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 <linux/init.h>
16 #include <linux/module.h>
17 #include <linux/types.h>
18 #include <crypto/sha1.h>
19 #include <crypto/sha1_base.h>
20 #include <asm/byteorder.h>
21
22 #include "sha1.h"
23
24 asmlinkage void sha1_block_data_order(u32 *digest,
25 const unsigned char *data, unsigned int rounds);
26
sha1_update_arm(struct shash_desc * desc,const u8 * data,unsigned int len)27 int sha1_update_arm(struct shash_desc *desc, const u8 *data,
28 unsigned int len)
29 {
30 /* make sure casting to sha1_block_fn() is safe */
31 BUILD_BUG_ON(offsetof(struct sha1_state, state) != 0);
32
33 return sha1_base_do_update(desc, data, len,
34 (sha1_block_fn *)sha1_block_data_order);
35 }
36 EXPORT_SYMBOL_GPL(sha1_update_arm);
37
sha1_final(struct shash_desc * desc,u8 * out)38 static int sha1_final(struct shash_desc *desc, u8 *out)
39 {
40 sha1_base_do_finalize(desc, (sha1_block_fn *)sha1_block_data_order);
41 return sha1_base_finish(desc, out);
42 }
43
sha1_finup_arm(struct shash_desc * desc,const u8 * data,unsigned int len,u8 * out)44 int sha1_finup_arm(struct shash_desc *desc, const u8 *data,
45 unsigned int len, u8 *out)
46 {
47 sha1_base_do_update(desc, data, len,
48 (sha1_block_fn *)sha1_block_data_order);
49 return sha1_final(desc, out);
50 }
51 EXPORT_SYMBOL_GPL(sha1_finup_arm);
52
53 static struct shash_alg alg = {
54 .digestsize = SHA1_DIGEST_SIZE,
55 .init = sha1_base_init,
56 .update = sha1_update_arm,
57 .final = sha1_final,
58 .finup = sha1_finup_arm,
59 .descsize = sizeof(struct sha1_state),
60 .base = {
61 .cra_name = "sha1",
62 .cra_driver_name= "sha1-asm",
63 .cra_priority = 150,
64 .cra_blocksize = SHA1_BLOCK_SIZE,
65 .cra_module = THIS_MODULE,
66 }
67 };
68
69
sha1_mod_init(void)70 static int __init sha1_mod_init(void)
71 {
72 return crypto_register_shash(&alg);
73 }
74
75
sha1_mod_fini(void)76 static void __exit sha1_mod_fini(void)
77 {
78 crypto_unregister_shash(&alg);
79 }
80
81
82 module_init(sha1_mod_init);
83 module_exit(sha1_mod_fini);
84
85 MODULE_LICENSE("GPL");
86 MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm (ARM)");
87 MODULE_ALIAS_CRYPTO("sha1");
88 MODULE_AUTHOR("David McCullough <ucdevel@gmail.com>");
89