linux/crypto/blowfish_common.c
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   1/*
   2 * Cryptographic API.
   3 *
   4 * Common Blowfish algorithm parts shared between the c and assembler
   5 * implementations.
   6 *
   7 * Blowfish Cipher Algorithm, by Bruce Schneier.
   8 * http://www.counterpane.com/blowfish.html
   9 *
  10 * Adapted from Kerneli implementation.
  11 *
  12 * Copyright (c) Herbert Valerio Riedel <hvr@hvrlab.org>
  13 * Copyright (c) Kyle McMartin <kyle@debian.org>
  14 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
  15 *
  16 * This program is free software; you can redistribute it and/or modify
  17 * it under the terms of the GNU General Public License as published by
  18 * the Free Software Foundation; either version 2 of the License, or
  19 * (at your option) any later version.
  20 *
  21 */
  22#include <linux/init.h>
  23#include <linux/module.h>
  24#include <linux/mm.h>
  25#include <asm/byteorder.h>
  26#include <linux/crypto.h>
  27#include <linux/types.h>
  28#include <crypto/blowfish.h>
  29
  30static const u32 bf_pbox[16 + 2] = {
  31        0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
  32        0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
  33        0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
  34        0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
  35        0x9216d5d9, 0x8979fb1b,
  36};
  37
  38static const u32 bf_sbox[256 * 4] = {
  39        0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7,
  40        0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
  41        0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
  42        0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
  43        0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee,
  44        0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
  45        0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef,
  46        0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
  47        0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
  48        0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
  49        0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce,
  50        0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
  51        0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e,
  52        0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
  53        0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
  54        0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
  55        0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88,
  56        0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
  57        0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e,
  58        0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
  59        0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
  60        0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
  61        0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88,
  62        0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
  63        0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6,
  64        0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
  65        0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
  66        0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
  67        0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba,
  68        0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
  69        0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f,
  70        0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
  71        0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
  72        0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
  73        0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279,
  74        0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
  75        0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab,
  76        0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
  77        0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
  78        0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
  79        0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0,
  80        0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
  81        0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790,
  82        0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
  83        0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
  84        0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
  85        0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7,
  86        0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
  87        0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad,
  88        0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
  89        0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
  90        0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
  91        0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477,
  92        0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
  93        0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49,
  94        0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
  95        0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
  96        0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
  97        0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41,
  98        0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
  99        0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400,
 100        0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
 101        0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
 102        0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a,
 103        0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623,
 104        0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266,
 105        0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
 106        0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e,
 107        0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6,
 108        0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
 109        0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e,
 110        0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1,
 111        0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
 112        0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
 113        0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff,
 114        0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
 115        0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701,
 116        0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7,
 117        0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
 118        0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331,
 119        0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf,
 120        0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
 121        0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e,
 122        0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
 123        0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
 124        0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2,
 125        0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16,
 126        0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
 127        0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b,
 128        0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509,
 129        0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
 130        0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3,
 131        0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f,
 132        0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
 133        0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4,
 134        0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960,
 135        0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
 136        0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28,
 137        0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802,
 138        0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
 139        0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510,
 140        0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf,
 141        0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
 142        0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
 143        0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50,
 144        0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
 145        0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8,
 146        0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281,
 147        0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
 148        0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696,
 149        0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128,
 150        0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
 151        0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0,
 152        0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
 153        0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
 154        0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250,
 155        0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3,
 156        0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
 157        0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00,
 158        0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061,
 159        0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
 160        0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e,
 161        0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735,
 162        0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
 163        0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9,
 164        0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340,
 165        0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
 166        0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7,
 167        0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934,
 168        0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
 169        0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af,
 170        0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840,
 171        0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45,
 172        0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
 173        0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a,
 174        0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
 175        0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee,
 176        0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
 177        0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42,
 178        0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
 179        0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2,
 180        0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
 181        0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
 182        0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b,
 183        0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33,
 184        0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
 185        0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3,
 186        0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
 187        0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17,
 188        0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564,
 189        0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b,
 190        0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
 191        0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922,
 192        0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
 193        0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0,
 194        0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e,
 195        0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37,
 196        0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
 197        0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804,
 198        0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
 199        0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3,
 200        0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb,
 201        0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d,
 202        0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
 203        0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350,
 204        0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
 205        0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a,
 206        0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
 207        0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d,
 208        0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
 209        0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f,
 210        0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
 211        0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
 212        0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9,
 213        0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2,
 214        0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
 215        0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e,
 216        0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
 217        0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10,
 218        0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169,
 219        0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52,
 220        0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
 221        0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5,
 222        0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
 223        0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634,
 224        0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76,
 225        0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24,
 226        0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
 227        0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4,
 228        0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
 229        0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837,
 230        0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0,
 231        0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b,
 232        0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe,
 233        0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
 234        0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
 235        0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8,
 236        0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
 237        0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304,
 238        0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22,
 239        0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
 240        0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
 241        0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9,
 242        0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
 243        0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593,
 244        0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51,
 245        0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
 246        0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
 247        0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b,
 248        0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
 249        0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c,
 250        0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
 251        0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
 252        0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
 253        0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb,
 254        0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
 255        0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991,
 256        0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32,
 257        0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
 258        0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
 259        0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae,
 260        0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
 261        0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5,
 262        0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47,
 263        0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
 264        0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
 265        0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84,
 266        0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
 267        0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8,
 268        0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd,
 269        0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
 270        0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
 271        0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38,
 272        0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
 273        0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c,
 274        0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525,
 275        0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
 276        0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
 277        0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964,
 278        0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
 279        0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8,
 280        0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
 281        0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
 282        0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
 283        0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02,
 284        0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
 285        0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614,
 286        0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a,
 287        0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
 288        0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
 289        0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0,
 290        0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
 291        0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e,
 292        0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9,
 293        0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
 294        0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6,
 295};
 296
 297/*
 298 * Round loop unrolling macros, S is a pointer to a S-Box array
 299 * organized in 4 unsigned longs at a row.
