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https://github.com/torvalds/linux
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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>
95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Glue code for the SHA256 Secure Hash Algorithm assembly implementation
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* using NEON instructions.
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*
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* Copyright © 2015 Google Inc.
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*
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* This file is based on sha512_neon_glue.c:
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* Copyright © 2014 Jussi Kivilinna <jussi.kivilinna@iki.fi>
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*/
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#include <crypto/internal/hash.h>
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#include <crypto/internal/simd.h>
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#include <linux/types.h>
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#include <linux/string.h>
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#include <crypto/sha.h>
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#include <crypto/sha256_base.h>
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#include <asm/byteorder.h>
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#include <asm/simd.h>
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#include <asm/neon.h>
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#include "sha256_glue.h"
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asmlinkage void sha256_block_data_order_neon(u32 *digest, const void *data,
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unsigned int num_blks);
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static int crypto_sha256_neon_update(struct shash_desc *desc, const u8 *data,
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unsigned int len)
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{
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struct sha256_state *sctx = shash_desc_ctx(desc);
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if (!crypto_simd_usable() ||
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(sctx->count % SHA256_BLOCK_SIZE) + len < SHA256_BLOCK_SIZE)
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return crypto_sha256_arm_update(desc, data, len);
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kernel_neon_begin();
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sha256_base_do_update(desc, data, len,
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(sha256_block_fn *)sha256_block_data_order_neon);
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kernel_neon_end();
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return 0;
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}
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static int crypto_sha256_neon_finup(struct shash_desc *desc, const u8 *data,
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unsigned int len, u8 *out)
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{
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if (!crypto_simd_usable())
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return crypto_sha256_arm_finup(desc, data, len, out);
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kernel_neon_begin();
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if (len)
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sha256_base_do_update(desc, data, len,
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(sha256_block_fn *)sha256_block_data_order_neon);
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sha256_base_do_finalize(desc,
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(sha256_block_fn *)sha256_block_data_order_neon);
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kernel_neon_end();
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return sha256_base_finish(desc, out);
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}
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static int crypto_sha256_neon_final(struct shash_desc *desc, u8 *out)
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{
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return crypto_sha256_neon_finup(desc, NULL, 0, out);
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}
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struct shash_alg sha256_neon_algs[] = { {
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.digestsize = SHA256_DIGEST_SIZE,
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.init = sha256_base_init,
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.update = crypto_sha256_neon_update,
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.final = crypto_sha256_neon_final,
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.finup = crypto_sha256_neon_finup,
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.descsize = sizeof(struct sha256_state),
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.base = {
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.cra_name = "sha256",
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.cra_driver_name = "sha256-neon",
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.cra_priority = 250,
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.cra_blocksize = SHA256_BLOCK_SIZE,
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.cra_module = THIS_MODULE,
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}
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}, {
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.digestsize = SHA224_DIGEST_SIZE,
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.init = sha224_base_init,
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.update = crypto_sha256_neon_update,
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.final = crypto_sha256_neon_final,
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.finup = crypto_sha256_neon_finup,
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.descsize = sizeof(struct sha256_state),
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.base = {
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.cra_name = "sha224",
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.cra_driver_name = "sha224-neon",
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.cra_priority = 250,
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.cra_blocksize = SHA224_BLOCK_SIZE,
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.cra_module = THIS_MODULE,
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}
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} };
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