Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/crypto/../../libssl/src/crypto/ec/ec_key.c	Lines:	110	249	44.2 %
Date:	2016-12-06	Branches:	37	146	25.3 %


/* $OpenBSD: ec_key.c,v 1.12 2015/09/10 15:56:25 jsing Exp $ */
/*
 * Written by Nils Larsch for the OpenSSL project.
 */
/* ====================================================================
 * Copyright (c) 1998-2005 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).
 *
 */
/* ====================================================================
 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
 * Portions originally developed by SUN MICROSYSTEMS, INC., and
 * contributed to the OpenSSL project.
 */

#include <string.h>

#include <openssl/opensslconf.h>

#include "ec_lcl.h"
#include <openssl/err.h>

EC_KEY *
EC_KEY_new(void)
{
	EC_KEY *ret;

	ret = malloc(sizeof(EC_KEY));
	if (ret == NULL) {
		ECerr(EC_F_EC_KEY_NEW, ERR_R_MALLOC_FAILURE);
		return (NULL);
	}
	ret->version = 1;
	ret->flags = 0;
	ret->group = NULL;
	ret->pub_key = NULL;
	ret->priv_key = NULL;
	ret->enc_flag = 0;
	ret->conv_form = POINT_CONVERSION_UNCOMPRESSED;
	ret->references = 1;
	ret->method_data = NULL;
	return (ret);
}

EC_KEY *
EC_KEY_new_by_curve_name(int nid)
{
	EC_KEY *ret = EC_KEY_new();
	if (ret == NULL)
		return NULL;
	ret->group = EC_GROUP_new_by_curve_name(nid);
	if (ret->group == NULL) {
		EC_KEY_free(ret);
		return NULL;
	}
	return ret;
}

void
EC_KEY_free(EC_KEY * r)
{
	int i;

	if (r == NULL)
		return;

	i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_EC);
	if (i > 0)
		return;

	EC_GROUP_free(r->group);
	EC_POINT_free(r->pub_key);
	BN_clear_free(r->priv_key);

	EC_EX_DATA_free_all_data(&r->method_data);

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

	free(r);
}

EC_KEY *
EC_KEY_copy(EC_KEY * dest, const EC_KEY * src)
{
	EC_EXTRA_DATA *d;

	if (dest == NULL || src == NULL) {
		ECerr(EC_F_EC_KEY_COPY, ERR_R_PASSED_NULL_PARAMETER);
		return NULL;
	}
	/* copy the parameters */
	if (src->group) {
		const EC_METHOD *meth = EC_GROUP_method_of(src->group);
		/* clear the old group */
		EC_GROUP_free(dest->group);
		dest->group = EC_GROUP_new(meth);
		if (dest->group == NULL)
			return NULL;
		if (!EC_GROUP_copy(dest->group, src->group))
			return NULL;
	}
	/* copy the public key */
	if (src->pub_key && src->group) {
		EC_POINT_free(dest->pub_key);
		dest->pub_key = EC_POINT_new(src->group);
		if (dest->pub_key == NULL)
			return NULL;
		if (!EC_POINT_copy(dest->pub_key, src->pub_key))
			return NULL;
	}
	/* copy the private key */
	if (src->priv_key) {
		if (dest->priv_key == NULL) {
			dest->priv_key = BN_new();
			if (dest->priv_key == NULL)
				return NULL;
		}
		if (!BN_copy(dest->priv_key, src->priv_key))
			return NULL;
	}
	/* copy method/extra data */
	EC_EX_DATA_free_all_data(&dest->method_data);

	for (d = src->method_data; d != NULL; d = d->next) {
		void *t = d->dup_func(d->data);

		if (t == NULL)
			return 0;
		if (!EC_EX_DATA_set_data(&dest->method_data, t, d->dup_func,
		    d->free_func, d->clear_free_func))
			return 0;
	}

