mirror of
https://github.com/torvalds/linux
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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>
149 lines
3.6 KiB
C
149 lines
3.6 KiB
C
/*
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* Cryptographic API.
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*
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* s390 implementation of the SHA256 and SHA224 Secure Hash Algorithm.
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*
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* s390 Version:
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* Copyright IBM Corp. 2005, 2011
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* Author(s): Jan Glauber (jang@de.ibm.com)
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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 sha256_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] = SHA256_H0;
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sctx->state[1] = SHA256_H1;
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sctx->state[2] = SHA256_H2;
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sctx->state[3] = SHA256_H3;
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sctx->state[4] = SHA256_H4;
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sctx->state[5] = SHA256_H5;
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sctx->state[6] = SHA256_H6;
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sctx->state[7] = SHA256_H7;
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sctx->count = 0;
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sctx->func = KIMD_SHA_256;
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return 0;
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}
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static int sha256_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 sha256_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->buf, sctx->buf, sizeof(octx->buf));
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return 0;
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}
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static int sha256_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 sha256_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->buf, sizeof(ictx->buf));
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sctx->func = KIMD_SHA_256;
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return 0;
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}
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static struct shash_alg sha256_alg = {
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.digestsize = SHA256_DIGEST_SIZE,
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.init = sha256_init,
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.update = s390_sha_update,
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.final = s390_sha_final,
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.export = sha256_export,
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.import = sha256_import,
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.descsize = sizeof(struct s390_sha_ctx),
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.statesize = sizeof(struct sha256_state),
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.base = {
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.cra_name = "sha256",
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.cra_driver_name= "sha256-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 = SHA256_BLOCK_SIZE,
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.cra_module = THIS_MODULE,
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}
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};
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static int sha224_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] = SHA224_H0;
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sctx->state[1] = SHA224_H1;
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sctx->state[2] = SHA224_H2;
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sctx->state[3] = SHA224_H3;
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sctx->state[4] = SHA224_H4;
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sctx->state[5] = SHA224_H5;
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sctx->state[6] = SHA224_H6;
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sctx->state[7] = SHA224_H7;
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sctx->count = 0;
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sctx->func = KIMD_SHA_256;
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return 0;
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}
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static struct shash_alg sha224_alg = {
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.digestsize = SHA224_DIGEST_SIZE,
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.init = sha224_init,
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.update = s390_sha_update,
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.final = s390_sha_final,
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.export = sha256_export,
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.import = sha256_import,
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.descsize = sizeof(struct s390_sha_ctx),
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.statesize = sizeof(struct sha256_state),
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.base = {
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.cra_name = "sha224",
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.cra_driver_name= "sha224-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 = 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_s390_init(void)
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{
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int ret;
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if (!crypt_s390_func_available(KIMD_SHA_256, CRYPT_S390_MSA))
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return -EOPNOTSUPP;
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ret = crypto_register_shash(&sha256_alg);
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if (ret < 0)
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goto out;
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ret = crypto_register_shash(&sha224_alg);
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if (ret < 0)
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crypto_unregister_shash(&sha256_alg);
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out:
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return ret;
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}
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static void __exit sha256_s390_fini(void)
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{
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crypto_unregister_shash(&sha224_alg);
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crypto_unregister_shash(&sha256_alg);
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}
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module_init(sha256_s390_init);
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module_exit(sha256_s390_fini);
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MODULE_ALIAS("sha256");
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MODULE_ALIAS("sha224");
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("SHA256 and SHA224 Secure Hash Algorithm");
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