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/src/gnu-crypto/source/gnu/crypto/cipher/Blowfish.java

https://github.com/clibrepo/04f6ea02286af71632b72d73554979a61da424cf681886674b21ecd595715c12
Java | 584 lines | 440 code | 43 blank | 101 comment | 12 complexity | b0b1757b0012ca209d357886d0e0e507 MD5 | raw file
  1. package gnu.crypto.cipher;
  2. // ----------------------------------------------------------------------------
  3. // $Id: Blowfish.java,v 1.2 2002/11/07 17:17:44 raif Exp $
  4. //
  5. // Copyright (C) 2001, 2002, Free Software Foundation, Inc.
  6. //
  7. // This file is part of GNU Crypto.
  8. //
  9. // GNU Crypto is free software; you can redistribute it and/or modify
  10. // it under the terms of the GNU General Public License as published by
  11. // the Free Software Foundation; either version 2, or (at your option)
  12. // any later version.
  13. //
  14. // GNU Crypto is distributed in the hope that it will be useful, but
  15. // WITHOUT ANY WARRANTY; without even the implied warranty of
  16. // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17. // General Public License for more details.
  18. //
  19. // You should have received a copy of the GNU General Public License
  20. // along with this program; see the file COPYING. If not, write to the
  21. //
  22. // Free Software Foundation Inc.,
  23. // 59 Temple Place - Suite 330,
  24. // Boston, MA 02111-1307
  25. // USA
  26. //
  27. // Linking this library statically or dynamically with other modules is
  28. // making a combined work based on this library. Thus, the terms and
  29. // conditions of the GNU General Public License cover the whole
  30. // combination.
  31. //
  32. // As a special exception, the copyright holders of this library give
  33. // you permission to link this library with independent modules to
  34. // produce an executable, regardless of the license terms of these
  35. // independent modules, and to copy and distribute the resulting
  36. // executable under terms of your choice, provided that you also meet,
  37. // for each linked independent module, the terms and conditions of the
  38. // license of that module. An independent module is a module which is
  39. // not derived from or based on this library. If you modify this
  40. // library, you may extend this exception to your version of the
  41. // library, but you are not obligated to do so. If you do not wish to
  42. // do so, delete this exception statement from your version.
  43. // --------------------------------------------------------------------------
  44. //
  45. // Based on the C implementation from the GNU Privacy Guard.
  46. //
  47. // --------------------------------------------------------------------------
  48. import gnu.crypto.Registry;
  49. import gnu.crypto.util.Util;
  50. import java.util.Collections;
  51. import java.util.Iterator;
  52. /**
  53. * Blowfish is a 16-round, 64-bit Feistel cipher designed by Bruce
  54. * Schneier. It accepts a variable-length key of up to 448 bits.
  55. *
  56. * <p>References:</p>
  57. * <ol>
  58. * <li>Schneier, Bruce: <i>Applied Cryptography</i>, Second Edition,
  59. * 336--339, 647--654 (1996 Bruce Schneier).</li>
  60. * <li><a href="http://www.counterpane.com/blowfish.html">The
  61. * Blowfish Encryption Algorithm.</a></li>
  62. * </ol>
  63. */
  64. public class Blowfish extends BaseCipher {
  65. // Constants and variables
  66. // -----------------------------------------------------------------
  67. private static final int DEFAULT_BLOCK_SIZE = 8;
  68. private static final int DEFAULT_KEY_SIZE = 8;
  69. private static final int MAX_KEY_LENGTH = 56;
  70. /** Initial value of the p-array. */
  71. private static final int[] P = {
  72. 0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344, 0xa4093822, 0x299f31d0,
  73. 0x082efa98, 0xec4e6c89, 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
  74. 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917, 0x9216d5d9, 0x8979fb1b
  75. };
  76. /** Initial value of S-box 1. */
  77. static final int[] KS0 = {
  78. 0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 0xb8e1afed, 0x6a267e96,
  79. 0xba7c9045, 0xf12c7f99, 0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
  80. 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e, 0x0d95748f, 0x728eb658,
  81. 0x718bcd58, 0x82154aee, 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
  82. 0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef, 0x8e79dcb0, 0x603a180e,
  83. 0x6c9e0e8b, 0xb01e8a3e, 0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
  84. 0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440, 0x55ca396a, 0x2aab10b6,
  85. 0xb4cc5c34, 0x1141e8ce, 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
  86. 0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e, 0xafd6ba33, 0x6c24cf5c,
