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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>
122 lines
3.1 KiB
C
122 lines
3.1 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 optimized ARM assembler and 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 sha256_ssse3_glue.c:
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* Copyright (C) 2013 Intel Corporation
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* Author: Tim Chen <tim.c.chen@linux.intel.com>
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*/
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#include <crypto/internal/hash.h>
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#include <linux/crypto.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 <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/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(u32 *digest, const void *data,
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unsigned int num_blks);
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int crypto_sha256_arm_update(struct shash_desc *desc, const u8 *data,
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unsigned int len)
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{
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/* make sure casting to sha256_block_fn() is safe */
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BUILD_BUG_ON(offsetof(struct sha256_state, state) != 0);
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return sha256_base_do_update(desc, data, len,
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(sha256_block_fn *)sha256_block_data_order);
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}
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EXPORT_SYMBOL(crypto_sha256_arm_update);
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static int sha256_final(struct shash_desc *desc, u8 *out)
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{
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sha256_base_do_finalize(desc,
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(sha256_block_fn *)sha256_block_data_order);
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return sha256_base_finish(desc, out);
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}
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int crypto_sha256_arm_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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sha256_base_do_update(desc, data, len,
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(sha256_block_fn *)sha256_block_data_order);
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return sha256_final(desc, out);
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}
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EXPORT_SYMBOL(crypto_sha256_arm_finup);
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static struct shash_alg algs[] = { {
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.digestsize = SHA256_DIGEST_SIZE,
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.init = sha256_base_init,
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.update = crypto_sha256_arm_update,
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.final = sha256_final,
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.finup = crypto_sha256_arm_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-asm",
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.cra_priority = 150,
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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_arm_update,
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.final = sha256_final,
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.finup = crypto_sha256_arm_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-asm",
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.cra_priority = 150,
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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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static int __init sha256_mod_init(void)
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{
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int res = crypto_register_shashes(algs, ARRAY_SIZE(algs));
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if (res < 0)
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return res;
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if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) {
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res = crypto_register_shashes(sha256_neon_algs,
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ARRAY_SIZE(sha256_neon_algs));
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if (res < 0)
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crypto_unregister_shashes(algs, ARRAY_SIZE(algs));
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}
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return res;
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}
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static void __exit sha256_mod_fini(void)
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{
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crypto_unregister_shashes(algs, ARRAY_SIZE(algs));
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if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon())
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crypto_unregister_shashes(sha256_neon_algs,
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ARRAY_SIZE(sha256_neon_algs));
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}
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module_init(sha256_mod_init);
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module_exit(sha256_mod_fini);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("SHA256 Secure Hash Algorithm (ARM), including NEON");
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MODULE_ALIAS_CRYPTO("sha256");
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