tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Cryptographic API.
3 *
4 * s390 implementation of the SHA512 and SHA38 Secure Hash Algorithm.
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 */
15#include <crypto/internal/hash.h>
16#include <linux/init.h>
17#include <linux/module.h>
18
19#include "sha.h"
20#include "crypt_s390.h"
21
22static int sha512_init(struct shash_desc *desc)
23{
24 struct s390_sha_ctx *ctx = shash_desc_ctx(desc);
25
26 *(__u64 *)&ctx->state[0] = 0x6a09e667f3bcc908ULL;
27 *(__u64 *)&ctx->state[2] = 0xbb67ae8584caa73bULL;
28 *(__u64 *)&ctx->state[4] = 0x3c6ef372fe94f82bULL;
29 *(__u64 *)&ctx->state[6] = 0xa54ff53a5f1d36f1ULL;
30 *(__u64 *)&ctx->state[8] = 0x510e527fade682d1ULL;
31 *(__u64 *)&ctx->state[10] = 0x9b05688c2b3e6c1fULL;
32 *(__u64 *)&ctx->state[12] = 0x1f83d9abfb41bd6bULL;
33 *(__u64 *)&ctx->state[14] = 0x5be0cd19137e2179ULL;
34 ctx->count = 0;
35 ctx->func = KIMD_SHA_512;
36
37 return 0;
38}
39
40static struct shash_alg sha512_alg = {
41 .digestsize = SHA512_DIGEST_SIZE,
42 .init = sha512_init,
43 .update = s390_sha_update,
44 .final = s390_sha_final,
45 .descsize = sizeof(struct s390_sha_ctx),
46 .base = {
47 .cra_name = "sha512",
48 .cra_driver_name= "sha512-s390",
49 .cra_priority = CRYPT_S390_PRIORITY,
50 .cra_flags = CRYPTO_ALG_TYPE_SHASH,
51 .cra_blocksize = SHA512_BLOCK_SIZE,
52 .cra_module = THIS_MODULE,
53 }
54};
55
56MODULE_ALIAS("sha512");
57
58static int sha384_init(struct shash_desc *desc)
59{
60 struct s390_sha_ctx *ctx = shash_desc_ctx(desc);
61
62 *(__u64 *)&ctx->state[0] = 0xcbbb9d5dc1059ed8ULL;
63 *(__u64 *)&ctx->state[2] = 0x629a292a367cd507ULL;
64 *(__u64 *)&ctx->state[4] = 0x9159015a3070dd17ULL;
65 *(__u64 *)&ctx->state[6] = 0x152fecd8f70e5939ULL;
66 *(__u64 *)&ctx->state[8] = 0x67332667ffc00b31ULL;
67 *(__u64 *)&ctx->state[10] = 0x8eb44a8768581511ULL;
68 *(__u64 *)&ctx->state[12] = 0xdb0c2e0d64f98fa7ULL;
69 *(__u64 *)&ctx->state[14] = 0x47b5481dbefa4fa4ULL;
70 ctx->count = 0;
71 ctx->func = KIMD_SHA_512;
72
73 return 0;
74}
75
76static struct shash_alg sha384_alg = {
77 .digestsize = SHA384_DIGEST_SIZE,
78 .init = sha384_init,
79 .update = s390_sha_update,
80 .final = s390_sha_final,
81 .descsize = sizeof(struct s390_sha_ctx),
82 .base = {
83 .cra_name = "sha384",
84 .cra_driver_name= "sha384-s390",
85 .cra_priority = CRYPT_S390_PRIORITY,
86 .cra_flags = CRYPTO_ALG_TYPE_SHASH,
87 .cra_blocksize = SHA384_BLOCK_SIZE,
88 .cra_ctxsize = sizeof(struct s390_sha_ctx),
89 .cra_module = THIS_MODULE,
90 }
91};
92
93MODULE_ALIAS("sha384");
94
95static int __init init(void)
96{
97 int ret;
98
99 if (!crypt_s390_func_available(KIMD_SHA_512))
100 return -EOPNOTSUPP;
101 if ((ret = crypto_register_shash(&sha512_alg)) < 0)
102 goto out;
103 if ((ret = crypto_register_shash(&sha384_alg)) < 0)
104 crypto_unregister_shash(&sha512_alg);
105out:
106 return ret;
107}
108
109static void __exit fini(void)
110{
111 crypto_unregister_shash(&sha512_alg);
112 crypto_unregister_shash(&sha384_alg);
113}
114
115module_init(init);
116module_exit(fini);
117
118MODULE_LICENSE("GPL");
119MODULE_DESCRIPTION("SHA512 and SHA-384 Secure Hash Algorithm");