1 // SPDX-License-Identifier: GPL-2.0-only 1
2 /*
3 * SM3 secure hash, as specified by OSCCA GM/T
4 * described at https://tools.ietf.org/html/dr
5 *
6 * Copyright (C) 2017 ARM Limited or its affil
7 * Written by Gilad Ben-Yossef <gilad@benyosse
8 * Copyright (C) 2021 Tianjia Zhang <tianjia.z
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, 0x
24 0x8e, 0x61, 0x19, 0x48, 0x31, 0xE8, 0x
25 0x22, 0xBE, 0xC8, 0xC7, 0x28, 0xFE, 0x
26 0x7E, 0xD0, 0x35, 0xEB, 0x50, 0x82, 0x
27 };
28 EXPORT_SYMBOL_GPL(sm3_zero_message_hash);
29
30 static int crypto_sm3_update(struct shash_desc
31 unsigned int len)
32 {
33 sm3_update(shash_desc_ctx(desc), data,
34 return 0;
35 }
36
37 static int crypto_sm3_final(struct shash_desc
38 {
39 sm3_final(shash_desc_ctx(desc), out);
40 return 0;
41 }
42
43 static int crypto_sm3_finup(struct shash_desc
44 unsigned int len, u8 *
45 {
46 struct sm3_state *sctx = shash_desc_ct
47
48 if (len)
49 sm3_update(sctx, data, len);
50 sm3_final(sctx, hash);
51 return 0;
52 }
53
54 static struct shash_alg sm3_alg = {
55 .digestsize = SM3_DIGEST_SIZ
56 .init = sm3_base_init,
57 .update = crypto_sm3_upd
58 .final = crypto_sm3_fin
59 .finup = crypto_sm3_fin
60 .descsize = sizeof(struct
61 .base = {
62 .cra_name = "sm3",
63 .cra_driver_name = "sm3-g
64 .cra_priority = 100,
65 .cra_blocksize = SM3_BL
66 .cra_module = THIS_M
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
80 subsys_initcall(sm3_generic_mod_init);
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");
88
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