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1 <?php 2 /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ 3 4 /** 5 * Pure-PHP implementation of Rijndael. 6 * 7 * Uses mcrypt, if available/possible, and an internal implementation, otherwise. 8 * 9 * PHP versions 4 and 5 10 * 11 * If {@link Crypt_Rijndael::setBlockLength() setBlockLength()} isn't called, it'll be assumed to be 128 bits. If 12 * {@link Crypt_Rijndael::setKeyLength() setKeyLength()} isn't called, it'll be calculated from 13 * {@link Crypt_Rijndael::setKey() setKey()}. ie. if the key is 128-bits, the key length will be 128-bits. If it's 14 * 136-bits it'll be null-padded to 192-bits and 192 bits will be the key length until 15 * {@link Crypt_Rijndael::setKey() setKey()} is called, again, at which point, it'll be recalculated. 16 * 17 * Not all Rijndael implementations may support 160-bits or 224-bits as the block length / key length. mcrypt, for example, 18 * does not. AES, itself, only supports block lengths of 128 and key lengths of 128, 192, and 256. 19 * {@link http://csrc.nist.gov/archive/aes/rijndael/Rijndael-ammended.pdf#page=10 Rijndael-ammended.pdf#page=10} defines the 20 * algorithm for block lengths of 192 and 256 but not for block lengths / key lengths of 160 and 224. Indeed, 160 and 224 21 * are first defined as valid key / block lengths in 22 * {@link http://csrc.nist.gov/archive/aes/rijndael/Rijndael-ammended.pdf#page=44 Rijndael-ammended.pdf#page=44}: 23 * Extensions: Other block and Cipher Key lengths. 24 * Note: Use of 160/224-bit Keys must be explicitly set by setKeyLength(160) respectively setKeyLength(224). 25 * 26 * {@internal The variable names are the same as those in 27 * {@link http://www.csrc.nist.gov/publications/fips/fips197/fips-197.pdf#page=10 fips-197.pdf#page=10}.}} 28 * 29 * Here's a short example of how to use this library: 30 * <code> 31 * <?php 32 * include('Crypt/Rijndael.php'); 33 * 34 * $rijndael = new Crypt_Rijndael(); 35 * 36 * $rijndael->setKey('abcdefghijklmnop'); 37 * 38 * $size = 10 * 1024; 39 * $plaintext = ''; 40 * for ($i = 0; $i < $size; $i++) { 41 * $plaintext.= 'a'; 42 * } 43 * 44 * echo $rijndael->decrypt($rijndael->encrypt($plaintext)); 45 * ?> 46 * </code> 47 * 48 * LICENSE: Permission is hereby granted, free of charge, to any person obtaining a copy 49 * of this software and associated documentation files (the "Software"), to deal 50 * in the Software without restriction, including without limitation the rights 51 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 52 * copies of the Software, and to permit persons to whom the Software is 53 * furnished to do so, subject to the following conditions: 54 * 55 * The above copyright notice and this permission notice shall be included in 56 * all copies or substantial portions of the Software. 57 * 58 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 59 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 60 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 61 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 62 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 63 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 64 * THE SOFTWARE. 65 * 66 * @category Crypt 67 * @package Crypt_Rijndael 68 * @author Jim Wigginton <terrafrost@php.net> 69 * @copyright MMVIII Jim Wigginton 70 * @license http://www.opensource.org/licenses/mit-license.html MIT License 71 * @link http://phpseclib.sourceforge.net 72 */ 73 74 /** 75 * Include Crypt_Base 76 * 77 * Base cipher class 78 */ 79 if (!class_exists('Crypt_Base')) { 80 require_once('Base.php'); 81 } 82 83 /**#@+ 84 * @access public 85 * @see Crypt_Rijndael::encrypt() 86 * @see Crypt_Rijndael::decrypt() 87 */ 88 /** 89 * Encrypt / decrypt using the Counter mode. 90 * 91 * Set to -1 since that's what Crypt/Random.php uses to index the CTR mode. 92 * 93 * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Counter_.28CTR.29 94 */ 95 define('CRYPT_RIJNDAEL_MODE_CTR', CRYPT_MODE_CTR); 96 /** 97 * Encrypt / decrypt using the Electronic Code Book mode. 98 * 99 * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Electronic_codebook_.28ECB.29 100 */ 101 define('CRYPT_RIJNDAEL_MODE_ECB', CRYPT_MODE_ECB); 102 /** 103 * Encrypt / decrypt using the Code Book Chaining mode. 104 * 105 * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher-block_chaining_.28CBC.29 106 */ 107 define('CRYPT_RIJNDAEL_MODE_CBC', CRYPT_MODE_CBC); 108 /** 109 * Encrypt / decrypt using the Cipher Feedback mode. 110 * 111 * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher_feedback_.28CFB.29 112 */ 113 define('CRYPT_RIJNDAEL_MODE_CFB', CRYPT_MODE_CFB); 114 /** 115 * Encrypt / decrypt using the Cipher Feedback mode. 116 * 117 * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Output_feedback_.28OFB.29 118 */ 119 define('CRYPT_RIJNDAEL_MODE_OFB', CRYPT_MODE_OFB); 120 /**#@-*/ 121 122 /**#@+ 123 * @access private 124 * @see Crypt_Rijndael::Crypt_Rijndael() 125 */ 126 /** 127 * Toggles the internal implementation 128 */ 129 define('CRYPT_RIJNDAEL_MODE_INTERNAL', CRYPT_MODE_INTERNAL); 130 /** 131 * Toggles the mcrypt implementation 132 */ 133 define('CRYPT_RIJNDAEL_MODE_MCRYPT', CRYPT_MODE_MCRYPT); 134 /**#@-*/ 135 136 /** 137 * Pure-PHP implementation of Rijndael. 138 * 139 * @author Jim Wigginton <terrafrost@php.net> 140 * @version 0.1.0 141 * @access public 142 * @package Crypt_Rijndael 143 */ 144 class Crypt_Rijndael extends Crypt_Base { 145 /** 146 * The default password key_size used by setPassword() 147 * 148 * @see Crypt_Base::password_key_size 149 * @see Crypt_Base::setPassword() 150 * @var Integer 151 * @access private 152 */ 153 var $password_key_size = 16; 154 155 /** 156 * The namespace used by the cipher for its constants. 157 * 158 * @see Crypt_Base::const_namespace 159 * @var String 160 * @access private 161 */ 162 var $const_namespace = 'RIJNDAEL'; 163 164 /** 165 * The mcrypt specific name of the cipher 166 * 167 * Mcrypt is useable for 128/192/256-bit $block_size/$key_size. For 160/224 not. 168 * Crypt_Rijndael determines automatically whether mcrypt is useable 169 * or not for the current $block_size/$key_size. 170 * In case of, $cipher_name_mcrypt will be set dynamicaly at run time accordingly. 171 * 172 * @see Crypt_Base::cipher_name_mcrypt 173 * @see Crypt_Base::engine 174 * @see _setupEngine() 175 * @var String 176 * @access private 177 */ 178 var $cipher_name_mcrypt = 'rijndael-128'; 179 180 /** 181 * The default salt used by setPassword() 182 * 183 * @see Crypt_Base::password_default_salt 184 * @see Crypt_Base::setPassword() 185 * @var String 186 * @access private 187 */ 188 var $password_default_salt = 'phpseclib'; 189 190 /** 191 * Has the key length explicitly been set or should it be derived from the key, itself? 192 * 193 * @see setKeyLength() 194 * @var Boolean 195 * @access private 196 */ 197 var $explicit_key_length = false; 198 199 /** 200 * The Key Schedule 201 * 202 * @see _setup() 203 * @var Array 204 * @access private 205 */ 206 var $w; 207 208 /** 209 * The Inverse Key Schedule 210 * 211 * @see _setup() 212 * @var Array 213 * @access private 214 */ 215 var $dw; 216 217 /** 218 * The Block Length divided by 32 219 * 220 * @see setBlockLength() 221 * @var Integer 222 * @access private 223 * @internal The max value is 256 / 32 = 8, the min value is 128 / 32 = 4. Exists in conjunction with $block_size 224 * because the encryption / decryption / key schedule creation requires this number and not $block_size. We could 225 * derive this from $block_size or vice versa, but that'd mean we'd have to do multiple shift operations, so in lieu 226 * of that, we'll just precompute it once. 227 * 228 */ 229 var $Nb = 4; 230 231 /** 232 * The Key Length 233 * 234 * @see setKeyLength() 235 * @var Integer 236 * @access private 237 * @internal The max value is 256 / 8 = 32, the min value is 128 / 8 = 16. Exists in conjunction with $Nk 238 * because the encryption / decryption / key schedule creation requires this number and not $key_size. We could 239 * derive this from $key_size or vice versa, but that'd mean we'd have to do multiple shift operations, so in lieu 240 * of that, we'll just precompute it once. 241 */ 242 var $key_size = 16; 243 244 /** 245 * The Key Length divided by 32 246 * 247 * @see setKeyLength() 248 * @var Integer 249 * @access private 250 * @internal The max value is 256 / 32 = 8, the min value is 128 / 32 = 4 251 */ 252 var $Nk = 4; 253 254 /** 255 * The Number of Rounds 256 * 257 * @var Integer 258 * @access private 259 * @internal The max value is 14, the min value is 10. 