0x09050810, 868 0x01040010, 0x01040810, 0x09040010, 0x09040810, 869 0x01050010, 0x01050810, 0x09050010, 0x09050810, 870 0x01040110, 0x01040910, 0x09040110, 0x09040910, 871 0x01050110, 0x01050910, 0x09050110, 0x09050910, 872 0x01040110, 0x01040910, 0x09040110, 0x09040910, 873 0x01050110, 0x01050910, 0x09050110, 0x09050910 874 ); 875 static $pc2mapc3 = array( 876 0x00000000, 0x00000004, 0x00001000, 0x00001004, 877 0x00000000, 0x00000004, 0x00001000, 0x00001004, 878 0x10000000, 0x10000004, 0x10001000, 0x10001004, 879 0x10000000, 0x10000004, 0x10001000, 0x10001004, 880 0x00000020, 0x00000024, 0x00001020, 0x00001024, 881 0x00000020, 0x00000024, 0x00001020, 0x00001024, 882 0x10000020, 0x10000024, 0x10001020, 0x10001024, 883 0x10000020, 0x10000024, 0x10001020, 0x10001024, 884 0x00080000, 0x00080004, 0x00081000, 0x00081004, 885 0x00080000, 0x00080004, 0x00081000, 0x00081004, 886 0x10080000, 0x10080004, 0x10081000, 0x10081004, 887 0x10080000, 0x10080004, 0x10081000, 0x10081004, 888 0x00080020, 0x00080024, 0x00081020, 0x00081024, 889 0x00080020, 0x00080024, 0x00081020, 0x00081024, 890 0x10080020, 0x10080024, 0x10081020, 0x10081024, 891 0x10080020, 0x10080024, 0x10081020, 0x10081024, 892 0x20000000, 0x20000004, 0x20001000, 0x20001004, 893 0x20000000, 0x20000004, 0x20001000, 0x20001004, 894 0x30000000, 0x30000004, 0x30001000, 0x30001004, 895 0x30000000, 0x30000004, 0x30001000, 0x30001004, 896 0x20000020, 0x20000024, 0x20001020, 0x20001024, 897 0x20000020, 0x20000024, 0x20001020, 0x20001024, 898 0x30000020, 0x30000024, 0x30001020, 0x30001024, 899 0x30000020, 0x30000024, 0x30001020, 0x30001024, 900 0x20080000, 0x20080004, 0x20081000, 0x20081004, 901 0x20080000, 0x20080004, 0x20081000, 0x20081004, 902 0x30080000, 0x30080004, 0x30081000, 0x30081004, 903 0x30080000, 0x30080004, 0x30081000, 0x30081004, 904 0x20080020, 0x20080024, 0x20081020, 0x20081024, 905 0x20080020, 0x20080024, 0x20081020, 0x20081024, 906 0x30080020, 0x30080024, 0x30081020, 0x30081024, 907 0x30080020, 0x30080024, 0x30081020, 0x30081024, 908 0x00000002, 0x00000006, 0x00001002, 0x00001006, 909 0x00000002, 0x00000006, 0x00001002, 0x00001006, 910 0x10000002, 0x10000006, 0x10001002, 0x10001006, 911 0x10000002, 0x10000006, 0x10001002, 0x10001006, 912 0x00000022, 0x00000026, 0x00001022, 0x00001026, 913 0x00000022, 0x00000026, 0x00001022, 0x00001026, 914 0x10000022, 0x10000026, 0x10001022, 0x10001026, 915 0x10000022, 0x10000026, 0x10001022, 0x10001026, 916 0x00080002, 0x00080006, 0x00081002, 0x00081006, 917 0x00080002, 0x00080006, 0x00081002, 0x00081006, 918 0x10080002, 0x10080006, 0x10081002, 0x10081006, 919 0x10080002, 0x10080006, 0x10081002, 0x10081006, 920 0x00080022, 0x00080026, 0x00081022, 0x00081026, 921 0x00080022, 0x00080026, 0x00081022, 0x00081026, 922 0x10080022, 0x10080026, 0x10081022, 0x10081026, 923 0x10080022, 0x10080026, 0x10081022, 0x10081026, 924 0x20000002, 0x20000006, 0x20001002, 0x20001006, 925 0x20000002, 0x20000006, 0x20001002, 0x20001006, 926 0x30000002, 0x30000006, 0x30001002, 0x30001006, 927 0x30000002, 0x30000006, 0x30001002, 0x30001006, 928 0x20000022, 0x20000026, 0x20001022, 0x20001026, 929 0x20000022, 0x20000026, 0x20001022, 0x20001026, 930 0x30000022, 0x30000026, 0x30001022, 0x30001026, 931 0x30000022, 0x30000026, 0x30001022, 0x30001026, 932 0x20080002, 0x20080006, 0x20081002, 0x20081006, 933 0x20080002, 0x20080006, 0x20081002, 0x20081006, 934 0x30080002, 0x30080006, 0x30081002, 0x30081006, 935 