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 GOST_digest GostR3411_94_digest = {
23 .nid = NID_id_GostR3411_94,
25 .input_blocksize = 32,
26 .app_datasize = sizeof(struct ossl_gost_digest_ctx),
27 .init = gost_digest_init,
28 .update = gost_digest_update,
29 .final = gost_digest_final,
30 .copy = gost_digest_copy,
31 .cleanup = gost_digest_cleanup,
35 * Single level template accessor.
36 * Note: that you cannot template 0 value.
38 #define TPL(st,field) ( \
39 ((st)->field) ?: TPL_VAL(st,field) \
42 #define TPL_VAL(st,field) ( \
43 ((st)->template ? (st)->template->field : 0) \
46 EVP_MD *GOST_init_digest(GOST_digest *d)
52 if (!(md = EVP_MD_meth_new(d->nid, NID_undef))
53 || !EVP_MD_meth_set_result_size(md, TPL(d, result_size))
54 || !EVP_MD_meth_set_input_blocksize(md, TPL(d, input_blocksize))
55 || !EVP_MD_meth_set_app_datasize(md, TPL(d, app_datasize))
56 || !EVP_MD_meth_set_flags(md, d->flags | TPL_VAL(d, flags))
57 || !EVP_MD_meth_set_init(md, TPL(d, init))
58 || !EVP_MD_meth_set_update(md, TPL(d, update))
59 || !EVP_MD_meth_set_final(md, TPL(d, final))
60 || !EVP_MD_meth_set_copy(md, TPL(d, copy))
61 || !EVP_MD_meth_set_cleanup(md, TPL(d, cleanup))
62 || !EVP_MD_meth_set_ctrl(md, TPL(d, ctrl))) {
70 void GOST_deinit_digest(GOST_digest *d)
72 EVP_MD_meth_free(d->digest);
76 EVP_MD *digest_gost(void)
78 return GOST_init_digest(&GostR3411_94_digest);
81 void digest_gost_destroy(void)
83 GOST_deinit_digest(&GostR3411_94_digest);
86 int gost_digest_init(EVP_MD_CTX *ctx)
88 struct ossl_gost_digest_ctx *c = EVP_MD_CTX_md_data(ctx);
89 memset(&(c->dctx), 0, sizeof(gost_hash_ctx));
90 gost_init(&(c->cctx), &GostR3411_94_CryptoProParamSet);
91 c->dctx.cipher_ctx = &(c->cctx);
95 int gost_digest_update(EVP_MD_CTX *ctx, const void *data, size_t count)
97 return hash_block((gost_hash_ctx *) EVP_MD_CTX_md_data(ctx), data, count);
100 int gost_digest_final(EVP_MD_CTX *ctx, unsigned char *md)
102 return finish_hash((gost_hash_ctx *) EVP_MD_CTX_md_data(ctx), md);
106 int gost_digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
108 struct ossl_gost_digest_ctx *md_ctx = EVP_MD_CTX_md_data(to);
109 if (EVP_MD_CTX_md_data(to) && EVP_MD_CTX_md_data(from)) {
110 memcpy(EVP_MD_CTX_md_data(to), EVP_MD_CTX_md_data(from),
111 sizeof(struct ossl_gost_digest_ctx));
112 md_ctx->dctx.cipher_ctx = &(md_ctx->cctx);
117 int gost_digest_cleanup(EVP_MD_CTX *ctx)
119 if (EVP_MD_CTX_md_data(ctx))
120 memset(EVP_MD_CTX_md_data(ctx), 0,
121 sizeof(struct ossl_gost_digest_ctx));
124 /* vim: set expandtab cinoptions=\:0,l1,t0,g0,(0 sw=4 : */