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a04549cc DSH |
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> | |
926c41bd | 10 | #include "gost_lcl.h" |
a04549cc DSH |
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= | |
926c41bd DSH |
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 | }; | |
a04549cc DSH |
39 | |
40 | int gost_digest_init(EVP_MD_CTX *ctx) | |
926c41bd | 41 | { |
a04549cc DSH |
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; | |
926c41bd | 47 | } |
a04549cc DSH |
48 | |
49 | int gost_digest_update(EVP_MD_CTX *ctx,const void *data,size_t count) | |
926c41bd | 50 | { |
a04549cc | 51 | return hash_block((gost_hash_ctx *)ctx->md_data,data,count); |
926c41bd | 52 | } |
a04549cc DSH |
53 | |
54 | int gost_digest_final(EVP_MD_CTX *ctx,unsigned char *md) | |
926c41bd | 55 | { |
a04549cc DSH |
56 | return finish_hash((gost_hash_ctx *)ctx->md_data,md); |
57 | ||
926c41bd | 58 | } |
a04549cc DSH |
59 | |
60 | int gost_digest_copy(EVP_MD_CTX *to,const EVP_MD_CTX *from) | |
926c41bd | 61 | { |
0e1dba93 DSH |
62 | struct ossl_gost_digest_ctx *md_ctx=to->md_data; |
63 | if (to->md_data && from->md_data) { | |
64 | memcpy(to->md_data,from->md_data,sizeof(struct ossl_gost_digest_ctx)); | |
65 | md_ctx->dctx.cipher_ctx=&(md_ctx->cctx); | |
66 | } | |
926c41bd DSH |
67 | return 1; |
68 | } | |
a04549cc | 69 | |
926c41bd DSH |
70 | int gost_digest_cleanup(EVP_MD_CTX *ctx) |
71 | { | |
a4346646 | 72 | if (ctx->md_data) |
a04549cc DSH |
73 | memset(ctx->md_data,0,sizeof(struct ossl_gost_digest_ctx)); |
74 | return 1; | |
926c41bd | 75 | } |