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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/crypto/../../libssl/src/crypto/ec/ecp_nist.c	Lines:	0	60	0.0 %
Date:	2016-12-06	Branches:	0	40	0.0 %


/* $OpenBSD: ecp_nist.c,v 1.9 2014/07/12 16:03:37 miod Exp $ */
/*
 * Written by Nils Larsch for the OpenSSL project.
 */
/* ====================================================================
 * 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).
 *
 */
/* ====================================================================
 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
 * Portions of this software developed by SUN MICROSYSTEMS, INC.,
 * and contributed to the OpenSSL project.
 */

#include <limits.h>

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

const EC_METHOD *
EC_GFp_nist_method(void)
{
	static const EC_METHOD ret = {
		.flags = EC_FLAGS_DEFAULT_OCT,
		.field_type = NID_X9_62_prime_field,
		.group_init = ec_GFp_simple_group_init,
		.group_finish = ec_GFp_simple_group_finish,
		.group_clear_finish = ec_GFp_simple_group_clear_finish,
		.group_copy = ec_GFp_nist_group_copy,
		.group_set_curve = ec_GFp_nist_group_set_curve,
		.group_get_curve = ec_GFp_simple_group_get_curve,
		.group_get_degree = ec_GFp_simple_group_get_degree,
		.group_check_discriminant =
		ec_GFp_simple_group_check_discriminant,
		.point_init = ec_GFp_simple_point_init,
		.point_finish = ec_GFp_simple_point_finish,
		.point_clear_finish = ec_GFp_simple_point_clear_finish,
		.point_copy = ec_GFp_simple_point_copy,
		.point_set_to_infinity = ec_GFp_simple_point_set_to_infinity,
		.point_set_Jprojective_coordinates_GFp =
		ec_GFp_simple_set_Jprojective_coordinates_GFp,
		.point_get_Jprojective_coordinates_GFp =
		ec_GFp_simple_get_Jprojective_coordinates_GFp,
		.point_set_affine_coordinates =
		ec_GFp_simple_point_set_affine_coordinates,
		.point_get_affine_coordinates =
		ec_GFp_simple_point_get_affine_coordinates,
		.add = ec_GFp_simple_add,
		.dbl = ec_GFp_simple_dbl,
		.invert = ec_GFp_simple_invert,
		.is_at_infinity = ec_GFp_simple_is_at_infinity,
		.is_on_curve = ec_GFp_simple_is_on_curve,
		.point_cmp = ec_GFp_simple_cmp,
		.make_affine = ec_GFp_simple_make_affine,
		.points_make_affine = ec_GFp_simple_points_make_affine,
		.field_mul = ec_GFp_nist_field_mul,
		.field_sqr = ec_GFp_nist_field_sqr
	};

	return &ret;
}

int
ec_GFp_nist_group_copy(EC_GROUP * dest, const EC_GROUP * src)
{
	dest->field_mod_func = src->field_mod_func;

	return ec_GFp_simple_group_copy(dest, src);
}

int
ec_GFp_nist_group_set_curve(EC_GROUP *group, const BIGNUM *p,
    const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx)
{
	int ret = 0;
	BN_CTX *new_ctx = NULL;
	BIGNUM *tmp_bn;

	if (ctx == NULL)
		if ((ctx = new_ctx = BN_CTX_new()) == NULL)
			return 0;

	BN_CTX_start(ctx);
	if ((tmp_bn = BN_CTX_get(ctx)) == NULL)
		goto err;

	if (BN_ucmp(BN_get0_nist_prime_192(), p) == 0)
		group->field_mod_func = BN_nist_mod_192;
	else if (BN_ucmp(BN_get0_nist_prime_224(), p) == 0)
		group->field_mod_func = BN_nist_mod_224;
	else if (BN_ucmp(BN_get0_nist_prime_256(), p) == 0)
		group->field_mod_func = BN_nist_mod_256;
	else if (BN_ucmp(BN_get0_nist_prime_384(), p) == 0)
		group->field_mod_func = BN_nist_mod_384;
	else if (BN_ucmp(BN_get0_nist_prime_521(), p) == 0)
		group->field_mod_func = BN_nist_mod_521;
	else {
		ECerr(EC_F_EC_GFP_NIST_GROUP_SET_CURVE, EC_R_NOT_A_NIST_PRIME);
		goto err;
	}

