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 \phpseclib3\Crypt\DES('ctr'); 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 phpseclib3\Crypt; 44 45use phpseclib3\Crypt\Common\BlockCipher; 46use phpseclib3\Exception\BadModeException; 47 48/** 49 * Pure-PHP implementation of DES. 50 * 51 * @package DES 52 * @author Jim Wigginton <terrafrost@php.net> 53 * @access public 54 */ 55class DES extends BlockCipher 56{ 57 /** 58 * Contains $keys[self::ENCRYPT] 59 * 60 * @access private 61 * @see \phpseclib3\Crypt\DES::setupKey() 62 * @see \phpseclib3\Crypt\DES::processBlock() 63 */ 64 const ENCRYPT = 0; 65 /** 66 * Contains $keys[self::DECRYPT] 67 * 68 * @access private 69 * @see \phpseclib3\Crypt\DES::setupKey() 70 * @see \phpseclib3\Crypt\DES::processBlock() 71 */ 72 const DECRYPT = 1; 73 74 /** 75 * Block Length of the cipher 76 * 77 * @see \phpseclib3\Crypt\Common\SymmetricKey::block_size 78 * @var int 79 * @access private 80 */ 81 protected $block_size = 8; 82 83 /** 84 * Key Length (in bytes) 85 * 86 * @see \phpseclib3\Crypt\Common\SymmetricKey::setKeyLength() 87 * @var int 88 * @access private 89 */ 90 protected $key_length = 8; 91 92 /** 93 * The mcrypt specific name of the cipher 94 * 95 * @see \phpseclib3\Crypt\Common\SymmetricKey::cipher_name_mcrypt 96 * @var string 97 * @access private 98 */ 99 protected $cipher_name_mcrypt = 'des'; 100 101 /** 102 * The OpenSSL names of the cipher / modes 103 * 104 * @see \phpseclib3\Crypt\Common\SymmetricKey::openssl_mode_names 105 * @var array 106 * @access private 107 */ 108 protected $openssl_mode_names = [ 109 self::MODE_ECB => 'des-ecb', 110 self::MODE_CBC => 'des-cbc', 111 self::MODE_CFB => 'des-cfb', 112 self::MODE_OFB => 'des-ofb' 113 // self::MODE_CTR is undefined for DES 114 ]; 115 116 /** 117 * Optimizing value while CFB-encrypting 118 * 119 * @see \phpseclib3\Crypt\Common\SymmetricKey::cfb_init_len 120 * @var int 121 * @access private 122 */ 123 protected $cfb_init_len = 500; 124 125 /** 126 * Switch for DES/3DES encryption 127 * 128 * Used only if $engine == self::ENGINE_INTERNAL 129 * 130 * @see self::setupKey() 131 * @see self::processBlock() 132 * @var int 133 * @access private 134 */ 135 protected $des_rounds = 1; 136 137 /** 138 * max possible size of $key 139 * 140 * @see self::setKey() 141 * @var string 142 * @access private 143 */ 144 protected $key_length_max = 8; 145 146 /** 147 * The Key Schedule 148 * 149 * @see self::setupKey() 150 * @var array 151 * @access private 152 */ 153 private $keys; 154 155 /** 156 * Shuffle table. 157 * 158 * For each byte value index, the entry holds an 8-byte string 159 * with each byte containing all bits in the same state as the 160 * corresponding bit in the index value. 161 * 162 * @see self::processBlock() 163 * @see self::setupKey() 164 * @var array 165 * @access private 166 */ 167 protected static $shuffle = [ 168 "\x00\x00\x00\x00\x00\x00\x00\x00", "\x00\x00\x00\x00\x00\x00\x00\xFF", 169 "\x00\x00\x00\x00\x00\x00\xFF\x00", "\x00\x00\x00\x00\x00\x00\xFF\xFF", 170 "\x00\x00\x00\x00\x00\xFF\x00\x00", "\x00\x00\x00\x00\x00\xFF\x00\xFF", 171 "\x00\x00\x00\x00\x00\xFF\xFF\x00", "\x00\x00\x00\x00\x00\xFF\xFF\xFF", 172 "\x00\x00\x00\x00\xFF\x00\x00\x00", "\x00\x00\x00\x00\xFF\x00\x00\xFF", 173 "\x00\x00\x00\x00\xFF\x00\xFF\x00", "\x00\x00\x00\x00\xFF\x00\xFF\xFF", 174 "\x00\x00\x00\x00\xFF\xFF\x00\x00", "\x00\x00\x00\x00\xFF\xFF\x00\xFF", 175 "\x00\x00\x00\x00\xFF\xFF\xFF\x00", "\x00\x00\x00\x00\xFF\xFF\xFF\xFF", 176 "\x00\x00\x00\xFF\x00\x00\x00\x00", "\x00\x00\x00\xFF\x00\x00\x00\xFF", 177 "\x00\x00\x00\xFF\x00\x00\xFF\x00", "\x00\x00\x00\xFF\x00\x00\xFF\xFF", 178 "\x00\x00\x00\xFF\x00\xFF\x00\x00", "\x00\x00\x00\xFF\x00\xFF\x00\xFF", 179 "\x00\x00\x00\xFF\x00\xFF\xFF\x00", "\x00\x00\x00\xFF\x00\xFF\xFF\xFF", 180 "\x00\x00\x00\xFF\xFF\x00\x00\x00", "\x00\x00\x00\xFF\xFF\x00\x00\xFF", 181 "\x00\x00\x00\xFF\xFF\x00\xFF\x00", "\x00\x00\x00\xFF\xFF\x00\xFF\xFF", 182 "\x00\x00\x00\xFF\xFF\xFF\x00\x00", "\x00\x00\x00\xFF\xFF\xFF\x00\xFF", 183 "\x00\x00\x00\xFF\xFF\xFF\xFF\x00", "\x00\x00\x00\xFF\xFF\xFF\xFF\xFF", 184 "\x00\x00\xFF\x00\x00\x00\x00\x00", "\x00\x00\xFF\x00\x00\x00\x00\xFF", 185 "\x00\x00\xFF\x00\x00\x00\xFF\x00", "\x00\x00\xFF\x00\x00\x00\xFF\xFF", 186 "\x00\x00\xFF\x00\x00\xFF\x00\x00", "\x00\x00\xFF\x00\x00\xFF\x00\xFF", 187 "\x00\x00\xFF\x00\x00\xFF\xFF\x00", "\x00\x00\xFF\x00\x00\xFF\xFF\xFF", 188 "\x00\x00\xFF\x00\xFF\x00\x00\x00", "\x00\x00\xFF\x00\xFF\x00\x00\xFF", 189 "\x00\x00\xFF\x00\xFF\x00\xFF\x00", "\x00\x00\xFF\x00\xFF\x00\xFF\xFF", 190 "\x00\x00\xFF\x00\xFF\xFF\x00\x00", "\x00\x00\xFF\x00\xFF\xFF\x00\xFF", 191 "\x00\x00\xFF\x00\xFF\xFF\xFF\x00", "\x00\x00\xFF\x00\xFF\xFF\xFF\xFF", 192 "\x00\x00\xFF\xFF\x00\x00\x00\x00", "\x00\x00\xFF\xFF\x00\x00\x00\xFF", 193 "\x00\x00\xFF\xFF\x00\x00\xFF\x00", "\x00\x00\xFF\xFF\x00\x00\xFF\xFF", 194 "\x00\x00\xFF\xFF\x00\xFF\x00\x00", "\x00\x00\xFF\xFF\x00\xFF\x00\xFF", 195 "\x00\x00\xFF\xFF\x00\xFF\xFF\x00", "\x00\x00\xFF\xFF\x00\xFF\xFF\xFF", 196 "\x00\x00\xFF\xFF\xFF\x00\x00\x00", "\x00\x00\xFF\xFF\xFF\x00\x00\xFF", 197 "\x00\x00\xFF\xFF\xFF\x00\xFF\x00", "\x00\x00\xFF\xFF\xFF\x00\xFF\xFF", 198 "\x00\x00\xFF\xFF\xFF\xFF\x00\x00", "\x00\x00\xFF\xFF\xFF\xFF\x00\xFF", 199 "\x00\x00\xFF\xFF\xFF\xFF\xFF\x00", "\x00\x00\xFF\xFF\xFF\xFF\xFF\xFF", 200 "\x00\xFF\x00\x00\x00\x00\x00\x00", "\x00\xFF\x00\x00\x00\x00\x00\xFF", 201 "\x00\xFF\x00\x00\x00\x00\xFF\x00", "\x00\xFF\x00\x00\x00\x00\xFF\xFF", 202 "\x00\xFF\x00\x00\x00\xFF\x00\x00", "\x00\xFF\x00\x00\x00\xFF\x00\xFF", 203 "\x00\xFF\x00\x00\x00\xFF\xFF\x00", "\x00\xFF\x00\x00\x00\xFF\xFF\xFF", 204 "\x00\xFF\x00\x00\xFF\x00\x00\x00", "\x00\xFF\x00\x00\xFF\x00\x00\xFF", 205 "\x00\xFF\x00\x00\xFF\x00\xFF\x00", "\x00\xFF\x00\x00\xFF\x00\xFF\xFF", 206 "\x00\xFF\x00\x00\xFF\xFF\x00\x00", "\x00\xFF\x00\x00\xFF\xFF\x00\xFF", 207 "\x00\xFF\x00\x00\xFF\xFF\xFF\x00", "\x00\xFF\x00\x00\xFF\xFF\xFF\xFF", 208 "\x00\xFF\x00\xFF\x00\x00\x00\x00", "\x00\xFF\x00\xFF\x00\x00\x00\xFF", 209 "\x00\xFF\x00\xFF\x00\x00\xFF\x00", "\x00\xFF\x00\xFF\x00\x00\xFF\xFF", 210 "\x00\xFF\x00\xFF\x00\xFF\x00\x00", "\x00\xFF\x00\xFF\x00\xFF\x00\xFF", 211 "\x00\xFF\x00\xFF\x00\xFF\xFF\x00", "\x00\xFF\x00\xFF\x00\xFF\xFF\xFF", 212 "\x00\xFF\x00\xFF\xFF\x00\x00\x00", "\x00\xFF\x00\xFF\xFF\x00\x00\xFF", 213 "\x00\xFF\x00\xFF\xFF\x00\xFF\x00", "\x00\xFF\x00\xFF\xFF\x00\xFF\xFF", 214 "\x00\xFF\x00\xFF\xFF\xFF\x00\x00", "\x00\xFF\x00\xFF\xFF\xFF\x00\xFF", 215 "\x00\xFF\x00\xFF\xFF\xFF\xFF\x00", "\x00\xFF\x00\xFF\xFF\xFF\xFF\xFF", 216 "\x00\xFF\xFF\x00\x00\x00\x00\x00", "\x00\xFF\xFF\x00\x00\x00\x00\xFF", 217 "\x00\xFF\xFF\x00\x00\x00\xFF\x00", "\x00\xFF\xFF\x00\x00\x00\xFF\xFF", 218 "\x00\xFF\xFF\x00\x00\xFF\x00\x00", "\x00\xFF\xFF\x00\x00\xFF\x00\xFF", 219 "\x00\xFF\xFF\x00\x00\xFF\xFF\x00", "\x00\xFF\xFF\x00\x00\xFF\xFF\xFF", 220 "\x00\xFF\xFF\x00\xFF\x00\x00\x00", "\x00\xFF\xFF\x00\xFF\x00\x00\xFF", 221 "\x00\xFF\xFF\x00\xFF\x00\xFF\x00", "\x00\xFF\xFF\x00\xFF\x00\xFF\xFF", 222 "\x00\xFF\xFF\x00\xFF\xFF\x00\x00", "\x00\xFF\xFF\x00\xFF\xFF\x00\xFF", 223 "\x00\xFF\xFF\x00\xFF\xFF\xFF\x00", "\x00\xFF\xFF\x00\xFF\xFF\xFF\xFF", 224 "\x00\xFF\xFF\xFF\x00\x00\x00\x00", "\x00\xFF\xFF\xFF\x00\x00\x00\xFF", 225 "\x00\xFF\xFF\xFF\x00\x00\xFF\x00", "\x00\xFF\xFF\xFF\x00\x00\xFF\xFF", 226 "\x00\xFF\xFF\xFF\x00\xFF\x00\x00", "\x00\xFF\xFF\xFF\x00\xFF\x00\xFF", 227 "\x00\xFF\xFF\xFF\x00\xFF\xFF\x00", "\x00\xFF\xFF\xFF\x00\xFF\xFF\xFF", 228 "\x00\xFF\xFF\xFF\xFF\x00\x00\x00", "\x00\xFF\xFF\xFF\xFF\x00\x00\xFF", 229 "\x00\xFF\xFF\xFF\xFF\x00\xFF\x00", "\x00\xFF\xFF\xFF\xFF\x00\xFF\xFF", 230 "\x00\xFF\xFF\xFF\xFF\xFF\x00\x00", "\x00\xFF\xFF\xFF\xFF\xFF\x00\xFF", 