1// SPDX-License-Identifier: GPL-2.0 OR MIT
2/*
3 * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
4 */
5
6#include <crypto/internal/blake2s.h>
7#include <crypto/internal/simd.h>
8#include <crypto/internal/hash.h>
9
10#include <linux/types.h>
11#include <linux/kernel.h>
12#include <linux/module.h>
13#include <linux/sizes.h>
14
15#include <asm/cpufeature.h>
16#include <asm/processor.h>
17
18static int crypto_blake2s_update_x86(struct shash_desc *desc,
19				     const u8 *in, unsigned int inlen)
20{
21	return crypto_blake2s_update(desc, in, inlen, false);
22}
23
24static int crypto_blake2s_final_x86(struct shash_desc *desc, u8 *out)
25{
26	return crypto_blake2s_final(desc, out, false);
27}
28
29#define BLAKE2S_ALG(name, driver_name, digest_size)			\
30	{								\
31		.base.cra_name		= name,				\
32		.base.cra_driver_name	= driver_name,			\
33		.base.cra_priority	= 200,				\
34		.base.cra_flags		= CRYPTO_ALG_OPTIONAL_KEY,	\
35		.base.cra_blocksize	= BLAKE2S_BLOCK_SIZE,		\
36		.base.cra_ctxsize	= sizeof(struct blake2s_tfm_ctx), \
37		.base.cra_module	= THIS_MODULE,			\
38		.digestsize		= digest_size,			\
39		.setkey			= crypto_blake2s_setkey,	\
40		.init			= crypto_blake2s_init,		\
41		.update			= crypto_blake2s_update_x86,	\
42		.final			= crypto_blake2s_final_x86,	\
43		.descsize		= sizeof(struct blake2s_state),	\
44	}
45
46static struct shash_alg blake2s_algs[] = {
47	BLAKE2S_ALG("blake2s-128", "blake2s-128-x86", BLAKE2S_128_HASH_SIZE),
48	BLAKE2S_ALG("blake2s-160", "blake2s-160-x86", BLAKE2S_160_HASH_SIZE),
49	BLAKE2S_ALG("blake2s-224", "blake2s-224-x86", BLAKE2S_224_HASH_SIZE),
50	BLAKE2S_ALG("blake2s-256", "blake2s-256-x86", BLAKE2S_256_HASH_SIZE),
51};
52
53static int __init blake2s_mod_init(void)
54{
55	if (IS_REACHABLE(CONFIG_CRYPTO_HASH) && boot_cpu_has(X86_FEATURE_SSSE3))
56		return crypto_register_shashes(blake2s_algs, ARRAY_SIZE(blake2s_algs));
57	return 0;
58}
59
60static void __exit blake2s_mod_exit(void)
61{
62	if (IS_REACHABLE(CONFIG_CRYPTO_HASH) && boot_cpu_has(X86_FEATURE_SSSE3))
63		crypto_unregister_shashes(blake2s_algs, ARRAY_SIZE(blake2s_algs));
64}
65
66module_init(blake2s_mod_init);
67module_exit(blake2s_mod_exit);
68
69MODULE_ALIAS_CRYPTO("blake2s-128");
70MODULE_ALIAS_CRYPTO("blake2s-128-x86");
71MODULE_ALIAS_CRYPTO("blake2s-160");
72MODULE_ALIAS_CRYPTO("blake2s-160-x86");
73MODULE_ALIAS_CRYPTO("blake2s-224");
74MODULE_ALIAS_CRYPTO("blake2s-224-x86");
75MODULE_ALIAS_CRYPTO("blake2s-256");
76MODULE_ALIAS_CRYPTO("blake2s-256-x86");
77MODULE_LICENSE("GPL v2");
78