/*
* Serpent SBox Expressions
* (C) 1999-2007,2013 Jack Lloyd
*
* The sbox expressions used here were discovered by Dag Arne Osvik and
* are described in his paper "Speeding Up Serpent".
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#ifndef BOTAN_SERPENT_SBOX_H__
#define BOTAN_SERPENT_SBOX_H__

#define SBoxE1(B0, B1, B2, B3)                    \
   do {                                           \
      B3 ^= B0;                                   \
      auto B4 = B1;                               \
      B1 &= B3;                                   \
      B4 ^= B2;                                   \
      B1 ^= B0;                                   \
      B0 |= B3;                                   \
      B0 ^= B4;                                   \
      B4 ^= B3;                                   \
      B3 ^= B2;                                   \
      B2 |= B1;                                   \
      B2 ^= B4;                                   \
      B4 = ~B4;                                   \
      B4 |= B1;                                   \
      B1 ^= B3;                                   \
      B1 ^= B4;                                   \
      B3 |= B0;                                   \
      B1 ^= B3;                                   \
      B4 ^= B3;                                   \
      B3 = B0;                                    \
      B0 = B1;                                    \
      B1 = B4;                                    \
   } while(0);

#define SBoxE2(B0, B1, B2, B3)                    \
   do {                                           \
      B0 = ~B0;                                   \
      B2 = ~B2;                                   \
      auto B4 = B0;                               \
      B0 &= B1;                                   \
      B2 ^= B0;                                   \
      B0 |= B3;                                   \
      B3 ^= B2;                                   \
      B1 ^= B0;                                   \
      B0 ^= B4;                                   \
      B4 |= B1;                                   \
      B1 ^= B3;                                   \
      B2 |= B0;                                   \
      B2 &= B4;                                   \
      B0 ^= B1;                                   \
      B1 &= B2;                                   \
      B1 ^= B0;                                   \
      B0 &= B2;                                   \
      B4 ^= B0;                                   \
      B0 = B2;                                    \
      B2 = B3;                                    \
      B3 = B1;                                    \
      B1 = B4;                                    \
   } while(0);

#define SBoxE3(B0, B1, B2, B3)                    \
   do {                                           \
      auto B4 = B0;                               \
      B0 &= B2;                                   \
      B0 ^= B3;                                   \
      B2 ^= B1;                                   \
      B2 ^= B0;                                   \
      B3 |= B4;                                   \
      B3 ^= B1;                                   \
      B4 ^= B2;                                   \
      B1 = B3;                                    \
      B3 |= B4;                                   \
      B3 ^= B0;                                   \
      B0 &= B1;                                   \
      B4 ^= B0;                                   \
      B1 ^= B3;                                   \
      B1 ^= B4;                                   \
      B0 = B2;                                    \
      B2 = B1;                                    \
      B1 = B3;                                    \
      B3 = ~B4;                                   \
   } while(0);

#define SBoxE4(B0, B1, B2, B3)                    \
   do {                                           \
      auto B4 = B0;                               \
      B0 |= B3;                                   \
      B3 ^= B1;                                   \
      B1 &= B4;                                   \
      B4 ^= B2;                                   \
      B2 ^= B3;                                   \
      B3 &= B0;                                   \
      B4 |= B1;                                   \
      B3 ^= B4;                                   \
      B0 ^= B1;                                   \
      B4 &= B0;                                   \
      B1 ^= B3;                                   \
      B4 ^= B2;                                   \
      B1 |= B0;                                   \
      B1 ^= B2;                                   \
      B0 ^= B3;                                   \
      B2 = B1;                                    \
      B1 |= B3;                                   \
      B0 ^= B1;                                   \
      B1 = B2;                                    \
      B2 = B3;                                    \
      B3 = B4;                                    \
   } while(0);

#define SBoxE5(B0, B1, B2, B3)                    \
   do {                                           \
      B1 ^= B3;                                   \
      B3 = ~B3;                                   \
      B2 ^= B3;                                   \
      B3 ^= B0;                                   \
      auto B4 = B1;                               \
      B1 &= B3;                                   \
      B1 ^= B2;                                   \
      B4 ^= B3;                                   \
      B0 ^= B4;                                   \
      B2 &= B4;                                   \
      B2 ^= B0;                                   \
      B0 &= B1;                                   \
      B3 ^= B0;                                   \
      B4 |= B1;                                   \
      B4 ^= B0;                                   \
      B0 |= B3;                                   \
      B0 ^= B2;                                   \
      B2 &= B3;                                   \
      B0 = ~B0;                                   \
      B4 ^= B2;                                   \
      B2 = B0;                                    \
      B0 = B1;                                    \
      B1 = B4;                                    \
   } while(0);

