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87 lines
2.1 KiB
87 lines
2.1 KiB
// 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 <[email protected]> |
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* Copyright (C) 2021 Tianjia Zhang <[email protected]> |
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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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