 300 */
 301#define GET32_3(x) (((x) & 0xff))
 302#define GET32_2(x) (((x) >> (8)) & (0xff))
 303#define GET32_1(x) (((x) >> (16)) & (0xff))
 304#define GET32_0(x) (((x) >> (24)) & (0xff))
 305
 306#define bf_F(x) (((S[GET32_0(x)] + S[256 + GET32_1(x)]) ^ \
 307                S[512 + GET32_2(x)]) + S[768 + GET32_3(x)])
 308
 309#define ROUND(a, b, n) ({ b ^= P[n]; a ^= bf_F(b); })
 310
 311/*
 312 * The blowfish encipher, processes 64-bit blocks.
 313 * NOTE: This function MUSTN'T respect endianess
 314 */
 315static void encrypt_block(struct bf_ctx *bctx, u32 *dst, u32 *src)
 316{
 317        const u32 *P = bctx->p;
 318        const u32 *S = bctx->s;
 319        u32 yl = src[0];
 320        u32 yr = src[1];
 321
 322        ROUND(yr, yl, 0);
 323        ROUND(yl, yr, 1);
 324        ROUND(yr, yl, 2);
 325        ROUND(yl, yr, 3);
 326        ROUND(yr, yl, 4);
 327        ROUND(yl, yr, 5);
 328        ROUND(yr, yl, 6);
 329        ROUND(yl, yr, 7);
 330        ROUND(yr, yl, 8);
 331        ROUND(yl, yr, 9);
 332        ROUND(yr, yl, 10);
 333        ROUND(yl, yr, 11);
 334        ROUND(yr, yl, 12);
 335        ROUND(yl, yr, 13);
 336        ROUND(yr, yl, 14);
 337        ROUND(yl, yr, 15);
 338
 339        yl ^= P[16];
 340        yr ^= P[17];
 341
 342        dst[0] = yr;
 343        dst[1] = yl;
 344}
 345
 346/*
 347 * Calculates the blowfish S and P boxes for encryption and decryption.
 348 */
 349int blowfish_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen)
 350{
 351        struct bf_ctx *ctx = crypto_tfm_ctx(tfm);
 352        u32 *P = ctx->p;
 353        u32 *S = ctx->s;
 354        short i, j, count;
 355        u32 data[2], temp;
 356
 357        /* Copy the initialization s-boxes */
 358        for (i = 0, count = 0; i < 256; i++)
 359                for (j = 0; j < 4; j++, count++)
 360                        S[count] = bf_sbox[count];
 361
 362        /* Set the p-boxes */
 363        for (i = 0; i < 16 + 2; i++)
 364                P[i] = bf_pbox[i];
 365
 366        /* Actual subkey generation */
 367        for (j = 0, i = 0; i < 16 + 2; i++) {
 368                temp = (((u32)key[j] << 24) |
 369                        ((u32)key[(j + 1) % keylen] << 16) |
 370                        ((u32)key[(j + 2) % keylen] << 8) |
 371                        ((u32)key[(j + 3) % keylen]));
 372
 373                P[i] = P[i] ^ temp;
 374                j = (j + 4) % keylen;
 375        }
 376
 377        data[0] = 0x00000000;
 378        data[1] = 0x00000000;
 379
 380        for (i = 0; i < 16 + 2; i += 2) {
 381                encrypt_block((struct bf_ctx *)ctx, data, data);
 382
 383                P[i] = data[0];
 384                P[i + 1] = data[1];
 385        }
 386
 387        for (i = 0; i < 4; i++) {
 388                for (j = 0, count = i * 256; j < 256; j += 2, count += 2) {
 389                        encrypt_block((struct bf_ctx *)ctx, data, data);
 390
 391                        S[count] = data[0];
 392                        S[count + 1] = data[1];
 393                }
 394        }
 395
 396        /* Bruce says not to bother with the weak key check. */
 397        return 0;
 398}
 399EXPORT_SYMBOL_GPL(blowfish_setkey);
 400
 401MODULE_LICENSE("GPL");
 402MODULE_DESCRIPTION("Blowfish Cipher common functions");
 403
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