260 */ 261 var $Nr; 262 263 /** 264 * Shift offsets 265 * 266 * @var Array 267 * @access private 268 */ 269 var $c; 270 271 /** 272 * Holds the last used key- and block_size information 273 * 274 * @var Array 275 * @access private 276 */ 277 var $kl; 278 279 /** 280 * Precomputed mixColumns table 281 * 282 * According to <http://csrc.nist.gov/archive/aes/rijndael/Rijndael-ammended.pdf#page=19> (section 5.2.1), 283 * precomputed tables can be used in the mixColumns phase. in that example, they're assigned t0...t3, so 284 * those are the names we'll use. 285 * 286 * @see Crypt_Rijndael:_encryptBlock() 287 * @see Crypt_Rijndael:_decryptBlock() 288 * @var Array 289 * @access private 290 */ 291 var $t0 = array( 292 0xC66363A5, 0xF87C7C84, 0xEE777799, 0xF67B7B8D, 0xFFF2F20D, 0xD66B6BBD, 0xDE6F6FB1, 0x91C5C554, 293 0x60303050, 0x02010103, 0xCE6767A9, 0x562B2B7D, 0xE7FEFE19, 0xB5D7D762, 0x4DABABE6, 0xEC76769A, 294 0x8FCACA45, 0x1F82829D, 0x89C9C940, 0xFA7D7D87, 0xEFFAFA15, 0xB25959EB, 0x8E4747C9, 0xFBF0F00B, 295 0x41ADADEC, 0xB3D4D467, 0x5FA2A2FD, 0x45AFAFEA, 0x239C9CBF, 0x53A4A4F7, 0xE4727296, 0x9BC0C05B, 296 0x75B7B7C2, 0xE1FDFD1C, 0x3D9393AE, 0x4C26266A, 0x6C36365A, 0x7E3F3F41, 0xF5F7F702, 0x83CCCC4F, 297 0x6834345C, 0x51A5A5F4, 0xD1E5E534, 0xF9F1F108, 0xE2717193, 0xABD8D873, 0x62313153, 0x2A15153F, 298 0x0804040C, 0x95C7C752, 0x46232365, 0x9DC3C35E, 0x30181828, 0x379696A1, 0x0A05050F, 0x2F9A9AB5, 299 0x0E070709, 0x24121236, 0x1B80809B, 0xDFE2E23D, 0xCDEBEB26, 0x4E272769, 0x7FB2B2CD, 0xEA75759F, 300 0x1209091B, 0x1D83839E, 0x582C2C74, 0x341A1A2E, 0x361B1B2D, 0xDC6E6EB2, 0xB45A5AEE, 0x5BA0A0FB, 301 0xA45252F6, 0x763B3B4D, 0xB7D6D661, 0x7DB3B3CE, 0x5229297B, 0xDDE3E33E, 0x5E2F2F71, 0x13848497, 302 0xA65353F5, 0xB9D1D168, 0x00000000, 0xC1EDED2C, 0x40202060, 0xE3FCFC1F, 0x79B1B1C8, 0xB65B5BED, 303 0xD46A6ABE, 0x8DCBCB46, 0x67BEBED9, 0x7239394B, 0x944A4ADE, 0x984C4CD4, 0xB05858E8, 0x85CFCF4A, 304 0xBBD0D06B, 0xC5EFEF2A, 0x4FAAAAE5, 0xEDFBFB16, 0x864343C5, 0x9A4D4DD7, 0x66333355, 0x11858594, 305 0x8A4545CF, 0xE9F9F910, 0x04020206, 0xFE7F7F81, 0xA05050F0, 0x783C3C44, 0x259F9FBA, 0x4BA8A8E3, 306 0xA25151F3, 0x5DA3A3FE, 0x804040C0, 0x058F8F8A, 0x3F9292AD, 0x219D9DBC, 0x70383848, 0xF1F5F504, 307 0x63BCBCDF, 0x77B6B6C1, 0xAFDADA75, 0x42212163, 0x20101030, 0xE5FFFF1A, 0xFDF3F30E, 0xBFD2D26D, 308 0x81CDCD4C, 0x180C0C14, 0x26131335, 0xC3ECEC2F, 0xBE5F5FE1, 0x359797A2, 0x884444CC, 0x2E171739, 309 0x93C4C457, 0x55A7A7F2, 0xFC7E7E82, 0x7A3D3D47, 0xC86464AC, 0xBA5D5DE7, 0x3219192B, 0xE6737395, 310 0xC06060A0, 0x19818198, 0x9E4F4FD1, 0xA3DCDC7F, 0x44222266, 0x542A2A7E, 0x3B9090AB, 0x0B888883, 311 0x8C4646CA, 0xC7EEEE29, 0x6BB8B8D3, 0x2814143C, 0xA7DEDE79, 0xBC5E5EE2, 0x160B0B1D, 0xADDBDB76, 312 0xDBE0E03B, 0x64323256, 0x743A3A4E, 0x140A0A1E, 0x924949DB, 0x0C06060A, 0x4824246C, 0xB85C5CE4, 313 0x9FC2C25D, 0xBDD3D36E, 0x43ACACEF, 0xC46262A6, 0x399191A8, 0x319595A4, 0xD3E4E437, 0xF279798B, 314 0xD5E7E732, 0x8BC8C843, 0x6E373759, 0xDA6D6DB7, 0x018D8D8C, 0xB1D5D564, 0x9C4E4ED2, 0x49A9A9E0, 315 0xD86C6CB4, 0xAC5656FA, 0xF3F4F407, 0xCFEAEA25, 0xCA6565AF, 0xF47A7A8E, 0x47AEAEE9, 0x10080818, 316 0x6FBABAD5, 0xF0787888, 0x4A25256F, 0x5C2E2E72, 0x381C1C24, 0x57A6A6F1, 0x73B4B4C7, 0x97C6C651, 317 0xCBE8E823, 0xA1DDDD7C, 0xE874749C, 0x3E1F1F21, 0x964B4BDD, 0x61BDBDDC, 0x0D8B8B86, 0x0F8A8A85, 318 0xE0707090, 0x7C3E3E42, 0x71B5B5C4, 0xCC6666AA, 0x904848D8, 0x06030305, 0xF7F6F601, 0x1C0E0E12, 319 0xC26161A3, 0x6A35355F, 0xAE5757F9, 0x69B9B9D0, 0x17868691, 0x99C1C158, 0x3A1D1D27, 0x279E9EB9, 320 0xD9E1E138, 0xEBF8F813, 0x2B9898B3, 0x22111133, 0xD26969BB, 0xA9D9D970, 0x078E8E89, 0x339494A7, 321 0x2D9B9BB6, 0x3C1E1E22, 0x15878792, 0xC9E9E920, 0x87CECE49, 0xAA5555FF, 0x50282878, 0xA5DFDF7A, 322 0x038C8C8F, 0x59A1A1F8, 0x09898980, 0x1A0D0D17, 0x65BFBFDA, 0xD7E6E631, 0x844242C6, 0xD06868B8, 323 0x824141C3, 0x299999B0, 0x5A2D2D77, 0x1E0F0F11, 0x7BB0B0CB, 0xA85454FC, 0x6DBBBBD6, 0x2C16163A 324 ); 325 326 /** 327 * Precomputed mixColumns table 328 * 329 * @see Crypt_Rijndael:_encryptBlock() 330 * @see Crypt_Rijndael:_decryptBlock() 331 * @var Array 332 * @access private 333 */ 334 var $t1 = array( 335 0xA5C66363, 0x84F87C7C, 0x99EE7777, 0x8DF67B7B, 0x0DFFF2F2, 0xBDD66B6B, 0xB1DE6F6F, 0x5491C5C5, 336 0x50603030, 0x03020101, 0xA9CE6767, 0x7D562B2B, 0x19E7FEFE, 0x62B5D7D7, 0xE64DABAB, 0x9AEC7676, 337 0x458FCACA, 0x9D1F8282, 0x4089C9C9, 0x87FA7D7D, 0x15EFFAFA, 0xEBB25959, 0xC98E4747, 0x0BFBF0F0, 338 0xEC41ADAD, 0x67B3D4D4, 0xFD5FA2A2, 0xEA45AFAF, 0xBF239C9C, 0xF753A4A4, 0x96E47272, 0x5B9BC0C0, 339 0xC275B7B7, 0x1CE1FDFD, 0xAE3D9393, 0x6A4C2626, 0x5A6C3636, 0x417E3F3F, 0x02F5F7F7, 0x4F83CCCC, 340 0x5C683434, 0xF451A5A5, 0x34D1E5E5, 0x08F9F1F1, 0x93E27171, 0x73ABD8D8, 0x53623131, 0x3F2A1515, 341 0x0C080404, 0x5295C7C7, 0x65462323, 0x5E9DC3C3, 0x28301818, 0xA1379696, 0x0F0A0505, 0xB52F9A9A, 342 0x090E0707, 0x36241212, 0x9B1B8080, 0x3DDFE2E2, 0x26CDEBEB, 0x694E2727, 0xCD7FB2B2, 0x9FEA7575, 343 0x1B120909, 0x9E1D8383, 0x74582C2C, 0x2E341A1A, 0x2D361B1B, 0xB2DC6E6E, 0xEEB45A5A, 0xFB5BA0A0, 344 0xF6A45252, 0x4D763B3B, 0x61B7D6D6, 0xCE7DB3B3, 0x7B522929, 0x3EDDE3E3, 0x715E2F2F, 0x97138484, 345 0xF5A65353, 0x68B9D1D1, 0x00000000, 0x2CC1EDED, 0x60402020, 0x1FE3FCFC, 0xC879B1B1, 0xEDB65B5B, 346 0xBED46A6A, 0x468DCBCB, 0xD967BEBE, 0x4B723939, 0xDE944A4A, 0xD4984C4C, 0xE8B05858, 0x4A85CFCF, 347 0x6BBBD0D0, 0x2AC5EFEF, 0xE54FAAAA, 0x16EDFBFB, 0xC5864343, 0xD79A4D4D, 0x55663333, 0x94118585, 348 0xCF8A4545, 0x10E9F9F9, 0x06040202, 0x81FE7F7F, 0xF0A05050, 0x44783C3C, 0xBA259F9F, 0xE34BA8A8, 349 0xF3A25151, 0xFE5DA3A3, 0xC0804040, 0x8A058F8F, 0xAD3F9292, 0xBC219D9D, 0x48703838, 0x04F1F5F5, 350 0xDF63BCBC, 0xC177B6B6, 0x75AFDADA, 0x63422121, 0x30201010, 0x1AE5FFFF, 0x0EFDF3F3, 0x6DBFD2D2, 351 0x4C81CDCD, 0x14180C0C, 0x35261313, 0x2FC3ECEC, 0xE1BE5F5F, 0xA2359797, 0xCC884444, 0x392E1717, 352 0x5793C4C4, 0xF255A7A7, 0x82FC7E7E, 0x477A3D3D, 0xACC86464, 0xE7BA5D5D, 0x2B321919, 0x95E67373, 353 0xA0C06060, 0x98198181, 0xD19E4F4F, 0x7FA3DCDC, 0x66442222, 0x7E542A2A, 0xAB3B9090, 0x830B8888, 354 0xCA8C4646, 0x29C7EEEE, 0xD36BB8B8, 0x3C281414, 0x79A7DEDE, 0xE2BC5E5E, 0x1D160B0B, 0x76ADDBDB, 355 0x3BDBE0E0, 0x56643232, 0x4E743A3A, 0x1E140A0A, 0xDB924949, 0x0A0C0606, 0x6C482424, 0xE4B85C5C, 356 0x5D9FC2C2, 0x6EBDD3D3, 0xEF43ACAC, 0xA6C46262, 0xA8399191, 0xA4319595, 0x37D3E4E4, 0x8BF27979, 357 0x32D5E7E7, 0x438BC8C8, 0x596E3737, 0xB7DA6D6D, 0x8C018D8D, 0x64B1D5D5, 0xD29C4E4E, 0xE049A9A9, 358 0xB4D86C6C, 0xFAAC5656, 0x07F3F4F4, 0x25CFEAEA, 0xAFCA6565, 0x8EF47A7A, 0xE947AEAE, 0x18100808, 359 0xD56FBABA, 0x88F07878, 0x6F4A2525, 0x725C2E2E, 0x24381C1C, 0xF157A6A6, 0xC773B4B4, 0x5197C6C6, 360 0x23CBE8E8, 0x7CA1DDDD, 0x9CE87474, 0x213E1F1F, 0xDD964B4B, 0xDC61BDBD, 0x860D8B8B, 0x850F8A8A, 361 0x90E07070, 0x427C3E3E, 0xC471B5B5, 0xAACC6666, 0xD8904848, 0x05060303, 0x01F7F6F6, 0x121C0E0E, 362 0xA3C26161, 