604973f1fe
The sha_{update|final} functions are similar for every sha variant.
Since that is error-prone and redundant replace these functions by
a shared generic implementation for s390.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/*
|
|
* Cryptographic API.
|
|
*
|
|
* s390 implementation of the SHA256 Secure Hash Algorithm.
|
|
*
|
|
* s390 Version:
|
|
* Copyright IBM Corp. 2005,2007
|
|
* Author(s): Jan Glauber (jang@de.ibm.com)
|
|
*
|
|
* Derived from "crypto/sha256_generic.c"
|
|
* and "arch/s390/crypto/sha1_s390.c"
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/crypto.h>
|
|
#include <crypto/sha.h>
|
|
|
|
#include "crypt_s390.h"
|
|
#include "sha.h"
|
|
|
|
static void sha256_init(struct crypto_tfm *tfm)
|
|
{
|
|
struct s390_sha_ctx *sctx = crypto_tfm_ctx(tfm);
|
|
|
|
sctx->state[0] = SHA256_H0;
|
|
sctx->state[1] = SHA256_H1;
|
|
sctx->state[2] = SHA256_H2;
|
|
sctx->state[3] = SHA256_H3;
|
|
sctx->state[4] = SHA256_H4;
|
|
sctx->state[5] = SHA256_H5;
|
|
sctx->state[6] = SHA256_H6;
|
|
sctx->state[7] = SHA256_H7;
|
|
sctx->count = 0;
|
|
sctx->func = KIMD_SHA_256;
|
|
}
|
|
|
|
static struct crypto_alg alg = {
|
|
.cra_name = "sha256",
|
|
.cra_driver_name = "sha256-s390",
|
|
.cra_priority = CRYPT_S390_PRIORITY,
|
|
.cra_flags = CRYPTO_ALG_TYPE_DIGEST,
|
|
.cra_blocksize = SHA256_BLOCK_SIZE,
|
|
.cra_ctxsize = sizeof(struct s390_sha_ctx),
|
|
.cra_module = THIS_MODULE,
|
|
.cra_list = LIST_HEAD_INIT(alg.cra_list),
|
|
.cra_u = { .digest = {
|
|
.dia_digestsize = SHA256_DIGEST_SIZE,
|
|
.dia_init = sha256_init,
|
|
.dia_update = s390_sha_update,
|
|
.dia_final = s390_sha_final } }
|
|
};
|
|
|
|
static int sha256_s390_init(void)
|
|
{
|
|
if (!crypt_s390_func_available(KIMD_SHA_256))
|
|
return -EOPNOTSUPP;
|
|
|
|
return crypto_register_alg(&alg);
|
|
}
|
|
|
|
static void __exit sha256_s390_fini(void)
|
|
{
|
|
crypto_unregister_alg(&alg);
|
|
}
|
|
|
|
module_init(sha256_s390_init);
|
|
module_exit(sha256_s390_fini);
|
|
|
|
MODULE_ALIAS("sha256");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("SHA256 Secure Hash Algorithm");
|