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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/ec/ec_print.c	Lines:	8	56	14.3 %
Date:	2017-11-07	Branches:	3	34	8.8 %


/* $OpenBSD: ec_print.c,v 1.7 2014/12/03 19:53:20 deraadt Exp $ */
/* ====================================================================
 * Copyright (c) 1998-2002 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 <openssl/crypto.h>
#include "ec_lcl.h"

BIGNUM *
EC_POINT_point2bn(const EC_GROUP * group, const EC_POINT * point,
    point_conversion_form_t form, BIGNUM * ret, BN_CTX * ctx)
{
	size_t buf_len = 0;
	unsigned char *buf;

	buf_len = EC_POINT_point2oct(group, point, form,
	    NULL, 0, ctx);
	if (buf_len == 0)
		return NULL;

	if ((buf = malloc(buf_len)) == NULL)
		return NULL;

	if (!EC_POINT_point2oct(group, point, form, buf, buf_len, ctx)) {
		free(buf);
		return NULL;
	}
	ret = BN_bin2bn(buf, buf_len, ret);

	free(buf);

	return ret;
}

EC_POINT *
EC_POINT_bn2point(const EC_GROUP * group,
    const BIGNUM * bn, EC_POINT * point, BN_CTX * ctx)
{
	size_t buf_len = 0;
	unsigned char *buf;
	EC_POINT *ret;

	if ((buf_len = BN_num_bytes(bn)) == 0)
		return NULL;
	buf = malloc(buf_len);
	if (buf == NULL)
		return NULL;

	if (!BN_bn2bin(bn, buf)) {
		free(buf);
		return NULL;
	}
	if (point == NULL) {
		if ((ret = EC_POINT_new(group)) == NULL) {
			free(buf);
			return NULL;
		}
	} else
		ret = point;

	if (!EC_POINT_oct2point(group, ret, buf, buf_len, ctx)) {
		if (point == NULL)
			EC_POINT_clear_free(ret);
		free(buf);
		return NULL;
	}
	free(buf);
	return ret;
}

static const char *HEX_DIGITS = "0123456789ABCDEF";

/* the return value must be freed (using free()) */
char *
EC_POINT_point2hex(const EC_GROUP * group, const EC_POINT * point,
    point_conversion_form_t form, BN_CTX * ctx)
{
	char *ret, *p;
	size_t buf_len = 0, i;
	unsigned char *buf, *pbuf;

	buf_len = EC_POINT_point2oct(group, point, form,
	    NULL, 0, ctx);
	if (buf_len == 0 || buf_len + 1 == 0)
		return NULL;

	if ((buf = malloc(buf_len)) == NULL)
		return NULL;

	if (!EC_POINT_point2oct(group, point, form, buf, buf_len, ctx)) {
		free(buf);
		return NULL;
	}
	ret = reallocarray(NULL, buf_len + 1, 2);
	if (ret == NULL) {
		free(buf);
		return NULL;
	}
	p = ret;
	pbuf = buf;
	for (i = buf_len; i > 0; i--) {
		int v = (int) *(pbuf++);
		*(p++) = HEX_DIGITS[v >> 4];
		*(p++) = HEX_DIGITS[v & 0x0F];
	}
	*p = '\0';

	free(buf);

	return ret;
}

EC_POINT *
EC_POINT_hex2point(const EC_GROUP * group, const char *buf,
    EC_POINT * point, BN_CTX * ctx)
{
	EC_POINT *ret = NULL;
	BIGNUM *tmp_bn = NULL;

	if (!BN_hex2bn(&tmp_bn, buf))
		return NULL;

	ret = EC_POINT_bn2point(group, tmp_bn, point, ctx);

	BN_clear_free(tmp_bn);