  87. 0x7a325381, 0x28958677, 0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
  88. 0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032, 0xef845d5d, 0xe98575b1,
  89. 0xdc262302, 0xeb651b88, 0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
  90. 0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e, 0x21c66842, 0xf6e96c9a,
  91. 0x670c9c61, 0xabd388f0, 0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
  92. 0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98, 0xa1f1651d, 0x39af0176,
  93. 0x66ca593e, 0x82430e88, 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
  94. 0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6, 0x4ed3aa62, 0x363f7706,
  95. 0x1bfedf72, 0x429b023d, 0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
  96. 0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7, 0xe3fe501a, 0xb6794c3b,
  97. 0x976ce0bd, 0x04c006ba, 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
  98. 0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f, 0x6dfc511f, 0x9b30952c,
  99. 0xcc814544, 0xaf5ebd09, 0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
  100. 0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb, 0x5579c0bd, 0x1a60320a,
  101. 0xd6a100c6, 0x402c7279, 0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
  102. 0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab, 0x323db5fa, 0xfd238760,
  103. 0x53317b48, 0x3e00df82, 0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
  104. 0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573, 0x695b27b0, 0xbbca58c8,
  105. 0xe1ffa35d, 0xb8f011a0, 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
  106. 0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790, 0xe1ddf2da, 0xa4cb7e33,
  107. 0x62fb1341, 0xcee4c6e8, 0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
  108. 0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0, 0xd08ed1d0, 0xafc725e0,
  109. 0x8e3c5b2f, 0x8e7594b7, 0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
  110. 0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad, 0x2f2f2218, 0xbe0e1777,
  111. 0xea752dfe, 0x8b021fa1, 0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
  112. 0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9, 0x165fa266, 0x80957705,
  113. 0x93cc7314, 0x211a1477, 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
  114. 0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49, 0x00250e2d, 0x2071b35e,
  115. 0x226800bb, 0x57b8e0af, 0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
  116. 0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5, 0x83260376, 0x6295cfa9,
  117. 0x11c81968, 0x4e734a41, 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
  118. 0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400, 0x08ba6fb5, 0x571be91f,
  119. 0xf296ec6b, 0x2a0dd915, 0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
  120. 0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a
  121. };
  122. /** Initial value of S-box 2. */
  123. private static final int[] KS1 = {
  124. 0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623, 0xad6ea6b0, 0x49a7df7d,
  125. 0x9cee60b8, 0x8fedb266, 0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
  126. 0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e, 0x3f54989a, 0x5b429d65,
  127. 0x6b8fe4d6, 0x99f73fd6, 0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
  128. 0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e, 0x09686b3f, 0x3ebaefc9,
  129. 0x3c971814, 0x6b6a70a1, 0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
  130. 0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8, 0xb03ada37, 0xf0500c0d,
  131. 0xf01c1f04, 0x0200b3ff, 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
  132. 0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701, 0x3ae5e581, 0x37c2dadc,
  133. 0xc8b57634, 0x9af3dda7, 0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
  134. 0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331, 0x4e548b38, 0x4f6db908,
  135. 0x6f420d03, 0xf60a04bf, 0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
  136. 0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e, 0x5512721f, 0x2e6b7124,
  137. 0x501adde6, 0x9f84cd87, 0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
  138. 0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2, 0xef1c1847, 0x3215d908,
  139. 0xdd433b37, 0x24c2ba16, 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
  140. 0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b, 0x043556f1, 0xd7a3c76b,
  141. 0x3c11183b, 0x5924a509, 0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
  142. 0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3, 0x771fe71c, 0x4e3d06fa,
  143. 0x2965dcb9, 0x99e71d0f, 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
  144. 0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4, 0xf2f74ea7, 0x361d2b3d,
