mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
94 lines
2.5 KiB
94 lines
2.5 KiB
// 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 <[email protected]> |
|
*/ |
|
|
|
#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(u32 *digest, const void *data, |
|
unsigned 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_fn *)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_fn *)sha256_block_data_order_neon); |
|
sha256_base_do_finalize(desc, |
|
(sha256_block_fn *)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, |
|
} |
|
} };
|
|
|