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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Cryptographic API.
4 *
5 * s390 implementation of the SHA256 and SHA224 Secure Hash Algorithm.
6 *
7 * s390 Version:
8 * Copyright IBM Corp. 2005, 2011
9 * Author(s): Jan Glauber (jang@de.ibm.com)
10 */
11#include <crypto/internal/hash.h>
12#include <linux/init.h>
13#include <linux/module.h>
14#include <linux/cpufeature.h>
15#include <crypto/sha.h>
16#include <asm/cpacf.h>
17
18#include "sha.h"
19
20static int s390_sha256_init(struct shash_desc *desc)
21{
22 struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
23
24 sctx->state[0] = SHA256_H0;
25 sctx->state[1] = SHA256_H1;
26 sctx->state[2] = SHA256_H2;
27 sctx->state[3] = SHA256_H3;
28 sctx->state[4] = SHA256_H4;
29 sctx->state[5] = SHA256_H5;
30 sctx->state[6] = SHA256_H6;
31 sctx->state[7] = SHA256_H7;
32 sctx->count = 0;
33 sctx->func = CPACF_KIMD_SHA_256;
34
35 return 0;
36}
37
38static int sha256_export(struct shash_desc *desc, void *out)
39{
40 struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
41 struct sha256_state *octx = out;
42
43 octx->count = sctx->count;
44 memcpy(octx->state, sctx->state, sizeof(octx->state));
45 memcpy(octx->buf, sctx->buf, sizeof(octx->buf));
46 return 0;
47}
48
49static int sha256_import(struct shash_desc *desc, const void *in)
50{
51 struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
52 const struct sha256_state *ictx = in;
53
54 sctx->count = ictx->count;
55 memcpy(sctx->state, ictx->state, sizeof(ictx->state));
56 memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf));
57 sctx->func = CPACF_KIMD_SHA_256;
58 return 0;
59}
60
61static struct shash_alg sha256_alg = {
62 .digestsize = SHA256_DIGEST_SIZE,
63 .init = s390_sha256_init,
64 .update = s390_sha_update,
65 .final = s390_sha_final,
66 .export = sha256_export,
67 .import = sha256_import,
68 .descsize = sizeof(struct s390_sha_ctx),
69 .statesize = sizeof(struct sha256_state),
70 .base = {
71 .cra_name = "sha256",
72 .cra_driver_name= "sha256-s390",
73 .cra_priority = 300,
74 .cra_blocksize = SHA256_BLOCK_SIZE,
75 .cra_module = THIS_MODULE,
76 }
77};
78
79static int s390_sha224_init(struct shash_desc *desc)
80{
81 struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
82
83 sctx->state[0] = SHA224_H0;
84 sctx->state[1] = SHA224_H1;
85 sctx->state[2] = SHA224_H2;
86 sctx->state[3] = SHA224_H3;
87 sctx->state[4] = SHA224_H4;
88 sctx->state[5] = SHA224_H5;
89 sctx->state[6] = SHA224_H6;
90 sctx->state[7] = SHA224_H7;
91 sctx->count = 0;
92 sctx->func = CPACF_KIMD_SHA_256;
93
94 return 0;
95}
96
97static struct shash_alg sha224_alg = {
98 .digestsize = SHA224_DIGEST_SIZE,
99 .init = s390_sha224_init,
100 .update = s390_sha_update,
101 .final = s390_sha_final,
102 .export = sha256_export,
103 .import = sha256_import,
104 .descsize = sizeof(struct s390_sha_ctx),
105 .statesize = sizeof(struct sha256_state),
106 .base = {
107 .cra_name = "sha224",
108 .cra_driver_name= "sha224-s390",
109 .cra_priority = 300,
110 .cra_blocksize = SHA224_BLOCK_SIZE,
111 .cra_module = THIS_MODULE,
112 }
113};
114
115static int __init sha256_s390_init(void)
116{
117 int ret;
118
119 if (!cpacf_query_func(CPACF_KIMD, CPACF_KIMD_SHA_256))
120 return -ENODEV;
121 ret = crypto_register_shash(&sha256_alg);
122 if (ret < 0)
123 goto out;
124 ret = crypto_register_shash(&sha224_alg);
125 if (ret < 0)
126 crypto_unregister_shash(&sha256_alg);
127out:
128 return ret;
129}
130
131static void __exit sha256_s390_fini(void)
132{
133 crypto_unregister_shash(&sha224_alg);
134 crypto_unregister_shash(&sha256_alg);
135}
136
137module_cpu_feature_match(MSA, sha256_s390_init);
138module_exit(sha256_s390_fini);
139
140MODULE_ALIAS_CRYPTO("sha256");
141MODULE_ALIAS_CRYPTO("sha224");
142MODULE_LICENSE("GPL");
143MODULE_DESCRIPTION("SHA256 and SHA224 Secure Hash Algorithm");
1/*
2 * Cryptographic API.