0x30080002, 0x30080006, 0x30081002, 0x30081006, 936 0x20080022, 0x20080026, 0x20081022, 0x20081026, 937 0x20080022, 0x20080026, 0x20081022, 0x20081026, 938 0x30080022, 0x30080026, 0x30081022, 0x30081026, 939 0x30080022, 0x30080026, 0x30081022, 0x30081026 940 ); 941 static $pc2mapc4 = array( 942 0x00000000, 0x00100000, 0x00000008, 0x00100008, 943 0x00000200, 0x00100200, 0x00000208, 0x00100208, 944 0x00000000, 0x00100000, 0x00000008, 0x00100008, 945 0x00000200, 0x00100200, 0x00000208, 0x00100208, 946 0x04000000, 0x04100000, 0x04000008, 0x04100008, 947 0x04000200, 0x04100200, 0x04000208, 0x04100208, 948 0x04000000, 0x04100000, 0x04000008, 0x04100008, 949 0x04000200, 0x04100200, 0x04000208, 0x04100208, 950 0x00002000, 0x00102000, 0x00002008, 0x00102008, 951 0x00002200, 0x00102200, 0x00002208, 0x00102208, 952 0x00002000, 0x00102000, 0x00002008, 0x00102008, 953 0x00002200, 0x00102200, 0x00002208, 0x00102208, 954 0x04002000, 0x04102000, 0x04002008, 0x04102008, 955 0x04002200, 0x04102200, 0x04002208, 0x04102208, 956 0x04002000, 0x04102000, 0x04002008, 0x04102008, 957 0x04002200, 0x04102200, 0x04002208, 0x04102208, 958 0x00000000, 0x00100000, 0x00000008, 0x00100008, 959 0x00000200, 0x00100200, 0x00000208, 0x00100208, 960 0x00000000, 0x00100000, 0x00000008, 0x00100008, 961 0x00000200, 0x00100200, 0x00000208, 0x00100208, 962 0x04000000, 0x04100000, 0x04000008, 0x04100008, 963 0x04000200, 0x04100200, 0x04000208, 0x04100208, 964 0x04000000, 0x04100000, 0x04000008, 0x04100008, 965 0x04000200, 0x04100200, 0x04000208, 0x04100208, 966 0x00002000, 0x00102000, 0x00002008, 0x00102008, 967 0x00002200, 0x00102200, 0x00002208, 0x00102208, 968 0x00002000, 0x00102000, 0x00002008, 0x00102008, 969 0x00002200, 0x00102200, 0x00002208, 0x00102208, 970 0x04002000, 0x04102000, 0x04002008, 0x04102008, 971 0x04002200, 0x04102200, 0x04002208, 0x04102208, 972 0x04002000, 0x04102000, 0x04002008, 0x04102008, 973 0x04002200, 0x04102200, 0x04002208, 0x04102208, 974 0x00020000, 0x00120000, 0x00020008, 0x00120008, 975 0x00020200, 0x00120200, 0x00020208, 0x00120208, 976 0x00020000, 0x00120000, 0x00020008, 0x00120008, 977 0x00020200, 0x00120200, 0x00020208, 0x00120208, 978 0x04020000, 0x04120000, 0x04020008, 0x04120008, 979 0x04020200, 0x04120200, 0x04020208, 0x04120208, 980 0x04020000, 0x04120000, 0x04020008, 0x04120008, 981 0x04020200, 0x04120200, 0x04020208, 0x04120208, 982 0x00022000, 0x00122000, 0x00022008, 0x00122008, 983 0x00022200, 0x00122200, 0x00022208, 0x00122208, 984 0x00022000, 0x00122000, 0x00022008, 0x00122008, 985 0x00022200, 0x00122200, 0x00022208, 0x00122208, 986 0x04022000, 0x04122000, 0x04022008, 0x04122008, 987 0x04022200, 0x04122200, 0x04022208, 0x04122208, 988 0x04022000, 0x04122000, 0x04022008, 0x04122008, 989 0x04022200, 0x04122200, 0x04022208, 0x04122208, 990 0x00020000, 0x00120000, 0x00020008, 0x00120008, 991 0x00020200, 0x00120200, 0x00020208, 0x00120208, 992 0x00020000, 0x00120000, 0x00020008, 0x00120008, 993 0x00020200, 0x00120200, 0x00020208, 0x00120208, 994 0x04020000, 0x04120000, 0x04020008, 0x04120008, 995 0x04020200, 0x04120200, 0x04020208, 0x04120208, 996 0x04020000, 0x04120000, 0x04020008, 0x04120008, 997 0x04020200, 0x04120200, 0x04020208, 0x04120208, 998 0x00022000, 0x00122000, 0x00022008, 0x00122008, 999 0x00022200, 0x00122200, 0x00022208, 0x00122208, 1000 0x00022000, 0x00122000, 0x00022008, 0x00122008, 1001 0x00022200, 0x00122200, 0x00022208, 0x00122208, 1002 0x04022000, 0x04122000, 