Contributors: 6
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Ard Biesheuvel |
186 |
50.00% |
2 |
25.00% |
| Sami Tolvanen |
165 |
44.35% |
1 |
12.50% |
| Hans de Goede |
10 |
2.69% |
1 |
12.50% |
| Eric Biggers |
6 |
1.61% |
2 |
25.00% |
| Herbert Xu |
3 |
0.81% |
1 |
12.50% |
| Thomas Gleixner |
2 |
0.54% |
1 |
12.50% |
| Total |
372 |
|
8 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Glue code for the SHA256 Secure Hash Algorithm assembly implementation
* using NEON instructions.
*
* Copyright © 2015 Google Inc.
*
* This file is based on sha512_neon_glue.c:
* Copyright © 2014 Jussi Kivilinna <jussi.kivilinna@iki.fi>
*/
#include <crypto/internal/hash.h>
#include <crypto/internal/simd.h>
#include <linux/types.h>
#include <linux/string.h>
#include <crypto/sha2.h>
#include <crypto/sha256_base.h>
#include <asm/byteorder.h>
#include <asm/simd.h>
#include <asm/neon.h>
#include "sha256_glue.h"
asmlinkage void sha256_block_data_order_neon(struct sha256_state *digest,
const u8 *data, int num_blks);
static int crypto_sha256_neon_update(struct shash_desc *desc, const u8 *data,
unsigned int len)
{
struct sha256_state *sctx = shash_desc_ctx(desc);
if (!crypto_simd_usable() ||
(sctx->count % SHA256_BLOCK_SIZE) + len < SHA256_BLOCK_SIZE)
return crypto_sha256_arm_update(desc, data, len);
kernel_neon_begin();
sha256_base_do_update(desc, data, len, sha256_block_data_order_neon);
kernel_neon_end();
return 0;
}
static int crypto_sha256_neon_finup(struct shash_desc *desc, const u8 *data,
unsigned int len, u8 *out)
{
if (!crypto_simd_usable())
return crypto_sha256_arm_finup(desc, data, len, out);
kernel_neon_begin();
if (len)
sha256_base_do_update(desc, data, len,
sha256_block_data_order_neon);
sha256_base_do_finalize(desc, sha256_block_data_order_neon);
kernel_neon_end();
return sha256_base_finish(desc, out);
}
static int crypto_sha256_neon_final(struct shash_desc *desc, u8 *out)
{
return crypto_sha256_neon_finup(desc, NULL, 0, out);
}
struct shash_alg sha256_neon_algs[] = { {
.digestsize = SHA256_DIGEST_SIZE,
.init = sha256_base_init,
.update = crypto_sha256_neon_update,
.final = crypto_sha256_neon_final,
.finup = crypto_sha256_neon_finup,
.descsize = sizeof(struct sha256_state),
.base = {
.cra_name = "sha256",
.cra_driver_name = "sha256-neon",
.cra_priority = 250,
.cra_blocksize = SHA256_BLOCK_SIZE,
.cra_module = THIS_MODULE,
}
}, {
.digestsize = SHA224_DIGEST_SIZE,
.init = sha224_base_init,
.update = crypto_sha256_neon_update,
.final = crypto_sha256_neon_final,
.finup = crypto_sha256_neon_finup,
.descsize = sizeof(struct sha256_state),
.base = {
.cra_name = "sha224",
.cra_driver_name = "sha224-neon",
.cra_priority = 250,
.cra_blocksize = SHA224_BLOCK_SIZE,
.cra_module = THIS_MODULE,
}
} };