#define SBoxE6(B0, B1, B2, B3)                    \
   do {                                           \
      B0 ^= B1;                                   \
      B1 ^= B3;                                   \
      B3 = ~B3;                                   \
      auto B4 = B1;                               \
      B1 &= B0;                                   \
      B2 ^= B3;                                   \
      B1 ^= B2;                                   \
      B2 |= B4;                                   \
      B4 ^= B3;                                   \
      B3 &= B1;                                   \
      B3 ^= B0;                                   \
      B4 ^= B1;                                   \
      B4 ^= B2;                                   \
      B2 ^= B0;                                   \
      B0 &= B3;                                   \
      B2 = ~B2;                                   \
      B0 ^= B4;                                   \
      B4 |= B3;                                   \
      B4 ^= B2;                                   \
      B2 = B0;                                    \
      B0 = B1;                                    \
      B1 = B3;                                    \
      B3 = B4;                                    \
   } while(0);

#define SBoxE7(B0, B1, B2, B3)                    \
   do {                                           \
      B2 = ~B2;                                   \
      auto B4 = B3;                               \
      B3 &= B0;                                   \
      B0 ^= B4;                                   \
      B3 ^= B2;                                   \
      B2 |= B4;                                   \
      B1 ^= B3;                                   \
      B2 ^= B0;                                   \
      B0 |= B1;                                   \
      B2 ^= B1;                                   \
      B4 ^= B0;                                   \
      B0 |= B3;                                   \
      B0 ^= B2;                                   \
      B4 ^= B3;                                   \
      B4 ^= B0;                                   \
      B3 = ~B3;                                   \
      B2 &= B4;                                   \
      B3 ^= B2;                                   \
      B2 = B4;                                    \
   } while(0);

#define SBoxE8(B0, B1, B2, B3)                    \
   do {                                           \
      auto B4 = B1;                               \
      B1 |= B2;                                   \
      B1 ^= B3;                                   \
      B4 ^= B2;                                   \
      B2 ^= B1;                                   \
      B3 |= B4;                                   \
      B3 &= B0;                                   \
      B4 ^= B2;                                   \
      B3 ^= B1;                                   \
      B1 |= B4;                                   \
      B1 ^= B0;                                   \
      B0 |= B4;                                   \
      B0 ^= B2;                                   \
      B1 ^= B4;                                   \
      B2 ^= B1;                                   \
      B1 &= B0;                                   \
      B1 ^= B4;                                   \
      B2 = ~B2;                                   \
      B2 |= B0;                                   \
      B4 ^= B2;                                   \
      B2 = B1;                                    \
      B1 = B3;                                    \
      B3 = B0;                                    \
      B0 = B4;                                    \
   } while(0);

#define SBoxD1(B0, B1, B2, B3)                    \
   do {                                           \
      B2 = ~B2;                                   \
      auto B4 = B1;                               \
      B1 |= B0;                                   \
      B4 = ~B4;                                   \
      B1 ^= B2;                                   \
      B2 |= B4;                                   \
      B1 ^= B3;                                   \
      B0 ^= B4;                                   \
      B2 ^= B0;                                   \
      B0 &= B3;                                   \
      B4 ^= B0;                                   \
      B0 |= B1;                                   \
      B0 ^= B2;                                   \
      B3 ^= B4;                                   \
      B2 ^= B1;                                   \
      B3 ^= B0;                                   \
      B3 ^= B1;                                   \
      B2 &= B3;                                   \
      B4 ^= B2;                                   \
      B2 = B1;                                    \
      B1 = B4;                                    \
      } while(0);

#define SBoxD2(B0, B1, B2, B3)                    \
   do {                                           \
      auto B4 = B1;                               \
      B1 ^= B3;                                   \
      B3 &= B1;                                   \
      B4 ^= B2;                                   \
      B3 ^= B0;                                   \
      B0 |= B1;                                   \
      B2 ^= B3;                                   \
      B0 ^= B4;                                   \
      B0 |= B2;                                   \
      B1 ^= B3;                                   \
      B0 ^= B1;                                   \
      B1 |= B3;                                   \
      B1 ^= B0;                                   \
      B4 = ~B4;                                   \
      B4 ^= B1;                                   \
      B1 |= B0;                                   \
      B1 ^= B0;                                   \
      B1 |= B4;                                   \
      B3 ^= B1;                                   \
      B1 = B0;                                    \
      B0 = B4;                                    \
      B4 = B2;                                    \
      B2 = B3;                                    \
      B3 = B4;                                    \
      } while(0);

#define SBoxD3(B0, B1, B2, B3)                    \
   do {                                           \
      B2 ^= B3;                                   \
      B3 ^= B0;                                   \
      auto B4 = B3;                               \
      B3 &= B2;                                   \
      B3 ^= B1;                                   \
      B1 |= B2;                                   \
      B1 ^= B4;                                   \
      B4 &= B3;                                   \
      B2 ^= B3;                                   \
      B4 &= B0;                                   \
      B4 ^= B2;                                   \
      B2 &= B1;                                   \
      B2 |= B0;                                   \
      B3 = ~B3;                                   \
      B2 ^= B3;                                   \
      B0 ^= B3;                                   \
      B0 &= B1;                                   \
      B3 ^= B4;                                   \
      B3 ^= B0;                                   \
      B0 = B1;                                    \
      B1 = B4;                                    \
      } while(0);

