65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Common values for SM3 algorithm
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*
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* Copyright (C) 2017 ARM Limited or its affiliates.
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* Copyright (C) 2017 Gilad Ben-Yossef <gilad@benyossef.com>
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* Copyright (C) 2021 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
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*/
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#ifndef _CRYPTO_SM3_H
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#define _CRYPTO_SM3_H
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#include <linux/types.h>
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#define SM3_DIGEST_SIZE 32
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#define SM3_BLOCK_SIZE 64
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#define SM3_T1 0x79CC4519
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#define SM3_T2 0x7A879D8A
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#define SM3_IVA 0x7380166f
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#define SM3_IVB 0x4914b2b9
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#define SM3_IVC 0x172442d7
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#define SM3_IVD 0xda8a0600
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#define SM3_IVE 0xa96f30bc
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#define SM3_IVF 0x163138aa
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#define SM3_IVG 0xe38dee4d
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#define SM3_IVH 0xb0fb0e4e
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extern const u8 sm3_zero_message_hash[SM3_DIGEST_SIZE];
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struct sm3_state {
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u32 state[SM3_DIGEST_SIZE / 4];
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u64 count;
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u8 buffer[SM3_BLOCK_SIZE];
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};
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/*
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* Stand-alone implementation of the SM3 algorithm. It is designed to
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* have as little dependencies as possible so it can be used in the
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* kexec_file purgatory. In other cases you should generally use the
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* hash APIs from include/crypto/hash.h. Especially when hashing large
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* amounts of data as those APIs may be hw-accelerated.
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*
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* For details see lib/crypto/sm3.c
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*/
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static inline void sm3_init(struct sm3_state *sctx)
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{
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sctx->state[0] = SM3_IVA;
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sctx->state[1] = SM3_IVB;
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sctx->state[2] = SM3_IVC;
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sctx->state[3] = SM3_IVD;
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sctx->state[4] = SM3_IVE;
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sctx->state[5] = SM3_IVF;
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sctx->state[6] = SM3_IVG;
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sctx->state[7] = SM3_IVH;
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sctx->count = 0;
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}
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void sm3_update(struct sm3_state *sctx, const u8 *data, unsigned int len);
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void sm3_final(struct sm3_state *sctx, u8 *out);
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#endif
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