231 "\x00\xFF\xFF\xFF\xFF\xFF\xFF\x00", "\x00\xFF\xFF\xFF\xFF\xFF\xFF\xFF", 232 "\xFF\x00\x00\x00\x00\x00\x00\x00", "\xFF\x00\x00\x00\x00\x00\x00\xFF", 233 "\xFF\x00\x00\x00\x00\x00\xFF\x00", "\xFF\x00\x00\x00\x00\x00\xFF\xFF", 234 "\xFF\x00\x00\x00\x00\xFF\x00\x00", "\xFF\x00\x00\x00\x00\xFF\x00\xFF", 235 "\xFF\x00\x00\x00\x00\xFF\xFF\x00", "\xFF\x00\x00\x00\x00\xFF\xFF\xFF", 236 "\xFF\x00\x00\x00\xFF\x00\x00\x00", "\xFF\x00\x00\x00\xFF\x00\x00\xFF", 237 "\xFF\x00\x00\x00\xFF\x00\xFF\x00", "\xFF\x00\x00\x00\xFF\x00\xFF\xFF", 238 "\xFF\x00\x00\x00\xFF\xFF\x00\x00", "\xFF\x00\x00\x00\xFF\xFF\x00\xFF", 239 "\xFF\x00\x00\x00\xFF\xFF\xFF\x00", "\xFF\x00\x00\x00\xFF\xFF\xFF\xFF", 240 "\xFF\x00\x00\xFF\x00\x00\x00\x00", "\xFF\x00\x00\xFF\x00\x00\x00\xFF", 241 "\xFF\x00\x00\xFF\x00\x00\xFF\x00", "\xFF\x00\x00\xFF\x00\x00\xFF\xFF", 242 "\xFF\x00\x00\xFF\x00\xFF\x00\x00", "\xFF\x00\x00\xFF\x00\xFF\x00\xFF", 243 "\xFF\x00\x00\xFF\x00\xFF\xFF\x00", "\xFF\x00\x00\xFF\x00\xFF\xFF\xFF", 244 "\xFF\x00\x00\xFF\xFF\x00\x00\x00", "\xFF\x00\x00\xFF\xFF\x00\x00\xFF", 245 "\xFF\x00\x00\xFF\xFF\x00\xFF\x00", "\xFF\x00\x00\xFF\xFF\x00\xFF\xFF", 246 "\xFF\x00\x00\xFF\xFF\xFF\x00\x00", "\xFF\x00\x00\xFF\xFF\xFF\x00\xFF", 247 "\xFF\x00\x00\xFF\xFF\xFF\xFF\x00", "\xFF\x00\x00\xFF\xFF\xFF\xFF\xFF", 248 "\xFF\x00\xFF\x00\x00\x00\x00\x00", "\xFF\x00\xFF\x00\x00\x00\x00\xFF", 249 "\xFF\x00\xFF\x00\x00\x00\xFF\x00", "\xFF\x00\xFF\x00\x00\x00\xFF\xFF", 250 "\xFF\x00\xFF\x00\x00\xFF\x00\x00", "\xFF\x00\xFF\x00\x00\xFF\x00\xFF", 251 "\xFF\x00\xFF\x00\x00\xFF\xFF\x00", "\xFF\x00\xFF\x00\x00\xFF\xFF\xFF", 252 "\xFF\x00\xFF\x00\xFF\x00\x00\x00", "\xFF\x00\xFF\x00\xFF\x00\x00\xFF", 253 "\xFF\x00\xFF\x00\xFF\x00\xFF\x00", "\xFF\x00\xFF\x00\xFF\x00\xFF\xFF", 254 "\xFF\x00\xFF\x00\xFF\xFF\x00\x00", "\xFF\x00\xFF\x00\xFF\xFF\x00\xFF", 255 "\xFF\x00\xFF\x00\xFF\xFF\xFF\x00", "\xFF\x00\xFF\x00\xFF\xFF\xFF\xFF", 256 "\xFF\x00\xFF\xFF\x00\x00\x00\x00", "\xFF\x00\xFF\xFF\x00\x00\x00\xFF", 257 "\xFF\x00\xFF\xFF\x00\x00\xFF\x00", "\xFF\x00\xFF\xFF\x00\x00\xFF\xFF", 258 "\xFF\x00\xFF\xFF\x00\xFF\x00\x00", "\xFF\x00\xFF\xFF\x00\xFF\x00\xFF", 259 "\xFF\x00\xFF\xFF\x00\xFF\xFF\x00", "\xFF\x00\xFF\xFF\x00\xFF\xFF\xFF", 260 "\xFF\x00\xFF\xFF\xFF\x00\x00\x00", "\xFF\x00\xFF\xFF\xFF\x00\x00\xFF", 261 "\xFF\x00\xFF\xFF\xFF\x00\xFF\x00", "\xFF\x00\xFF\xFF\xFF\x00\xFF\xFF", 262 "\xFF\x00\xFF\xFF\xFF\xFF\x00\x00", "\xFF\x00\xFF\xFF\xFF\xFF\x00\xFF", 263 "\xFF\x00\xFF\xFF\xFF\xFF\xFF\x00", "\xFF\x00\xFF\xFF\xFF\xFF\xFF\xFF", 264 "\xFF\xFF\x00\x00\x00\x00\x00\x00", "\xFF\xFF\x00\x00\x00\x00\x00\xFF", 265 "\xFF\xFF\x00\x00\x00\x00\xFF\x00", "\xFF\xFF\x00\x00\x00\x00\xFF\xFF", 266 "\xFF\xFF\x00\x00\x00\xFF\x00\x00", "\xFF\xFF\x00\x00\x00\xFF\x00\xFF", 267 "\xFF\xFF\x00\x00\x00\xFF\xFF\x00", "\xFF\xFF\x00\x00\x00\xFF\xFF\xFF", 268 "\xFF\xFF\x00\x00\xFF\x00\x00\x00", "\xFF\xFF\x00\x00\xFF\x00\x00\xFF", 269 "\xFF\xFF\x00\x00\xFF\x00\xFF\x00", "\xFF\xFF\x00\x00\xFF\x00\xFF\xFF", 270 "\xFF\xFF\x00\x00\xFF\xFF\x00\x00", "\xFF\xFF\x00\x00\xFF\xFF\x00\xFF", 271 "\xFF\xFF\x00\x00\xFF\xFF\xFF\x00", "\xFF\xFF\x00\x00\xFF\xFF\xFF\xFF", 272 "\xFF\xFF\x00\xFF\x00\x00\x00\x00", "\xFF\xFF\x00\xFF\x00\x00\x00\xFF", 273 "\xFF\xFF\x00\xFF\x00\x00\xFF\x00", "\xFF\xFF\x00\xFF\x00\x00\xFF\xFF", 274 "\xFF\xFF\x00\xFF\x00\xFF\x00\x00", "\xFF\xFF\x00\xFF\x00\xFF\x00\xFF", 275 "\xFF\xFF\x00\xFF\x00\xFF\xFF\x00", "\xFF\xFF\x00\xFF\x00\xFF\xFF\xFF", 276 "\xFF\xFF\x00\xFF\xFF\x00\x00\x00", "\xFF\xFF\x00\xFF\xFF\x00\x00\xFF", 277 "\xFF\xFF\x00\xFF\xFF\x00\xFF\x00", "\xFF\xFF\x00\xFF\xFF\x00\xFF\xFF", 278 "\xFF\xFF\x00\xFF\xFF\xFF\x00\x00", "\xFF\xFF\x00\xFF\xFF\xFF\x00\xFF", 279 "\xFF\xFF\x00\xFF\xFF\xFF\xFF\x00", "\xFF\xFF\x00\xFF\xFF\xFF\xFF\xFF", 280 "\xFF\xFF\xFF\x00\x00\x00\x00\x00", "\xFF\xFF\xFF\x00\x00\x00\x00\xFF", 281 "\xFF\xFF\xFF\x00\x00\x00\xFF\x00", "\xFF\xFF\xFF\x00\x00\x00\xFF\xFF", 282 "\xFF\xFF\xFF\x00\x00\xFF\x00\x00", "\xFF\xFF\xFF\x00\x00\xFF\x00\xFF", 283 "\xFF\xFF\xFF\x00\x00\xFF\xFF\x00", "\xFF\xFF\xFF\x00\x00\xFF\xFF\xFF", 284 "\xFF\xFF\xFF\x00\xFF\x00\x00\x00", "\xFF\xFF\xFF\x00\xFF\x00\x00\xFF", 285 "\xFF\xFF\xFF\x00\xFF\x00\xFF\x00", "\xFF\xFF\xFF\x00\xFF\x00\xFF\xFF", 286 "\xFF\xFF\xFF\x00\xFF\xFF\x00\x00", "\xFF\xFF\xFF\x00\xFF\xFF\x00\xFF", 287 "\xFF\xFF\xFF\x00\xFF\xFF\xFF\x00", "\xFF\xFF\xFF\x00\xFF\xFF\xFF\xFF", 288 "\xFF\xFF\xFF\xFF\x00\x00\x00\x00", "\xFF\xFF\xFF\xFF\x00\x00\x00\xFF", 289 "\xFF\xFF\xFF\xFF\x00\x00\xFF\x00", "\xFF\xFF\xFF\xFF\x00\x00\xFF\xFF", 290 "\xFF\xFF\xFF\xFF\x00\xFF\x00\x00", "\xFF\xFF\xFF\xFF\x00\xFF\x00\xFF", 291 "\xFF\xFF\xFF\xFF\x00\xFF\xFF\x00", "\xFF\xFF\xFF\xFF\x00\xFF\xFF\xFF", 292 "\xFF\xFF\xFF\xFF\xFF\x00\x00\x00", "\xFF\xFF\xFF\xFF\xFF\x00\x00\xFF", 293 "\xFF\xFF\xFF\xFF\xFF\x00\xFF\x00", "\xFF\xFF\xFF\xFF\xFF\x00\xFF\xFF", 294 "\xFF\xFF\xFF\xFF\xFF\xFF\x00\x00", "\xFF\xFF\xFF\xFF\xFF\xFF\x00\xFF", 295 "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x00", "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF" 296 ]; 297 298 /** 299 * IP mapping helper table. 300 * 301 * Indexing this table with each source byte performs the initial bit permutation. 302 * 303 * @var array 304 * @access private 305 */ 306 protected static $ipmap = [ 307 0x00, 0x10, 0x01, 0x11, 0x20, 0x30, 0x21, 0x31, 308 0x02, 0x12, 0x03, 0x13, 0x22, 0x32, 0x23, 0x33, 309 0x40, 0x50, 0x41, 0x51, 0x60, 0x70, 0x61, 0x71, 310 0x42, 0x52, 0x43, 0x53, 0x62, 0x72, 0x63, 0x73, 311 0x04, 0x14, 0x05, 0x15, 0x24, 0x34, 0x25, 0x35, 312 0x06, 0x16, 0x07, 0x17, 0x26, 0x36, 0x27, 0x37, 313 0x44, 0x54, 0x45, 0x55, 0x64, 0x74, 0x65, 0x75, 314 0x46, 0x56, 0x47, 0x57, 0x66, 0x76, 0x67, 0x77, 315 0x80, 0x90, 0x81, 0x91, 0xA0, 0xB0, 0xA1, 0xB1, 316 0x82, 0x92, 0x83, 0x93, 0xA2, 0xB2, 0xA3, 0xB3, 317 0xC0, 0xD0, 0xC1, 0xD1, 0xE0, 0xF0, 0xE1, 0xF1, 318 0xC2, 0xD2, 0xC3, 0xD3, 0xE2, 0xF2, 0xE3, 0xF3, 319 0x84, 0x94, 0x85, 0x95, 0xA4, 0xB4, 0xA5, 0xB5, 320 0x86, 0x96, 0x87, 0x97, 0xA6, 0xB6, 0xA7, 0xB7, 321 0xC4, 0xD4, 0xC5, 0xD5, 0xE4, 0xF4, 0xE5, 0xF5, 322 0xC6, 0xD6, 0xC7, 0xD7, 0xE6, 0xF6, 0xE7, 0xF7, 323 0x08, 0x18, 0x09, 0x19, 0x28, 0x38, 0x29, 0x39, 324 0x0A, 0x1A, 0x0B, 0x1B, 0x2A, 0x3A, 0x2B, 0x3B, 325 0x48, 0x58, 0x49, 0x59, 0x68, 0x78, 0x69, 0x79, 326 0x4A, 0x5A, 0x4B, 0x5B, 0x6A, 0x7A, 0x6B, 0x7B, 327 0x0C, 0x1C, 0x0D, 0x1D, 0x2C, 0x3C, 0x2D, 0x3D, 328 0x0E, 0x1E, 0x0F, 0x1F, 0x2E, 0x3E, 0x2F, 0x3F, 329 0x4C, 0x5C, 0x4D, 0x5D, 0x6C, 0x7C, 0x6D, 0x7D, 330 0x4E, 0x5E, 0x4F, 0x5F, 0x6E, 0x7E, 0x6F, 0x7F, 331 0x88, 0x98, 0x89, 0x99, 0xA8, 0xB8, 0xA9, 0xB9, 332 0x8A, 0x9A, 0x8B, 0x9B, 0xAA, 0xBA, 0xAB, 0xBB, 333 0xC8, 0xD8, 0xC9, 0xD9, 0xE8, 0xF8, 0xE9, 0xF9, 334 0xCA, 0xDA, 0xCB, 0xDB, 0xEA, 0xFA, 0xEB, 0xFB, 335 0x8C, 0x9C, 0x8D, 0x9D, 0xAC, 0xBC, 0xAD, 0xBD, 336 0x8E, 0x9E, 0x8F, 0x9F, 0xAE, 0xBE, 0xAF, 0xBF, 337 0xCC, 0xDC, 0xCD, 0xDD, 0xEC, 0xFC, 0xED, 0xFD, 338 0xCE, 0xDE, 0xCF, 0xDF, 0xEE, 0xFE, 0xEF, 0xFF 339 ]; 340 341 /** 342 * Inverse IP mapping helper table. 343 * Indexing this table with a byte value reverses the bit order. 