a53c8fab3f
Remove the file name from the comment at top of many files. In most cases the file name was wrong anyway, so it's rather pointless. Also unify the IBM copyright statement. We did have a lot of sightly different statements and wanted to change them one after another whenever a file gets touched. However that never happened. Instead people start to take the old/"wrong" statements to use as a template for new files. So unify all of them in one go. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
108 lines
2.7 KiB
C
108 lines
2.7 KiB
C
/*
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* Cryptographic API.
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*
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* s390 implementation of the 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. Originally based on the public domain
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* implementation written by Steve Reid.
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*
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* s390 Version:
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* Copyright IBM Corp. 2003, 2007
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* Author(s): Thomas Spatzier
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* Jan Glauber (jan.glauber@de.ibm.com)
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*
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* Derived from "crypto/sha1_generic.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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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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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 <crypto/sha.h>
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#include "crypt_s390.h"
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#include "sha.h"
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static int sha1_init(struct shash_desc *desc)
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{
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struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
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sctx->state[0] = SHA1_H0;
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sctx->state[1] = SHA1_H1;
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sctx->state[2] = SHA1_H2;
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sctx->state[3] = SHA1_H3;
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sctx->state[4] = SHA1_H4;
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sctx->count = 0;
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sctx->func = KIMD_SHA_1;
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return 0;
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}
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static int sha1_export(struct shash_desc *desc, void *out)
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{
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struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
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struct sha1_state *octx = out;
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octx->count = sctx->count;
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memcpy(octx->state, sctx->state, sizeof(octx->state));
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memcpy(octx->buffer, sctx->buf, sizeof(octx->buffer));
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return 0;
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}
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static int sha1_import(struct shash_desc *desc, const void *in)
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{
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struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
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const struct sha1_state *ictx = in;
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sctx->count = ictx->count;
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memcpy(sctx->state, ictx->state, sizeof(ictx->state));
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memcpy(sctx->buf, ictx->buffer, sizeof(ictx->buffer));
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sctx->func = KIMD_SHA_1;
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return 0;
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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_init,
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.update = s390_sha_update,
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.final = s390_sha_final,
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.export = sha1_export,
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.import = sha1_import,
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.descsize = sizeof(struct s390_sha_ctx),
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.statesize = sizeof(struct sha1_state),
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.base = {
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.cra_name = "sha1",
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.cra_driver_name= "sha1-s390",
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.cra_priority = CRYPT_S390_PRIORITY,
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.cra_flags = CRYPTO_ALG_TYPE_SHASH,
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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_s390_init(void)
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{
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if (!crypt_s390_func_available(KIMD_SHA_1, CRYPT_S390_MSA))
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return -EOPNOTSUPP;
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return crypto_register_shash(&alg);
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}
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static void __exit sha1_s390_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_s390_init);
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module_exit(sha1_s390_fini);
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MODULE_ALIAS("sha1");
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm");
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