Commit | Line | Data |
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0a497c17 JG |
1 | /* |
2 | * Cryptographic API. | |
3 | * | |
4 | * s390 implementation of the SHA256 Secure Hash Algorithm. | |
5 | * | |
6 | * s390 Version: | |
86aa9fc2 | 7 | * Copyright IBM Corp. 2005,2007 |
0a497c17 JG |
8 | * Author(s): Jan Glauber (jang@de.ibm.com) |
9 | * | |
ad5d2789 | 10 | * Derived from "crypto/sha256_generic.c" |
0a497c17 JG |
11 | * and "arch/s390/crypto/sha1_s390.c" |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify it | |
14 | * under the terms of the GNU General Public License as published by the Free | |
15 | * Software Foundation; either version 2 of the License, or (at your option) | |
16 | * any later version. | |
17 | * | |
18 | */ | |
19 | #include <linux/init.h> | |
20 | #include <linux/module.h> | |
21 | #include <linux/crypto.h> | |
5265eeb2 | 22 | #include <crypto/sha.h> |
0a497c17 JG |
23 | |
24 | #include "crypt_s390.h" | |
604973f1 | 25 | #include "sha.h" |
0a497c17 | 26 | |
6c2bb98b | 27 | static void sha256_init(struct crypto_tfm *tfm) |
0a497c17 | 28 | { |
604973f1 | 29 | struct s390_sha_ctx *sctx = crypto_tfm_ctx(tfm); |
0a497c17 | 30 | |
5265eeb2 JG |
31 | sctx->state[0] = SHA256_H0; |
32 | sctx->state[1] = SHA256_H1; | |
33 | sctx->state[2] = SHA256_H2; | |
34 | sctx->state[3] = SHA256_H3; | |
35 | sctx->state[4] = SHA256_H4; | |
36 | sctx->state[5] = SHA256_H5; | |
37 | sctx->state[6] = SHA256_H6; | |
38 | sctx->state[7] = SHA256_H7; | |
0a497c17 | 39 | sctx->count = 0; |
604973f1 | 40 | sctx->func = KIMD_SHA_256; |
0a497c17 JG |
41 | } |
42 | ||
43 | static struct crypto_alg alg = { | |
44 | .cra_name = "sha256", | |
65b75c36 HX |
45 | .cra_driver_name = "sha256-s390", |
46 | .cra_priority = CRYPT_S390_PRIORITY, | |
0a497c17 JG |
47 | .cra_flags = CRYPTO_ALG_TYPE_DIGEST, |
48 | .cra_blocksize = SHA256_BLOCK_SIZE, | |
604973f1 | 49 | .cra_ctxsize = sizeof(struct s390_sha_ctx), |
0a497c17 JG |
50 | .cra_module = THIS_MODULE, |
51 | .cra_list = LIST_HEAD_INIT(alg.cra_list), | |
52 | .cra_u = { .digest = { | |
53 | .dia_digestsize = SHA256_DIGEST_SIZE, | |
7ffbc9da | 54 | .dia_init = sha256_init, |
604973f1 JG |
55 | .dia_update = s390_sha_update, |
56 | .dia_final = s390_sha_final } } | |
0a497c17 JG |
57 | }; |
58 | ||
9f7819c1 | 59 | static int sha256_s390_init(void) |
0a497c17 | 60 | { |
0a497c17 | 61 | if (!crypt_s390_func_available(KIMD_SHA_256)) |
86aa9fc2 | 62 | return -EOPNOTSUPP; |
0a497c17 | 63 | |
86aa9fc2 | 64 | return crypto_register_alg(&alg); |
0a497c17 JG |
65 | } |
66 | ||
9f7819c1 | 67 | static void __exit sha256_s390_fini(void) |
0a497c17 JG |
68 | { |
69 | crypto_unregister_alg(&alg); | |
70 | } | |
71 | ||
9f7819c1 HC |
72 | module_init(sha256_s390_init); |
73 | module_exit(sha256_s390_fini); | |
0a497c17 JG |
74 | |
75 | MODULE_ALIAS("sha256"); | |
0a497c17 JG |
76 | MODULE_LICENSE("GPL"); |
77 | MODULE_DESCRIPTION("SHA256 Secure Hash Algorithm"); |