344 * 345 * @var array 346 * @access private 347 */ 348 protected static $invipmap = [ 349 0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0, 350 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0, 351 0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8, 352 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8, 353 0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4, 354 0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4, 355 0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC, 356 0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC, 357 0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2, 358 0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2, 359 0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA, 360 0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA, 361 0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6, 362 0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6, 363 0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE, 364 0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE, 365 0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1, 366 0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1, 367 0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9, 368 0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9, 369 0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5, 370 0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5, 371 0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED, 372 0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD, 373 0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3, 374 0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3, 375 0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB, 376 0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB, 377 0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7, 378 0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7, 379 0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF, 380 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF 381 ]; 382 383 /** 384 * Pre-permuted S-box1 385 * 386 * Each box ($sbox1-$sbox8) has been vectorized, then each value pre-permuted using the 387 * P table: concatenation can then be replaced by exclusive ORs. 388 * 389 * @var array 390 * @access private 391 */ 392 protected static $sbox1 = [ 393 0x00808200, 0x00000000, 0x00008000, 0x00808202, 394 0x00808002, 0x00008202, 0x00000002, 0x00008000, 395 0x00000200, 0x00808200, 0x00808202, 0x00000200, 396 0x00800202, 0x00808002, 0x00800000, 0x00000002, 397 0x00000202, 0x00800200, 0x00800200, 0x00008200, 398 0x00008200, 0x00808000, 0x00808000, 0x00800202, 399 0x00008002, 0x00800002, 0x00800002, 0x00008002, 400 0x00000000, 0x00000202, 0x00008202, 0x00800000, 401 0x00008000, 0x00808202, 0x00000002, 0x00808000, 402 0x00808200, 0x00800000, 0x00800000, 0x00000200, 403 0x00808002, 0x00008000, 0x00008200, 0x00800002, 404 0x00000200, 0x00000002, 0x00800202, 0x00008202, 405 0x00808202, 0x00008002, 0x00808000, 0x00800202, 406 0x00800002, 0x00000202, 0x00008202, 0x00808200, 407 0x00000202, 0x00800200, 0x00800200, 0x00000000, 408 0x00008002, 0x00008200, 0x00000000, 0x00808002 409 ]; 410 411 /** 412 * Pre-permuted S-box2 413 * 414 * @var array 415 * @access private 416 */ 417 protected static $sbox2 = [ 418 0x40084010, 0x40004000, 0x00004000, 0x00084010, 419 0x00080000, 0x00000010, 0x40080010, 0x40004010, 420 0x40000010, 0x40084010, 0x40084000, 0x40000000, 421 0x40004000, 0x00080000, 0x00000010, 0x40080010, 422 0x00084000, 0x00080010, 0x40004010, 0x00000000, 423 0x40000000, 0x00004000, 0x00084010, 0x40080000, 424 0x00080010, 0x40000010, 0x00000000, 0x00084000, 425 0x00004010, 0x40084000, 0x40080000, 0x00004010, 426 0x00000000, 0x00084010, 0x40080010, 0x00080000, 427 0x40004010, 0x40080000, 0x40084000, 0x00004000, 428 0x40080000, 0x40004000, 0x00000010, 0x40084010, 429 0x00084010, 0x00000010, 0x00004000, 0x40000000, 430 0x00004010, 0x40084000, 0x00080000, 0x40000010, 431 0x00080010, 0x40004010, 0x40000010, 0x00080010, 432 0x00084000, 0x00000000, 0x40004000, 0x00004010, 433 0x40000000, 0x40080010, 0x40084010, 0x00084000 434 ]; 435 436 /** 437 * Pre-permuted S-box3 438 * 439 * @var array 440 * @access private 441 */ 442 protected static $sbox3 = [ 443 0x00000104, 0x04010100, 0x00000000, 0x04010004, 444 0x04000100, 0x00000000, 0x00010104, 0x04000100, 445 0x00010004, 0x04000004, 0x04000004, 0x00010000, 446 0x04010104, 0x00010004, 0x04010000, 0x00000104, 447 0x04000000, 0x00000004, 0x04010100, 0x00000100, 448 0x00010100, 0x04010000, 0x04010004, 0x00010104, 449 0x04000104, 0x00010100, 0x00010000, 0x04000104, 450 0x00000004, 0x04010104, 0x00000100, 0x04000000, 451 0x04010100, 0x04000000, 0x00010004, 0x00000104, 452 0x00010000, 0x04010100, 0x04000100, 0x00000000, 453 0x00000100, 0x00010004, 0x04010104, 0x04000100, 454 0x04000004, 0x00000100, 0x00000000, 0x04010004, 455 0x04000104, 0x00010000, 0x04000000, 0x04010104, 456 0x00000004, 0x00010104, 0x00010100, 0x04000004, 457 0x04010000, 0x04000104, 0x00000104, 0x04010000, 458 0x00010104, 0x00000004, 0x04010004, 0x00010100 459 ]; 460 461 /** 462 * Pre-permuted S-box4 463 * 464 * @var array 465 * @access private 466 */ 467 protected static $sbox4 = [ 468 0x80401000, 0x80001040, 0x80001040, 0x00000040, 469 0x00401040, 0x80400040, 0x80400000, 0x80001000, 470 0x00000000, 0x00401000, 0x00401000, 0x80401040, 471 0x80000040, 0x00000000, 0x00400040, 0x80400000, 472 0x80000000, 0x00001000, 0x00400000, 0x80401000, 473 0x00000040, 0x00400000, 0x80001000, 0x00001040, 474 0x80400040, 0x80000000, 0x00001040, 0x00400040, 475 0x00001000, 0x00401040, 0x80401040, 0x80000040, 476 0x00400040, 0x80400000, 0x00401000, 0x80401040, 477 0x80000040, 0x00000000, 0x00000000, 0x00401000, 478 0x00001040, 0x00400040, 0x80400040, 0x80000000, 479 0x80401000, 0x80001040, 0x80001040, 0x00000040, 480 0x80401040, 0x80000040, 0x80000000, 0x00001000, 481 0x80400000, 0x80001000, 0x00401040, 0x80400040, 482 0x80001000, 0x00001040, 0x00400000, 0x80401000, 483 0x00000040, 0x00400000, 0x00001000, 0x00401040 484 ]; 485 486 /** 487 * Pre-permuted S-box5 488 * 489 * @var array 490 * @access private 491 */ 492 protected static $sbox5 = [ 493 0x00000080, 0x01040080, 0x01040000, 0x21000080, 494 0x00040000, 0x00000080, 0x20000000, 0x01040000, 495 0x20040080, 0x00040000, 0x01000080, 0x20040080, 496 0x21000080, 0x21040000, 0x00040080, 0x20000000, 497 0x01000000, 0x20040000, 0x20040000, 0x00000000, 498 0x20000080, 0x21040080, 0x21040080, 0x01000080, 499 0x21040000, 0x20000080, 0x00000000, 0x21000000, 500 0x01040080, 0x01000000, 0x21000000, 0x00040080, 501 0x00040000, 0x21000080, 0x00000080, 0x01000000, 502 0x20000000, 0x01040000, 0x21000080, 0x20040080, 503 0x01000080, 0x20000000, 0x21040000, 0x01040080, 504 0x20040080, 0x00000080, 0x01000000, 0x21040000, 505 0x21040080, 0x00040080, 0x21000000, 0x21040080, 506 0x01040000, 0x00000000, 0x20040000, 0x21000000, 507 0x00040080, 0x01000080, 0x20000080, 0x00040000, 508 0x00000000, 0x20040000, 0x01040080, 0x20000080 509 ]; 510 511 /** 512 * Pre-permuted S-box6 513 * 514 * @var array 515 * @access private 516 */ 517 protected static $sbox6 = [ 518 0x10000008, 0x10200000, 0x00002000, 0x10202008, 519 0x10200000, 0x00000008, 0x10202008, 0x00200000, 520 0x10002000, 0x00202008, 0x00200000, 0x10000008, 521 0x00200008, 0x10002000, 0x10000000, 0x00002008, 522 0x00000000, 0x00200008, 0x10002008, 0x00002000, 523 0x00202000, 0x10002008, 0x00000008, 0x10200008, 524 0x10200008, 0x00000000, 0x00202008, 0x10202000, 525 0x00002008, 0x00202000, 0x10202000, 0x10000000, 526 0x10002000, 0x00000008, 0x10200008, 0x00202000, 527 0x10202008, 0x00200000, 0x00002008, 0x10000008, 528 0x00200000, 0x10002000, 0x10000000, 0x00002008, 529 0x10000008, 0x10202008, 0x00202000, 0x10200000, 530 0x00202008, 0x10202000, 0x00000000, 0x10200008, 531 0x00000008, 0x00002000, 0x10200000, 0x00202008, 532 0x00002000, 0x00200008, 0x10002008, 0x00000000, 533 0x10202000, 0x10000000, 0x00200008, 0x10002008 534 ]; 535 536 /** 537 * Pre-permuted S-box7 538 * 539 * @var array 540 * @access private 541 */ 542 protected static $sbox7 = [ 543 0x00100000, 0x02100001, 0x02000401, 0x00000000, 544 0x00000400, 0x02000401, 0x00100401, 0x02100400, 545 0x02100401, 0x00100000, 0x00000000, 0x02000001, 546 0x00000001, 0x02000000, 0x02100001, 0x00000401, 547 