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 18 #define SM3_T1 0x79CC4519 19 #define SM3_T2 0x7A879D8A 20 21 #define SM3_IVA 0x7380166f 22 #define SM3_IVB 0x4914b2b9 23 #define SM3_IVC 0x172442d7 24 #define SM3_IVD 0xda8a0600 25 #define SM3_IVE 0xa96f30bc 26 #define SM3_IVF 0x163138aa 27 #define SM3_IVG 0xe38dee4d 28 #define SM3_IVH 0xb0fb0e4e 29 30 extern const u8 sm3_zero_message_hash[SM3_DIGEST_SIZE]; 31 32 struct sm3_state { 33 u32 state[SM3_DIGEST_SIZE / 4]; 34 u64 count; 35 u8 buffer[SM3_BLOCK_SIZE]; 36 }; 37 38 /* 39 * Stand-alone implementation of the SM3 algorithm. It is designed to 40 * have as little dependencies as possible so it can be used in the 41 * kexec_file purgatory. In other cases you should generally use the 42 * hash APIs from include/crypto/hash.h. Especially when hashing large 43 * amounts of data as those APIs may be hw-accelerated. 44 * 45 * For details see lib/crypto/sm3.c 46 */ 47 sm3_init(struct sm3_state * sctx)48static inline void sm3_init(struct sm3_state *sctx) 49 { 50 sctx->state[0] = SM3_IVA; 51 sctx->state[1] = SM3_IVB; 52 sctx->state[2] = SM3_IVC; 53 sctx->state[3] = SM3_IVD; 54 sctx->state[4] = SM3_IVE; 55 sctx->state[5] = SM3_IVF; 56 sctx->state[6] = SM3_IVG; 57 sctx->state[7] = SM3_IVH; 58 sctx->count = 0; 59 } 60 61 void sm3_update(struct sm3_state *sctx, const u8 *data, unsigned int len); 62 void sm3_final(struct sm3_state *sctx, u8 *out); 63 64 #endif 65