1 /**********************************************************************
3 * Copyright (c) 2005-2006 Cryptocom LTD *
4 * Copyright (c) 2020 Vitaly Chikunov <vt@altlinux.org> *
5 * This file is distributed under the same license as OpenSSL *
7 * OpenSSL interface to GOST R 34.11-94 hash functions *
8 * Requires OpenSSL 0.9.9 for compilation *
9 **********************************************************************/
13 #include "e_gost_err.h"
15 /* implementation of GOST 34.11 hash function See gost_md.c*/
16 static int gost_digest_init(EVP_MD_CTX *ctx);
17 static int gost_digest_update(EVP_MD_CTX *ctx, const void *data,
19 static int gost_digest_final(EVP_MD_CTX *ctx, unsigned char *md);
20 static int gost_digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from);
21 static int gost_digest_cleanup(EVP_MD_CTX *ctx);
23 GOST_digest GostR3411_94_digest = {
24 .nid = NID_id_GostR3411_94,
26 .input_blocksize = 32,
27 .app_datasize = sizeof(struct ossl_gost_digest_ctx),
28 .init = gost_digest_init,
29 .update = gost_digest_update,
30 .final = gost_digest_final,
31 .copy = gost_digest_copy,
32 .cleanup = gost_digest_cleanup,
36 * Single level template accessor.
37 * Note: that you cannot template 0 value.
39 #define TPL(st,field) ( \
40 ((st)->field) ?: TPL_VAL(st,field) \
43 #define TPL_VAL(st,field) ( \
44 ((st)->template ? (st)->template->field : 0) \
47 EVP_MD *GOST_init_digest(GOST_digest *d)
53 if (!(md = EVP_MD_meth_new(d->nid, NID_undef))
54 || !EVP_MD_meth_set_result_size(md, TPL(d, result_size))
55 || !EVP_MD_meth_set_input_blocksize(md, TPL(d, input_blocksize))
56 || !EVP_MD_meth_set_app_datasize(md, TPL(d, app_datasize))
57 || !EVP_MD_meth_set_flags(md, d->flags | TPL_VAL(d, flags))
58 || !EVP_MD_meth_set_init(md, TPL(d, init))
59 || !EVP_MD_meth_set_update(md, TPL(d, update))
60 || !EVP_MD_meth_set_final(md, TPL(d, final))
61 || !EVP_MD_meth_set_copy(md, TPL(d, copy))
62 || !EVP_MD_meth_set_cleanup(md, TPL(d, cleanup))
63 || !EVP_MD_meth_set_ctrl(md, TPL(d, ctrl))) {
68 EVP_add_digest_alias(EVP_MD_name(md), d->alias);
73 void GOST_deinit_digest(GOST_digest *d)
76 EVP_delete_digest_alias(d->alias);
77 EVP_MD_meth_free(d->digest);
81 static int gost_digest_init(EVP_MD_CTX *ctx)
83 struct ossl_gost_digest_ctx *c = EVP_MD_CTX_md_data(ctx);
84 memset(&(c->dctx), 0, sizeof(gost_hash_ctx));
85 gost_init(&(c->cctx), &GostR3411_94_CryptoProParamSet);
86 c->dctx.cipher_ctx = &(c->cctx);
90 static int gost_digest_update(EVP_MD_CTX *ctx, const void *data, size_t count)
92 return hash_block((gost_hash_ctx *) EVP_MD_CTX_md_data(ctx), data, count);
95 static int gost_digest_final(EVP_MD_CTX *ctx, unsigned char *md)
97 return finish_hash((gost_hash_ctx *) EVP_MD_CTX_md_data(ctx), md);
101 static int gost_digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
103 struct ossl_gost_digest_ctx *md_ctx = EVP_MD_CTX_md_data(to);
104 if (EVP_MD_CTX_md_data(to) && EVP_MD_CTX_md_data(from)) {
105 memcpy(EVP_MD_CTX_md_data(to), EVP_MD_CTX_md_data(from),
106 sizeof(struct ossl_gost_digest_ctx));
107 md_ctx->dctx.cipher_ctx = &(md_ctx->cctx);
112 static int gost_digest_cleanup(EVP_MD_CTX *ctx)
114 if (EVP_MD_CTX_md_data(ctx))
115 memset(EVP_MD_CTX_md_data(ctx), 0,
116 sizeof(struct ossl_gost_digest_ctx));
119 /* vim: set expandtab cinoptions=\:0,l1,t0,g0,(0 sw=4 : */