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 * @author Jim Wigginton <terrafrost@php.net> 36 * @copyright 2007 Jim Wigginton 37 * @license http://www.opensource.org/licenses/mit-license.html MIT License 38 * @link http://phpseclib.sourceforge.net 39 */ 40 41namespace phpseclib3\Crypt; 42 43use phpseclib3\Crypt\Common\BlockCipher; 44use phpseclib3\Exception\BadModeException; 45 46/** 47 * Pure-PHP implementation of DES. 48 * 49 * @author Jim Wigginton <terrafrost@php.net> 50 */ 51class DES extends BlockCipher 52{ 53 /** 54 * Contains $keys[self::ENCRYPT] 55 * 56 * @see \phpseclib3\Crypt\DES::setupKey() 57 * @see \phpseclib3\Crypt\DES::processBlock() 58 */ 59 const ENCRYPT = 0; 60 /** 61 * Contains $keys[self::DECRYPT] 62 * 63 * @see \phpseclib3\Crypt\DES::setupKey() 64 * @see \phpseclib3\Crypt\DES::processBlock() 65 */ 66 const DECRYPT = 1; 67 68 /** 69 * Block Length of the cipher 70 * 71 * @see \phpseclib3\Crypt\Common\SymmetricKey::block_size 72 * @var int 73 */ 74 protected $block_size = 8; 75 76 /** 77 * Key Length (in bytes) 78 * 79 * @see \phpseclib3\Crypt\Common\SymmetricKey::setKeyLength() 80 * @var int 81 */ 82 protected $key_length = 8; 83 84 /** 85 * The mcrypt specific name of the cipher 86 * 87 * @see \phpseclib3\Crypt\Common\SymmetricKey::cipher_name_mcrypt 88 * @var string 89 */ 90 protected $cipher_name_mcrypt = 'des'; 91 92 /** 93 * The OpenSSL names of the cipher / modes 94 * 95 * @see \phpseclib3\Crypt\Common\SymmetricKey::openssl_mode_names 96 * @var array 97 */ 98 protected $openssl_mode_names = [ 99 self::MODE_ECB => 'des-ecb', 100 self::MODE_CBC => 'des-cbc', 101 self::MODE_CFB => 'des-cfb', 102 self::MODE_OFB => 'des-ofb' 103 // self::MODE_CTR is undefined for DES 104 ]; 105 106 /** 107 * Optimizing value while CFB-encrypting 108 * 109 * @see \phpseclib3\Crypt\Common\SymmetricKey::cfb_init_len 110 * @var int 111 */ 112 protected $cfb_init_len = 500; 113 114 /** 115 * Switch for DES/3DES encryption 116 * 117 * Used only if $engine == self::ENGINE_INTERNAL 118 * 119 * @see self::setupKey() 120 * @see self::processBlock() 121 * @var int 122 */ 123 protected $des_rounds = 1; 124 125 /** 126 * max possible size of $key 127 * 128 * @see self::setKey() 129 * @var string 130 */ 131 protected $key_length_max = 8; 132 133 /** 134 * The Key Schedule 135 * 136 * @see self::setupKey() 137 * @var array 138 */ 139 private $keys; 140 141 /** 142 * Key Cache "key" 143 * 144 * @see self::setupKey() 145 * @var array 146 */ 147 private $kl; 148 149 /** 150 * Shuffle table. 151 * 152 * For each byte value index, the entry holds an 8-byte string 153 * with each byte containing all bits in the same state as the 154 * corresponding bit in the index value. 155 * 156 * @see self::processBlock() 157 * @see self::setupKey() 158 * @var array 159 */ 160 protected static $shuffle = [ 161 "\x00\x00\x00\x00\x00\x00\x00\x00", "\x00\x00\x00\x00\x00\x00\x00\xFF", 162 "\x00\x00\x00\x00\x00\x00\xFF\x00", "\x00\x00\x00\x00\x00\x00\xFF\xFF", 163 "\x00\x00\x00\x00\x00\xFF\x00\x00", "\x00\x00\x00\x00\x00\xFF\x00\xFF", 164 "\x00\x00\x00\x00\x00\xFF\xFF\x00", "\x00\x00\x00\x00\x00\xFF\xFF\xFF", 165 "\x00\x00\x00\x00\xFF\x00\x00\x00", "\x00\x00\x00\x00\xFF\x00\x00\xFF", 166 "\x00\x00\x00\x00\xFF\x00\xFF\x00", "\x00\x00\x00\x00\xFF\x00\xFF\xFF", 167 "\x00\x00\x00\x00\xFF\xFF\x00\x00", "\x00\x00\x00\x00\xFF\xFF\x00\xFF", 168 "\x00\x00\x00\x00\xFF\xFF\xFF\x00", "\x00\x00\x00\x00\xFF\xFF\xFF\xFF", 169 "\x00\x00\x00\xFF\x00\x00\x00\x00", "\x00\x00\x00\xFF\x00\x00\x00\xFF", 170 "\x00\x00\x00\xFF\x00\x00\xFF\x00", "\x00\x00\x00\xFF\x00\x00\xFF\xFF", 171 "\x00\x00\x00\xFF\x00\xFF\x00\x00", "\x00\x00\x00\xFF\x00\xFF\x00\xFF", 172 "\x00\x00\x00\xFF\x00\xFF\xFF\x00", "\x00\x00\x00\xFF\x00\xFF\xFF\xFF", 173 "\x00\x00\x00\xFF\xFF\x00\x00\x00", "\x00\x00\x00\xFF\xFF\x00\x00\xFF", 174 "\x00\x00\x00\xFF\xFF\x00\xFF\x00", "\x00\x00\x00\xFF\xFF\x00\xFF\xFF", 175 "\x00\x00\x00\xFF\xFF\xFF\x00\x00", "\x00\x00\x00\xFF\xFF\xFF\x00\xFF", 176 "\x00\x00\x00\xFF\xFF\xFF\xFF\x00", "\x00\x00\x00\xFF\xFF\xFF\xFF\xFF", 177 "\x00\x00\xFF\x00\x00\x00\x00\x00", "\x00\x00\xFF\x00\x00\x00\x00\xFF", 178 "\x00\x00\xFF\x00\x00\x00\xFF\x00", "\x00\x00\xFF\x00\x00\x00\xFF\xFF", 179 "\x00\x00\xFF\x00\x00\xFF\x00\x00", "\x00\x00\xFF\x00\x00\xFF\x00\xFF", 180 "\x00\x00\xFF\x00\x00\xFF\xFF\x00", "\x00\x00\xFF\x00\x00\xFF\xFF\xFF", 181 "\x00\x00\xFF\x00\xFF\x00\x00\x00", "\x00\x00\xFF\x00\xFF\x00\x00\xFF", 182 "\x00\x00\xFF\x00\xFF\x00\xFF\x00", "\x00\x00\xFF\x00\xFF\x00\xFF\xFF", 183 "\x00\x00\xFF\x00\xFF\xFF\x00\x00", "\x00\x00\xFF\x00\xFF\xFF\x00\xFF", 184 "\x00\x00\xFF\x00\xFF\xFF\xFF\x00", "\x00\x00\xFF\x00\xFF\xFF\xFF\xFF", 185 "\x00\x00\xFF\xFF\x00\x00\x00\x00", "\x00\x00\xFF\xFF\x00\x00\x00\xFF", 186 "\x00\x00\xFF\xFF\x00\x00\xFF\x00", "\x00\x00\xFF\xFF\x00\x00\xFF\xFF", 187 "\x00\x00\xFF\xFF\x00\xFF\x00\x00", "\x00\x00\xFF\xFF\x00\xFF\x00\xFF", 188 "\x00\x00\xFF\xFF\x00\xFF\xFF\x00", "\x00\x00\xFF\xFF\x00\xFF\xFF\xFF", 189 "\x00\x00\xFF\xFF\xFF\x00\x00\x00", "\x00\x00\xFF\xFF\xFF\x00\x00\xFF", 190 "\x00\x00\xFF\xFF\xFF\x00\xFF\x00", "\x00\x00\xFF\xFF\xFF\x00\xFF\xFF", 191 "\x00\x00\xFF\xFF\xFF\xFF\x00\x00", "\x00\x00\xFF\xFF\xFF\xFF\x00\xFF", 192 "\x00\x00\xFF\xFF\xFF\xFF\xFF\x00", "\x00\x00\xFF\xFF\xFF\xFF\xFF\xFF", 193 "\x00\xFF\x00\x00\x00\x00\x00\x00", "\x00\xFF\x00\x00\x00\x00\x00\xFF", 194 "\x00\xFF\x00\x00\x00\x00\xFF\x00", "\x00\xFF\x00\x00\x00\x00\xFF\xFF", 195 "\x00\xFF\x00\x00\x00\xFF\x00\x00", "\x00\xFF\x00\x00\x00\xFF\x00\xFF", 196 "\x00\xFF\x00\x00\x00\xFF\xFF\x00", "\x00\xFF\x00\x00\x00\xFF\xFF\xFF", 197 "\x00\xFF\x00\x00\xFF\x00\x00\x00", "\x00\xFF\x00\x00\xFF\x00\x00\xFF", 198 "\x00\xFF\x00\x00\xFF\x00\xFF\x00", "\x00\xFF\x00\x00\xFF\x00\xFF\xFF", 199 "\x00\xFF\x00\x00\xFF\xFF\x00\x00", "\x00\xFF\x00\x00\xFF\xFF\x00\xFF", 200 "\x00\xFF\x00\x00\xFF\xFF\xFF\x00", "\x00\xFF\x00\x00\xFF\xFF\xFF\xFF", 201 "\x00\xFF\x00\xFF\x00\x00\x00\x00", "\x00\xFF\x00\xFF\x00\x00\x00\xFF", 202 "\x00\xFF\x00\xFF\x00\x00\xFF\x00", "\x00\xFF\x00\xFF\x00\x00\xFF\xFF", 203 "\x00\xFF\x00\xFF\x00\xFF\x00\x00", "\x00\xFF\x00\xFF\x00\xFF\x00\xFF", 204 "\x00\xFF\x00\xFF\x00\xFF\xFF\x00", "\x00\xFF\x00\xFF\x00\xFF\xFF\xFF", 205 "\x00\xFF\x00\xFF\xFF\x00\x00\x00", "\x00\xFF\x00\xFF\xFF\x00\x00\xFF", 206 "\x00\xFF\x00\xFF\xFF\x00\xFF\x00", "\x00\xFF\x00\xFF\xFF\x00\xFF\xFF", 207 "\x00\xFF\x00\xFF\xFF\xFF\x00\x00", "\x00\xFF\x00\xFF\xFF\xFF\x00\xFF", 208 "\x00\xFF\x00\xFF\xFF\xFF\xFF\x00", "\x00\xFF\x00\xFF\xFF\xFF\xFF\xFF", 209 "\x00\xFF\xFF\x00\x00\x00\x00\x00", "\x00\xFF\xFF\x00\x00\x00\x00\xFF", 210 "\x00\xFF\xFF\x00\x00\x00\xFF\x00", "\x00\xFF\xFF\x00\x00\x00\xFF\xFF", 211 "\x00\xFF\xFF\x00\x00\xFF\x00\x00", "\x00\xFF\xFF\x00\x00\xFF\x00\xFF", 212 "\x00\xFF\xFF\x00\x00\xFF\xFF\x00", "\x00\xFF\xFF\x00\x00\xFF\xFF\xFF", 213 "\x00\xFF\xFF\x00\xFF\x00\x00\x00", "\x00\xFF\xFF\x00\xFF\x00\x00\xFF", 214 "\x00\xFF\xFF\x00\xFF\x00\xFF\x00", "\x00\xFF\xFF\x00\xFF\x00\xFF\xFF", 215 "\x00\xFF\xFF\x00\xFF\xFF\x00\x00", "\x00\xFF\xFF\x00\xFF\xFF\x00\xFF", 216 "\x00\xFF\xFF\x00\xFF\xFF\xFF\x00", "\x00\xFF\xFF\x00\xFF\xFF\xFF\xFF", 217 "\x00\xFF\xFF\xFF\x00\x00\x00\x00", "\x00\xFF\xFF\xFF\x00\x00\x00\xFF", 218 "\x00\xFF\xFF\xFF\x00\x00\xFF\x00", "\x00\xFF\xFF\xFF\x00\x00\xFF\xFF", 219 "\x00\xFF\xFF\xFF\x00\xFF\x00\x00", "\x00\xFF\xFF\xFF\x00\xFF\x00\xFF", 220 "\x00\xFF\xFF\xFF\x00\xFF\xFF\x00", "\x00\xFF\xFF\xFF\x00\xFF\xFF\xFF", 221 "\x00\xFF\xFF\xFF\xFF\x00\x00\x00", "\x00\xFF\xFF\xFF\xFF\x00\x00\xFF", 222 "\x00\xFF\xFF\xFF\xFF\x00\xFF\x00", "\x00\xFF\xFF\xFF\xFF\x00\xFF\xFF", 223 "\x00\xFF\xFF\xFF\xFF\xFF\x00\x00", "\x00\xFF\xFF\xFF\xFF\xFF\x00\xFF", 224 "\x00\xFF\xFF\xFF\xFF\xFF\xFF\x00", "\x00\xFF\xFF\xFF\xFF\xFF\xFF\xFF", 225 "\xFF\x00\x00\x00\x00\x00\x00\x00", "\xFF\x00\x00\x00\x00\x00\x00\xFF", 226 "\xFF\x00\x00\x00\x00\x00\xFF\x00", "\xFF\x00\x00\x00\x00\x00\xFF\xFF", 227 "\xFF\x00\x00\x00\x00\xFF\x00\x00", "\xFF\x00\x00\x00\x00\xFF\x00\xFF", 228 "\xFF\x00\x00\x00\x00\xFF\xFF\x00", "\xFF\x00\x00\x00\x00\xFF\xFF\xFF", 229 "\xFF\x00\x00\x00\xFF\x00\x00\x00", "\xFF\x00\x00\x00\xFF\x00\x00\xFF", 230 "\xFF\x00\x00\x00\xFF\x00\xFF\x00", "\xFF\x00\x00\x00\xFF\x00\xFF\xFF", 231 "\xFF\x00\x00\x00\xFF\xFF\x00\x00", "\xFF\x00\x00\x00\xFF\xFF\x00\xFF", 232 "\xFF\x00\x00\x00\xFF\xFF\xFF\x00", "\xFF\x00\x00\x00\xFF\xFF\xFF\xFF", 233 "\xFF\x00\x00\xFF\x00\x00\x00\x00", "\xFF\x00\x00\xFF\x00\x00\x00\xFF", 234 "\xFF\x00\x00\xFF\x00\x00\xFF\x00", "\xFF\x00\x00\xFF\x00\x00\xFF\xFF", 235 "\xFF\x00\x00\xFF\x00\xFF\x00\x00", "\xFF\x00\x00\xFF\x00\xFF\x00\xFF", 236 "\xFF\x00\x00\xFF\x00\xFF\xFF\x00", "\xFF\x00\x00\xFF\x00\xFF\xFF\xFF", 237 "\xFF\x00\x00\xFF\xFF\x00\x00\x00", "\xFF\x00\x00\xFF\xFF\x00\x00\xFF", 238 "\xFF\x00\x00\xFF\xFF\x00\xFF\x00", "\xFF\x00\x00\xFF\xFF\x00\xFF\xFF", 239 "\xFF\x00\x00\xFF\xFF\xFF\x00\x00", "\xFF\x00\x00\xFF\xFF\xFF\x00\xFF", 240 "\xFF\x00\x00\xFF\xFF\xFF\xFF\x00", "\xFF\x00\x00\xFF\xFF\xFF\xFF\xFF", 241 "\xFF\x00\xFF\x00\x00\x00\x00\x00", "\xFF\x00\xFF\x00\x00\x00\x00\xFF", 242 "\xFF\x00\xFF\x00\x00\x00\xFF\x00", "\xFF\x00\xFF\x00\x00\x00\xFF\xFF", 243 "\xFF\x00\xFF\x00\x00\xFF\x00\x00", "\xFF\x00\xFF\x00\x00\xFF\x00\xFF", 244 "\xFF\x00\xFF\x00\x00\xFF\xFF\x00", "\xFF\x00\xFF\x00\x00\xFF\xFF\xFF", 245 "\xFF\x00\xFF\x00\xFF\x00\x00\x00", "\xFF\x00\xFF\x00\xFF\x00\x00\xFF", 246 "\xFF\x00\xFF\x00\xFF\x00\xFF\x00", "\xFF\x00\xFF\x00\xFF\x00\xFF\xFF", 247 "\xFF\x00\xFF\x00\xFF\xFF\x00\x00", "\xFF\x00\xFF\x00\xFF\xFF\x00\xFF", 248 "\xFF\x00\xFF\x00\xFF\xFF\xFF\x00", "\xFF\x00\xFF\x00\xFF\xFF\xFF\xFF", 249 "\xFF\x00\xFF\xFF\x00\x00\x00\x00", "\xFF\x00\xFF\xFF\x00\x00\x00\xFF", 250 "\xFF\x00\xFF\xFF\x00\x00\xFF\x00", "\xFF\x00\xFF\xFF\x00\x00\xFF\xFF", 251 "\xFF\x00\xFF\xFF\x00\xFF\x00\x00", "\xFF\x00\xFF\xFF\x00\xFF\x00\xFF", 252 "\xFF\x00\xFF\xFF\x00\xFF\xFF\x00", "\xFF\x00\xFF\xFF\x00\xFF\xFF\xFF", 253 "\xFF\x00\xFF\xFF\xFF\x00\x00\x00", "\xFF\x00\xFF\xFF\xFF\x00\x00\xFF", 254 "\xFF\x00\xFF\xFF\xFF\x00\xFF\x00", "\xFF\x00\xFF\xFF\xFF\x00\xFF\xFF", 255 "\xFF\x00\xFF\xFF\xFF\xFF\x00\x00", "\xFF\x00\xFF\xFF\xFF\xFF\x00\xFF", 256 "\xFF\x00\xFF\xFF\xFF\xFF\xFF\x00", "\xFF\x00\xFF\xFF\xFF\xFF\xFF\xFF", 257 "\xFF\xFF\x00\x00\x00\x00\x00\x00", "\xFF\xFF\x00\x00\x00\x00\x00\xFF", 258 "\xFF\xFF\x00\x00\x00\x00\xFF\x00", "\xFF\xFF\x00\x00\x00\x00\xFF\xFF", 259 "\xFF\xFF\x00\x00\x00\xFF\x00\x00", "\xFF\xFF\x00\x00\x00\xFF\x00\xFF", 260 "\xFF\xFF\x00\x00\x00\xFF\xFF\x00", "\xFF\xFF\x00\x00\x00\xFF\xFF\xFF", 261 "\xFF\xFF\x00\x00\xFF\x00\x00\x00", "\xFF\xFF\x00\x00\xFF\x00\x00\xFF", 262 "\xFF\xFF\x00\x00\xFF\x00\xFF\x00", "\xFF\xFF\x00\x00\xFF\x00\xFF\xFF", 263 "\xFF\xFF\x00\x00\xFF\xFF\x00\x00", "\xFF\xFF\x00\x00\xFF\xFF\x00\xFF", 264 "\xFF\xFF\x00\x00\xFF\xFF\xFF\x00", "\xFF\xFF\x00\x00\xFF\xFF\xFF\xFF", 265 "\xFF\xFF\x00\xFF\x00\x00\x00\x00", "\xFF\xFF\x00\xFF\x00\x00\x00\xFF", 266 "\xFF\xFF\x00\xFF\x00\x00\xFF\x00", "\xFF\xFF\x00\xFF\x00\x00\xFF\xFF", 267 "\xFF\xFF\x00\xFF\x00\xFF\x00\x00", "\xFF\xFF\x00\xFF\x00\xFF\x00\xFF", 268 "\xFF\xFF\x00\xFF\x00\xFF\xFF\x00", "\xFF\xFF\x00\xFF\x00\xFF\xFF\xFF", 269 "\xFF\xFF\x00\xFF\xFF\x00\x00\x00", "\xFF\xFF\x00\xFF\xFF\x00\x00\xFF", 270 "\xFF\xFF\x00\xFF\xFF\x00\xFF\x00", "\xFF\xFF\x00\xFF\xFF\x00\xFF\xFF", 271 "\xFF\xFF\x00\xFF\xFF\xFF\x00\x00", "\xFF\xFF\x00\xFF\xFF\xFF\x00\xFF", 272 "\xFF\xFF\x00\xFF\xFF\xFF\xFF\x00", "\xFF\xFF\x00\xFF\xFF\xFF\xFF\xFF", 273 "\xFF\xFF\xFF\x00\x00\x00\x00\x00", "\xFF\xFF\xFF\x00\x00\x00\x00\xFF", 274 "\xFF\xFF\xFF\x00\x00\x00\xFF\x00", "\xFF\xFF\xFF\x00\x00\x00\xFF\xFF", 275 "\xFF\xFF\xFF\x00\x00\xFF\x00\x00", "\xFF\xFF\xFF\x00\x00\xFF\x00\xFF", 276 "\xFF\xFF\xFF\x00\x00\xFF\xFF\x00", "\xFF\xFF\xFF\x00\x00\xFF\xFF\xFF", 277 "\xFF\xFF\xFF\x00\xFF\x00\x00\x00", "\xFF\xFF\xFF\x00\xFF\x00\x00\xFF", 278 "\xFF\xFF\xFF\x00\xFF\x00\xFF\x00", "\xFF\xFF\xFF\x00\xFF\x00\xFF\xFF", 279 "\xFF\xFF\xFF\x00\xFF\xFF\x00\x00", "\xFF\xFF\xFF\x00\xFF\xFF\x00\xFF", 280 "\xFF\xFF\xFF\x00\xFF\xFF\xFF\x00", "\xFF\xFF\xFF\x00\xFF\xFF\xFF\xFF", 281 "\xFF\xFF\xFF\xFF\x00\x00\x00\x00", "\xFF\xFF\xFF\xFF\x00\x00\x00\xFF", 282 "\xFF\xFF\xFF\xFF\x00\x00\xFF\x00", "\xFF\xFF\xFF\xFF\x00\x00\xFF\xFF", 283 "\xFF\xFF\xFF\xFF\x00\xFF\x00\x00", "\xFF\xFF\xFF\xFF\x00\xFF\x00\xFF", 284 "\xFF\xFF\xFF\xFF\x00\xFF\xFF\x00", "\xFF\xFF\xFF\xFF\x00\xFF\xFF\xFF", 285 "\xFF\xFF\xFF\xFF\xFF\x00\x00\x00", "\xFF\xFF\xFF\xFF\xFF\x00\x00\xFF", 286 "\xFF\xFF\xFF\xFF\xFF\x00\xFF\x00", "\xFF\xFF\xFF\xFF\xFF\x00\xFF\xFF", 287 "\xFF\xFF\xFF\xFF\xFF\xFF\x00\x00", "\xFF\xFF\xFF\xFF\xFF\xFF\x00\xFF", 288 "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x00", "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF" 289 ]; 290 291 /** 292 * IP mapping helper table. 293 * 294 * Indexing this table with each source byte performs the initial bit permutation. 295 * 296 * @var array 297 */ 298 protected static $ipmap = [ 299 0x00, 0x10, 0x01, 0x11, 0x20, 0x30, 0x21, 0x31, 300 0x02, 0x12, 0x03, 0x13, 0x22, 0x32, 0x23, 0x33, 301 0x40, 0x50, 0x41, 0x51, 0x60, 0x70, 0x61, 0x71, 302 0x42, 0x52, 0x43, 0x53, 0x62, 0x72, 0x63, 0x73, 303 0x04, 0x14, 0x05, 0x15, 0x24, 0x34, 0x25, 0x35, 304 0x06, 0x16, 0x07, 0x17, 0x26, 0x36, 0x27, 0x37, 305 0x44, 0x54, 0x45, 0x55, 0x64, 0x74, 0x65, 0x75, 306 0x46, 0x56, 0x47, 0x57, 0x66, 0x76, 0x67, 0x77, 307 0x80, 0x90, 0x81, 0x91, 0xA0, 0xB0, 0xA1, 0xB1, 308 0x82, 0x92, 0x83, 0x93, 0xA2, 0xB2, 0xA3, 0xB3, 309 0xC0, 0xD0, 0xC1, 0xD1, 0xE0, 0xF0, 0xE1, 0xF1, 310 0xC2, 0xD2, 0xC3, 0xD3, 0xE2, 0xF2, 0xE3, 0xF3, 311 0x84, 0x94, 0x85, 0x95, 0xA4, 0xB4, 0xA5, 0xB5, 312 0x86, 0x96, 0x87, 0x97, 0xA6, 0xB6, 0xA7, 0xB7, 313 0xC4, 0xD4, 0xC5, 0xD5, 0xE4, 0xF4, 0xE5, 0xF5, 314 0xC6, 0xD6, 0xC7, 0xD7, 0xE6, 0xF6, 0xE7, 0xF7, 315 0x08, 0x18, 0x09, 0x19, 0x28, 0x38, 0x29, 0x39, 316 0x0A, 0x1A, 0x0B, 0x1B, 0x2A, 0x3A, 0x2B, 0x3B, 317 0x48, 0x58, 0x49, 0x59, 0x68, 0x78, 0x69, 0x79, 318 0x4A, 0x5A, 0x4B, 0x5B, 0x6A, 0x7A, 0x6B, 0x7B, 319 0x0C, 0x1C, 0x0D, 0x1D, 0x2C, 0x3C, 0x2D, 0x3D, 320 0x0E, 0x1E, 0x0F, 0x1F, 0x2E, 0x3E, 0x2F, 0x3F, 321 0x4C, 0x5C, 0x4D, 0x5D, 0x6C, 0x7C, 0x6D, 0x7D, 322 0x4E, 0x5E, 0x4F, 0x5F, 0x6E, 0x7E, 0x6F, 0x7F, 323 0x88, 0x98, 0x89, 0x99, 0xA8, 0xB8, 0xA9, 0xB9, 324 0x8A, 0x9A, 0x8B, 0x9B, 0xAA, 0xBA, 0xAB, 0xBB, 325 0xC8, 0xD8, 0xC9, 0xD9, 0xE8, 0xF8, 0xE9, 0xF9, 326 0xCA, 0xDA, 0xCB, 0xDB, 0xEA, 0xFA, 0xEB, 0xFB, 327 0x8C, 0x9C, 0x8D, 0x9D, 0xAC, 0xBC, 0xAD, 0xBD, 328 0x8E, 0x9E, 0x8F, 0x9F, 0xAE, 0xBE, 0xAF, 0xBF, 329 0xCC, 0xDC, 0xCD, 0xDD, 0xEC, 0xFC, 0xED, 0xFD, 330 0xCE, 0xDE, 0xCF, 0xDF, 0xEE, 0xFE, 0xEF, 0xFF 331 ]; 332 333 /** 334 * Inverse IP mapping helper table. 335 * Indexing this table with a byte value reverses the bit order. 