1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Common values for SM3 algorithm
4 *
5 * Copyright (C) 2017 ARM Limited or its affiliates.
6 * Copyright (C) 2017 Gilad Ben-Yossef <gilad@benyossef.com>
7 * Copyright (C) 2021 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
8 */
9
10#ifndef _CRYPTO_SM3_H
11#define _CRYPTO_SM3_H
12
13#include <linux/types.h>
14
15#define SM3_DIGEST_SIZE 32
16#define SM3_BLOCK_SIZE 64
17#define SM3_STATE_SIZE 40
18
19#define SM3_T1 0x79CC4519
20#define SM3_T2 0x7A879D8A
21
22#define SM3_IVA 0x7380166f
23#define SM3_IVB 0x4914b2b9
24#define SM3_IVC 0x172442d7
25#define SM3_IVD 0xda8a0600
26#define SM3_IVE 0xa96f30bc
27#define SM3_IVF 0x163138aa
28#define SM3_IVG 0xe38dee4d
29#define SM3_IVH 0xb0fb0e4e
30
31extern const u8 sm3_zero_message_hash[SM3_DIGEST_SIZE];
32
33struct sm3_state {
34 u32 state[SM3_DIGEST_SIZE / 4];
35 u64 count;
36 u8 buffer[SM3_BLOCK_SIZE];
37};
38
39/*
40 * Stand-alone implementation of the SM3 algorithm. It is designed to
41 * have as little dependencies as possible so it can be used in the
42 * kexec_file purgatory. In other cases you should generally use the
43 * hash APIs from include/crypto/hash.h. Especially when hashing large
44 * amounts of data as those APIs may be hw-accelerated.
45 *
46 * For details see lib/crypto/sm3.c
47 */
48
49static inline void sm3_init(struct sm3_state *sctx)
50{
51 sctx->state[0] = SM3_IVA;
52 sctx->state[1] = SM3_IVB;
53 sctx->state[2] = SM3_IVC;
54 sctx->state[3] = SM3_IVD;
55 sctx->state[4] = SM3_IVE;
56 sctx->state[5] = SM3_IVF;
57 sctx->state[6] = SM3_IVG;
58 sctx->state[7] = SM3_IVH;
59 sctx->count = 0;
60}
61
62void sm3_block_generic(struct sm3_state *sctx, u8 const *data, int blocks);
63
64#endif
65

source code of linux/include/crypto/sm3.h