| 1 | /* -*-c-*- |
| 2 | * |
| 3 | * Bitslice S-box implementations |
| 4 | * |
| 5 | * (c) 2000 Straylight/Edgeware |
| 6 | */ |
| 7 | |
| 8 | /*----- Licensing notice --------------------------------------------------* |
| 9 | * |
| 10 | * This file is part of Catacomb. |
| 11 | * |
| 12 | * Catacomb is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU Library General Public License as |
| 14 | * published by the Free Software Foundation; either version 2 of the |
| 15 | * License, or (at your option) any later version. |
| 16 | * |
| 17 | * Catacomb is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU Library General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU Library General Public |
| 23 | * License along with Catacomb; if not, write to the Free |
| 24 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
| 25 | * MA 02111-1307, USA. |
| 26 | */ |
| 27 | |
| 28 | /*----- Credit where it's due ---------------------------------------------* |
| 29 | * |
| 30 | * These S-box expressions are taken from the paper `Speeding up Serpent', by |
| 31 | * Dag Arne Osvik, submitted to AES3. |
| 32 | */ |
| 33 | |
| 34 | #ifndef CATACOMB_SERPENT_SBOX_H |
| 35 | #define CATACOMB_SERPENT_SBOX_H |
| 36 | |
| 37 | #ifdef __cplusplus |
| 38 | extern "C" { |
| 39 | #endif |
| 40 | |
| 41 | /*----- Header files ------------------------------------------------------*/ |
| 42 | |
| 43 | #include <mLib/bits.h> |
| 44 | |
| 45 | /*----- Macros provided ---------------------------------------------------*/ |
| 46 | |
| 47 | /* --- @S0@ --- */ |
| 48 | |
| 49 | #define S0(r0, r1, r2, r3) do { \ |
| 50 | uint32 r4; \ |
| 51 | r3 ^= r0; r4 = r1; r1 &= r3; r4 ^= r2; \ |
| 52 | r1 ^= r0; r0 |= r3; r0 ^= r4; r4 ^= r3; \ |
| 53 | r3 ^= r2; r2 |= r1; r2 ^= r4; r4 = ~r4; \ |
| 54 | r4 |= r1; r1 ^= r3; r1 ^= r4; r3 |= r0; \ |
| 55 | r1 ^= r3; r4 ^= r3; \ |
| 56 | r3 = r0; r0 = r1; r1 = r4; \ |
| 57 | } while (0) |
| 58 | |
| 59 | #define IS0(r0, r1, r2, r3) do { \ |
| 60 | uint32 r4; \ |
| 61 | r2 = ~r2; r4 = r1; r1 |= r0; r4 = ~r4; \ |
| 62 | r1 ^= r2; r2 |= r4; r1 ^= r3; r0 ^= r4; \ |
| 63 | r2 ^= r0; r0 &= r3; r4 ^= r0; r0 |= r1; \ |
| 64 | r0 ^= r2; r3 ^= r4; r2 ^= r1; r3 ^= r0; \ |
| 65 | r3 ^= r1; r2 &= r3; r4 ^= r2; \ |
| 66 | r2 = r1; r1 = r4; \ |
| 67 | } while (0) |
| 68 | |
| 69 | /* --- @S1@ --- */ |
| 70 | |
| 71 | #define S1(r0, r1, r2, r3) do { \ |
| 72 | uint32 r4; \ |
| 73 | r0 = ~r0; r2 = ~r2; r4 = r0; r0 &= r1; \ |
| 74 | r2 ^= r0; r0 |= r3; r3 ^= r2; r1 ^= r0; \ |
| 75 | r0 ^= r4; r4 |= r1; r1 ^= r3; r2 |= r0; \ |
| 76 | r2 &= r4; r0 ^= r1; r1 &= r2; r1 ^= r0; \ |
| 77 | r0 &= r2; r0 ^= r4; \ |
| 78 | r4 = r0; r0 = r2; r2 = r3; r3 = r1; r1 = r4; \ |
| 79 | } while (0) |
