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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * SM3 secure hash, as specified by OSCCA GM/T 0004-2012 SM3 and4 * described at https://tools.ietf.org/html/draft-shen-sm3-hash-015 *6 * Copyright (C) 2017 ARM Limited or its affiliates.7 * Written by Gilad Ben-Yossef <gilad@benyossef.com>8 * Copyright (C) 2021 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>9 */10 11#include <crypto/internal/hash.h>12#include <linux/init.h>13#include <linux/module.h>14#include <linux/mm.h>15#include <linux/types.h>16#include <crypto/sm3.h>17#include <crypto/sm3_base.h>18#include <linux/bitops.h>19#include <asm/byteorder.h>20#include <linux/unaligned.h>21 22const u8 sm3_zero_message_hash[SM3_DIGEST_SIZE] = {23 0x1A, 0xB2, 0x1D, 0x83, 0x55, 0xCF, 0xA1, 0x7F,24 0x8e, 0x61, 0x19, 0x48, 0x31, 0xE8, 0x1A, 0x8F,25 0x22, 0xBE, 0xC8, 0xC7, 0x28, 0xFE, 0xFB, 0x74,26 0x7E, 0xD0, 0x35, 0xEB, 0x50, 0x82, 0xAA, 0x2B27};28EXPORT_SYMBOL_GPL(sm3_zero_message_hash);29 30static int crypto_sm3_update(struct shash_desc *desc, const u8 *data,31 unsigned int len)32{33 sm3_update(shash_desc_ctx(desc), data, len);34 return 0;35}36 37static int crypto_sm3_final(struct shash_desc *desc, u8 *out)38{39 sm3_final(shash_desc_ctx(desc), out);40 return 0;41}42 43static int crypto_sm3_finup(struct shash_desc *desc, const u8 *data,44 unsigned int len, u8 *hash)45{46 struct sm3_state *sctx = shash_desc_ctx(desc);47 48 if (len)49 sm3_update(sctx, data, len);50 sm3_final(sctx, hash);51 return 0;52}53 54static struct shash_alg sm3_alg = {55 .digestsize = SM3_DIGEST_SIZE,56 .init = sm3_base_init,57 .update = crypto_sm3_update,58 .final = crypto_sm3_final,59 .finup = crypto_sm3_finup,60 .descsize = sizeof(struct sm3_state),61 .base = {62 .cra_name = "sm3",63 .cra_driver_name = "sm3-generic",64 .cra_priority = 100,65 .cra_blocksize = SM3_BLOCK_SIZE,66 .cra_module = THIS_MODULE,67 }68};69 70static int __init sm3_generic_mod_init(void)71{72 return crypto_register_shash(&sm3_alg);73}74 75static void __exit sm3_generic_mod_fini(void)76{77 crypto_unregister_shash(&sm3_alg);78}79 80subsys_initcall(sm3_generic_mod_init);81module_exit(sm3_generic_mod_fini);82 83MODULE_LICENSE("GPL v2");84MODULE_DESCRIPTION("SM3 Secure Hash Algorithm");85 86MODULE_ALIAS_CRYPTO("sm3");87MODULE_ALIAS_CRYPTO("sm3-generic");88