0x04022008, 0x04122008, 1003 0x04022200, 0x04122200, 0x04022208, 0x04122208, 1004 0x04022000, 0x04122000, 0x04022008, 0x04122008, 1005 0x04022200, 0x04122200, 0x04022208, 0x04122208 1006 ); 1007 static $pc2mapd1 = array( 1008 0x00000000, 0x00000001, 0x08000000, 0x08000001, 1009 0x00200000, 0x00200001, 0x08200000, 0x08200001, 1010 0x00000002, 0x00000003, 0x08000002, 0x08000003, 1011 0x00200002, 0x00200003, 0x08200002, 0x08200003 1012 ); 1013 static $pc2mapd2 = array( 1014 0x00000000, 0x00100000, 0x00000800, 0x00100800, 1015 0x00000000, 0x00100000, 0x00000800, 0x00100800, 1016 0x04000000, 0x04100000, 0x04000800, 0x04100800, 1017 0x04000000, 0x04100000, 0x04000800, 0x04100800, 1018 0x00000004, 0x00100004, 0x00000804, 0x00100804, 1019 0x00000004, 0x00100004, 0x00000804, 0x00100804, 1020 0x04000004, 0x04100004, 0x04000804, 0x04100804, 1021 0x04000004, 0x04100004, 0x04000804, 0x04100804, 1022 0x00000000, 0x00100000, 0x00000800, 0x00100800, 1023 0x00000000, 0x00100000, 0x00000800, 0x00100800, 1024 0x04000000, 0x04100000, 0x04000800, 0x04100800, 1025 0x04000000, 0x04100000, 0x04000800, 0x04100800, 1026 0x00000004, 0x00100004, 0x00000804, 0x00100804, 1027 0x00000004, 0x00100004, 0x00000804, 0x00100804, 1028 0x04000004, 0x04100004, 0x04000804, 0x04100804, 1029 0x04000004, 0x04100004, 0x04000804, 0x04100804, 1030 0x00000200, 0x00100200, 0x00000A00, 0x00100A00, 1031 0x00000200, 0x00100200, 0x00000A00, 0x00100A00, 1032 0x04000200, 0x04100200, 0x04000A00, 0x04100A00, 1033 0x04000200, 0x04100200, 0x04000A00, 0x04100A00, 1034 0x00000204, 0x00100204, 0x00000A04, 0x00100A04, 1035 0x00000204, 0x00100204, 0x00000A04, 0x00100A04, 1036 0x04000204, 0x04100204, 0x04000A04, 0x04100A04, 1037 0x04000204, 0x04100204, 0x04000A04, 0x04100A04, 1038 0x00000200, 0x00100200, 0x00000A00, 0x00100A00, 1039 0x00000200, 0x00100200, 0x00000A00, 0x00100A00, 1040 0x04000200, 0x04100200, 0x04000A00, 0x04100A00, 1041 0x04000200, 0x04100200, 0x04000A00, 0x04100A00, 1042 0x00000204, 0x00100204, 0x00000A04, 0x00100A04, 1043 0x00000204, 0x00100204, 0x00000A04, 0x00100A04, 1044 0x04000204, 0x04100204, 0x04000A04, 0x04100A04, 1045 0x04000204, 0x04100204, 0x04000A04, 0x04100A04, 1046 0x00020000, 0x00120000, 0x00020800, 0x00120800, 1047 0x00020000, 0x00120000, 0x00020800, 0x00120800, 1048 0x04020000, 0x04120000, 0x04020800, 0x04120800, 1049 0x04020000, 0x04120000, 0x04020800, 0x04120800, 1050 0x00020004, 0x00120004, 0x00020804, 0x00120804, 1051 0x00020004, 0x00120004, 0x00020804, 0x00120804, 1052 0x04020004, 0x04120004, 0x04020804, 0x04120804, 1053 0x04020004, 0x04120004, 0x04020804, 0x04120804, 1054 0x00020000, 0x00120000, 0x00020800, 0x00120800, 1055 0x00020000, 0x00120000, 0x00020800, 0x00120800, 1056 0x04020000, 0x04120000, 0x04020800, 0x04120800, 1057 0x04020000, 0x04120000, 0x04020800, 0x04120800, 1058 0x00020004, 0x00120004, 0x00020804, 0x00120804, 1059 0x00020004, 0x00120004, 0x00020804, 0x00120804, 1060 0x04020004, 0x04120004, 0x04020804, 0x04120804, 1061 0x04020004, 0x04120004, 0x04020804, 0x04120804, 1062 0x00020200, 0x00120200, 0x00020A00, 0x00120A00, 1063 0x00020200, 0x00120200, 0x00020A00, 0x00120A00, 1064 0x04020200, 0x04120200, 0x04020A00, 0x04120A00, 1065 0x04020200, 0x04120200, 0x04020A00, 0x04120A00, 1066 0x00020204, 0x00120204, 0x00020A04, 0x00120A04, 1067 0x00020204, 0x00120204, 0x00020A04, 0x00120A04, 1068 0x04020204, 0x04120204, 0x04020A04, 0x04120A04, 1069 0x04020204, 0x04120204, 0x04020A04, 