1// SPDX-License-Identifier: GPL-2.0 OR MIT
 2/*
 3 * shash interface to the generic implementation of BLAKE2s
 4 *
 5 * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 6 */
 7
 8#include <crypto/internal/blake2s.h>
 9#include <crypto/internal/hash.h>
10
11#include <linux/types.h>
12#include <linux/kernel.h>
13#include <linux/module.h>
14
15static int crypto_blake2s_update_generic(struct shash_desc *desc,
16					 const u8 *in, unsigned int inlen)
17{
18	return crypto_blake2s_update(desc, in, inlen, blake2s_compress_generic);
19}
20
21static int crypto_blake2s_final_generic(struct shash_desc *desc, u8 *out)
22{
23	return crypto_blake2s_final(desc, out, blake2s_compress_generic);
24}
25
26#define BLAKE2S_ALG(name, driver_name, digest_size)			\
27	{								\
28		.base.cra_name		= name,				\
29		.base.cra_driver_name	= driver_name,			\
30		.base.cra_priority	= 100,				\
31		.base.cra_flags		= CRYPTO_ALG_OPTIONAL_KEY,	\
32		.base.cra_blocksize	= BLAKE2S_BLOCK_SIZE,		\
33		.base.cra_ctxsize	= sizeof(struct blake2s_tfm_ctx), \
34		.base.cra_module	= THIS_MODULE,			\
35		.digestsize		= digest_size,			\
36		.setkey			= crypto_blake2s_setkey,	\
37		.init			= crypto_blake2s_init,		\
38		.update			= crypto_blake2s_update_generic, \
39		.final			= crypto_blake2s_final_generic,	\
40		.descsize		= sizeof(struct blake2s_state),	\
41	}
42
43static struct shash_alg blake2s_algs[] = {
44	BLAKE2S_ALG("blake2s-128", "blake2s-128-generic",
45		    BLAKE2S_128_HASH_SIZE),
46	BLAKE2S_ALG("blake2s-160", "blake2s-160-generic",
47		    BLAKE2S_160_HASH_SIZE),
48	BLAKE2S_ALG("blake2s-224", "blake2s-224-generic",
49		    BLAKE2S_224_HASH_SIZE),
50	BLAKE2S_ALG("blake2s-256", "blake2s-256-generic",
51		    BLAKE2S_256_HASH_SIZE),
52};
53
54static int __init blake2s_mod_init(void)
55{
56	return crypto_register_shashes(blake2s_algs, ARRAY_SIZE(blake2s_algs));
57}
58
59static void __exit blake2s_mod_exit(void)
60{
61	crypto_unregister_shashes(blake2s_algs, ARRAY_SIZE(blake2s_algs));
62}
63
64subsys_initcall(blake2s_mod_init);
65module_exit(blake2s_mod_exit);
66
67MODULE_ALIAS_CRYPTO("blake2s-128");
68MODULE_ALIAS_CRYPTO("blake2s-128-generic");
69MODULE_ALIAS_CRYPTO("blake2s-160");
70MODULE_ALIAS_CRYPTO("blake2s-160-generic");
71MODULE_ALIAS_CRYPTO("blake2s-224");
72MODULE_ALIAS_CRYPTO("blake2s-224-generic");
73MODULE_ALIAS_CRYPTO("blake2s-256");
74MODULE_ALIAS_CRYPTO("blake2s-256-generic");
75MODULE_LICENSE("GPL v2");