0x02000400, 0x00100401, 0x00100001, 0x02000400, 548 0x02000001, 0x02100000, 0x02100400, 0x00100001, 549 0x02100000, 0x00000400, 0x00000401, 0x02100401, 550 0x00100400, 0x00000001, 0x02000000, 0x00100400, 551 0x02000000, 0x00100400, 0x00100000, 0x02000401, 552 0x02000401, 0x02100001, 0x02100001, 0x00000001, 553 0x00100001, 0x02000000, 0x02000400, 0x00100000, 554 0x02100400, 0x00000401, 0x00100401, 0x02100400, 555 0x00000401, 0x02000001, 0x02100401, 0x02100000, 556 0x00100400, 0x00000000, 0x00000001, 0x02100401, 557 0x00000000, 0x00100401, 0x02100000, 0x00000400, 558 0x02000001, 0x02000400, 0x00000400, 0x00100001 559 ]; 560 561 /** 562 * Pre-permuted S-box8 563 * 564 * @var array 565 * @access private 566 */ 567 protected static $sbox8 = [ 568 0x08000820, 0x00000800, 0x00020000, 0x08020820, 569 0x08000000, 0x08000820, 0x00000020, 0x08000000, 570 0x00020020, 0x08020000, 0x08020820, 0x00020800, 571 0x08020800, 0x00020820, 0x00000800, 0x00000020, 572 0x08020000, 0x08000020, 0x08000800, 0x00000820, 573 0x00020800, 0x00020020, 0x08020020, 0x08020800, 574 0x00000820, 0x00000000, 0x00000000, 0x08020020, 575 0x08000020, 0x08000800, 0x00020820, 0x00020000, 576 0x00020820, 0x00020000, 0x08020800, 0x00000800, 577 0x00000020, 0x08020020, 0x00000800, 0x00020820, 578 0x08000800, 0x00000020, 0x08000020, 0x08020000, 579 0x08020020, 0x08000000, 0x00020000, 0x08000820, 580 0x00000000, 0x08020820, 0x00020020, 0x08000020, 581 0x08020000, 0x08000800, 0x08000820, 0x00000000, 582 0x08020820, 0x00020800, 0x00020800, 0x00000820, 583 0x00000820, 0x00020020, 0x08000000, 0x08020800 584 ]; 585 586 /** 587 * Default Constructor. 588 * 589 * @param string $mode 590 * @access public 591 * @throws BadModeException if an invalid / unsupported mode is provided 592 */ 593 public function __construct($mode) 594 { 595 parent::__construct($mode); 596 597 if ($this->mode == self::MODE_STREAM) { 598 throw new BadModeException('Block ciphers cannot be ran in stream mode'); 599 } 600 } 601 602 /** 603 * Test for engine validity 604 * 605 * This is mainly just a wrapper to set things up for \phpseclib3\Crypt\Common\SymmetricKey::isValidEngine() 606 * 607 * @see \phpseclib3\Crypt\Common\SymmetricKey::isValidEngine() 608 * @param int $engine 609 * @access protected 610 * @return bool 611 */ 612 protected function isValidEngineHelper($engine) 613 { 614 if ($this->key_length_max == 8) { 615 if ($engine == self::ENGINE_OPENSSL) { 616 $this->cipher_name_openssl_ecb = 'des-ecb'; 617 $this->cipher_name_openssl = 'des-' . $this->openssl_translate_mode(); 618 } 619 } 620 621 return parent::isValidEngineHelper($engine); 622 } 623 624 /** 625 * Sets the key. 626 * 627 * Keys must be 64-bits long or 8 bytes long. 628 * 629 * DES also requires that every eighth bit be a parity bit, however, we'll ignore that. 630 * 631 * @see \phpseclib3\Crypt\Common\SymmetricKey::setKey() 632 * @access public 633 * @param string $key 634 */ 635 public function setKey($key) 636 { 637 if (!($this instanceof TripleDES) && strlen($key) != 8) { 638 throw new \LengthException('Key of size ' . strlen($key) . ' not supported by this algorithm. Only keys of size 8 are supported'); 639 } 640 641 // Sets the key 642 parent::setKey($key); 643 } 644 645 /** 646 * Encrypts a block 647 * 648 * @see \phpseclib3\Crypt\Common\SymmetricKey::encryptBlock() 649 * @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt() 650 * @see self::encrypt() 651 * @access private 652 * @param string $in 653 * @return string 654 */ 655 protected function encryptBlock($in) 656 { 657 return $this->processBlock($in, self::ENCRYPT); 658 } 659 660 /** 661 * Decrypts a block 662 * 663 * @see \phpseclib3\Crypt\Common\SymmetricKey::decryptBlock() 664 * @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt() 665 * @see self::decrypt() 666 * @access private 667 * @param string $in 668 * @return string 669 */ 670 protected function decryptBlock($in) 671 { 672 return $this->processBlock($in, self::DECRYPT); 673 } 674 675 /** 676 * Encrypts or decrypts a 64-bit block 677 * 678 * $mode should be either self::ENCRYPT or self::DECRYPT. See 679 * {@link http://en.wikipedia.org/wiki/Image:Feistel.png Feistel.png} to get a general 680 * idea of what this function does. 681 * 682 * @see self::encryptBlock() 683 * @see self::decryptBlock() 684 * @access private 685 * @param string $block 686 * @param int $mode 687 * @return string 688 */ 689 private function processBlock($block, $mode) 690 { 691 static $sbox1, $sbox2, $sbox3, $sbox4, $sbox5, $sbox6, $sbox7, $sbox8, $shuffleip, $shuffleinvip; 692 if (!$sbox1) { 693 $sbox1 = array_map('intval', self::$sbox1); 694 $sbox2 = array_map('intval', self::$sbox2); 695 $sbox3 = array_map('intval', self::$sbox3); 696 $sbox4 = array_map('intval', self::$sbox4); 697 $sbox5 = array_map('intval', self::$sbox5); 698 $sbox6 = array_map('intval', self::$sbox6); 699 $sbox7 = array_map('intval', self::$sbox7); 700 $sbox8 = array_map('intval', self::$sbox8); 701 /* Merge $shuffle with $[inv]ipmap */ 702 for ($i = 0; $i < 256; ++$i) { 703 $shuffleip[] = self::$shuffle[self::$ipmap[$i]]; 704 $shuffleinvip[] = self::$shuffle[self::$invipmap[$i]]; 705 } 706 } 707 708 $keys = $this->keys[$mode]; 709 $ki = -1; 710 711 // Do the initial IP permutation. 712 $t = unpack('Nl/Nr', $block); 713 list($l, $r) = [$t['l'], $t['r']]; 714 $block = ($shuffleip[ $r & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") | 715 ($shuffleip[($r >> 8) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") | 716 ($shuffleip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") | 717 ($shuffleip[($r >> 24) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") | 718 ($shuffleip[ $l & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") | 719 ($shuffleip[($l >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") | 720 ($shuffleip[($l >> 16) & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") | 721 ($shuffleip[($l >> 24) & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01"); 722 723 // Extract L0 and R0. 724 $t = unpack('Nl/Nr', $block); 725 list($l, $r) = [$t['l'], $t['r']]; 726 727 for ($des_round = 0; $des_round < $this->des_rounds; ++$des_round) { 728 // Perform the 16 steps. 729 for ($i = 0; $i < 16; $i++) { 730 // start of "the Feistel (F) function" - see the following URL: 731 // http://en.wikipedia.org/wiki/Image:Data_Encryption_Standard_InfoBox_Diagram.png 732 // Merge key schedule. 733 $b1 = (($r >> 3) & 0x1FFFFFFF) ^ ($r << 29) ^ $keys[++$ki]; 734 $b2 = (($r >> 31) & 0x00000001) ^ ($r << 1) ^ $keys[++$ki]; 735 736 // S-box indexing. 737 $t = $sbox1[($b1 >> 24) & 0x3F] ^ $sbox2[($b2 >> 24) & 0x3F] ^ 738 $sbox3[($b1 >> 16) & 0x3F] ^ $sbox4[($b2 >> 16) & 0x3F] ^ 739 $sbox5[($b1 >> 8) & 0x3F] ^ $sbox6[($b2 >> 8) & 0x3F] ^ 740 $sbox7[ $b1 & 0x3F] ^ $sbox8[ $b2 & 0x3F] ^ $l; 741 // end of "the Feistel (F) function" 742 743 $l = $r; 744 $r = $t; 745 } 746 747 // Last step should not permute L & R. 748 $t = $l; 749 $l = $r; 750 $r = $t; 751 } 752 753 // Perform the inverse IP permutation. 