| 80 | |
| 81 | #define IS1(r0, r1, r2, r3) do { \ |
| 82 | uint32 r4; \ |
| 83 | r4 = r1; r1 ^= r3; r3 &= r1; r4 ^= r2; \ |
| 84 | r3 ^= r0; r0 |= r1; r2 ^= r3; r0 ^= r4; \ |
| 85 | r0 |= r2; r1 ^= r3; r0 ^= r1; r1 |= r3; \ |
| 86 | r1 ^= r0; r4 = ~r4; r4 ^= r1; r1 |= r0; \ |
| 87 | r1 ^= r0; r1 |= r4; r3 ^= r1; \ |
| 88 | r1 = r0; r0 = r4; r4 = r2; r2 = r3; r3 = r4; \ |
| 89 | } while (0) |
| 90 | |
| 91 | /* --- @S2@ --- */ |
| 92 | |
| 93 | #define S2(r0, r1, r2, r3) do { \ |
| 94 | uint32 r4; \ |
| 95 | r4 = r0; r0 &= r2; r0 ^= r3; r2 ^= r1; \ |
| 96 | r2 ^= r0; r3 |= r4; r3 ^= r1; r4 ^= r2; \ |
| 97 | r1 = r3; r3 |= r4; r3 ^= r0; r0 &= r1; \ |
| 98 | r4 ^= r0; r1 ^= r3; r1 ^= r4; r4 = ~r4; \ |
| 99 | r0 = r2; r2 = r1; r1 = r3; r3 = r4; \ |
| 100 | } while (0) |
| 101 | |
| 102 | #define IS2(r0, r1, r2, r3) do { \ |
| 103 | uint32 r4; \ |
| 104 | r2 ^= r3; r3 ^= r0; r4 = r3; r3 &= r2; \ |
| 105 | r3 ^= r1; r1 |= r2; r1 ^= r4; r4 &= r3; \ |
| 106 | r2 ^= r3; r4 &= r0; r4 ^= r2; r2 &= r1; \ |
| 107 | r2 |= r0; r3 = ~r3; r2 ^= r3; r0 ^= r3; \ |
| 108 | r0 &= r1; r3 ^= r4; r3 ^= r0; \ |
| 109 | r0 = r1; r1 = r4; \ |
| 110 | } while (0) |
| 111 | |
| 112 | /* --- @S3@ --- */ |
| 113 | |
| 114 | #define S3(r0, r1, r2, r3) do { \ |
| 115 | uint32 r4; \ |
| 116 | r4 = r0; r0 |= r3; r3 ^= r1; r1 &= r4; \ |
| 117 | r4 ^= r2; r2 ^= r3; r3 &= r0; r4 |= r1; \ |
| 118 | r3 ^= r4; r0 ^= r1; r4 &= r0; r1 ^= r3; \ |
| 119 | r4 ^= r2; r1 |= r0; r1 ^= r2; r0 ^= r3; \ |
| 120 | r2 = r1; r1 |= r3; r1 ^= r0; \ |
| 121 | r0 = r1; r1 = r2; r2 = r3; r3 = r4; \ |
| 122 | } while (0) |
| 123 | |
| 124 | #define IS3(r0, r1, r2, r3) do { \ |
| 125 | uint32 r4; \ |
| 126 | r4 = r2; r2 ^= r1; r0 ^= r2; r4 &= r2; \ |
| 127 | r4 ^= r0; r0 &= r1; r1 ^= r3; r3 |= r4; \ |
| 128 | r2 ^= r3; r0 ^= r3; r1 ^= r4; r3 &= r2; \ |
| 129 | r3 ^= r1; r1 ^= r0; r1 |= r2; r0 ^= r3; \ |
| 130 | r1 ^= r4; r0 ^= r1; \ |
| 131 | r4 = r0; r0 = r2; r2 = r3; r3 = r4; \ |
| 132 | } while (0) |
| 133 | |
| 134 | /* --- @S4@ --- */ |
| 135 | |
| 136 | #define S4(r0, r1, r2, r3) do { \ |
| 137 | uint32 r4; \ |
| 138 | r1 ^= r3; r3 = ~r3; r2 ^= r3; r3 ^= r0; \ |
| 139 | r4 = r1; r1 &= r3; r1 ^= r2; r4 ^= r3; \ |
| 140 | r0 ^= r4; r2 &= r4; r2 ^= r0; r0 &= r1; \ |
| 141 | r3 ^= r0; r4 |= r1; r4 ^= r0; r0 |= r3; \ |
| 142 | r0 ^= r2; r2 &= r3; r0 = ~r0; r4 ^= r2; \ |
| 143 | r2 = r0; r0 = r1; r1 = r4; \ |
| 144 | } while (0) |
| 145 | |
| 146 | #define IS4(r0, r1, r2, r3) do { \ |
| 147 | uint32 r4; \ |
| 148 | r4 = r2; r2 &= r3; r2 ^= r1; r1 |= r3; \ |
| 149 | r1 &= r0; r4 ^= r2; r4 ^= r1; r1 &= r2; \ |
| 150 | r0 = ~r0; r3 ^= r4; r1 ^= r3; r3 &= r0; \ |
| 151 | r3 ^= r2; r0 ^= r1; r2 &= r0; r3 ^= r0; \ |
| 152 | r2 ^= r4, r2 |= r3; r3 ^= r0; r2 ^= r1; \ |