0x04120A04, 1070 0x00020200, 0x00120200, 0x00020A00, 0x00120A00, 1071 0x00020200, 0x00120200, 0x00020A00, 0x00120A00, 1072 0x04020200, 0x04120200, 0x04020A00, 0x04120A00, 1073 0x04020200, 0x04120200, 0x04020A00, 0x04120A00, 1074 0x00020204, 0x00120204, 0x00020A04, 0x00120A04, 1075 0x00020204, 0x00120204, 0x00020A04, 0x00120A04, 1076 0x04020204, 0x04120204, 0x04020A04, 0x04120A04, 1077 0x04020204, 0x04120204, 0x04020A04, 0x04120A04 1078 ); 1079 static $pc2mapd3 = array( 1080 0x00000000, 0x00010000, 0x02000000, 0x02010000, 1081 0x00000020, 0x00010020, 0x02000020, 0x02010020, 1082 0x00040000, 0x00050000, 0x02040000, 0x02050000, 1083 0x00040020, 0x00050020, 0x02040020, 0x02050020, 1084 0x00002000, 0x00012000, 0x02002000, 0x02012000, 1085 0x00002020, 0x00012020, 0x02002020, 0x02012020, 1086 0x00042000, 0x00052000, 0x02042000, 0x02052000, 1087 0x00042020, 0x00052020, 0x02042020, 0x02052020, 1088 0x00000000, 0x00010000, 0x02000000, 0x02010000, 1089 0x00000020, 0x00010020, 0x02000020, 0x02010020, 1090 0x00040000, 0x00050000, 0x02040000, 0x02050000, 1091 0x00040020, 0x00050020, 0x02040020, 0x02050020, 1092 0x00002000, 0x00012000, 0x02002000, 0x02012000, 1093 0x00002020, 0x00012020, 0x02002020, 0x02012020, 1094 0x00042000, 0x00052000, 0x02042000, 0x02052000, 1095 0x00042020, 0x00052020, 0x02042020, 0x02052020, 1096 0x00000010, 0x00010010, 0x02000010, 0x02010010, 1097 0x00000030, 0x00010030, 0x02000030, 0x02010030, 1098 0x00040010, 0x00050010, 0x02040010, 0x02050010, 1099 0x00040030, 0x00050030, 0x02040030, 0x02050030, 1100 0x00002010, 0x00012010, 0x02002010, 0x02012010, 1101 0x00002030, 0x00012030, 0x02002030, 0x02012030, 1102 0x00042010, 0x00052010, 0x02042010, 0x02052010, 1103 0x00042030, 0x00052030, 0x02042030, 0x02052030, 1104 0x00000010, 0x00010010, 0x02000010, 0x02010010, 1105 0x00000030, 0x00010030, 0x02000030, 0x02010030, 1106 0x00040010, 0x00050010, 0x02040010, 0x02050010, 1107 0x00040030, 0x00050030, 0x02040030, 0x02050030, 1108 0x00002010, 0x00012010, 0x02002010, 0x02012010, 1109 0x00002030, 0x00012030, 0x02002030, 0x02012030, 1110 0x00042010, 0x00052010, 0x02042010, 0x02052010, 1111 0x00042030, 0x00052030, 0x02042030, 0x02052030, 1112 0x20000000, 0x20010000, 0x22000000, 0x22010000, 1113 0x20000020, 0x20010020, 0x22000020, 0x22010020, 1114 0x20040000, 0x20050000, 0x22040000, 0x22050000, 1115 0x20040020, 0x20050020, 0x22040020, 0x22050020, 1116 0x20002000, 0x20012000, 0x22002000, 0x22012000, 1117 0x20002020, 0x20012020, 0x22002020, 0x22012020, 1118 0x20042000, 0x20052000, 0x22042000, 0x22052000, 1119 0x20042020, 0x20052020, 0x22042020, 0x22052020, 1120 0x20000000, 0x20010000, 0x22000000, 0x22010000, 1121 0x20000020, 0x20010020, 0x22000020, 0x22010020, 1122 0x20040000, 0x20050000, 0x22040000, 0x22050000, 1123 0x20040020, 0x20050020, 0x22040020, 0x22050020, 1124 0x20002000, 0x20012000, 0x22002000, 0x22012000, 1125 0x20002020, 0x20012020, 0x22002020, 0x22012020, 1126 0x20042000, 0x20052000, 0x22042000, 0x22052000, 1127 0x20042020, 0x20052020, 0x22042020, 0x22052020, 1128 0x20000010, 0x20010010, 0x22000010, 0x22010010, 1129 0x20000030, 0x20010030, 0x22000030, 0x22010030, 1130 0x20040010, 0x20050010, 0x22040010, 0x22050010, 1131 0x20040030, 0x20050030, 0x22040030, 0x22050030, 1132 0x20002010, 0x20012010, 0x22002010, 0x22012010, 1133 0x20002030, 0x20012030, 0x22002030, 0x22012030, 1134 0x20042010, 0x20052010, 0x22042010, 0x22052010, 1135 0x20042030, 0x20052030, 0x22042030, 0x22052030, 