336 * 337 * @var array 338 */ 339 protected static $invipmap = [ 340 0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0, 341 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0, 342 0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8, 343 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8, 344 0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4, 345 0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4, 346 0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC, 347 0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC, 348 0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2, 349 0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2, 350 0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA, 351 0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA, 352 0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6, 353 0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6, 354 0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE, 355 0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE, 356 0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1, 357 0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1, 358 0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9, 359 0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9, 360 0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5, 361 0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5, 362 0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED, 363 0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD, 364 0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3, 365 0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3, 366 0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB, 367 0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB, 368 0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7, 369 0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7, 370 0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF, 371 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF 372 ]; 373 374 /** 375 * Pre-permuted S-box1 376 * 377 * Each box ($sbox1-$sbox8) has been vectorized, then each value pre-permuted using the 378 * P table: concatenation can then be replaced by exclusive ORs. 379 * 380 * @var array 381 */ 382 protected static $sbox1 = [ 383 0x00808200, 0x00000000, 0x00008000, 0x00808202, 384 0x00808002, 0x00008202, 0x00000002, 0x00008000, 385 0x00000200, 0x00808200, 0x00808202, 0x00000200, 386 0x00800202, 0x00808002, 0x00800000, 0x00000002, 387 0x00000202, 0x00800200, 0x00800200, 0x00008200, 388 0x00008200, 0x00808000, 0x00808000, 0x00800202, 389 0x00008002, 0x00800002, 0x00800002, 0x00008002, 390 0x00000000, 0x00000202, 0x00008202, 0x00800000, 391 0x00008000, 0x00808202, 0x00000002, 0x00808000, 392 0x00808200, 0x00800000, 0x00800000, 0x00000200, 393 0x00808002, 0x00008000, 0x00008200, 0x00800002, 394 0x00000200, 0x00000002, 0x00800202, 0x00008202, 395 0x00808202, 0x00008002, 0x00808000, 0x00800202, 396 0x00800002, 0x00000202, 0x00008202, 0x00808200, 397 0x00000202, 0x00800200, 0x00800200, 0x00000000, 398 0x00008002, 0x00008200, 0x00000000, 0x00808002 399 ]; 400 401 /** 402 * Pre-permuted S-box2 403 * 404 * @var array 405 */ 406 protected static $sbox2 = [ 407 0x40084010, 0x40004000, 0x00004000, 0x00084010, 408 0x00080000, 0x00000010, 0x40080010, 0x40004010, 409 0x40000010, 0x40084010, 0x40084000, 0x40000000, 410 0x40004000, 0x00080000, 0x00000010, 0x40080010, 411 0x00084000, 0x00080010, 0x40004010, 0x00000000, 412 0x40000000, 0x00004000, 0x00084010, 0x40080000, 413 0x00080010, 0x40000010, 0x00000000, 0x00084000, 414 0x00004010, 0x40084000, 0x40080000, 0x00004010, 415 0x00000000, 0x00084010, 0x40080010, 0x00080000, 416 0x40004010, 0x40080000, 0x40084000, 0x00004000, 417 0x40080000, 0x40004000, 0x00000010, 0x40084010, 418 0x00084010, 0x00000010, 0x00004000, 0x40000000, 419 0x00004010, 0x40084000, 0x00080000, 0x40000010, 420 0x00080010, 0x40004010, 0x40000010, 0x00080010, 421 0x00084000, 0x00000000, 0x40004000, 0x00004010, 422 0x40000000, 0x40080010, 0x40084010, 0x00084000 423 ]; 424 425 /** 426 * Pre-permuted S-box3 427 * 428 * @var array 429 */ 430 protected static $sbox3 = [ 431 0x00000104, 0x04010100, 0x00000000, 0x04010004, 432 0x04000100, 0x00000000, 0x00010104, 0x04000100, 433 0x00010004, 0x04000004, 0x04000004, 0x00010000, 434 0x04010104, 0x00010004, 0x04010000, 0x00000104, 435 0x04000000, 0x00000004, 0x04010100, 0x00000100, 436 0x00010100, 0x04010000, 0x04010004, 0x00010104, 437 0x04000104, 0x00010100, 0x00010000, 0x04000104, 438 0x00000004, 0x04010104, 0x00000100, 0x04000000, 439 0x04010100, 0x04000000, 0x00010004, 0x00000104, 440 0x00010000, 0x04010100, 0x04000100, 0x00000000, 441 0x00000100, 0x00010004, 0x04010104, 0x04000100, 442 0x04000004, 0x00000100, 0x00000000, 0x04010004, 443 0x04000104, 0x00010000, 0x04000000, 0x04010104, 444 0x00000004, 0x00010104, 0x00010100, 0x04000004, 445 0x04010000, 0x04000104, 0x00000104, 0x04010000, 446 0x00010104, 0x00000004, 0x04010004, 0x00010100 447 ]; 448 449 /** 450 * Pre-permuted S-box4 451 * 452 * @var array 453 */ 454 protected static $sbox4 = [ 455 0x80401000, 0x80001040, 0x80001040, 0x00000040, 456 0x00401040, 0x80400040, 0x80400000, 0x80001000, 457 0x00000000, 0x00401000, 0x00401000, 0x80401040, 458 0x80000040, 0x00000000, 0x00400040, 0x80400000, 459 0x80000000, 0x00001000, 0x00400000, 0x80401000, 460 0x00000040, 0x00400000, 0x80001000, 0x00001040, 461 0x80400040, 0x80000000, 0x00001040, 0x00400040, 462 0x00001000, 0x00401040, 0x80401040, 0x80000040, 463 0x00400040, 0x80400000, 0x00401000, 0x80401040, 464 0x80000040, 0x00000000, 0x00000000, 0x00401000, 465 0x00001040, 0x00400040, 0x80400040, 0x80000000, 466 0x80401000, 0x80001040, 0x80001040, 0x00000040, 467 0x80401040, 0x80000040, 0x80000000, 0x00001000, 468 0x80400000, 0x80001000, 0x00401040, 0x80400040, 469 0x80001000, 0x00001040, 0x00400000, 0x80401000, 470 0x00000040, 0x00400000, 0x00001000, 0x00401040 471 ]; 472 473 /** 474 * Pre-permuted S-box5 475 * 476 * @var array 477 */ 478 protected static $sbox5 = [ 479 0x00000080, 0x01040080, 0x01040000, 0x21000080, 480 0x00040000, 0x00000080, 0x20000000, 0x01040000, 481 0x20040080, 0x00040000, 0x01000080, 0x20040080, 482 0x21000080, 0x21040000, 0x00040080, 0x20000000, 483 0x01000000, 0x20040000, 0x20040000, 0x00000000, 484 0x20000080, 0x21040080, 0x21040080, 0x01000080, 485 0x21040000, 0x20000080, 0x00000000, 0x21000000, 486 0x01040080, 0x01000000, 0x21000000, 0x00040080, 487 0x00040000, 0x21000080, 0x00000080, 0x01000000, 488 0x20000000, 0x01040000, 0x21000080, 0x20040080, 489 0x01000080, 0x20000000, 0x21040000, 0x01040080, 490 0x20040080, 0x00000080, 0x01000000, 0x21040000, 491 0x21040080, 0x00040080, 0x21000000, 0x21040080, 492 0x01040000, 0x00000000, 0x20040000, 0x21000000, 493 0x00040080, 0x01000080, 0x20000080, 0x00040000, 494 0x00000000, 0x20040000, 0x01040080, 0x20000080 495 ]; 496 497 /** 498 * Pre-permuted S-box6 499 * 500 * @var array 501 */ 502 protected static $sbox6 = [ 503 0x10000008, 0x10200000, 0x00002000, 0x10202008, 504 0x10200000, 0x00000008, 0x10202008, 0x00200000, 505 0x10002000, 0x00202008, 0x00200000, 0x10000008, 506 0x00200008, 0x10002000, 0x10000000, 0x00002008, 507 0x00000000, 0x00200008, 0x10002008, 0x00002000, 508 0x00202000, 0x10002008, 0x00000008, 0x10200008, 509 0x10200008, 0x00000000, 0x00202008, 0x10202000, 510 0x00002008, 0x00202000, 0x10202000, 0x10000000, 511 0x10002000, 0x00000008, 0x10200008, 0x00202000, 512 0x10202008, 0x00200000, 0x00002008, 0x10000008, 513 0x00200000, 0x10002000, 0x10000000, 0x00002008, 514 0x10000008, 0x10202008, 0x00202000, 0x10200000, 515 0x00202008, 0x10202000, 0x00000000, 0x10200008, 516 0x00000008, 0x00002000, 0x10200000, 0x00202008, 517 0x00002000, 0x00200008, 0x10002008, 0x00000000, 518 0x10202000, 0x10000000, 0x00200008, 0x10002008 519 ]; 520 521 /** 522 * Pre-permuted S-box7 523 * 524 * @var array 525 */ 526 protected static $sbox7 = [ 527 0x00100000, 0x02100001, 0x02000401, 0x00000000, 528 0x00000400, 0x02000401, 0x00100401, 0x02100400, 529 0x02100401, 0x00100000, 0x00000000, 0x02000001, 530 0x00000001, 0x02000000, 0x02100001, 0x00000401, 531 0x02000400, 0x00100401, 0x00100001, 0x02000400, 532 0x02000001, 0x02100000, 0x02100400, 0x00100001, 533 0x02100000, 0x00000400, 0x00000401, 0x02100401, 534 0x00100400, 0x00000001, 0x02000000, 0x00100400, 535 0x02000000, 0x00100400, 