  145. 0x1939260f, 0x19c27960, 0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
  146. 0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28, 0xc332ddef, 0xbe6c5aa5,
  147. 0x65582185, 0x68ab9802, 0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
  148. 0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510, 0x13cca830, 0xeb61bd96,
  149. 0x0334fe1e, 0xaa0363cf, 0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
  150. 0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e, 0x648b1eaf, 0x19bdf0ca,
  151. 0xa02369b9, 0x655abb50, 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
  152. 0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8, 0xf837889a, 0x97e32d77,
  153. 0x11ed935f, 0x16681281, 0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
  154. 0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696, 0xcdb30aeb, 0x532e3054,
  155. 0x8fd948e4, 0x6dbc3128, 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
  156. 0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0, 0x45eee2b6, 0xa3aaabea,
  157. 0xdb6c4f15, 0xfacb4fd0, 0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
  158. 0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250, 0xcf62a1f2, 0x5b8d2646,
  159. 0xfc8883a0, 0xc1c7b6a3, 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
  160. 0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00, 0x58428d2a, 0x0c55f5ea,
  161. 0x1dadf43e, 0x233f7061, 0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
  162. 0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e, 0xa6078084, 0x19f8509e,
  163. 0xe8efd855, 0x61d99735, 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
  164. 0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9, 0xdb73dbd3, 0x105588cd,
  165. 0x675fda79, 0xe3674340, 0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
  166. 0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7
  167. };
  168. /** Initial value of S-box 3. */
  169. private static final int[] KS2 = {
  170. 0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934, 0x411520f7, 0x7602d4f7,
  171. 0xbcf46b2e, 0xd4a20068, 0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af,
  172. 0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840, 0x4d95fc1d, 0x96b591af,
  173. 0x70f4ddd3, 0x66a02f45, 0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
  174. 0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a, 0x28507825, 0x530429f4,
  175. 0x0a2c86da, 0xe9b66dfb, 0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee,
  176. 0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6, 0xaace1e7c, 0xd3375fec,
  177. 0xce78a399, 0x406b2a42, 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
  178. 0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2, 0x3a6efa74, 0xdd5b4332,
  179. 0x6841e7f7, 0xca7820fb, 0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
  180. 0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b, 0x55a867bc, 0xa1159a58,
  181. 0xcca92963, 0x99e1db33, 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
  182. 0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3, 0x95c11548, 0xe4c66d22,
  183. 0x48c1133f, 0xc70f86dc, 0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17,
  184. 0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564, 0x257b7834, 0x602a9c60,
  185. 0xdff8e8a3, 0x1f636c1b, 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
  186. 0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922, 0x85b2a20e, 0xe6ba0d99,
  187. 0xde720c8c, 0x2da2f728, 0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0,
  188. 0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e, 0x0a476341, 0x992eff74,
  189. 0x3a6f6eab, 0xf4f8fd37, 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
  190. 0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804, 0xf1290dc7, 0xcc00ffa3,
  191. 0xb5390f92, 0x690fed0b, 0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3,
  192. 0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb, 0x37392eb3, 0xcc115979,
  193. 0x8026e297, 0xf42e312d, 0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
  194. 0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350, 0x1a6b1018, 0x11caedfa,
  195. 0x3d25bdd8, 0xe2e1c3c9, 0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a,
  196. 0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe, 0x9dbc8057, 0xf0f7c086,
  197. 0x60787bf8, 0x6003604d, 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
  198. 0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f, 0x77a057be, 0xbde8ae24,
  199. 0x55464299, 0xbf582e61, 0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
  200. 0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9, 0x7aeb2661, 0x8b1ddf84,
  201. 0x846a0e79, 0x915f95e2, 0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
  202. 0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e, 0xb77f19b6, 0xe0a9dc09,