	/* copy the rest */
	dest->enc_flag = src->enc_flag;
	dest->conv_form = src->conv_form;
	dest->version = src->version;
	dest->flags = src->flags;

	return dest;
}

EC_KEY *
EC_KEY_dup(const EC_KEY * ec_key)
{
	EC_KEY *ret = EC_KEY_new();
	if (ret == NULL)
		return NULL;
	if (EC_KEY_copy(ret, ec_key) == NULL) {
		EC_KEY_free(ret);
		return NULL;
	}
	return ret;
}

int
EC_KEY_up_ref(EC_KEY * r)
{
	int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_EC);
	return ((i > 1) ? 1 : 0);
}

int
EC_KEY_generate_key(EC_KEY * eckey)
{
	int ok = 0;
	BN_CTX *ctx = NULL;
	BIGNUM *priv_key = NULL, *order = NULL;
	EC_POINT *pub_key = NULL;

	if (!eckey || !eckey->group) {
		ECerr(EC_F_EC_KEY_GENERATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
		return 0;
	}
	if ((order = BN_new()) == NULL)
		goto err;
	if ((ctx = BN_CTX_new()) == NULL)
		goto err;

	if (eckey->priv_key == NULL) {
		priv_key = BN_new();
		if (priv_key == NULL)
			goto err;
	} else
		priv_key = eckey->priv_key;

	if (!EC_GROUP_get_order(eckey->group, order, ctx))
		goto err;

	do
		if (!BN_rand_range(priv_key, order))
			goto err;
	while (BN_is_zero(priv_key));

	if (eckey->pub_key == NULL) {
		pub_key = EC_POINT_new(eckey->group);
		if (pub_key == NULL)
			goto err;
	} else
		pub_key = eckey->pub_key;

	if (!EC_POINT_mul(eckey->group, pub_key, priv_key, NULL, NULL, ctx))
		goto err;

	eckey->priv_key = priv_key;
	eckey->pub_key = pub_key;

	ok = 1;

err:
	BN_free(order);
	if (pub_key != NULL && eckey->pub_key == NULL)
		EC_POINT_free(pub_key);
	if (priv_key != NULL && eckey->priv_key == NULL)
		BN_free(priv_key);
	BN_CTX_free(ctx);
	return (ok);
}

int
EC_KEY_check_key(const EC_KEY * eckey)
{
	int ok = 0;
	BN_CTX *ctx = NULL;
	const BIGNUM *order = NULL;
	EC_POINT *point = NULL;

	if (!eckey || !eckey->group || !eckey->pub_key) {
		ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_PASSED_NULL_PARAMETER);
		return 0;
	}
	if (EC_POINT_is_at_infinity(eckey->group, eckey->pub_key) > 0) {
		ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_AT_INFINITY);
		goto err;
	}
	if ((ctx = BN_CTX_new()) == NULL)
		goto err;
	if ((point = EC_POINT_new(eckey->group)) == NULL)
		goto err;

	/* testing whether the pub_key is on the elliptic curve */
	if (EC_POINT_is_on_curve(eckey->group, eckey->pub_key, ctx) <= 0) {
		ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_IS_NOT_ON_CURVE);
		goto err;
	}
	/* testing whether pub_key * order is the point at infinity */
	order = &eckey->group->order;
	if (BN_is_zero(order)) {
		ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_GROUP_ORDER);
		goto err;
	}
	if (!EC_POINT_mul(eckey->group, point, NULL, eckey->pub_key, order, ctx)) {
		ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB);
		goto err;
	}
	if (EC_POINT_is_at_infinity(eckey->group, point) <= 0) {
		ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER);
		goto err;
	}
	/*
	 * in case the priv_key is present : check if generator * priv_key ==
	 * pub_key
	 */
	if (eckey->priv_key) {
		if (BN_cmp(eckey->priv_key, order) >= 0) {
			ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER);
			goto err;
		}
		if (!EC_POINT_mul(eckey->group, point, eckey->priv_key,
			NULL, NULL, ctx)) {
			ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB);
			goto err;
		}
		if (EC_POINT_cmp(eckey->group, point, eckey->pub_key,
			ctx) != 0) {
			ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_PRIVATE_KEY);
			goto err;
		}
	}
	ok = 1;
err:
	BN_CTX_free(ctx);
	EC_POINT_free(point);
	return (ok);
}

int
EC_KEY_set_public_key_affine_coordinates(EC_KEY * key, BIGNUM * x, BIGNUM * y)
{
	BN_CTX *ctx = NULL;
	BIGNUM *tx, *ty;
	EC_POINT *point = NULL;
	int ok = 0, tmp_nid, is_char_two = 0;

	if (!key || !key->group || !x || !y) {
		ECerr(EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES,
		    ERR_R_PASSED_NULL_PARAMETER);
		return 0;
	}
	ctx = BN_CTX_new();
	if (!ctx)
		goto err;

	point = EC_POINT_new(key->group);

	if (!point)
		goto err;

	tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(key->group));

	if (tmp_nid == NID_X9_62_characteristic_two_field)
		is_char_two = 1;

	if ((tx = BN_CTX_get(ctx)) == NULL)
		goto err;
	if ((ty = BN_CTX_get(ctx)) == NULL)
		goto err;

