/*

 * Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.

 * Copyright 2017 Ribose Inc. All Rights Reserved.

 * Ported from Ribose contributions from Botan.

 *

 * Licensed under the OpenSSL license (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#include <string.h>

#include "crypto/sm3.h"

#define DATA_ORDER_IS_BIG_ENDIAN

#define HASH_LONG               SM3_WORD

#define HASH_CTX                SM3_CTX

#define HASH_CBLOCK             SM3_CBLOCK

#define HASH_UPDATE             sm3_update

#define HASH_TRANSFORM          sm3_transform

#define HASH_FINAL              sm3_final

#define HASH_MAKE_STRING(c, s)              \

      do {                                  \

        unsigned long ll;                   \

        ll=(c)->A; (void)HOST_l2c(ll, (s)); \

        ll=(c)->B; (void)HOST_l2c(ll, (s)); \

        ll=(c)->C; (void)HOST_l2c(ll, (s)); \

        ll=(c)->D; (void)HOST_l2c(ll, (s)); \

        ll=(c)->E; (void)HOST_l2c(ll, (s)); \

        ll=(c)->F; (void)HOST_l2c(ll, (s)); \

        ll=(c)->G; (void)HOST_l2c(ll, (s)); \

        ll=(c)->H; (void)HOST_l2c(ll, (s)); \

      } while (0)

#define HASH_BLOCK_DATA_ORDER   sm3_block_data_order

void sm3_transform(SM3_CTX *c, const unsigned char *data);

#include "crypto/md32_common.h"

#define P0(X) (X ^ ROTATE(X, 9) ^ ROTATE(X, 17))

#define P1(X) (X ^ ROTATE(X, 15) ^ ROTATE(X, 23))

#define FF0(X,Y,Z) (X ^ Y ^ Z)

#define GG0(X,Y,Z) (X ^ Y ^ Z)

#define FF1(X,Y,Z) ((X & Y) | ((X | Y) & Z))

#define GG1(X,Y,Z) ((Z ^ (X & (Y ^ Z))))

#define EXPAND(W0,W7,W13,W3,W10) \

   (P1(W0 ^ W7 ^ ROTATE(W13, 15)) ^ ROTATE(W3, 7) ^ W10)

#define RND(A, B, C, D, E, F, G, H, TJ, Wi, Wj, FF, GG)           \

     do {                                                         \

       const SM3_WORD A12 = ROTATE(A, 12);                        \

       const SM3_WORD A12_SM = A12 + E + TJ;                      \

       const SM3_WORD SS1 = ROTATE(A12_SM, 7);                    \

       const SM3_WORD TT1 = FF(A, B, C) + D + (SS1 ^ A12) + (Wj); \

       const SM3_WORD TT2 = GG(E, F, G) + H + SS1 + Wi;           \

       B = ROTATE(B, 9);                                          \

       D = TT1;                                                   \

       F = ROTATE(F, 19);                                         \

       H = P0(TT2);                                               \

     } while(0)

#define R1(A,B,C,D,E,F,G,H,TJ,Wi,Wj) \

   RND(A,B,C,D,E,F,G,H,TJ,Wi,Wj,FF0,GG0)

#define R2(A,B,C,D,E,F,G,H,TJ,Wi,Wj) \

   RND(A,B,C,D,E,F,G,H,TJ,Wi,Wj,FF1,GG1)

#define SM3_A 0x7380166fUL

#define SM3_B 0x4914b2b9UL

#define SM3_C 0x172442d7UL

#define SM3_D 0xda8a0600UL

#define SM3_E 0xa96f30bcUL

#define SM3_F 0x163138aaUL

#define SM3_G 0xe38dee4dUL

#define SM3_H 0xb0fb0e4eUL