#define SBoxD4(B0, B1, B2, B3)                    \
   do {                                           \
      auto B4 = B2;                               \
      B2 ^= B1;                                   \
      B0 ^= B2;                                   \
      B4 &= B2;                                   \
      B4 ^= B0;                                   \
      B0 &= B1;                                   \
      B1 ^= B3;                                   \
      B3 |= B4;                                   \
      B2 ^= B3;                                   \
      B0 ^= B3;                                   \
      B1 ^= B4;                                   \
      B3 &= B2;                                   \
      B3 ^= B1;                                   \
      B1 ^= B0;                                   \
      B1 |= B2;                                   \
      B0 ^= B3;                                   \
      B1 ^= B4;                                   \
      B0 ^= B1;                                   \
      B4 = B0;                                    \
      B0 = B2;                                    \
      B2 = B3;                                    \
      B3 = B4;                                    \
      } while(0);

#define SBoxD5(B0, B1, B2, B3)                    \
   do {                                           \
      auto B4 = B2;                               \
      B2 &= B3;                                   \
      B2 ^= B1;                                   \
      B1 |= B3;                                   \
      B1 &= B0;                                   \
      B4 ^= B2;                                   \
      B4 ^= B1;                                   \
      B1 &= B2;                                   \
      B0 = ~B0;                                   \
      B3 ^= B4;                                   \
      B1 ^= B3;                                   \
      B3 &= B0;                                   \
      B3 ^= B2;                                   \
      B0 ^= B1;                                   \
      B2 &= B0;                                   \
      B3 ^= B0;                                   \
      B2 ^= B4;                                   \
      B2 |= B3;                                   \
      B3 ^= B0;                                   \
      B2 ^= B1;                                   \
      B1 = B3;                                    \
      B3 = B4;                                    \
      } while(0);

#define SBoxD6(B0, B1, B2, B3)                    \
   do {                                           \
      B1 = ~B1;                                   \
      auto B4 = B3;                               \
      B2 ^= B1;                                   \
      B3 |= B0;                                   \
      B3 ^= B2;                                   \
      B2 |= B1;                                   \
      B2 &= B0;                                   \
      B4 ^= B3;                                   \
      B2 ^= B4;                                   \
      B4 |= B0;                                   \
      B4 ^= B1;                                   \
      B1 &= B2;                                   \
      B1 ^= B3;                                   \
      B4 ^= B2;                                   \
      B3 &= B4;                                   \
      B4 ^= B1;                                   \
      B3 ^= B4;                                   \
      B4 = ~B4;                                   \
      B3 ^= B0;                                   \
      B0 = B1;                                    \
      B1 = B4;                                    \
      B4 = B3;                                    \
      B3 = B2;                                    \
      B2 = B4;                                    \
      } while(0);

#define SBoxD7(B0, B1, B2, B3)                    \
   do {                                           \
      B0 ^= B2;                                   \
      auto B4 = B2;                               \
      B2 &= B0;                                   \
      B4 ^= B3;                                   \
      B2 = ~B2;                                   \
      B3 ^= B1;                                   \
      B2 ^= B3;                                   \
      B4 |= B0;                                   \
      B0 ^= B2;                                   \
      B3 ^= B4;                                   \
      B4 ^= B1;                                   \
      B1 &= B3;                                   \
      B1 ^= B0;                                   \
      B0 ^= B3;                                   \
      B0 |= B2;                                   \
      B3 ^= B1;                                   \
      B4 ^= B0;                                   \
      B0 = B1;                                    \
      B1 = B2;                                    \
      B2 = B4;                                    \
      } while(0);

#define SBoxD8(B0, B1, B2, B3)                    \
   do {                                           \
      auto B4 = B2;                               \
      B2 ^= B0;                                   \
      B0 &= B3;                                   \
      B4 |= B3;                                   \
      B2 = ~B2;                                   \
      B3 ^= B1;                                   \
      B1 |= B0;                                   \
      B0 ^= B2;                                   \
      B2 &= B4;                                   \
      B3 &= B4;                                   \
      B1 ^= B2;                                   \
      B2 ^= B0;                                   \
      B0 |= B2;                                   \
      B4 ^= B1;                                   \
      B0 ^= B3;                                   \
      B3 ^= B4;                                   \
      B4 |= B0;                                   \
      B3 ^= B2;                                   \
      B4 ^= B2;                                   \
      B2 = B1;                                    \
      B1 = B0;                                    \
      B0 = B3;                                    \
      B3 = B4;                                    \
      } while(0);

#endif