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
30 asmlinkage void sha1_block_data_order(u32 *digest,
31 const unsigned char *data, unsigned int rounds);
32
sha1_update_arm(struct shash_desc * desc,const u8 * data,unsigned int len)33 int 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 }
42 EXPORT_SYMBOL_GPL(sha1_update_arm);
43
sha1_final(struct shash_desc * desc,u8 * out)44 static 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
sha1_finup_arm(struct shash_desc * desc,const u8 * data,unsigned int len,u8 * out)50 int 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 }
57 EXPORT_SYMBOL_GPL(sha1_finup_arm);
58
59 static 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_blocksize = SHA1_BLOCK_SIZE,
71 .cra_module = THIS_MODULE,
72 }
73 };
74
75
sha1_mod_init(void)76 static int __init sha1_mod_init(void)
77 {
78 return crypto_register_shash(&alg);
79 }
80
81
sha1_mod_fini(void)82 static void __exit sha1_mod_fini(void)
83 {
84 crypto_unregister_shash(&alg);
85 }
86
87
88 module_init(sha1_mod_init);
89 module_exit(sha1_mod_fini);
90
91 MODULE_LICENSE("GPL");
92 MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm (ARM)");
93 MODULE_ALIAS_CRYPTO("sha1");
94 MODULE_AUTHOR("David McCullough <ucdevel@gmail.com>");
95