  203. 0x662d09a1, 0xc4324633, 0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10,
  204. 0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169, 0xdcb7da83, 0x573906fe,
  205. 0xa1e2ce9b, 0x4fcd7f52, 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
  206. 0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5, 0xf0177a28, 0xc0f586e0,
  207. 0x006058aa, 0x30dc7d62, 0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634,
  208. 0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76, 0x6f05e409, 0x4b7c0188,
  209. 0x39720a3d, 0x7c927c24, 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
  210. 0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4, 0x1e50ef5e, 0xb161e6f8,
  211. 0xa28514d9, 0x6c51133c, 0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837,
  212. 0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0
  213. };
  214. /** Initial value of S-box 4. */
  215. private static final int[] KS3 = {
  216. 0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b, 0x5cb0679e, 0x4fa33742,
  217. 0xd3822740, 0x99bc9bbe, 0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
  218. 0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4, 0x5748ab2f, 0xbc946e79,
  219. 0xc6a376d2, 0x6549c2c8, 0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
  220. 0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304, 0xa1fad5f0, 0x6a2d519a,
  221. 0x63ef8ce2, 0x9a86ee22, 0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
  222. 0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6, 0x2826a2f9, 0xa73a3ae1,
  223. 0x4ba99586, 0xef5562e9, 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
  224. 0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593, 0xe990fd5a, 0x9e34d797,
  225. 0x2cf0b7d9, 0x022b8b51, 0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
  226. 0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c, 0xe029ac71, 0xe019a5e6,
  227. 0x47b0acfd, 0xed93fa9b, 0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
  228. 0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c, 0x15056dd4, 0x88f46dba,
  229. 0x03a16125, 0x0564f0bd, 0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
  230. 0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319, 0x7533d928, 0xb155fdf5,
  231. 0x03563482, 0x8aba3cbb, 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
  232. 0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991, 0xea7a90c2, 0xfb3e7bce,
  233. 0x5121ce64, 0x774fbe32, 0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
  234. 0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166, 0xb39a460a, 0x6445c0dd,
  235. 0x586cdecf, 0x1c20c8ae, 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
  236. 0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5, 0x72eacea8, 0xfa6484bb,
  237. 0x8d6612ae, 0xbf3c6f47, 0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
  238. 0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d, 0x4040cb08, 0x4eb4e2cc,
  239. 0x34d2466a, 0x0115af84, 0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
  240. 0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8, 0x611560b1, 0xe7933fdc,
  241. 0xbb3a792b, 0x344525bd, 0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
  242. 0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7, 0x1a908749, 0xd44fbd9a,
  243. 0xd0dadecb, 0xd50ada38, 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
  244. 0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c, 0xbf97222c, 0x15e6fc2a,
  245. 0x0f91fc71, 0x9b941525, 0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
  246. 0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442, 0xe0ec6e0e, 0x1698db3b,
  247. 0x4c98a0be, 0x3278e964, 0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
  248. 0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8, 0xdf359f8d, 0x9b992f2e,
  249. 0xe60b6f47, 0x0fe3f11d, 0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
  250. 0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299, 0xf523f357, 0xa6327623,
  251. 0x93a83531, 0x56cccd02, 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
  252. 0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614, 0xe6c6c7bd, 0x327a140a,
  253. 0x45e1d006, 0xc3f27b9a, 0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
  254. 0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b, 0x53113ec0, 0x1640e3d3,
  255. 0x38abbd60, 0x2547adf0, 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
  256. 0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e, 0x1948c25c, 0x02fb8a8c,
  257. 0x01c36ae4, 0xd6ebe1f9, 0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
  258. 0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6
  259. };
  260. /** Cache of the self test. */
  261. private static Boolean valid;
  262. /**
  263. * Test vector, as published in
  264. * href="http://www.counterpane.com/vectors.txt">http://www.counterpane.com/vectors.txt</a>.
