blowfish_common.c (15911B)
1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Cryptographic API. 4 * 5 * Common Blowfish algorithm parts shared between the c and assembler 6 * implementations. 7 * 8 * Blowfish Cipher Algorithm, by Bruce Schneier. 9 * http://www.counterpane.com/blowfish.html 10 * 11 * Adapted from Kerneli implementation. 12 * 13 * Copyright (c) Herbert Valerio Riedel <hvr@hvrlab.org> 14 * Copyright (c) Kyle McMartin <kyle@debian.org> 15 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> 16 */ 17#include <linux/init.h> 18#include <linux/module.h> 19#include <linux/mm.h> 20#include <asm/byteorder.h> 21#include <linux/crypto.h> 22#include <linux/types.h> 23#include <crypto/blowfish.h> 24 25static const u32 bf_pbox[16 + 2] = { 26 0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344, 27 0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89, 28 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c, 29 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917, 30 0x9216d5d9, 0x8979fb1b, 31}; 32 33static const u32 bf_sbox[256 * 4] = { 34 0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 35 0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99, 36 0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16, 37 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e, 38 0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee, 39 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013, 40 0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef, 41 0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e, 42 0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60, 43 0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440, 44 0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce, 45 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a, 46 0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e, 47 0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677, 48 0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193, 49 0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032, 50 0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88, 51 0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239, 52 0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e, 53 0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0, 54 0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3, 55 0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98, 56 0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88, 57 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe, 58 0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6, 59 0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d, 60 0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b, 61 0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7, 62 0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba, 63 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463, 64 0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f, 65 0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09, 66 0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3, 67 0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb, 68 0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279, 69 0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8, 70 0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab, 71 0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82, 72 0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db, 73 0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573, 74 0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0, 75 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b, 76 0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790, 77 0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8, 78 0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4, 79 0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0, 80 0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7, 81 0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c, 82 0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad, 83 0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1, 84 0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299, 85 0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9, 86 0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477, 87 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf, 88 0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49, 89 0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af, 90 0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa, 91 0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5, 92 0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41, 93 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915, 94 0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400, 95 0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915, 96 0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664, 97 0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a, 98 0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623, 99 0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266, 100 0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1, 101 0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e, 102 0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6, 103 0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1, 104 0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e, 105 0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1, 106 0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737, 107 0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8, 108 0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff, 109 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd, 110 0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701, 111 0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7, 112 0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41, 113 0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331, 114 0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf, 115 0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af, 116 0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e, 117 0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87, 118 0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c, 119 0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2, 120 0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16, 121 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd, 122 0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b, 123 0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509, 124 0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e, 125 0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3, 126 0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f, 127 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a, 128 0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4, 129 0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960, 130 0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66, 131 0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28, 132 0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802, 133 0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84, 134 0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510, 135 0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf, 136 0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14, 137 0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e, 138 0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50, 139 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7, 140 0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8, 141 0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281, 142 0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99, 143 0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696, 144 0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128, 145 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73, 146 0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0, 147 0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0, 148 0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105, 149 0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250, 150 0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3, 151 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285, 152 0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00, 153 0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061, 154 0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb, 155 0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e, 156 0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735, 157 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc, 158 0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9, 159 0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340, 160 0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20, 161 0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7, 162 0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934, 163 0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068, 164 0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af, 165 0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840, 166 0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45, 167 0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504, 168 0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a, 169 0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb, 170 0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee, 171 0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6, 172 0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42, 173 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b, 174 0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2, 175 0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb, 