0x5F6A3535, 0xF9AE5757, 0xD069B9B9, 0x91178686, 0x5899C1C1, 0x273A1D1D, 0xB9279E9E, 363 0x38D9E1E1, 0x13EBF8F8, 0xB32B9898, 0x33221111, 0xBBD26969, 0x70A9D9D9, 0x89078E8E, 0xA7339494, 364 0xB62D9B9B, 0x223C1E1E, 0x92158787, 0x20C9E9E9, 0x4987CECE, 0xFFAA5555, 0x78502828, 0x7AA5DFDF, 365 0x8F038C8C, 0xF859A1A1, 0x80098989, 0x171A0D0D, 0xDA65BFBF, 0x31D7E6E6, 0xC6844242, 0xB8D06868, 366 0xC3824141, 0xB0299999, 0x775A2D2D, 0x111E0F0F, 0xCB7BB0B0, 0xFCA85454, 0xD66DBBBB, 0x3A2C1616 367 ); 368 369 /** 370 * Precomputed mixColumns table 371 * 372 * @see Crypt_Rijndael:_encryptBlock() 373 * @see Crypt_Rijndael:_decryptBlock() 374 * @var Array 375 * @access private 376 */ 377 var $t2 = array( 378 0x63A5C663, 0x7C84F87C, 0x7799EE77, 0x7B8DF67B, 0xF20DFFF2, 0x6BBDD66B, 0x6FB1DE6F, 0xC55491C5, 379 0x30506030, 0x01030201, 0x67A9CE67, 0x2B7D562B, 0xFE19E7FE, 0xD762B5D7, 0xABE64DAB, 0x769AEC76, 380 0xCA458FCA, 0x829D1F82, 0xC94089C9, 0x7D87FA7D, 0xFA15EFFA, 0x59EBB259, 0x47C98E47, 0xF00BFBF0, 381 0xADEC41AD, 0xD467B3D4, 0xA2FD5FA2, 0xAFEA45AF, 0x9CBF239C, 0xA4F753A4, 0x7296E472, 0xC05B9BC0, 382 0xB7C275B7, 0xFD1CE1FD, 0x93AE3D93, 0x266A4C26, 0x365A6C36, 0x3F417E3F, 0xF702F5F7, 0xCC4F83CC, 383 0x345C6834, 0xA5F451A5, 0xE534D1E5, 0xF108F9F1, 0x7193E271, 0xD873ABD8, 0x31536231, 0x153F2A15, 384 0x040C0804, 0xC75295C7, 0x23654623, 0xC35E9DC3, 0x18283018, 0x96A13796, 0x050F0A05, 0x9AB52F9A, 385 0x07090E07, 0x12362412, 0x809B1B80, 0xE23DDFE2, 0xEB26CDEB, 0x27694E27, 0xB2CD7FB2, 0x759FEA75, 386 0x091B1209, 0x839E1D83, 0x2C74582C, 0x1A2E341A, 0x1B2D361B, 0x6EB2DC6E, 0x5AEEB45A, 0xA0FB5BA0, 387 0x52F6A452, 0x3B4D763B, 0xD661B7D6, 0xB3CE7DB3, 0x297B5229, 0xE33EDDE3, 0x2F715E2F, 0x84971384, 388 0x53F5A653, 0xD168B9D1, 0x00000000, 0xED2CC1ED, 0x20604020, 0xFC1FE3FC, 0xB1C879B1, 0x5BEDB65B, 389 0x6ABED46A, 0xCB468DCB, 0xBED967BE, 0x394B7239, 0x4ADE944A, 0x4CD4984C, 0x58E8B058, 0xCF4A85CF, 390 0xD06BBBD0, 0xEF2AC5EF, 0xAAE54FAA, 0xFB16EDFB, 0x43C58643, 0x4DD79A4D, 0x33556633, 0x85941185, 391 0x45CF8A45, 0xF910E9F9, 0x02060402, 0x7F81FE7F, 0x50F0A050, 0x3C44783C, 0x9FBA259F, 0xA8E34BA8, 392 0x51F3A251, 0xA3FE5DA3, 0x40C08040, 0x8F8A058F, 0x92AD3F92, 0x9DBC219D, 0x38487038, 0xF504F1F5, 393 0xBCDF63BC, 0xB6C177B6, 0xDA75AFDA, 0x21634221, 0x10302010, 0xFF1AE5FF, 0xF30EFDF3, 0xD26DBFD2, 394 0xCD4C81CD, 0x0C14180C, 0x13352613, 0xEC2FC3EC, 0x5FE1BE5F, 0x97A23597, 0x44CC8844, 0x17392E17, 395 0xC45793C4, 0xA7F255A7, 0x7E82FC7E, 0x3D477A3D, 0x64ACC864, 0x5DE7BA5D, 0x192B3219, 0x7395E673, 396 0x60A0C060, 0x81981981, 0x4FD19E4F, 0xDC7FA3DC, 0x22664422, 0x2A7E542A, 0x90AB3B90, 0x88830B88, 397 0x46CA8C46, 0xEE29C7EE, 0xB8D36BB8, 0x143C2814, 0xDE79A7DE, 0x5EE2BC5E, 0x0B1D160B, 0xDB76ADDB, 398 0xE03BDBE0, 0x32566432, 0x3A4E743A, 0x0A1E140A, 0x49DB9249, 0x060A0C06, 0x246C4824, 0x5CE4B85C, 399 0xC25D9FC2, 0xD36EBDD3, 0xACEF43AC, 0x62A6C462, 0x91A83991, 0x95A43195, 0xE437D3E4, 0x798BF279, 400 0xE732D5E7, 0xC8438BC8, 0x37596E37, 0x6DB7DA6D, 0x8D8C018D, 0xD564B1D5, 0x4ED29C4E, 0xA9E049A9, 401 0x6CB4D86C, 0x56FAAC56, 0xF407F3F4, 0xEA25CFEA, 0x65AFCA65, 0x7A8EF47A, 0xAEE947AE, 0x08181008, 402 0xBAD56FBA, 0x7888F078, 0x256F4A25, 0x2E725C2E, 0x1C24381C, 0xA6F157A6, 0xB4C773B4, 0xC65197C6, 403 0xE823CBE8, 0xDD7CA1DD, 0x749CE874, 0x1F213E1F, 0x4BDD964B, 0xBDDC61BD, 0x8B860D8B, 0x8A850F8A, 404 0x7090E070, 0x3E427C3E, 0xB5C471B5, 0x66AACC66, 0x48D89048, 0x03050603, 0xF601F7F6, 0x0E121C0E, 405 0x61A3C261, 0x355F6A35, 0x57F9AE57, 0xB9D069B9, 0x86911786, 0xC15899C1, 0x1D273A1D, 0x9EB9279E, 406 0xE138D9E1, 0xF813EBF8, 0x98B32B98, 0x11332211, 0x69BBD269, 0xD970A9D9, 0x8E89078E, 0x94A73394, 407 0x9BB62D9B, 0x1E223C1E, 0x87921587, 0xE920C9E9, 0xCE4987CE, 0x55FFAA55, 0x28785028, 0xDF7AA5DF, 408 0x8C8F038C, 0xA1F859A1, 0x89800989, 0x0D171A0D, 0xBFDA65BF, 0xE631D7E6, 0x42C68442, 0x68B8D068, 409 0x41C38241, 0x99B02999, 0x2D775A2D, 0x0F111E0F, 0xB0CB7BB0, 0x54FCA854, 0xBBD66DBB, 0x163A2C16 410 ); 411 412 /** 413 * Precomputed mixColumns table 414 * 415 * @see Crypt_Rijndael:_encryptBlock() 416 * @see Crypt_Rijndael:_decryptBlock() 417 * @var Array 418 * @access private 419 */ 420 var $t3 = array( 421 0x6363A5C6, 0x7C7C84F8, 0x777799EE, 0x7B7B8DF6, 0xF2F20DFF, 0x6B6BBDD6, 0x6F6FB1DE, 0xC5C55491, 422 0x30305060, 0x01010302, 0x6767A9CE, 0x2B2B7D56, 0xFEFE19E7, 0xD7D762B5, 0xABABE64D, 0x76769AEC, 423 0xCACA458F, 0x82829D1F, 0xC9C94089, 0x7D7D87FA, 0xFAFA15EF, 0x5959EBB2, 0x4747C98E, 0xF0F00BFB, 424 0xADADEC41, 0xD4D467B3, 0xA2A2FD5F, 0xAFAFEA45, 0x9C9CBF23, 0xA4A4F753, 0x727296E4, 0xC0C05B9B, 425 0xB7B7C275, 0xFDFD1CE1, 0x9393AE3D, 0x26266A4C, 0x36365A6C, 0x3F3F417E, 0xF7F702F5, 0xCCCC4F83, 426 0x34345C68, 0xA5A5F451, 0xE5E534D1, 0xF1F108F9, 0x717193E2, 0xD8D873AB, 0x31315362, 0x15153F2A, 427 0x04040C08, 0xC7C75295, 0x23236546, 0xC3C35E9D, 0x18182830, 0x9696A137, 0x05050F0A, 0x9A9AB52F, 428 0x0707090E, 0x12123624, 0x80809B1B, 0xE2E23DDF, 0xEBEB26CD, 0x2727694E, 0xB2B2CD7F, 0x75759FEA, 429 0x09091B12, 0x83839E1D, 0x2C2C7458, 0x1A1A2E34, 0x1B1B2D36, 0x6E6EB2DC, 0x5A5AEEB4, 0xA0A0FB5B, 430 0x5252F6A4, 0x3B3B4D76, 0xD6D661B7, 0xB3B3CE7D, 0x29297B52, 0xE3E33EDD, 0x2F2F715E, 0x84849713, 431 0x5353F5A6, 0xD1D168B9, 0x00000000, 0xEDED2CC1, 0x20206040, 0xFCFC1FE3, 0xB1B1C879, 0x5B5BEDB6, 432 0x6A6ABED4, 0xCBCB468D, 0xBEBED967, 0x39394B72, 0x4A4ADE94, 0x4C4CD498, 0x5858E8B0, 0xCFCF4A85, 433 0xD0D06BBB, 0xEFEF2AC5, 0xAAAAE54F, 0xFBFB16ED, 0x4343C586, 0x4D4DD79A, 0x33335566, 0x85859411, 434 0x4545CF8A, 0xF9F910E9, 0x02020604, 0x7F7F81FE, 0x5050F0A0, 0x3C3C4478, 0x9F9FBA25, 0xA8A8E34B, 435 0x5151F3A2, 0xA3A3FE5D, 0x4040C080, 0x8F8F8A05, 0x9292AD3F, 0x9D9DBC21, 0x38384870, 0xF5F504F1, 436 0xBCBCDF63, 0xB6B6C177, 0xDADA75AF, 0x21216342, 0x10103020, 0xFFFF1AE5, 0xF3F30EFD, 0xD2D26DBF, 437 0xCDCD4C81, 0x0C0C1418, 0x13133526, 0xECEC2FC3, 0x5F5FE1BE, 0x9797A235, 0x4444CC88, 0x1717392E, 438 0xC4C45793, 0xA7A7F255, 0x7E7E82FC, 0x3D3D477A, 0x6464ACC8, 0x5D5DE7BA, 0x19192B32, 0x737395E6, 439 0x6060A0C0, 0x81819819, 0x4F4FD19E, 0xDCDC7FA3, 0x22226644, 0x2A2A7E54, 0x9090AB3B, 0x8888830B, 440 0x4646CA8C, 0xEEEE29C7, 0xB8B8D36B, 0x14143C28, 0xDEDE79A7, 0x5E5EE2BC, 0x0B0B1D16, 0xDBDB76AD, 441 0xE0E03BDB, 0x32325664, 0x3A3A4E74, 0x0A0A1E14, 0x4949DB92, 0x06060A0C, 0x24246C48, 0x5C5CE4B8, 442 0xC2C25D9F, 0xD3D36EBD, 0xACACEF43, 0x6262A6C4, 0x9191A839, 0x9595A431, 0xE4E437D3, 0x79798BF2, 443 0xE7E732D5, 0xC8C8438B, 0x3737596E, 0x6D6DB7DA, 0x8D8D8C01, 0xD5D564B1, 0x4E4ED29C, 0xA9A9E049, 444 0x6C6CB4D8, 0x5656FAAC, 0xF4F407F3, 0xEAEA25CF, 0x6565AFCA, 0x7A7A8EF4, 0xAEAEE947, 0x08081810, 445 0xBABAD56F, 0x787888F0, 0x25256F4A, 0x2E2E725C, 0x1C1C2438, 0xA6A6F157, 0xB4B4C773, 0xC6C65197, 446 0xE8E823CB, 0xDDDD7CA1, 0x74749CE8, 0x1F1F213E, 0x4B4BDD96, 0xBDBDDC61, 0x8B8B860D, 0x8A8A850F, 447 0x707090E0, 0x3E3E427C, 0xB5B5C471, 0x6666AACC, 0x4848D890, 0x03030506, 0xF6F601F7, 0x0E0E121C, 448 0x6161A3C2, 0x35355F6A, 0x5757F9AE, 0xB9B9D069, 0x86869117, 0xC1C15899, 0x1D1D273A, 0x9E9EB927, 449 0xE1E138D9, 0xF8F813EB, 0x9898B32B, 0x11113322, 0x6969BBD2, 0xD9D970A9, 0x8E8E8907, 0x9494A733, 450 0x9B9BB62D, 0x1E1E223C, 0x87879215, 0xE9E920C9, 0xCECE4987, 0x5555FFAA, 0x28287850, 0xDFDF7AA5, 451 0x8C8C8F03, 0xA1A1F859, 0x89898009, 0x0D0D171A, 0xBFBFDA65, 0xE6E631D7, 0x4242C684, 0x6868B8D0, 452 0x4141C382, 0x9999B029, 0x2D2D775A, 0x0F0F111E, 0xB0B0CB7B, 0x5454FCA8, 0xBBBBD66D, 0x16163A2C 453 ); 454 455 /** 456 * Precomputed invMixColumns table 457 * 458 * @see Crypt_Rijndael:_encryptBlock() 459 * @see Crypt_Rijndael:_decryptBlock() 460 * @var Array 461 * @access private 462 */ 463 var $dt0 = array( 464 0x51F4A750, 0x7E416553, 0x1A17A4C3, 0x3A275E96, 0x3BAB6BCB, 0x1F9D45F1, 0xACFA58AB, 0x4BE30393, 465 0x2030FA55, 0xAD766DF6, 0x88CC7691, 0xF5024C25, 0x4FE5D7FC, 0xC52ACBD7, 0x26354480, 