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 (2972B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * sha512-glue.c - accelerated SHA-384/512 for ARM
      4 *
      5 * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org>
      6 */
      7
      8#include <crypto/internal/hash.h>
      9#include <crypto/sha2.h>
     10#include <crypto/sha512_base.h>
     11#include <linux/crypto.h>
     12#include <linux/module.h>
     13
     14#include <asm/hwcap.h>
     15#include <asm/neon.h>
     16
     17#include "sha512.h"
     18
     19MODULE_DESCRIPTION("Accelerated SHA-384/SHA-512 secure hash for ARM");
     20MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
     21MODULE_LICENSE("GPL v2");
     22
     23MODULE_ALIAS_CRYPTO("sha384");
     24MODULE_ALIAS_CRYPTO("sha512");
     25MODULE_ALIAS_CRYPTO("sha384-arm");
     26MODULE_ALIAS_CRYPTO("sha512-arm");
     27
     28asmlinkage void sha512_block_data_order(u64 *state, u8 const *src, int blocks);
     29
     30int sha512_arm_update(struct shash_desc *desc, const u8 *data,
     31		      unsigned int len)
     32{
     33	return sha512_base_do_update(desc, data, len,
     34		(sha512_block_fn *)sha512_block_data_order);
     35}
     36
     37static int sha512_arm_final(struct shash_desc *desc, u8 *out)
     38{
     39	sha512_base_do_finalize(desc,
     40		(sha512_block_fn *)sha512_block_data_order);
     41	return sha512_base_finish(desc, out);
     42}
     43
     44int sha512_arm_finup(struct shash_desc *desc, const u8 *data,
     45		     unsigned int len, u8 *out)
     46{
     47	sha512_base_do_update(desc, data, len,
     48		(sha512_block_fn *)sha512_block_data_order);
     49	return sha512_arm_final(desc, out);
     50}
     51
     52static struct shash_alg sha512_arm_algs[] = { {
     53	.init			= sha384_base_init,
     54	.update			= sha512_arm_update,
     55	.final			= sha512_arm_final,
     56	.finup			= sha512_arm_finup,
     57	.descsize		= sizeof(struct sha512_state),
     58	.digestsize		= SHA384_DIGEST_SIZE,
     59	.base			= {
     60		.cra_name		= "sha384",
     61		.cra_driver_name	= "sha384-arm",
     62		.cra_priority		= 250,
     63		.cra_blocksize		= SHA512_BLOCK_SIZE,
     64		.cra_module		= THIS_MODULE,
     65	}
     66},  {
     67	.init			= sha512_base_init,
     68	.update			= sha512_arm_update,
     69	.final			= sha512_arm_final,
     70	.finup			= sha512_arm_finup,
     71	.descsize		= sizeof(struct sha512_state),
     72	.digestsize		= SHA512_DIGEST_SIZE,
     73	.base			= {
     74		.cra_name		= "sha512",
     75		.cra_driver_name	= "sha512-arm",
     76		.cra_priority		= 250,
     77		.cra_blocksize		= SHA512_BLOCK_SIZE,
     78		.cra_module		= THIS_MODULE,
     79	}
     80} };
     81
     82static int __init sha512_arm_mod_init(void)
     83{
     84	int err;
     85
     86	err = crypto_register_shashes(sha512_arm_algs,
     87				      ARRAY_SIZE(sha512_arm_algs));
     88	if (err)
     89		return err;
     90
     91	if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) {
     92		err = crypto_register_shashes(sha512_neon_algs,
     93					      ARRAY_SIZE(sha512_neon_algs));
     94		if (err)
     95			goto err_unregister;
     96	}
     97	return 0;
     98
     99err_unregister:
    100	crypto_unregister_shashes(sha512_arm_algs,
    101				  ARRAY_SIZE(sha512_arm_algs));
    102
    103	return err;
    104}
    105
    106static void __exit sha512_arm_mod_fini(void)
    107{
    108	crypto_unregister_shashes(sha512_arm_algs,
    109				  ARRAY_SIZE(sha512_arm_algs));
    110	if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon())
    111		crypto_unregister_shashes(sha512_neon_algs,
    112					  ARRAY_SIZE(sha512_neon_algs));
    113}
    114
    115module_init(sha512_arm_mod_init);
    116module_exit(sha512_arm_mod_fini);