  265. *
  266. * KEY=0000000000000000
  267. * PT=0000000000000000
  268. * CT=4EF997456198DD78
  269. */
  270. private static final byte[] TV_KEY =
  271. Util.toBytesFromString("0000000000000000");
  272. private static final byte[] TV_CT =
  273. Util.toBytesFromString("4EF997456198DD78");
  274. // Constructors
  275. // -----------------------------------------------------------------------
  276. public Blowfish() {
  277. super(Registry.BLOWFISH_CIPHER, DEFAULT_BLOCK_SIZE, DEFAULT_KEY_SIZE);
  278. }
  279. // Clonable interface implementation.
  280. // -----------------------------------------------------------------------
  281. public Object clone() {
  282. Blowfish result = new Blowfish();
  283. result.currentBlockSize = currentBlockSize;
  284. return result;
  285. }
  286. // Implementations of abstract methods from BaseCipher
  287. // -----------------------------------------------------------------------
  288. public Iterator keySizes() {
  289. return new Iterator() {
  290. private int i = 0;
  291. public boolean hasNext() {
  292. return i <= MAX_KEY_LENGTH-8;
  293. }
  294. public Object next() {
  295. if (hasNext()) {
  296. i += 8;
  297. return new Integer(i);
  298. }
  299. return null;
  300. }
  301. public void remove() {
  302. throw new UnsupportedOperationException();
  303. }
  304. };
  305. }
  306. public Iterator blockSizes() {
  307. return Collections.singleton(new Integer(DEFAULT_BLOCK_SIZE)).iterator();
  308. }
  309. public Object makeKey(byte[] k, int bs) {
  310. Context ctx = new Context();
  311. System.arraycopy(P, 0, ctx.p, 0, P.length);
  312. System.arraycopy(KS0, 0, ctx.s0, 0, KS0.length);
  313. System.arraycopy(KS1, 0, ctx.s1, 0, KS1.length);
  314. System.arraycopy(KS2, 0, ctx.s2, 0, KS2.length);
  315. System.arraycopy(KS3, 0, ctx.s3, 0, KS3.length);
  316. // XOR the key with the P-box
  317. int l = 0;
  318. for (int i = 0; i < ctx.p.length; i++) {
  319. int data = 0;
  320. for (int j = 0; j < 4; j++) {
  321. data = (data << 8) | (k[l++]&0xff);
  322. if (l >= k.length) {
  323. l = 0;
  324. }
  325. }
  326. ctx.p[i] ^= data;
  327. }
  328. // We swap the left and right words here only, so we can avoid
  329. // swapping altogether during encryption/decryption.
  330. int t;
  331. Block x = new Block();
  332. x.left = x.right = 0;
  333. for (int i = 0; i < ctx.p.length; i += 2) {
  334. blowfishEncrypt(x, ctx);
  335. ctx.p[i ] = x.right;
  336. ctx.p[i+1] = x.left;
  337. t = x.right;
  338. x.right = x.left;
  339. x.left = t;
  340. }
  341. for (int i = 0; i < ctx.s0.length; i += 2) {
  342. blowfishEncrypt(x, ctx);
  343. ctx.s0[i ] = x.right;
  344. ctx.s0[i+1] = x.left;
  345. t = x.right;
  346. x.right = x.left;
  347. x.left = t;
  348. }
  349. for (int i = 0; i < ctx.s1.length; i += 2) {
  350. blowfishEncrypt(x, ctx);
