GOST public key algorithm ENGINE donated to the OpenSSL by Cryptocom.
[openssl.git] / engines / ccgost / md_gost.c
1 /**********************************************************************
2  *                          md_gost.c                                 *
3  *             Copyright (c) 2005-2006 Cryptocom LTD                  *
4  *         This file is distributed under the same license as OpenSSL *
5  *                                                                    *
6  *       OpenSSL interface to GOST R 34.11-94 hash functions          *
7  *          Requires OpenSSL 0.9.9 for compilation                    *
8  **********************************************************************/
9 #include <string.h>
10 #include "md.h"
11 #include "gosthash.h"
12 #include "e_gost_err.h"
13
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, size_t count);
17 static int gost_digest_final(EVP_MD_CTX *ctx,unsigned char *md);
18 static int gost_digest_copy(EVP_MD_CTX *to,const EVP_MD_CTX *from);
19 static int gost_digest_cleanup(EVP_MD_CTX *ctx);
20
21 EVP_MD digest_gost=  
22 {
23                 NID_id_GostR3411_94,
24                 NID_undef,
25                 32,
26                 EVP_MD_FLAG_PKEY_METHOD_SIGNATURE,
27                 gost_digest_init,
28                 gost_digest_update,
29                 gost_digest_final,
30                 gost_digest_copy,
31                 gost_digest_cleanup,
32                 NULL,
33                 NULL,
34                 {NID_undef,NID_undef,0,0,0},
35                 32,
36                 sizeof(struct ossl_gost_digest_ctx ),
37                 NULL
38 };
39
40 int gost_digest_init(EVP_MD_CTX *ctx) 
41 {
42         struct ossl_gost_digest_ctx *c = ctx->md_data;
43         memset(&(c->dctx),0,sizeof(gost_hash_ctx));
44         gost_init(&(c->cctx),&GostR3411_94_CryptoProParamSet);
45         c->dctx.cipher_ctx= &(c->cctx);
46         return 1;
47 }
48
49 int gost_digest_update(EVP_MD_CTX *ctx,const void *data,size_t count) 
50 {
51         return hash_block((gost_hash_ctx *)ctx->md_data,data,count);    
52 }
53
54 int gost_digest_final(EVP_MD_CTX *ctx,unsigned char *md)
55 {
56         return finish_hash((gost_hash_ctx *)ctx->md_data,md);
57         
58 }
59
60 int gost_digest_copy(EVP_MD_CTX *to,const EVP_MD_CTX *from) 
61 {
62                 memcpy(to->md_data,from->md_data,sizeof(struct ossl_gost_digest_ctx));
63                 return 1;
64 }               
65
66 int gost_digest_cleanup(EVP_MD_CTX *ctx) {
67         memset(ctx->md_data,0,sizeof(struct ossl_gost_digest_ctx));
68         return 1;
69 }