Blowfish.php 28 KB

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  1. <?php
  2. /**
  3. * Pure-PHP implementation of Blowfish.
  4. *
  5. * Uses mcrypt, if available, and an internal implementation, otherwise.
  6. *
  7. * PHP versions 4 and 5
  8. *
  9. * Useful resources are as follows:
  10. *
  11. * - {@link http://en.wikipedia.org/wiki/Blowfish_(cipher) Wikipedia description of Blowfish}
  12. *
  13. * Here's a short example of how to use this library:
  14. * <code>
  15. * <?php
  16. * include 'Crypt/Blowfish.php';
  17. *
  18. * $blowfish = new Crypt_Blowfish();
  19. *
  20. * $blowfish->setKey('12345678901234567890123456789012');
  21. *
  22. * $plaintext = str_repeat('a', 1024);
  23. *
  24. * echo $blowfish->decrypt($blowfish->encrypt($plaintext));
  25. * ?>
  26. * </code>
  27. *
  28. * LICENSE: Permission is hereby granted, free of charge, to any person obtaining a copy
  29. * of this software and associated documentation files (the "Software"), to deal
  30. * in the Software without restriction, including without limitation the rights
  31. * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  32. * copies of the Software, and to permit persons to whom the Software is
  33. * furnished to do so, subject to the following conditions:
  34. *
  35. * The above copyright notice and this permission notice shall be included in
  36. * all copies or substantial portions of the Software.
  37. *
  38. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  39. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  40. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  41. * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  42. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  43. * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  44. * THE SOFTWARE.
  45. *
  46. * @category Crypt
  47. * @package Crypt_Blowfish
  48. * @author Jim Wigginton <terrafrost@php.net>
  49. * @author Hans-Juergen Petrich <petrich@tronic-media.com>
  50. * @copyright 2007 Jim Wigginton
  51. * @license http://www.opensource.org/licenses/mit-license.html MIT License
  52. * @link http://phpseclib.sourceforge.net
  53. */
  54. /**
  55. * Include Crypt_Base
  56. *
  57. * Base cipher class
  58. */
  59. if (!class_exists('Crypt_Base')) {
  60. include_once 'Base.php';
  61. }
  62. /**#@+
  63. * @access public
  64. * @see Crypt_Blowfish::encrypt()
  65. * @see Crypt_Blowfish::decrypt()
  66. */
  67. /**
  68. * Encrypt / decrypt using the Counter mode.
  69. *
  70. * Set to -1 since that's what Crypt/Random.php uses to index the CTR mode.
  71. *
  72. * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Counter_.28CTR.29
  73. */
  74. define('CRYPT_BLOWFISH_MODE_CTR', CRYPT_MODE_CTR);
  75. /**
  76. * Encrypt / decrypt using the Electronic Code Book mode.
  77. *
  78. * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Electronic_codebook_.28ECB.29
  79. */
  80. define('CRYPT_BLOWFISH_MODE_ECB', CRYPT_MODE_ECB);
  81. /**
  82. * Encrypt / decrypt using the Code Book Chaining mode.
  83. *
  84. * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher-block_chaining_.28CBC.29
  85. */
  86. define('CRYPT_BLOWFISH_MODE_CBC', CRYPT_MODE_CBC);
  87. /**
  88. * Encrypt / decrypt using the Cipher Feedback mode.
  89. *
  90. * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher_feedback_.28CFB.29
  91. */
  92. define('CRYPT_BLOWFISH_MODE_CFB', CRYPT_MODE_CFB);
  93. /**
  94. * Encrypt / decrypt using the Cipher Feedback mode.
  95. *
  96. * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Output_feedback_.28OFB.29
  97. */
  98. define('CRYPT_BLOWFISH_MODE_OFB', CRYPT_MODE_OFB);
  99. /**#@-*/
  100. /**#@+
  101. * @access private
  102. * @see Crypt_Base::Crypt_Base()
  103. */
  104. /**
  105. * Toggles the internal implementation
  106. */
  107. define('CRYPT_BLOWFISH_MODE_INTERNAL', CRYPT_MODE_INTERNAL);
  108. /**
  109. * Toggles the mcrypt implementation
  110. */
  111. define('CRYPT_BLOWFISH_MODE_MCRYPT', CRYPT_MODE_MCRYPT);
  112. /**#@-*/
  113. /**
  114. * Pure-PHP implementation of Blowfish.
