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 <linux/init.h>
16 #include <linux/module.h>
17 #include <linux/crypto.h>
18
19 #include "sha.h"
20 #include "crypt_s390.h"
21
sha512_init(struct crypto_tfm * tfm)22 static void sha512_init(struct crypto_tfm *tfm)
23 {
24 struct s390_sha_ctx *ctx = crypto_tfm_ctx(tfm);
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
38 static struct crypto_alg sha512_alg = {
39 .cra_name = "sha512",
40 .cra_driver_name = "sha512-s390",
41 .cra_priority = CRYPT_S390_PRIORITY,
42 .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
43 .cra_blocksize = SHA512_BLOCK_SIZE,
44 .cra_ctxsize = sizeof(struct s390_sha_ctx),
45 .cra_module = THIS_MODULE,
46 .cra_list = LIST_HEAD_INIT(sha512_alg.cra_list),
47 .cra_u = { .digest = {
48 .dia_digestsize = SHA512_DIGEST_SIZE,
49 .dia_init = sha512_init,
50 .dia_update = s390_sha_update,
51 .dia_final = s390_sha_final } }
52 };
53
54 MODULE_ALIAS("sha512");
55
sha384_init(struct crypto_tfm * tfm)56 static void sha384_init(struct crypto_tfm *tfm)
57 {
58 struct s390_sha_ctx *ctx = crypto_tfm_ctx(tfm);
59
60 *(__u64 *)&ctx->state[0] = 0xcbbb9d5dc1059ed8ULL;
61 *(__u64 *)&ctx->state[2] = 0x629a292a367cd507ULL;
62 *(__u64 *)&ctx->state[4] = 0x9159015a3070dd17ULL;
63 *(__u64 *)&ctx->state[6] = 0x152fecd8f70e5939ULL;
64 *(__u64 *)&ctx->state[8] = 0x67332667ffc00b31ULL;
65 *(__u64 *)&ctx->state[10] = 0x8eb44a8768581511ULL;
66 *(__u64 *)&ctx->state[12] = 0xdb0c2e0d64f98fa7ULL;
67 *(__u64 *)&ctx->state[14] = 0x47b5481dbefa4fa4ULL;
68 ctx->count = 0;
69 ctx->func = KIMD_SHA_512;
70 }
71
72 static struct crypto_alg sha384_alg = {
73 .cra_name = "sha384",
74 .cra_driver_name = "sha384-s390",
75 .cra_priority = CRYPT_S390_PRIORITY,
76 .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
77 .cra_blocksize = SHA384_BLOCK_SIZE,
78 .cra_ctxsize = sizeof(struct s390_sha_ctx),
79 .cra_module = THIS_MODULE,
80 .cra_list = LIST_HEAD_INIT(sha384_alg.cra_list),
81 .cra_u = { .digest = {
82 .dia_digestsize = SHA384_DIGEST_SIZE,
83 .dia_init = sha384_init,
84 .dia_update = s390_sha_update,
85 .dia_final = s390_sha_final } }
86 };
87
88 MODULE_ALIAS("sha384");
89
init(void)90 static int __init init(void)
91 {
92 int ret;
93
94 if (!crypt_s390_func_available(KIMD_SHA_512))
95 return -EOPNOTSUPP;
96 if ((ret = crypto_register_alg(&sha512_alg)) < 0)
97 goto out;
98 if ((ret = crypto_register_alg(&sha384_alg)) < 0)
99 crypto_unregister_alg(&sha512_alg);
100 out:
101 return ret;
102 }
103
fini(void)104 static void __exit fini(void)
105 {
106 crypto_unregister_alg(&sha512_alg);
107 crypto_unregister_alg(&sha384_alg);
108 }
109
110 module_init(init);
111 module_exit(fini);
112
113 MODULE_LICENSE("GPL");
114 MODULE_DESCRIPTION("SHA512 and SHA-384 Secure Hash Algorithm");
115