Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/crypto/../../libssl/src/crypto/ecdh/ech_lib.c	Lines:	35	70	50.0 %
Date:	2016-12-06	Branches:	9	28	32.1 %


/* $OpenBSD: ech_lib.c,v 1.11 2015/09/13 12:03:07 jsing Exp $ */
/* ====================================================================
 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
 *
 * The Elliptic Curve Public-Key Crypto Library (ECC Code) included
 * herein is developed by SUN MICROSYSTEMS, INC., and is contributed
 * to the OpenSSL project.
 *
 * The ECC Code is licensed pursuant to the OpenSSL open source
 * license provided below.
 *
 * The ECDH software is originally written by Douglas Stebila of
 * Sun Microsystems Laboratories.
 *
 */
/* ====================================================================
 * Copyright (c) 1998-2003 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    openssl-core@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

#include <string.h>

#include <openssl/opensslconf.h>

#include "ech_locl.h"
#ifndef OPENSSL_NO_ENGINE
#include <openssl/engine.h>
#endif
#include <openssl/err.h>

static const ECDH_METHOD *default_ECDH_method = NULL;

static void *ecdh_data_new(void);
static void *ecdh_data_dup(void *);
static void  ecdh_data_free(void *);

void
ECDH_set_default_method(const ECDH_METHOD *meth)
{
	default_ECDH_method = meth;
}

const ECDH_METHOD *
ECDH_get_default_method(void)
{
	if (!default_ECDH_method) {
		default_ECDH_method = ECDH_OpenSSL();
	}
	return default_ECDH_method;
}

int
ECDH_set_method(EC_KEY *eckey, const ECDH_METHOD *meth)
{
	ECDH_DATA *ecdh;

	ecdh = ecdh_check(eckey);

	if (ecdh == NULL)
		return 0;

#ifndef OPENSSL_NO_ENGINE
	if (ecdh->engine) {
		ENGINE_finish(ecdh->engine);
		ecdh->engine = NULL;
	}
#endif
	ecdh->meth = meth;
	return 1;
}

static ECDH_DATA *
ECDH_DATA_new_method(ENGINE *engine)
{
	ECDH_DATA *ret;

	ret = malloc(sizeof(ECDH_DATA));
	if (ret == NULL) {
		ECDHerr(ECDH_F_ECDH_DATA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
		return (NULL);
	}

	ret->init = NULL;

	ret->meth = ECDH_get_default_method();
	ret->engine = engine;
#ifndef OPENSSL_NO_ENGINE
	if (!ret->engine)
		ret->engine = ENGINE_get_default_ECDH();
	if (ret->engine) {
		ret->meth = ENGINE_get_ECDH(ret->engine);
		if (!ret->meth) {
			ECDHerr(ECDH_F_ECDH_DATA_NEW_METHOD, ERR_R_ENGINE_LIB);
			ENGINE_finish(ret->engine);
			free(ret);
			return NULL;
		}
	}
#endif

	ret->flags = ret->meth->flags;
	CRYPTO_new_ex_data(CRYPTO_EX_INDEX_ECDH, ret, &ret->ex_data);
	return (ret);
}

static void *
ecdh_data_new(void)
{
	return (void *)ECDH_DATA_new_method(NULL);
}

static void *
ecdh_data_dup(void *data)
{
	ECDH_DATA *r = (ECDH_DATA *)data;

	/* XXX: dummy operation */
	if (r == NULL)
		return NULL;

	return (void *)ecdh_data_new();
}

void
ecdh_data_free(void *data)
{
	ECDH_DATA *r = (ECDH_DATA *)data;

#ifndef OPENSSL_NO_ENGINE
	if (r->engine)
		ENGINE_finish(r->engine);
#endif

	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ECDH, r, &r->ex_data);

	explicit_bzero((void *)r, sizeof(ECDH_DATA));

	free(r);
}

ECDH_DATA *
ecdh_check(EC_KEY *key)
{
	ECDH_DATA *ecdh_data;

	void *data = EC_KEY_get_key_method_data(key, ecdh_data_dup,
	    ecdh_data_free, ecdh_data_free);
	if (data == NULL) {
		ecdh_data = (ECDH_DATA *)ecdh_data_new();
		if (ecdh_data == NULL)
			return NULL;
		data = EC_KEY_insert_key_method_data(key, (void *)ecdh_data,
		    ecdh_data_dup, ecdh_data_free, ecdh_data_free);
		if (data != NULL) {
			/* Another thread raced us to install the key_method
			 * data and won. */
			ecdh_data_free(ecdh_data);
			ecdh_data = (ECDH_DATA *)data;
		}
	} else
		ecdh_data = (ECDH_DATA *)data;

	return ecdh_data;
}

int
ECDH_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
    CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
{
	return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_ECDH, argl, argp,
	    new_func, dup_func, free_func);
}

int
ECDH_set_ex_data(EC_KEY *d, int idx, void *arg)
{
	ECDH_DATA *ecdh;
	ecdh = ecdh_check(d);
	if (ecdh == NULL)
		return 0;
	return (CRYPTO_set_ex_data(&ecdh->ex_data, idx, arg));
}

void *
ECDH_get_ex_data(EC_KEY *d, int idx)
{
	ECDH_DATA *ecdh;
	ecdh = ecdh_check(d);
	if (ecdh == NULL)
		return NULL;
	return (CRYPTO_get_ex_data(&ecdh->ex_data, idx));
}

