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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sha512-glue.c (2511B)

      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 <linux/types.h>
     10#include <linux/string.h>
     11#include <crypto/sha2.h>
     12#include <crypto/sha512_base.h>
     13#include <asm/neon.h>
     14
     15MODULE_DESCRIPTION("SHA-384/SHA-512 secure hash for arm64");
     16MODULE_AUTHOR("Andy Polyakov <appro@openssl.org>");
     17MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
     18MODULE_LICENSE("GPL v2");
     19MODULE_ALIAS_CRYPTO("sha384");
     20MODULE_ALIAS_CRYPTO("sha512");
     21
     22asmlinkage void sha512_block_data_order(u64 *digest, const void *data,
     23					unsigned int num_blks);
     24EXPORT_SYMBOL(sha512_block_data_order);
     25
     26static void __sha512_block_data_order(struct sha512_state *sst, u8 const *src,
     27				      int blocks)
     28{
     29	sha512_block_data_order(sst->state, src, blocks);
     30}
     31
     32static int sha512_update(struct shash_desc *desc, const u8 *data,
     33			 unsigned int len)
     34{
     35	return sha512_base_do_update(desc, data, len,
     36				     __sha512_block_data_order);
     37}
     38
     39static int sha512_finup(struct shash_desc *desc, const u8 *data,
     40			unsigned int len, u8 *out)
     41{
     42	if (len)
     43		sha512_base_do_update(desc, data, len,
     44				      __sha512_block_data_order);
     45	sha512_base_do_finalize(desc, __sha512_block_data_order);
     46
     47	return sha512_base_finish(desc, out);
     48}
     49
     50static int sha512_final(struct shash_desc *desc, u8 *out)
     51{
     52	return sha512_finup(desc, NULL, 0, out);
     53}
     54
     55static struct shash_alg algs[] = { {
     56	.digestsize		= SHA512_DIGEST_SIZE,
     57	.init			= sha512_base_init,
     58	.update			= sha512_update,
     59	.final			= sha512_final,
     60	.finup			= sha512_finup,
     61	.descsize		= sizeof(struct sha512_state),
     62	.base.cra_name		= "sha512",
     63	.base.cra_driver_name	= "sha512-arm64",
     64	.base.cra_priority	= 150,
     65	.base.cra_blocksize	= SHA512_BLOCK_SIZE,
     66	.base.cra_module	= THIS_MODULE,
     67}, {
     68	.digestsize		= SHA384_DIGEST_SIZE,
     69	.init			= sha384_base_init,
     70	.update			= sha512_update,
     71	.final			= sha512_final,
     72	.finup			= sha512_finup,
     73	.descsize		= sizeof(struct sha512_state),
     74	.base.cra_name		= "sha384",
     75	.base.cra_driver_name	= "sha384-arm64",
     76	.base.cra_priority	= 150,
     77	.base.cra_blocksize	= SHA384_BLOCK_SIZE,
     78	.base.cra_module	= THIS_MODULE,
     79} };
     80
     81static int __init sha512_mod_init(void)
     82{
     83	return crypto_register_shashes(algs, ARRAY_SIZE(algs));
     84}
     85
     86static void __exit sha512_mod_fini(void)
     87{
     88	crypto_unregister_shashes(algs, ARRAY_SIZE(algs));
     89}
     90
     91module_init(sha512_mod_init);
     92module_exit(sha512_mod_fini);