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authorcvs2svn <admin@example.com>2015-03-08 16:48:48 +0000
committercvs2svn <admin@example.com>2015-03-08 16:48:48 +0000
commitda1a9ad3a4a867ba6569c05e6fca66d7f296c553 (patch)
tree44872802e872bdfd60730fa9cf01d9d5751251c1 /src/lib/libcrypto/gost/gost89imit_pmeth.c
parent973703db67a8e73d70e63afa8f2cde19da09144d (diff)
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Diffstat (limited to 'src/lib/libcrypto/gost/gost89imit_pmeth.c')
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diff --git a/src/lib/libcrypto/gost/gost89imit_pmeth.c b/src/lib/libcrypto/gost/gost89imit_pmeth.c
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1/* $OpenBSD: gost89imit_pmeth.c,v 1.3 2014/11/13 20:29:55 miod Exp $ */
2/*
3 * Copyright (c) 2014 Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
4 * Copyright (c) 2005-2006 Cryptocom LTD
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 *
18 * 3. All advertising materials mentioning features or use of this
19 * software must display the following acknowledgment:
20 * "This product includes software developed by the OpenSSL Project
21 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
22 *
23 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
24 * endorse or promote products derived from this software without
25 * prior written permission. For written permission, please contact
26 * openssl-core@openssl.org.
27 *
28 * 5. Products derived from this software may not be called "OpenSSL"
29 * nor may "OpenSSL" appear in their names without prior written
30 * permission of the OpenSSL Project.
31 *
32 * 6. Redistributions of any form whatsoever must retain the following
33 * acknowledgment:
34 * "This product includes software developed by the OpenSSL Project
35 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
36 *
37 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
38 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
39 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
40 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
43 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
44 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
45 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
46 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
47 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
48 * OF THE POSSIBILITY OF SUCH DAMAGE.
49 * ====================================================================
50 */
51
52#include <string.h>
53
54#include <openssl/opensslconf.h>
55
56#ifndef OPENSSL_NO_GOST
57#include <openssl/evp.h>
58#include <openssl/err.h>
59#include <openssl/gost.h>
60#include <openssl/x509v3.h> /* For string_to_hex */
61
62#include "evp_locl.h"
63#include "gost_locl.h"
64
65struct gost_mac_pmeth_data {
66 EVP_MD *md;
67 unsigned char key[32];
68 unsigned key_set :1;
69};
70
71static int
72pkey_gost_mac_init(EVP_PKEY_CTX *ctx)
73{
74 struct gost_mac_pmeth_data *data;
75
76 data = calloc(1, sizeof(struct gost_mac_pmeth_data));
77 if (data == NULL)
78 return 0;
79 EVP_PKEY_CTX_set_data(ctx, data);
80 return 1;
81}
82
83static void
84pkey_gost_mac_cleanup(EVP_PKEY_CTX *ctx)
85{
86 struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
87 free(data);
88}
89
90static int
91pkey_gost_mac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
92{
93 struct gost_mac_pmeth_data *dst_data, *src_data;
94
95 if (pkey_gost_mac_init(dst) == 0)
96 return 0;
97
98 src_data = EVP_PKEY_CTX_get_data(src);
99 dst_data = EVP_PKEY_CTX_get_data(dst);
100
101 *dst_data = *src_data;
102
103 return 1;
104}
105
106static int
107pkey_gost_mac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
108{
109 struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
110 unsigned char *keydata;
111
112 if (!data->key_set) {
113 GOSTerr(GOST_F_PKEY_GOST_MAC_KEYGEN, GOST_R_MAC_KEY_NOT_SET);
114 return 0;
115 }
116
117 keydata = malloc(32);
118 if (keydata == NULL) {
119 GOSTerr(GOST_F_PKEY_GOST_MAC_KEYGEN, ERR_R_MALLOC_FAILURE);
120 return 0;
121 }
122 memcpy(keydata, data->key, 32);
123 EVP_PKEY_assign(pkey, NID_id_Gost28147_89_MAC, keydata);
124
125 return 1;
126}
127
128static int
129pkey_gost_mac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
130{
131 struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
132
133 switch (type) {
134 case EVP_PKEY_CTRL_MD:
135 if (EVP_MD_type(p2) != NID_id_Gost28147_89_MAC) {
136 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,
137 GOST_R_INVALID_DIGEST_TYPE);
138 return 0;
139 }
140 data->md = p2;
141 return 1;
142
143 case EVP_PKEY_CTRL_SET_MAC_KEY:
144 if (p1 != 32) {
145 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,
146 GOST_R_INVALID_MAC_KEY_LENGTH);
147 return 0;
148 }
149
150 memcpy(data->key, p2, 32);
151 data->key_set = 1;
152 return 1;
153
154 case EVP_PKEY_CTRL_DIGESTINIT:
155 {
156 EVP_MD_CTX *mctx = p2;
157 void *key;
158
159 if (!data->key_set) {
160 EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
161 if (pkey == NULL) {
162 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,
163 GOST_R_MAC_KEY_NOT_SET);
164 return 0;
165 }
166 key = EVP_PKEY_get0(pkey);
167 if (key == NULL) {
168 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,
169 GOST_R_MAC_KEY_NOT_SET);
170 return 0;
171 }
172 } else {
173 key = &(data->key);
174 }
175 if (mctx->digest->md_ctrl == NULL)
176 return 0;
177 return mctx->digest->md_ctrl(mctx, EVP_MD_CTRL_SET_KEY, 32 * 8,
178 key);
179 }
180
181 }
182
183 return -2;
184}
185
186static int
187pkey_gost_mac_ctrl_str(EVP_PKEY_CTX *ctx, const char *type, const char *value)
188{
189 if (value == NULL)
190 return 0;
191 if (strcmp(type, "key") == 0) {
192 void *p = (void *)value;
193 return pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
194 strlen(value), p);
195 }
196 if (strcmp(type, "hexkey") == 0) {
197 unsigned char *key;
198 int r;
199 long keylen;
200
201 key = string_to_hex(value, &keylen);
202 if (key == NULL)
203 return 0;
204 r = pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, keylen,
205 key);
206 free(key);
207 return r;
208 }
209 return -2;
210}
211
212static int
213pkey_gost_mac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
214{
215 return 1;
216}
217
218static int
219pkey_gost_mac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
220 EVP_MD_CTX *mctx)
221{
222 /* for platforms where sizeof(int) != sizeof(size_t)*/
223 unsigned int tmpsiglen = *siglen;
224 int ret;
225
226 if (sig == NULL) {
227 *siglen = 4;
228 return 1;
229 }
230
231 ret = EVP_DigestFinal_ex(mctx, sig, &tmpsiglen);
232 *siglen = tmpsiglen;
233 return ret;
234}
235
236const EVP_PKEY_METHOD gostimit_pkey_meth = {
237 .pkey_id = EVP_PKEY_GOSTIMIT,
238
239 .init = pkey_gost_mac_init,
240 .cleanup = pkey_gost_mac_cleanup,
241 .copy = pkey_gost_mac_copy,
242
243 .keygen = pkey_gost_mac_keygen,
244
245 .signctx_init = pkey_gost_mac_signctx_init,
246 .signctx = pkey_gost_mac_signctx,
247
248 .ctrl = pkey_gost_mac_ctrl,
249 .ctrl_str = pkey_gost_mac_ctrl_str,
250};
251
252#endif
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