lib/crypto_backend/argon2/blake2/blamka-round-ref.h

   1 /*
   2  * Argon2 reference source code package - reference C implementations
   3  *
   4  * Copyright 2015
   5  * Daniel Dinu, Dmitry Khovratovich, Jean-Philippe Aumasson, and Samuel Neves
   6  *
   7  * You may use this work under the terms of a Creative Commons CC0 1.0
   8  * License/Waiver or the Apache Public License 2.0, at your option. The terms of
   9  * these licenses can be found at:
  10  *
  11  * - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
  12  * - Apache 2.0        : http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * You should have received a copy of both of these licenses along with this
  15  * software. If not, they may be obtained at the above URLs.
  16  */
  17
  18 #ifndef BLAKE_ROUND_MKA_H
  19 #define BLAKE_ROUND_MKA_H
  20
  21 #include "blake2.h"
  22 #include "blake2-impl.h"
  23
  24 /* designed by the Lyra PHC team */
  25 static BLAKE2_INLINE uint64_t fBlaMka(uint64_t x, uint64_t y) {
  26     const uint64_t m = UINT64_C(0xFFFFFFFF);
  27     const uint64_t xy = (x & m) * (y & m);
  28     return x + y + 2 * xy;
  29 }
  30
  31 #define G(a, b, c, d)                                                          \
  32     do {                                                                       \
  33         a = fBlaMka(a, b);                                                     \
  34         d = rotr64(d ^ a, 32);                                                 \
  35         c = fBlaMka(c, d);                                                     \
  36         b = rotr64(b ^ c, 24);                                                 \
  37         a = fBlaMka(a, b);                                                     \
  38         d = rotr64(d ^ a, 16);                                                 \
  39         c = fBlaMka(c, d);                                                     \
  40         b = rotr64(b ^ c, 63);                                                 \
  41     } while ((void)0, 0)
  42
  43 #define BLAKE2_ROUND_NOMSG(v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11,   \
  44                            v12, v13, v14, v15)                                 \
  45     do {                                                                       \
  46         G(v0, v4, v8, v12);                                                    \
  47         G(v1, v5, v9, v13);                                                    \
  48         G(v2, v6, v10, v14);                                                   \
  49         G(v3, v7, v11, v15);                                                   \
  50         G(v0, v5, v10, v15);                                                   \
  51         G(v1, v6, v11, v12);                                                   \
  52         G(v2, v7, v8, v13);                                                    \
  53         G(v3, v4, v9, v14);                                                    \
  54     } while ((void)0, 0)
  55
  56 #endif