0x00100000, 0x02000401, 536 0x02000401, 0x02100001, 0x02100001, 0x00000001, 537 0x00100001, 0x02000000, 0x02000400, 0x00100000, 538 0x02100400, 0x00000401, 0x00100401, 0x02100400, 539 0x00000401, 0x02000001, 0x02100401, 0x02100000, 540 0x00100400, 0x00000000, 0x00000001, 0x02100401, 541 0x00000000, 0x00100401, 0x02100000, 0x00000400, 542 0x02000001, 0x02000400, 0x00000400, 0x00100001 543 ]; 544 545 /** 546 * Pre-permuted S-box8 547 * 548 * @var array 549 */ 550 protected static $sbox8 = [ 551 0x08000820, 0x00000800, 0x00020000, 0x08020820, 552 0x08000000, 0x08000820, 0x00000020, 0x08000000, 553 0x00020020, 0x08020000, 0x08020820, 0x00020800, 554 0x08020800, 0x00020820, 0x00000800, 0x00000020, 555 0x08020000, 0x08000020, 0x08000800, 0x00000820, 556 0x00020800, 0x00020020, 0x08020020, 0x08020800, 557 0x00000820, 0x00000000, 0x00000000, 0x08020020, 558 0x08000020, 0x08000800, 0x00020820, 0x00020000, 559 0x00020820, 0x00020000, 0x08020800, 0x00000800, 560 0x00000020, 0x08020020, 0x00000800, 0x00020820, 561 0x08000800, 0x00000020, 0x08000020, 0x08020000, 562 0x08020020, 0x08000000, 0x00020000, 0x08000820, 563 0x00000000, 0x08020820, 0x00020020, 0x08000020, 564 0x08020000, 0x08000800, 0x08000820, 0x00000000, 565 0x08020820, 0x00020800, 0x00020800, 0x00000820, 566 0x00000820, 0x00020020, 0x08000000, 0x08020800 567 ]; 568 569 /** 570 * Default Constructor. 571 * 572 * @param string $mode 573 * @throws BadModeException if an invalid / unsupported mode is provided 574 */ 575 public function __construct($mode) 576 { 577 parent::__construct($mode); 578 579 if ($this->mode == self::MODE_STREAM) { 580 throw new BadModeException('Block ciphers cannot be ran in stream mode'); 581 } 582 } 583 584 /** 585 * Test for engine validity 586 * 587 * This is mainly just a wrapper to set things up for \phpseclib3\Crypt\Common\SymmetricKey::isValidEngine() 588 * 589 * @see \phpseclib3\Crypt\Common\SymmetricKey::isValidEngine() 590 * @param int $engine 591 * @return bool 592 */ 593 protected function isValidEngineHelper($engine) 594 { 595 if ($this->key_length_max == 8) { 596 if ($engine == self::ENGINE_OPENSSL) { 597 // quoting https://www.openssl.org/news/openssl-3.0-notes.html, OpenSSL 3.0.1 598 // "Moved all variations of the EVP ciphers CAST5, BF, IDEA, SEED, RC2, RC4, RC5, and DES to the legacy provider" 599 // in theory openssl_get_cipher_methods() should catch this but, on GitHub Actions, at least, it does not 600 if (defined('OPENSSL_VERSION_TEXT') && version_compare(preg_replace('#OpenSSL (\d+\.\d+\.\d+) .*#', '$1', OPENSSL_VERSION_TEXT), '3.0.1', '>=')) { 601 return false; 602 } 603 $this->cipher_name_openssl_ecb = 'des-ecb'; 604 $this->cipher_name_openssl = 'des-' . $this->openssl_translate_mode(); 605 } 606 } 607 608 return parent::isValidEngineHelper($engine); 609 } 610 611 /** 612 * Sets the key. 613 * 614 * Keys must be 64-bits long or 8 bytes long. 615 * 616 * DES also requires that every eighth bit be a parity bit, however, we'll ignore that. 617 * 618 * @see \phpseclib3\Crypt\Common\SymmetricKey::setKey() 619 * @param string $key 620 */ 621 public function setKey($key) 622 { 623 if (!($this instanceof TripleDES) && strlen($key) != 8) { 624 throw new \LengthException('Key of size ' . strlen($key) . ' not supported by this algorithm. Only keys of size 8 are supported'); 625 } 626 627 // Sets the key 628 parent::setKey($key); 629 } 630 631 /** 632 * Encrypts a block 633 * 634 * @see \phpseclib3\Crypt\Common\SymmetricKey::encryptBlock() 635 * @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt() 636 * @see self::encrypt() 637 * @param string $in 638 * @return string 639 */ 640 protected function encryptBlock($in) 641 { 642 return $this->processBlock($in, self::ENCRYPT); 643 } 644 645 /** 646 * Decrypts a block 647 * 648 * @see \phpseclib3\Crypt\Common\SymmetricKey::decryptBlock() 649 * @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt() 650 * @see self::decrypt() 651 * @param string $in 652 * @return string 653 */ 654 protected function decryptBlock($in) 655 { 656 return $this->processBlock($in, self::DECRYPT); 657 } 658 659 /** 660 * Encrypts or decrypts a 64-bit block 661 * 662 * $mode should be either self::ENCRYPT or self::DECRYPT. See 663 * {@link http://en.wikipedia.org/wiki/Image:Feistel.png Feistel.png} to get a general 664 * idea of what this function does. 665 * 666 * @see self::encryptBlock() 667 * @see self::decryptBlock() 668 * @param string $block 669 * @param int $mode 670 * @return string 671 */ 672 private function processBlock($block, $mode) 673 { 674 static $sbox1, $sbox2, $sbox3, $sbox4, $sbox5, $sbox6, $sbox7, $sbox8, $shuffleip, $shuffleinvip; 675 if (!$sbox1) { 676 $sbox1 = array_map('intval', self::$sbox1); 677 $sbox2 = array_map('intval', self::$sbox2); 678 $sbox3 = array_map('intval', self::$sbox3); 679 $sbox4 = array_map('intval', self::$sbox4); 680 $sbox5 = array_map('intval', self::$sbox5); 681 $sbox6 = array_map('intval', self::$sbox6); 682 $sbox7 = array_map('intval', self::$sbox7); 683 $sbox8 = array_map('intval', self::$sbox8); 684 /* Merge $shuffle with $[inv]ipmap */ 685 for ($i = 0; $i < 256; ++$i) { 686 $shuffleip[] = self::$shuffle[self::$ipmap[$i]]; 687 $shuffleinvip[] = self::$shuffle[self::$invipmap[$i]]; 688 } 689 } 690 691 $keys = $this->keys[$mode]; 692 $ki = -1; 693 694 // Do the initial IP permutation. 695 $t = unpack('Nl/Nr', $block); 696 list($l, $r) = [$t['l'], $t['r']]; 697 $block = ($shuffleip[ $r & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") | 698 ($shuffleip[($r >> 8) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") | 699 ($shuffleip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") | 700 ($shuffleip[($r >> 24) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") | 701 ($shuffleip[ $l & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") | 702 ($shuffleip[($l >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") | 703 ($shuffleip[($l >> 16) & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") | 704 ($shuffleip[($l >> 24) & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01"); 705 706 // Extract L0 and R0. 707 $t = unpack('Nl/Nr', $block); 708 list($l, $r) = [$t['l'], $t['r']]; 709 710 for ($des_round = 0; $des_round < $this->des_rounds; ++$des_round) { 711 // Perform the 16 steps. 712 for ($i = 0; $i < 16; $i++) { 713 // start of "the Feistel (F) function" - see the following URL: 714 // http://en.wikipedia.org/wiki/Image:Data_Encryption_Standard_InfoBox_Diagram.png 715 // Merge key schedule. 716 $b1 = (($r >> 3) & 0x1FFFFFFF) ^ ($r << 29) ^ $keys[++$ki]; 717 $b2 = (($r >> 31) & 0x00000001) ^ ($r << 1) ^ $keys[++$ki]; 718 719 // S-box indexing. 720 $t = $sbox1[($b1 >> 24) & 0x3F] ^ $sbox2[($b2 >> 24) & 0x3F] ^ 721 $sbox3[($b1 >> 16) & 0x3F] ^ $sbox4[($b2 >> 16) & 0x3F] ^ 722 $sbox5[($b1 >> 8) & 0x3F] ^ $sbox6[($b2 >> 8) & 0x3F] ^ 723 $sbox7[ $b1 & 0x3F] ^ $sbox8[ $b2 & 0x3F] ^ $l; 724 // end of "the Feistel (F) function" 725 726 $l = $r; 727 $r = $t; 728 } 729 730 // Last step should not permute L & R. 731 $t = $l; 732 $l = $r; 733 $r = $t; 734 } 735 736 // Perform the inverse IP permutation. 