754 return ($shuffleinvip[($r >> 24) & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") | 755 ($shuffleinvip[($l >> 24) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") | 756 ($shuffleinvip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") | 757 ($shuffleinvip[($l >> 16) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") | 758 ($shuffleinvip[($r >> 8) & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") | 759 ($shuffleinvip[($l >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") | 760 ($shuffleinvip[ $r & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") | 761 ($shuffleinvip[ $l & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01"); 762 } 763 764 /** 765 * Creates the key schedule 766 * 767 * @see \phpseclib3\Crypt\Common\SymmetricKey::setupKey() 768 * @access private 769 */ 770 protected function setupKey() 771 { 772 if (isset($this->kl['key']) && $this->key === $this->kl['key'] && $this->des_rounds === $this->kl['des_rounds']) { 773 // already expanded 774 return; 775 } 776 $this->kl = ['key' => $this->key, 'des_rounds' => $this->des_rounds]; 777 778 static $shifts = [ // number of key bits shifted per round 779 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 780 ]; 781 782 static $pc1map = [ 783 0x00, 0x00, 0x08, 0x08, 0x04, 0x04, 0x0C, 0x0C, 784 0x02, 0x02, 0x0A, 0x0A, 0x06, 0x06, 0x0E, 0x0E, 785 0x10, 0x10, 0x18, 0x18, 0x14, 0x14, 0x1C, 0x1C, 786 0x12, 0x12, 0x1A, 0x1A, 0x16, 0x16, 0x1E, 0x1E, 787 0x20, 0x20, 0x28, 0x28, 0x24, 0x24, 0x2C, 0x2C, 788 0x22, 0x22, 0x2A, 0x2A, 0x26, 0x26, 0x2E, 0x2E, 789 0x30, 0x30, 0x38, 0x38, 0x34, 0x34, 0x3C, 0x3C, 790 0x32, 0x32, 0x3A, 0x3A, 0x36, 0x36, 0x3E, 0x3E, 791 0x40, 0x40, 0x48, 0x48, 0x44, 0x44, 0x4C, 0x4C, 792 0x42, 0x42, 0x4A, 0x4A, 0x46, 0x46, 0x4E, 0x4E, 793 0x50, 0x50, 0x58, 0x58, 0x54, 0x54, 0x5C, 0x5C, 794 0x52, 0x52, 0x5A, 0x5A, 0x56, 0x56, 0x5E, 0x5E, 795 0x60, 0x60, 0x68, 0x68, 0x64, 0x64, 0x6C, 0x6C, 796 0x62, 0x62, 0x6A, 0x6A, 0x66, 0x66, 0x6E, 0x6E, 797 0x70, 0x70, 0x78, 0x78, 0x74, 0x74, 0x7C, 0x7C, 798 0x72, 0x72, 0x7A, 0x7A, 0x76, 0x76, 0x7E, 0x7E, 799 0x80, 0x80, 0x88, 0x88, 0x84, 0x84, 0x8C, 0x8C, 800 0x82, 0x82, 0x8A, 0x8A, 0x86, 0x86, 0x8E, 0x8E, 801 0x90, 0x90, 0x98, 0x98, 0x94, 0x94, 0x9C, 0x9C, 802 0x92, 0x92, 0x9A, 0x9A, 0x96, 0x96, 0x9E, 0x9E, 803 0xA0, 0xA0, 0xA8, 0xA8, 0xA4, 0xA4, 0xAC, 0xAC, 804 0xA2, 0xA2, 0xAA, 0xAA, 0xA6, 0xA6, 0xAE, 0xAE, 805 0xB0, 0xB0, 0xB8, 0xB8, 0xB4, 0xB4, 0xBC, 0xBC, 806 0xB2, 0xB2, 0xBA, 0xBA, 0xB6, 0xB6, 0xBE, 0xBE, 807 0xC0, 0xC0, 0xC8, 0xC8, 0xC4, 0xC4, 0xCC, 0xCC, 808 0xC2, 0xC2, 0xCA, 0xCA, 0xC6, 0xC6, 0xCE, 0xCE, 809 0xD0, 0xD0, 0xD8, 0xD8, 0xD4, 0xD4, 0xDC, 0xDC, 810 0xD2, 0xD2, 0xDA, 0xDA, 0xD6, 0xD6, 0xDE, 0xDE, 811 0xE0, 0xE0, 0xE8, 0xE8, 0xE4, 0xE4, 0xEC, 0xEC, 812 0xE2, 0xE2, 0xEA, 0xEA, 0xE6, 0xE6, 0xEE, 0xEE, 813 0xF0, 0xF0, 0xF8, 0xF8, 0xF4, 0xF4, 0xFC, 0xFC, 814 0xF2, 0xF2, 0xFA, 0xFA, 0xF6, 0xF6, 0xFE, 0xFE 815 ]; 816 817 // Mapping tables for the PC-2 transformation. 818 static $pc2mapc1 = [ 819 0x00000000, 0x00000400, 0x00200000, 0x00200400, 820 0x00000001, 0x00000401, 0x00200001, 0x00200401, 821 0x02000000, 0x02000400, 0x02200000, 0x02200400, 822 0x02000001, 0x02000401, 0x02200001, 0x02200401 823 ]; 824 static $pc2mapc2 = [ 825 0x00000000, 0x00000800, 0x08000000, 0x08000800, 826 0x00010000, 0x00010800, 0x08010000, 0x08010800, 827 0x00000000, 0x00000800, 0x08000000, 0x08000800, 828 0x00010000, 0x00010800, 0x08010000, 0x08010800, 829 0x00000100, 0x00000900, 0x08000100, 0x08000900, 830 0x00010100, 0x00010900, 0x08010100, 0x08010900, 831 0x00000100, 0x00000900, 0x08000100, 0x08000900, 832 0x00010100, 0x00010900, 0x08010100, 0x08010900, 833 0x00000010, 0x00000810, 0x08000010, 0x08000810, 834 0x00010010, 0x00010810, 0x08010010, 0x08010810, 835 0x00000010, 0x00000810, 0x08000010, 0x08000810, 836 0x00010010, 0x00010810, 0x08010010, 0x08010810, 837 0x00000110, 0x00000910, 0x08000110, 0x08000910, 838 0x00010110, 0x00010910, 0x08010110, 0x08010910, 839 0x00000110, 0x00000910, 0x08000110, 0x08000910, 840 0x00010110, 0x00010910, 0x08010110, 0x08010910, 841 0x00040000, 0x00040800, 0x08040000, 0x08040800, 842 0x00050000, 0x00050800, 0x08050000, 0x08050800, 843 0x00040000, 0x00040800, 0x08040000, 0x08040800, 844 0x00050000, 0x00050800, 0x08050000, 0x08050800, 845 0x00040100, 0x00040900, 0x08040100, 0x08040900, 846 0x00050100, 0x00050900, 0x08050100, 0x08050900, 847 0x00040100, 0x00040900, 0x08040100, 0x08040900, 848 0x00050100, 0x00050900, 0x08050100, 0x08050900, 849 0x00040010, 0x00040810, 0x08040010, 0x08040810, 850 0x00050010, 0x00050810, 0x08050010, 0x08050810, 851 0x00040010, 0x00040810, 0x08040010, 0x08040810, 852 0x00050010, 0x00050810, 0x08050010, 0x08050810, 853 0x00040110, 0x00040910, 0x08040110, 0x08040910, 854 0x00050110, 0x00050910, 0x08050110, 0x08050910, 855 0x00040110, 0x00040910, 0x08040110, 0x08040910, 856 0x00050110, 0x00050910, 0x08050110, 0x08050910, 857 0x01000000, 0x01000800, 0x09000000, 0x09000800, 858 0x01010000, 0x01010800, 0x09010000, 0x09010800, 859 0x01000000, 0x01000800, 0x09000000, 0x09000800, 860 0x01010000, 0x01010800, 0x09010000, 0x09010800, 861 0x01000100, 0x01000900, 0x09000100, 0x09000900, 862 0x01010100, 0x01010900, 0x09010100, 0x09010900, 863 0x01000100, 0x01000900, 0x09000100, 0x09000900, 864 0x01010100, 0x01010900, 0x09010100, 0x09010900, 865 0x01000010, 0x01000810, 0x09000010, 0x09000810, 866 0x01010010, 0x01010810, 0x09010010, 0x09010810, 867 0x01000010, 0x01000810, 0x09000010, 0x09000810, 868 0x01010010, 0x01010810, 0x09010010, 0x09010810, 869 0x01000110, 0x01000910, 0x09000110, 0x09000910, 870 0x01010110, 0x01010910, 0x09010110, 0x09010910, 871 0x01000110, 0x01000910, 0x09000110, 0x09000910, 872 0x01010110, 0x01010910, 0x09010110, 0x09010910, 873 0x01040000, 0x01040800, 0x09040000, 0x09040800, 874 0x01050000, 0x01050800, 0x09050000, 0x09050800, 875 0x01040000, 0x01040800, 0x09040000, 0x09040800, 876 0x01050000, 0x01050800, 0x09050000, 0x09050800, 877 0x01040100, 0x01040900, 0x09040100, 0x09040900, 878 0x01050100, 0x01050900, 0x09050100, 0x09050900, 879 0x01040100, 0x01040900, 0x09040100, 0x09040900, 880 0x01050100, 0x01050900, 0x09050100, 0x09050900, 881 0x01040010, 0x01040810, 0x09040010, 0x09040810, 882 0x01050010, 0x01050810, 0x09050010, 0x09050810, 883 0x01040010, 0x01040810, 0x09040010, 0x09040810, 884 0x01050010, 0x01050810, 0x09050010, 0x09050810, 885 0x01040110, 0x01040910, 0x09040110, 0x09040910, 886 0x01050110, 0x01050910, 0x09050110, 0x09050910, 887 0x01040110, 0x01040910, 0x09040110, 0x09040910, 888 0x01050110, 0x01050910, 0x09050110, 0x09050910 889 ]; 890 static $pc2mapc3 = [ 891 0x00000000, 0x00000004, 0x00001000, 0x00001004, 892 0x00000000, 0x00000004, 0x00001000, 0x00001004, 893 0x10000000, 0x10000004, 0x10001000, 0x10001004, 894 0x10000000, 0x10000004, 0x10001000, 0x10001004, 895 0x00000020, 0x00000024, 0x00001020, 0x00001024, 896 0x00000020, 0x00000024, 0x00001020, 0x00001024, 897 0x10000020, 0x10000024, 0x10001020, 0x10001024, 898 0x10000020, 0x10000024, 0x10001020, 0x10001024, 899 0x00080000, 0x00080004, 0x00081000, 0x00081004, 900 0x00080000, 0x00080004, 0x00081000, 0x00081004, 901 0x10080000, 0x10080004, 0x10081000, 0x10081004, 902 0x10080000, 0x10080004, 0x10081000, 0x10081004, 903 0x00080020, 0x00080024, 0x00081020, 0x00081024, 904 0x00080020, 0x00080024, 0x00081020, 0x00081024, 905 0x10080020, 0x10080024, 0x10081020, 0x10081024, 906 0x10080020, 0x10080024, 0x10081020, 0x10081024, 907 0x20000000, 0x20000004, 0x20001000, 0x20001004, 908 0x20000000, 0x20000004, 0x20001000, 0x20001004, 909 0x30000000, 0x30000004, 0x30001000, 0x30001004, 910 0x30000000, 0x30000004, 0x30001000, 0x30001004, 911 0x20000020, 0x20000024, 0x20001020, 0x20001024, 912 0x20000020, 0x20000024, 0x20001020, 0x20001024, 913 0x30000020, 0x30000024, 0x30001020, 0x30001024, 914 0x30000020, 0x30000024, 0x30001020, 0x30001024, 915 0x20080000, 0x20080004, 0x20081000, 0x20081004, 916 0x20080000, 0x20080004, 0x20081000, 0x20081004, 917 0x30080000, 0x30080004, 0x30081000, 0x30081004, 918 0x30080000, 0x30080004, 0x30081000, 0x30081004, 919 0x20080020, 0x20080024, 0x20081020, 0x20081024, 920 0x20080020, 0x20080024, 0x20081020, 0x20081024, 921 0x30080020, 0x30080024, 0x30081020, 0x30081024, 922 0x30080020, 0x30080024, 0x30081020, 0x30081024, 923 0x00000002, 0x00000006, 