0xB562A38F, 466 0xDEB15A49, 0x25BA1B67, 0x45EA0E98, 0x5DFEC0E1, 0xC32F7502, 0x814CF012, 0x8D4697A3, 0x6BD3F9C6, 467 0x038F5FE7, 0x15929C95, 0xBF6D7AEB, 0x955259DA, 0xD4BE832D, 0x587421D3, 0x49E06929, 0x8EC9C844, 468 0x75C2896A, 0xF48E7978, 0x99583E6B, 0x27B971DD, 0xBEE14FB6, 0xF088AD17, 0xC920AC66, 0x7DCE3AB4, 469 0x63DF4A18, 0xE51A3182, 0x97513360, 0x62537F45, 0xB16477E0, 0xBB6BAE84, 0xFE81A01C, 0xF9082B94, 470 0x70486858, 0x8F45FD19, 0x94DE6C87, 0x527BF8B7, 0xAB73D323, 0x724B02E2, 0xE31F8F57, 0x6655AB2A, 471 0xB2EB2807, 0x2FB5C203, 0x86C57B9A, 0xD33708A5, 0x302887F2, 0x23BFA5B2, 0x02036ABA, 0xED16825C, 472 0x8ACF1C2B, 0xA779B492, 0xF307F2F0, 0x4E69E2A1, 0x65DAF4CD, 0x0605BED5, 0xD134621F, 0xC4A6FE8A, 473 0x342E539D, 0xA2F355A0, 0x058AE132, 0xA4F6EB75, 0x0B83EC39, 0x4060EFAA, 0x5E719F06, 0xBD6E1051, 474 0x3E218AF9, 0x96DD063D, 0xDD3E05AE, 0x4DE6BD46, 0x91548DB5, 0x71C45D05, 0x0406D46F, 0x605015FF, 475 0x1998FB24, 0xD6BDE997, 0x894043CC, 0x67D99E77, 0xB0E842BD, 0x07898B88, 0xE7195B38, 0x79C8EEDB, 476 0xA17C0A47, 0x7C420FE9, 0xF8841EC9, 0x00000000, 0x09808683, 0x322BED48, 0x1E1170AC, 0x6C5A724E, 477 0xFD0EFFFB, 0x0F853856, 0x3DAED51E, 0x362D3927, 0x0A0FD964, 0x685CA621, 0x9B5B54D1, 0x24362E3A, 478 0x0C0A67B1, 0x9357E70F, 0xB4EE96D2, 0x1B9B919E, 0x80C0C54F, 0x61DC20A2, 0x5A774B69, 0x1C121A16, 479 0xE293BA0A, 0xC0A02AE5, 0x3C22E043, 0x121B171D, 0x0E090D0B, 0xF28BC7AD, 0x2DB6A8B9, 0x141EA9C8, 480 0x57F11985, 0xAF75074C, 0xEE99DDBB, 0xA37F60FD, 0xF701269F, 0x5C72F5BC, 0x44663BC5, 0x5BFB7E34, 481 0x8B432976, 0xCB23C6DC, 0xB6EDFC68, 0xB8E4F163, 0xD731DCCA, 0x42638510, 0x13972240, 0x84C61120, 482 0x854A247D, 0xD2BB3DF8, 0xAEF93211, 0xC729A16D, 0x1D9E2F4B, 0xDCB230F3, 0x0D8652EC, 0x77C1E3D0, 483 0x2BB3166C, 0xA970B999, 0x119448FA, 0x47E96422, 0xA8FC8CC4, 0xA0F03F1A, 0x567D2CD8, 0x223390EF, 484 0x87494EC7, 0xD938D1C1, 0x8CCAA2FE, 0x98D40B36, 0xA6F581CF, 0xA57ADE28, 0xDAB78E26, 0x3FADBFA4, 485 0x2C3A9DE4, 0x5078920D, 0x6A5FCC9B, 0x547E4662, 0xF68D13C2, 0x90D8B8E8, 0x2E39F75E, 0x82C3AFF5, 486 0x9F5D80BE, 0x69D0937C, 0x6FD52DA9, 0xCF2512B3, 0xC8AC993B, 0x10187DA7, 0xE89C636E, 0xDB3BBB7B, 487 0xCD267809, 0x6E5918F4, 0xEC9AB701, 0x834F9AA8, 0xE6956E65, 0xAAFFE67E, 0x21BCCF08, 0xEF15E8E6, 488 0xBAE79BD9, 0x4A6F36CE, 0xEA9F09D4, 0x29B07CD6, 0x31A4B2AF, 0x2A3F2331, 0xC6A59430, 0x35A266C0, 489 0x744EBC37, 0xFC82CAA6, 0xE090D0B0, 0x33A7D815, 0xF104984A, 0x41ECDAF7, 0x7FCD500E, 0x1791F62F, 490 0x764DD68D, 0x43EFB04D, 0xCCAA4D54, 0xE49604DF, 0x9ED1B5E3, 0x4C6A881B, 0xC12C1FB8, 0x4665517F, 491 0x9D5EEA04, 0x018C355D, 0xFA877473, 0xFB0B412E, 0xB3671D5A, 0x92DBD252, 0xE9105633, 0x6DD64713, 492 0x9AD7618C, 0x37A10C7A, 0x59F8148E, 0xEB133C89, 0xCEA927EE, 0xB761C935, 0xE11CE5ED, 0x7A47B13C, 493 0x9CD2DF59, 0x55F2733F, 0x1814CE79, 0x73C737BF, 0x53F7CDEA, 0x5FFDAA5B, 0xDF3D6F14, 0x7844DB86, 494 0xCAAFF381, 0xB968C43E, 0x3824342C, 0xC2A3405F, 0x161DC372, 0xBCE2250C, 0x283C498B, 0xFF0D9541, 495 0x39A80171, 0x080CB3DE, 0xD8B4E49C, 0x6456C190, 0x7BCB8461, 0xD532B670, 0x486C5C74, 0xD0B85742 496 ); 497 498 /** 499 * Precomputed invMixColumns table 500 * 501 * @see Crypt_Rijndael:_encryptBlock() 502 * @see Crypt_Rijndael:_decryptBlock() 503 * @var Array 504 * @access private 505 */ 506 var $dt1 = array( 507 0x5051F4A7, 0x537E4165, 0xC31A17A4, 0x963A275E, 0xCB3BAB6B, 0xF11F9D45, 0xABACFA58, 0x934BE303, 508 0x552030FA, 0xF6AD766D, 0x9188CC76, 0x25F5024C, 0xFC4FE5D7, 0xD7C52ACB, 0x80263544, 0x8FB562A3, 509 0x49DEB15A, 0x6725BA1B, 0x9845EA0E, 0xE15DFEC0, 0x02C32F75, 0x12814CF0, 0xA38D4697, 0xC66BD3F9, 510 0xE7038F5F, 0x9515929C, 0xEBBF6D7A, 0xDA955259, 0x2DD4BE83, 0xD3587421, 0x2949E069, 0x448EC9C8, 511 0x6A75C289, 0x78F48E79, 0x6B99583E, 0xDD27B971, 0xB6BEE14F, 0x17F088AD, 0x66C920AC, 0xB47DCE3A, 512 0x1863DF4A, 0x82E51A31, 0x60975133, 0x4562537F, 0xE0B16477, 0x84BB6BAE, 0x1CFE81A0, 0x94F9082B, 513 0x58704868, 0x198F45FD, 0x8794DE6C, 0xB7527BF8, 0x23AB73D3, 0xE2724B02, 0x57E31F8F, 0x2A6655AB, 514 0x07B2EB28, 0x032FB5C2, 0x9A86C57B, 0xA5D33708, 0xF2302887, 0xB223BFA5, 0xBA02036A, 0x5CED1682, 515 0x2B8ACF1C, 0x92A779B4, 0xF0F307F2, 0xA14E69E2, 0xCD65DAF4, 0xD50605BE, 0x1FD13462, 0x8AC4A6FE, 516 0x9D342E53, 0xA0A2F355, 0x32058AE1, 0x75A4F6EB, 0x390B83EC, 0xAA4060EF, 0x065E719F, 0x51BD6E10, 517 0xF93E218A, 0x3D96DD06, 0xAEDD3E05, 0x464DE6BD, 0xB591548D, 0x0571C45D, 0x6F0406D4, 0xFF605015, 518 0x241998FB, 0x97D6BDE9, 0xCC894043, 0x7767D99E, 0xBDB0E842, 0x8807898B, 0x38E7195B, 0xDB79C8EE, 519 0x47A17C0A, 0xE97C420F, 0xC9F8841E, 0x00000000, 0x83098086, 0x48322BED, 0xAC1E1170, 0x4E6C5A72, 520 0xFBFD0EFF, 0x560F8538, 0x1E3DAED5, 0x27362D39, 0x640A0FD9, 0x21685CA6, 0xD19B5B54, 0x3A24362E, 521 0xB10C0A67, 0x0F9357E7, 0xD2B4EE96, 0x9E1B9B91, 0x4F80C0C5, 0xA261DC20, 0x695A774B, 0x161C121A, 522 0x0AE293BA, 0xE5C0A02A, 0x433C22E0, 0x1D121B17, 0x0B0E090D, 0xADF28BC7, 0xB92DB6A8, 0xC8141EA9, 523 0x8557F119, 0x4CAF7507, 0xBBEE99DD, 0xFDA37F60, 0x9FF70126, 0xBC5C72F5, 0xC544663B, 0x345BFB7E, 524 0x768B4329, 0xDCCB23C6, 0x68B6EDFC, 0x63B8E4F1, 0xCAD731DC, 0x10426385, 0x40139722, 0x2084C611, 525 0x7D854A24, 0xF8D2BB3D, 0x11AEF932, 0x6DC729A1, 0x4B1D9E2F, 0xF3DCB230, 0xEC0D8652, 0xD077C1E3, 526 0x6C2BB316, 0x99A970B9, 0xFA119448, 0x2247E964, 0xC4A8FC8C, 0x1AA0F03F, 0xD8567D2C, 0xEF223390, 527 0xC787494E, 0xC1D938D1, 0xFE8CCAA2, 0x3698D40B, 0xCFA6F581, 0x28A57ADE, 0x26DAB78E, 0xA43FADBF, 528 0xE42C3A9D, 0x0D507892, 0x9B6A5FCC, 0x62547E46, 0xC2F68D13, 0xE890D8B8, 0x5E2E39F7, 0xF582C3AF, 529 0xBE9F5D80, 0x7C69D093, 0xA96FD52D, 0xB3CF2512, 0x3BC8AC99, 0xA710187D, 0x6EE89C63, 0x7BDB3BBB, 530 0x09CD2678, 0xF46E5918, 0x01EC9AB7, 0xA8834F9A, 0x65E6956E, 0x7EAAFFE6, 0x0821BCCF, 0xE6EF15E8, 531 0xD9BAE79B, 0xCE4A6F36, 0xD4EA9F09, 0xD629B07C, 0xAF31A4B2, 0x312A3F23, 0x30C6A594, 0xC035A266, 532 0x37744EBC, 0xA6FC82CA, 0xB0E090D0, 0x1533A7D8, 0x4AF10498, 0xF741ECDA, 0x0E7FCD50, 0x2F1791F6, 533 0x8D764DD6, 0x4D43EFB0, 0x54CCAA4D, 0xDFE49604, 0xE39ED1B5, 0x1B4C6A88, 0xB8C12C1F, 0x7F466551, 534 0x049D5EEA, 0x5D018C35, 0x73FA8774, 0x2EFB0B41, 0x5AB3671D, 0x5292DBD2, 0x33E91056, 0x136DD647, 535 0x8C9AD761, 0x7A37A10C, 0x8E59F814, 0x89EB133C, 0xEECEA927, 0x35B761C9, 0xEDE11CE5, 0x3C7A47B1, 536 0x599CD2DF, 0x3F55F273, 0x791814CE, 0xBF73C737, 0xEA53F7CD, 0x5B5FFDAA, 0x14DF3D6F, 0x867844DB, 537 0x81CAAFF3, 0x3EB968C4, 0x2C382434, 0x5FC2A340, 0x72161DC3, 0x0CBCE225, 0x8B283C49, 0x41FF0D95, 538 0x7139A801, 0xDE080CB3, 0x9CD8B4E4, 0x906456C1, 0x617BCB84, 0x70D532B6, 0x74486C5C, 0x42D0B857 539 ); 540 541 /** 542 * Precomputed invMixColumns table 543 * 544 * @see Crypt_Rijndael:_encryptBlock() 545 * @see Crypt_Rijndael:_decryptBlock() 546 * @var Array 547 * @access private 548 */ 549 var $dt2 = array( 550 0xA75051F4, 0x65537E41, 0xA4C31A17, 0x5E963A27, 0x6BCB3BAB, 0x45F11F9D, 0x58ABACFA, 0x03934BE3, 551 0xFA552030, 0x6DF6AD76, 0x769188CC, 0x4C25F502, 0xD7FC4FE5, 0xCBD7C52A, 0x44802635, 0xA38FB562, 552 0x5A49DEB1, 0x1B6725BA, 0x0E9845EA, 0xC0E15DFE, 0x7502C32F, 0xF012814C, 0x97A38D46, 0xF9C66BD3, 553 0x5FE7038F, 0x9C951592, 0x7AEBBF6D, 0x59DA9552, 0x832DD4BE, 0x21D35874, 0x692949E0, 0xC8448EC9, 554 0x896A75C2, 0x7978F48E, 0x3E6B9958, 0x71DD27B9, 0x4FB6BEE1, 0xAD17F088, 0xAC66C920, 0x3AB47DCE, 555 0x4A1863DF, 0x3182E51A, 0x33609751, 0x7F456253, 0x77E0B164, 0xAE84BB6B, 0xA01CFE81, 0x2B94F908, 556 0x68587048, 0xFD198F45, 0x6C8794DE, 0xF8B7527B, 0xD323AB73, 0x02E2724B, 0x8F57E31F, 0xAB2A6655, 557 0x2807B2EB, 0xC2032FB5, 0x7B9A86C5, 0x08A5D337, 0x87F23028, 0xA5B223BF, 0x6ABA0203, 0x825CED16, 558 0x1C2B8ACF, 0xB492A779, 0xF2F0F307, 0xE2A14E69, 0xF4CD65DA, 0xBED50605, 0x621FD134, 0xFE8AC4A6, 559 0x539D342E, 0x55A0A2F3, 0xE132058A, 0xEB75A4F6, 0xEC390B83, 0xEFAA4060, 0x9F065E71, 0x1051BD6E, 560 0x8AF93E21, 0x063D96DD, 0x05AEDD3E, 0xBD464DE6, 0x8DB59154, 0x5D0571C4, 