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-rw-r--r--src/lib/libcrypto/ec/ec_kmeth.c272
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diff --git a/src/lib/libcrypto/ec/ec_kmeth.c b/src/lib/libcrypto/ec/ec_kmeth.c
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1/*
2 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project.
4 */
5/* ====================================================================
6 * Copyright (c) 2015 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 */
53
54#include <openssl/ec.h>
55#ifndef OPENSSL_NO_ENGINE
56#include <openssl/engine.h>
57#endif
58#include <openssl/err.h>
59
60#include "ec_lcl.h"
61#include "ecs_locl.h"
62
63static const EC_KEY_METHOD openssl_ec_key_method = {
64 .name = "OpenSSL EC_KEY method",
65 .flags = 0,
66
67 .init = NULL,
68 .finish = NULL,
69 .copy = NULL,
70
71 .set_group = NULL,
72 .set_private = NULL,
73 .set_public = NULL,
74
75 .sign = ossl_ecdsa_sign,
76 .sign_setup = ossl_ecdsa_sign_setup,
77 .sign_sig = ossl_ecdsa_sign_sig,
78};
79
80const EC_KEY_METHOD *default_ec_key_meth = &openssl_ec_key_method;
81
82const EC_KEY_METHOD *
83EC_KEY_OpenSSL(void)
84{
85 return &openssl_ec_key_method;
86}
87
88const EC_KEY_METHOD *
89EC_KEY_get_default_method(void)
90{
91 return default_ec_key_meth;
92}
93
94void
95EC_KEY_set_default_method(const EC_KEY_METHOD *meth)
96{
97 if (meth == NULL)
98 default_ec_key_meth = &openssl_ec_key_method;
99 else
100 default_ec_key_meth = meth;
101}
102
103const EC_KEY_METHOD *
104EC_KEY_get_method(const EC_KEY *key)
105{
106 return key->meth;
107}
108
109int
110EC_KEY_set_method(EC_KEY *key, const EC_KEY_METHOD *meth)
111{
112 void (*finish)(EC_KEY *key) = key->meth->finish;
113
114 if (finish != NULL)
115 finish(key);
116
117#ifndef OPENSSL_NO_ENGINE
118 ENGINE_finish(key->engine);
119 key->engine = NULL;
120#endif
121
122 key->meth = meth;
123 if (meth->init != NULL)
124 return meth->init(key);
125 return 1;
126}
127
128EC_KEY *
129EC_KEY_new_method(ENGINE *engine)
130{
131 EC_KEY *ret;
132
133 if ((ret = calloc(1, sizeof(EC_KEY))) == NULL) {
134 ECerror(ERR_R_MALLOC_FAILURE);
135 return NULL;
136 }
137 ret->meth = EC_KEY_get_default_method();
138#ifndef OPENSSL_NO_ENGINE
139 if (engine != NULL) {
140 if (!ENGINE_init(engine)) {
141 ECerror(ERR_R_ENGINE_LIB);
142 goto err;
143 }
144 ret->engine = engine;
145 } else
146 ret->engine = ENGINE_get_default_EC();
147 if (ret->engine) {
148 ret->meth = ENGINE_get_EC(ret->engine);
149 if (ret->meth == NULL) {
150 ECerror(ERR_R_ENGINE_LIB);
151 goto err;
152 }
153 }
154#endif
155 ret->version = 1;
156 ret->flags = 0;
157 ret->group = NULL;
158 ret->pub_key = NULL;
159 ret->priv_key = NULL;
160 ret->enc_flag = 0;
161 ret->conv_form = POINT_CONVERSION_UNCOMPRESSED;
162 ret->references = 1;
163 ret->method_data = NULL;
164
165 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data))
166 goto err;
167 if (ret->meth->init != NULL && ret->meth->init(ret) == 0)