0x00001002, 0x00001006, 924 0x00000002, 0x00000006, 0x00001002, 0x00001006, 925 0x10000002, 0x10000006, 0x10001002, 0x10001006, 926 0x10000002, 0x10000006, 0x10001002, 0x10001006, 927 0x00000022, 0x00000026, 0x00001022, 0x00001026, 928 0x00000022, 0x00000026, 0x00001022, 0x00001026, 929 0x10000022, 0x10000026, 0x10001022, 0x10001026, 930 0x10000022, 0x10000026, 0x10001022, 0x10001026, 931 0x00080002, 0x00080006, 0x00081002, 0x00081006, 932 0x00080002, 0x00080006, 0x00081002, 0x00081006, 933 0x10080002, 0x10080006, 0x10081002, 0x10081006, 934 0x10080002, 0x10080006, 0x10081002, 0x10081006, 935 0x00080022, 0x00080026, 0x00081022, 0x00081026, 936 0x00080022, 0x00080026, 0x00081022, 0x00081026, 937 0x10080022, 0x10080026, 0x10081022, 0x10081026, 938 0x10080022, 0x10080026, 0x10081022, 0x10081026, 939 0x20000002, 0x20000006, 0x20001002, 0x20001006, 940 0x20000002, 0x20000006, 0x20001002, 0x20001006, 941 0x30000002, 0x30000006, 0x30001002, 0x30001006, 942 0x30000002, 0x30000006, 0x30001002, 0x30001006, 943 0x20000022, 0x20000026, 0x20001022, 0x20001026, 944 0x20000022, 0x20000026, 0x20001022, 0x20001026, 945 0x30000022, 0x30000026, 0x30001022, 0x30001026, 946 0x30000022, 0x30000026, 0x30001022, 0x30001026, 947 0x20080002, 0x20080006, 0x20081002, 0x20081006, 948 0x20080002, 0x20080006, 0x20081002, 0x20081006, 949 0x30080002, 0x30080006, 0x30081002, 0x30081006, 950 0x30080002, 0x30080006, 0x30081002, 0x30081006, 951 0x20080022, 0x20080026, 0x20081022, 0x20081026, 952 0x20080022, 0x20080026, 0x20081022, 0x20081026, 953 0x30080022, 0x30080026, 0x30081022, 0x30081026, 954 0x30080022, 0x30080026, 0x30081022, 0x30081026 955 ]; 956 static $pc2mapc4 = [ 957 0x00000000, 0x00100000, 0x00000008, 0x00100008, 958 0x00000200, 0x00100200, 0x00000208, 0x00100208, 959 0x00000000, 0x00100000, 0x00000008, 0x00100008, 960 0x00000200, 0x00100200, 0x00000208, 0x00100208, 961 0x04000000, 0x04100000, 0x04000008, 0x04100008, 962 0x04000200, 0x04100200, 0x04000208, 0x04100208, 963 0x04000000, 0x04100000, 0x04000008, 0x04100008, 964 0x04000200, 0x04100200, 0x04000208, 0x04100208, 965 0x00002000, 0x00102000, 0x00002008, 0x00102008, 966 0x00002200, 0x00102200, 0x00002208, 0x00102208, 967 0x00002000, 0x00102000, 0x00002008, 0x00102008, 968 0x00002200, 0x00102200, 0x00002208, 0x00102208, 969 0x04002000, 0x04102000, 0x04002008, 0x04102008, 970 0x04002200, 0x04102200, 0x04002208, 0x04102208, 971 0x04002000, 0x04102000, 0x04002008, 0x04102008, 972 0x04002200, 0x04102200, 0x04002208, 0x04102208, 973 0x00000000, 0x00100000, 0x00000008, 0x00100008, 974 0x00000200, 0x00100200, 0x00000208, 0x00100208, 975 0x00000000, 0x00100000, 0x00000008, 0x00100008, 976 0x00000200, 0x00100200, 0x00000208, 0x00100208, 977 0x04000000, 0x04100000, 0x04000008, 0x04100008, 978 0x04000200, 0x04100200, 0x04000208, 0x04100208, 979 0x04000000, 0x04100000, 0x04000008, 0x04100008, 980 0x04000200, 0x04100200, 0x04000208, 0x04100208, 981 0x00002000, 0x00102000, 0x00002008, 0x00102008, 982 0x00002200, 0x00102200, 0x00002208, 0x00102208, 983 0x00002000, 0x00102000, 0x00002008, 0x00102008, 984 0x00002200, 0x00102200, 0x00002208, 0x00102208, 985 0x04002000, 0x04102000, 0x04002008, 0x04102008, 986 0x04002200, 0x04102200, 0x04002208, 0x04102208, 987 0x04002000, 0x04102000, 0x04002008, 0x04102008, 988 0x04002200, 0x04102200, 0x04002208, 0x04102208, 989 0x00020000, 0x00120000, 0x00020008, 0x00120008, 990 0x00020200, 0x00120200, 0x00020208, 0x00120208, 991 0x00020000, 0x00120000, 0x00020008, 0x00120008, 992 0x00020200, 0x00120200, 0x00020208, 0x00120208, 993 0x04020000, 0x04120000, 0x04020008, 0x04120008, 994 0x04020200, 0x04120200, 0x04020208, 0x04120208, 995 0x04020000, 0x04120000, 0x04020008, 0x04120008, 996 0x04020200, 0x04120200, 0x04020208, 0x04120208, 997 0x00022000, 0x00122000, 0x00022008, 0x00122008, 998 0x00022200, 0x00122200, 0x00022208, 0x00122208, 999 0x00022000, 0x00122000, 0x00022008, 0x00122008, 1000 0x00022200, 0x00122200, 0x00022208, 0x00122208, 1001 0x04022000, 0x04122000, 0x04022008, 0x04122008, 1002 0x04022200, 0x04122200, 0x04022208, 0x04122208, 1003 0x04022000, 0x04122000, 0x04022008, 0x04122008, 1004 0x04022200, 0x04122200, 0x04022208, 0x04122208, 1005 0x00020000, 0x00120000, 0x00020008, 0x00120008, 1006 0x00020200, 0x00120200, 0x00020208, 0x00120208, 1007 0x00020000, 0x00120000, 0x00020008, 0x00120008, 1008 0x00020200, 0x00120200, 0x00020208, 0x00120208, 1009 0x04020000, 0x04120000, 0x04020008, 0x04120008, 1010 0x04020200, 0x04120200, 0x04020208, 0x04120208, 1011 0x04020000, 0x04120000, 0x04020008, 0x04120008, 1012 0x04020200, 0x04120200, 0x04020208, 0x04120208, 1013 0x00022000, 0x00122000, 0x00022008, 0x00122008, 1014 0x00022200, 0x00122200, 0x00022208, 0x00122208, 1015 0x00022000, 0x00122000, 0x00022008, 0x00122008, 1016 0x00022200, 0x00122200, 0x00022208, 0x00122208, 1017 0x04022000, 0x04122000, 0x04022008, 0x04122008, 1018 0x04022200, 0x04122200, 0x04022208, 0x04122208, 1019 0x04022000, 0x04122000, 0x04022008, 0x04122008, 1020 0x04022200, 0x04122200, 0x04022208, 0x04122208 1021 ]; 1022 static $pc2mapd1 = [ 1023 0x00000000, 0x00000001, 0x08000000, 0x08000001, 1024 0x00200000, 0x00200001, 0x08200000, 0x08200001, 1025 0x00000002, 0x00000003, 0x08000002, 0x08000003, 1026 0x00200002, 0x00200003, 0x08200002, 0x08200003 1027 ]; 1028 static $pc2mapd2 = [ 1029 0x00000000, 0x00100000, 0x00000800, 0x00100800, 1030 0x00000000, 0x00100000, 0x00000800, 0x00100800, 1031 0x04000000, 0x04100000, 0x04000800, 0x04100800, 1032 0x04000000, 0x04100000, 0x04000800, 0x04100800, 1033 0x00000004, 0x00100004, 0x00000804, 0x00100804, 1034 0x00000004, 0x00100004, 0x00000804, 0x00100804, 1035 0x04000004, 0x04100004, 0x04000804, 0x04100804, 1036 0x04000004, 0x04100004, 0x04000804, 0x04100804, 1037 0x00000000, 0x00100000, 0x00000800, 0x00100800, 1038 0x00000000, 0x00100000, 0x00000800, 0x00100800, 1039 0x04000000, 0x04100000, 0x04000800, 0x04100800, 1040 0x04000000, 0x04100000, 0x04000800, 0x04100800, 1041 0x00000004, 0x00100004, 0x00000804, 0x00100804, 1042 0x00000004, 0x00100004, 0x00000804, 0x00100804, 1043 0x04000004, 0x04100004, 0x04000804, 0x04100804, 1044 0x04000004, 0x04100004, 0x04000804, 0x04100804, 1045 0x00000200, 0x00100200, 0x00000A00, 0x00100A00, 1046 0x00000200, 0x00100200, 0x00000A00, 0x00100A00, 1047 0x04000200, 0x04100200, 0x04000A00, 0x04100A00, 1048 0x04000200, 0x04100200, 0x04000A00, 0x04100A00, 1049 0x00000204, 0x00100204, 0x00000A04, 0x00100A04, 1050 0x00000204, 0x00100204, 0x00000A04, 0x00100A04, 1051 0x04000204, 0x04100204, 0x04000A04, 0x04100A04, 1052 0x04000204, 0x04100204, 0x04000A04, 0x04100A04, 1053 0x00000200, 0x00100200, 0x00000A00, 0x00100A00, 1054 0x00000200, 0x00100200, 0x00000A00, 0x00100A00, 1055 0x04000200, 0x04100200, 0x04000A00, 0x04100A00, 1056 0x04000200, 0x04100200, 0x04000A00, 0x04100A00, 1057 0x00000204, 0x00100204, 0x00000A04, 0x00100A04, 1058 0x00000204, 0x00100204, 0x00000A04, 0x00100A04, 1059 0x04000204, 0x04100204, 0x04000A04, 0x04100A04, 1060 0x04000204, 0x04100204, 0x04000A04, 0x04100A04, 1061 0x00020000, 0x00120000, 0x00020800, 0x00120800, 1062 0x00020000, 0x00120000, 0x00020800, 0x00120800, 1063 0x04020000, 0x04120000, 0x04020800, 0x04120800, 1064 0x04020000, 0x04120000, 0x04020800, 0x04120800, 1065 0x00020004, 0x00120004, 0x00020804, 0x00120804, 1066 0x00020004, 0x00120004, 0x00020804, 0x00120804, 1067 0x04020004, 0x04120004, 0x04020804, 0x04120804, 1068 0x04020004, 0x04120004, 0x04020804, 0x04120804, 1069 0x00020000, 0x00120000, 0x00020800, 0x00120800, 1070 0x00020000, 0x00120000, 0x00020800, 0x00120800, 1071 0x04020000, 0x04120000, 0x04020800, 0x04120800, 1072 0x04020000, 0x04120000, 0x04020800, 0x04120800, 1073 0x00020004, 0x00120004, 