blob: abc0e03d4d25574d29c88f42441a2951463956c8
| 1 | /* |
| 2 | * Blowfish algorithm |
| 3 | * Copyright (c) 2012 Samuel Pitoiset |
| 4 | * |
| 5 | * loosely based on Paul Kocher's implementation |
| 6 | * |
| 7 | * This file is part of FFmpeg. |
| 8 | * |
| 9 | * FFmpeg is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU Lesser General Public |
| 11 | * License as published by the Free Software Foundation; either |
| 12 | * version 2.1 of the License, or (at your option) any later version. |
| 13 | * |
| 14 | * FFmpeg is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * Lesser General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU Lesser General Public |
| 20 | * License along with FFmpeg; if not, write to the Free Software |
| 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 22 | */ |
| 23 | |
| 24 | #include "avutil.h" |
| 25 | #include "common.h" |
| 26 | #include "intreadwrite.h" |
| 27 | #include "mem.h" |
| 28 | #include "blowfish.h" |
| 29 | |
| 30 | static const uint32_t orig_p[AV_BF_ROUNDS + 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 | |
| 38 | static const uint32_t orig_s[4][256] = { |
| 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 | #define F(Xl, Xr, P) \ |
| 298 | Xr ^=((( ctx->s[0][ Xl >> 24 ] \ |
| 299 | + ctx->s[1][(Xl >> 16) & 0xFF])\ |
| 300 | ^ ctx->s[2][(Xl >> 8) & 0xFF])\ |
| 301 | + ctx->s[3][ Xl & 0xFF])\ |
| 302 | ^ P; |
| 303 | |
| 304 | AVBlowfish *av_blowfish_alloc(void) |
| 305 | { |
| 306 | return av_mallocz(sizeof(struct AVBlowfish)); |
| 307 | } |
| 308 | |
| 309 | av_cold void av_blowfish_init(AVBlowfish *ctx, const uint8_t *key, int key_len) |
| 310 | { |
| 311 | uint32_t data, data_l, data_r; |
| 312 | int i, j, k; |
| 313 | |
| 314 | memcpy(ctx->s, orig_s, sizeof(orig_s)); |
| 315 | |
| 316 | j = 0; |
| 317 | for (i = 0; i < AV_BF_ROUNDS + 2; ++i) { |
| 318 | data = 0; |
| 319 | for (k = 0; k < 4; k++) { |
| 320 | data = (data << 8) | key[j]; |
| 321 | if (++j >= key_len) |
| 322 | j = 0; |
| 323 | } |
| 324 | ctx->p[i] = orig_p[i] ^ data; |
| 325 | } |
| 326 | |
| 327 | data_l = data_r = 0; |
| 328 | |
| 329 | for (i = 0; i < AV_BF_ROUNDS + 2; i += 2) { |
| 330 | av_blowfish_crypt_ecb(ctx, &data_l, &data_r, 0); |
| 331 | ctx->p[i] = data_l; |
| 332 | ctx->p[i + 1] = data_r; |
| 333 | } |
| 334 | |
| 335 | for (i = 0; i < 4; ++i) { |
| 336 | for (j = 0; j < 256; j += 2) { |
| 337 | av_blowfish_crypt_ecb(ctx, &data_l, &data_r, 0); |
| 338 | ctx->s[i][j] = data_l; |
| 339 | ctx->s[i][j + 1] = data_r; |
| 340 | } |
| 341 | } |
| 342 | } |
| 343 | |
| 344 | void av_blowfish_crypt_ecb(AVBlowfish *ctx, uint32_t *xl, uint32_t *xr, |
| 345 | int decrypt) |
| 346 | { |
| 347 | uint32_t Xl, Xr; |
| 348 | int i; |
| 349 | |
| 350 | Xl = *xl; |
| 351 | Xr = *xr; |
| 352 | |
| 353 | if (decrypt) { |
| 354 | Xl ^= ctx->p[AV_BF_ROUNDS + 1]; |
| 355 | for (i = AV_BF_ROUNDS; i > 0; i-=2) { |
| 356 | F(Xl, Xr, ctx->p[i ]); |
| 357 | F(Xr, Xl, ctx->p[i-1]); |
| 358 | } |
| 359 | |
| 360 | Xr ^= ctx->p[0]; |
| 361 | } else { |
| 362 | Xl ^= ctx->p[0]; |
| 363 | for (i = 1; i < AV_BF_ROUNDS+1; i+=2){ |
| 364 | F(Xl, Xr, ctx->p[i ]); |
| 365 | F(Xr, Xl, ctx->p[i+1]); |
| 366 | } |
| 367 | |
| 368 | Xr ^= ctx->p[AV_BF_ROUNDS + 1]; |
| 369 | } |
| 370 | |
| 371 | *xl = Xr; |
| 372 | *xr = Xl; |
| 373 | } |
| 374 | |
| 375 | void av_blowfish_crypt(AVBlowfish *ctx, uint8_t *dst, const uint8_t *src, |
| 376 | int count, uint8_t *iv, int decrypt) |
| 377 | { |
| 378 | uint32_t v0, v1; |
| 379 | int i; |
| 380 | |
| 381 | if (decrypt) { |
| 382 | while (count--) { |
| 383 | v0 = AV_RB32(src); |
| 384 | v1 = AV_RB32(src + 4); |
| 385 | |
| 386 | av_blowfish_crypt_ecb(ctx, &v0, &v1, decrypt); |
| 387 | |
| 388 | if (iv) { |
| 389 | v0 ^= AV_RB32(iv); |
| 390 | v1 ^= AV_RB32(iv + 4); |
| 391 | memcpy(iv, src, 8); |
| 392 | } |
| 393 | |
| 394 | AV_WB32(dst, v0); |
| 395 | AV_WB32(dst + 4, v1); |
| 396 | |
| 397 | src += 8; |
| 398 | dst += 8; |
| 399 | } |
| 400 | } else { |
| 401 | while (count--) { |
| 402 | if (iv) { |
| 403 | for (i = 0; i < 8; i++) |
| 404 | dst[i] = src[i] ^ iv[i]; |
| 405 | v0 = AV_RB32(dst); |
| 406 | v1 = AV_RB32(dst + 4); |
| 407 | } else { |
| 408 | v0 = AV_RB32(src); |
| 409 | v1 = AV_RB32(src + 4); |
| 410 | } |
| 411 | |
| 412 | av_blowfish_crypt_ecb(ctx, &v0, &v1, decrypt); |
| 413 | |
| 414 | AV_WB32(dst, v0); |
| 415 | AV_WB32(dst + 4, v1); |
| 416 | |
| 417 | if (iv) |
| 418 | memcpy(iv, dst, 8); |
| 419 | |
| 420 | src += 8; |
| 421 | dst += 8; |
| 422 | } |
| 423 | } |
| 424 | } |
| 425 |