737 return ($shuffleinvip[($r >> 24) & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") | 738 ($shuffleinvip[($l >> 24) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") | 739 ($shuffleinvip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") | 740 ($shuffleinvip[($l >> 16) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") | 741 ($shuffleinvip[($r >> 8) & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") | 742 ($shuffleinvip[($l >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") | 743 ($shuffleinvip[ $r & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") | 744 ($shuffleinvip[ $l & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01"); 745 } 746 747 /** 748 * Creates the key schedule 749 * 750 * @see \phpseclib3\Crypt\Common\SymmetricKey::setupKey() 751 */ 752 protected function setupKey() 753 { 754 if (isset($this->kl['key']) && $this->key === $this->kl['key'] && $this->des_rounds === $this->kl['des_rounds']) { 755 // already expanded 756 return; 757 } 758 $this->kl = ['key' => $this->key, 'des_rounds' => $this->des_rounds]; 759 760 static $shifts = [ // number of key bits shifted per round 761 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 762 ]; 763 764 static $pc1map = [ 765 0x00, 0x00, 0x08, 0x08, 0x04, 0x04, 0x0C, 0x0C, 766 0x02, 0x02, 0x0A, 0x0A, 0x06, 0x06, 0x0E, 0x0E, 767 0x10, 0x10, 0x18, 0x18, 0x14, 0x14, 0x1C, 0x1C, 768 0x12, 0x12, 0x1A, 0x1A, 0x16, 0x16, 0x1E, 0x1E, 769 0x20, 0x20, 0x28, 0x28, 0x24, 0x24, 0x2C, 0x2C, 770 0x22, 0x22, 0x2A, 0x2A, 0x26, 0x26, 0x2E, 0x2E, 771 0x30, 0x30, 0x38, 0x38, 0x34, 0x34, 0x3C, 0x3C, 772 0x32, 0x32, 0x3A, 0x3A, 0x36, 0x36, 0x3E, 0x3E, 773 0x40, 0x40, 0x48, 0x48, 0x44, 0x44, 0x4C, 0x4C, 774 0x42, 0x42, 0x4A, 0x4A, 0x46, 0x46, 0x4E, 0x4E, 775 0x50, 0x50, 0x58, 0x58, 0x54, 0x54, 0x5C, 0x5C, 776 0x52, 0x52, 0x5A, 0x5A, 0x56, 0x56, 0x5E, 0x5E, 777 0x60, 0x60, 0x68, 0x68, 0x64, 0x64, 0x6C, 0x6C, 778 0x62, 0x62, 0x6A, 0x6A, 0x66, 0x66, 0x6E, 0x6E, 779 0x70, 0x70, 0x78, 0x78, 0x74, 0x74, 0x7C, 0x7C, 780 0x72, 0x72, 0x7A, 0x7A, 0x76, 0x76, 0x7E, 0x7E, 781 0x80, 0x80, 0x88, 0x88, 0x84, 0x84, 0x8C, 0x8C, 782 0x82, 0x82, 0x8A, 0x8A, 0x86, 0x86, 0x8E, 0x8E, 783 0x90, 0x90, 0x98, 0x98, 0x94, 0x94, 0x9C, 0x9C, 784 0x92, 0x92, 0x9A, 0x9A, 0x96, 0x96, 0x9E, 0x9E, 785 0xA0, 0xA0, 0xA8, 0xA8, 0xA4, 0xA4, 0xAC, 0xAC, 786 0xA2, 0xA2, 0xAA, 0xAA, 0xA6, 0xA6, 0xAE, 0xAE, 787 0xB0, 0xB0, 0xB8, 0xB8, 0xB4, 0xB4, 0xBC, 0xBC, 788 0xB2, 0xB2, 0xBA, 0xBA, 0xB6, 0xB6, 0xBE, 0xBE, 789 0xC0, 0xC0, 0xC8, 0xC8, 0xC4, 0xC4, 0xCC, 0xCC, 790 0xC2, 0xC2, 0xCA, 0xCA, 0xC6, 0xC6, 0xCE, 0xCE, 791 0xD0, 0xD0, 0xD8, 0xD8, 0xD4, 0xD4, 0xDC, 0xDC, 792 0xD2, 0xD2, 0xDA, 0xDA, 0xD6, 0xD6, 0xDE, 0xDE, 793 0xE0, 0xE0, 0xE8, 0xE8, 0xE4, 0xE4, 0xEC, 0xEC, 794 0xE2, 0xE2, 0xEA, 0xEA, 0xE6, 0xE6, 0xEE, 0xEE, 795 0xF0, 0xF0, 0xF8, 0xF8, 0xF4, 0xF4, 0xFC, 0xFC, 796 0xF2, 0xF2, 0xFA, 0xFA, 0xF6, 0xF6, 0xFE, 0xFE 797 ]; 798 799 // Mapping tables for the PC-2 transformation. 800 static $pc2mapc1 = [ 801 0x00000000, 0x00000400, 0x00200000, 0x00200400, 802 0x00000001, 0x00000401, 0x00200001, 0x00200401, 803 0x02000000, 0x02000400, 0x02200000, 0x02200400, 804 0x02000001, 0x02000401, 0x02200001, 0x02200401 805 ]; 806 static $pc2mapc2 = [ 807 0x00000000, 0x00000800, 0x08000000, 0x08000800, 808 0x00010000, 0x00010800, 0x08010000, 0x08010800, 809 0x00000000, 0x00000800, 0x08000000, 0x08000800, 810 0x00010000, 0x00010800, 0x08010000, 0x08010800, 811 0x00000100, 0x00000900, 0x08000100, 0x08000900, 812 0x00010100, 0x00010900, 0x08010100, 0x08010900, 813 0x00000100, 0x00000900, 0x08000100, 0x08000900, 814 0x00010100, 0x00010900, 0x08010100, 0x08010900, 815 0x00000010, 0x00000810, 0x08000010, 0x08000810, 816 0x00010010, 0x00010810, 0x08010010, 0x08010810, 817 0x00000010, 0x00000810, 0x08000010, 0x08000810, 818 0x00010010, 0x00010810, 0x08010010, 0x08010810, 819 0x00000110, 0x00000910, 0x08000110, 0x08000910, 820 0x00010110, 0x00010910, 0x08010110, 0x08010910, 821 0x00000110, 0x00000910, 0x08000110, 0x08000910, 822 0x00010110, 0x00010910, 0x08010110, 0x08010910, 823 0x00040000, 0x00040800, 0x08040000, 0x08040800, 824 0x00050000, 0x00050800, 0x08050000, 0x08050800, 825 0x00040000, 0x00040800, 0x08040000, 0x08040800, 826 0x00050000, 0x00050800, 0x08050000, 0x08050800, 827 0x00040100, 0x00040900, 0x08040100, 0x08040900, 828 0x00050100, 0x00050900, 0x08050100, 0x08050900, 829 0x00040100, 0x00040900, 0x08040100, 0x08040900, 830 0x00050100, 0x00050900, 0x08050100, 0x08050900, 831 0x00040010, 0x00040810, 0x08040010, 0x08040810, 832 0x00050010, 0x00050810, 0x08050010, 0x08050810, 833 0x00040010, 0x00040810, 0x08040010, 0x08040810, 834 0x00050010, 0x00050810, 0x08050010, 0x08050810, 835 0x00040110, 0x00040910, 0x08040110, 0x08040910, 836 0x00050110, 0x00050910, 0x08050110, 0x08050910, 837 0x00040110, 0x00040910, 0x08040110, 0x08040910, 838 0x00050110, 0x00050910, 0x08050110, 0x08050910, 839 0x01000000, 0x01000800, 0x09000000, 0x09000800, 840 0x01010000, 0x01010800, 0x09010000, 0x09010800, 841 0x01000000, 0x01000800, 0x09000000, 0x09000800, 842 0x01010000, 0x01010800, 0x09010000, 0x09010800, 843 0x01000100, 0x01000900, 0x09000100, 0x09000900, 844 0x01010100, 0x01010900, 0x09010100, 0x09010900, 845 0x01000100, 0x01000900, 0x09000100, 0x09000900, 846 0x01010100, 0x01010900, 0x09010100, 0x09010900, 847 0x01000010, 0x01000810, 0x09000010, 0x09000810, 848 0x01010010, 0x01010810, 0x09010010, 0x09010810, 849 0x01000010, 0x01000810, 0x09000010, 0x09000810, 850 0x01010010, 0x01010810, 0x09010010, 0x09010810, 851 0x01000110, 0x01000910, 0x09000110, 0x09000910, 852 0x01010110, 0x01010910, 0x09010110, 0x09010910, 853 0x01000110, 0x01000910, 0x09000110, 0x09000910, 854 0x01010110, 0x01010910, 0x09010110, 0x09010910, 855 0x01040000, 0x01040800, 0x09040000, 0x09040800, 856 0x01050000, 0x01050800, 0x09050000, 0x09050800, 857 0x01040000, 0x01040800, 0x09040000, 0x09040800, 858 0x01050000, 0x01050800, 0x09050000, 0x09050800, 859 0x01040100, 0x01040900, 0x09040100, 0x09040900, 860 0x01050100, 0x01050900, 0x09050100, 0x09050900, 861 0x01040100, 0x01040900, 0x09040100, 0x09040900, 862 0x01050100, 0x01050900, 0x09050100, 0x09050900, 863 0x01040010, 0x01040810, 0x09040010, 0x09040810, 864 0x01050010, 0x01050810, 0x09050010, 0x09050810, 865 0x01040010, 0x01040810, 0x09040010, 0x09040810, 866 0x01050010, 0x01050810, 0x09050010, 0x09050810, 867 0x01040110, 0x01040910, 0x09040110, 0x09040910, 868 0x01050110, 0x01050910, 0x09050110, 0x09050910, 869 0x01040110, 0x01040910, 0x09040110, 0x09040910, 870 0x01050110, 0x01050910, 0x09050110, 0x09050910 871 ]; 872 static $pc2mapc3 = [ 873 0x00000000, 0x00000004, 0x00001000, 0x00001004, 874 0x00000000, 0x00000004, 0x00001000, 0x00001004, 875 0x10000000, 0x10000004, 0x10001000, 0x10001004, 876 0x10000000, 0x10000004, 0x10001000, 0x10001004, 877 0x00000020, 0x00000024, 0x00001020, 0x00001024, 878 0x00000020, 0x00000024, 0x00001020, 0x00001024, 879 0x10000020, 0x10000024, 0x10001020, 0x10001024, 880 0x10000020, 0x10000024, 0x10001020, 0x10001024, 881 0x00080000, 0x00080004, 0x00081000, 0x00081004, 882 0x00080000, 0x00080004, 0x00081000, 0x00081004, 883 0x10080000, 0x10080004, 0x10081000, 0x10081004, 884 0x10080000, 0x10080004, 0x10081000, 0x10081004, 885 0x00080020, 0x00080024, 0x00081020, 0x00081024, 886 0x00080020, 0x00080024, 0x00081020, 0x00081024, 887 0x10080020, 0x10080024, 0x10081020, 0x10081024, 888 0x10080020, 0x10080024, 0x10081020, 0x10081024, 889 0x20000000, 0x20000004, 0x20001000, 0x20001004, 890 0x20000000, 0x20000004, 0x20001000, 0x20001004, 891 0x30000000, 0x30000004, 0x30001000, 0x30001004, 892 0x30000000, 0x30000004, 0x30001000, 0x30001004, 893 0x20000020, 0x20000024, 0x20001020, 0x20001024, 894 0x20000020, 0x20000024, 0x20001020, 0x20001024, 895 0x30000020, 0x30000024, 0x30001020, 0x30001024, 896 0x30000020, 0x30000024, 0x30001020, 0x30001024, 897 0x20080000, 0x20080004, 0x20081000, 0x20081004, 898 0x20080000, 0x20080004, 0x20081000, 0x20081004, 899 0x30080000, 0x30080004, 0x30081000, 0x30081004, 900 0x30080000, 0x30080004, 0x30081000, 0x30081004, 901 0x20080020, 0x20080024, 0x20081020, 0x20081024, 902 0x20080020, 0x20080024, 0x20081020, 0x20081024, 903 0x30080020, 0x30080024, 0x30081020, 0x30081024, 