  115. *
  116. * @package Crypt_Blowfish
  117. * @author Jim Wigginton <terrafrost@php.net>
  118. * @author Hans-Juergen Petrich <petrich@tronic-media.com>
  119. * @access public
  120. */
  121. class Crypt_Blowfish extends Crypt_Base
  122. {
  123. /**
  124. * Block Length of the cipher
  125. *
  126. * @see Crypt_Base::block_size
  127. * @var Integer
  128. * @access private
  129. */
  130. var $block_size = 8;
  131. /**
  132. * The default password key_size used by setPassword()
  133. *
  134. * @see Crypt_Base::password_key_size
  135. * @see Crypt_Base::setPassword()
  136. * @var Integer
  137. * @access private
  138. */
  139. var $password_key_size = 56;
  140. /**
  141. * The namespace used by the cipher for its constants.
  142. *
  143. * @see Crypt_Base::const_namespace
  144. * @var String
  145. * @access private
  146. */
  147. var $const_namespace = 'BLOWFISH';
  148. /**
  149. * The mcrypt specific name of the cipher
  150. *
  151. * @see Crypt_Base::cipher_name_mcrypt
  152. * @var String
  153. * @access private
  154. */
  155. var $cipher_name_mcrypt = 'blowfish';
  156. /**
  157. * Optimizing value while CFB-encrypting
  158. *
  159. * @see Crypt_Base::cfb_init_len
  160. * @var Integer
  161. * @access private
  162. */
  163. var $cfb_init_len = 500;
  164. /**
  165. * The fixed subkeys boxes ($sbox0 - $sbox3) with 256 entries each
  166. *
  167. * S-Box 1
  168. *
  169. * @access private
  170. * @var array
  171. */
  172. var $sbox0 = array (
  173. 0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
  174. 0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16, 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
  175. 0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee, 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
  176. 0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef, 0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
  177. 0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60, 0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
  178. 0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce, 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
  179. 0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e, 0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
  180. 0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193, 0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
  181. 0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88, 0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
  182. 0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e, 0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
  183. 0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3, 0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
  184. 0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88, 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
  185. 0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6, 0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
  186. 0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b, 0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
  187. 0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba, 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
  188. 0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f, 0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
  189. 0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3, 0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
  190. 0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279, 0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
  191. 0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab, 0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
  192. 0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db, 0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
  193. 0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0, 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
  194. 0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790, 0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
  195. 0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4, 0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
  196. 0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7, 0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
  197. 0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad, 0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
  198. 0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299, 0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
  199. 0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477, 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
  200. 0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49, 0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
  201. 0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa, 0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
  202. 0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41, 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
  203. 0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400, 0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
  204. 0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664, 0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a
  205. );
  206. /**
  207. * S-Box 1
  208. *
  209. * @access private
  210. * @var array
  211. */
  212. var $sbox1 = array(
  213. 0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623, 0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266,
  214. 0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1, 0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e,
  215. 0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6, 0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
  216. 0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e, 0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1,
  217. 0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737, 0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
  218. 0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff, 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
  219. 0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701, 0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7,
  220. 0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41, 0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331,
  221. 0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf, 0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
  222. 0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e, 0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
  223. 0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c, 0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2,
  224. 0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16, 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
  225. 0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b, 0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509,
  226. 0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e, 0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3,
  227. 0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f, 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
  228. 0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4, 0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960,
  229. 0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66, 0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28,
  230. 0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802, 0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
  231. 0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510, 0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf,
  232. 0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14, 0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
  233. 0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50, 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
  234. 0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8, 0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281,
  235. 0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99, 0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696,
  236. 0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128, 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
  237. 0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0, 0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
  238. 0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105, 0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250,
  239. 0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3, 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
  240. 0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00, 0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061,
  241. 0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb, 0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e,
  242. 0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735, 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
  243. 0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9, 0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340,
  244. 0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20, 0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7
  245. );
  246. /**
  247. * S-Box 2
  248. *
  249. * @access private
  250. * @var array
  251. */
  252. var $sbox2 = array(
  253. 0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934, 0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
  254. 0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af, 0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840,
  255. 0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45, 0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
  256. 0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a, 0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
