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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Glue code for the SHA1 Secure Hash Algorithm assembler implementation using
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* ARM NEON instructions.
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*
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* Copyright © 2014 Jussi Kivilinna <jussi.kivilinna@iki.fi>
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*
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* This file is based on sha1_generic.c and sha1_ssse3_glue.c:
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* Copyright (c) Alan Smithee.
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* Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
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* Copyright (c) Jean-Francois Dive <jef@linuxbe.org>
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* Copyright (c) Mathias Krause <minipli@googlemail.com>
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* Copyright (c) Chandramouli Narayanan <mouli@linux.intel.com>
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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/init.h>
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#include <linux/module.h>
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#include <linux/mm.h>
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#include <linux/cryptohash.h>
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#include <linux/types.h>
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#include <crypto/sha.h>
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#include <crypto/sha1_base.h>
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#include <asm/neon.h>
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#include <asm/simd.h>
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#include "sha1.h"
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asmlinkage void sha1_transform_neon(void *state_h, const char *data,
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unsigned int rounds);
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static int sha1_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 sha1_state *sctx = shash_desc_ctx(desc);
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if (!crypto_simd_usable() ||
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(sctx->count % SHA1_BLOCK_SIZE) + len < SHA1_BLOCK_SIZE)
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return sha1_update_arm(desc, data, len);
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kernel_neon_begin();
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sha1_base_do_update(desc, data, len,
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(sha1_block_fn *)sha1_transform_neon);
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kernel_neon_end();
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return 0;
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}
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static int sha1_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 sha1_finup_arm(desc, data, len, out);
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kernel_neon_begin();
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if (len)
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sha1_base_do_update(desc, data, len,
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(sha1_block_fn *)sha1_transform_neon);
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sha1_base_do_finalize(desc, (sha1_block_fn *)sha1_transform_neon);
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kernel_neon_end();
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return sha1_base_finish(desc, out);
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}
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static int sha1_neon_final(struct shash_desc *desc, u8 *out)
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{
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return sha1_neon_finup(desc, NULL, 0, out);
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}
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static struct shash_alg alg = {
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.digestsize = SHA1_DIGEST_SIZE,
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.init = sha1_base_init,
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.update = sha1_neon_update,
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.final = sha1_neon_final,
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.finup = sha1_neon_finup,
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.descsize = sizeof(struct sha1_state),
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.base = {
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.cra_name = "sha1",
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.cra_driver_name = "sha1-neon",
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.cra_priority = 250,
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.cra_blocksize = SHA1_BLOCK_SIZE,
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.cra_module = THIS_MODULE,
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}
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};
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static int __init sha1_neon_mod_init(void)
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{
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if (!cpu_has_neon())
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return -ENODEV;
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return crypto_register_shash(&alg);
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}
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static void __exit sha1_neon_mod_fini(void)
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{
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crypto_unregister_shash(&alg);
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}
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module_init(sha1_neon_mod_init);
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module_exit(sha1_neon_mod_fini);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm, NEON accelerated");
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MODULE_ALIAS_CRYPTO("sha1");
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