| /********************************************************************** |
| * 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; |
| } |