904 0x30080020, 0x30080024, 0x30081020, 0x30081024, 905 0x00000002, 0x00000006, 0x00001002, 0x00001006, 906 0x00000002, 0x00000006, 0x00001002, 0x00001006, 907 0x10000002, 0x10000006, 0x10001002, 0x10001006, 908 0x10000002, 0x10000006, 0x10001002, 0x10001006, 909 0x00000022, 0x00000026, 0x00001022, 0x00001026, 910 0x00000022, 0x00000026, 0x00001022, 0x00001026, 911 0x10000022, 0x10000026, 0x10001022, 0x10001026, 912 0x10000022, 0x10000026, 0x10001022, 0x10001026, 913 0x00080002, 0x00080006, 0x00081002, 0x00081006, 914 0x00080002, 0x00080006, 0x00081002, 0x00081006, 915 0x10080002, 0x10080006, 0x10081002, 0x10081006, 916 0x10080002, 0x10080006, 0x10081002, 0x10081006, 917 0x00080022, 0x00080026, 0x00081022, 0x00081026, 918 0x00080022, 0x00080026, 0x00081022, 0x00081026, 919 0x10080022, 0x10080026, 0x10081022, 0x10081026, 920 0x10080022, 0x10080026, 0x10081022, 0x10081026, 921 0x20000002, 0x20000006, 0x20001002, 0x20001006, 922 0x20000002, 0x20000006, 0x20001002, 0x20001006, 923 0x30000002, 0x30000006, 0x30001002, 0x30001006, 924 0x30000002, 0x30000006, 0x30001002, 0x30001006, 925 0x20000022, 0x20000026, 0x20001022, 0x20001026, 926 0x20000022, 0x20000026, 0x20001022, 0x20001026, 927 0x30000022, 0x30000026, 0x30001022, 0x30001026, 928 0x30000022, 0x30000026, 0x30001022, 0x30001026, 929 0x20080002, 0x20080006, 0x20081002, 0x20081006, 930 0x20080002, 0x20080006, 0x20081002, 0x20081006, 931 0x30080002, 0x30080006, 0x30081002, 0x30081006, 932 0x30080002, 0x30080006, 0x30081002, 0x30081006, 933 0x20080022, 0x20080026, 0x20081022, 0x20081026, 934 0x20080022, 0x20080026, 0x20081022, 0x20081026, 935 0x30080022, 0x30080026, 0x30081022, 0x30081026, 936 0x30080022, 0x30080026, 0x30081022, 0x30081026 937 ]; 938 static $pc2mapc4 = [ 939 0x00000000, 0x00100000, 0x00000008, 0x00100008, 940 0x00000200, 0x00100200, 0x00000208, 0x00100208, 941 0x00000000, 0x00100000, 0x00000008, 0x00100008, 942 0x00000200, 0x00100200, 0x00000208, 0x00100208, 943 0x04000000, 0x04100000, 0x04000008, 0x04100008, 944 0x04000200, 0x04100200, 0x04000208, 0x04100208, 945 0x04000000, 0x04100000, 0x04000008, 0x04100008, 946 0x04000200, 0x04100200, 0x04000208, 0x04100208, 947 0x00002000, 0x00102000, 0x00002008, 0x00102008, 948 0x00002200, 0x00102200, 0x00002208, 0x00102208, 949 0x00002000, 0x00102000, 0x00002008, 0x00102008, 950 0x00002200, 0x00102200, 0x00002208, 0x00102208, 951 0x04002000, 0x04102000, 0x04002008, 0x04102008, 952 0x04002200, 0x04102200, 0x04002208, 0x04102208, 953 0x04002000, 0x04102000, 0x04002008, 0x04102008, 954 0x04002200, 0x04102200, 0x04002208, 0x04102208, 955 0x00000000, 0x00100000, 0x00000008, 0x00100008, 956 0x00000200, 0x00100200, 0x00000208, 0x00100208, 957 0x00000000, 0x00100000, 0x00000008, 0x00100008, 958 0x00000200, 0x00100200, 0x00000208, 0x00100208, 959 0x04000000, 0x04100000, 0x04000008, 0x04100008, 960 0x04000200, 0x04100200, 0x04000208, 0x04100208, 961 0x04000000, 0x04100000, 0x04000008, 0x04100008, 962 0x04000200, 0x04100200, 0x04000208, 0x04100208, 963 0x00002000, 0x00102000, 0x00002008, 0x00102008, 964 0x00002200, 0x00102200, 0x00002208, 0x00102208, 965 0x00002000, 0x00102000, 0x00002008, 0x00102008, 966 0x00002200, 0x00102200, 0x00002208, 0x00102208, 967 0x04002000, 0x04102000, 0x04002008, 0x04102008, 968 0x04002200, 0x04102200, 0x04002208, 0x04102208, 969 0x04002000, 0x04102000, 0x04002008, 0x04102008, 970 0x04002200, 0x04102200, 0x04002208, 0x04102208, 971 0x00020000, 0x00120000, 0x00020008, 0x00120008, 972 0x00020200, 0x00120200, 0x00020208, 0x00120208, 973 0x00020000, 0x00120000, 0x00020008, 0x00120008, 974 0x00020200, 0x00120200, 0x00020208, 0x00120208, 975 0x04020000, 0x04120000, 0x04020008, 0x04120008, 976 0x04020200, 0x04120200, 0x04020208, 0x04120208, 977 0x04020000, 0x04120000, 0x04020008, 0x04120008, 978 0x04020200, 0x04120200, 0x04020208, 0x04120208, 979 0x00022000, 0x00122000, 0x00022008, 0x00122008, 980 0x00022200, 0x00122200, 0x00022208, 0x00122208, 981 0x00022000, 0x00122000, 0x00022008, 0x00122008, 982 0x00022200, 0x00122200, 0x00022208, 0x00122208, 983 0x04022000, 0x04122000, 0x04022008, 0x04122008, 984 0x04022200, 0x04122200, 0x04022208, 0x04122208, 985 0x04022000, 0x04122000, 0x04022008, 0x04122008, 986 0x04022200, 0x04122200, 0x04022208, 0x04122208, 987 0x00020000, 0x00120000, 0x00020008, 0x00120008, 988 0x00020200, 0x00120200, 0x00020208, 0x00120208, 989 0x00020000, 0x00120000, 0x00020008, 0x00120008, 990 0x00020200, 0x00120200, 0x00020208, 0x00120208, 991 0x04020000, 0x04120000, 0x04020008, 0x04120008, 992 0x04020200, 0x04120200, 0x04020208, 0x04120208, 993 0x04020000, 0x04120000, 0x04020008, 0x04120008, 994 0x04020200, 0x04120200, 0x04020208, 0x04120208, 995 0x00022000, 0x00122000, 0x00022008, 0x00122008, 996 0x00022200, 0x00122200, 0x00022208, 0x00122208, 997 0x00022000, 0x00122000, 0x00022008, 0x00122008, 998 0x00022200, 0x00122200, 0x00022208, 0x00122208, 999 0x04022000, 0x04122000, 0x04022008, 0x04122008, 1000 0x04022200, 0x04122200, 0x04022208, 0x04122208, 1001 0x04022000, 0x04122000, 0x04022008, 0x04122008, 1002 0x04022200, 0x04122200, 0x04022208, 0x04122208 1003 ]; 1004 static $pc2mapd1 = [ 1005 0x00000000, 0x00000001, 0x08000000, 0x08000001, 1006 0x00200000, 0x00200001, 0x08200000, 0x08200001, 1007 0x00000002, 0x00000003, 0x08000002, 0x08000003, 1008 0x00200002, 0x00200003, 0x08200002, 0x08200003 1009 ]; 1010 static $pc2mapd2 = [ 1011 0x00000000, 0x00100000, 0x00000800, 0x00100800, 1012 0x00000000, 0x00100000, 0x00000800, 0x00100800, 1013 0x04000000, 0x04100000, 0x04000800, 0x04100800, 1014 0x04000000, 0x04100000, 0x04000800, 0x04100800, 1015 0x00000004, 0x00100004, 0x00000804, 0x00100804, 1016 0x00000004, 0x00100004, 0x00000804, 0x00100804, 1017 0x04000004, 0x04100004, 0x04000804, 0x04100804, 1018 0x04000004, 0x04100004, 0x04000804, 0x04100804, 1019 0x00000000, 0x00100000, 0x00000800, 0x00100800, 1020 0x00000000, 0x00100000, 0x00000800, 0x00100800, 1021 0x04000000, 0x04100000, 0x04000800, 0x04100800, 1022 0x04000000, 0x04100000, 0x04000800, 0x04100800, 1023 0x00000004, 0x00100004, 0x00000804, 0x00100804, 1024 0x00000004, 0x00100004, 0x00000804, 0x00100804, 1025 0x04000004, 0x04100004, 0x04000804, 0x04100804, 1026 0x04000004, 0x04100004, 0x04000804, 0x04100804, 1027 0x00000200, 0x00100200, 0x00000A00, 0x00100A00, 1028 0x00000200, 0x00100200, 0x00000A00, 0x00100A00, 1029 0x04000200, 0x04100200, 0x04000A00, 0x04100A00, 1030 0x04000200, 0x04100200, 0x04000A00, 0x04100A00, 1031 0x00000204, 0x00100204, 0x00000A04, 0x00100A04, 1032 0x00000204, 0x00100204, 0x00000A04, 0x00100A04, 1033 0x04000204, 0x04100204, 0x04000A04, 0x04100A04, 1034 0x04000204, 0x04100204, 0x04000A04, 0x04100A04, 1035 0x00000200, 0x00100200, 0x00000A00, 0x00100A00, 1036 0x00000200, 0x00100200, 0x00000A00, 0x00100A00, 1037 0x04000200, 0x04100200, 0x04000A00, 0x04100A00, 1038 0x04000200, 0x04100200, 0x04000A00, 0x04100A00, 1039 0x00000204, 0x00100204, 0x00000A04, 0x00100A04, 1040 0x00000204, 0x00100204, 0x00000A04, 0x00100A04, 1041 0x04000204, 0x04100204, 0x04000A04, 0x04100A04, 1042 0x04000204, 0x04100204, 0x04000A04, 0x04100A04, 1043 0x00020000, 0x00120000, 0x00020800, 0x00120800, 1044 0x00020000, 0x00120000, 0x00020800, 0x00120800, 1045 0x04020000, 0x04120000, 0x04020800, 0x04120800, 1046 0x04020000, 0x04120000, 0x04020800, 0x04120800, 1047 0x00020004, 0x00120004, 0x00020804, 0x00120804, 1048 0x00020004, 0x00120004, 0x00020804, 0x00120804, 1049 0x04020004, 0x04120004, 0x04020804, 0x04120804, 1050 0x04020004, 0x04120004, 0x04020804, 0x04120804, 1051 0x00020000, 0x00120000, 0x00020800, 0x00120800, 1052 0x00020000, 0x00120000, 0x00020800, 0x00120800, 1053 0x04020000, 0x04120000, 0x04020800, 0x04120800, 1054 0x04020000, 