1 /**********************************************************************
3 * Copyright (c) 2005-2006 Cryptocom LTD *
4 * This file is distributed under the same license as OpenSSL *
6 * OpenSSL interface to GOST R 34.11-94 hash functions *
7 * Requires OpenSSL 0.9.9 for compilation *
8 **********************************************************************/
12 #include "e_gost_err.h"
14 /* implementation of GOST 34.11 hash function See gost_md.c*/
15 static int gost_digest_init(EVP_MD_CTX *ctx);
16 static int gost_digest_update(EVP_MD_CTX *ctx, const void *data,
18 static int gost_digest_final(EVP_MD_CTX *ctx, unsigned char *md);
19 static int gost_digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from);
20 static int gost_digest_cleanup(EVP_MD_CTX *ctx);
22 EVP_MD digest_gost = {
33 sizeof(struct ossl_gost_digest_ctx),
37 int gost_digest_init(EVP_MD_CTX *ctx)
39 struct ossl_gost_digest_ctx *c = EVP_MD_CTX_md_data(ctx);
40 memset(&(c->dctx), 0, sizeof(gost_hash_ctx));
41 gost_init(&(c->cctx), &GostR3411_94_CryptoProParamSet);
42 c->dctx.cipher_ctx = &(c->cctx);
46 int gost_digest_update(EVP_MD_CTX *ctx, const void *data, size_t count)
48 return hash_block((gost_hash_ctx *) EVP_MD_CTX_md_data(ctx), data, count);
51 int gost_digest_final(EVP_MD_CTX *ctx, unsigned char *md)
53 return finish_hash((gost_hash_ctx *) EVP_MD_CTX_md_data(ctx), md);
57 int gost_digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
59 struct ossl_gost_digest_ctx *md_ctx = EVP_MD_CTX_md_data(to);
60 if (EVP_MD_CTX_md_data(to) && EVP_MD_CTX_md_data(from)) {
61 memcpy(EVP_MD_CTX_md_data(to), EVP_MD_CTX_md_data(from),
62 sizeof(struct ossl_gost_digest_ctx));
63 md_ctx->dctx.cipher_ctx = &(md_ctx->cctx);
68 int gost_digest_cleanup(EVP_MD_CTX *ctx)
70 if (EVP_MD_CTX_md_data(ctx))
71 memset(EVP_MD_CTX_md_data(ctx), 0, sizeof(struct ossl_gost_digest_ctx));