  351. ctx.s1[i ] = x.right;
  352. ctx.s1[i+1] = x.left;
  353. t = x.right;
  354. x.right = x.left;
  355. x.left = t;
  356. }
  357. for (int i = 0; i < ctx.s2.length; i += 2) {
  358. blowfishEncrypt(x, ctx);
  359. ctx.s2[i ] = x.right;
  360. ctx.s2[i+1] = x.left;
  361. t = x.right;
  362. x.right = x.left;
  363. x.left = t;
  364. }
  365. for (int i = 0; i < ctx.s3.length; i += 2) {
  366. blowfishEncrypt(x, ctx);
  367. ctx.s3[i ] = x.right;
  368. ctx.s3[i+1] = x.left;
  369. t = x.right;
  370. x.right = x.left;
  371. x.left = t;
  372. }
  373. x.left = x.right = 0;
  374. return ctx;
  375. }
  376. public
  377. void encrypt(byte[] in, int i, byte[] out, int o, Object k, int bs) {
  378. Block x = new Block();
  379. x.left = (in[i ] & 0xff) << 24 | (in[i+1] & 0xff) << 16 |
  380. (in[i+2] & 0xff) << 8 | (in[i+3] & 0xff);
  381. x.right = (in[i+4] & 0xff) << 24 | (in[i+5] & 0xff) << 16 |
  382. (in[i+6] & 0xff) << 8 | (in[i+7] & 0xff);
  383. blowfishEncrypt(x, (Context) k);
  384. out[o ] = (byte) (x.right >>> 24);
  385. out[o+1] = (byte) (x.right >>> 16);
  386. out[o+2] = (byte) (x.right >>> 8);
  387. out[o+3] = (byte) x.right;
  388. out[o+4] = (byte) (x.left >>> 24);
  389. out[o+5] = (byte) (x.left >>> 16);
  390. out[o+6] = (byte) (x.left >>> 8);
  391. out[o+7] = (byte) x.left;
  392. x.left = x.right = 0;
  393. }
  394. public
  395. void decrypt(byte[] in, int i, byte[] out, int o, Object k, int bs) {
  396. Block x = new Block();
  397. x.left = (in[i ] & 0xff) << 24 | (in[i+1] & 0xff) << 16 |
  398. (in[i+2] & 0xff) << 8 | (in[i+3] & 0xff);
  399. x.right = (in[i+4] & 0xff) << 24 | (in[i+5] & 0xff) << 16 |
  400. (in[i+6] & 0xff) << 8 | (in[i+7] & 0xff);
  401. blowfishDecrypt(x, (Context) k);
  402. out[o ] = (byte) (x.right >>> 24);
  403. out[o+1] = (byte) (x.right >>> 16);
  404. out[o+2] = (byte) (x.right >>> 8);
  405. out[o+3] = (byte) x.right;
  406. out[o+4] = (byte) (x.left >>> 24);
  407. out[o+5] = (byte) (x.left >>> 16);
  408. out[o+6] = (byte) (x.left >>> 8);
  409. out[o+7] = (byte) x.left;
  410. x.left = x.right = 0;
  411. }
  412. // Own methods
  413. // -----------------------------------------------------------------
  414. /** Encrypt a single pair of 32-bit integers. */
  415. private void blowfishEncrypt(Block x, Context ctx) {
  416. int[] p = ctx.p;
  417. int[] s0 = ctx.s0, s1 = ctx.s1, s2 = ctx.s2, s3 = ctx.s3;
  418. x.left ^= p[0];
  419. x.right ^= ((s0[x.left >>> 24] + s1[x.left >>> 16 & 0xff])
  420. ^ s2[x.left >>> 8 & 0xff]) + s3[x.left & 0xff] ^ p[1];
  421. x.left ^= ((s0[x.right >>> 24] + s1[x.right >>> 16 & 0xff])
  422. ^ s2[x.right >>> 8 & 0xff]) + s3[x.right & 0xff] ^ p[2];
  423. x.right ^= ((s0[x.left >>> 24] + s1[x.left >>> 16 & 0xff])
  424. ^ s2[x.left >>> 8 & 0xff]) + s3[x.left & 0xff] ^ p[3];