0xD46F0406, 0x15FF6050, 561 0xFB241998, 0xE997D6BD, 0x43CC8940, 0x9E7767D9, 0x42BDB0E8, 0x8B880789, 0x5B38E719, 0xEEDB79C8, 562 0x0A47A17C, 0x0FE97C42, 0x1EC9F884, 0x00000000, 0x86830980, 0xED48322B, 0x70AC1E11, 0x724E6C5A, 563 0xFFFBFD0E, 0x38560F85, 0xD51E3DAE, 0x3927362D, 0xD9640A0F, 0xA621685C, 0x54D19B5B, 0x2E3A2436, 564 0x67B10C0A, 0xE70F9357, 0x96D2B4EE, 0x919E1B9B, 0xC54F80C0, 0x20A261DC, 0x4B695A77, 0x1A161C12, 565 0xBA0AE293, 0x2AE5C0A0, 0xE0433C22, 0x171D121B, 0x0D0B0E09, 0xC7ADF28B, 0xA8B92DB6, 0xA9C8141E, 566 0x198557F1, 0x074CAF75, 0xDDBBEE99, 0x60FDA37F, 0x269FF701, 0xF5BC5C72, 0x3BC54466, 0x7E345BFB, 567 0x29768B43, 0xC6DCCB23, 0xFC68B6ED, 0xF163B8E4, 0xDCCAD731, 0x85104263, 0x22401397, 0x112084C6, 568 0x247D854A, 0x3DF8D2BB, 0x3211AEF9, 0xA16DC729, 0x2F4B1D9E, 0x30F3DCB2, 0x52EC0D86, 0xE3D077C1, 569 0x166C2BB3, 0xB999A970, 0x48FA1194, 0x642247E9, 0x8CC4A8FC, 0x3F1AA0F0, 0x2CD8567D, 0x90EF2233, 570 0x4EC78749, 0xD1C1D938, 0xA2FE8CCA, 0x0B3698D4, 0x81CFA6F5, 0xDE28A57A, 0x8E26DAB7, 0xBFA43FAD, 571 0x9DE42C3A, 0x920D5078, 0xCC9B6A5F, 0x4662547E, 0x13C2F68D, 0xB8E890D8, 0xF75E2E39, 0xAFF582C3, 572 0x80BE9F5D, 0x937C69D0, 0x2DA96FD5, 0x12B3CF25, 0x993BC8AC, 0x7DA71018, 0x636EE89C, 0xBB7BDB3B, 573 0x7809CD26, 0x18F46E59, 0xB701EC9A, 0x9AA8834F, 0x6E65E695, 0xE67EAAFF, 0xCF0821BC, 0xE8E6EF15, 574 0x9BD9BAE7, 0x36CE4A6F, 0x09D4EA9F, 0x7CD629B0, 0xB2AF31A4, 0x23312A3F, 0x9430C6A5, 0x66C035A2, 575 0xBC37744E, 0xCAA6FC82, 0xD0B0E090, 0xD81533A7, 0x984AF104, 0xDAF741EC, 0x500E7FCD, 0xF62F1791, 576 0xD68D764D, 0xB04D43EF, 0x4D54CCAA, 0x04DFE496, 0xB5E39ED1, 0x881B4C6A, 0x1FB8C12C, 0x517F4665, 577 0xEA049D5E, 0x355D018C, 0x7473FA87, 0x412EFB0B, 0x1D5AB367, 0xD25292DB, 0x5633E910, 0x47136DD6, 578 0x618C9AD7, 0x0C7A37A1, 0x148E59F8, 0x3C89EB13, 0x27EECEA9, 0xC935B761, 0xE5EDE11C, 0xB13C7A47, 579 0xDF599CD2, 0x733F55F2, 0xCE791814, 0x37BF73C7, 0xCDEA53F7, 0xAA5B5FFD, 0x6F14DF3D, 0xDB867844, 580 0xF381CAAF, 0xC43EB968, 0x342C3824, 0x405FC2A3, 0xC372161D, 0x250CBCE2, 0x498B283C, 0x9541FF0D, 581 0x017139A8, 0xB3DE080C, 0xE49CD8B4, 0xC1906456, 0x84617BCB, 0xB670D532, 0x5C74486C, 0x5742D0B8 582 ); 583 584 /** 585 * Precomputed invMixColumns table 586 * 587 * @see Crypt_Rijndael:_encryptBlock() 588 * @see Crypt_Rijndael:_decryptBlock() 589 * @var Array 590 * @access private 591 */ 592 var $dt3 = array( 593 0xF4A75051, 0x4165537E, 0x17A4C31A, 0x275E963A, 0xAB6BCB3B, 0x9D45F11F, 0xFA58ABAC, 0xE303934B, 594 0x30FA5520, 0x766DF6AD, 0xCC769188, 0x024C25F5, 0xE5D7FC4F, 0x2ACBD7C5, 0x35448026, 0x62A38FB5, 595 0xB15A49DE, 0xBA1B6725, 0xEA0E9845, 0xFEC0E15D, 0x2F7502C3, 0x4CF01281, 0x4697A38D, 0xD3F9C66B, 596 0x8F5FE703, 0x929C9515, 0x6D7AEBBF, 0x5259DA95, 0xBE832DD4, 0x7421D358, 0xE0692949, 0xC9C8448E, 597 0xC2896A75, 0x8E7978F4, 0x583E6B99, 0xB971DD27, 0xE14FB6BE, 0x88AD17F0, 0x20AC66C9, 0xCE3AB47D, 598 0xDF4A1863, 0x1A3182E5, 0x51336097, 0x537F4562, 0x6477E0B1, 0x6BAE84BB, 0x81A01CFE, 0x082B94F9, 599 0x48685870, 0x45FD198F, 0xDE6C8794, 0x7BF8B752, 0x73D323AB, 0x4B02E272, 0x1F8F57E3, 0x55AB2A66, 600 0xEB2807B2, 0xB5C2032F, 0xC57B9A86, 0x3708A5D3, 0x2887F230, 0xBFA5B223, 0x036ABA02, 0x16825CED, 601 0xCF1C2B8A, 0x79B492A7, 0x07F2F0F3, 0x69E2A14E, 0xDAF4CD65, 0x05BED506, 0x34621FD1, 0xA6FE8AC4, 602 0x2E539D34, 0xF355A0A2, 0x8AE13205, 0xF6EB75A4, 0x83EC390B, 0x60EFAA40, 0x719F065E, 0x6E1051BD, 603 0x218AF93E, 0xDD063D96, 0x3E05AEDD, 0xE6BD464D, 0x548DB591, 0xC45D0571, 0x06D46F04, 0x5015FF60, 604 0x98FB2419, 0xBDE997D6, 0x4043CC89, 0xD99E7767, 0xE842BDB0, 0x898B8807, 0x195B38E7, 0xC8EEDB79, 605 0x7C0A47A1, 0x420FE97C, 0x841EC9F8, 0x00000000, 0x80868309, 0x2BED4832, 0x1170AC1E, 0x5A724E6C, 606 0x0EFFFBFD, 0x8538560F, 0xAED51E3D, 0x2D392736, 0x0FD9640A, 0x5CA62168, 0x5B54D19B, 0x362E3A24, 607 0x0A67B10C, 0x57E70F93, 0xEE96D2B4, 0x9B919E1B, 0xC0C54F80, 0xDC20A261, 0x774B695A, 0x121A161C, 608 0x93BA0AE2, 0xA02AE5C0, 0x22E0433C, 0x1B171D12, 0x090D0B0E, 0x8BC7ADF2, 0xB6A8B92D, 0x1EA9C814, 609 0xF1198557, 0x75074CAF, 0x99DDBBEE, 0x7F60FDA3, 0x01269FF7, 0x72F5BC5C, 0x663BC544, 0xFB7E345B, 610 0x4329768B, 0x23C6DCCB, 0xEDFC68B6, 0xE4F163B8, 0x31DCCAD7, 0x63851042, 0x97224013, 0xC6112084, 611 0x4A247D85, 0xBB3DF8D2, 0xF93211AE, 0x29A16DC7, 0x9E2F4B1D, 0xB230F3DC, 0x8652EC0D, 0xC1E3D077, 612 0xB3166C2B, 0x70B999A9, 0x9448FA11, 0xE9642247, 0xFC8CC4A8, 0xF03F1AA0, 0x7D2CD856, 0x3390EF22, 613 0x494EC787, 0x38D1C1D9, 0xCAA2FE8C, 0xD40B3698, 0xF581CFA6, 0x7ADE28A5, 0xB78E26DA, 0xADBFA43F, 614 0x3A9DE42C, 0x78920D50, 0x5FCC9B6A, 0x7E466254, 0x8D13C2F6, 0xD8B8E890, 0x39F75E2E, 0xC3AFF582, 615 0x5D80BE9F, 0xD0937C69, 0xD52DA96F, 0x2512B3CF, 0xAC993BC8, 0x187DA710, 0x9C636EE8, 0x3BBB7BDB, 616 0x267809CD, 0x5918F46E, 0x9AB701EC, 0x4F9AA883, 0x956E65E6, 0xFFE67EAA, 0xBCCF0821, 0x15E8E6EF, 617 0xE79BD9BA, 0x6F36CE4A, 0x9F09D4EA, 0xB07CD629, 0xA4B2AF31, 0x3F23312A, 0xA59430C6, 0xA266C035, 618 0x4EBC3774, 0x82CAA6FC, 0x90D0B0E0, 0xA7D81533, 0x04984AF1, 0xECDAF741, 0xCD500E7F, 0x91F62F17, 619 0x4DD68D76, 0xEFB04D43, 0xAA4D54CC, 0x9604DFE4, 0xD1B5E39E, 0x6A881B4C, 0x2C1FB8C1, 0x65517F46, 620 0x5EEA049D, 0x8C355D01, 0x877473FA, 0x0B412EFB, 0x671D5AB3, 0xDBD25292, 0x105633E9, 0xD647136D, 621 0xD7618C9A, 0xA10C7A37, 0xF8148E59, 0x133C89EB, 0xA927EECE, 0x61C935B7, 0x1CE5EDE1, 0x47B13C7A, 622 0xD2DF599C, 0xF2733F55, 0x14CE7918, 0xC737BF73, 0xF7CDEA53, 0xFDAA5B5F, 0x3D6F14DF, 0x44DB8678, 623 0xAFF381CA, 0x68C43EB9, 0x24342C38, 0xA3405FC2, 0x1DC37216, 0xE2250CBC, 0x3C498B28, 0x0D9541FF, 624 0xA8017139, 0x0CB3DE08, 0xB4E49CD8, 0x56C19064, 0xCB84617B, 0x32B670D5, 0x6C5C7448, 0xB85742D0 625 ); 626 627 /** 628 * The SubByte S-Box 629 * 630 * @see Crypt_Rijndael::_encryptBlock() 631 * @var Array 632 * @access private 633 */ 634 var $sbox = array( 635 0x63, 0x7C, 0x77, 0x7B, 0xF2, 0x6B, 0x6F, 0xC5, 0x30, 0x01, 0x67, 0x2B, 0xFE, 0xD7, 0xAB, 0x76, 636 0xCA, 0x82, 0xC9, 0x7D, 0xFA, 0x59, 0x47, 0xF0, 0xAD, 0xD4, 0xA2, 0xAF, 0x9C, 0xA4, 0x72, 0xC0, 637 0xB7, 0xFD, 0x93, 0x26, 0x36, 0x3F, 0xF7, 0xCC, 0x34, 0xA5, 0xE5, 0xF1, 0x71, 0xD8, 0x31, 0x15, 638 0x04, 0xC7, 0x23, 0xC3, 0x18, 0x96, 0x05, 0x9A, 0x07, 0x12, 0x80, 0xE2, 0xEB, 0x27, 0xB2, 0x75, 639 0x09, 0x83, 0x2C, 0x1A, 0x1B, 0x6E, 0x5A, 0xA0, 0x52, 0x3B, 0xD6, 0xB3, 0x29, 0xE3, 0x2F, 0x84, 640 0x53, 0xD1, 0x00, 0xED, 0x20, 0xFC, 0xB1, 0x5B, 0x6A, 0xCB, 0xBE, 0x39, 0x4A, 0x4C, 0x58, 0xCF, 641 0xD0, 0xEF, 0xAA, 0xFB, 0x43, 0x4D, 0x33, 0x85, 0x45, 0xF9, 0x02, 0x7F, 0x50, 0x3C, 0x9F, 0xA8, 642 0x51, 0xA3, 0x40, 0x8F, 0x92, 0x9D, 0x38, 0xF5, 0xBC, 0xB6, 0xDA, 0x21, 0x10, 0xFF, 0xF3, 0xD2, 643 0xCD, 0x0C, 0x13, 0xEC, 0x5F, 0x97, 0x44, 0x17, 0xC4, 0xA7, 0x7E, 0x3D, 0x64, 0x5D, 0x19, 0x73, 644 0x60, 0x81, 0x4F, 0xDC, 0x22, 0x2A, 0x90, 0x88, 0x46, 0xEE, 0xB8, 0x14, 0xDE, 0x5E, 0x0B, 0xDB, 645 0xE0, 0x32, 0x3A, 0x0A, 0x49, 0x06, 0x24, 0x5C, 0xC2, 0xD3, 0xAC, 0x62, 0x91, 0x95, 0xE4, 0x79, 646 0xE7, 0xC8, 0x37, 0x6D, 0x8D, 0xD5, 0x4E, 0xA9, 0x6C, 0x56, 0xF4, 0xEA, 0x65, 0x7A, 0xAE, 0x08, 647 0xBA, 0x78, 0x25, 0x2E, 0x1C, 0xA6, 0xB4, 0xC6, 0xE8, 0xDD, 0x74, 0x1F, 0x4B, 0xBD, 0x8B, 0x8A, 648 0x70, 0x3E, 0xB5, 0x66, 0x48, 0x03, 0xF6, 0x0E, 0x61, 0x35, 0x57, 0xB9, 0x86, 0xC1, 0x1D, 0x9E, 649 0xE1, 0xF8, 0x98, 0x11, 0x69, 0xD9, 0x8E, 0x94, 0x9B, 0x1E, 0x87, 0xE9, 0xCE, 0x55, 0x28, 0xDF, 650 0x8C, 0xA1, 0x89, 0x0D, 0xBF, 0xE6, 0x42, 0x68, 0x41, 0x99, 0x2D, 0x0F, 0xB0, 0x54, 0xBB, 0x16 651 ); 652 653 /** 654 * The inverse SubByte S-Box 655 * 656 * @see Crypt_Rijndael::_decryptBlock() 657 * @var Array 658 * @access private 659 */ 660 var $isbox = array( 661 0x52, 0x09, 0x6A, 0xD5, 0x30, 0x36, 0xA5, 0x38, 0xBF, 0x40, 0xA3, 0x9E, 0x81, 0xF3, 0xD7, 0xFB, 662 0x7C, 0xE3, 0x39, 0x82, 0x9B, 0x2F, 0xFF, 0x87, 0x34, 0x8E, 0x43, 0x44, 0xC4, 0xDE, 0xE9, 0xCB, 663 0x54, 0x7B, 0x94, 0x32, 0xA6, 