77 lines
2.4 KiB
C
77 lines
2.4 KiB
C
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/**********************************************************************
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* md_gost.c *
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* Copyright (c) 2005-2006 Cryptocom LTD *
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* This file is distributed under the same license as OpenSSL *
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* *
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* OpenSSL interface to GOST R 34.11-94 hash functions *
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* Requires OpenSSL 0.9.9 for compilation *
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**********************************************************************/
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#include <string.h>
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#include "gost_lcl.h"
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#include "gosthash.h"
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#include "e_gost_err.h"
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/* implementation of GOST 34.11 hash function See gost_md.c*/
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static int gost_digest_init(EVP_MD_CTX *ctx);
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static int gost_digest_update(EVP_MD_CTX *ctx, const void *data,
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size_t count);
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static int gost_digest_final(EVP_MD_CTX *ctx, unsigned char *md);
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static int gost_digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from);
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static int gost_digest_cleanup(EVP_MD_CTX *ctx);
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EVP_MD digest_gost = {
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NID_id_GostR3411_94,
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NID_undef,
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32,
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EVP_MD_FLAG_PKEY_METHOD_SIGNATURE,
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gost_digest_init,
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gost_digest_update,
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gost_digest_final,
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gost_digest_copy,
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gost_digest_cleanup,
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NULL,
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NULL,
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{NID_undef, NID_undef, 0, 0, 0},
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32,
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sizeof(struct ossl_gost_digest_ctx),
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NULL
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};
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int gost_digest_init(EVP_MD_CTX *ctx)
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{
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struct ossl_gost_digest_ctx *c = ctx->md_data;
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memset(&(c->dctx), 0, sizeof(gost_hash_ctx));
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gost_init(&(c->cctx), &GostR3411_94_CryptoProParamSet);
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c->dctx.cipher_ctx = &(c->cctx);
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return 1;
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}
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int gost_digest_update(EVP_MD_CTX *ctx, const void *data, size_t count)
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{
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return hash_block((gost_hash_ctx *) ctx->md_data, data, count);
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}
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int gost_digest_final(EVP_MD_CTX *ctx, unsigned char *md)
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{
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return finish_hash((gost_hash_ctx *) ctx->md_data, md);
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}
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int gost_digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
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{
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struct ossl_gost_digest_ctx *md_ctx = to->md_data;
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if (to->md_data && from->md_data) {
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memcpy(to->md_data, from->md_data,
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sizeof(struct ossl_gost_digest_ctx));
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md_ctx->dctx.cipher_ctx = &(md_ctx->cctx);
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}
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return 1;
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}
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int gost_digest_cleanup(EVP_MD_CTX *ctx)
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{
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if (ctx->md_data)
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memset(ctx->md_data, 0, sizeof(struct ossl_gost_digest_ctx));
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return 1;
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}
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