cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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blake2s-shash.c (2417B)

      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");