0xC2, 0x23, 0x3D, 0xEE, 0x4C, 0x95, 0x0B, 0x42, 0xFA, 0xC3, 0x4E, 664 0x08, 0x2E, 0xA1, 0x66, 0x28, 0xD9, 0x24, 0xB2, 0x76, 0x5B, 0xA2, 0x49, 0x6D, 0x8B, 0xD1, 0x25, 665 0x72, 0xF8, 0xF6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xD4, 0xA4, 0x5C, 0xCC, 0x5D, 0x65, 0xB6, 0x92, 666 0x6C, 0x70, 0x48, 0x50, 0xFD, 0xED, 0xB9, 0xDA, 0x5E, 0x15, 0x46, 0x57, 0xA7, 0x8D, 0x9D, 0x84, 667 0x90, 0xD8, 0xAB, 0x00, 0x8C, 0xBC, 0xD3, 0x0A, 0xF7, 0xE4, 0x58, 0x05, 0xB8, 0xB3, 0x45, 0x06, 668 0xD0, 0x2C, 0x1E, 0x8F, 0xCA, 0x3F, 0x0F, 0x02, 0xC1, 0xAF, 0xBD, 0x03, 0x01, 0x13, 0x8A, 0x6B, 669 0x3A, 0x91, 0x11, 0x41, 0x4F, 0x67, 0xDC, 0xEA, 0x97, 0xF2, 0xCF, 0xCE, 0xF0, 0xB4, 0xE6, 0x73, 670 0x96, 0xAC, 0x74, 0x22, 0xE7, 0xAD, 0x35, 0x85, 0xE2, 0xF9, 0x37, 0xE8, 0x1C, 0x75, 0xDF, 0x6E, 671 0x47, 0xF1, 0x1A, 0x71, 0x1D, 0x29, 0xC5, 0x89, 0x6F, 0xB7, 0x62, 0x0E, 0xAA, 0x18, 0xBE, 0x1B, 672 0xFC, 0x56, 0x3E, 0x4B, 0xC6, 0xD2, 0x79, 0x20, 0x9A, 0xDB, 0xC0, 0xFE, 0x78, 0xCD, 0x5A, 0xF4, 673 0x1F, 0xDD, 0xA8, 0x33, 0x88, 0x07, 0xC7, 0x31, 0xB1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xEC, 0x5F, 674 0x60, 0x51, 0x7F, 0xA9, 0x19, 0xB5, 0x4A, 0x0D, 0x2D, 0xE5, 0x7A, 0x9F, 0x93, 0xC9, 0x9C, 0xEF, 675 0xA0, 0xE0, 0x3B, 0x4D, 0xAE, 0x2A, 0xF5, 0xB0, 0xC8, 0xEB, 0xBB, 0x3C, 0x83, 0x53, 0x99, 0x61, 676 0x17, 0x2B, 0x04, 0x7E, 0xBA, 0x77, 0xD6, 0x26, 0xE1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0C, 0x7D 677 ); 678 679 /** 680 * Default Constructor. 681 * 682 * Determines whether or not the mcrypt extension should be used. 683 * 684 * $mode could be: 685 * 686 * - CRYPT_RIJNDAEL_MODE_ECB 687 * 688 * - CRYPT_RIJNDAEL_MODE_CBC 689 * 690 * - CRYPT_RIJNDAEL_MODE_CTR 691 * 692 * - CRYPT_RIJNDAEL_MODE_CFB 693 * 694 * - CRYPT_RIJNDAEL_MODE_OFB 695 * 696 * If not explictly set, CRYPT_RIJNDAEL_MODE_CBC will be used. 697 * 698 * @see Crypt_Base::Crypt_Base() 699 * @param optional Integer $mode 700 * @access public 701 */ 702 function __construct($mode = CRYPT_RIJNDAEL_MODE_CBC) 703 { 704 parent::__construct($mode); 705 } 706 707 /** 708 * Sets the key. 709 * 710 * Keys can be of any length. Rijndael, itself, requires the use of a key that's between 128-bits and 256-bits long and 711 * whose length is a multiple of 32. If the key is less than 256-bits and the key length isn't set, we round the length 712 * up to the closest valid key length, padding $key with null bytes. If the key is more than 256-bits, we trim the 713 * excess bits. 714 * 715 * If the key is not explicitly set, it'll be assumed to be all null bytes. 716 * 717 * Note: 160/224-bit keys must explicitly set by setKeyLength(), otherwise they will be round/pad up to 192/256 bits. 718 * 719 * @see Crypt_Base:setKey() 720 * @see setKeyLength() 721 * @access public 722 * @param String $key 723 */ 724 function setKey($key) 725 { 726 parent::setKey($key); 727 728 if (!$this->explicit_key_length) { 729 $length = strlen($key); 730 switch (true) { 731 case $length <= 16: 732 $this->key_size = 16; 733 break; 734 case $length <= 24: 735 $this->key_size = 24; 736 break; 737 default: 738 $this->key_size = 32; 739 } 740 $this->_setupEngine(); 741 } 742 } 743 744 /** 745 * Sets the key length 746 * 747 * Valid key lengths are 128, 160, 192, 224, and 256. If the length is less than 128, it will be rounded up to 748 * 128. If the length is greater than 128 and invalid, it will be rounded down to the closest valid amount. 749 * 750 * Note: phpseclib extends Rijndael (and AES) for using 160- and 224-bit keys but they are officially not defined 751 * and the most (if not all) implementations are not able using 160/224-bit keys but round/pad them up to 752 * 192/256 bits as, for example, mcrypt will do. 753 * 754 * That said, if you want be compatible with other Rijndael and AES implementations, 755 * you should not setKeyLength(160) or setKeyLength(224). 756 * 757 * Additional: In case of 160- and 224-bit keys, phpseclib will/can, for that reason, not use 758 * the mcrypt php extention, even if available. 759 * This results then in slower encryption. 760 * 761 * @access public 762 * @param Integer $length 763 */ 764 function setKeyLength($length) 765 { 766 switch (true) { 767 case $length == 160: 768 $this->key_size = 20; 769 break; 770 case $length == 224: 771 $this->key_size = 28; 772 break; 773 case $length <= 128: 774 $this->key_size = 16; 775 break; 776 case $length <= 192: 777 $this->key_size = 24; 778 break; 779 default: 780 $this->key_size = 32; 781 } 782 783 $this->explicit_key_length = true; 784 $this->changed = true; 785 $this->_setupEngine(); 786 } 787 788 /** 789 * Sets the block length 790 * 791 * Valid block lengths are 128, 160, 192, 224, and 256. If the length is less than 128, it will be rounded up to 792 * 128. If the length is greater than 128 and invalid, it will be rounded down to the closest valid amount. 793 * 794 * @access public 795 * @param Integer $length 796 */ 797 function setBlockLength($length) 798 { 799 $length >>= 5; 800 if ($length > 8) { 801 $length = 8; 802 } else if ($length < 4) { 803 $length = 4; 804 } 805 $this->Nb = $length; 806 $this->block_size = $length << 2; 807 $this->changed = true; 808 $this->_setupEngine(); 809 } 810 811 /** 812 * Setup the fastest possible $engine 813 * 814 * Determines if the mcrypt (MODE_MCRYPT) $engine available 815 * and usable for the current $block_size and $key_size. 816 * 817 * If not, the slower MODE_INTERNAL $engine will be set. 818 * 819 * @see setKey() 820 * @see setKeyLength() 821 * @see setBlockLength() 822 * @access private 823 */ 824 function _setupEngine() 825 { 826 if (constant('CRYPT_' . $this->const_namespace . '_MODE') == CRYPT_MODE_INTERNAL) { 827 // No mcrypt support at all for rijndael 828 return; 829 } 830 831 // The required mcrypt module name for the current $block_size of rijndael 832 $cipher_name_mcrypt = 'rijndael-' . ($this->block_size << 3); 833 834 // Determining the availibility/usability of $cipher_name_mcrypt 835 switch (true) { 836 case $this->key_size % 8: // mcrypt is not usable for 160/224-bit keys, only for 128/192/256-bit keys 837 case !in_array($cipher_name_mcrypt, mcrypt_list_algorithms()): // $cipher_name_mcrypt is not available for the current $block_size 838 $engine = CRYPT_MODE_INTERNAL; 839 break; 840 default: 841 $engine = CRYPT_MODE_MCRYPT; 842 } 843 844 if ($this->engine == $engine && $this->cipher_name_mcrypt == $cipher_name_mcrypt) { 845 // allready set, so we not unnecessary close $this->enmcrypt/demcrypt/ecb 846 return; 847 } 848 849 // Set the $engine 850 $this->engine = $engine; 851 $this->cipher_name_mcrypt = $cipher_name_mcrypt; 852 853 if ($this->enmcrypt) { 854 // Closing the current mcrypt resource(s). _mcryptSetup() will, if needed, 855 // (re)open them with the module named in $this->cipher_name_mcrypt 856 mcrypt_module_close($this->enmcrypt); 857 mcrypt_module_close($this->demcrypt); 858 $this->enmcrypt = null; 859 $this->demcrypt = null; 860 861 if ($this->ecb) { 862 mcrypt_module_close($this->ecb); 863 $this->ecb = null; 864 } 865 } 866 } 867 868 /** 869 * Setup the CRYPT_MODE_MCRYPT $engine 870 * 871 * @see Crypt_Base::_setupMcrypt() 872 * @access private 873 */ 874 function _setupMcrypt() 875 { 876 $this->key = str_pad(substr($this->key, 0, $this->key_size), $this->key_size, "\0"); 877 parent::_setupMcrypt(); 878 } 879 880 /** 881 * Encrypts a block 882 * 883 * @access private 884 * @param String $in 885 * @return String 886 */ 887 function _encryptBlock($in) 888 { 889 static $t0, $t1, $t2, $t3, $sbox; 890 if (!