	return ret;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: ec_print.c,v 1.7 2014/12/03 19:53:20 deraadt Exp $ */
2			/* ====================================================================
3			* Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
4			*
5			* Redistribution and use in source and binary forms, with or without
6			* modification, are permitted provided that the following conditions
7			* are met:
8			*
9			* 1. Redistributions of source code must retain the above copyright
10			* notice, this list of conditions and the following disclaimer.
11			*
12			* 2. Redistributions in binary form must reproduce the above copyright
13			* notice, this list of conditions and the following disclaimer in
14			* the documentation and/or other materials provided with the
15			* distribution.
16			*
17			* 3. All advertising materials mentioning features or use of this
18			* software must display the following acknowledgment:
19			* "This product includes software developed by the OpenSSL Project
20			* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21			*
22			* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23			* endorse or promote products derived from this software without
24			* prior written permission. For written permission, please contact
25			* openssl-core@openssl.org.
26			*
27			* 5. Products derived from this software may not be called "OpenSSL"
28			* nor may "OpenSSL" appear in their names without prior written
29			* permission of the OpenSSL Project.
30			*
31			* 6. Redistributions of any form whatsoever must retain the following
32			* acknowledgment:
33			* "This product includes software developed by the OpenSSL Project
34			* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35			*
36			* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37			* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39			* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40			* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41			* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42			* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43			* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45			* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46			* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47			* OF THE POSSIBILITY OF SUCH DAMAGE.
48			* ====================================================================
49			*
50			* This product includes cryptographic software written by Eric Young
51			* (eay@cryptsoft.com). This product includes software written by Tim
52			* Hudson (tjh@cryptsoft.com).
53			*
54			*/
55
56			#include <openssl/crypto.h>
57			#include "ec_lcl.h"
58
59			BIGNUM *
60			EC_POINT_point2bn(const EC_GROUP * group, const EC_POINT * point,
61			point_conversion_form_t form, BIGNUM * ret, BN_CTX * ctx)
62			{
63			size_t buf_len = 0;
64			unsigned char *buf;
65
66		1092	buf_len = EC_POINT_point2oct(group, point, form,
67			NULL, 0, ctx);
68	✗✓	546	if (buf_len == 0)
69			return NULL;
70
71	✗✓	546	if ((buf = malloc(buf_len)) == NULL)
72			return NULL;
73
74	✗✓	546	if (!EC_POINT_point2oct(group, point, form, buf, buf_len, ctx)) {
75			free(buf);
76			return NULL;
77			}
78		546	ret = BN_bin2bn(buf, buf_len, ret);
79
80		546	free(buf);
81
82		546	return ret;
83		546	}
84
85			EC_POINT *
86			EC_POINT_bn2point(const EC_GROUP * group,
87			const BIGNUM * bn, EC_POINT * point, BN_CTX * ctx)
88			{
89			size_t buf_len = 0;
90			unsigned char *buf;
91			EC_POINT *ret;
92
93			if ((buf_len = BN_num_bytes(bn)) == 0)
94			return NULL;
95			buf = malloc(buf_len);
96			if (buf == NULL)
97			return NULL;
98
99			if (!BN_bn2bin(bn, buf)) {
100			free(buf);
101			return NULL;
102			}
103			if (point == NULL) {
104			if ((ret = EC_POINT_new(group)) == NULL) {
105			free(buf);
106			return NULL;
107			}
108			} else
109			ret = point;
110
111			if (!EC_POINT_oct2point(group, ret, buf, buf_len, ctx)) {
112			if (point == NULL)
113			EC_POINT_clear_free(ret);
114			free(buf);
115			return NULL;
116			}
117			free(buf);
118			return ret;
119			}
120
121			static const char *HEX_DIGITS = "0123456789ABCDEF";
122
123			/* the return value must be freed (using free()) */
124			char *
125			EC_POINT_point2hex(const EC_GROUP * group, const EC_POINT * point,
126			point_conversion_form_t form, BN_CTX * ctx)
127			{
128			char ret, p;
129			size_t buf_len = 0, i;
130			unsigned char buf, pbuf;
131
132			buf_len = EC_POINT_point2oct(group, point, form,
133			NULL, 0, ctx);
134			if (buf_len == 0 \|\| buf_len + 1 == 0)
135			return NULL;
136
137			if ((buf = malloc(buf_len)) == NULL)
138			return NULL;
139
140			if (!EC_POINT_point2oct(group, point, form, buf, buf_len, ctx)) {
141			free(buf);
142			return NULL;
143			}
144			ret = reallocarray(NULL, buf_len + 1, 2);
145			if (ret == NULL) {
146			free(buf);
147			return NULL;
148			}
149			p = ret;
150			pbuf = buf;
151			for (i = buf_len; i > 0; i--) {
152			int v = (int) *(pbuf++);
153			*(p++) = HEX_DIGITS[v >> 4];
154			*(p++) = HEX_DIGITS[v & 0x0F];
155			}
156			*p = '\0';
157
158			free(buf);
159
160			return ret;
161			}
162
163			EC_POINT *
164			EC_POINT_hex2point(const EC_GROUP * group, const char *buf,
165			EC_POINT * point, BN_CTX * ctx)
166			{
167			EC_POINT *ret = NULL;
168			BIGNUM *tmp_bn = NULL;
169
170			if (!BN_hex2bn(&tmp_bn, buf))
171			return NULL;
172
173			ret = EC_POINT_bn2point(group, tmp_bn, point, ctx);
174
175			BN_clear_free(tmp_bn);
176
177			return ret;
178			}