mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
154 lines
3.5 KiB
154 lines
3.5 KiB
// SPDX-License-Identifier: GPL-2.0+ |
|
/* |
|
* Cryptographic API. |
|
* |
|
* s390 implementation of the SHA512 and SHA384 Secure Hash Algorithm. |
|
* |
|
* Copyright IBM Corp. 2019 |
|
* Author(s): Joerg Schmidbauer ([email protected]) |
|
*/ |
|
#include <crypto/internal/hash.h> |
|
#include <linux/init.h> |
|
#include <linux/module.h> |
|
#include <linux/cpufeature.h> |
|
#include <crypto/sha3.h> |
|
#include <asm/cpacf.h> |
|
|
|
#include "sha.h" |
|
|
|
static int sha3_512_init(struct shash_desc *desc) |
|
{ |
|
struct s390_sha_ctx *sctx = shash_desc_ctx(desc); |
|
|
|
memset(sctx->state, 0, sizeof(sctx->state)); |
|
sctx->count = 0; |
|
sctx->func = CPACF_KIMD_SHA3_512; |
|
|
|
return 0; |
|
} |
|
|
|
static int sha3_512_export(struct shash_desc *desc, void *out) |
|
{ |
|
struct s390_sha_ctx *sctx = shash_desc_ctx(desc); |
|
struct sha3_state *octx = out; |
|
|
|
octx->rsiz = sctx->count; |
|
octx->rsizw = sctx->count >> 32; |
|
|
|
memcpy(octx->st, sctx->state, sizeof(octx->st)); |
|
memcpy(octx->buf, sctx->buf, sizeof(octx->buf)); |
|
|
|
return 0; |
|
} |
|
|
|
static int sha3_512_import(struct shash_desc *desc, const void *in) |
|
{ |
|
struct s390_sha_ctx *sctx = shash_desc_ctx(desc); |
|
const struct sha3_state *ictx = in; |
|
|
|
if (unlikely(ictx->rsizw)) |
|
return -ERANGE; |
|
sctx->count = ictx->rsiz; |
|
|
|
memcpy(sctx->state, ictx->st, sizeof(ictx->st)); |
|
memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf)); |
|
sctx->func = CPACF_KIMD_SHA3_512; |
|
|
|
return 0; |
|
} |
|
|
|
static int sha3_384_import(struct shash_desc *desc, const void *in) |
|
{ |
|
struct s390_sha_ctx *sctx = shash_desc_ctx(desc); |
|
const struct sha3_state *ictx = in; |
|
|
|
if (unlikely(ictx->rsizw)) |
|
return -ERANGE; |
|
sctx->count = ictx->rsiz; |
|
|
|
memcpy(sctx->state, ictx->st, sizeof(ictx->st)); |
|
memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf)); |
|
sctx->func = CPACF_KIMD_SHA3_384; |
|
|
|
return 0; |
|
} |
|
|
|
static struct shash_alg sha3_512_alg = { |
|
.digestsize = SHA3_512_DIGEST_SIZE, |
|
.init = sha3_512_init, |
|
.update = s390_sha_update, |
|
.final = s390_sha_final, |
|
.export = sha3_512_export, |
|
.import = sha3_512_import, |
|
.descsize = sizeof(struct s390_sha_ctx), |
|
.statesize = sizeof(struct sha3_state), |
|
.base = { |
|
.cra_name = "sha3-512", |
|
.cra_driver_name = "sha3-512-s390", |
|
.cra_priority = 300, |
|
.cra_blocksize = SHA3_512_BLOCK_SIZE, |
|
.cra_module = THIS_MODULE, |
|
} |
|
}; |
|
|
|
MODULE_ALIAS_CRYPTO("sha3-512"); |
|
|
|
static int sha3_384_init(struct shash_desc *desc) |
|
{ |
|
struct s390_sha_ctx *sctx = shash_desc_ctx(desc); |
|
|
|
memset(sctx->state, 0, sizeof(sctx->state)); |
|
sctx->count = 0; |
|
sctx->func = CPACF_KIMD_SHA3_384; |
|
|
|
return 0; |
|
} |
|
|
|
static struct shash_alg sha3_384_alg = { |
|
.digestsize = SHA3_384_DIGEST_SIZE, |
|
.init = sha3_384_init, |
|
.update = s390_sha_update, |
|
.final = s390_sha_final, |
|
.export = sha3_512_export, /* same as for 512 */ |
|
.import = sha3_384_import, /* function code different! */ |
|
.descsize = sizeof(struct s390_sha_ctx), |
|
.statesize = sizeof(struct sha3_state), |
|
.base = { |
|
.cra_name = "sha3-384", |
|
.cra_driver_name = "sha3-384-s390", |
|
.cra_priority = 300, |
|
.cra_blocksize = SHA3_384_BLOCK_SIZE, |
|
.cra_ctxsize = sizeof(struct s390_sha_ctx), |
|
.cra_module = THIS_MODULE, |
|
} |
|
}; |
|
|
|
MODULE_ALIAS_CRYPTO("sha3-384"); |
|
|
|
static int __init init(void) |
|
{ |
|
int ret; |
|
|
|
if (!cpacf_query_func(CPACF_KIMD, CPACF_KIMD_SHA3_512)) |
|
return -ENODEV; |
|
ret = crypto_register_shash(&sha3_512_alg); |
|
if (ret < 0) |
|
goto out; |
|
ret = crypto_register_shash(&sha3_384_alg); |
|
if (ret < 0) |
|
crypto_unregister_shash(&sha3_512_alg); |
|
out: |
|
return ret; |
|
} |
|
|
|
static void __exit fini(void) |
|
{ |
|
crypto_unregister_shash(&sha3_512_alg); |
|
crypto_unregister_shash(&sha3_384_alg); |
|
} |
|
|
|
module_cpu_feature_match(MSA, init); |
|
module_exit(fini); |
|
|
|
MODULE_LICENSE("GPL"); |
|
MODULE_DESCRIPTION("SHA3-512 and SHA3-384 Secure Hash Algorithm");
|
|
|