  257. 0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee, 0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
  258. 0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42, 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
  259. 0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2, 0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
  260. 0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527, 0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b,
  261. 0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33, 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
  262. 0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3, 0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
  263. 0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17, 0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564,
  264. 0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b, 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
  265. 0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922, 0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
  266. 0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0, 0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e,
  267. 0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37, 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
  268. 0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804, 0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
  269. 0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3, 0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb,
  270. 0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d, 0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
  271. 0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350, 0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
  272. 0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a, 0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
  273. 0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d, 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
  274. 0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f, 0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
  275. 0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2, 0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9,
  276. 0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2, 0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
  277. 0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e, 0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
  278. 0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10, 0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169,
  279. 0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52, 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
  280. 0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5, 0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
  281. 0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634, 0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76,
  282. 0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24, 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
  283. 0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4, 0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
  284. 0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837, 0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0
  285. );
  286. /**
  287. * S-Box 3
  288. *
  289. * @access private
  290. * @var array
  291. */
  292. var $sbox3 = array(
  293. 0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b, 0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe,
  294. 0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b, 0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
  295. 0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8, 0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
  296. 0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304, 0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22,
  297. 0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4, 0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
  298. 0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9, 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
  299. 0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593, 0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51,
  300. 0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28, 0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
  301. 0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b, 0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
  302. 0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c, 0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
  303. 0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a, 0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
  304. 0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb, 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
  305. 0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991, 0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32,
  306. 0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680, 0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
  307. 0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae, 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
  308. 0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5, 0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47,
  309. 0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370, 0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
  310. 0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84, 0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
  311. 0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8, 0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd,
  312. 0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9, 0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
  313. 0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38, 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
  314. 0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c, 0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525,
  315. 0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1, 0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
  316. 0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964, 0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
  317. 0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8, 0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
  318. 0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f, 0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
  319. 0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02, 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
  320. 0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614, 0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a,
  321. 0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6, 0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
  322. 0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0, 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
  323. 0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e, 0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9,
  324. 0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f, 0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6
  325. );
  326. /**
  327. * P-Array consists of 18 32-bit subkeys
  328. *
  329. * @var array $parray
  330. * @access private
  331. */
  332. var $parray = array(
  333. 0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344, 0xa4093822, 0x299f31d0,
  334. 0x082efa98, 0xec4e6c89, 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
  335. 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917, 0x9216d5d9, 0x8979fb1b
  336. );
  337. /**
  338. * The BCTX-working Array
  339. *
  340. * Holds the expanded key [p] and the key-depended s-boxes [sb]
  341. *
  342. * @var array $bctx
  343. * @access private
  344. */
  345. var $bctx;
  346. /**
  347. * Holds the last used key
  348. *
  349. * @var Array
  350. * @access private
  351. */
  352. var $kl;
  353. /**
  354. * Sets the key.
  355. *
  356. * Keys can be of any length. Blowfish, itself, requires the use of a key between 32 and max. 448-bits long.
  357. * If the key is less than 32-bits we NOT fill the key to 32bit but let the key as it is to be compatible
  358. * with mcrypt because mcrypt act this way with blowfish key's < 32 bits.
  359. *
  360. * If the key is more than 448-bits, we trim the excess bits.
  361. *
  362. * If the key is not explicitly set, or empty, it'll be assumed a 128 bits key to be all null bytes.
  363. *
  364. * @access public
  365. * @see Crypt_Base::setKey()
  366. * @param String $key
  367. */
  368. function setKey($key)
  369. {
  370. $keylength = strlen($key);
  371. if (!$keylength) {
  372. $key = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
  373. } elseif ($keylength > 56) {
  374. $key = substr($key, 0, 56);
  375. }
  376. parent::setKey($key);
  377. }
  378. /**
  379. * Setup the key (expansion)
  380. *
  381. * @see Crypt_Base::_setupKey()
  382. * @access private
  383. */
  384. function _setupKey()
  385. {
  386. if (isset($this->kl['key']) && $this->key === $this->kl['key']) {
  387. // already expanded
  388. return;
  389. }
  390. $this->kl = array('key' => $this->key);
  391. /* key-expanding p[] and S-Box building sb[] */
  392. $this->bctx = array(
  393. 'p' => array(),
  394. 'sb' => array(
  395. $this->sbox0,
  396. $this->sbox1,
  397. $this->sbox2,
  398. $this->sbox3
  399. )
  400. );
  401. // unpack binary string in unsigned chars
  402. $key = array_values(unpack('C*', $this->key));
  403. $keyl = count($key);
  404. for ($j = 0, $i = 0; $i < 18; ++$i) {
  405. // xor P1 with the first 32-bits of the key, xor P2 with the second 32-bits ...
