Commit | Line | Data |
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291dc7c0 JG |
1 | /* |
2 | * Cryptographic API. | |
3 | * | |
4e2c6d7f | 4 | * s390 implementation of the SHA512 and SHA38 Secure Hash Algorithm. |
291dc7c0 JG |
5 | * |
6 | * Copyright IBM Corp. 2007 | |
7 | * Author(s): Jan Glauber (jang@de.ibm.com) | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License as published by the Free | |
11 | * Software Foundation; either version 2 of the License, or (at your option) | |
12 | * any later version. | |
13 | * | |
14 | */ | |
563f346d | 15 | #include <crypto/internal/hash.h> |
9fadfd1a HX |
16 | #include <crypto/sha.h> |
17 | #include <linux/errno.h> | |
291dc7c0 | 18 | #include <linux/init.h> |
9fadfd1a | 19 | #include <linux/kernel.h> |
291dc7c0 | 20 | #include <linux/module.h> |
d05377c1 | 21 | #include <linux/cpufeature.h> |
c7d4d259 | 22 | #include <asm/cpacf.h> |
291dc7c0 JG |
23 | |
24 | #include "sha.h" | |
291dc7c0 | 25 | |
563f346d | 26 | static int sha512_init(struct shash_desc *desc) |
291dc7c0 | 27 | { |
563f346d | 28 | struct s390_sha_ctx *ctx = shash_desc_ctx(desc); |
291dc7c0 JG |
29 | |
30 | *(__u64 *)&ctx->state[0] = 0x6a09e667f3bcc908ULL; | |
31 | *(__u64 *)&ctx->state[2] = 0xbb67ae8584caa73bULL; | |
32 | *(__u64 *)&ctx->state[4] = 0x3c6ef372fe94f82bULL; | |
33 | *(__u64 *)&ctx->state[6] = 0xa54ff53a5f1d36f1ULL; | |
34 | *(__u64 *)&ctx->state[8] = 0x510e527fade682d1ULL; | |
35 | *(__u64 *)&ctx->state[10] = 0x9b05688c2b3e6c1fULL; | |
36 | *(__u64 *)&ctx->state[12] = 0x1f83d9abfb41bd6bULL; | |
37 | *(__u64 *)&ctx->state[14] = 0x5be0cd19137e2179ULL; | |
38 | ctx->count = 0; | |
c7d4d259 | 39 | ctx->func = CPACF_KIMD_SHA_512; |
563f346d HX |
40 | |
41 | return 0; | |
291dc7c0 JG |
42 | } |
43 | ||
9fadfd1a HX |
44 | static int sha512_export(struct shash_desc *desc, void *out) |
45 | { | |
46 | struct s390_sha_ctx *sctx = shash_desc_ctx(desc); | |
47 | struct sha512_state *octx = out; | |
48 | ||
49 | octx->count[0] = sctx->count; | |
50 | octx->count[1] = 0; | |
51 | memcpy(octx->state, sctx->state, sizeof(octx->state)); | |
52 | memcpy(octx->buf, sctx->buf, sizeof(octx->buf)); | |
53 | return 0; | |
54 | } | |
55 | ||
81bd5f6c | 56 | static int sha512_import(struct shash_desc *desc, const void *in) |
9fadfd1a HX |
57 | { |
58 | struct s390_sha_ctx *sctx = shash_desc_ctx(desc); | |
81bd5f6c | 59 | const struct sha512_state *ictx = in; |
9fadfd1a HX |
60 | |
61 | if (unlikely(ictx->count[1])) | |
62 | return -ERANGE; | |
63 | sctx->count = ictx->count[0]; | |
64 | ||
65 | memcpy(sctx->state, ictx->state, sizeof(ictx->state)); | |
66 | memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf)); | |
c7d4d259 | 67 | sctx->func = CPACF_KIMD_SHA_512; |
9fadfd1a HX |
68 | return 0; |
69 | } | |
70 | ||
563f346d HX |
71 | static struct shash_alg sha512_alg = { |
72 | .digestsize = SHA512_DIGEST_SIZE, | |
73 | .init = sha512_init, | |
74 | .update = s390_sha_update, | |
75 | .final = s390_sha_final, | |
9fadfd1a HX |
76 | .export = sha512_export, |
77 | .import = sha512_import, | |
563f346d | 78 | .descsize = sizeof(struct s390_sha_ctx), |
