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103 lines
2.6 KiB
103 lines
2.6 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 SHA1 Secure Hash Algorithm. |
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* |
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* Derived from cryptoapi implementation, adapted for in-place |
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* scatterlist interface. Originally based on the public domain |
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* implementation written by Steve Reid. |
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* |
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* s390 Version: |
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* Copyright IBM Corp. 2003, 2007 |
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* Author(s): Thomas Spatzier |
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* Jan Glauber ([email protected]) |
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* |
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* Derived from "crypto/sha1_generic.c" |
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* Copyright (c) Alan Smithee. |
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* Copyright (c) Andrew McDonald <[email protected]> |
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* Copyright (c) Jean-Francois Dive <[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/sha1.h> |
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#include <asm/cpacf.h> |
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#include "sha.h" |
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static int s390_sha1_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] = SHA1_H0; |
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sctx->state[1] = SHA1_H1; |
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sctx->state[2] = SHA1_H2; |
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sctx->state[3] = SHA1_H3; |
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sctx->state[4] = SHA1_H4; |
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sctx->count = 0; |
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sctx->func = CPACF_KIMD_SHA_1; |
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return 0; |
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} |
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static int s390_sha1_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 sha1_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->buffer, sctx->buf, sizeof(octx->buffer)); |
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return 0; |
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} |
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static int s390_sha1_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 sha1_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->buffer, sizeof(ictx->buffer)); |
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sctx->func = CPACF_KIMD_SHA_1; |
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return 0; |
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} |
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static struct shash_alg alg = { |
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.digestsize = SHA1_DIGEST_SIZE, |
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.init = s390_sha1_init, |
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.update = s390_sha_update, |
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.final = s390_sha_final, |
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.export = s390_sha1_export, |
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.import = s390_sha1_import, |
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.descsize = sizeof(struct s390_sha_ctx), |
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.statesize = sizeof(struct sha1_state), |
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.base = { |
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.cra_name = "sha1", |
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.cra_driver_name= "sha1-s390", |
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.cra_priority = 300, |
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.cra_blocksize = SHA1_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 sha1_s390_init(void) |
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{ |
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if (!cpacf_query_func(CPACF_KIMD, CPACF_KIMD_SHA_1)) |
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return -ENODEV; |
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return crypto_register_shash(&alg); |
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} |
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static void __exit sha1_s390_fini(void) |
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{ |
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crypto_unregister_shash(&alg); |
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} |
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module_cpu_feature_match(MSA, sha1_s390_init); |
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module_exit(sha1_s390_fini); |
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MODULE_ALIAS_CRYPTO("sha1"); |
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MODULE_LICENSE("GPL"); |
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MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm");
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