Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Cryptographic API. |
| 3 | * |
| 4 | * s390 implementation of the SHA256 Secure Hash Algorithm. |
| 5 | * |
| 6 | * s390 Version: |
Jan Glauber | 86aa9fc | 2007-02-05 21:18:14 +0100 | [diff] [blame] | 7 | * Copyright IBM Corp. 2005,2007 |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 8 | * Author(s): Jan Glauber (jang@de.ibm.com) |
| 9 | * |
Sebastian Siewior | ad5d278 | 2007-10-08 11:45:10 +0800 | [diff] [blame] | 10 | * Derived from "crypto/sha256_generic.c" |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 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 | */ |
Herbert Xu | 563f346 | 2009-01-18 20:33:33 +1100 | [diff] [blame] | 19 | #include <crypto/internal/hash.h> |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 20 | #include <linux/init.h> |
| 21 | #include <linux/module.h> |
Jan Glauber | 5265eeb | 2007-10-09 22:43:13 +0800 | [diff] [blame] | 22 | #include <crypto/sha.h> |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 23 | |
| 24 | #include "crypt_s390.h" |
Jan Glauber | 604973f | 2008-03-06 19:50:20 +0800 | [diff] [blame] | 25 | #include "sha.h" |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 26 | |
Herbert Xu | 563f346 | 2009-01-18 20:33:33 +1100 | [diff] [blame] | 27 | static int sha256_init(struct shash_desc *desc) |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 28 | { |
Herbert Xu | 563f346 | 2009-01-18 20:33:33 +1100 | [diff] [blame] | 29 | struct s390_sha_ctx *sctx = shash_desc_ctx(desc); |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 30 | |
Jan Glauber | 5265eeb | 2007-10-09 22:43:13 +0800 | [diff] [blame] | 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; |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 39 | sctx->count = 0; |
Jan Glauber | 604973f | 2008-03-06 19:50:20 +0800 | [diff] [blame] | 40 | sctx->func = KIMD_SHA_256; |
Herbert Xu | 563f346 | 2009-01-18 20:33:33 +1100 | [diff] [blame] | 41 | |
| 42 | return 0; |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 43 | } |
| 44 | |
Herbert Xu | f63559b | 2009-07-10 13:20:32 +0800 | [diff] [blame] | 45 | static int sha256_export(struct shash_desc *desc, void *out) |
| 46 | { |
| 47 | struct s390_sha_ctx *sctx = shash_desc_ctx(desc); |
| 48 | struct sha256_state *octx = out; |
| 49 | |
| 50 | octx->count = sctx->count; |
| 51 | memcpy(octx->state, sctx->state, sizeof(octx->state)); |
| 52 | memcpy(octx->buf, sctx->buf, sizeof(octx->buf)); |
| 53 | return 0; |
| 54 | } |
| 55 | |
Jan Glauber | 81bd5f6 | 2009-09-05 16:27:35 +1000 | [diff] [blame] | 56 | static int sha256_import(struct shash_desc *desc, const void *in) |
Herbert Xu | f63559b | 2009-07-10 13:20:32 +0800 | [diff] [blame] | 57 | { |
Sachin Sant | 2a549c3 | 2009-07-16 19:58:42 +0800 | [diff] [blame] | 58 | struct s390_sha_ctx *sctx = shash_desc_ctx(desc); |
Jan Glauber | 81bd5f6 | 2009-09-05 16:27:35 +1000 | [diff] [blame] | 59 | const struct sha256_state *ictx = in; |
Herbert Xu | f63559b | 2009-07-10 13:20:32 +0800 | [diff] [blame] | 60 | |
| 61 | sctx->count = ictx->count; |
| 62 | memcpy(sctx->state, ictx->state, sizeof(ictx->state)); |
| 63 | memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf)); |
| 64 | sctx->func = KIMD_SHA_256; |
| 65 | return 0; |
| 66 | } |
| 67 | |
Herbert Xu | 563f346 | 2009-01-18 20:33:33 +1100 | [diff] [blame] | 68 | static struct shash_alg alg = { |
| 69 | .digestsize = SHA256_DIGEST_SIZE, |
| 70 | .init = sha256_init, |
| 71 | .update = s390_sha_update, |
| 72 | .final = s390_sha_final, |
Herbert Xu | f63559b | 2009-07-10 13:20:32 +0800 | [diff] [blame] | 73 | .export = sha256_export, |
| 74 | .import = sha256_import, |
Herbert Xu | 563f346 | 2009-01-18 20:33:33 +1100 | [diff] [blame] | 75 | .descsize = sizeof(struct s390_sha_ctx), |
Herbert Xu | f63559b | 2009-07-10 13:20:32 +0800 | [diff] [blame] | 76 | .statesize = sizeof(struct sha256_state), |
Herbert Xu | 563f346 | 2009-01-18 20:33:33 +1100 | [diff] [blame] | 77 | .base = { |
| 78 | .cra_name = "sha256", |
| 79 | .cra_driver_name= "sha256-s390", |
| 80 | .cra_priority = CRYPT_S390_PRIORITY, |
| 81 | .cra_flags = CRYPTO_ALG_TYPE_SHASH, |
| 82 | .cra_blocksize = SHA256_BLOCK_SIZE, |
| 83 | .cra_module = THIS_MODULE, |
| 84 | } |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 85 | }; |
| 86 | |
Heiko Carstens | 9f7819c | 2008-04-17 07:46:17 +0200 | [diff] [blame] | 87 | static int sha256_s390_init(void) |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 88 | { |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 89 | if (!crypt_s390_func_available(KIMD_SHA_256)) |
Jan Glauber | 86aa9fc | 2007-02-05 21:18:14 +0100 | [diff] [blame] | 90 | return -EOPNOTSUPP; |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 91 | |
Herbert Xu | 563f346 | 2009-01-18 20:33:33 +1100 | [diff] [blame] | 92 | return crypto_register_shash(&alg); |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 93 | } |
| 94 | |
Heiko Carstens | 9f7819c | 2008-04-17 07:46:17 +0200 | [diff] [blame] | 95 | static void __exit sha256_s390_fini(void) |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 96 | { |
Herbert Xu | 563f346 | 2009-01-18 20:33:33 +1100 | [diff] [blame] | 97 | crypto_unregister_shash(&alg); |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 98 | } |
| 99 | |
Heiko Carstens | 9f7819c | 2008-04-17 07:46:17 +0200 | [diff] [blame] | 100 | module_init(sha256_s390_init); |
| 101 | module_exit(sha256_s390_fini); |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 102 | |
| 103 | MODULE_ALIAS("sha256"); |
Jan Glauber | 0a497c17 | 2006-01-06 00:19:18 -0800 | [diff] [blame] | 104 | MODULE_LICENSE("GPL"); |
| 105 | MODULE_DESCRIPTION("SHA256 Secure Hash Algorithm"); |