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diff --git a/src/lib/libcrypto/ecdh/ech_lib.c b/src/lib/libcrypto/ecdh/ech_lib.c
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1/* crypto/ecdh/ech_lib.c */
2/* ====================================================================
3 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
4 *
5 * The Elliptic Curve Public-Key Crypto Library (ECC Code) included
6 * herein is developed by SUN MICROSYSTEMS, INC., and is contributed
7 * to the OpenSSL project.
8 *
9 * The ECC Code is licensed pursuant to the OpenSSL open source
10 * license provided below.
11 *
12 * The ECDH software is originally written by Douglas Stebila of
13 * Sun Microsystems Laboratories.
14 *
15 */
16/* ====================================================================
17 * Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved.
18 *
19 * Redistribution and use in source and binary forms, with or without
20 * modification, are permitted provided that the following conditions
21 * are met:
22 *
23 * 1. Redistributions of source code must retain the above copyright
24 * notice, this list of conditions and the following disclaimer.
25 *
26 * 2. Redistributions in binary form must reproduce the above copyright
27 * notice, this list of conditions and the following disclaimer in
28 * the documentation and/or other materials provided with the
29 * distribution.
30 *
31 * 3. All advertising materials mentioning features or use of this
32 * software must display the following acknowledgment:
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
35 *
36 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
37 * endorse or promote products derived from this software without
38 * prior written permission. For written permission, please contact
39 * openssl-core@OpenSSL.org.
40 *
41 * 5. Products derived from this software may not be called "OpenSSL"
42 * nor may "OpenSSL" appear in their names without prior written
43 * permission of the OpenSSL Project.
44 *
45 * 6. Redistributions of any form whatsoever must retain the following
46 * acknowledgment:
47 * "This product includes software developed by the OpenSSL Project
48 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
51 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
53 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
54 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
56 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
57 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
59 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
60 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
61 * OF THE POSSIBILITY OF SUCH DAMAGE.
62 * ====================================================================
63 *
64 * This product includes cryptographic software written by Eric Young
65 * (eay@cryptsoft.com). This product includes software written by Tim
66 * Hudson (tjh@cryptsoft.com).
67 *
68 */
69
70#include "ech_locl.h"
71#include <string.h>
72#ifndef OPENSSL_NO_ENGINE
73#include <openssl/engine.h>
74#endif
75#include <openssl/err.h>
76#ifdef OPENSSL_FIPS
77#include <openssl/fips.h>
78#endif
79
80const char ECDH_version[]="ECDH" OPENSSL_VERSION_PTEXT;
81
82static const ECDH_METHOD *default_ECDH_method = NULL;
83
84static void *ecdh_data_new(void);
85static void *ecdh_data_dup(void *);
86static void ecdh_data_free(void *);
87
88void ECDH_set_default_method(const ECDH_METHOD *meth)
89 {
90 default_ECDH_method = meth;
91 }
92
93const ECDH_METHOD *ECDH_get_default_method(void)
94 {
95 if(!default_ECDH_method)
96 {
97#ifdef OPENSSL_FIPS
98 if (FIPS_mode())
99 return FIPS_ecdh_openssl();
100 else
101 return ECDH_OpenSSL();
102#else
103 default_ECDH_method = ECDH_OpenSSL();
104#endif