	ret = ec_GFp_simple_group_set_curve(group, p, a, b, ctx);

err:
	BN_CTX_end(ctx);
	BN_CTX_free(new_ctx);
	return ret;
}


int
ec_GFp_nist_field_mul(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a,
    const BIGNUM *b, BN_CTX *ctx)
{
	int ret = 0;
	BN_CTX *ctx_new = NULL;

	if (!group || !r || !a || !b) {
		ECerr(EC_F_EC_GFP_NIST_FIELD_MUL, ERR_R_PASSED_NULL_PARAMETER);
		goto err;
	}
	if (!ctx)
		if ((ctx_new = ctx = BN_CTX_new()) == NULL)
			goto err;

	if (!BN_mul(r, a, b, ctx))
		goto err;
	if (!group->field_mod_func(r, r, &group->field, ctx))
		goto err;

	ret = 1;
err:
	BN_CTX_free(ctx_new);
	return ret;
}


int
ec_GFp_nist_field_sqr(const EC_GROUP * group, BIGNUM * r, const BIGNUM * a,
    BN_CTX * ctx)
{
	int ret = 0;
	BN_CTX *ctx_new = NULL;

	if (!group || !r || !a) {
		ECerr(EC_F_EC_GFP_NIST_FIELD_SQR, EC_R_PASSED_NULL_PARAMETER);
		goto err;
	}
	if (!ctx)
		if ((ctx_new = ctx = BN_CTX_new()) == NULL)
			goto err;

	if (!BN_sqr(r, a, ctx))
		goto err;
	if (!group->field_mod_func(r, r, &group->field, ctx))
		goto err;