1136 0x20000010, 0x20010010, 0x22000010, 0x22010010, 1137 0x20000030, 0x20010030, 0x22000030, 0x22010030, 1138 0x20040010, 0x20050010, 0x22040010, 0x22050010, 1139 0x20040030, 0x20050030, 0x22040030, 0x22050030, 1140 0x20002010, 0x20012010, 0x22002010, 0x22012010, 1141 0x20002030, 0x20012030, 0x22002030, 0x22012030, 1142 0x20042010, 0x20052010, 0x22042010, 0x22052010, 1143 0x20042030, 0x20052030, 0x22042030, 0x22052030 1144 ); 1145 static $pc2mapd4 = array( 1146 0x00000000, 0x00000400, 0x01000000, 0x01000400, 1147 0x00000000, 0x00000400, 0x01000000, 0x01000400, 1148 0x00000100, 0x00000500, 0x01000100, 0x01000500, 1149 0x00000100, 0x00000500, 0x01000100, 0x01000500, 1150 0x10000000, 0x10000400, 0x11000000, 0x11000400, 1151 0x10000000, 0x10000400, 0x11000000, 0x11000400, 1152 0x10000100, 0x10000500, 0x11000100, 0x11000500, 1153 0x10000100, 0x10000500, 0x11000100, 0x11000500, 1154 0x00080000, 0x00080400, 0x01080000, 0x01080400, 1155 0x00080000, 0x00080400, 0x01080000, 0x01080400, 1156 0x00080100, 0x00080500, 0x01080100, 0x01080500, 1157 0x00080100, 0x00080500, 0x01080100, 0x01080500, 1158 0x10080000, 0x10080400, 0x11080000, 0x11080400, 1159 0x10080000, 0x10080400, 0x11080000, 0x11080400, 1160 0x10080100, 0x10080500, 0x11080100, 0x11080500, 1161 0x10080100, 0x10080500, 0x11080100, 0x11080500, 1162 0x00000008, 0x00000408, 0x01000008, 0x01000408, 1163 0x00000008, 0x00000408, 0x01000008, 0x01000408, 1164 0x00000108, 0x00000508, 0x01000108, 0x01000508, 1165 0x00000108, 0x00000508, 0x01000108, 0x01000508, 1166 0x10000008, 0x10000408, 0x11000008, 0x11000408, 1167 0x10000008, 0x10000408, 0x11000008, 0x11000408, 1168 0x10000108, 0x10000508, 0x11000108, 0x11000508, 1169 0x10000108, 0x10000508, 0x11000108, 0x11000508, 1170 0x00080008, 0x00080408, 0x01080008, 0x01080408, 1171 0x00080008, 0x00080408, 0x01080008, 0x01080408, 1172 0x00080108, 0x00080508, 0x01080108, 0x01080508, 1173 0x00080108, 0x00080508, 0x01080108, 0x01080508, 1174 0x10080008, 0x10080408, 0x11080008, 0x11080408, 1175 0x10080008, 0x10080408, 0x11080008, 0x11080408, 1176 0x10080108, 0x10080508, 0x11080108, 0x11080508, 1177 0x10080108, 0x10080508, 0x11080108, 0x11080508, 1178 0x00001000, 0x00001400, 0x01001000, 0x01001400, 1179 0x00001000, 0x00001400, 0x01001000, 0x01001400, 1180 0x00001100, 0x00001500, 0x01001100, 0x01001500, 1181 0x00001100, 0x00001500, 0x01001100, 0x01001500, 1182 0x10001000, 0x10001400, 0x11001000, 0x11001400, 1183 0x10001000, 0x10001400, 0x11001000, 0x11001400, 1184 0x10001100, 0x10001500, 0x11001100, 0x11001500, 1185 0x10001100, 0x10001500, 0x11001100, 0x11001500, 1186 0x00081000, 0x00081400, 0x01081000, 0x01081400, 1187 0x00081000, 0x00081400, 0x01081000, 0x01081400, 1188 0x00081100, 0x00081500, 0x01081100, 0x01081500, 1189 0x00081100, 0x00081500, 0x01081100, 0x01081500, 1190 0x10081000, 0x10081400, 0x11081000, 0x11081400, 1191 0x10081000, 0x10081400, 0x11081000, 0x11081400, 1192 0x10081100, 0x10081500, 0x11081100, 0x11081500, 1193 0x10081100, 0x10081500, 0x11081100, 0x11081500, 1194 0x00001008, 0x00001408, 0x01001008, 0x01001408, 1195 0x00001008, 0x00001408, 0x01001008, 0x01001408, 1196 0x00001108, 0x00001508, 0x01001108, 0x01001508, 1197 0x00001108, 0x00001508, 0x01001108, 0x01001508, 1198 0x10001008, 0x10001408, 0x11001008, 0x11001408, 1199 0x10001008, 0x10001408, 0x11001008, 0x11001408, 1200 0x10001108, 0x10001508, 0x11001108, 0x11001508, 1201 0x10001108, 0x10001508, 0x11001108, 0x11001508, 1202 