Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/rsa/rsa_x931.c	Lines:	0	44	0.0 %
Date:	2017-11-13	Branches:	0	34	0.0 %


/* $OpenBSD: rsa_x931.c,v 1.10 2017/01/29 17:49:23 beck Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
 * project 2005.
 */
/* ====================================================================
 * Copyright (c) 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
 *    licensing@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 <stdio.h>
#include <string.h>

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

int
RSA_padding_add_X931(unsigned char *to, int tlen, const unsigned char *from,
    int flen)
{
	int j;
	unsigned char *p;

	/*
	 * Absolute minimum amount of padding is 1 header nibble, 1 padding
	 * nibble and 2 trailer bytes: but 1 hash if is already in 'from'.
	 */
	j = tlen - flen - 2;

	if (j < 0) {
		RSAerror(RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
		return -1;
	}

	p = (unsigned char *)to;

	/* If no padding start and end nibbles are in one byte */
	if (j == 0)
		*p++ = 0x6A;
	else {
		*p++ = 0x6B;
		if (j > 1) {
			memset(p, 0xBB, j - 1);
			p += j - 1;
		}
		*p++ = 0xBA;
	}
	memcpy(p, from, flen);
	p += flen;
	*p = 0xCC;
	return 1;
}

int
RSA_padding_check_X931(unsigned char *to, int tlen, const unsigned char *from,
    int flen, int num)
{
	int i = 0, j;
	const unsigned char *p = from;

	if (num != flen || (*p != 0x6A && *p != 0x6B)) {
		RSAerror(RSA_R_INVALID_HEADER);
		return -1;
	}

	if (*p++ == 0x6B) {
		j = flen - 3;
		for (i = 0; i < j; i++) {
			unsigned char c = *p++;
			if (c == 0xBA)
				break;
			if (c != 0xBB) {
				RSAerror(RSA_R_INVALID_PADDING);
				return -1;
			}
		}

		if (i == 0) {
			RSAerror(RSA_R_INVALID_PADDING);
			return -1;
		}

		j -= i;
	} else
		j = flen - 2;

	if (j < 0 || p[j] != 0xCC) {
		RSAerror(RSA_R_INVALID_TRAILER);
		return -1;
	}

	memcpy(to, p, j);

	return j;
}

/* Translate between X931 hash ids and NIDs */

int
RSA_X931_hash_id(int nid)
{
	switch (nid) {
	case NID_sha1:
		return 0x33;
	case NID_sha256:
		return 0x34;
	case NID_sha384:
		return 0x36;
	case NID_sha512:
		return 0x35;
	}

	return -1;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: rsa_x931.c,v 1.10 2017/01/29 17:49:23 beck Exp $ */
2			/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3			* project 2005.
4			*/
5			/* ====================================================================
6			* Copyright (c) 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			* licensing@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			#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
67			int
68			RSA_padding_add_X931(unsigned char to, int tlen, const unsigned char from,
69			int flen)
70			{
71			int j;
72			unsigned char *p;
73
74			/*
75			* Absolute minimum amount of padding is 1 header nibble, 1 padding
76			* nibble and 2 trailer bytes: but 1 hash if is already in 'from'.
77			*/
78			j = tlen - flen - 2;
79
80			if (j < 0) {
81			RSAerror(RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
82			return -1;
83			}
84
85			p = (unsigned char *)to;
86
87			/* If no padding start and end nibbles are in one byte */
88			if (j == 0)
89			*p++ = 0x6A;
90			else {
91			*p++ = 0x6B;
92			if (j > 1) {
93			memset(p, 0xBB, j - 1);
94			p += j - 1;
95			}
96			*p++ = 0xBA;
97			}
98			memcpy(p, from, flen);
99			p += flen;
100			*p = 0xCC;
101			return 1;
102			}
103
104			int
105			RSA_padding_check_X931(unsigned char to, int tlen, const unsigned char from,
106			int flen, int num)
107			{
108			int i = 0, j;
109			const unsigned char *p = from;
110
111			if (num != flen \|\| (p != 0x6A && p != 0x6B)) {
112			RSAerror(RSA_R_INVALID_HEADER);
113			return -1;
114			}
115
116			if (*p++ == 0x6B) {
117			j = flen - 3;
118			for (i = 0; i < j; i++) {
119			unsigned char c = *p++;
120			if (c == 0xBA)
121			break;
122			if (c != 0xBB) {
123			RSAerror(RSA_R_INVALID_PADDING);
124			return -1;
125			}
126			}
127
128			if (i == 0) {
129			RSAerror(RSA_R_INVALID_PADDING);
130			return -1;
131			}
132
133			j -= i;
134			} else
135			j = flen - 2;
136
137			if (j < 0 \|\| p[j] != 0xCC) {
138			RSAerror(RSA_R_INVALID_TRAILER);
139			return -1;
140			}
141
142			memcpy(to, p, j);
143
144			return j;
145			}
146
147			/* Translate between X931 hash ids and NIDs */
148
149			int
150			RSA_X931_hash_id(int nid)
151			{
152			switch (nid) {
153			case NID_sha1:
154			return 0x33;
155			case NID_sha256:
156			return 0x34;
157			case NID_sha384:
158			return 0x36;
159			case NID_sha512:
160			return 0x35;
161			}
162
163			return -1;
164			}