#ifndef OPENSSL_NO_EC2M
	if (is_char_two) {
		if (!EC_POINT_set_affine_coordinates_GF2m(key->group, point,
			x, y, ctx))
			goto err;
		if (!EC_POINT_get_affine_coordinates_GF2m(key->group, point,
			tx, ty, ctx))
			goto err;
	} else
#endif
	{
		if (!EC_POINT_set_affine_coordinates_GFp(key->group, point,
			x, y, ctx))
			goto err;
		if (!EC_POINT_get_affine_coordinates_GFp(key->group, point,
			tx, ty, ctx))
			goto err;
	}
	/*
	 * Check if retrieved coordinates match originals: if not values are
	 * out of range.
	 */
	if (BN_cmp(x, tx) || BN_cmp(y, ty)) {
		ECerr(EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES,
		    EC_R_COORDINATES_OUT_OF_RANGE);
		goto err;
	}
	if (!EC_KEY_set_public_key(key, point))
		goto err;

	if (EC_KEY_check_key(key) == 0)
		goto err;

	ok = 1;

err:
	BN_CTX_free(ctx);
	EC_POINT_free(point);
	return ok;

}

const EC_GROUP *
EC_KEY_get0_group(const EC_KEY * key)
{
	return key->group;
}

int
EC_KEY_set_group(EC_KEY * key, const EC_GROUP * group)
{
	EC_GROUP_free(key->group);
	key->group = EC_GROUP_dup(group);
	return (key->group == NULL) ? 0 : 1;
}

const BIGNUM *
EC_KEY_get0_private_key(const EC_KEY * key)
{
	return key->priv_key;
}

int
EC_KEY_set_private_key(EC_KEY * key, const BIGNUM * priv_key)
{
	BN_clear_free(key->priv_key);
	key->priv_key = BN_dup(priv_key);
	return (key->priv_key == NULL) ? 0 : 1;
}

const EC_POINT *
EC_KEY_get0_public_key(const EC_KEY * key)
{
	return key->pub_key;
}

int
EC_KEY_set_public_key(EC_KEY * key, const EC_POINT * pub_key)
{
	EC_POINT_free(key->pub_key);
	key->pub_key = EC_POINT_dup(pub_key, key->group);
	return (key->pub_key == NULL) ? 0 : 1;
}

unsigned int
EC_KEY_get_enc_flags(const EC_KEY * key)
{
	return key->enc_flag;
}

void
EC_KEY_set_enc_flags(EC_KEY * key, unsigned int flags)
{
	key->enc_flag = flags;
}

point_conversion_form_t
EC_KEY_get_conv_form(const EC_KEY * key)
{
	return key->conv_form;
}

void
EC_KEY_set_conv_form(EC_KEY * key, point_conversion_form_t cform)
{
	key->conv_form = cform;
	if (key->group != NULL)
		EC_GROUP_set_point_conversion_form(key->group, cform);
}

void *
EC_KEY_get_key_method_data(EC_KEY *key,
    void *(*dup_func) (void *),
    void (*free_func) (void *),
    void (*clear_free_func) (void *))
{
	void *ret;

	CRYPTO_r_lock(CRYPTO_LOCK_EC);
	ret = EC_EX_DATA_get_data(key->method_data, dup_func, free_func, clear_free_func);
	CRYPTO_r_unlock(CRYPTO_LOCK_EC);

	return ret;
}

void *
EC_KEY_insert_key_method_data(EC_KEY * key, void *data,
    void *(*dup_func) (void *),
    void (*free_func) (void *),
    void (*clear_free_func) (void *))
{
	EC_EXTRA_DATA *ex_data;

