146 lines
3.4 KiB
C
146 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Cryptographic API.
|
|
*
|
|
* s390 implementation of the SHA256 and SHA224 Secure Hash Algorithm.
|
|
*
|
|
* s390 Version:
|
|
* Copyright IBM Corp. 2005, 2011
|
|
* Author(s): Jan Glauber (jang@de.ibm.com)
|
|
*/
|
|
#include <crypto/internal/hash.h>
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/cpufeature.h>
|
|
#include <crypto/sha.h>
|
|
#include <asm/cpacf.h>
|
|
|
|
#include "sha.h"
|
|
|
|
static int sha256_init(struct shash_desc *desc)
|
|
{
|
|
struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
|
|
|
|
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 = CPACF_KIMD_SHA_256;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sha256_export(struct shash_desc *desc, void *out)
|
|
{
|
|
struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
|
|
struct sha256_state *octx = out;
|
|
|
|
octx->count = sctx->count;
|
|
memcpy(octx->state, sctx->state, sizeof(octx->state));
|
|
memcpy(octx->buf, sctx->buf, sizeof(octx->buf));
|
|
return 0;
|
|
}
|
|
|
|
static int sha256_import(struct shash_desc *desc, const void *in)
|
|
{
|
|
struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
|
|
const struct sha256_state *ictx = in;
|
|
|
|
sctx->count = ictx->count;
|
|
memcpy(sctx->state, ictx->state, sizeof(ictx->state));
|
|
memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf));
|
|
sctx->func = CPACF_KIMD_SHA_256;
|
|
return 0;
|
|
}
|
|
|
|
static struct shash_alg sha256_alg = {
|
|
.digestsize = SHA256_DIGEST_SIZE,
|
|
.init = sha256_init,
|
|
.update = s390_sha_update,
|
|
.final = s390_sha_final,
|
|
.export = sha256_export,
|
|
.import = sha256_import,
|
|
.descsize = sizeof(struct s390_sha_ctx),
|
|
.statesize = sizeof(struct sha256_state),
|
|
.base = {
|
|
.cra_name = "sha256",
|
|
.cra_driver_name= "sha256-s390",
|
|
.cra_priority = 300,
|
|
.cra_flags = CRYPTO_ALG_TYPE_SHASH,
|
|
.cra_blocksize = SHA256_BLOCK_SIZE,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
};
|
|
|
|
static int sha224_init(struct shash_desc *desc)
|
|
{
|
|
struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
|
|
|
|
sctx->state[0] = SHA224_H0;
|
|
sctx->state[1] = SHA224_H1;
|
|
sctx->state[2] = SHA224_H2;
|
|
sctx->state[3] = SHA224_H3;
|
|
sctx->state[4] = SHA224_H4;
|
|
sctx->state[5] = SHA224_H5;
|
|
sctx->state[6] = SHA224_H6;
|
|
sctx->state[7] = SHA224_H7;
|
|
sctx->count = 0;
|
|
sctx->func = CPACF_KIMD_SHA_256;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct shash_alg sha224_alg = {
|
|
.digestsize = SHA224_DIGEST_SIZE,
|
|
.init = sha224_init,
|
|
.update = s390_sha_update,
|
|
.final = s390_sha_final,
|
|
.export = sha256_export,
|
|
.import = sha256_import,
|
|
.descsize = sizeof(struct s390_sha_ctx),
|
|
.statesize = sizeof(struct sha256_state),
|
|
.base = {
|
|
.cra_name = "sha224",
|
|
.cra_driver_name= "sha224-s390",
|
|
.cra_priority = 300,
|
|
.cra_flags = CRYPTO_ALG_TYPE_SHASH,
|
|
.cra_blocksize = SHA224_BLOCK_SIZE,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
};
|
|
|
|
static int __init sha256_s390_init(void)
|
|
{
|
|
int ret;
|
|
|
|
if (!cpacf_query_func(CPACF_KIMD, CPACF_KIMD_SHA_256))
|
|
return -EOPNOTSUPP;
|
|
ret = crypto_register_shash(&sha256_alg);
|
|
if (ret < 0)
|
|
goto out;
|
|
ret = crypto_register_shash(&sha224_alg);
|
|
if (ret < 0)
|
|
crypto_unregister_shash(&sha256_alg);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static void __exit sha256_s390_fini(void)
|
|
{
|
|
crypto_unregister_shash(&sha224_alg);
|
|
crypto_unregister_shash(&sha256_alg);
|
|
}
|
|
|
|
module_cpu_feature_match(MSA, sha256_s390_init);
|
|
module_exit(sha256_s390_fini);
|
|
|
|
MODULE_ALIAS_CRYPTO("sha256");
|
|
MODULE_ALIAS_CRYPTO("sha224");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("SHA256 and SHA224 Secure Hash Algorithm");
|