	ret = 1;
err:
	BN_CTX_free(ctx_new);
	return ret;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: ecp_nist.c,v 1.9 2014/07/12 16:03:37 miod Exp $ */
2			/*
3			* Written by Nils Larsch for the OpenSSL project.
4			*/
5			/* ====================================================================
6			* Copyright (c) 1998-2003 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 of this software developed by SUN MICROSYSTEMS, INC.,
61			* and contributed to the OpenSSL project.
62			*/
63
64			#include <limits.h>
65
66			#include <openssl/err.h>
67			#include <openssl/obj_mac.h>
68			#include "ec_lcl.h"
69
70			const EC_METHOD *
71			EC_GFp_nist_method(void)
72			{
73			static const EC_METHOD ret = {
74			.flags = EC_FLAGS_DEFAULT_OCT,
75			.field_type = NID_X9_62_prime_field,
76			.group_init = ec_GFp_simple_group_init,
77			.group_finish = ec_GFp_simple_group_finish,
78			.group_clear_finish = ec_GFp_simple_group_clear_finish,
79			.group_copy = ec_GFp_nist_group_copy,
80			.group_set_curve = ec_GFp_nist_group_set_curve,
81			.group_get_curve = ec_GFp_simple_group_get_curve,
82			.group_get_degree = ec_GFp_simple_group_get_degree,
83			.group_check_discriminant =
84			ec_GFp_simple_group_check_discriminant,
85			.point_init = ec_GFp_simple_point_init,
86			.point_finish = ec_GFp_simple_point_finish,
87			.point_clear_finish = ec_GFp_simple_point_clear_finish,
88			.point_copy = ec_GFp_simple_point_copy,
89			.point_set_to_infinity = ec_GFp_simple_point_set_to_infinity,
90			.point_set_Jprojective_coordinates_GFp =
91			ec_GFp_simple_set_Jprojective_coordinates_GFp,
92			.point_get_Jprojective_coordinates_GFp =
93			ec_GFp_simple_get_Jprojective_coordinates_GFp,
94			.point_set_affine_coordinates =
95			ec_GFp_simple_point_set_affine_coordinates,
96			.point_get_affine_coordinates =
97			ec_GFp_simple_point_get_affine_coordinates,
98			.add = ec_GFp_simple_add,
99			.dbl = ec_GFp_simple_dbl,
100			.invert = ec_GFp_simple_invert,
101			.is_at_infinity = ec_GFp_simple_is_at_infinity,
102			.is_on_curve = ec_GFp_simple_is_on_curve,
103			.point_cmp = ec_GFp_simple_cmp,
104			.make_affine = ec_GFp_simple_make_affine,
105			.points_make_affine = ec_GFp_simple_points_make_affine,
106			.field_mul = ec_GFp_nist_field_mul,
107			.field_sqr = ec_GFp_nist_field_sqr
108			};
109
110			return &ret;
111			}
112
113			int
114			ec_GFp_nist_group_copy(EC_GROUP * dest, const EC_GROUP * src)
115			{
116			dest->field_mod_func = src->field_mod_func;
117
118			return ec_GFp_simple_group_copy(dest, src);
119			}
120
121			int
122			ec_GFp_nist_group_set_curve(EC_GROUP group, const BIGNUM p,
123			const BIGNUM a, const BIGNUM b, BN_CTX *ctx)
124			{
125			int ret = 0;
126			BN_CTX *new_ctx = NULL;
127			BIGNUM *tmp_bn;
128
129			if (ctx == NULL)
130			if ((ctx = new_ctx = BN_CTX_new()) == NULL)
131			return 0;
132
133			BN_CTX_start(ctx);
134			if ((tmp_bn = BN_CTX_get(ctx)) == NULL)
135			goto err;
136
137			if (BN_ucmp(BN_get0_nist_prime_192(), p) == 0)
138			group->field_mod_func = BN_nist_mod_192;
139			else if (BN_ucmp(BN_get0_nist_prime_224(), p) == 0)
140			group->field_mod_func = BN_nist_mod_224;
141			else if (BN_ucmp(BN_get0_nist_prime_256(), p) == 0)
142			group->field_mod_func = BN_nist_mod_256;
143			else if (BN_ucmp(BN_get0_nist_prime_384(), p) == 0)
144			group->field_mod_func = BN_nist_mod_384;
145			else if (BN_ucmp(BN_get0_nist_prime_521(), p) == 0)
146			group->field_mod_func = BN_nist_mod_521;
147			else {
148			ECerr(EC_F_EC_GFP_NIST_GROUP_SET_CURVE, EC_R_NOT_A_NIST_PRIME);
149			goto err;
150			}
151
152			ret = ec_GFp_simple_group_set_curve(group, p, a, b, ctx);
153
154			err:
155			BN_CTX_end(ctx);
156			BN_CTX_free(new_ctx);
157			return ret;
158			}
159
160
161			int
162			ec_GFp_nist_field_mul(const EC_GROUP group, BIGNUM r, const BIGNUM *a,
163			const BIGNUM b, BN_CTX ctx)
164			{
165			int ret = 0;
166			BN_CTX *ctx_new = NULL;
167
168			if (!group \|\| !r \|\| !a \|\| !b) {
169			ECerr(EC_F_EC_GFP_NIST_FIELD_MUL, ERR_R_PASSED_NULL_PARAMETER);
170			goto err;
171			}
172			if (!ctx)
173			if ((ctx_new = ctx = BN_CTX_new()) == NULL)
174			goto err;
175
176			if (!BN_mul(r, a, b, ctx))
177			goto err;
178			if (!group->field_mod_func(r, r, &group->field, ctx))
179			goto err;
180
181			ret = 1;
182			err:
183			BN_CTX_free(ctx_new);
184			return ret;
185			}
186
187
188			int
189			ec_GFp_nist_field_sqr(const EC_GROUP * group, BIGNUM * r, const BIGNUM * a,
190			BN_CTX * ctx)
191			{
192			int ret = 0;
193			BN_CTX *ctx_new = NULL;
194
195			if (!group \|\| !r \|\| !a) {
196			ECerr(EC_F_EC_GFP_NIST_FIELD_SQR, EC_R_PASSED_NULL_PARAMETER);
197			goto err;
198			}
199			if (!ctx)
200			if ((ctx_new = ctx = BN_CTX_new()) == NULL)
201			goto err;
202
203			if (!BN_sqr(r, a, ctx))
204			goto err;
205			if (!group->field_mod_func(r, r, &group->field, ctx))
206			goto err;
207
208			ret = 1;
209			err:
210			BN_CTX_free(ctx_new);
211			return ret;
212			}