3 *
4 * s390 implementation of the SHA256 and SHA224 Secure Hash Algorithm.
5 *
6 * s390 Version:
7 * Copyright IBM Corp. 2005, 2011
8 * Author(s): Jan Glauber (jang@de.ibm.com)
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the Free
12 * Software Foundation; either version 2 of the License, or (at your option)
13 * any later version.
14 *
15 */
16#include <crypto/internal/hash.h>
17#include <linux/init.h>
18#include <linux/module.h>
19#include <crypto/sha.h>
20
21#include "crypt_s390.h"
22#include "sha.h"
23
24static int sha256_init(struct shash_desc *desc)
25{
26 struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
27
28 sctx->state[0] = SHA256_H0;
29 sctx->state[1] = SHA256_H1;
30 sctx->state[2] = SHA256_H2;
31 sctx->state[3] = SHA256_H3;
32 sctx->state[4] = SHA256_H4;
33 sctx->state[5] = SHA256_H5;
34 sctx->state[6] = SHA256_H6;
35 sctx->state[7] = SHA256_H7;
36 sctx->count = 0;
37 sctx->func = KIMD_SHA_256;
38
39 return 0;
40}
41
42static int sha256_export(struct shash_desc *desc, void *out)
43{
44 struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
45 struct sha256_state *octx = out;
46
47 octx->count = sctx->count;
48 memcpy(octx->state, sctx->state, sizeof(octx->state));
49 memcpy(octx->buf, sctx->buf, sizeof(octx->buf));
50 return 0;
51}
52
53static int sha256_import(struct shash_desc *desc, const void *in)
54{
55 struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
56 const struct sha256_state *ictx = in;
57
58 sctx->count = ictx->count;
59 memcpy(sctx->state, ictx->state, sizeof(ictx->state));
60 memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf));
61 sctx->func = KIMD_SHA_256;
62 return 0;
63}
64
65static struct shash_alg sha256_alg = {
66 .digestsize = SHA256_DIGEST_SIZE,
67 .init = sha256_init,
68 .update = s390_sha_update,
69 .final = s390_sha_final,
70 .export = sha256_export,
71 .import = sha256_import,
72 .descsize = sizeof(struct s390_sha_ctx),
73 .statesize = sizeof(struct sha256_state),
74 .base = {
75 .cra_name = "sha256",
76 .cra_driver_name= "sha256-s390",
77 .cra_priority = CRYPT_S390_PRIORITY,
78 .cra_flags = CRYPTO_ALG_TYPE_SHASH,
79 .cra_blocksize = SHA256_BLOCK_SIZE,
80 .cra_module = THIS_MODULE,
81 }
82};
83
84static int sha224_init(struct shash_desc *desc)
85{
86 struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
87
88 sctx->state[0] = SHA224_H0;
89 sctx->state[1] = SHA224_H1;
90 sctx->state[2] = SHA224_H2;
91 sctx->state[3] = SHA224_H3;
92 sctx->state[4] = SHA224_H4;
93 sctx->state[5] = SHA224_H5;
94 sctx->state[6] = SHA224_H6;
95 sctx->state[7] = SHA224_H7;
96 sctx->count = 0;
97 sctx->func = KIMD_SHA_256;
98
99 return 0;
100}
101
102static struct shash_alg sha224_alg = {
103 .digestsize = SHA224_DIGEST_SIZE,
104 .init = sha224_init,
105 .update = s390_sha_update,
106 .final = s390_sha_final,
107 .export = sha256_export,
108 .import = sha256_import,
109 .descsize = sizeof(struct s390_sha_ctx),
110 .statesize = sizeof(struct sha256_state),
111 .base = {
112 .cra_name = "sha224",
113 .cra_driver_name= "sha224-s390",
114 .cra_priority = CRYPT_S390_PRIORITY,
115 .cra_flags = CRYPTO_ALG_TYPE_SHASH,
116 .cra_blocksize = SHA224_BLOCK_SIZE,
117 .cra_module = THIS_MODULE,
118 }
119};
120
121static int __init sha256_s390_init(void)
122{
123 int ret;
124
125 if (!crypt_s390_func_available(KIMD_SHA_256, CRYPT_S390_MSA))
126 return -EOPNOTSUPP;
127 ret = crypto_register_shash(&sha256_alg);
128 if (ret < 0)
129 goto out;
130 ret = crypto_register_shash(&sha224_alg);
131 if (ret < 0)
132 crypto_unregister_shash(&sha256_alg);
133out:
134 return ret;
135}
136
137static void __exit sha256_s390_fini(void)
138{
139 crypto_unregister_shash(&sha224_alg);
140 crypto_unregister_shash(&sha256_alg);
141}
142
143module_init(sha256_s390_init);
144module_exit(sha256_s390_fini);
145
146MODULE_ALIAS("sha256");
147MODULE_ALIAS("sha224");
148MODULE_LICENSE("GPL");
149MODULE_DESCRIPTION("SHA256 and SHA224 Secure Hash Algorithm");