	CRYPTO_w_lock(CRYPTO_LOCK_EC);
	ex_data = EC_EX_DATA_get_data(key->method_data, dup_func, free_func, clear_free_func);
	if (ex_data == NULL)
		EC_EX_DATA_set_data(&key->method_data, data, dup_func, free_func, clear_free_func);
	CRYPTO_w_unlock(CRYPTO_LOCK_EC);

	return ex_data;
}

void
EC_KEY_set_asn1_flag(EC_KEY * key, int flag)
{
	if (key->group != NULL)
		EC_GROUP_set_asn1_flag(key->group, flag);
}

int
EC_KEY_precompute_mult(EC_KEY * key, BN_CTX * ctx)
{
	if (key->group == NULL)
		return 0;
	return EC_GROUP_precompute_mult(key->group, ctx);
}

int
EC_KEY_get_flags(const EC_KEY * key)
{
	return key->flags;
}

void
EC_KEY_set_flags(EC_KEY * key, int flags)
{
	key->flags |= flags;
}

void
EC_KEY_clear_flags(EC_KEY * key, int flags)
{
	key->flags &= ~flags;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: ec_key.c,v 1.12 2015/09/10 15:56:25 jsing Exp $ */
2			/*
3			* Written by Nils Larsch for the OpenSSL project.
4			*/
5			/* ====================================================================
6			* Copyright (c) 1998-2005 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			* openssl-core@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			* This product includes cryptographic software written by Eric Young
54			* (eay@cryptsoft.com). This product includes software written by Tim
55			* Hudson (tjh@cryptsoft.com).
56			*
57			*/
58			/* ====================================================================
59			* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
60			* Portions originally developed by SUN MICROSYSTEMS, INC., and
61			* contributed to the OpenSSL project.
62			*/
63
64			#include <string.h>
65
66			#include <openssl/opensslconf.h>
67
68			#include "ec_lcl.h"
69			#include <openssl/err.h>
70
71			EC_KEY *
72			EC_KEY_new(void)
73		207	{
74			EC_KEY *ret;
75
76		207	ret = malloc(sizeof(EC_KEY));
77	✗✓	207	if (ret == NULL) {
78			ECerr(EC_F_EC_KEY_NEW, ERR_R_MALLOC_FAILURE);
79			return (NULL);
80			}
81		207	ret->version = 1;
82		207	ret->flags = 0;
83		207	ret->group = NULL;
84		207	ret->pub_key = NULL;
85		207	ret->priv_key = NULL;
86		207	ret->enc_flag = 0;
87		207	ret->conv_form = POINT_CONVERSION_UNCOMPRESSED;
88		207	ret->references = 1;
89		207	ret->method_data = NULL;
90		207	return (ret);
91			}
92
93			EC_KEY *
94			EC_KEY_new_by_curve_name(int nid)
95		36	{
96		36	EC_KEY *ret = EC_KEY_new();
97	✗✓	36	if (ret == NULL)
98			return NULL;
99		36	ret->group = EC_GROUP_new_by_curve_name(nid);
100	✗✓	36	if (ret->group == NULL) {
101			EC_KEY_free(ret);
102			return NULL;
103			}
104		36	return ret;
105			}
106
107			void
108			EC_KEY_free(EC_KEY * r)
109		213	{
110			int i;
111
112	✓✓	213	if (r == NULL)
113		10	return;
114
115		203	i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_EC);
116	✗✓	203	if (i > 0)
117			return;
118
119		203	EC_GROUP_free(r->group);
120		203	EC_POINT_free(r->pub_key);
121		203	BN_clear_free(r->priv_key);
122
123		203	EC_EX_DATA_free_all_data(&r->method_data);
124
125		203	explicit_bzero((void *) r, sizeof(EC_KEY));
126
127		203	free(r);
128			}
129
130			EC_KEY *
131			EC_KEY_copy(EC_KEY * dest, const EC_KEY * src)
132			{
133			EC_EXTRA_DATA *d;
134
135			if (dest == NULL \|\| src == NULL) {
136			ECerr(EC_F_EC_KEY_COPY, ERR_R_PASSED_NULL_PARAMETER);
137			return NULL;
138			}
139			/* copy the parameters */
140			if (src->group) {
141			const EC_METHOD *meth = EC_GROUP_method_of(src->group);
142			/* clear the old group */
143			EC_GROUP_free(dest->group);
144			dest->group = EC_GROUP_new(meth);