105 }
106 return default_ECDH_method;
107 }
108
109int ECDH_set_method(EC_KEY *eckey, const ECDH_METHOD *meth)
110 {
111 ECDH_DATA *ecdh;
112
113 ecdh = ecdh_check(eckey);
114
115 if (ecdh == NULL)
116 return 0;
117
118#if 0
119 mtmp = ecdh->meth;
120 if (mtmp->finish)
121 mtmp->finish(eckey);
122#endif
123#ifndef OPENSSL_NO_ENGINE
124 if (ecdh->engine)
125 {
126 ENGINE_finish(ecdh->engine);
127 ecdh->engine = NULL;
128 }
129#endif
130 ecdh->meth = meth;
131#if 0
132 if (meth->init)
133 meth->init(eckey);
134#endif
135 return 1;
136 }
137
138static ECDH_DATA *ECDH_DATA_new_method(ENGINE *engine)
139 {
140 ECDH_DATA *ret;
141
142 ret=(ECDH_DATA *)OPENSSL_malloc(sizeof(ECDH_DATA));
143 if (ret == NULL)
144 {
145 ECDHerr(ECDH_F_ECDH_DATA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
146 return(NULL);
147 }
148
149 ret->init = NULL;
150
151 ret->meth = ECDH_get_default_method();
152 ret->engine = engine;
153#ifndef OPENSSL_NO_ENGINE
154 if (!ret->engine)
155 ret->engine = ENGINE_get_default_ECDH();
156 if (ret->engine)
157 {
158 ret->meth = ENGINE_get_ECDH(ret->engine);
159 if (!ret->meth)
160 {
161 ECDHerr(ECDH_F_ECDH_DATA_NEW_METHOD, ERR_R_ENGINE_LIB);
162 ENGINE_finish(ret->engine);
163 OPENSSL_free(ret);
164 return NULL;
165 }
166 }
167#endif
168
169 ret->flags = ret->meth->flags;
170 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_ECDH, ret, &ret->ex_data);
171#if 0
172 if ((ret->meth->init != NULL) && !ret->meth->init(ret))
173 {
174 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ECDH, ret, &ret->ex_data);
175 OPENSSL_free(ret);
176 ret=NULL;
177 }
178#endif
179 return(ret);
180 }
181
182static void *ecdh_data_new(void)
183 {
184 return (void *)ECDH_DATA_new_method(NULL);
185 }
186
187static void *ecdh_data_dup(void *data)
188{
189 ECDH_DATA *r = (ECDH_DATA *)data;
190
191 /* XXX: dummy operation */
192 if (r == NULL)
193 return NULL;
194
195 return (void *)ecdh_data_new();
196}
197
198void ecdh_data_free(void *data)
199 {
200 ECDH_DATA *r = (ECDH_DATA *)data;
201
202#ifndef OPENSSL_NO_ENGINE
203 if (r->engine)
204 ENGINE_finish(r->engine);
205#endif
206
207 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ECDH, r, &r->ex_data);
208
209 OPENSSL_cleanse((void *)r, sizeof(ECDH_DATA));
210
211 OPENSSL_free(r);
212 }
213
214ECDH_DATA *ecdh_check(EC_KEY *key)
215 {
216 ECDH_DATA *ecdh_data;
217
218 void *data = EC_KEY_get_key_method_data(key, ecdh_data_dup,
219 ecdh_data_free, ecdh_data_free);
220 if (data == NULL)
221 {
222 ecdh_data = (ECDH_DATA *)ecdh_data_new();
223 if (ecdh_data == NULL)
224 return NULL;
225 EC_KEY_insert_key_method_data(key, (void *)ecdh_data,
226 ecdh_data_dup, ecdh_data_free, ecdh_data_free);
227 }
228 else
229 ecdh_data = (ECDH_DATA *)data;
230#ifdef OPENSSL_FIPS
231 if (FIPS_mode() && !(ecdh_data->flags & ECDH_FLAG_FIPS_METHOD)
232 && !(EC_KEY_get_flags(key) & EC_FLAG_NON_FIPS_ALLOW))
233 {
234 ECDHerr(ECDH_F_ECDH_CHECK, ECDH_R_NON_FIPS_METHOD);
235 return NULL;
236 }
237#endif
238
239
240 return ecdh_data;
241 }
242
243int ECDH_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
244 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
245 {
246 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_ECDH, argl, argp,
247 new_func, dup_func, free_func);
248 }
249
250int ECDH_set_ex_data(EC_KEY *d, int idx, void *arg)
251 {
252 ECDH_DATA *ecdh;
253 ecdh = ecdh_check(d);
254 if (ecdh == NULL)
255 return 0;
256 return(CRYPTO_set_ex_data(&ecdh->ex_data,idx,arg));
257 }
258
259void *ECDH_get_ex_data(EC_KEY *d, int idx)
260 {
261 ECDH_DATA *ecdh;
262 ecdh = ecdh_check(d);
263 if (ecdh == NULL)
264 return NULL;
265 return(CRYPTO_get_ex_data(&ecdh->ex_data,idx));
266 }
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