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2874c5fd28
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>
98 lines
2.4 KiB
C
98 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Cryptographic API.
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*
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* SHA1 Secure Hash Algorithm.
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*
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* Derived from cryptoapi implementation, adapted for in-place
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* scatterlist interface.
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*
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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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*/
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#include <crypto/internal/hash.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/byteorder.h>
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const u8 sha1_zero_message_hash[SHA1_DIGEST_SIZE] = {
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0xda, 0x39, 0xa3, 0xee, 0x5e, 0x6b, 0x4b, 0x0d,
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0x32, 0x55, 0xbf, 0xef, 0x95, 0x60, 0x18, 0x90,
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0xaf, 0xd8, 0x07, 0x09
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};
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EXPORT_SYMBOL_GPL(sha1_zero_message_hash);
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static void sha1_generic_block_fn(struct sha1_state *sst, u8 const *src,
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int blocks)
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{
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u32 temp[SHA_WORKSPACE_WORDS];
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while (blocks--) {
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sha_transform(sst->state, src, temp);
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src += SHA1_BLOCK_SIZE;
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}
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memzero_explicit(temp, sizeof(temp));
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}
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int crypto_sha1_update(struct shash_desc *desc, const u8 *data,
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unsigned int len)
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{
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return sha1_base_do_update(desc, data, len, sha1_generic_block_fn);
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}
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EXPORT_SYMBOL(crypto_sha1_update);
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static int sha1_final(struct shash_desc *desc, u8 *out)
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{
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sha1_base_do_finalize(desc, sha1_generic_block_fn);
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return sha1_base_finish(desc, out);
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}
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int crypto_sha1_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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sha1_base_do_update(desc, data, len, sha1_generic_block_fn);
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return sha1_final(desc, out);
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}
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EXPORT_SYMBOL(crypto_sha1_finup);
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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 = crypto_sha1_update,
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.final = sha1_final,
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.finup = crypto_sha1_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-generic",
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.cra_priority = 100,
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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_generic_mod_init(void)
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{
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return crypto_register_shash(&alg);
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}
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static void __exit sha1_generic_mod_fini(void)
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{
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crypto_unregister_shash(&alg);
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}
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subsys_initcall(sha1_generic_mod_init);
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module_exit(sha1_generic_mod_fini);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm");
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MODULE_ALIAS_CRYPTO("sha1");
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MODULE_ALIAS_CRYPTO("sha1-generic");
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