  425. x.left ^= ((s0[x.right >>> 24] + s1[x.right >>> 16 & 0xff])
  426. ^ s2[x.right >>> 8 & 0xff]) + s3[x.right & 0xff] ^ p[4];
  427. x.right ^= ((s0[x.left >>> 24] + s1[x.left >>> 16 & 0xff])
  428. ^ s2[x.left >>> 8 & 0xff]) + s3[x.left & 0xff] ^ p[5];
  429. x.left ^= ((s0[x.right >>> 24] + s1[x.right >>> 16 & 0xff])
  430. ^ s2[x.right >>> 8 & 0xff]) + s3[x.right & 0xff] ^ p[6];
  431. x.right ^= ((s0[x.left >>> 24] + s1[x.left >>> 16 & 0xff])
  432. ^ s2[x.left >>> 8 & 0xff]) + s3[x.left & 0xff] ^ p[7];
  433. x.left ^= ((s0[x.right >>> 24] + s1[x.right >>> 16 & 0xff])
  434. ^ s2[x.right >>> 8 & 0xff]) + s3[x.right & 0xff] ^ p[8];
  435. x.right ^= ((s0[x.left >>> 24] + s1[x.left >>> 16 & 0xff])
  436. ^ s2[x.left >>> 8 & 0xff]) + s3[x.left & 0xff] ^ p[9];
  437. x.left ^= ((s0[x.right >>> 24] + s1[x.right >>> 16 & 0xff])
  438. ^ s2[x.right >>> 8 & 0xff]) + s3[x.right & 0xff] ^ p[10];
  439. x.right ^= ((s0[x.left >>> 24] + s1[x.left >>> 16 & 0xff])
  440. ^ s2[x.left >>> 8 & 0xff]) + s3[x.left & 0xff] ^ p[11];
  441. x.left ^= ((s0[x.right >>> 24] + s1[x.right >>> 16 & 0xff])
  442. ^ s2[x.right >>> 8 & 0xff]) + s3[x.right & 0xff] ^ p[12];
  443. x.right ^= ((s0[x.left >>> 24] + s1[x.left >>> 16 & 0xff])
  444. ^ s2[x.left >>> 8 & 0xff]) + s3[x.left & 0xff] ^ p[13];
  445. x.left ^= ((s0[x.right >>> 24] + s1[x.right >>> 16 & 0xff])
  446. ^ s2[x.right >>> 8 & 0xff]) + s3[x.right & 0xff] ^ p[14];
  447. x.right ^= ((s0[x.left >>> 24] + s1[x.left >>> 16 & 0xff])
  448. ^ s2[x.left >>> 8 & 0xff]) + s3[x.left & 0xff] ^ p[15];
  449. x.left ^= ((s0[x.right >>> 24] + s1[x.right >>> 16 & 0xff])
  450. ^ s2[x.right >>> 8 & 0xff]) + s3[x.right & 0xff] ^ p[16];
  451. x.right ^= p[17];
  452. }
  453. /** Decrypt a single pair of 32-bit integers. */
  454. private void blowfishDecrypt(Block x, Context ctx) {
  455. int[] p = ctx.p;
  456. int[] s0 = ctx.s0, s1 = ctx.s1, s2 = ctx.s2, s3 = ctx.s3;
  457. x.left ^= p[17];
  458. x.right ^= ((s0[x.left >>> 24] + s1[x.left >>> 16 & 0xff])
  459. ^ s2[x.left >>> 8 & 0xff]) + s3[x.left & 0xff] ^ p[16];
  460. x.left ^= ((s0[x.right >>> 24] + s1[x.right >>> 16 & 0xff])
  461. ^ s2[x.right >>> 8 & 0xff]) + s3[x.right & 0xff] ^ p[15];
  462. x.right ^= ((s0[x.left >>> 24] + s1[x.left >>> 16 & 0xff])
  463. ^ s2[x.left >>> 8 & 0xff]) + s3[x.left & 0xff] ^ p[14];
  464. x.left ^= ((s0[x.right >>> 24] + s1[x.right >>> 16 & 0xff])
  465. ^ s2[x.right >>> 8 & 0xff]) + s3[x.right & 0xff] ^ p[13];
  466. x.right ^= ((s0[x.left >>> 24] + s1[x.left >>> 16 & 0xff])
  467. ^ s2[x.left >>> 8 & 0xff]) + s3[x.left & 0xff] ^ p[12];
  468. x.left ^= ((s0[x.right >>> 24] + s1[x.right >>> 16 & 0xff])
  469. ^ s2[x.right >>> 8 & 0xff]) + s3[x.right & 0xff] ^ p[11];
  470. x.right ^= ((s0[x.left >>> 24] + s1[x.left >>> 16 & 0xff])
  471. ^ s2[x.left >>> 8 & 0xff]) + s3[x.left & 0xff] ^ p[10];
