mirror of
https://github.com/torvalds/linux.git
synced 2024-09-20 23:13:00 +00:00
2aaba014b5
<linux/cryptohash.h> sounds very generic and important, like it's the header to include if you're doing cryptographic hashing in the kernel. But actually it only includes the library implementation of the SHA-1 compression function (not even the full SHA-1). This should basically never be used anymore; SHA-1 is no longer considered secure, and there are much better ways to do cryptographic hashing in the kernel. Most files that include this header don't actually need it. So in preparation for removing it, remove all these unneeded includes of it. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
105 lines
2.6 KiB
C
105 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Glue code for the SHA1 Secure Hash Algorithm assembler implementation using
|
|
* ARM NEON instructions.
|
|
*
|
|
* Copyright © 2014 Jussi Kivilinna <jussi.kivilinna@iki.fi>
|
|
*
|
|
* This file is based on sha1_generic.c and sha1_ssse3_glue.c:
|
|
* Copyright (c) Alan Smithee.
|
|
* Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
|
|
* Copyright (c) Jean-Francois Dive <jef@linuxbe.org>
|
|
* Copyright (c) Mathias Krause <minipli@googlemail.com>
|
|
* Copyright (c) Chandramouli Narayanan <mouli@linux.intel.com>
|
|
*/
|
|
|
|
#include <crypto/internal/hash.h>
|
|
#include <crypto/internal/simd.h>
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/types.h>
|
|
#include <crypto/sha.h>
|
|
#include <crypto/sha1_base.h>
|
|
#include <asm/neon.h>
|
|
#include <asm/simd.h>
|
|
|
|
#include "sha1.h"
|
|
|
|
asmlinkage void sha1_transform_neon(void *state_h, const char *data,
|
|
unsigned int rounds);
|
|
|
|
static int sha1_neon_update(struct shash_desc *desc, const u8 *data,
|
|
unsigned int len)
|
|
{
|
|
struct sha1_state *sctx = shash_desc_ctx(desc);
|
|
|
|
if (!crypto_simd_usable() ||
|
|
(sctx->count % SHA1_BLOCK_SIZE) + len < SHA1_BLOCK_SIZE)
|
|
return sha1_update_arm(desc, data, len);
|
|
|
|
kernel_neon_begin();
|
|
sha1_base_do_update(desc, data, len,
|
|
(sha1_block_fn *)sha1_transform_neon);
|
|
kernel_neon_end();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sha1_neon_finup(struct shash_desc *desc, const u8 *data,
|
|
unsigned int len, u8 *out)
|
|
{
|
|
if (!crypto_simd_usable())
|
|
return sha1_finup_arm(desc, data, len, out);
|
|
|
|
kernel_neon_begin();
|
|
if (len)
|
|
sha1_base_do_update(desc, data, len,
|
|
(sha1_block_fn *)sha1_transform_neon);
|
|
sha1_base_do_finalize(desc, (sha1_block_fn *)sha1_transform_neon);
|
|
kernel_neon_end();
|
|
|
|
return sha1_base_finish(desc, out);
|
|
}
|
|
|
|
static int sha1_neon_final(struct shash_desc *desc, u8 *out)
|
|
{
|
|
return sha1_neon_finup(desc, NULL, 0, out);
|
|
}
|
|
|
|
static struct shash_alg alg = {
|
|
.digestsize = SHA1_DIGEST_SIZE,
|
|
.init = sha1_base_init,
|
|
.update = sha1_neon_update,
|
|
.final = sha1_neon_final,
|
|
.finup = sha1_neon_finup,
|
|
.descsize = sizeof(struct sha1_state),
|
|
.base = {
|
|
.cra_name = "sha1",
|
|
.cra_driver_name = "sha1-neon",
|
|
.cra_priority = 250,
|
|
.cra_blocksize = SHA1_BLOCK_SIZE,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
};
|
|
|
|
static int __init sha1_neon_mod_init(void)
|
|
{
|
|
if (!cpu_has_neon())
|
|
return -ENODEV;
|
|
|
|
return crypto_register_shash(&alg);
|
|
}
|
|
|
|
static void __exit sha1_neon_mod_fini(void)
|
|
{
|
|
crypto_unregister_shash(&alg);
|
|
}
|
|
|
|
module_init(sha1_neon_mod_init);
|
|
module_exit(sha1_neon_mod_fini);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm, NEON accelerated");
|
|
MODULE_ALIAS_CRYPTO("sha1");
|