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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
08c327f6 | 3 | * Crypto API wrapper for the generic SHA256 code from lib/crypto/sha256.c |
1da177e4 LT |
4 | * |
5 | * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com> | |
6 | * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk> | |
7 | * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> | |
cd12fb90 | 8 | * SHA224 Support Copyright 2007 Intel Corporation <jonathan.lynch@intel.com> |
1da177e4 | 9 | */ |
50e109b5 | 10 | #include <crypto/internal/hash.h> |
1da177e4 LT |
11 | #include <linux/init.h> |
12 | #include <linux/module.h> | |
13 | #include <linux/mm.h> | |
06ace7a9 | 14 | #include <linux/types.h> |
5265eeb2 | 15 | #include <crypto/sha.h> |
a2e5ba4f | 16 | #include <crypto/sha256_base.h> |
1da177e4 | 17 | #include <asm/byteorder.h> |
be34c4ef | 18 | #include <asm/unaligned.h> |
1da177e4 | 19 | |
0c4c78de LC |
20 | const u8 sha224_zero_message_hash[SHA224_DIGEST_SIZE] = { |
21 | 0xd1, 0x4a, 0x02, 0x8c, 0x2a, 0x3a, 0x2b, 0xc9, 0x47, | |
22 | 0x61, 0x02, 0xbb, 0x28, 0x82, 0x34, 0xc4, 0x15, 0xa2, | |
23 | 0xb0, 0x1f, 0x82, 0x8e, 0xa6, 0x2a, 0xc5, 0xb3, 0xe4, | |
24 | 0x2f | |
25 | }; | |
26 | EXPORT_SYMBOL_GPL(sha224_zero_message_hash); | |
27 | ||
28 | const u8 sha256_zero_message_hash[SHA256_DIGEST_SIZE] = { | |
29 | 0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14, | |
30 | 0x9a, 0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0xb9, 0x24, | |
31 | 0x27, 0xae, 0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c, | |
32 | 0xa4, 0x95, 0x99, 0x1b, 0x78, 0x52, 0xb8, 0x55 | |
33 | }; | |
34 | EXPORT_SYMBOL_GPL(sha256_zero_message_hash); | |
35 | ||
08c327f6 | 36 | static int crypto_sha256_init(struct shash_desc *desc) |
1da177e4 | 37 | { |
08c327f6 | 38 | return sha256_init(shash_desc_ctx(desc)); |
1da177e4 LT |
39 | } |
40 | ||
08c327f6 | 41 | static int crypto_sha224_init(struct shash_desc *desc) |
1da177e4 | 42 | { |
08c327f6 | 43 | return sha224_init(shash_desc_ctx(desc)); |
1da177e4 LT |
44 | } |
45 | ||
35d2c9d0 | 46 | int crypto_sha256_update(struct shash_desc *desc, const u8 *data, |
6c2bb98b | 47 | unsigned int len) |
1da177e4 | 48 | { |
08c327f6 | 49 | return sha256_update(shash_desc_ctx(desc), data, len); |
1da177e4 | 50 | } |
35d2c9d0 | 51 | EXPORT_SYMBOL(crypto_sha256_update); |
1da177e4 | 52 | |
08c327f6 | 53 | static int crypto_sha256_final(struct shash_desc *desc, u8 *out) |
1da177e4 | 54 | { |
08c327f6 HG |
55 | if (crypto_shash_digestsize(desc->tfm) == SHA224_DIGEST_SIZE) |
56 | return sha224_final(shash_desc_ctx(desc), out); | |
57 | else | |
58 | return sha256_final(shash_desc_ctx(desc), out); | |
1da177e4 LT |
59 | } |
60 | ||
a2e5ba4f AB |
61 | int crypto_sha256_finup(struct shash_desc *desc, const u8 *data, |
62 | unsigned int len, u8 *hash) | |
cd12fb90 | 63 | { |
08c327f6 HG |
64 | sha256_update(shash_desc_ctx(desc), data, len); |
65 | return crypto_sha256_final(desc, hash); | |
9b2fda7b | 66 | } |
a2e5ba4f | 67 | EXPORT_SYMBOL(crypto_sha256_finup); |
9b2fda7b | 68 | |
6aeb49bc | 69 | static struct shash_alg sha256_algs[2] = { { |
50e109b5 | 70 | .digestsize = SHA256_DIGEST_SIZE, |
08c327f6 | 71 | .init = crypto_sha256_init, |
35d2c9d0 | 72 | .update = crypto_sha256_update, |
08c327f6 | 73 | .final = crypto_sha256_final, |
a2e5ba4f | 74 | .finup = crypto_sha256_finup, |
9b2fda7b | 75 | .descsize = sizeof(struct sha256_state), |
50e109b5 AKR |
76 | .base = { |
77 | .cra_name = "sha256", | |
78 | .cra_driver_name= "sha256-generic", | |
b73b7ac0 | 79 | .cra_priority = 100, |
50e109b5 AKR |
80 | .cra_blocksize = SHA256_BLOCK_SIZE, |
81 | .cra_module = THIS_MODULE, | |
82 | } | |
6aeb49bc | 83 | }, { |
50e109b5 | 84 | .digestsize = SHA224_DIGEST_SIZE, |
08c327f6 | 85 | .init = crypto_sha224_init, |
35d2c9d0 | 86 | .update = crypto_sha256_update, |
08c327f6 | 87 | .final = crypto_sha256_final, |
a2e5ba4f | 88 | .finup = crypto_sha256_finup, |
9b2fda7b | 89 | .descsize = sizeof(struct sha256_state), |
50e109b5 AKR |
90 | .base = { |
91 | .cra_name = "sha224", | |
92 | .cra_driver_name= "sha224-generic", | |
b73b7ac0 | 93 | .cra_priority = 100, |
50e109b5 AKR |
94 | .cra_blocksize = SHA224_BLOCK_SIZE, |
95 | .cra_module = THIS_MODULE, | |
96 | } | |
6aeb49bc | 97 | } }; |
1da177e4 | 98 | |
3af5b90b | 99 | static int __init sha256_generic_mod_init(void) |
1da177e4 | 100 | { |
6aeb49bc | 101 | return crypto_register_shashes(sha256_algs, ARRAY_SIZE(sha256_algs)); |
1da177e4 LT |
102 | } |
103 | ||
3af5b90b | 104 | static void __exit sha256_generic_mod_fini(void) |
1da177e4 | 105 | { |
6aeb49bc | 106 | crypto_unregister_shashes(sha256_algs, ARRAY_SIZE(sha256_algs)); |
1da177e4 LT |
107 | } |
108 | ||
c4741b23 | 109 | subsys_initcall(sha256_generic_mod_init); |
3af5b90b | 110 | module_exit(sha256_generic_mod_fini); |
1da177e4 LT |
111 | |
112 | MODULE_LICENSE("GPL"); | |
cd12fb90 | 113 | MODULE_DESCRIPTION("SHA-224 and SHA-256 Secure Hash Algorithm"); |
b3be9a6d | 114 | |
5d26a105 | 115 | MODULE_ALIAS_CRYPTO("sha224"); |
3e14dcf7 | 116 | MODULE_ALIAS_CRYPTO("sha224-generic"); |
5d26a105 | 117 | MODULE_ALIAS_CRYPTO("sha256"); |
3e14dcf7 | 118 | MODULE_ALIAS_CRYPTO("sha256-generic"); |