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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sha1_glue.c (2225B)

      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
     24asmlinkage void sha1_block_data_order(u32 *digest,
     25		const unsigned char *data, unsigned int rounds);
     26
     27int 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}
     36EXPORT_SYMBOL_GPL(sha1_update_arm);
     37
     38static 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
     44int 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}
     51EXPORT_SYMBOL_GPL(sha1_finup_arm);
     52
     53static 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
     70static int __init sha1_mod_init(void)
     71{
     72	return crypto_register_shash(&alg);
     73}
     74
     75
     76static void __exit sha1_mod_fini(void)
     77{
     78	crypto_unregister_shash(&alg);
     79}
     80
     81
     82module_init(sha1_mod_init);
     83module_exit(sha1_mod_fini);
     84
     85MODULE_LICENSE("GPL");
     86MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm (ARM)");
     87MODULE_ALIAS_CRYPTO("sha1");
     88MODULE_AUTHOR("David McCullough <ucdevel@gmail.com>");