145			if (dest->group == NULL)
146			return NULL;
147			if (!EC_GROUP_copy(dest->group, src->group))
148			return NULL;
149			}
150			/* copy the public key */
151			if (src->pub_key && src->group) {
152			EC_POINT_free(dest->pub_key);
153			dest->pub_key = EC_POINT_new(src->group);
154			if (dest->pub_key == NULL)
155			return NULL;
156			if (!EC_POINT_copy(dest->pub_key, src->pub_key))
157			return NULL;
158			}
159			/* copy the private key */
160			if (src->priv_key) {
161			if (dest->priv_key == NULL) {
162			dest->priv_key = BN_new();
163			if (dest->priv_key == NULL)
164			return NULL;
165			}
166			if (!BN_copy(dest->priv_key, src->priv_key))
167			return NULL;
168			}
169			/* copy method/extra data */
170			EC_EX_DATA_free_all_data(&dest->method_data);
171
172			for (d = src->method_data; d != NULL; d = d->next) {
173			void *t = d->dup_func(d->data);
174
175			if (t == NULL)
176			return 0;
177			if (!EC_EX_DATA_set_data(&dest->method_data, t, d->dup_func,
178			d->free_func, d->clear_free_func))
179			return 0;
180			}
181
182			/* copy the rest */
183			dest->enc_flag = src->enc_flag;
184			dest->conv_form = src->conv_form;
185			dest->version = src->version;
186			dest->flags = src->flags;
187
188			return dest;
189			}
190
191			EC_KEY *
192			EC_KEY_dup(const EC_KEY * ec_key)
193			{
194			EC_KEY *ret = EC_KEY_new();
195			if (ret == NULL)
196			return NULL;
197			if (EC_KEY_copy(ret, ec_key) == NULL) {
198			EC_KEY_free(ret);
199			return NULL;
200			}
201			return ret;
202			}
203
204			int
205			EC_KEY_up_ref(EC_KEY * r)
206			{
207			int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_EC);
208			return ((i > 1) ? 1 : 0);
209			}
210
211			int
212			EC_KEY_generate_key(EC_KEY * eckey)
213		184	{
214		184	int ok = 0;
215		184	BN_CTX *ctx = NULL;
216		184	BIGNUM priv_key = NULL, order = NULL;
217		184	EC_POINT *pub_key = NULL;
218
219	✓✗✗✓	184	if (!eckey \|\| !eckey->group) {
220			ECerr(EC_F_EC_KEY_GENERATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
221			return 0;
222			}
223	✗✓	184	if ((order = BN_new()) == NULL)
224			goto err;
225	✗✓	184	if ((ctx = BN_CTX_new()) == NULL)
226			goto err;
227
228	✓✗	184	if (eckey->priv_key == NULL) {
229		184	priv_key = BN_new();
230	✗✓	184	if (priv_key == NULL)
231			goto err;
232			} else
233			priv_key = eckey->priv_key;
234
235	✗✓	184	if (!EC_GROUP_get_order(eckey->group, order, ctx))
236			goto err;
237
238			do
239	✗✓	184	if (!BN_rand_range(priv_key, order))
240			goto err;
241	✗✓	184	while (BN_is_zero(priv_key));
242
243	✓✗	184	if (eckey->pub_key == NULL) {
244		184	pub_key = EC_POINT_new(eckey->group);
245	✗✓	184	if (pub_key == NULL)
246			goto err;
247			} else
248			pub_key = eckey->pub_key;
249
250	✗✓	184	if (!EC_POINT_mul(eckey->group, pub_key, priv_key, NULL, NULL, ctx))
251			goto err;
252
253		184	eckey->priv_key = priv_key;
254		184	eckey->pub_key = pub_key;
255
256		184	ok = 1;
257
258		184	err:
259		184	BN_free(order);
260	✓✗✗✓	184	if (pub_key != NULL && eckey->pub_key == NULL)
261			EC_POINT_free(pub_key);
262	✓✗✗✓	184	if (priv_key != NULL && eckey->priv_key == NULL)
263			BN_free(priv_key);
264		184	BN_CTX_free(ctx);
265		184	return (ok);
266			}
267
268			int
269			EC_KEY_check_key(const EC_KEY * eckey)
270		76	{
271		76	int ok = 0;
272		76	BN_CTX *ctx = NULL;
273		76	const BIGNUM *order = NULL;
274		76	EC_POINT *point = NULL;
275
276	✓✗✓✗ ✗✓	76	if (!eckey \|\| !eckey->group \|\| !eckey->pub_key) {
277			ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_PASSED_NULL_PARAMETER);