176 0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527, 177 0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b, 178 0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33, 179 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c, 180 0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3, 181 0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc, 182 0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17, 183 0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564, 184 0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b, 185 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115, 186 0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922, 187 0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728, 188 0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0, 189 0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e, 190 0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37, 191 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d, 192 0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804, 193 0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b, 194 0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3, 195 0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb, 196 0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d, 197 0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c, 198 0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350, 199 0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9, 200 0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a, 201 0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe, 202 0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d, 203 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc, 204 0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f, 205 0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61, 206 0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2, 207 0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9, 208 0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2, 209 0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c, 210 0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e, 211 0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633, 212 0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10, 213 0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169, 214 0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52, 215 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027, 216 0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5, 217 0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62, 218 0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634, 219 0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76, 220 0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24, 221 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc, 222 0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4, 223 0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c, 224 0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837, 225 0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0, 226 0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b, 227 0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe, 228 0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b, 229 0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4, 230 0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8, 231 0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6, 232 0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304, 233 0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22, 234 0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4, 235 0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6, 236 0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9, 237 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59, 238 0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593, 239 0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51, 240 0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28, 241 0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c, 242 0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b, 243 0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28, 244 0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c, 245 0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd, 246 0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a, 247 0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319, 248 0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb, 249 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f, 250 0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991, 251 0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32, 252 0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680, 253 0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166, 254 0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae, 255 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb, 256 0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5, 257 0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47, 258 0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370, 259 0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d, 260 0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84, 261 0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048, 262 0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8, 263 0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd, 264 0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9, 265 0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7, 266 0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38, 267 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f, 268 0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c, 269 0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525, 270 0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1, 271 0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442, 272 0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964, 273 0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e, 274 0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8, 275 0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d, 276 0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f, 277 0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299, 278 0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02, 279 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc, 280 0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614, 281 0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a, 282 0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6, 283 0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b, 284 0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0, 285 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060, 286 0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e, 287 0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9, 288 0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f, 289 0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6, 290}; 291 292/* 293 * Round loop unrolling macros, S is a pointer to a S-Box array 294 * organized in 4 unsigned longs at a row. 295 */ 296#define GET32_3(x) (((x) & 0xff)) 297#define GET32_2(x) (((x) >> (8)) & (0xff)) 298#define GET32_1(x) (((x) >> (16)) & (0xff)) 299#define GET32_0(x) (((x) >> (24)) & (0xff)) 300 301#define bf_F(x) (((S[GET32_0(x)] + S[256 + GET32_1(x)]) ^ \ 302 S[512 + GET32_2(x)]) + S[768 + GET32_3(x)]) 303 304#define ROUND(a, b, n) ({ b ^= P[n]; a ^= bf_F(b); }) 305 306/* 307 * The blowfish encipher, processes 64-bit blocks. 308 * NOTE: This function MUSTN'T respect endianess 309 */ 310static void encrypt_block(struct bf_ctx *bctx, u32 *dst, u32 *src) 311{ 312 const u32 *P = bctx->p; 313 const u32 *S = bctx->s; 314 u32 yl = src[0]; 315 u32 yr = src[1]; 316 317 ROUND(yr, yl, 0); 318 ROUND(yl, yr, 1); 319 ROUND(yr, yl, 2); 320 ROUND(yl, yr, 3); 321 ROUND(yr, yl, 4); 322 ROUND(yl, yr, 5); 323 ROUND(yr, yl, 6); 324 ROUND(yl, yr, 7); 325 ROUND(yr, yl, 8); 326 ROUND(yl, yr, 9); 327 ROUND(yr, yl, 10); 328 ROUND(yl, yr, 11); 329 ROUND(yr, yl, 12); 330 ROUND(yl, yr, 13); 331 ROUND(yr, yl, 14); 332 ROUND(yl, yr, 15); 333 334 yl ^= P[16]; 335 yr ^= P[17]; 336 337 dst[0] = yr; 338 dst[1] = yl; 339} 340 341/* 342 * Calculates the blowfish S and P boxes for encryption and decryption. 343 */ 344int blowfish_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen) 345{ 346 struct bf_ctx *ctx = crypto_tfm_ctx(tfm); 347 u32 *P = ctx->p; 348 u32 *S = ctx->s; 349 short i, j, count; 350 u32 data[2], temp; 351 352 /* Copy the initialization s-boxes */ 353 for (i = 0, count = 0; i < 256; i++) 354 for (j = 0; j < 4; j++, count++) 355 S[count] = bf_sbox[count]; 356 357 /* Set the p-boxes */ 358 for (i = 0; i < 16 + 2; i++) 359 P[i] = bf_pbox[i]; 360 361 /* Actual subkey generation */ 362 for (j = 0, i = 0; i < 16 + 2; i++) { 363 temp = (((u32)key[j] << 24) | 364 ((u32)key[(j + 1) % keylen] << 16) | 365 ((u32)key[(j + 2) % keylen] << 8) | 366 ((u32)key[(j + 3) % keylen])); 367 368 P[i] = P[i] ^ temp; 369 j = (j + 4) % keylen; 370 } 371 372 data[0] = 0x00000000; 373 data[1] = 0x00000000; 374 375 for (i = 0; i < 16 + 2; i += 2) { 376 encrypt_block((struct bf_ctx *)ctx, data, data); 377 378 P[i] = data[0]; 379 P[i + 1] = data[1]; 380 } 381 382 for (i = 0; i < 4; i++) { 383 for (j = 0, count = i * 256; j < 256; j += 2, count += 2) { 384 encrypt_block((struct bf_ctx *)ctx, data, data); 385 386 S[count] = data[0]; 387 S[count + 1] = data[1]; 388 } 389 } 390 391 /* Bruce says not to bother with the weak key check. */ 392 return 0; 393} 394EXPORT_SYMBOL_GPL(blowfish_setkey); 395 396MODULE_LICENSE("GPL"); 397MODULE_DESCRIPTION("Blowfish Cipher common functions");