projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| caab277b | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 4f0fc160 GBY |
2 | /* |
| 3 | * SM3 secure hash, as specified by OSCCA GM/T 0004-2012 SM3 and | |
| 4 | * described at https://tools.ietf.org/html/draft-shen-sm3-hash-01 | |
| 5 | * | |
| 6 | * Copyright (C) 2017 ARM Limited or its affiliates. | |
| 7 | * Written by Gilad Ben-Yossef <[email protected]> | |
| b4784a45 | 8 | * Copyright (C) 2021 Tianjia Zhang <[email protected]> |
| 4f0fc160 GBY |
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 <asm/unaligned.h> | |
| 21 | ||
| 22 | const 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, 0x2B | |
| 27 | }; | |
| 28 | EXPORT_SYMBOL_GPL(sm3_zero_message_hash); | |
| 29 | ||
| b4784a45 | 30 | static int crypto_sm3_update(struct shash_desc *desc, const u8 *data, |
| 4f0fc160 GBY |
31 | unsigned int len) |
| 32 | { | |
| b4784a45 TZ |
33 | sm3_update(shash_desc_ctx(desc), data, len); |
| 34 | return 0; | |
| 4f0fc160 | 35 | } |
| 4f0fc160 | 36 | |
| b4784a45 | 37 | static int crypto_sm3_final(struct shash_desc *desc, u8 *out) |
| 4f0fc160 | 38 | { |
| b4784a45 TZ |
39 | sm3_final(shash_desc_ctx(desc), out); |
| 40 | return 0; | |
| 4f0fc160 GBY |
41 | } |
| 42 | ||
| b4784a45 | 43 | static int crypto_sm3_finup(struct shash_desc *desc, const u8 *data, |
| 4f0fc160 GBY |
44 | unsigned int len, u8 *hash) |
| 45 | { | |
| b4784a45 TZ |
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; | |
| 4f0fc160 | 52 | } |
| 4f0fc160 GBY |
53 | |
| 54 | static struct shash_alg sm3_alg = { | |
| 55 | .digestsize = SM3_DIGEST_SIZE, | |
| 56 | .init = sm3_base_init, | |
| 57 | .update = crypto_sm3_update, | |
| f4928287 | 58 | .final = crypto_sm3_final, |
| 4f0fc160 GBY |
59 | .finup = crypto_sm3_finup, |
| 60 | .descsize = sizeof(struct sm3_state), | |
| 61 | .base = { | |
| 62 | .cra_name = "sm3", | |
| 63 | .cra_driver_name = "sm3-generic", | |
| b4784a45 | 64 | .cra_priority = 100, |
| 4f0fc160 GBY |
65 | .cra_blocksize = SM3_BLOCK_SIZE, |
| 66 | .cra_module = THIS_MODULE, | |
| 67 | } | |
| 68 | }; | |
| 69 | ||
| 70 | static int __init sm3_generic_mod_init(void) | |
| 71 | { | |
| 72 | return crypto_register_shash(&sm3_alg); | |
| 73 | } | |
| 74 | ||
| 75 | static void __exit sm3_generic_mod_fini(void) | |
| 76 | { | |
| 77 | crypto_unregister_shash(&sm3_alg); | |
| 78 | } | |
| 79 | ||
| c4741b23 | 80 | subsys_initcall(sm3_generic_mod_init); |
| 4f0fc160 GBY |
81 | module_exit(sm3_generic_mod_fini); |
| 82 | ||
| 83 | MODULE_LICENSE("GPL v2"); | |
| 84 | MODULE_DESCRIPTION("SM3 Secure Hash Algorithm"); | |
| 85 | ||
| 86 | MODULE_ALIAS_CRYPTO("sm3"); | |
| 87 | MODULE_ALIAS_CRYPTO("sm3-generic"); |