9fadfd1a | 79 | .statesize = sizeof(struct sha512_state), |
563f346d HX |
80 | .base = { |
81 | .cra_name = "sha512", | |
82 | .cra_driver_name= "sha512-s390", | |
c7d4d259 | 83 | .cra_priority = 300, |
563f346d HX |
84 | .cra_flags = CRYPTO_ALG_TYPE_SHASH, |
85 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
86 | .cra_module = THIS_MODULE, | |
87 | } | |
291dc7c0 JG |
88 | }; |
89 | ||
5d26a105 | 90 | MODULE_ALIAS_CRYPTO("sha512"); |
4e2c6d7f | 91 | |
563f346d | 92 | static int sha384_init(struct shash_desc *desc) |
4e2c6d7f | 93 | { |
563f346d | 94 | struct s390_sha_ctx *ctx = shash_desc_ctx(desc); |
4e2c6d7f JG |
95 | |
96 | *(__u64 *)&ctx->state[0] = 0xcbbb9d5dc1059ed8ULL; | |
97 | *(__u64 *)&ctx->state[2] = 0x629a292a367cd507ULL; | |
98 | *(__u64 *)&ctx->state[4] = 0x9159015a3070dd17ULL; | |
99 | *(__u64 *)&ctx->state[6] = 0x152fecd8f70e5939ULL; | |
100 | *(__u64 *)&ctx->state[8] = 0x67332667ffc00b31ULL; | |
101 | *(__u64 *)&ctx->state[10] = 0x8eb44a8768581511ULL; | |
102 | *(__u64 *)&ctx->state[12] = 0xdb0c2e0d64f98fa7ULL; | |
103 | *(__u64 *)&ctx->state[14] = 0x47b5481dbefa4fa4ULL; | |
104 | ctx->count = 0; | |
c7d4d259 | 105 | ctx->func = CPACF_KIMD_SHA_512; |
563f346d HX |
106 | |
107 | return 0; | |
4e2c6d7f JG |
108 | } |
109 | ||
563f346d HX |
110 | static struct shash_alg sha384_alg = { |
111 | .digestsize = SHA384_DIGEST_SIZE, | |
112 | .init = sha384_init, | |
113 | .update = s390_sha_update, | |
114 | .final = s390_sha_final, | |
9fadfd1a HX |
115 | .export = sha512_export, |
116 | .import = sha512_import, | |
563f346d | 117 | .descsize = sizeof(struct s390_sha_ctx), |
9fadfd1a | 118 | .statesize = sizeof(struct sha512_state), |
563f346d HX |
119 | .base = { |
120 | .cra_name = "sha384", | |
121 | .cra_driver_name= "sha384-s390", | |
c7d4d259 | 122 | .cra_priority = 300, |
563f346d | 123 | .cra_flags = CRYPTO_ALG_TYPE_SHASH, |
949abe57 | 124 | .cra_blocksize = SHA384_BLOCK_SIZE, |
563f346d HX |
125 | .cra_ctxsize = sizeof(struct s390_sha_ctx), |
126 | .cra_module = THIS_MODULE, | |
127 | } | |
4e2c6d7f JG |
128 | }; |
129 | ||
5d26a105 | 130 | MODULE_ALIAS_CRYPTO("sha384"); |
4e2c6d7f | 131 | |
291dc7c0 JG |
132 | static int __init init(void) |
133 | { | |
4e2c6d7f JG |
134 | int ret; |
135 | ||
69c0e360 | 136 | if (!cpacf_query_func(CPACF_KIMD, CPACF_KIMD_SHA_512)) |
291dc7c0 | 137 | return -EOPNOTSUPP; |
563f346d | 138 | if ((ret = crypto_register_shash(&sha512_alg)) < 0) |
4e2c6d7f | 139 | goto out; |
563f346d HX |
140 | if ((ret = crypto_register_shash(&sha384_alg)) < 0) |
141 | crypto_unregister_shash(&sha512_alg); | |
4e2c6d7f JG |
142 | out: |
143 | return ret; | |
291dc7c0 JG |
144 | } |
145 | ||
146 | static void __exit fini(void) | |
147 | { | |
563f346d HX |
148 | crypto_unregister_shash(&sha512_alg); |
149 | crypto_unregister_shash(&sha384_alg); | |
291dc7c0 JG |
150 | } |
151 | ||
d05377c1 | 152 | module_cpu_feature_match(MSA, init); |
291dc7c0 JG |
153 | module_exit(fini); |
154 | ||
291dc7c0 | 155 | MODULE_LICENSE("GPL"); |
4e2c6d7f | 156 | MODULE_DESCRIPTION("SHA512 and SHA-384 Secure Hash Algorithm"); |