  406. for ($data = 0, $k = 0; $k < 4; ++$k) {
  407. $data = ($data << 8) | $key[$j];
  408. if (++$j >= $keyl) {
  409. $j = 0;
  410. }
  411. }
  412. $this->bctx['p'][] = $this->parray[$i] ^ $data;
  413. }
  414. // encrypt the zero-string, replace P1 and P2 with the encrypted data,
  415. // encrypt P3 and P4 with the new P1 and P2, do it with all P-array and subkeys
  416. $data = "\0\0\0\0\0\0\0\0";
  417. for ($i = 0; $i < 18; $i += 2) {
  418. list($l, $r) = array_values(unpack('N*', $data = $this->_encryptBlock($data)));
  419. $this->bctx['p'][$i ] = $l;
  420. $this->bctx['p'][$i + 1] = $r;
  421. }
  422. for ($i = 0; $i < 4; ++$i) {
  423. for ($j = 0; $j < 256; $j += 2) {
  424. list($l, $r) = array_values(unpack('N*', $data = $this->_encryptBlock($data)));
  425. $this->bctx['sb'][$i][$j ] = $l;
  426. $this->bctx['sb'][$i][$j + 1] = $r;
  427. }
  428. }
  429. }
  430. /**
  431. * Encrypts a block
  432. *
  433. * @access private
  434. * @param String $in
  435. * @return String
  436. */
  437. function _encryptBlock($in)
  438. {
  439. $p = $this->bctx["p"];
  440. // extract($this->bctx["sb"], EXTR_PREFIX_ALL, "sb"); // slower
  441. $sb_0 = $this->bctx["sb"][0];
  442. $sb_1 = $this->bctx["sb"][1];
  443. $sb_2 = $this->bctx["sb"][2];
  444. $sb_3 = $this->bctx["sb"][3];
  445. $in = unpack("N*", $in);
  446. $l = $in[1];
  447. $r = $in[2];
  448. for ($i = 0; $i < 16; $i+= 2) {
  449. $l^= $p[$i];
  450. $r^= ($sb_0[$l >> 24 & 0xff] +
  451. $sb_1[$l >> 16 & 0xff] ^
  452. $sb_2[$l >> 8 & 0xff]) +
  453. $sb_3[$l & 0xff];
  454. $r^= $p[$i + 1];
  455. $l^= ($sb_0[$r >> 24 & 0xff] +
  456. $sb_1[$r >> 16 & 0xff] ^
  457. $sb_2[$r >> 8 & 0xff]) +
  458. $sb_3[$r & 0xff];
  459. }
  460. return pack("N*", $r ^ $p[17], $l ^ $p[16]);
  461. }
  462. /**
  463. * Decrypts a block
  464. *
  465. * @access private
  466. * @param String $in
  467. * @return String
  468. */
  469. function _decryptBlock($in)
  470. {
  471. $p = $this->bctx["p"];
  472. $sb_0 = $this->bctx["sb"][0];
  473. $sb_1 = $this->bctx["sb"][1];
  474. $sb_2 = $this->bctx["sb"][2];
  475. $sb_3 = $this->bctx["sb"][3];
  476. $in = unpack("N*", $in);
  477. $l = $in[1];
  478. $r = $in[2];
  479. for ($i = 17; $i > 2; $i-= 2) {
  480. $l^= $p[$i];
  481. $r^= ($sb_0[$l >> 24 & 0xff] +
  482. $sb_1[$l >> 16 & 0xff] ^
  483. $sb_2[$l >> 8 & 0xff]) +
  484. $sb_3[$l & 0xff];
  485. $r^= $p[$i - 1];
  486. $l^= ($sb_0[$r >> 24 & 0xff] +
  487. $sb_1[$r >> 16 & 0xff] ^
  488. $sb_2[$r >> 8 & 0xff]) +
  489. $sb_3[$r & 0xff];
  490. }
  491. return pack("N*", $r ^ $p[0], $l ^ $p[1]);
  492. }
  493. /**
  494. * Setup the performance-optimized function for de/encrypt()
  495. *
  496. * @see Crypt_Base::_setupInlineCrypt()
  497. * @access private
  498. */
  499. function _setupInlineCrypt()
  500. {
  501. $lambda_functions =& Crypt_Blowfish::_getLambdaFunctions();
  502. // We create max. 10 hi-optimized code for memory reason. Means: For each $key one ultra fast inline-crypt function.
