1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Cryptographic API.
*
* s390 implementation of the SHA256 and SHA224 Secure Hash Algorithm.
*
* s390 Version:
* Copyright IBM Corp. 2019
* Author(s): Joerg Schmidbauer (jschmidb@de.ibm.com)
*/
#include <crypto/internal/hash.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/cpufeature.h>
#include <crypto/sha3.h>
#include <asm/cpacf.h>
#include "sha.h"
static int sha3_256_init(struct shash_desc *desc)
{
struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
memset(sctx->state, 0, sizeof(sctx->state));
sctx->count = 0;
sctx->func = CPACF_KIMD_SHA3_256;
return 0;
}
static int sha3_256_export(struct shash_desc *desc, void *out)
{
struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
struct sha3_state *octx = out;
octx->rsiz = sctx->count;
memcpy(octx->st, sctx->state, sizeof(octx->st));
memcpy(octx->buf, sctx->buf, sizeof(octx->buf));
return 0;
}
static int sha3_256_import(struct shash_desc *desc, const void *in)
{
struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
const struct sha3_state *ictx = in;
sctx->count = ictx->rsiz;
memcpy(sctx->state, ictx->st, sizeof(ictx->st));
memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf));
sctx->func = CPACF_KIMD_SHA3_256;
return 0;
}
static int sha3_224_import(struct shash_desc *desc, const void *in)
{
struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
const struct sha3_state *ictx = in;
sctx->count = ictx->rsiz;
memcpy(sctx->state, ictx->st, sizeof(ictx->st));
memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf));
sctx->func = CPACF_KIMD_SHA3_224;
return 0;
}
static struct shash_alg sha3_256_alg = {
.digestsize = SHA3_256_DIGEST_SIZE, /* = 32 */
.init = sha3_256_init,
.update = s390_sha_update,
.final = s390_sha_final,
.export = sha3_256_export,
.import = sha3_256_import,
.descsize = sizeof(struct s390_sha_ctx),
.statesize = sizeof(struct sha3_state),
.base = {
.cra_name = "sha3-256",
.cra_driver_name = "sha3-256-s390",
.cra_priority = 300,
.cra_blocksize = SHA3_256_BLOCK_SIZE,
.cra_module = THIS_MODULE,
}
};
static int sha3_224_init(struct shash_desc *desc)
{
struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
memset(sctx->state, 0, sizeof(sctx->state));
sctx->count = 0;
sctx->func = CPACF_KIMD_SHA3_224;
return 0;
}
static struct shash_alg sha3_224_alg = {
.digestsize = SHA3_224_DIGEST_SIZE,
.init = sha3_224_init,
.update = s390_sha_update,
.final = s390_sha_final,
.export = sha3_256_export, /* same as for 256 */
.import = sha3_224_import, /* function code different! */
.descsize = sizeof(struct s390_sha_ctx),
.statesize = sizeof(struct sha3_state),
.base = {
.cra_name = "sha3-224",
.cra_driver_name = "sha3-224-s390",
.cra_priority = 300,
.cra_blocksize = SHA3_224_BLOCK_SIZE,
.cra_module = THIS_MODULE,
}
};
static int __init sha3_256_s390_init(void)
{
int ret;
if (!cpacf_query_func(CPACF_KIMD, CPACF_KIMD_SHA3_256))
return -ENODEV;
ret = crypto_register_shash(&sha3_256_alg);
if (ret < 0)
goto out;
ret = crypto_register_shash(&sha3_224_alg);
if (ret < 0)
crypto_unregister_shash(&sha3_256_alg);
out:
return ret;
}
static void __exit sha3_256_s390_fini(void)
{
crypto_unregister_shash(&sha3_224_alg);
crypto_unregister_shash(&sha3_256_alg);
}
module_cpu_feature_match(MSA, sha3_256_s390_init);
module_exit(sha3_256_s390_fini);
MODULE_ALIAS_CRYPTO("sha3-256");
MODULE_ALIAS_CRYPTO("sha3-224");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("SHA3-256 and SHA3-224 Secure Hash Algorithm");
|