  472. x.left ^= ((s0[x.right >>> 24] + s1[x.right >>> 16 & 0xff])
  473. ^ s2[x.right >>> 8 & 0xff]) + s3[x.right & 0xff] ^ p[9];
  474. x.right ^= ((s0[x.left >>> 24] + s1[x.left >>> 16 & 0xff])
  475. ^ s2[x.left >>> 8 & 0xff]) + s3[x.left & 0xff] ^ p[8];
  476. x.left ^= ((s0[x.right >>> 24] + s1[x.right >>> 16 & 0xff])
  477. ^ s2[x.right >>> 8 & 0xff]) + s3[x.right & 0xff] ^ p[7];
  478. x.right ^= ((s0[x.left >>> 24] + s1[x.left >>> 16 & 0xff])
  479. ^ s2[x.left >>> 8 & 0xff]) + s3[x.left & 0xff] ^ p[6];
  480. x.left ^= ((s0[x.right >>> 24] + s1[x.right >>> 16 & 0xff])
  481. ^ s2[x.right >>> 8 & 0xff]) + s3[x.right & 0xff] ^ p[5];
  482. x.right ^= ((s0[x.left >>> 24] + s1[x.left >>> 16 & 0xff])
  483. ^ s2[x.left >>> 8 & 0xff]) + s3[x.left & 0xff] ^ p[4];
  484. x.left ^= ((s0[x.right >>> 24] + s1[x.right >>> 16 & 0xff])
  485. ^ s2[x.right >>> 8 & 0xff]) + s3[x.right & 0xff] ^ p[3];
  486. x.right ^= ((s0[x.left >>> 24] + s1[x.left >>> 16 & 0xff])
  487. ^ s2[x.left >>> 8 & 0xff]) + s3[x.left & 0xff] ^ p[2];
  488. x.left ^= ((s0[x.right >>> 24] + s1[x.right >>> 16 & 0xff])
  489. ^ s2[x.right >>> 8 & 0xff]) + s3[x.right & 0xff] ^ p[1];
  490. x.right ^= p[0];
  491. }
  492. public boolean selfTest() {
  493. if (valid == null) {
  494. boolean result = super.selfTest(); // symmetry
  495. if (result) {
  496. result = testKat(TV_KEY, TV_CT);
  497. }
  498. valid = new Boolean(result);
  499. }
  500. return valid.booleanValue();
  501. }
  502. // Inner classes.
  503. // -----------------------------------------------------------------------
  504. /** A simple wrapper for the P- and S-boxes. */
  505. private class Context implements Cloneable {
  506. // Constants and variables.
  507. // --------------------------------------------------------------------
  508. /** The P-array. */
  509. int[] p, s0, s1, s2, s3;
  510. // Constructors.
  511. // --------------------------------------------------------------------
  512. /** Default 0-arguments constructor. */
  513. Context() {
  514. p = new int[18];
  515. s0 = new int[256];
  516. s1 = new int[256];
  517. s2 = new int[256];
  518. s3 = new int[256];
  519. }
  520. /**
  521. * Private constructor for cloneing.
  522. *
  523. * @param that The instance being cloned.
  524. */
  525. private Context(Context that) {
  526. this.p = (int[]) that.p.clone();
  527. this.s0 = (int[]) that.s0.clone();
  528. this.s1 = (int[]) that.s1.clone();
  529. this.s2 = (int[]) that.s2.clone();
  530. this.s3 = (int[]) that.s3.clone();
  531. }
  532. // Clonable interface implementation.
  533. // --------------------------------------------------------------------
  534. public Object clone() {
  535. return new Context(this);
  536. }
  537. }
  538. private class Block {
  539. int left, right;
  540. }
  541. }