1 // SPDX-License-Identifier: GPL-2.0-only 1 // SPDX-License-Identifier: GPL-2.0-only
2 /* 2 /*
3 * SM3 secure hash, as specified by OSCCA GM/T 3 * SM3 secure hash, as specified by OSCCA GM/T 0004-2012 SM3 and
4 * described at https://tools.ietf.org/html/dr 4 * described at https://tools.ietf.org/html/draft-shen-sm3-hash-01
5 * 5 *
6 * Copyright (C) 2017 ARM Limited or its affil 6 * Copyright (C) 2017 ARM Limited or its affiliates.
7 * Written by Gilad Ben-Yossef <gilad@benyosse 7 * Written by Gilad Ben-Yossef <gilad@benyossef.com>
8 * Copyright (C) 2021 Tianjia Zhang <tianjia.z 8 * Copyright (C) 2021 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
9 */ 9 */
10 10
11 #include <crypto/internal/hash.h> 11 #include <crypto/internal/hash.h>
12 #include <linux/init.h> 12 #include <linux/init.h>
13 #include <linux/module.h> 13 #include <linux/module.h>
14 #include <linux/mm.h> 14 #include <linux/mm.h>
15 #include <linux/types.h> 15 #include <linux/types.h>
16 #include <crypto/sm3.h> 16 #include <crypto/sm3.h>
17 #include <crypto/sm3_base.h> 17 #include <crypto/sm3_base.h>
18 #include <linux/bitops.h> 18 #include <linux/bitops.h>
19 #include <asm/byteorder.h> 19 #include <asm/byteorder.h>
20 #include <asm/unaligned.h> 20 #include <asm/unaligned.h>
21 21
22 const u8 sm3_zero_message_hash[SM3_DIGEST_SIZE 22 const u8 sm3_zero_message_hash[SM3_DIGEST_SIZE] = {
23 0x1A, 0xB2, 0x1D, 0x83, 0x55, 0xCF, 0x 23 0x1A, 0xB2, 0x1D, 0x83, 0x55, 0xCF, 0xA1, 0x7F,
24 0x8e, 0x61, 0x19, 0x48, 0x31, 0xE8, 0x 24 0x8e, 0x61, 0x19, 0x48, 0x31, 0xE8, 0x1A, 0x8F,
25 0x22, 0xBE, 0xC8, 0xC7, 0x28, 0xFE, 0x 25 0x22, 0xBE, 0xC8, 0xC7, 0x28, 0xFE, 0xFB, 0x74,
26 0x7E, 0xD0, 0x35, 0xEB, 0x50, 0x82, 0x 26 0x7E, 0xD0, 0x35, 0xEB, 0x50, 0x82, 0xAA, 0x2B
27 }; 27 };
28 EXPORT_SYMBOL_GPL(sm3_zero_message_hash); 28 EXPORT_SYMBOL_GPL(sm3_zero_message_hash);
29 29
30 static int crypto_sm3_update(struct shash_desc 30 static int crypto_sm3_update(struct shash_desc *desc, const u8 *data,
31 unsigned int len) 31 unsigned int len)
32 { 32 {
33 sm3_update(shash_desc_ctx(desc), data, 33 sm3_update(shash_desc_ctx(desc), data, len);
34 return 0; 34 return 0;
35 } 35 }
36 36
37 static int crypto_sm3_final(struct shash_desc 37 static int crypto_sm3_final(struct shash_desc *desc, u8 *out)
38 { 38 {
39 sm3_final(shash_desc_ctx(desc), out); 39 sm3_final(shash_desc_ctx(desc), out);
40 return 0; 40 return 0;
41 } 41 }
42 42
43 static int crypto_sm3_finup(struct shash_desc 43 static int crypto_sm3_finup(struct shash_desc *desc, const u8 *data,
44 unsigned int len, u8 * 44 unsigned int len, u8 *hash)
45 { 45 {
46 struct sm3_state *sctx = shash_desc_ct 46 struct sm3_state *sctx = shash_desc_ctx(desc);
47 47
48 if (len) 48 if (len)
49 sm3_update(sctx, data, len); 49 sm3_update(sctx, data, len);
50 sm3_final(sctx, hash); 50 sm3_final(sctx, hash);
51 return 0; 51 return 0;
52 } 52 }
53 53
54 static struct shash_alg sm3_alg = { 54 static struct shash_alg sm3_alg = {
55 .digestsize = SM3_DIGEST_SIZ 55 .digestsize = SM3_DIGEST_SIZE,
56 .init = sm3_base_init, 56 .init = sm3_base_init,
57 .update = crypto_sm3_upd 57 .update = crypto_sm3_update,
58 .final = crypto_sm3_fin 58 .final = crypto_sm3_final,
59 .finup = crypto_sm3_fin 59 .finup = crypto_sm3_finup,
60 .descsize = sizeof(struct 60 .descsize = sizeof(struct sm3_state),
61 .base = { 61 .base = {
62 .cra_name = "sm3", 62 .cra_name = "sm3",
63 .cra_driver_name = "sm3-g 63 .cra_driver_name = "sm3-generic",
64 .cra_priority = 100, 64 .cra_priority = 100,
65 .cra_blocksize = SM3_BL 65 .cra_blocksize = SM3_BLOCK_SIZE,
66 .cra_module = THIS_M 66 .cra_module = THIS_MODULE,
67 } 67 }
68 }; 68 };
69 69
70 static int __init sm3_generic_mod_init(void) 70 static int __init sm3_generic_mod_init(void)
71 { 71 {
72 return crypto_register_shash(&sm3_alg) 72 return crypto_register_shash(&sm3_alg);
73 } 73 }
74 74
75 static void __exit sm3_generic_mod_fini(void) 75 static void __exit sm3_generic_mod_fini(void)
76 { 76 {
77 crypto_unregister_shash(&sm3_alg); 77 crypto_unregister_shash(&sm3_alg);
78 } 78 }
79 79
80 subsys_initcall(sm3_generic_mod_init); 80 subsys_initcall(sm3_generic_mod_init);
81 module_exit(sm3_generic_mod_fini); 81 module_exit(sm3_generic_mod_fini);
82 82
83 MODULE_LICENSE("GPL v2"); 83 MODULE_LICENSE("GPL v2");
84 MODULE_DESCRIPTION("SM3 Secure Hash Algorithm" 84 MODULE_DESCRIPTION("SM3 Secure Hash Algorithm");
85 85
86 MODULE_ALIAS_CRYPTO("sm3"); 86 MODULE_ALIAS_CRYPTO("sm3");
87 MODULE_ALIAS_CRYPTO("sm3-generic"); 87 MODULE_ALIAS_CRYPTO("sm3-generic");
88 88
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