0x00081008, 0x00081408, 0x01081008, 0x01081408, 1203 0x00081008, 0x00081408, 0x01081008, 0x01081408, 1204 0x00081108, 0x00081508, 0x01081108, 0x01081508, 1205 0x00081108, 0x00081508, 0x01081108, 0x01081508, 1206 0x10081008, 0x10081408, 0x11081008, 0x11081408, 1207 0x10081008, 0x10081408, 0x11081008, 0x11081408, 1208 0x10081108, 0x10081508, 0x11081108, 0x11081508, 1209 0x10081108, 0x10081508, 0x11081108, 0x11081508 1210 ); 1211 1212 $keys = array(); 1213 for ($des_round = 0; $des_round < $this->des_rounds; ++$des_round) { 1214 // pad the key and remove extra characters as appropriate. 1215 $key = str_pad(substr($this->key, $des_round * 8, 8), 8, "\0"); 1216 1217 // Perform the PC/1 transformation and compute C and D. 1218 $t = unpack('Nl/Nr', $key); 1219 list($l, $r) = array($t['l'], $t['r']); 1220 $key = ($this->shuffle[$pc1map[ $r & 0xFF]] & "\x80\x80\x80\x80\x80\x80\x80\x00") | 1221 ($this->shuffle[$pc1map[($r >> 8) & 0xFF]] & "\x40\x40\x40\x40\x40\x40\x40\x00") | 1222 ($this->shuffle[$pc1map[($r >> 16) & 0xFF]] & "\x20\x20\x20\x20\x20\x20\x20\x00") | 1223 ($this->shuffle[$pc1map[($r >> 24) & 0xFF]] & "\x10\x10\x10\x10\x10\x10\x10\x00") | 1224 ($this->shuffle[$pc1map[ $l & 0xFF]] & "\x08\x08\x08\x08\x08\x08\x08\x00") | 1225 ($this->shuffle[$pc1map[($l >> 8) & 0xFF]] & "\x04\x04\x04\x04\x04\x04\x04\x00") | 1226 ($this->shuffle[$pc1map[($l >> 16) & 0xFF]] & "\x02\x02\x02\x02\x02\x02\x02\x00") | 1227 ($this->shuffle[$pc1map[($l >> 24) & 0xFF]] & "\x01\x01\x01\x01\x01\x01\x01\x00"); 1228 $key = unpack('Nc/Nd', $key); 1229 $c = ( $key['c'] >> 4) & 0x0FFFFFFF; 1230 $d = (($key['d'] >> 4) & 0x0FFFFFF0) | ($key['c'] & 0x0F); 1231 1232 $keys[$des_round] = array( 1233 self::ENCRYPT => array(), 1234 self::DECRYPT => array_fill(0, 32, 0) 1235 ); 1236 for ($i = 0, $ki = 31; $i < 16; ++$i, $ki-= 2) { 1237 $c <<= $shifts[$i]; 1238 $c = ($c | ($c >> 28)) & 0x0FFFFFFF; 1239 $d <<= $shifts[$i]; 1240 $d = ($d | ($d >> 28)) & 0x0FFFFFFF; 1241 1242 // Perform the PC-2 transformation. 1243 $cp = $pc2mapc1[ $c >> 24 ] | $pc2mapc2[($c >> 16) & 0xFF] | 1244 $pc2mapc3[($c >> 8) & 0xFF] | $pc2mapc4[ $c & 0xFF]; 1245 $dp = $pc2mapd1[ $d >> 24 ] | $pc2mapd2[($d >> 16) & 0xFF] | 1246 $pc2mapd3[($d >> 8) & 0xFF] | $pc2mapd4[ $d & 0xFF]; 1247 1248 // Reorder: odd bytes/even bytes. Push the result in key schedule. 1249 $val1 = ( $cp & 0xFF000000) | (($cp << 8) & 0x00FF0000) | 1250 (($dp >> 16) & 0x0000FF00) | (($dp >> 8) & 0x000000FF); 1251 $val2 = (($cp << 8) & 0xFF000000) | (($cp << 16) & 0x00FF0000) | 1252 (($dp >> 8) & 0x0000FF00) | ( $dp & 0x000000FF); 1253 $keys[$des_round][self::ENCRYPT][ ] = $val1; 1254 $keys[$des_round][self::DECRYPT][$ki - 1] = $val1; 1255 $keys[$des_round][self::ENCRYPT][ ] = $val2; 1256 $keys[$des_round][self::DECRYPT][$ki ] = $val2; 1257 } 1258 } 1259 1260 switch ($this->des_rounds) { 1261 case 3: // 3DES keys 1262 $this->keys = array( 1263 self::ENCRYPT => array_merge( 1264 $keys[0][self::ENCRYPT], 1265 $keys[1][self::DECRYPT], 1266 $keys[2][self::ENCRYPT] 1267 ), 1268 self::DECRYPT => array_merge( 1269 $keys[2][self::DECRYPT], 1270 $keys[1][self::ENCRYPT], 1271 $keys[0][self::DECRYPT] 1272 ) 1273 ); 1274 break; 1275 // case 1: // DES keys 1276 default: 1277 $this->keys = array( 1278 self::ENCRYPT => $keys[0][self::ENCRYPT], 1279 self::DECRYPT => $keys[0][self::DECRYPT] 1280 ); 1281 } 1282 } 1283 1284 /** 1285 * Setup the performance-optimized function for de/encrypt() 1286 * 1287 * @see \phpseclib\Crypt\Base::_setupInlineCrypt() 1288 * @access private 1289 */ 1290 function _setupInlineCrypt() 1291 { 1292 $lambda_functions =& self::_getLambdaFunctions(); 1293 1294 // Engine configuration for: 1295 // - DES ($des_rounds == 1) or 1296 // - 3DES ($des_rounds == 3) 1297 $des_rounds = $this->des_rounds; 1298 1299 // We create max. 10 hi-optimized code for memory reason. Means: For each $key one ultra fast inline-crypt function. 