1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Linux/arm64 port of the OpenSSL SHA512 implementation for AArch64
4 *
5 * Copyright (c) 2016 Linaro Ltd. <ard.biesheuvel@linaro.org>
6 */
7
8#include <crypto/internal/hash.h>
9#include <crypto/sha2.h>
10#include <crypto/sha512_base.h>
11#include <linux/kernel.h>
12#include <linux/module.h>
13
14MODULE_DESCRIPTION("SHA-384/SHA-512 secure hash for arm64");
15MODULE_AUTHOR("Andy Polyakov <appro@openssl.org>");
16MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
17MODULE_LICENSE("GPL v2");
18MODULE_ALIAS_CRYPTO("sha384");
19MODULE_ALIAS_CRYPTO("sha512");
20
21asmlinkage void sha512_blocks_arch(u64 *digest, const void *data,
22 unsigned int num_blks);
23
24static void sha512_arm64_transform(struct sha512_state *sst, u8 const *src,
25 int blocks)
26{
27 sha512_blocks_arch(digest: sst->state, data: src, num_blks: blocks);
28}
29
30static int sha512_update(struct shash_desc *desc, const u8 *data,
31 unsigned int len)
32{
33 return sha512_base_do_update_blocks(desc, data, len,
34 block_fn: sha512_arm64_transform);
35}
36
37static int sha512_finup(struct shash_desc *desc, const u8 *data,
38 unsigned int len, u8 *out)
39{
40 sha512_base_do_finup(desc, src: data, len, block_fn: sha512_arm64_transform);
41 return sha512_base_finish(desc, out);
42}
43
44static struct shash_alg algs[] = { {
45 .digestsize = SHA512_DIGEST_SIZE,
46 .init = sha512_base_init,
47 .update = sha512_update,
48 .finup = sha512_finup,
49 .descsize = SHA512_STATE_SIZE,
50 .base.cra_name = "sha512",
51 .base.cra_driver_name = "sha512-arm64",
52 .base.cra_priority = 150,
53 .base.cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY |
54 CRYPTO_AHASH_ALG_FINUP_MAX,
55 .base.cra_blocksize = SHA512_BLOCK_SIZE,
56 .base.cra_module = THIS_MODULE,
57}, {
58 .digestsize = SHA384_DIGEST_SIZE,
59 .init = sha384_base_init,
60 .update = sha512_update,
61 .finup = sha512_finup,
62 .descsize = SHA512_STATE_SIZE,
63 .base.cra_name = "sha384",
64 .base.cra_driver_name = "sha384-arm64",
65 .base.cra_priority = 150,
66 .base.cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY |
67 CRYPTO_AHASH_ALG_FINUP_MAX,
68 .base.cra_blocksize = SHA384_BLOCK_SIZE,
69 .base.cra_module = THIS_MODULE,
70} };
71
72static int __init sha512_mod_init(void)
73{
74 return crypto_register_shashes(algs, ARRAY_SIZE(algs));
75}
76
77static void __exit sha512_mod_fini(void)
78{
79 crypto_unregister_shashes(algs, ARRAY_SIZE(algs));
80}
81
82module_init(sha512_mod_init);
83module_exit(sha512_mod_fini);
84

source code of linux/arch/arm64/crypto/sha512-glue.c