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Linux kernel mirror (for testing)
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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Cryptographic API.
4 * Glue code for the SHA1 Secure Hash Algorithm assembler implementation
5 *
6 * This file is based on sha1_generic.c and sha1_ssse3_glue.c
7 *
8 * Copyright (c) Alan Smithee.
9 * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
10 * Copyright (c) Jean-Francois Dive <jef@linuxbe.org>
11 * Copyright (c) Mathias Krause <minipli@googlemail.com>
12 */
13
14#include <crypto/internal/hash.h>
15#include <crypto/sha1.h>
16#include <crypto/sha1_base.h>
17#include <linux/kernel.h>
18#include <linux/module.h>
19
20asmlinkage void sha1_block_data_order(struct sha1_state *digest,
21 const u8 *data, int rounds);
22
23static int sha1_update_arm(struct shash_desc *desc, const u8 *data,
24 unsigned int len)
25{
26 /* make sure signature matches sha1_block_fn() */
27 BUILD_BUG_ON(offsetof(struct sha1_state, state) != 0);
28
29 return sha1_base_do_update_blocks(desc, data, len,
30 sha1_block_data_order);
31}
32
33static int sha1_finup_arm(struct shash_desc *desc, const u8 *data,
34 unsigned int len, u8 *out)
35{
36 sha1_base_do_finup(desc, data, len, sha1_block_data_order);
37 return sha1_base_finish(desc, out);
38}
39
40static struct shash_alg alg = {
41 .digestsize = SHA1_DIGEST_SIZE,
42 .init = sha1_base_init,
43 .update = sha1_update_arm,
44 .finup = sha1_finup_arm,
45 .descsize = SHA1_STATE_SIZE,
46 .base = {
47 .cra_name = "sha1",
48 .cra_driver_name= "sha1-asm",
49 .cra_priority = 150,
50 .cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY,
51 .cra_blocksize = SHA1_BLOCK_SIZE,
52 .cra_module = THIS_MODULE,
53 }
54};
55
56
57static int __init sha1_mod_init(void)
58{
59 return crypto_register_shash(&alg);
60}
61
62
63static void __exit sha1_mod_fini(void)
64{
65 crypto_unregister_shash(&alg);
66}
67
68
69module_init(sha1_mod_init);
70module_exit(sha1_mod_fini);
71
72MODULE_LICENSE("GPL");
73MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm (ARM)");
74MODULE_ALIAS_CRYPTO("sha1");
75MODULE_AUTHOR("David McCullough <ucdevel@gmail.com>");