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