| 153 | r1 = r3; r3 = r4; \ |
| 154 | } while (0) |
| 155 | |
| 156 | /* --- @S5@ --- */ |
| 157 | |
| 158 | #define S5(r0, r1, r2, r3) do { \ |
| 159 | uint32 r4; \ |
| 160 | r0 ^= r1; r1 ^= r3; r3 = ~r3; r4 = r1; \ |
| 161 | r1 &= r0; r2 ^= r3; r1 ^= r2; r2 |= r4; \ |
| 162 | r4 ^= r3; r3 &= r1; r3 ^= r0; r4 ^= r1; \ |
| 163 | r4 ^= r2; r2 ^= r0; r0 &= r3; r2 = ~r2; \ |
| 164 | r0 ^= r4; r4 |= r3; r2 ^= r4; \ |
| 165 | r4 = r3; r3 = r2; r2 = r0; r0 = r1; r1 = r4; \ |
| 166 | } while (0) |
| 167 | |
| 168 | #define IS5(r0, r1, r2, r3) do { \ |
| 169 | uint32 r4; \ |
| 170 | r1 = ~r1; r4 = r3; r2 ^= r1; r3 |= r0; \ |
| 171 | r3 ^= r2; r2 |= r1; r2 &= r0; r4 ^= r3; \ |
| 172 | r2 ^= r4; r4 |= r0; r4 ^= r1; r1 &= r2; \ |
| 173 | r1 ^= r3; r4 ^= r2; r3 &= r4; r4 ^= r1; \ |
| 174 | r3 ^= r4; r4 = ~r4; r3 ^= r0; \ |
| 175 | r0 = r1; r1 = r4; r4 = r3; r3 = r2; r2 = r4; \ |
| 176 | } while (0) |
| 177 | |
| 178 | /* --- @S6@ --- */ |
| 179 | |
| 180 | #define S6(r0, r1, r2, r3) do { \ |
| 181 | uint32 r4; \ |
| 182 | r2 = ~r2; r4 = r3; r3 &= r0; r0 ^= r4; \ |
| 183 | r3 ^= r2; r2 |= r4; r1 ^= r3; r2 ^= r0; \ |
| 184 | r0 |= r1; r2 ^= r1; r4 ^= r0; r0 |= r3; \ |
| 185 | r0 ^= r2; r4 ^= r3; r4 ^= r0; r3 = ~r3; \ |
| 186 | r2 &= r4; r2 ^= r3; \ |
| 187 | r3 = r2; r2 = r4; \ |
| 188 | } while (0) |
| 189 | |
| 190 | #define IS6(r0, r1, r2, r3) do { \ |
| 191 | uint32 r4; \ |
| 192 | r0 ^= r2; r4 = r2; r2 &= r0; r4 ^= r3; \ |
| 193 | r2 = ~r2; r3 ^= r1; r2 ^= r3; r4 |= r0; \ |
| 194 | r0 ^= r2; r3 ^= r4; r4 ^= r1; r1 &= r3; \ |
| 195 | r1 ^= r0; r0 ^= r3; r0 |= r2; r3 ^= r1; \ |
| 196 | r4 ^= r0; \ |
| 197 | r0 = r1; r1 = r2; r2 = r4; \ |
| 198 | } while (0) |
| 199 | |
| 200 | /* --- @S7@ --- */ |
| 201 | |
| 202 | #define S7(r0, r1, r2, r3) do { \ |
| 203 | uint32 r4; \ |
| 204 | r4 = r1; r1 |= r2; r1 ^= r3; r4 ^= r2; \ |
| 205 | r2 ^= r1; r3 |= r4; r3 &= r0; r4 ^= r2; \ |
| 206 | r3 ^= r1; r1 |= r4; r1 ^= r0; r0 |= r4; \ |
| 207 | r0 ^= r2; r1 ^= r4; r2 ^= r1; r1 &= r0; \ |
| 208 | r1 ^= r4; r2 = ~r2; r2 |= r0; r4 ^= r2; \ |
| 209 | r2 = r1; r1 = r3; r3 = r0; r0 = r4; \ |
| 210 | } while (0) |
| 211 | |
| 212 | #define IS7(r0, r1, r2, r3) do { \ |
| 213 | uint32 r4; \ |
| 214 | r4 = r2; r2 ^= r0; r0 &= r3; r4 |= r3; \ |
| 215 | r2 = ~r2; r3 ^= r1; r1 |= r0; r0 ^= r2; \ |
| 216 | r2 &= r4; r3 &= r4; r1 ^= r2; r2 ^= r0; \ |
| 217 | r0 |= r2; r4 ^= r1; r0 ^= r3; r3 ^= r4; \ |
| 218 | r4 |= r0; r3 ^= r2; r4 ^= r2; \ |
| 219 | r2 = r1; r1 = r0; r0 = r3; r3 = r4; \ |
| 220 | } while (0) |
| 221 | |
| 222 | /*----- That's all, folks -------------------------------------------------*/ |
| 223 | |
| 224 | #ifdef __cplusplus |
| 225 | } |
| 226 | #endif |
| 227 | |
| 228 | #endif |