1300 // (Currently, for DES, one generated $lambda_function cost on php5.5@32bit ~135kb unfreeable mem and ~230kb on php5.5@64bit) 1301 // (Currently, for TripleDES, one generated $lambda_function cost on php5.5@32bit ~240kb unfreeable mem and ~340kb on php5.5@64bit) 1302 // After that, we'll still create very fast optimized code but not the hi-ultimative code, for each $mode one 1303 $gen_hi_opt_code = (bool)( count($lambda_functions) < 10 ); 1304 1305 // Generation of a unique hash for our generated code 1306 $code_hash = "Crypt_DES, $des_rounds, {$this->mode}"; 1307 if ($gen_hi_opt_code) { 1308 // For hi-optimized code, we create for each combination of 1309 // $mode, $des_rounds and $this->key its own encrypt/decrypt function. 1310 // After max 10 hi-optimized functions, we create generic 1311 // (still very fast.. but not ultra) functions for each $mode/$des_rounds 1312 // Currently 2 * 5 generic functions will be then max. possible. 1313 $code_hash = str_pad($code_hash, 32) . $this->_hashInlineCryptFunction($this->key); 1314 } 1315 1316 // Is there a re-usable $lambda_functions in there? If not, we have to create it. 1317 if (!isset($lambda_functions[$code_hash])) { 1318 // Init code for both, encrypt and decrypt. 1319 $init_crypt = 'static $sbox1, $sbox2, $sbox3, $sbox4, $sbox5, $sbox6, $sbox7, $sbox8, $shuffleip, $shuffleinvip; 1320 if (!$sbox1) { 1321 $sbox1 = array_map("intval", $self->sbox1); 1322 $sbox2 = array_map("intval", $self->sbox2); 1323 $sbox3 = array_map("intval", $self->sbox3); 1324 $sbox4 = array_map("intval", $self->sbox4); 1325 $sbox5 = array_map("intval", $self->sbox5); 1326 $sbox6 = array_map("intval", $self->sbox6); 1327 $sbox7 = array_map("intval", $self->sbox7); 1328 $sbox8 = array_map("intval", $self->sbox8);' 1329 /* Merge $shuffle with $[inv]ipmap */ . ' 1330 for ($i = 0; $i < 256; ++$i) { 1331 $shuffleip[] = $self->shuffle[$self->ipmap[$i]]; 1332 $shuffleinvip[] = $self->shuffle[$self->invipmap[$i]]; 1333 } 1334 } 1335 '; 1336 1337 switch (true) { 1338 case $gen_hi_opt_code: 1339 // In Hi-optimized code mode, we use our [3]DES key schedule as hardcoded integers. 1340 // No futher initialisation of the $keys schedule is necessary. 1341 // That is the extra performance boost. 1342 $k = array( 1343 self::ENCRYPT => $this->keys[self::ENCRYPT], 1344 self::DECRYPT => $this->keys[self::DECRYPT] 1345 ); 1346 $init_encrypt = ''; 1347 $init_decrypt = ''; 1348 break; 1349 default: 1350 // In generic optimized code mode, we have to use, as the best compromise [currently], 1351 // our key schedule as $ke/$kd arrays. (with hardcoded indexes...) 1352 $k = array( 1353 self::ENCRYPT => array(), 1354 self::DECRYPT => array() 1355 ); 1356 for ($i = 0, $c = count($this->keys[self::ENCRYPT]); $i < $c; ++$i) { 1357 $k[self::ENCRYPT][$i] = '$ke[' . $i . ']'; 1358 $k[self::DECRYPT][$i] = '$kd[' . $i . ']'; 1359 } 1360 $init_encrypt = '$ke = $self->keys[$self::ENCRYPT];'; 1361 $init_decrypt = '$kd = $self->keys[$self::DECRYPT];'; 1362 break; 1363 } 1364 1365 // Creating code for en- and decryption. 