278			return 0;
279			}
280	✗✓	76	if (EC_POINT_is_at_infinity(eckey->group, eckey->pub_key) > 0) {
281			ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_AT_INFINITY);
282			goto err;
283			}
284	✗✓	76	if ((ctx = BN_CTX_new()) == NULL)
285			goto err;
286	✗✓	76	if ((point = EC_POINT_new(eckey->group)) == NULL)
287			goto err;
288
289			/* testing whether the pub_key is on the elliptic curve */
290	✗✓	76	if (EC_POINT_is_on_curve(eckey->group, eckey->pub_key, ctx) <= 0) {
291			ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_IS_NOT_ON_CURVE);
292			goto err;
293			}
294			/* testing whether pub_key * order is the point at infinity */
295		76	order = &eckey->group->order;
296	✗✓	76	if (BN_is_zero(order)) {
297			ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_GROUP_ORDER);
298			goto err;
299			}
300	✗✓	76	if (!EC_POINT_mul(eckey->group, point, NULL, eckey->pub_key, order, ctx)) {
301			ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB);
302			goto err;
303			}
304	✗✓	76	if (EC_POINT_is_at_infinity(eckey->group, point) <= 0) {
305			ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER);
306			goto err;
307			}
308			/*
309			* in case the priv_key is present : check if generator * priv_key ==
310			* pub_key
311			*/
312	✓✗	76	if (eckey->priv_key) {
313	✗✓	76	if (BN_cmp(eckey->priv_key, order) >= 0) {
314			ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER);
315			goto err;
316			}
317	✗✓	76	if (!EC_POINT_mul(eckey->group, point, eckey->priv_key,
318			NULL, NULL, ctx)) {
319			ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB);
320			goto err;
321			}
322	✗✓	76	if (EC_POINT_cmp(eckey->group, point, eckey->pub_key,
323			ctx) != 0) {
324			ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_PRIVATE_KEY);
325			goto err;
326			}
327			}
328		76	ok = 1;
329		76	err:
330		76	BN_CTX_free(ctx);
331		76	EC_POINT_free(point);
332		76	return (ok);
333			}
334
335			int
336			EC_KEY_set_public_key_affine_coordinates(EC_KEY * key, BIGNUM * x, BIGNUM * y)
337			{
338			BN_CTX *ctx = NULL;
339			BIGNUM tx, ty;
340			EC_POINT *point = NULL;
341			int ok = 0, tmp_nid, is_char_two = 0;
342
343			if (!key \|\| !key->group \|\| !x \|\| !y) {
344			ECerr(EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES,
345			ERR_R_PASSED_NULL_PARAMETER);
346			return 0;
347			}
348			ctx = BN_CTX_new();
349			if (!ctx)
350			goto err;
351
352			point = EC_POINT_new(key->group);
353
354			if (!point)
355			goto err;
356
357			tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(key->group));
358
359			if (tmp_nid == NID_X9_62_characteristic_two_field)
360			is_char_two = 1;
361
362			if ((tx = BN_CTX_get(ctx)) == NULL)
363			goto err;
364			if ((ty = BN_CTX_get(ctx)) == NULL)
365			goto err;
366
367			#ifndef OPENSSL_NO_EC2M
368			if (is_char_two) {
369			if (!EC_POINT_set_affine_coordinates_GF2m(key->group, point,
370			x, y, ctx))
371			goto err;
372			if (!EC_POINT_get_affine_coordinates_GF2m(key->group, point,
373			tx, ty, ctx))
374			goto err;
375			} else
376			#endif
377			{
378			if (!EC_POINT_set_affine_coordinates_GFp(key->group, point,
379			x, y, ctx))
380			goto err;
381			if (!EC_POINT_get_affine_coordinates_GFp(key->group, point,
382			tx, ty, ctx))
383			goto err;
384			}
385			/*
386			* Check if retrieved coordinates match originals: if not values are
387			* out of range.
388			*/
389			if (BN_cmp(x, tx) \|\| BN_cmp(y, ty)) {
390			ECerr(EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES,
391			EC_R_COORDINATES_OUT_OF_RANGE);