0x00020804, 0x00120804, 1074 0x00020004, 0x00120004, 0x00020804, 0x00120804, 1075 0x04020004, 0x04120004, 0x04020804, 0x04120804, 1076 0x04020004, 0x04120004, 0x04020804, 0x04120804, 1077 0x00020200, 0x00120200, 0x00020A00, 0x00120A00, 1078 0x00020200, 0x00120200, 0x00020A00, 0x00120A00, 1079 0x04020200, 0x04120200, 0x04020A00, 0x04120A00, 1080 0x04020200, 0x04120200, 0x04020A00, 0x04120A00, 1081 0x00020204, 0x00120204, 0x00020A04, 0x00120A04, 1082 0x00020204, 0x00120204, 0x00020A04, 0x00120A04, 1083 0x04020204, 0x04120204, 0x04020A04, 0x04120A04, 1084 0x04020204, 0x04120204, 0x04020A04, 0x04120A04, 1085 0x00020200, 0x00120200, 0x00020A00, 0x00120A00, 1086 0x00020200, 0x00120200, 0x00020A00, 0x00120A00, 1087 0x04020200, 0x04120200, 0x04020A00, 0x04120A00, 1088 0x04020200, 0x04120200, 0x04020A00, 0x04120A00, 1089 0x00020204, 0x00120204, 0x00020A04, 0x00120A04, 1090 0x00020204, 0x00120204, 0x00020A04, 0x00120A04, 1091 0x04020204, 0x04120204, 0x04020A04, 0x04120A04, 1092 0x04020204, 0x04120204, 0x04020A04, 0x04120A04 1093 ]; 1094 static $pc2mapd3 = [ 1095 0x00000000, 0x00010000, 0x02000000, 0x02010000, 1096 0x00000020, 0x00010020, 0x02000020, 0x02010020, 1097 0x00040000, 0x00050000, 0x02040000, 0x02050000, 1098 0x00040020, 0x00050020, 0x02040020, 0x02050020, 1099 0x00002000, 0x00012000, 0x02002000, 0x02012000, 1100 0x00002020, 0x00012020, 0x02002020, 0x02012020, 1101 0x00042000, 0x00052000, 0x02042000, 0x02052000, 1102 0x00042020, 0x00052020, 0x02042020, 0x02052020, 1103 0x00000000, 0x00010000, 0x02000000, 0x02010000, 1104 0x00000020, 0x00010020, 0x02000020, 0x02010020, 1105 0x00040000, 0x00050000, 0x02040000, 0x02050000, 1106 0x00040020, 0x00050020, 0x02040020, 0x02050020, 1107 0x00002000, 0x00012000, 0x02002000, 0x02012000, 1108 0x00002020, 0x00012020, 0x02002020, 0x02012020, 1109 0x00042000, 0x00052000, 0x02042000, 0x02052000, 1110 0x00042020, 0x00052020, 0x02042020, 0x02052020, 1111 0x00000010, 0x00010010, 0x02000010, 0x02010010, 1112 0x00000030, 0x00010030, 0x02000030, 0x02010030, 1113 0x00040010, 0x00050010, 0x02040010, 0x02050010, 1114 0x00040030, 0x00050030, 0x02040030, 0x02050030, 1115 0x00002010, 0x00012010, 0x02002010, 0x02012010, 1116 0x00002030, 0x00012030, 0x02002030, 0x02012030, 1117 0x00042010, 0x00052010, 0x02042010, 0x02052010, 1118 0x00042030, 0x00052030, 0x02042030, 0x02052030, 1119 0x00000010, 0x00010010, 0x02000010, 0x02010010, 1120 0x00000030, 0x00010030, 0x02000030, 0x02010030, 1121 0x00040010, 0x00050010, 0x02040010, 0x02050010, 1122 0x00040030, 0x00050030, 0x02040030, 0x02050030, 1123 0x00002010, 0x00012010, 0x02002010, 0x02012010, 1124 0x00002030, 0x00012030, 0x02002030, 0x02012030, 1125 0x00042010, 0x00052010, 0x02042010, 0x02052010, 1126 0x00042030, 0x00052030, 0x02042030, 0x02052030, 1127 0x20000000, 0x20010000, 0x22000000, 0x22010000, 1128 0x20000020, 0x20010020, 0x22000020, 0x22010020, 1129 0x20040000, 0x20050000, 0x22040000, 0x22050000, 1130 0x20040020, 0x20050020, 0x22040020, 0x22050020, 1131 0x20002000, 0x20012000, 0x22002000, 0x22012000, 1132 0x20002020, 0x20012020, 0x22002020, 0x22012020, 1133 0x20042000, 0x20052000, 0x22042000, 0x22052000, 1134 0x20042020, 0x20052020, 0x22042020, 0x22052020, 1135 0x20000000, 0x20010000, 0x22000000, 0x22010000, 1136 0x20000020, 0x20010020, 0x22000020, 0x22010020, 1137 0x20040000, 0x20050000, 0x22040000, 0x22050000, 1138 0x20040020, 0x20050020, 0x22040020, 0x22050020, 1139 0x20002000, 0x20012000, 0x22002000, 0x22012000, 1140 0x20002020, 0x20012020, 0x22002020, 0x22012020, 1141 0x20042000, 0x20052000, 0x22042000, 0x22052000, 1142 0x20042020, 0x20052020, 0x22042020, 0x22052020, 1143 0x20000010, 0x20010010, 0x22000010, 0x22010010, 1144 0x20000030, 0x20010030, 0x22000030, 0x22010030, 1145 0x20040010, 0x20050010, 0x22040010, 0x22050010, 1146 0x20040030, 0x20050030, 0x22040030, 0x22050030, 1147 0x20002010, 0x20012010, 0x22002010, 0x22012010, 1148 0x20002030, 0x20012030, 0x22002030, 0x22012030, 1149 0x20042010, 0x20052010, 0x22042010, 0x22052010, 1150 0x20042030, 0x20052030, 0x22042030, 0x22052030, 1151 0x20000010, 0x20010010, 0x22000010, 0x22010010, 1152 0x20000030, 0x20010030, 0x22000030, 0x22010030, 1153 0x20040010, 0x20050010, 0x22040010, 0x22050010, 1154 0x20040030, 0x20050030, 0x22040030, 0x22050030, 1155 0x20002010, 0x20012010, 0x22002010, 0x22012010, 1156 0x20002030, 0x20012030, 0x22002030, 0x22012030, 1157 0x20042010, 0x20052010, 0x22042010, 0x22052010, 1158 0x20042030, 0x20052030, 0x22042030, 0x22052030 1159 ]; 1160 static $pc2mapd4 = [ 1161 0x00000000, 0x00000400, 0x01000000, 0x01000400, 1162 0x00000000, 0x00000400, 0x01000000, 0x01000400, 1163 0x00000100, 0x00000500, 0x01000100, 0x01000500, 1164 0x00000100, 0x00000500, 0x01000100, 0x01000500, 1165 0x10000000, 0x10000400, 0x11000000, 0x11000400, 1166 0x10000000, 0x10000400, 0x11000000, 0x11000400, 1167 0x10000100, 0x10000500, 0x11000100, 0x11000500, 1168 0x10000100, 0x10000500, 0x11000100, 0x11000500, 1169 0x00080000, 0x00080400, 0x01080000, 0x01080400, 1170 0x00080000, 0x00080400, 0x01080000, 0x01080400, 1171 0x00080100, 0x00080500, 0x01080100, 0x01080500, 1172 0x00080100, 0x00080500, 0x01080100, 0x01080500, 1173 0x10080000, 0x10080400, 0x11080000, 0x11080400, 1174 0x10080000, 0x10080400, 0x11080000, 0x11080400, 1175 0x10080100, 0x10080500, 0x11080100, 0x11080500, 1176 0x10080100, 0x10080500, 0x11080100, 0x11080500, 1177 0x00000008, 0x00000408, 0x01000008, 0x01000408, 1178 0x00000008, 0x00000408, 0x01000008, 0x01000408, 1179 0x00000108, 0x00000508, 0x01000108, 0x01000508, 1180 0x00000108, 0x00000508, 0x01000108, 0x01000508, 1181 0x10000008, 0x10000408, 0x11000008, 0x11000408, 1182 0x10000008, 0x10000408, 0x11000008, 0x11000408, 1183 0x10000108, 0x10000508, 0x11000108, 0x11000508, 1184 0x10000108, 0x10000508, 0x11000108, 0x11000508, 1185 0x00080008, 0x00080408, 0x01080008, 0x01080408, 1186 0x00080008, 0x00080408, 0x01080008, 0x01080408, 1187 0x00080108, 0x00080508, 0x01080108, 0x01080508, 1188 0x00080108, 0x00080508, 0x01080108, 0x01080508, 1189 0x10080008, 0x10080408, 0x11080008, 0x11080408, 1190 0x10080008, 0x10080408, 0x11080008, 0x11080408, 1191 0x10080108, 0x10080508, 0x11080108, 0x11080508, 1192 0x10080108, 0x10080508, 0x11080108, 0x11080508, 1193 0x00001000, 0x00001400, 0x01001000, 0x01001400, 1194 0x00001000, 0x00001400, 0x01001000, 0x01001400, 1195 0x00001100, 0x00001500, 0x01001100, 0x01001500, 1196 0x00001100, 0x00001500, 0x01001100, 0x01001500, 1197 0x10001000, 0x10001400, 0x11001000, 0x11001400, 1198 0x10001000, 0x10001400, 0x11001000, 0x11001400, 1199 0x10001100, 0x10001500, 0x11001100, 0x11001500, 1200 0x10001100, 0x10001500, 0x11001100, 0x11001500, 1201 0x00081000, 0x00081400, 0x01081000, 0x01081400, 1202 0x00081000, 0x00081400, 0x01081000, 0x01081400, 1203 0x00081100, 0x00081500, 0x01081100, 0x01081500, 1204 0x00081100, 0x00081500, 0x01081100, 0x01081500, 1205 0x10081000, 0x10081400, 0x11081000, 0x11081400, 1206 0x10081000, 0x10081400, 0x11081000, 0x11081400, 1207 0x10081100, 0x10081500, 0x11081100, 0x11081500, 1208 0x10081100, 0x10081500, 0x11081100, 0x11081500, 1209 0x00001008, 0x00001408, 0x01001008, 0x01001408, 1210 0x00001008, 0x00001408, 0x01001008, 0x01001408, 1211 0x00001108, 0x00001508, 0x01001108, 0x01001508, 1212 0x00001108, 0x00001508, 0x01001108, 0x01001508, 1213 0x10001008, 0x10001408, 0x11001008, 0x11001408, 1214 0x10001008, 0x10001408, 0x11001008, 0x11001408, 1215 0x10001108, 0x10001508, 0x11001108, 0x11001508, 1216 0x10001108, 0x10001508, 0x11001108, 0x11001508, 1217 0x00081008, 0x00081408, 0x01081008, 0x01081408, 1218 0x00081008, 0x00081408, 0x01081008, 0x01081408, 1219 0x00081108, 0x00081508, 0x01081108, 0x01081508, 1220 0x00081108, 0x00081508, 0x01081108, 0x01081508, 1221 0x10081008, 0x10081408, 0x11081008, 0x11081408, 1222 0x10081008, 0x10081408, 0x11081008, 0x11081408, 1223 0x10081108, 0x10081508, 0x11081108, 0x11081508, 1224 0x10081108, 0x10081508, 0x11081108, 0x11081508 1225 ]; 1226 1227 $keys = []; 1228 for ($des_round = 0; $des_round < $this->des_rounds; ++$des_round) { 1229 // pad the key and remove extra characters as appropriate. 