$t0) { 891 for ($i = 0; $i < 256; ++$i) { 892 $t0[] = (int)$this->t0[$i]; 893 $t1[] = (int)$this->t1[$i]; 894 $t2[] = (int)$this->t2[$i]; 895 $t3[] = (int)$this->t3[$i]; 896 $sbox[] = (int)$this->sbox[$i]; 897 } 898 } 899 900 $state = array(); 901 $words = unpack('N*', $in); 902 903 $c = $this->c; 904 $w = $this->w; 905 $Nb = $this->Nb; 906 $Nr = $this->Nr; 907 908 // addRoundKey 909 $i = -1; 910 foreach ($words as $word) { 911 $state[] = $word ^ $w[0][++$i]; 912 } 913 914 // fips-197.pdf#page=19, "Figure 5. Pseudo Code for the Cipher", states that this loop has four components - 915 // subBytes, shiftRows, mixColumns, and addRoundKey. fips-197.pdf#page=30, "Implementation Suggestions Regarding 916 // Various Platforms" suggests that performs enhanced implementations are described in Rijndael-ammended.pdf. 917 // Rijndael-ammended.pdf#page=20, "Implementation aspects / 32-bit processor", discusses such an optimization. 918 // Unfortunately, the description given there is not quite correct. Per aes.spec.v316.pdf#page=19 [1], 919 // equation (7.4.7) is supposed to use addition instead of subtraction, so we'll do that here, as well. 920 921 // [1] http://fp.gladman.plus.com/cryptography_technology/rijndael/aes.spec.v316.pdf 922 $temp = array(); 923 for ($round = 1; $round < $Nr; ++$round) { 924 $i = 0; // $c[0] == 0 925 $j = $c[1]; 926 $k = $c[2]; 927 $l = $c[3]; 928 929 while ($i < $Nb) { 930 $temp[$i] = $t0[$state[$i] >> 24 & 0x000000FF] ^ 931 $t1[$state[$j] >> 16 & 0x000000FF] ^ 932 $t2[$state[$k] >> 8 & 0x000000FF] ^ 933 $t3[$state[$l] & 0x000000FF] ^ 934 $w[$round][$i]; 935 ++$i; 936 $j = ($j + 1) % $Nb; 937 $k = ($k + 1) % $Nb; 938 $l = ($l + 1) % $Nb; 939 } 940 $state = $temp; 941 } 942 943 // subWord 944 for ($i = 0; $i < $Nb; ++$i) { 945 $state[$i] = $sbox[$state[$i] & 0x000000FF] | 946 ($sbox[$state[$i] >> 8 & 0x000000FF] << 8) | 947 ($sbox[$state[$i] >> 16 & 0x000000FF] << 16) | 948 ($sbox[$state[$i] >> 24 & 0x000000FF] << 24); 949 } 950 951 // shiftRows + addRoundKey 952 $i = 0; // $c[0] == 0 953 $j = $c[1]; 954 $k = $c[2]; 955 $l = $c[3]; 956 while ($i < $Nb) { 957 $temp[$i] = ($state[$i] & 0xFF000000) ^ 958 ($state[$j] & 0x00FF0000) ^ 959 ($state[$k] & 0x0000FF00) ^ 960 ($state[$l] & 0x000000FF) ^ 961 $w[$Nr][$i]; 962 ++$i; 963 $j = ($j + 1) % $Nb; 964 $k = ($k + 1) % $Nb; 965 $l = ($l + 1) % $Nb; 966 } 967 968 switch ($Nb) { 969 case 8: 970 return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5], $temp[6], $temp[7]); 971 case 7: 972 return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5], $temp[6]); 973 case 6: 974 return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5]); 975 case 5: 976 return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4]); 977 default: 978 return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3]); 979 } 980 } 981 982 /** 983 * Decrypts a block 984 * 985 * @access private 986 * @param String $in 987 * @return String 988 */ 989 function _decryptBlock($in) 990 { 991 static $dt0, $dt1, $dt2, $dt3, $isbox; 992 if (!$dt0) { 993 for ($i = 0; $i < 256; ++$i) { 994 $dt0[] = (int)$this->dt0[$i]; 995 $dt1[] = (int)$this->dt1[$i]; 996 $dt2[] = (int)$this->dt2[$i]; 997 $dt3[] = (int)$this->dt3[$i]; 998 $isbox[] = (int)$this->isbox[$i]; 999 } 1000 } 1001 1002 $state = array(); 1003 $words = unpack('N*', $in); 1004 1005 $c = $this->c; 1006 $dw = $this->dw; 1007 $Nb = $this->Nb; 1008 $Nr = $this->Nr; 1009 1010 // addRoundKey 1011 $i = -1; 1012 foreach ($words as $word) { 1013 $state[] = $word ^ $dw[$Nr][++$i]; 1014 } 1015 1016 $temp = array(); 1017 for ($round = $Nr - 1; $round > 0; --$round) { 1018 $i = 0; // $c[0] == 0 1019 $j = $Nb - $c[1]; 1020 $k = $Nb - $c[2]; 1021 $l = $Nb - $c[3]; 1022 1023 while ($i < $Nb) { 1024 $temp[$i] = $dt0[$state[$i] >> 24 & 0x000000FF] ^ 1025 $dt1[$state[$j] >> 16 & 0x000000FF] ^ 1026 $dt2[$state[$k] >> 8 & 0x000000FF] ^ 1027 $dt3[$state[$l] & 0x000000FF] ^ 1028 $dw[$round][$i]; 1029 ++$i; 1030 $j = ($j + 1) % $Nb; 1031 $k = ($k + 1) % $Nb; 1032 $l = ($l + 1) % $Nb; 1033 } 1034 $state = $temp; 1035 } 1036 1037 // invShiftRows + invSubWord + addRoundKey 1038 $i = 0; // $c[0] == 0 1039 $j = $Nb - $c[1]; 1040 $k = $Nb - $c[2]; 1041 $l = $Nb - $c[3]; 1042 1043 while ($i < $Nb) { 1044 $word = ($state[$i] & 0xFF000000) | 1045 ($state[$j] & 0x00FF0000) | 1046 ($state[$k] & 0x0000FF00) | 1047 ($state[$l] & 0x000000FF); 1048 1049 $temp[$i] = $dw[0][$i] ^ ($isbox[$word & 0x000000FF] | 1050 ($isbox[$word >> 8 & 0x000000FF] << 8) | 1051 ($isbox[$word >> 16 & 0x000000FF] << 16) | 1052 ($isbox[$word >> 24 & 0x000000FF] << 24)); 1053 ++$i; 1054 $j = ($j + 1) % $Nb; 1055 $k = ($k + 1) % $Nb; 1056 $l = ($l + 1) % $Nb; 1057 } 1058 1059 switch ($Nb) { 1060 case 8: 1061 return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5], $temp[6], $temp[7]); 1062 case 7: 1063 return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5], $temp[6]); 1064 case 6: 1065 return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5]); 1066 case 5: 1067 return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4]); 1068 default: 1069 return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3]); 1070 } 1071 } 1072 1073 /** 1074 * Setup the key (expansion) 1075 * 1076 * @see Crypt_Base::_setupKey() 1077 * @access private 1078 */ 1079 function _setupKey() 1080 { 1081 // Each number in $rcon is equal to the previous number multiplied by two in Rijndael's finite field. 1082 // See http://en.wikipedia.org/wiki/Finite_field_arithmetic#Multiplicative_inverse 1083 static $rcon = array(0, 1084 0x01000000, 0x02000000, 0x04000000, 0x08000000, 0x10000000, 1085 0x20000000, 0x40000000, 0x80000000, 0x1B000000, 0x36000000, 1086 0x6C000000, 0xD8000000, 0xAB000000, 0x4D000000, 0x9A000000, 1087 0x2F000000, 0x5E000000, 0xBC000000, 0x63000000, 0xC6000000, 1088 0x97000000, 0x35000000, 0x6A000000, 0xD4000000, 0xB3000000, 1089 0x7D000000, 0xFA000000, 0xEF000000, 0xC5000000, 0x91000000 1090 ); 1091 1092 $this->key = str_pad(substr($this->key, 0, $this->key_size), $this->key_size, "\0"); 1093 1094 if (isset($this->kl['key']) && $this->key === $this->kl['key'] && $this->key_size === $this->kl['key_size'] && $this->block_size === $this->kl['block_size']) { 1095 // already expanded 1096 return; 1097 } 1098 $this->kl = array('key' => $this->key, 'key_size' => $this->key_size, 'block_size' => $this->block_size); 1099 1100 $this->Nk = $this->key_size >> 2; 1101 // see Rijndael-ammended.pdf#page=44 1102 $this->Nr = max($this->Nk, $this->Nb) + 6; 1103 1104 // shift offsets for Nb = 5, 7 are defined in Rijndael-ammended.pdf#page=44, 1105 // "Table 8: Shift offsets in Shiftrow for the alternative block lengths" 1106 // shift offsets for Nb = 4, 6, 8 are defined in Rijndael-ammended.pdf#page=14, 1107 // "Table 2: Shift offsets for different block lengths" 1108 switch ($this->Nb) { 1109 case 4: 1110 case 5: 1111 case 6: 1112 $this->c = array(0, 1, 2, 3); 1113 break; 1114 case 7: 1115 $this->c = array(0, 1, 2, 4); 1116 break; 1117 case 8: 1118 $this->c = array(0, 1, 3, 4); 1119 } 1120 1121 $w = array_values(unpack('N*words', $this->key)); 1122 1123 $length = $this->Nb * ($this->Nr + 1); 1124 for ($i = $this->Nk; $i < $length; $i++) { 1125 $temp = $w[$i - 1]; 1126 if ($i % $this->Nk == 0) { 1127 // according to <http://php.net/language.types.integer>, "the size of an integer is platform-dependent". 1128 // on a 32-bit machine, it's 32-bits, and on a 64-bit machine, it's 64-bits. on a 32-bit machine, 1129 // 0xFFFFFFFF << 8 == 0xFFFFFF00, but on a 64-bit machine, it equals 0xFFFFFFFF00. as such, doing 'and' 1130 // with 0xFFFFFFFF (or 0xFFFFFF00) on a 32-bit machine is unnecessary, but on a 64-bit machine, it is. 1131 $temp = (($temp << 8) & 0xFFFFFF00) | (($temp >> 24) & 0x000000FF); // rotWord 1132 $temp = $this->_subWord($temp) ^ $rcon[$i / $this->Nk]; 1133 } else if ($this->Nk > 6 && $i % $this->Nk == 4) { 1134 $temp = $this->_subWord($temp); 1135 } 1136 $w[$i] = $w[$i - $this->Nk] ^ $temp; 1137 } 1138 1139 // convert the key schedule from a vector of $Nb * ($Nr + 1) length to a matrix with $Nr + 1 rows and $Nb columns 1140 // and generate the inverse key schedule. more specifically, 1141 // according to <http://csrc.nist.gov/archive/aes/rijndael/Rijndael-ammended.pdf#page=23> (section 5.3.3), 1142 // "The key expansion for the Inverse Cipher is defined as follows: 1143 // 1. Apply the Key Expansion. 