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diff --git a/src/lib/libcrypto/ecdsa/ecs_lib.c b/src/lib/libcrypto/ecdsa/ecs_lib.c
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1/* crypto/ecdsa/ecs_lib.c */
2/* ====================================================================
3 * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * openssl-core@OpenSSL.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 * acknowledgment:
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com). This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
53 *
54 */
55
56#include <string.h>
57#include "ecs_locl.h"
58#ifndef OPENSSL_NO_ENGINE
59#include <openssl/engine.h>
60#endif
61#include <openssl/err.h>
62#include <openssl/bn.h>
63
64const char ECDSA_version[]="ECDSA" OPENSSL_VERSION_PTEXT;
65
66static const ECDSA_METHOD *default_ECDSA_method = NULL;
67
68static void *ecdsa_data_new(void);
69static void *ecdsa_data_dup(void *);
70static void ecdsa_data_free(void *);
71
72void ECDSA_set_default_method(const ECDSA_METHOD *meth)
73{
74 default_ECDSA_method = meth;
75}
76
77const ECDSA_METHOD *ECDSA_get_default_method(void)
78{
79 if(!default_ECDSA_method)
80 default_ECDSA_method = ECDSA_OpenSSL();
81 return default_ECDSA_method;
82}
83
84int ECDSA_set_method(EC_KEY *eckey, const ECDSA_METHOD *meth)
85{
86 const ECDSA_METHOD *mtmp;
87 ECDSA_DATA *ecdsa;
88
89 ecdsa = ecdsa_check(eckey);
90
91 if (ecdsa == NULL)
92 return 0;
93
94 mtmp = ecdsa->meth;
95#ifndef OPENSSL_NO_ENGINE
96 if (ecdsa->engine)
97 {
98 ENGINE_finish(ecdsa->engine);
99 ecdsa->engine = NULL;
100 }
101#endif
102 ecdsa->meth = meth;
103
104 return 1;
105}
106
107static ECDSA_DATA *ECDSA_DATA_new_method(ENGINE *engine)
108{
109 ECDSA_DATA *ret;
110
111 ret=(ECDSA_DATA *)OPENSSL_malloc(sizeof(ECDSA_DATA));
112 if (ret == NULL)
113 {
114 ECDSAerr(ECDSA_F_ECDSA_DATA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
115 return(NULL);
116 }
117
118 ret->init = NULL;
119
120 ret->meth = ECDSA_get_default_method();
121 ret->engine = engine;
122#ifndef OPENSSL_NO_ENGINE
123 if (!ret->engine)
124 ret->engine = ENGINE_get_default_ECDSA();
125 if (ret->engine)
126 {
127 ret->meth = ENGINE_get_ECDSA(ret->engine);
128 if (!ret->meth)
129 {
130 ECDSAerr(ECDSA_F_ECDSA_DATA_NEW_METHOD, ERR_R_ENGINE_LIB);
131 ENGINE_finish(ret->engine);
132 OPENSSL_free(ret);
133 return NULL;
134 }
135 }
136#endif
137
138 ret->flags = ret->meth->flags;
139 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_ECDSA, ret, &ret->ex_data);
140#if 0
141 if ((ret->meth->init != NULL) && !ret->meth->init(ret))
142 {
143 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ECDSA, ret, &ret->ex_data);
144 OPENSSL_free(ret);
145 ret=NULL;
146 }
147#endif
148 return(ret);
149}
150
151static void *ecdsa_data_new(void)
152{
153 return (void *)ECDSA_DATA_new_method(NULL);
154}
155
156static void *ecdsa_data_dup(void *data)
157{
158 ECDSA_DATA *r = (ECDSA_DATA *)data;
159
160 /* XXX: dummy operation */
161 if (r == NULL)
162 return NULL;
163
164 return ecdsa_data_new();
165}
166
167static void ecdsa_data_free(void *data)
168{
169 ECDSA_DATA *r = (ECDSA_DATA *)data;
170
171#ifndef OPENSSL_NO_ENGINE
172 if (r->engine)
173 ENGINE_finish(r->engine);
174#endif
175 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ECDSA, r, &r->ex_data);
176
177 OPENSSL_cleanse((void *)r, sizeof(ECDSA_DATA));
178
179 OPENSSL_free(r);
180}
181
182ECDSA_DATA *ecdsa_check(EC_KEY *key)
183{
184 ECDSA_DATA *ecdsa_data;
185
186 void *data = EC_KEY_get_key_method_data(key, ecdsa_data_dup,
187 ecdsa_data_free, ecdsa_data_free);
188 if (data == NULL)
189 {
190 ecdsa_data = (ECDSA_DATA *)ecdsa_data_new();
191 if (ecdsa_data == NULL)
192 return NULL;
193 EC_KEY_insert_key_method_data(key, (void *)ecdsa_data,
194 ecdsa_data_dup, ecdsa_data_free, ecdsa_data_free);
195 }
196 else
197 ecdsa_data = (ECDSA_DATA *)data;
198
199
200 return ecdsa_data;
201}
202
203int ECDSA_size(const EC_KEY *r)
204{
205 int ret,i;
206 ASN1_INTEGER bs;
207 BIGNUM *order=NULL;
208 unsigned char buf[4];
209 const EC_GROUP *group;
210
211 if (r == NULL)
212 return 0;
213 group = EC_KEY_get0_group(r);
214 if (group == NULL)
215 return 0;
216
217 if ((order = BN_new()) == NULL) return 0;
218 if (!EC_GROUP_get_order(group,order,NULL))
219 {
220 BN_clear_free(order);
221 return 0;
222 }
223 i=BN_num_bits(order);
224 bs.length=(i+7)/8;
225 bs.data=buf;
226 bs.type=V_ASN1_INTEGER;
227 /* If the top bit is set the asn1 encoding is 1 larger. */
228 buf[0]=0xff;
229
230 i=i2d_ASN1_INTEGER(&bs,NULL);
231 i+=i; /* r and s */
232 ret=ASN1_object_size(1,i,V_ASN1_SEQUENCE);
233 BN_clear_free(order);
234 return(ret);
235}
236
237
238int ECDSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
239 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
240{
241 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_ECDSA, argl, argp,
242 new_func, dup_func, free_func);
243}
244
245int ECDSA_set_ex_data(EC_KEY *d, int idx, void *arg)
246{
247 ECDSA_DATA *ecdsa;
248 ecdsa = ecdsa_check(d);
249 if (ecdsa == NULL)
250 return 0;
251 return(CRYPTO_set_ex_data(&ecdsa->ex_data,idx,arg));
252}
253
254void *ECDSA_get_ex_data(EC_KEY *d, int idx)
255{
256 ECDSA_DATA *ecdsa;
257 ecdsa = ecdsa_check(d);
258 if (ecdsa == NULL)
259 return NULL;
260 return(CRYPTO_get_ex_data(&ecdsa->ex_data,idx));
261}
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