1230 $key = str_pad(substr($this->key, $des_round * 8, 8), 8, "\0"); 1231 1232 // Perform the PC/1 transformation and compute C and D. 1233 $t = unpack('Nl/Nr', $key); 1234 list($l, $r) = [$t['l'], $t['r']]; 1235 $key = (self::$shuffle[$pc1map[ $r & 0xFF]] & "\x80\x80\x80\x80\x80\x80\x80\x00") | 1236 (self::$shuffle[$pc1map[($r >> 8) & 0xFF]] & "\x40\x40\x40\x40\x40\x40\x40\x00") | 1237 (self::$shuffle[$pc1map[($r >> 16) & 0xFF]] & "\x20\x20\x20\x20\x20\x20\x20\x00") | 1238 (self::$shuffle[$pc1map[($r >> 24) & 0xFF]] & "\x10\x10\x10\x10\x10\x10\x10\x00") | 1239 (self::$shuffle[$pc1map[ $l & 0xFF]] & "\x08\x08\x08\x08\x08\x08\x08\x00") | 1240 (self::$shuffle[$pc1map[($l >> 8) & 0xFF]] & "\x04\x04\x04\x04\x04\x04\x04\x00") | 1241 (self::$shuffle[$pc1map[($l >> 16) & 0xFF]] & "\x02\x02\x02\x02\x02\x02\x02\x00") | 1242 (self::$shuffle[$pc1map[($l >> 24) & 0xFF]] & "\x01\x01\x01\x01\x01\x01\x01\x00"); 1243 $key = unpack('Nc/Nd', $key); 1244 $c = ( $key['c'] >> 4) & 0x0FFFFFFF; 1245 $d = (($key['d'] >> 4) & 0x0FFFFFF0) | ($key['c'] & 0x0F); 1246 1247 $keys[$des_round] = [ 1248 self::ENCRYPT => [], 1249 self::DECRYPT => array_fill(0, 32, 0) 1250 ]; 1251 for ($i = 0, $ki = 31; $i < 16; ++$i, $ki -= 2) { 1252 $c <<= $shifts[$i]; 1253 $c = ($c | ($c >> 28)) & 0x0FFFFFFF; 1254 $d <<= $shifts[$i]; 1255 $d = ($d | ($d >> 28)) & 0x0FFFFFFF; 1256 1257 // Perform the PC-2 transformation. 1258 $cp = $pc2mapc1[ $c >> 24 ] | $pc2mapc2[($c >> 16) & 0xFF] | 1259 $pc2mapc3[($c >> 8) & 0xFF] | $pc2mapc4[ $c & 0xFF]; 1260 $dp = $pc2mapd1[ $d >> 24 ] | $pc2mapd2[($d >> 16) & 0xFF] | 1261 $pc2mapd3[($d >> 8) & 0xFF] | $pc2mapd4[ $d & 0xFF]; 1262 1263 // Reorder: odd bytes/even bytes. Push the result in key schedule. 1264 $val1 = ( $cp & 0xFF000000) | (($cp << 8) & 0x00FF0000) | 1265 (($dp >> 16) & 0x0000FF00) | (($dp >> 8) & 0x000000FF); 1266 $val2 = (($cp << 8) & 0xFF000000) | (($cp << 16) & 0x00FF0000) | 1267 (($dp >> 8) & 0x0000FF00) | ( $dp & 0x000000FF); 1268 $keys[$des_round][self::ENCRYPT][ ] = $val1; 1269 $keys[$des_round][self::DECRYPT][$ki - 1] = $val1; 1270 $keys[$des_round][self::ENCRYPT][ ] = $val2; 1271 $keys[$des_round][self::DECRYPT][$ki ] = $val2; 1272 } 1273 } 1274 1275 switch ($this->des_rounds) { 1276 case 3: // 3DES keys 1277 $this->keys = [ 1278 self::ENCRYPT => array_merge( 1279 $keys[0][self::ENCRYPT], 1280 $keys[1][self::DECRYPT], 1281 $keys[2][self::ENCRYPT] 1282 ), 1283 self::DECRYPT => array_merge( 1284 $keys[2][self::DECRYPT], 1285 $keys[1][self::ENCRYPT], 1286 $keys[0][self::DECRYPT] 1287 ) 1288 ]; 1289 break; 1290 // case 1: // DES keys 1291 default: 1292 $this->keys = [ 1293 self::ENCRYPT => $keys[0][self::ENCRYPT], 1294 self::DECRYPT => $keys[0][self::DECRYPT] 1295 ]; 1296 } 1297 } 1298 1299 /** 1300 * Setup the performance-optimized function for de/encrypt() 1301 * 1302 * @see \phpseclib3\Crypt\Common\SymmetricKey::setupInlineCrypt() 1303 * @access private 1304 */ 1305 protected function setupInlineCrypt() 1306 { 1307 // Engine configuration for: 1308 // - DES ($des_rounds == 1) or 1309 // - 3DES ($des_rounds == 3) 1310 $des_rounds = $this->des_rounds; 1311 1312 $init_crypt = 'static $sbox1, $sbox2, $sbox3, $sbox4, $sbox5, $sbox6, $sbox7, $sbox8, $shuffleip, $shuffleinvip; 1313 if (!$sbox1) { 1314 $sbox1 = array_map("intval", self::$sbox1); 1315 $sbox2 = array_map("intval", self::$sbox2); 1316 $sbox3 = array_map("intval", self::$sbox3); 1317 $sbox4 = array_map("intval", self::$sbox4); 1318 $sbox5 = array_map("intval", self::$sbox5); 1319 $sbox6 = array_map("intval", self::$sbox6); 1320 $sbox7 = array_map("intval", self::$sbox7); 1321 $sbox8 = array_map("intval", self::$sbox8);' 1322 /* Merge $shuffle with $[inv]ipmap */ . ' 1323 for ($i = 0; $i < 256; ++$i) { 1324 $shuffleip[] = self::$shuffle[self::$ipmap[$i]]; 1325 $shuffleinvip[] = self::$shuffle[self::$invipmap[$i]]; 1326 } 1327 } 1328 '; 1329 1330 $k = [ 1331 self::ENCRYPT => $this->keys[self::ENCRYPT], 1332 self::DECRYPT => $this->keys[self::DECRYPT] 1333 ]; 1334 $init_encrypt = ''; 1335 $init_decrypt = ''; 1336 1337 // Creating code for en- and decryption. 1338 $crypt_block = []; 1339 foreach ([self::ENCRYPT, self::DECRYPT] as $c) { 1340 /* Do the initial IP permutation. */ 1341 $crypt_block[$c] = ' 1342 $in = unpack("N*", $in); 1343 $l = $in[1]; 1344 $r = $in[2]; 1345 $in = unpack("N*", 1346 ($shuffleip[ $r & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") | 1347 ($shuffleip[($r >> 8) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") | 1348 ($shuffleip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") | 1349 ($shuffleip[($r >> 24) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") | 1350 ($shuffleip[ $l & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") | 1351 ($shuffleip[($l >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") | 1352 ($shuffleip[($l >> 16) & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") | 1353 ($shuffleip[($l >> 24) & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01") 1354 ); 1355 ' . /* Extract L0 and R0 */ ' 1356 $l = $in[1]; 1357 $r = $in[2]; 1358 '; 1359 1360 $l = '$l'; 1361 $r = '$r'; 1362 1363 // Perform DES or 3DES. 1364 for ($ki = -1, $des_round = 0; $des_round < $des_rounds; ++$des_round) { 1365 // Perform the 16 steps. 1366 for ($i = 0; $i < 16; ++$i) { 1367 // start of "the Feistel (F) function" - see the following URL: 1368 // http://en.wikipedia.org/wiki/Image:Data_Encryption_Standard_InfoBox_Diagram.png 1369 // Merge key schedule. 1370 $crypt_block[$c] .= ' 1371 $b1 = ((' . $r . ' >> 3) & 0x1FFFFFFF) ^ (' . $r . ' << 29) ^ ' . $k[$c][++$ki] . '; 1372 $b2 = ((' . $r . ' >> 31) & 0x00000001) ^ (' . $r . ' << 1) ^ ' . $k[$c][++$ki] . ';' . 1373 /* S-box indexing. */ 1374 $l . ' = $sbox1[($b1 >> 24) & 0x3F] ^ $sbox2[($b2 >> 24) & 0x3F] ^ 1375 $sbox3[($b1 >> 16) & 0x3F] ^ $sbox4[($b2 >> 16) & 0x3F] ^ 1376 $sbox5[($b1 >> 8) & 0x3F] ^ $sbox6[($b2 >> 8) & 0x3F] ^ 1377 $sbox7[ $b1 & 0x3F] ^ $sbox8[ $b2 & 0x3F] ^ ' . $l . '; 1378 '; 1379 // end of "the Feistel (F) function" 1380 1381 // swap L & R 1382 list($l, $r) = [$r, $l]; 1383 } 1384 list($l, $r) = [$r, $l]; 1385 } 1386 1387 // Perform the inverse IP permutation. 1388 $crypt_block[$c] .= '$in = 1389 ($shuffleinvip[($l >> 24) & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") | 1390 ($shuffleinvip[($r >> 24) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") | 1391 ($shuffleinvip[($l >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") | 1392 ($shuffleinvip[($r >> 16) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") | 1393 ($shuffleinvip[($l >> 8) & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") | 1394 ($shuffleinvip[($r >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") | 1395 ($shuffleinvip[ $l & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") | 1396 ($shuffleinvip[ $r & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01"); 1397 '; 1398 } 1399 1400 // Creates the inline-crypt function 1401 $this->inline_crypt = $this->createInlineCryptFunction( 1402 [ 1403 'init_crypt' => $init_crypt, 1404 'init_encrypt' => $init_encrypt, 1405 'init_decrypt' => $init_decrypt, 1406 'encrypt_block' => $crypt_block[self::ENCRYPT], 1407 'decrypt_block' => $crypt_block[self::DECRYPT] 1408 ] 1409 ); 1410 } 1411} 1412
