chiark - git - mdw - catacomb/blob - symm/serpent-sbox.h

   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