GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/rsa/rsa_lib.c Lines: 56 92 60.9 %
Date: 2017-11-07 Branches: 14 36 38.9 %

Line Branch Exec Source
1
/* $OpenBSD: rsa_lib.c,v 1.31 2017/01/29 17:49:23 beck 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
73
static const RSA_METHOD *default_RSA_meth = NULL;
74
75
RSA *
76
RSA_new(void)
77
{
78
4998
	RSA *r = RSA_new_method(NULL);
79
80
2499
	return r;
81
}
82
83
void
84
RSA_set_default_method(const RSA_METHOD *meth)
85
{
86
	default_RSA_meth = meth;
87
}
88
89
const RSA_METHOD *
90
RSA_get_default_method(void)
91
{
92
4998
	if (default_RSA_meth == NULL)
93
567
		default_RSA_meth = RSA_PKCS1_SSLeay();
94
95
2499
	return default_RSA_meth;
96
}
97
98
const RSA_METHOD *
99
RSA_get_method(const RSA *rsa)
100
{
101
	return rsa->meth;
102
}
103
104
int
105
RSA_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
128
RSA *
129
RSA_new_method(ENGINE *engine)
130
{
131
	RSA *ret;
132
133
4998
	ret = malloc(sizeof(RSA));
134
2499
	if (ret == NULL) {
135
		RSAerror(ERR_R_MALLOC_FAILURE);
136
		return NULL;
137
	}
138
139
2499
	ret->meth = RSA_get_default_method();
140
#ifndef OPENSSL_NO_ENGINE
141
2499
	if (engine) {
142
		if (!ENGINE_init(engine)) {
143
			RSAerror(ERR_R_ENGINE_LIB);
144
			free(ret);
145
			return NULL;
146
		}
147
		ret->engine = engine;
148
	} else
149
2499
		ret->engine = ENGINE_get_default_RSA();
150
2499
	if (ret->engine) {
151
		ret->meth = ENGINE_get_RSA(ret->engine);
152
		if (!ret->meth) {
153
			RSAerror(ERR_R_ENGINE_LIB);
154
			ENGINE_finish(ret->engine);
155
			free(ret);
156
			return NULL;
157
		}
158
	}
159
#endif
160
161
2499
	ret->pad = 0;
162
2499
	ret->version = 0;
163
2499
	ret->n = NULL;
164
2499
	ret->e = NULL;
165
2499
	ret->d = NULL;
166
2499
	ret->p = NULL;
167
2499
	ret->q = NULL;
168
2499
	ret->dmp1 = NULL;
169
2499
	ret->dmq1 = NULL;
170
2499
	ret->iqmp = NULL;
171
2499
	ret->references = 1;
172
2499
	ret->_method_mod_n = NULL;
173
2499
	ret->_method_mod_p = NULL;
174
2499
	ret->_method_mod_q = NULL;
175
2499
	ret->blinding = NULL;
176
2499
	ret->mt_blinding = NULL;
177
2499
	ret->flags = ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW;
178
2499
	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

4998
	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
2499
	return ret;
197
2499
}
198
199
void
200
RSA_free(RSA *r)
201
{
202
	int i;
203
204
5004
	if (r == NULL)
205
4
		return;
206
207
2498
	i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_RSA);
208
2498
	if (i > 0)
209
41
		return;
210
211
2457
	if (r->meth->finish)
212
2457
		r->meth->finish(r);
213
#ifndef OPENSSL_NO_ENGINE
214
2457
	if (r->engine)
215
		ENGINE_finish(r->engine);
216
#endif
217
218
2457
	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, r, &r->ex_data);
219
220
2457
	BN_clear_free(r->n);
221
2457
	BN_clear_free(r->e);
222
2457
	BN_clear_free(r->d);
223
2457
	BN_clear_free(r->p);
224
2457
	BN_clear_free(r->q);
225
2457
	BN_clear_free(r->dmp1);
226
2457
	BN_clear_free(r->dmq1);
227
2457
	BN_clear_free(r->iqmp);
228
2457
	BN_BLINDING_free(r->blinding);
229
2457
	BN_BLINDING_free(r->mt_blinding);
230
2457
	free(r);
231
4959
}
232
233
int
234
RSA_up_ref(RSA *r)
235
{
236
82
	int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_RSA);
237
41
	return i > 1 ? 1 : 0;
238
}
239
240
int
241
RSA_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
248
int
249
RSA_set_ex_data(RSA *r, int idx, void *arg)
250
{
251
32
	return CRYPTO_set_ex_data(&r->ex_data, idx, arg);
252
}
253
254
void *
255
RSA_get_ex_data(const RSA *r, int idx)
256
{
257
	return CRYPTO_get_ex_data(&r->ex_data, idx);
258
}