Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/rsa/rsa_saos.c	Lines:	0	42	0.0 %
Date:	2017-11-07	Branches:	0	18	0.0 %


/* $OpenBSD: rsa_saos.c,v 1.23 2017/05/02 03:59:45 deraadt Exp $ */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * 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 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 acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS 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 AUTHOR OR 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.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include <string.h>

#include <openssl/bn.h>
#include <openssl/err.h>
#include <openssl/objects.h>
#include <openssl/rsa.h>
#include <openssl/x509.h>

int
RSA_sign_ASN1_OCTET_STRING(int type, const unsigned char *m, unsigned int m_len,
    unsigned char *sigret, unsigned int *siglen, RSA *rsa)
{
	ASN1_OCTET_STRING sig;
	int i, j, ret = 1;
	unsigned char *p, *s;

	sig.type = V_ASN1_OCTET_STRING;
	sig.length = m_len;
	sig.data = (unsigned char *)m;

	i = i2d_ASN1_OCTET_STRING(&sig, NULL);
	j = RSA_size(rsa);
	if (i > (j - RSA_PKCS1_PADDING_SIZE)) {
		RSAerror(RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY);
		return 0;
	}
	s = malloc(j + 1);
	if (s == NULL) {
		RSAerror(ERR_R_MALLOC_FAILURE);
		return 0;
	}
	p = s;
	i2d_ASN1_OCTET_STRING(&sig, &p);
	i = RSA_private_encrypt(i, s, sigret, rsa, RSA_PKCS1_PADDING);
	if (i <= 0)
		ret = 0;
	else
		*siglen = i;

	freezero(s, (unsigned int)j + 1);
	return ret;
}

int
RSA_verify_ASN1_OCTET_STRING(int dtype, const unsigned char *m,
    unsigned int m_len, unsigned char *sigbuf, unsigned int siglen, RSA *rsa)
{
	int i, ret = 0;
	unsigned char *s;
	const unsigned char *p;
	ASN1_OCTET_STRING *sig = NULL;

	if (siglen != (unsigned int)RSA_size(rsa)) {
		RSAerror(RSA_R_WRONG_SIGNATURE_LENGTH);
		return 0;
	}

	s = malloc(siglen);
	if (s == NULL) {
		RSAerror(ERR_R_MALLOC_FAILURE);
		goto err;
	}
	i = RSA_public_decrypt((int)siglen, sigbuf, s, rsa, RSA_PKCS1_PADDING);

	if (i <= 0)
		goto err;

	p = s;
	sig = d2i_ASN1_OCTET_STRING(NULL, &p, (long)i);
	if (sig == NULL)
		goto err;

	if ((unsigned int)sig->length != m_len ||
	    memcmp(m, sig->data, m_len) != 0) {
		RSAerror(RSA_R_BAD_SIGNATURE);
	} else
		ret = 1;
err:
	ASN1_OCTET_STRING_free(sig);
	freezero(s, (unsigned int)siglen);
	return ret;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: rsa_saos.c,v 1.23 2017/05/02 03:59:45 deraadt 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			#include <string.h>
61
62			#include <openssl/bn.h>
63			#include <openssl/err.h>
64			#include <openssl/objects.h>
65			#include <openssl/rsa.h>
66			#include <openssl/x509.h>
67
68			int
69			RSA_sign_ASN1_OCTET_STRING(int type, const unsigned char *m, unsigned int m_len,
70			unsigned char sigret, unsigned int siglen, RSA *rsa)
71			{
72			ASN1_OCTET_STRING sig;
73			int i, j, ret = 1;
74			unsigned char p, s;
75
76			sig.type = V_ASN1_OCTET_STRING;
77			sig.length = m_len;
78			sig.data = (unsigned char *)m;
79
80			i = i2d_ASN1_OCTET_STRING(&sig, NULL);
81			j = RSA_size(rsa);
82			if (i > (j - RSA_PKCS1_PADDING_SIZE)) {
83			RSAerror(RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY);
84			return 0;
85			}
86			s = malloc(j + 1);
87			if (s == NULL) {
88			RSAerror(ERR_R_MALLOC_FAILURE);
89			return 0;
90			}
91			p = s;
92			i2d_ASN1_OCTET_STRING(&sig, &p);
93			i = RSA_private_encrypt(i, s, sigret, rsa, RSA_PKCS1_PADDING);
94			if (i <= 0)
95			ret = 0;
96			else
97			*siglen = i;
98
99			freezero(s, (unsigned int)j + 1);
100			return ret;
101			}
102
103			int
104			RSA_verify_ASN1_OCTET_STRING(int dtype, const unsigned char *m,
105			unsigned int m_len, unsigned char sigbuf, unsigned int siglen, RSA rsa)
106			{
107			int i, ret = 0;
108			unsigned char *s;
109			const unsigned char *p;
110			ASN1_OCTET_STRING *sig = NULL;
111
112			if (siglen != (unsigned int)RSA_size(rsa)) {
113			RSAerror(RSA_R_WRONG_SIGNATURE_LENGTH);
114			return 0;
115			}
116
117			s = malloc(siglen);
118			if (s == NULL) {
119			RSAerror(ERR_R_MALLOC_FAILURE);
120			goto err;
121			}
122			i = RSA_public_decrypt((int)siglen, sigbuf, s, rsa, RSA_PKCS1_PADDING);
123
124			if (i <= 0)
125			goto err;
126
127			p = s;
128			sig = d2i_ASN1_OCTET_STRING(NULL, &p, (long)i);
129			if (sig == NULL)
130			goto err;
131
132			if ((unsigned int)sig->length != m_len \|\|
133			memcmp(m, sig->data, m_len) != 0) {
134			RSAerror(RSA_R_BAD_SIGNATURE);
135			} else
136			ret = 1;
137			err:
138			ASN1_OCTET_STRING_free(sig);
139			freezero(s, (unsigned int)siglen);
140			return ret;
141			}