392			goto err;
393			}
394			if (!EC_KEY_set_public_key(key, point))
395			goto err;
396
397			if (EC_KEY_check_key(key) == 0)
398			goto err;
399
400			ok = 1;
401
402			err:
403			BN_CTX_free(ctx);
404			EC_POINT_free(point);
405			return ok;
406
407			}
408
409			const EC_GROUP *
410			EC_KEY_get0_group(const EC_KEY * key)
411		810	{
412		810	return key->group;
413			}
414
415			int
416			EC_KEY_set_group(EC_KEY * key, const EC_GROUP * group)
417		171	{
418		171	EC_GROUP_free(key->group);
419		171	key->group = EC_GROUP_dup(group);
420		171	return (key->group == NULL) ? 0 : 1;
421			}
422
423			const BIGNUM *
424			EC_KEY_get0_private_key(const EC_KEY * key)
425		114	{
426		114	return key->priv_key;
427			}
428
429			int
430			EC_KEY_set_private_key(EC_KEY * key, const BIGNUM * priv_key)
431		6	{
432		6	BN_clear_free(key->priv_key);
433		6	key->priv_key = BN_dup(priv_key);
434		6	return (key->priv_key == NULL) ? 0 : 1;
435			}
436
437			const EC_POINT *
438			EC_KEY_get0_public_key(const EC_KEY * key)
439		455	{
440		455	return key->pub_key;
441			}
442
443			int
444			EC_KEY_set_public_key(EC_KEY * key, const EC_POINT * pub_key)
445		8	{
446		8	EC_POINT_free(key->pub_key);
447		8	key->pub_key = EC_POINT_dup(pub_key, key->group);
448		8	return (key->pub_key == NULL) ? 0 : 1;
449			}
450
451			unsigned int
452			EC_KEY_get_enc_flags(const EC_KEY * key)
453			{
454			return key->enc_flag;
455			}
456
457			void
458			EC_KEY_set_enc_flags(EC_KEY * key, unsigned int flags)
459			{
460			key->enc_flag = flags;
461			}
462
463			point_conversion_form_t
464			EC_KEY_get_conv_form(const EC_KEY * key)
465			{
466			return key->conv_form;
467			}
468
469			void
470			EC_KEY_set_conv_form(EC_KEY * key, point_conversion_form_t cform)
471			{
472			key->conv_form = cform;
473			if (key->group != NULL)
474			EC_GROUP_set_point_conversion_form(key->group, cform);
475			}
476
477			void *
478			EC_KEY_get_key_method_data(EC_KEY *key,
479			void (dup_func) (void *),
480			void (free_func) (void ),
481			void (clear_free_func) (void ))
482		649	{
483			void *ret;
484
485		649	CRYPTO_r_lock(CRYPTO_LOCK_EC);
486		649	ret = EC_EX_DATA_get_data(key->method_data, dup_func, free_func, clear_free_func);
487		649	CRYPTO_r_unlock(CRYPTO_LOCK_EC);
488
489		649	return ret;
490			}
491
492			void *
493			EC_KEY_insert_key_method_data(EC_KEY * key, void *data,
494			void (dup_func) (void *),
495			void (free_func) (void ),
496			void (clear_free_func) (void ))
497		192	{
498			EC_EXTRA_DATA *ex_data;
499
500		192	CRYPTO_w_lock(CRYPTO_LOCK_EC);
501		192	ex_data = EC_EX_DATA_get_data(key->method_data, dup_func, free_func, clear_free_func);
502	✓✗	192	if (ex_data == NULL)
503		192	EC_EX_DATA_set_data(&key->method_data, data, dup_func, free_func, clear_free_func);
504		192	CRYPTO_w_unlock(CRYPTO_LOCK_EC);
505
506		192	return ex_data;
507			}
508
509			void
510			EC_KEY_set_asn1_flag(EC_KEY * key, int flag)
511			{
512			if (key->group != NULL)
513			EC_GROUP_set_asn1_flag(key->group, flag);
514			}
515
516			int
517			EC_KEY_precompute_mult(EC_KEY * key, BN_CTX * ctx)
518			{
519			if (key->group == NULL)
520			return 0;
521			return EC_GROUP_precompute_mult(key->group, ctx);
522			}
523
524			int
525			EC_KEY_get_flags(const EC_KEY * key)
526			{
527			return key->flags;
528			}
529
530			void
531			EC_KEY_set_flags(EC_KEY * key, int flags)
532			{
533			key->flags \|= flags;
534			}
535
536			void
537			EC_KEY_clear_flags(EC_KEY * key, int flags)
538			{
539			key->flags &= ~flags;
540			}