1144 // 2. Apply InvMixColumn to all Round Keys except the first and the last one." 1145 // also, see fips-197.pdf#page=27, "5.3.5 Equivalent Inverse Cipher" 1146 $temp = $this->w = $this->dw = array(); 1147 for ($i = $row = $col = 0; $i < $length; $i++, $col++) { 1148 if ($col == $this->Nb) { 1149 if ($row == 0) { 1150 $this->dw[0] = $this->w[0]; 1151 } else { 1152 // subWord + invMixColumn + invSubWord = invMixColumn 1153 $j = 0; 1154 while ($j < $this->Nb) { 1155 $dw = $this->_subWord($this->w[$row][$j]); 1156 $temp[$j] = $this->dt0[$dw >> 24 & 0x000000FF] ^ 1157 $this->dt1[$dw >> 16 & 0x000000FF] ^ 1158 $this->dt2[$dw >> 8 & 0x000000FF] ^ 1159 $this->dt3[$dw & 0x000000FF]; 1160 $j++; 1161 } 1162 $this->dw[$row] = $temp; 1163 } 1164 1165 $col = 0; 1166 $row++; 1167 } 1168 $this->w[$row][$col] = $w[$i]; 1169 } 1170 1171 $this->dw[$row] = $this->w[$row]; 1172 1173 // In case of $this->use_inline_crypt === true we have to use 1-dim key arrays (both ascending) 1174 if ($this->use_inline_crypt) { 1175 $this->dw = array_reverse($this->dw); 1176 $w = array_pop($this->w); 1177 $dw = array_pop($this->dw); 1178 foreach ($this->w as $r => $wr) { 1179 foreach ($wr as $c => $wc) { 1180 $w[] = $wc; 1181 $dw[] = $this->dw[$r][$c]; 1182 } 1183 } 1184 $this->w = $w; 1185 $this->dw = $dw; 1186 } 1187 } 1188 1189 /** 1190 * Performs S-Box substitutions 1191 * 1192 * @access private 1193 * @param Integer $word 1194 */ 1195 function _subWord($word) 1196 { 1197 $sbox = $this->sbox; 1198 1199 return $sbox[$word & 0x000000FF] | 1200 ($sbox[$word >> 8 & 0x000000FF] << 8) | 1201 ($sbox[$word >> 16 & 0x000000FF] << 16) | 1202 ($sbox[$word >> 24 & 0x000000FF] << 24); 1203 } 1204 1205 /** 1206 * Setup the performance-optimized function for de/encrypt() 1207 * 1208 * @see Crypt_Base::_setupInlineCrypt() 1209 * @access private 1210 */ 1211 function _setupInlineCrypt() 1212 { 1213 // Note: _setupInlineCrypt() will be called only if $this->changed === true 1214 // So here we are'nt under the same heavy timing-stress as we are in _de/encryptBlock() or de/encrypt(). 1215 // However...the here generated function- $code, stored as php callback in $this->inline_crypt, must work as fast as even possible. 1216 1217 $lambda_functions =& Crypt_Rijndael::_getLambdaFunctions(); 1218 1219 // The first 10 generated $lambda_functions will use the key-words hardcoded for better performance. 1220 // For memory reason we limit those ultra-optimized functions. 1221 // After that, we use pure (extracted) integer vars for the key-words which is faster than accessing them via array. 1222 if (count($lambda_functions) < 10) { 1223 $w = $this->w; 1224 $dw = $this->dw; 1225 $init_encrypt = ''; 1226 $init_decrypt = ''; 1227 } else { 1228 for ($i = 0, $cw = count($this->w); $i < $cw; ++$i) { 1229 $w[] = '$w[' . $i . ']'; 1230 $dw[] = '$dw[' . $i . ']'; 1231 } 1232 $init_encrypt = '$w = $self->w;'; 1233 $init_decrypt = '$dw = $self->dw;'; 1234 } 1235 1236 $code_hash = md5(str_pad("Crypt_Rijndael, {$this->mode}, {$this->block_size}, ", 32, "\0") . implode(',', $w)); 1237 1238 if (!isset($lambda_functions[$code_hash])) { 1239 $Nr = $this->Nr; 1240 $Nb = $this->Nb; 1241 $c = $this->c; 1242 1243 // Generating encrypt code: 1244 $init_encrypt.= ' 1245 static $t0, $t1, $t2, $t3, $sbox; 1246 if (!$t0) { 1247 for ($i = 0; $i < 256; ++$i) { 1248 $t0[$i] = (int)$self->t0[$i]; 1249 $t1[$i] = (int)$self->t1[$i]; 1250 $t2[$i] = (int)$self->t2[$i]; 1251 $t3[$i] = (int)$self->t3[$i]; 1252 $sbox[$i] = (int)$self->sbox[$i]; 1253 } 1254 } 1255 '; 1256 1257 $s = 'e'; 1258 $e = 's'; 1259 $wc = $Nb - 1; 1260 1261 // Preround: addRoundKey 1262 $encrypt_block = '$in = unpack("N*", $in);'."\n"; 1263 for ($i = 0; $i < $Nb; ++$i) { 1264 $encrypt_block .= '$s'.$i.' = $in['.($i + 1).'] ^ '.$w[++$wc].";\n"; 1265 } 1266 1267 // Mainrounds: shiftRows + subWord + mixColumns + addRoundKey 1268 for ($round = 1; $round < $Nr; ++$round) { 1269 list($s, $e) = array($e, $s); 1270 for ($i = 0; $i < $Nb; ++$i) { 1271 $encrypt_block.= 1272 '$'.$e.$i.' = 1273 $t0[($'.$s.$i .' >> 24) & 0xff] ^ 1274 $t1[($'.$s.(($i + $c[1]) % $Nb).' >> 16) & 0xff] ^ 1275 $t2[($'.$s.(($i + $c[2]) % $Nb).' >> 8) & 0xff] ^ 1276 $t3[ $'.$s.(($i + $c[3]) % $Nb).' & 0xff] ^ 1277 '.$w[++$wc].";\n"; 1278 } 1279 } 1280 1281 // Finalround: subWord + shiftRows + addRoundKey 1282 for ($i = 0; $i < $Nb; ++$i) { 1283 $encrypt_block.= 1284 '$'.$e.$i.' = 1285 $sbox[ $'.$e.$i.' & 0xff] | 1286 ($sbox[($'.$e.$i.' >> 8) & 0xff] << 8) | 1287 ($sbox[($'.$e.$i.' >> 16) & 0xff] << 16) | 1288 ($sbox[($'.$e.$i.' >> 24) & 0xff] << 24);'."\n"; 1289 } 1290 $encrypt_block .= '$in = pack("N*"'."\n"; 1291 for ($i = 0; $i < $Nb; ++$i) { 1292 $encrypt_block.= ', 1293 ($'.$e.$i .' & 0xFF000000) ^ 1294 ($'.$e.(($i + $c[1]) % $Nb).' & 0x00FF0000) ^ 1295 ($'.$e.(($i + $c[2]) % $Nb).' & 0x0000FF00) ^ 1296 ($'.$e.(($i + $c[3]) % $Nb).' & 0x000000FF) ^ 1297 '.$w[$i]."\n"; 1298 } 1299 $encrypt_block .= ');'; 1300 1301 // Generating decrypt code: 1302 $init_decrypt.= ' 1303 static $dt0, $dt1, $dt2, $dt3, $isbox; 1304 if (!$dt0) { 1305 for ($i = 0; $i < 256; ++$i) { 1306 $dt0[$i] = (int)$self->dt0[$i]; 1307 $dt1[$i] = (int)$self->dt1[$i]; 1308 $dt2[$i] = (int)$self->dt2[$i]; 1309 $dt3[$i] = (int)$self->dt3[$i]; 1310 $isbox[$i] = (int)$self->isbox[$i]; 1311 } 1312 } 1313 '; 1314 1315 $s = 'e'; 1316 $e = 's'; 1317 $wc = $Nb - 1; 1318 1319 // Preround: addRoundKey 1320 $decrypt_block = '$in = unpack("N*", $in);'."\n"; 1321 for ($i = 0; $i < $Nb; ++$i) { 1322 $decrypt_block .= '$s'.$i.' = $in['.($i + 1).'] ^ '.$dw[++$wc].';'."\n"; 1323 } 1324 1325 // Mainrounds: shiftRows + subWord + mixColumns + addRoundKey 1326 for ($round = 1; $round < $Nr; ++$round) { 1327 list($s, $e) = array($e, $s); 1328 for ($i = 0; $i < $Nb; ++$i) { 1329 $decrypt_block.= 1330 '$'.$e.$i.' = 1331 $dt0[($'.$s.$i .' >> 24) & 0xff] ^ 1332 $dt1[($'.$s.(($Nb + $i - $c[1]) % $Nb).' >> 16) & 0xff] ^ 1333 $dt2[($'.$s.(($Nb + $i - $c[2]) % $Nb).' >> 8) & 0xff] ^ 1334 $dt3[ $'.$s.(($Nb + $i - $c[3]) % $Nb).' & 0xff] ^ 1335 '.$dw[++$wc].";\n"; 1336 } 1337 } 1338 1339 // Finalround: subWord + shiftRows + addRoundKey 1340 for ($i = 0; $i < $Nb; ++$i) { 1341 $decrypt_block.= 1342 '$'.$e.$i.' = 1343 $isbox[ $'.$e.$i.' & 0xff] | 1344 ($isbox[($'.$e.$i.' >> 8) & 0xff] << 8) | 1345 ($isbox[($'.$e.$i.' >> 16) & 0xff] << 16) | 1346 ($isbox[($'.$e.$i.' >> 24) & 0xff] << 24);'."\n"; 1347 } 1348 $decrypt_block .= '$in = pack("N*"'."\n"; 1349 for ($i = 0; $i < $Nb; ++$i) { 1350 $decrypt_block.= ', 1351 ($'.$e.$i. ' & 0xFF000000) ^ 1352 ($'.$e.(($Nb + $i - $c[1]) % $Nb).' & 0x00FF0000) ^ 1353 ($'.$e.(($Nb + $i - $c[2]) % $Nb).' & 0x0000FF00) ^ 1354 ($'.$e.(($Nb + $i - $c[3]) % $Nb).' & 0x000000FF) ^ 1355 '.$dw[$i]."\n"; 1356 } 1357 $decrypt_block .= ');'; 1358 1359 $lambda_functions[$code_hash] = $this->_createInlineCryptFunction( 1360 array( 1361 'init_crypt' => '', 1362 'init_encrypt' => $init_encrypt, 1363 'init_decrypt' => $init_decrypt, 1364 'encrypt_block' => $encrypt_block, 1365 'decrypt_block' => $decrypt_block 1366 ) 1367 ); 1368 } 1369 $this->inline_crypt = $lambda_functions[$code_hash]; 1370 } 1371 } 1372 1373 // vim: ts=4:sw=4:et: 1374 // vim6: fdl=1:
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