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143 lines
3.4 KiB
143 lines
3.4 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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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 ([email protected]) |
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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 <linux/cpufeature.h> |
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#include <crypto/sha2.h> |
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#include <asm/cpacf.h> |
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#include "sha.h" |
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static int s390_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 = CPACF_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 = CPACF_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 = s390_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 = 300, |
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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 s390_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 = CPACF_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 = s390_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 = 300, |
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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 (!cpacf_query_func(CPACF_KIMD, CPACF_KIMD_SHA_256)) |
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return -ENODEV; |
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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_cpu_feature_match(MSA, sha256_s390_init); |
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module_exit(sha256_s390_fini); |
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MODULE_ALIAS_CRYPTO("sha256"); |
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MODULE_ALIAS_CRYPTO("sha224"); |
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MODULE_LICENSE("GPL"); |
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MODULE_DESCRIPTION("SHA256 and SHA224 Secure Hash Algorithm");
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