0x04120000, 0x04020800, 0x04120800, 1055 0x00020004, 0x00120004, 0x00020804, 0x00120804, 1056 0x00020004, 0x00120004, 0x00020804, 0x00120804, 1057 0x04020004, 0x04120004, 0x04020804, 0x04120804, 1058 0x04020004, 0x04120004, 0x04020804, 0x04120804, 1059 0x00020200, 0x00120200, 0x00020A00, 0x00120A00, 1060 0x00020200, 0x00120200, 0x00020A00, 0x00120A00, 1061 0x04020200, 0x04120200, 0x04020A00, 0x04120A00, 1062 0x04020200, 0x04120200, 0x04020A00, 0x04120A00, 1063 0x00020204, 0x00120204, 0x00020A04, 0x00120A04, 1064 0x00020204, 0x00120204, 0x00020A04, 0x00120A04, 1065 0x04020204, 0x04120204, 0x04020A04, 0x04120A04, 1066 0x04020204, 0x04120204, 0x04020A04, 0x04120A04, 1067 0x00020200, 0x00120200, 0x00020A00, 0x00120A00, 1068 0x00020200, 0x00120200, 0x00020A00, 0x00120A00, 1069 0x04020200, 0x04120200, 0x04020A00, 0x04120A00, 1070 0x04020200, 0x04120200, 0x04020A00, 0x04120A00, 1071 0x00020204, 0x00120204, 0x00020A04, 0x00120A04, 1072 0x00020204, 0x00120204, 0x00020A04, 0x00120A04, 1073 0x04020204, 0x04120204, 0x04020A04, 0x04120A04, 1074 0x04020204, 0x04120204, 0x04020A04, 0x04120A04 1075 ]; 1076 static $pc2mapd3 = [ 1077 0x00000000, 0x00010000, 0x02000000, 0x02010000, 1078 0x00000020, 0x00010020, 0x02000020, 0x02010020, 1079 0x00040000, 0x00050000, 0x02040000, 0x02050000, 1080 0x00040020, 0x00050020, 0x02040020, 0x02050020, 1081 0x00002000, 0x00012000, 0x02002000, 0x02012000, 1082 0x00002020, 0x00012020, 0x02002020, 0x02012020, 1083 0x00042000, 0x00052000, 0x02042000, 0x02052000, 1084 0x00042020, 0x00052020, 0x02042020, 0x02052020, 1085 0x00000000, 0x00010000, 0x02000000, 0x02010000, 1086 0x00000020, 0x00010020, 0x02000020, 0x02010020, 1087 0x00040000, 0x00050000, 0x02040000, 0x02050000, 1088 0x00040020, 0x00050020, 0x02040020, 0x02050020, 1089 0x00002000, 0x00012000, 0x02002000, 0x02012000, 1090 0x00002020, 0x00012020, 0x02002020, 0x02012020, 1091 0x00042000, 0x00052000, 0x02042000, 0x02052000, 1092 0x00042020, 0x00052020, 0x02042020, 0x02052020, 1093 0x00000010, 0x00010010, 0x02000010, 0x02010010, 1094 0x00000030, 0x00010030, 0x02000030, 0x02010030, 1095 0x00040010, 0x00050010, 0x02040010, 0x02050010, 1096 0x00040030, 0x00050030, 0x02040030, 0x02050030, 1097 0x00002010, 0x00012010, 0x02002010, 0x02012010, 1098 0x00002030, 0x00012030, 0x02002030, 0x02012030, 1099 0x00042010, 0x00052010, 0x02042010, 0x02052010, 1100 0x00042030, 0x00052030, 0x02042030, 0x02052030, 1101 0x00000010, 0x00010010, 0x02000010, 0x02010010, 1102 0x00000030, 0x00010030, 0x02000030, 0x02010030, 1103 0x00040010, 0x00050010, 0x02040010, 0x02050010, 1104 0x00040030, 0x00050030, 0x02040030, 0x02050030, 1105 0x00002010, 0x00012010, 0x02002010, 0x02012010, 1106 0x00002030, 0x00012030, 0x02002030, 0x02012030, 1107 0x00042010, 0x00052010, 0x02042010, 0x02052010, 1108 0x00042030, 0x00052030, 0x02042030, 0x02052030, 1109 0x20000000, 0x20010000, 0x22000000, 0x22010000, 1110 0x20000020, 0x20010020, 0x22000020, 0x22010020, 1111 0x20040000, 0x20050000, 0x22040000, 0x22050000, 1112 0x20040020, 0x20050020, 0x22040020, 0x22050020, 1113 0x20002000, 0x20012000, 0x22002000, 0x22012000, 1114 0x20002020, 0x20012020, 0x22002020, 0x22012020, 1115 0x20042000, 0x20052000, 0x22042000, 0x22052000, 1116 0x20042020, 0x20052020, 0x22042020, 0x22052020, 1117 0x20000000, 0x20010000, 0x22000000, 0x22010000, 1118 0x20000020, 0x20010020, 0x22000020, 0x22010020, 1119 0x20040000, 0x20050000, 0x22040000, 0x22050000, 1120 0x20040020, 0x20050020, 0x22040020, 0x22050020, 1121 0x20002000, 0x20012000, 0x22002000, 0x22012000, 1122 0x20002020, 0x20012020, 0x22002020, 0x22012020, 1123 0x20042000, 0x20052000, 0x22042000, 0x22052000, 1124 0x20042020, 0x20052020, 0x22042020, 0x22052020, 1125 0x20000010, 0x20010010, 0x22000010, 0x22010010, 1126 0x20000030, 0x20010030, 0x22000030, 0x22010030, 1127 0x20040010, 0x20050010, 0x22040010, 0x22050010, 1128 0x20040030, 0x20050030, 0x22040030, 0x22050030, 1129 0x20002010, 0x20012010, 0x22002010, 0x22012010, 1130 0x20002030, 0x20012030, 0x22002030, 0x22012030, 1131 0x20042010, 0x20052010, 0x22042010, 0x22052010, 1132 0x20042030, 0x20052030, 0x22042030, 0x22052030, 1133 0x20000010, 0x20010010, 0x22000010, 0x22010010, 1134 0x20000030, 0x20010030, 0x22000030, 0x22010030, 1135 0x20040010, 0x20050010, 0x22040010, 0x22050010, 1136 0x20040030, 0x20050030, 0x22040030, 0x22050030, 1137 0x20002010, 0x20012010, 0x22002010, 0x22012010, 1138 0x20002030, 0x20012030, 0x22002030, 0x22012030, 1139 0x20042010, 0x20052010, 0x22042010, 0x22052010, 1140 0x20042030, 0x20052030, 0x22042030, 0x22052030 1141 ]; 1142 static $pc2mapd4 = [ 1143 0x00000000, 0x00000400, 0x01000000, 0x01000400, 1144 0x00000000, 0x00000400, 0x01000000, 0x01000400, 1145 0x00000100, 0x00000500, 0x01000100, 0x01000500, 1146 0x00000100, 0x00000500, 0x01000100, 0x01000500, 1147 0x10000000, 0x10000400, 0x11000000, 0x11000400, 1148 0x10000000, 0x10000400, 0x11000000, 0x11000400, 1149 0x10000100, 0x10000500, 0x11000100, 0x11000500, 1150 0x10000100, 0x10000500, 0x11000100, 0x11000500, 1151 0x00080000, 0x00080400, 0x01080000, 0x01080400, 1152 0x00080000, 0x00080400, 0x01080000, 0x01080400, 1153 0x00080100, 0x00080500, 0x01080100, 0x01080500, 1154 0x00080100, 0x00080500, 0x01080100, 0x01080500, 1155 0x10080000, 0x10080400, 0x11080000, 0x11080400, 1156 0x10080000, 0x10080400, 0x11080000, 0x11080400, 1157 0x10080100, 0x10080500, 0x11080100, 0x11080500, 1158 0x10080100, 0x10080500, 0x11080100, 0x11080500, 1159 0x00000008, 0x00000408, 0x01000008, 0x01000408, 1160 0x00000008, 0x00000408, 0x01000008, 0x01000408, 1161 0x00000108, 0x00000508, 0x01000108, 0x01000508, 1162 0x00000108, 0x00000508, 0x01000108, 0x01000508, 1163 0x10000008, 0x10000408, 0x11000008, 0x11000408, 1164 0x10000008, 0x10000408, 0x11000008, 0x11000408, 1165 0x10000108, 0x10000508, 0x11000108, 0x11000508, 1166 0x10000108, 0x10000508, 0x11000108, 0x11000508, 1167 0x00080008, 0x00080408, 0x01080008, 0x01080408, 1168 0x00080008, 0x00080408, 0x01080008, 0x01080408, 1169 0x00080108, 0x00080508, 0x01080108, 0x01080508, 1170 0x00080108, 0x00080508, 0x01080108, 0x01080508, 1171 0x10080008, 0x10080408, 0x11080008, 0x11080408, 1172 0x10080008, 0x10080408, 0x11080008, 0x11080408, 1173 0x10080108, 0x10080508, 0x11080108, 0x11080508, 1174 0x10080108, 0x10080508, 0x11080108, 0x11080508, 1175 0x00001000, 0x00001400, 0x01001000, 0x01001400, 1176 0x00001000, 0x00001400, 0x01001000, 0x01001400, 1177 0x00001100, 0x00001500, 0x01001100, 0x01001500, 1178 0x00001100, 0x00001500, 0x01001100, 0x01001500, 1179 0x10001000, 0x10001400, 0x11001000, 0x11001400, 1180 0x10001000, 0x10001400, 0x11001000, 0x11001400, 1181 0x10001100, 0x10001500, 0x11001100, 0x11001500, 1182 0x10001100, 0x10001500, 0x11001100, 0x11001500, 1183 0x00081000, 0x00081400, 0x01081000, 0x01081400, 1184 0x00081000, 0x00081400, 0x01081000, 0x01081400, 1185 0x00081100, 0x00081500, 0x01081100, 0x01081500, 1186 0x00081100, 0x00081500, 0x01081100, 0x01081500, 1187 0x10081000, 0x10081400, 0x11081000, 0x11081400, 1188 0x10081000, 0x10081400, 0x11081000, 0x11081400, 1189 0x10081100, 0x10081500, 0x11081100, 0x11081500, 1190 0x10081100, 0x10081500, 0x11081100, 0x11081500, 1191 0x00001008, 0x00001408, 0x01001008, 0x01001408, 1192 0x00001008, 0x00001408, 0x01001008, 0x01001408, 1193 0x00001108, 0x00001508, 0x01001108, 0x01001508, 1194 0x00001108, 0x00001508, 0x01001108, 0x01001508, 1195 0x10001008, 0x10001408, 0x11001008, 0x11001408, 1196 0x10001008, 0x10001408, 0x11001008, 0x11001408, 1197 0x10001108, 0x10001508, 0x11001108, 0x11001508, 1198 0x10001108, 0x10001508, 0x11001108, 0x11001508, 1199 0x00081008, 0x00081408, 0x01081008, 0x01081408, 1200 0x00081008, 0x00081408, 0x01081008, 0x01081408, 1201 0x00081108, 0x00081508, 0x01081108, 0x01081508, 1202 0x00081108, 0x00081508, 0x01081108, 0x01081508, 1203 0x10081008, 0x10081408, 0x11081008, 0x11081408, 1204 0x10081008, 0x10081408, 0x11081008, 0x11081408, 1205 0x10081108, 0x10081508, 0x11081108, 0x11081508, 1206 0x10081108, 0x10081508, 0x11081108, 0x11081508 1207 ]; 1208 1209 $keys = []; 1210 for ($des_round = 0; $des_round < $this->des_rounds; ++$des_round) { 1211 // pad the key and remove extra characters as appropriate. 