int
ECDH_size(const EC_KEY *d)
{
	return ((EC_GROUP_get_degree(EC_KEY_get0_group(d)) + 7) / 8);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: ech_lib.c,v 1.11 2015/09/13 12:03:07 jsing Exp $ */
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 <string.h>
71
72			#include <openssl/opensslconf.h>
73
74			#include "ech_locl.h"
75			#ifndef OPENSSL_NO_ENGINE
76			#include <openssl/engine.h>
77			#endif
78			#include <openssl/err.h>
79
80			static const ECDH_METHOD *default_ECDH_method = NULL;
81
82			static void *ecdh_data_new(void);
83			static void ecdh_data_dup(void );
84			static void ecdh_data_free(void *);
85
86			void
87			ECDH_set_default_method(const ECDH_METHOD *meth)
88			{
89			default_ECDH_method = meth;
90			}
91
92			const ECDH_METHOD *
93			ECDH_get_default_method(void)
94		38	{
95	✓✓	38	if (!default_ECDH_method) {
96		3	default_ECDH_method = ECDH_OpenSSL();
97			}
98		38	return default_ECDH_method;
99			}
100
101			int
102			ECDH_set_method(EC_KEY eckey, const ECDH_METHOD meth)
103			{
104			ECDH_DATA *ecdh;
105
106			ecdh = ecdh_check(eckey);
107
108			if (ecdh == NULL)
109			return 0;
110
111			#ifndef OPENSSL_NO_ENGINE
112			if (ecdh->engine) {
113			ENGINE_finish(ecdh->engine);
114			ecdh->engine = NULL;
115			}
116			#endif
117			ecdh->meth = meth;
118			return 1;
119			}
120
121			static ECDH_DATA *
122			ECDH_DATA_new_method(ENGINE *engine)
123		38	{
124			ECDH_DATA *ret;
125
126		38	ret = malloc(sizeof(ECDH_DATA));
127	✗✓	38	if (ret == NULL) {
128			ECDHerr(ECDH_F_ECDH_DATA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
129			return (NULL);
130			}
131
132		38	ret->init = NULL;
133
134		38	ret->meth = ECDH_get_default_method();
135		38	ret->engine = engine;
136			#ifndef OPENSSL_NO_ENGINE
137	✓✗	38	if (!ret->engine)
138		38	ret->engine = ENGINE_get_default_ECDH();
139	✗✓	38	if (ret->engine) {
140			ret->meth = ENGINE_get_ECDH(ret->engine);
141			if (!ret->meth) {
142			ECDHerr(ECDH_F_ECDH_DATA_NEW_METHOD, ERR_R_ENGINE_LIB);
143			ENGINE_finish(ret->engine);
144			free(ret);
145			return NULL;
146			}
147			}
148			#endif
149
150		38	ret->flags = ret->meth->flags;
151		38	CRYPTO_new_ex_data(CRYPTO_EX_INDEX_ECDH, ret, &ret->ex_data);
152		38	return (ret);
153			}
154
155			static void *
156			ecdh_data_new(void)
157		38	{
158		38	return (void *)ECDH_DATA_new_method(NULL);
159			}
160
161			static void *
162			ecdh_data_dup(void *data)
163			{
164			ECDH_DATA r = (ECDH_DATA )data;
165
166			/* XXX: dummy operation */
167			if (r == NULL)
168			return NULL;
169
170			return (void *)ecdh_data_new();
171			}
172
173			void
174			ecdh_data_free(void *data)
175		38	{
176		38	ECDH_DATA r = (ECDH_DATA )data;
177
178			#ifndef OPENSSL_NO_ENGINE
179	✗✓	38	if (r->engine)
180			ENGINE_finish(r->engine);
181			#endif
182
183		38	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ECDH, r, &r->ex_data);
184
185		38	explicit_bzero((void *)r, sizeof(ECDH_DATA));
186
187		38	free(r);
188		38	}
189
190			ECDH_DATA *
191			ecdh_check(EC_KEY *key)
192		38	{
193			ECDH_DATA *ecdh_data;
194
195			void *data = EC_KEY_get_key_method_data(key, ecdh_data_dup,
196		38	ecdh_data_free, ecdh_data_free);
197	✓✗	38	if (data == NULL) {
198		38	ecdh_data = (ECDH_DATA *)ecdh_data_new();
199	✗✓	38	if (ecdh_data == NULL)
200			return NULL;
201		38	data = EC_KEY_insert_key_method_data(key, (void *)ecdh_data,
202			ecdh_data_dup, ecdh_data_free, ecdh_data_free);
203	✗✓	38	if (data != NULL) {
204			/* Another thread raced us to install the key_method
205			* data and won. */
206			ecdh_data_free(ecdh_data);
207			ecdh_data = (ECDH_DATA *)data;
208			}
209			} else
210			ecdh_data = (ECDH_DATA *)data;
211
212		38	return ecdh_data;
213			}
214
215			int
216			ECDH_get_ex_new_index(long argl, void argp, CRYPTO_EX_new new_func,
217			CRYPTO_EX_dup dup_func, CRYPTO_EX_free free_func)
218			{
219			return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_ECDH, argl, argp,
220			new_func, dup_func, free_func);
221			}
222
223			int
224			ECDH_set_ex_data(EC_KEY d, int idx, void arg)
225			{
226			ECDH_DATA *ecdh;
227			ecdh = ecdh_check(d);
228			if (ecdh == NULL)
229			return 0;
230			return (CRYPTO_set_ex_data(&ecdh->ex_data, idx, arg));
231			}
232
233			void *
234			ECDH_get_ex_data(EC_KEY *d, int idx)
235			{
236			ECDH_DATA *ecdh;
237			ecdh = ecdh_check(d);
238			if (ecdh == NULL)
239			return NULL;
240			return (CRYPTO_get_ex_data(&ecdh->ex_data, idx));
241			}
242
243			int
244			ECDH_size(const EC_KEY *d)
245		43	{
246		43	return ((EC_GROUP_get_degree(EC_KEY_get0_group(d)) + 7) / 8);
247			}