168 goto err;
169
170 return ret;
171
172 err:
173 EC_KEY_free(ret);
174 return NULL;
175}
176
177EC_KEY_METHOD *
178EC_KEY_METHOD_new(const EC_KEY_METHOD *meth)
179{
180 EC_KEY_METHOD *ret;
181
182 if ((ret = malloc(sizeof(*meth))) == NULL)
183 return NULL;
184 if (meth != NULL)
185 *ret = *meth;
186 ret->flags |= EC_KEY_METHOD_DYNAMIC;
187 return ret;
188}
189
190void
191EC_KEY_METHOD_free(EC_KEY_METHOD *meth)
192{
193 if (meth == NULL)
194 return;
195 if (meth->flags & EC_KEY_METHOD_DYNAMIC)
196 free(meth);
197}
198
199void
200EC_KEY_METHOD_get_init(EC_KEY_METHOD *meth,
201 int (**pinit)(EC_KEY *key),
202 void (**pfinish)(EC_KEY *key),
203 int (**pcopy)(EC_KEY *dest, const EC_KEY *src),
204 int (**pset_group)(EC_KEY *key, const EC_GROUP *grp),
205 int (**pset_private)(EC_KEY *key, const BIGNUM *priv_key),
206 int (**pset_public)(EC_KEY *key, const EC_POINT *pub_key))
207{
208 if (pinit != NULL)
209 *pinit = meth->init;
210 if (pfinish != NULL)
211 *pfinish = meth->finish;
212 if (pcopy != NULL)
213 *pcopy = meth->copy;
214 if (pset_group != NULL)
215 *pset_group = meth->set_group;
216 if (pset_private != NULL)
217 *pset_private = meth->set_private;
218 if (pset_public != NULL)
219 *pset_public = meth->set_public;
220}
221
222void
223EC_KEY_METHOD_set_init(EC_KEY_METHOD *meth,
224 int (*init)(EC_KEY *key),
225 void (*finish)(EC_KEY *key),
226 int (*copy)(EC_KEY *dest, const EC_KEY *src),
227 int (*set_group)(EC_KEY *key, const EC_GROUP *grp),
228 int (*set_private)(EC_KEY *key, const BIGNUM *priv_key),
229 int (*set_public)(EC_KEY *key, const EC_POINT *pub_key))
230{
231 meth->init = init;
232 meth->finish = finish;
233 meth->copy = copy;
234 meth->set_group = set_group;
235 meth->set_private = set_private;
236 meth->set_public = set_public;
237}
238
239void
240EC_KEY_METHOD_get_sign(EC_KEY_METHOD *meth,
241 int (**psign)(int type, const unsigned char *dgst,
242 int dlen, unsigned char *sig, unsigned int *siglen,
243 const BIGNUM *kinv, const BIGNUM *r, EC_KEY *eckey),
244 int (**psign_setup)(EC_KEY *eckey, BN_CTX *ctx_in,
245 BIGNUM **kinvp, BIGNUM **rp),
246 ECDSA_SIG *(**psign_sig)(const unsigned char *dgst,
247 int dgst_len, const BIGNUM *in_kinv, const BIGNUM *in_r,
248 EC_KEY *eckey))
249{
250 if (psign != NULL)
251 *psign = meth->sign;
252 if (psign_setup != NULL)
253 *psign_setup = meth->sign_setup;
254 if (psign_sig != NULL)
255 *psign_sig = meth->sign_sig;
256}
257
258void
259EC_KEY_METHOD_set_sign(EC_KEY_METHOD *meth,
260 int (*sign)(int type, const unsigned char *dgst,
261 int dlen, unsigned char *sig, unsigned int *siglen,
262 const BIGNUM *kinv, const BIGNUM *r, EC_KEY *eckey),
263 int (*sign_setup)(EC_KEY *eckey, BN_CTX *ctx_in,
264 BIGNUM **kinvp, BIGNUM **rp),
265 ECDSA_SIG *(*sign_sig)(const unsigned char *dgst,
266 int dgst_len, const BIGNUM *in_kinv,
267 const BIGNUM *in_r, EC_KEY *eckey))
268{
269 meth->sign = sign;
270 meth->sign_setup = sign_setup;
271 meth->sign_sig = sign_sig;
272}