1212 $key = str_pad(substr($this->key, $des_round * 8, 8), 8, "\0"); 1213 1214 // Perform the PC/1 transformation and compute C and D. 1215 $t = unpack('Nl/Nr', $key); 1216 list($l, $r) = [$t['l'], $t['r']]; 1217 $key = (self::$shuffle[$pc1map[ $r & 0xFF]] & "\x80\x80\x80\x80\x80\x80\x80\x00") | 1218 (self::$shuffle[$pc1map[($r >> 8) & 0xFF]] & "\x40\x40\x40\x40\x40\x40\x40\x00") | 1219 (self::$shuffle[$pc1map[($r >> 16) & 0xFF]] & "\x20\x20\x20\x20\x20\x20\x20\x00") | 1220 (self::$shuffle[$pc1map[($r >> 24) & 0xFF]] & "\x10\x10\x10\x10\x10\x10\x10\x00") | 1221 (self::$shuffle[$pc1map[ $l & 0xFF]] & "\x08\x08\x08\x08\x08\x08\x08\x00") | 1222 (self::$shuffle[$pc1map[($l >> 8) & 0xFF]] & "\x04\x04\x04\x04\x04\x04\x04\x00") | 1223 (self::$shuffle[$pc1map[($l >> 16) & 0xFF]] & "\x02\x02\x02\x02\x02\x02\x02\x00") | 1224 (self::$shuffle[$pc1map[($l >> 24) & 0xFF]] & "\x01\x01\x01\x01\x01\x01\x01\x00"); 1225 $key = unpack('Nc/Nd', $key); 1226 $c = ( $key['c'] >> 4) & 0x0FFFFFFF; 1227 $d = (($key['d'] >> 4) & 0x0FFFFFF0) | ($key['c'] & 0x0F); 1228 1229 $keys[$des_round] = [ 1230 self::ENCRYPT => [], 1231 self::DECRYPT => array_fill(0, 32, 0) 1232 ]; 1233 for ($i = 0, $ki = 31; $i < 16; ++$i, $ki -= 2) { 1234 $c <<= $shifts[$i]; 1235 $c = ($c | ($c >> 28)) & 0x0FFFFFFF; 1236 $d <<= $shifts[$i]; 1237 $d = ($d | ($d >> 28)) & 0x0FFFFFFF; 1238 1239 // Perform the PC-2 transformation. 1240 $cp = $pc2mapc1[ $c >> 24 ] | $pc2mapc2[($c >> 16) & 0xFF] | 1241 $pc2mapc3[($c >> 8) & 0xFF] | $pc2mapc4[ $c & 0xFF]; 1242 $dp = $pc2mapd1[ $d >> 24 ] | $pc2mapd2[($d >> 16) & 0xFF] | 1243 $pc2mapd3[($d >> 8) & 0xFF] | $pc2mapd4[ $d & 0xFF]; 1244 1245 // Reorder: odd bytes/even bytes. Push the result in key schedule. 1246 $val1 = ( $cp & intval(0xFF000000)) | (($cp << 8) & 0x00FF0000) | 1247 (($dp >> 16) & 0x0000FF00) | (($dp >> 8) & 0x000000FF); 1248 $val2 = (($cp << 8) & intval(0xFF000000)) | (($cp << 16) & 0x00FF0000) | 1249 (($dp >> 8) & 0x0000FF00) | ( $dp & 0x000000FF); 1250 $keys[$des_round][self::ENCRYPT][ ] = $val1; 1251 $keys[$des_round][self::DECRYPT][$ki - 1] = $val1; 1252 $keys[$des_round][self::ENCRYPT][ ] = $val2; 1253 $keys[$des_round][self::DECRYPT][$ki ] = $val2; 1254 } 1255 } 1256 1257 switch ($this->des_rounds) { 1258 case 3: // 3DES keys 1259 $this->keys = [ 1260 self::ENCRYPT => array_merge( 1261 $keys[0][self::ENCRYPT], 1262 $keys[1][self::DECRYPT], 1263 $keys[2][self::ENCRYPT] 1264 ), 1265 self::DECRYPT => array_merge( 1266 $keys[2][self::DECRYPT], 1267 $keys[1][self::ENCRYPT], 1268 $keys[0][self::DECRYPT] 1269 ) 1270 ]; 1271 break; 1272 // case 1: // DES keys 1273 default: 1274 $this->keys = [ 1275 self::ENCRYPT => $keys[0][self::ENCRYPT], 1276 self::DECRYPT => $keys[0][self::DECRYPT] 1277 ]; 1278 } 1279 } 1280 1281 /** 1282 * Setup the performance-optimized function for de/encrypt() 1283 * 1284 * @see \phpseclib3\Crypt\Common\SymmetricKey::setupInlineCrypt() 1285 */ 1286 protected function setupInlineCrypt() 1287 { 1288 // Engine configuration for: 1289 // - DES ($des_rounds == 1) or 1290 // - 3DES ($des_rounds == 3) 1291 $des_rounds = $this->des_rounds; 1292 1293 $init_crypt = 'static $sbox1, $sbox2, $sbox3, $sbox4, $sbox5, $sbox6, $sbox7, $sbox8, $shuffleip, $shuffleinvip; 1294 if (!$sbox1) { 1295 $sbox1 = array_map("intval", self::$sbox1); 1296 $sbox2 = array_map("intval", self::$sbox2); 1297 $sbox3 = array_map("intval", self::$sbox3); 1298 $sbox4 = array_map("intval", self::$sbox4); 1299 $sbox5 = array_map("intval", self::$sbox5); 1300 $sbox6 = array_map("intval", self::$sbox6); 1301 $sbox7 = array_map("intval", self::$sbox7); 1302 $sbox8 = array_map("intval", self::$sbox8);' 1303 /* Merge $shuffle with $[inv]ipmap */ . ' 1304 for ($i = 0; $i < 256; ++$i) { 1305 $shuffleip[] = self::$shuffle[self::$ipmap[$i]]; 1306 $shuffleinvip[] = self::$shuffle[self::$invipmap[$i]]; 1307 } 1308 } 1309 '; 1310 1311 $k = [ 1312 self::ENCRYPT => $this->keys[self::ENCRYPT], 1313 self::DECRYPT => $this->keys[self::DECRYPT] 1314 ]; 1315 $init_encrypt = ''; 1316 $init_decrypt = ''; 1317 1318 // Creating code for en- and decryption. 1319 $crypt_block = []; 1320 foreach ([self::ENCRYPT, self::DECRYPT] as $c) { 1321 /* Do the initial IP permutation. */ 1322 $crypt_block[$c] = ' 1323 $in = unpack("N*", $in); 1324 $l = $in[1]; 1325 $r = $in[2]; 1326 $in = unpack("N*", 1327 ($shuffleip[ $r & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") | 1328 ($shuffleip[($r >> 8) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") | 1329 ($shuffleip[($r >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") | 1330 ($shuffleip[($r >> 24) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") | 1331 ($shuffleip[ $l & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") | 1332 ($shuffleip[($l >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") | 1333 ($shuffleip[($l >> 16) & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") | 1334 ($shuffleip[($l >> 24) & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01") 1335 ); 1336 ' . /* Extract L0 and R0 */ ' 1337 $l = $in[1]; 1338 $r = $in[2]; 1339 '; 1340 1341 $l = '$l'; 1342 $r = '$r'; 1343 1344 // Perform DES or 3DES. 1345 for ($ki = -1, $des_round = 0; $des_round < $des_rounds; ++$des_round) { 1346 // Perform the 16 steps. 1347 for ($i = 0; $i < 16; ++$i) { 1348 // start of "the Feistel (F) function" - see the following URL: 1349 // http://en.wikipedia.org/wiki/Image:Data_Encryption_Standard_InfoBox_Diagram.png 1350 // Merge key schedule. 1351 $crypt_block[$c] .= ' 1352 $b1 = ((' . $r . ' >> 3) & 0x1FFFFFFF) ^ (' . $r . ' << 29) ^ ' . $k[$c][++$ki] . '; 1353 $b2 = ((' . $r . ' >> 31) & 0x00000001) ^ (' . $r . ' << 1) ^ ' . $k[$c][++$ki] . ';' . 1354 /* S-box indexing. */ 1355 $l . ' = $sbox1[($b1 >> 24) & 0x3F] ^ $sbox2[($b2 >> 24) & 0x3F] ^ 1356 $sbox3[($b1 >> 16) & 0x3F] ^ $sbox4[($b2 >> 16) & 0x3F] ^ 1357 $sbox5[($b1 >> 8) & 0x3F] ^ $sbox6[($b2 >> 8) & 0x3F] ^ 1358 $sbox7[ $b1 & 0x3F] ^ $sbox8[ $b2 & 0x3F] ^ ' . $l . '; 1359 '; 1360 // end of "the Feistel (F) function" 1361 1362 // swap L & R 1363 list($l, $r) = [$r, $l]; 1364 } 1365 list($l, $r) = [$r, $l]; 1366 } 1367 1368 // Perform the inverse IP permutation. 1369 $crypt_block[$c] .= '$in = 1370 ($shuffleinvip[($l >> 24) & 0xFF] & "\x80\x80\x80\x80\x80\x80\x80\x80") | 1371 ($shuffleinvip[($r >> 24) & 0xFF] & "\x40\x40\x40\x40\x40\x40\x40\x40") | 1372 ($shuffleinvip[($l >> 16) & 0xFF] & "\x20\x20\x20\x20\x20\x20\x20\x20") | 1373 ($shuffleinvip[($r >> 16) & 0xFF] & "\x10\x10\x10\x10\x10\x10\x10\x10") | 1374 ($shuffleinvip[($l >> 8) & 0xFF] & "\x08\x08\x08\x08\x08\x08\x08\x08") | 1375 ($shuffleinvip[($r >> 8) & 0xFF] & "\x04\x04\x04\x04\x04\x04\x04\x04") | 1376 ($shuffleinvip[ $l & 0xFF] & "\x02\x02\x02\x02\x02\x02\x02\x02") | 1377 ($shuffleinvip[ $r & 0xFF] & "\x01\x01\x01\x01\x01\x01\x01\x01"); 1378 '; 1379 } 1380 1381 // Creates the inline-crypt function 1382 $this->inline_crypt = $this->createInlineCryptFunction( 1383 [ 1384 'init_crypt' => $init_crypt, 1385 'init_encrypt' => $init_encrypt, 1386 'init_decrypt' => $init_decrypt, 1387 'encrypt_block' => $crypt_block[self::ENCRYPT], 1388 'decrypt_block' => $crypt_block[self::DECRYPT] 1389 ] 1390 ); 1391 } 1392} 1393