1366 $crypt_block = array(); 1367 foreach (array(self::ENCRYPT, self::DECRYPT) as $c) { 1368 /* Do the initial IP permutation. */ 1369 $crypt_block[$c] = ' 1370 $in = unpack("N*", $in); 1371 $l = $in[1]; 1372 $r = $in[2]; 1373 $in = unpack("N*", 1374 ($shuffleip[ $r & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") | 1375 ($shuffleip[($r >> 8) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") | 1376 ($shuffleip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") | 1377 ($shuffleip[($r >> 24) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") | 1378 ($shuffleip[ $l & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") | 1379 ($shuffleip[($l >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") | 1380 ($shuffleip[($l >> 16) & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") | 1381 ($shuffleip[($l >> 24) & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01") 1382 ); 1383 ' . /* Extract L0 and R0 */ ' 1384 $l = $in[1]; 1385 $r = $in[2]; 1386 '; 1387 1388 $l = '$l'; 1389 $r = '$r'; 1390 1391 // Perform DES or 3DES. 1392 for ($ki = -1, $des_round = 0; $des_round < $des_rounds; ++$des_round) { 1393 // Perform the 16 steps. 1394 for ($i = 0; $i < 16; ++$i) { 1395 // start of "the Feistel (F) function" - see the following URL: 1396 // http://en.wikipedia.org/wiki/Image:Data_Encryption_Standard_InfoBox_Diagram.png 1397 // Merge key schedule. 1398 $crypt_block[$c].= ' 1399 $b1 = ((' . $r . ' >> 3) & 0x1FFFFFFF) ^ (' . $r . ' << 29) ^ ' . $k[$c][++$ki] . '; 1400 $b2 = ((' . $r . ' >> 31) & 0x00000001) ^ (' . $r . ' << 1) ^ ' . $k[$c][++$ki] . ';' . 1401 /* S-box indexing. */ 1402 $l . ' = $sbox1[($b1 >> 24) & 0x3F] ^ $sbox2[($b2 >> 24) & 0x3F] ^ 1403 $sbox3[($b1 >> 16) & 0x3F] ^ $sbox4[($b2 >> 16) & 0x3F] ^ 1404 $sbox5[($b1 >> 8) & 0x3F] ^ $sbox6[($b2 >> 8) & 0x3F] ^ 1405 $sbox7[ $b1 & 0x3F] ^ $sbox8[ $b2 & 0x3F] ^ ' . $l . '; 1406 '; 1407 // end of "the Feistel (F) function" 1408 1409 // swap L & R 1410 list($l, $r) = array($r, $l); 1411 } 1412 list($l, $r) = array($r, $l); 1413 } 1414 1415 // Perform the inverse IP permutation. 1416 $crypt_block[$c].= '$in = 1417 ($shuffleinvip[($l >> 24) & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") | 1418 ($shuffleinvip[($r >> 24) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") | 1419 ($shuffleinvip[($l >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") | 1420 ($shuffleinvip[($r >> 16) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") | 1421 ($shuffleinvip[($l >> 8) & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") | 1422 ($shuffleinvip[($r >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") | 1423 ($shuffleinvip[ $l & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") | 1424 ($shuffleinvip[ $r & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01"); 1425 '; 1426 } 1427 1428 // Creates the inline-crypt function 1429 $lambda_functions[$code_hash] = $this->_createInlineCryptFunction( 1430 array( 1431 'init_crypt' => $init_crypt, 1432 'init_encrypt' => $init_encrypt, 1433 'init_decrypt' => $init_decrypt, 1434 'encrypt_block' => $crypt_block[self::ENCRYPT], 1435 'decrypt_block' => $crypt_block[self::DECRYPT] 1436 ) 1437 ); 1438 } 1439 1440 // Set the inline-crypt function as callback in: $this->inline_crypt 1441 $this->inline_crypt = $lambda_functions[$code_hash]; 1442 } 1443} 1444