  503. // After that, we'll still create very fast optimized code but not the hi-ultimative code, for each $mode one.
  504. $gen_hi_opt_code = (bool)( count($lambda_functions) < 10);
  505. switch (true) {
  506. case $gen_hi_opt_code:
  507. $code_hash = md5(str_pad("Crypt_Blowfish, {$this->mode}, ", 32, "\0") . $this->key);
  508. break;
  509. default:
  510. $code_hash = "Crypt_Blowfish, {$this->mode}";
  511. }
  512. if (!isset($lambda_functions[$code_hash])) {
  513. switch (true) {
  514. case $gen_hi_opt_code:
  515. $p = $this->bctx['p'];
  516. $init_crypt = '
  517. static $sb_0, $sb_1, $sb_2, $sb_3;
  518. if (!$sb_0) {
  519. $sb_0 = $self->bctx["sb"][0];
  520. $sb_1 = $self->bctx["sb"][1];
  521. $sb_2 = $self->bctx["sb"][2];
  522. $sb_3 = $self->bctx["sb"][3];
  523. }
  524. ';
  525. break;
  526. default:
  527. $p = array();
  528. for ($i = 0; $i < 18; ++$i) {
  529. $p[] = '$p_' . $i;
  530. }
  531. $init_crypt = '
  532. list($sb_0, $sb_1, $sb_2, $sb_3) = $self->bctx["sb"];
  533. list(' . implode(',', $p) . ') = $self->bctx["p"];
  534. ';
  535. }
  536. // Generating encrypt code:
  537. $encrypt_block = '
  538. $in = unpack("N*", $in);
  539. $l = $in[1];
  540. $r = $in[2];
  541. ';
  542. for ($i = 0; $i < 16; $i+= 2) {
  543. $encrypt_block.= '
  544. $l^= ' . $p[$i] . ';
  545. $r^= ($sb_0[$l >> 24 & 0xff] +
  546. $sb_1[$l >> 16 & 0xff] ^
  547. $sb_2[$l >> 8 & 0xff]) +
  548. $sb_3[$l & 0xff];
  549. $r^= ' . $p[$i + 1] . ';
  550. $l^= ($sb_0[$r >> 24 & 0xff] +
  551. $sb_1[$r >> 16 & 0xff] ^
  552. $sb_2[$r >> 8 & 0xff]) +
  553. $sb_3[$r & 0xff];
  554. ';
  555. }
  556. $encrypt_block.= '
  557. $in = pack("N*",
  558. $r ^ ' . $p[17] . ',
  559. $l ^ ' . $p[16] . '
  560. );
  561. ';
  562. // Generating decrypt code:
  563. $decrypt_block = '
  564. $in = unpack("N*", $in);
  565. $l = $in[1];
  566. $r = $in[2];
  567. ';
  568. for ($i = 17; $i > 2; $i-= 2) {
  569. $decrypt_block.= '
  570. $l^= ' . $p[$i] . ';
  571. $r^= ($sb_0[$l >> 24 & 0xff] +
  572. $sb_1[$l >> 16 & 0xff] ^
  573. $sb_2[$l >> 8 & 0xff]) +
  574. $sb_3[$l & 0xff];
  575. $r^= ' . $p[$i - 1] . ';
  576. $l^= ($sb_0[$r >> 24 & 0xff] +
  577. $sb_1[$r >> 16 & 0xff] ^
  578. $sb_2[$r >> 8 & 0xff]) +
  579. $sb_3[$r & 0xff];
  580. ';
  581. }
  582. $decrypt_block.= '
  583. $in = pack("N*",
  584. $r ^ ' . $p[0] . ',
  585. $l ^ ' . $p[1] . '
  586. );
  587. ';
  588. $lambda_functions[$code_hash] = $this->_createInlineCryptFunction(
  589. array(
  590. 'init_crypt' => $init_crypt,
  591. 'init_encrypt' => '',
  592. 'init_decrypt' => '',
  593. 'encrypt_block' => $encrypt_block,
  594. 'decrypt_block' => $decrypt_block
  595. )
  596. );
  597. }
  598. $this->inline_crypt = $lambda_functions[$code_hash];
  599. }
  600. }