88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* SM3 secure hash, as specified by OSCCA GM/T 0004-2012 SM3 and
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* described at https://tools.ietf.org/html/draft-shen-sm3-hash-01
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*
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* Copyright (C) 2017 ARM Limited or its affiliates.
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* Written by 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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#include <crypto/internal/hash.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/mm.h>
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#include <linux/types.h>
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#include <crypto/sm3.h>
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#include <crypto/sm3_base.h>
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#include <linux/bitops.h>
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#include <asm/byteorder.h>
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#include <asm/unaligned.h>
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const u8 sm3_zero_message_hash[SM3_DIGEST_SIZE] = {
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0x1A, 0xB2, 0x1D, 0x83, 0x55, 0xCF, 0xA1, 0x7F,
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0x8e, 0x61, 0x19, 0x48, 0x31, 0xE8, 0x1A, 0x8F,
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0x22, 0xBE, 0xC8, 0xC7, 0x28, 0xFE, 0xFB, 0x74,
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0x7E, 0xD0, 0x35, 0xEB, 0x50, 0x82, 0xAA, 0x2B
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};
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EXPORT_SYMBOL_GPL(sm3_zero_message_hash);
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static int crypto_sm3_update(struct shash_desc *desc, const u8 *data,
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unsigned int len)
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{
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sm3_update(shash_desc_ctx(desc), data, len);
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return 0;
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}
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static int crypto_sm3_final(struct shash_desc *desc, u8 *out)
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{
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sm3_final(shash_desc_ctx(desc), out);
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return 0;
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}
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static int crypto_sm3_finup(struct shash_desc *desc, const u8 *data,
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unsigned int len, u8 *hash)
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{
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struct sm3_state *sctx = shash_desc_ctx(desc);
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if (len)
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sm3_update(sctx, data, len);
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sm3_final(sctx, hash);
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return 0;
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}
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static struct shash_alg sm3_alg = {
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.digestsize = SM3_DIGEST_SIZE,
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.init = sm3_base_init,
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.update = crypto_sm3_update,
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.final = crypto_sm3_final,
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.finup = crypto_sm3_finup,
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.descsize = sizeof(struct sm3_state),
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.base = {
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.cra_name = "sm3",
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.cra_driver_name = "sm3-generic",
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.cra_priority = 100,
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.cra_blocksize = SM3_BLOCK_SIZE,
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.cra_module = THIS_MODULE,
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}
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};
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static int __init sm3_generic_mod_init(void)
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{
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return crypto_register_shash(&sm3_alg);
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}
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static void __exit sm3_generic_mod_fini(void)
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{
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crypto_unregister_shash(&sm3_alg);
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}
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subsys_initcall(sm3_generic_mod_init);
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module_exit(sm3_generic_mod_fini);
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MODULE_LICENSE("GPL v2");
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MODULE_DESCRIPTION("SM3 Secure Hash Algorithm");
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MODULE_ALIAS_CRYPTO("sm3");
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MODULE_ALIAS_CRYPTO("sm3-generic");
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