1/*
2 * Cryptographic API.
3 * Glue code for the SHA1 Secure Hash Algorithm assembler implementation
4 *
5 * This file is based on sha1_generic.c and sha1_ssse3_glue.c
6 *
7 * Copyright (c) Alan Smithee.
8 * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
9 * Copyright (c) Jean-Francois Dive <jef@linuxbe.org>
10 * Copyright (c) Mathias Krause <minipli@googlemail.com>
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the Free
14 * Software Foundation; either version 2 of the License, or (at your option)
15 * any later version.
16 *
17 */
18
19#include <crypto/internal/hash.h>
20#include <linux/init.h>
21#include <linux/module.h>
22#include <linux/cryptohash.h>
23#include <linux/types.h>
24#include <crypto/sha.h>
25#include <crypto/sha1_base.h>
26#include <asm/byteorder.h>
27
28#include "sha1.h"
29
30asmlinkage void sha1_block_data_order(u32 *digest,
31		const unsigned char *data, unsigned int rounds);
32
33int sha1_update_arm(struct shash_desc *desc, const u8 *data,
34		    unsigned int len)
35{
36	/* make sure casting to sha1_block_fn() is safe */
37	BUILD_BUG_ON(offsetof(struct sha1_state, state) != 0);
38
39	return sha1_base_do_update(desc, data, len,
40				   (sha1_block_fn *)sha1_block_data_order);
41}
42EXPORT_SYMBOL_GPL(sha1_update_arm);
43
44static int sha1_final(struct shash_desc *desc, u8 *out)
45{
46	sha1_base_do_finalize(desc, (sha1_block_fn *)sha1_block_data_order);
47	return sha1_base_finish(desc, out);
48}
49
50int sha1_finup_arm(struct shash_desc *desc, const u8 *data,
51		   unsigned int len, u8 *out)
52{
53	sha1_base_do_update(desc, data, len,
54			    (sha1_block_fn *)sha1_block_data_order);
55	return sha1_final(desc, out);
56}
57EXPORT_SYMBOL_GPL(sha1_finup_arm);
58
59static struct shash_alg alg = {
60	.digestsize	=	SHA1_DIGEST_SIZE,
61	.init		=	sha1_base_init,
62	.update		=	sha1_update_arm,
63	.final		=	sha1_final,
64	.finup		=	sha1_finup_arm,
65	.descsize	=	sizeof(struct sha1_state),
66	.base		=	{
67		.cra_name	=	"sha1",
68		.cra_driver_name=	"sha1-asm",
69		.cra_priority	=	150,
70		.cra_flags	=	CRYPTO_ALG_TYPE_SHASH,
71		.cra_blocksize	=	SHA1_BLOCK_SIZE,
72		.cra_module	=	THIS_MODULE,
73	}
74};
75
76
77static int __init sha1_mod_init(void)
78{
79	return crypto_register_shash(&alg);
80}
81
82
83static void __exit sha1_mod_fini(void)
84{
85	crypto_unregister_shash(&alg);
86}
87
88
89module_init(sha1_mod_init);
90module_exit(sha1_mod_fini);
91
92MODULE_LICENSE("GPL");
93MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm (ARM)");
94MODULE_ALIAS_CRYPTO("sha1");
95MODULE_AUTHOR("David McCullough <ucdevel@gmail.com>");
96