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diff --git a/src/lib/libcrypto/rsa/rsa_lib.c b/src/lib/libcrypto/rsa/rsa_lib.c
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1/* $OpenBSD: rsa_lib.c,v 1.30 2015/02/11 03:19:37 doug Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdio.h>
60
61#include <openssl/opensslconf.h>
62
63#include <openssl/bn.h>
64#include <openssl/crypto.h>
65#include <openssl/err.h>
66#include <openssl/lhash.h>
67#include <openssl/rsa.h>
68
69#ifndef OPENSSL_NO_ENGINE
70#include <openssl/engine.h>
71#endif
72
73static const RSA_METHOD *default_RSA_meth = NULL;
74
75RSA *
76RSA_new(void)
77{
78 RSA *r = RSA_new_method(NULL);
79
80 return r;
81}
82
83void
84RSA_set_default_method(const RSA_METHOD *meth)
85{
86 default_RSA_meth = meth;
87}
88
89const RSA_METHOD *
90RSA_get_default_method(void)
91{
92 if (default_RSA_meth == NULL)
93 default_RSA_meth = RSA_PKCS1_SSLeay();
94
95 return default_RSA_meth;
96}
97
98const RSA_METHOD *
99RSA_get_method(const RSA *rsa)
100{
101 return rsa->meth;
102}
103
104int
105RSA_set_method(RSA *rsa, const RSA_METHOD *meth)
106{
107 /*
108 * NB: The caller is specifically setting a method, so it's not up to us
109 * to deal with which ENGINE it comes from.
110 */
111 const RSA_METHOD *mtmp;
112
113 mtmp = rsa->meth;
114 if (mtmp->finish)
115 mtmp->finish(rsa);
116#ifndef OPENSSL_NO_ENGINE
117 if (rsa->engine) {
118 ENGINE_finish(rsa->engine);
119 rsa->engine = NULL;
120 }
121#endif
122 rsa->meth = meth;
123 if (meth->init)
124 meth->init(rsa);
125 return 1;
126}
127
128RSA *
129RSA_new_method(ENGINE *engine)
130{
131 RSA *ret;
132
133 ret = malloc(sizeof(RSA));
134 if (ret == NULL) {
135 RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
136 return NULL;
137 }
138
139 ret->meth = RSA_get_default_method();
140#ifndef OPENSSL_NO_ENGINE
141 if (engine) {
142 if (!ENGINE_init(engine)) {
143 RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB);
144 free(ret);
145 return NULL;
146 }
147 ret->engine = engine;
148 } else
149 ret->engine = ENGINE_get_default_RSA();
150 if (ret->engine) {
151 ret->meth = ENGINE_get_RSA(ret->engine);
152 if (!ret->meth) {
153 RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB);
154 ENGINE_finish(ret->engine);
155 free(ret);
156 return NULL;
157 }
158 }
159#endif
160
161 ret->pad = 0;
162 ret->version = 0;
163 ret->n = NULL;
164 ret->e = NULL;
165 ret->d = NULL;
166 ret->p = NULL;
167 ret->q = NULL;
168 ret->dmp1 = NULL;
169 ret->dmq1 = NULL;
170 ret->iqmp = NULL;
171 ret->references = 1;
172 ret->_method_mod_n = NULL;
173 ret->_method_mod_p = NULL;
174 ret->_method_mod_q = NULL;
175 ret->blinding = NULL;
176 ret->mt_blinding = NULL;
177 ret->flags = ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW;
178 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data)) {
179#ifndef OPENSSL_NO_ENGINE
180 if (ret->engine)
181 ENGINE_finish(ret->engine);
182#endif
183 free(ret);
184 return NULL;
185 }
186
187 if (ret->meth->init != NULL && !ret->meth->init(ret)) {
188#ifndef OPENSSL_NO_ENGINE
189 if (ret->engine)
190 ENGINE_finish(ret->engine);
191#endif
192 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data);
193 free(ret);
194 ret = NULL;
195 }
196 return ret;
197}
198
199void
200RSA_free(RSA *r)
201{
202 int i;
203
204 if (r == NULL)
205 return;
206
207 i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_RSA);
208 if (i > 0)
209 return;
210
211 if (r->meth->finish)
212 r->meth->finish(r);
213#ifndef OPENSSL_NO_ENGINE
214 if (r->engine)
215 ENGINE_finish(r->engine);
216#endif
217
218 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, r, &r->ex_data);
219
220 BN_clear_free(r->n);
221 BN_clear_free(r->e);
222 BN_clear_free(r->d);
223 BN_clear_free(r->p);
224 BN_clear_free(r->q);
225 BN_clear_free(r->dmp1);
226 BN_clear_free(r->dmq1);
227 BN_clear_free(r->iqmp);
228 BN_BLINDING_free(r->blinding);
229 BN_BLINDING_free(r->mt_blinding);
230 free(r);
231}
232
233int
234RSA_up_ref(RSA *r)
235{
236 int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_RSA);
237 return i > 1 ? 1 : 0;
238}
239
240int
241RSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
242 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
243{
244 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_RSA, argl, argp,
245 new_func, dup_func, free_func);
246}
247
248int
249RSA_set_ex_data(RSA *r, int idx, void *arg)
250{
251 return CRYPTO_set_ex_data(&r->ex_data, idx, arg);
252}
253
254void *
255RSA_get_ex_data(const RSA *r, int idx)
256{
257 return CRYPTO_get_ex_data(&r->ex_data, idx);
258}
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