1/*
2 * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
3 *
4 * The contents of this file constitute Original Code as defined in and are
5 * subject to the Apple Public Source License Version 1.2 (the 'License').
6 * You may not use this file except in compliance with the License. Please obtain
7 * a copy of the License at http://www.apple.com/publicsource and read it before
8 * using this file.
9 *
10 * This Original Code and all software distributed under the License are
11 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
12 * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
13 * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
14 * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
15 * specific language governing rights and limitations under the License.
16 */
17
18
19/* crypto/rsa/rsa_saos.c */
20/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
21 * All rights reserved.
22 *
23 * This package is an SSL implementation written
24 * by Eric Young (eay@cryptsoft.com).
25 * The implementation was written so as to conform with Netscapes SSL.
26 *
27 * This library is free for commercial and non-commercial use as long as
28 * the following conditions are aheared to.  The following conditions
29 * apply to all code found in this distribution, be it the RC4, RSA,
30 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
31 * included with this distribution is covered by the same copyright terms
32 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
33 *
34 * Copyright remains Eric Young's, and as such any Copyright notices in
35 * the code are not to be removed.
36 * If this package is used in a product, Eric Young should be given attribution
37 * as the author of the parts of the library used.
38 * This can be in the form of a textual message at program startup or
39 * in documentation (online or textual) provided with the package.
40 *
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
43 * are met:
44 * 1. Redistributions of source code must retain the copyright
45 *    notice, this list of conditions and the following disclaimer.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 *    notice, this list of conditions and the following disclaimer in the
48 *    documentation and/or other materials provided with the distribution.
49 * 3. All advertising materials mentioning features or use of this software
50 *    must display the following acknowledgement:
51 *    "This product includes cryptographic software written by
52 *     Eric Young (eay@cryptsoft.com)"
53 *    The word 'cryptographic' can be left out if the rouines from the library
54 *    being used are not cryptographic related :-).
55 * 4. If you include any Windows specific code (or a derivative thereof) from
56 *    the apps directory (application code) you must include an acknowledgement:
57 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
58 *
59 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
62 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
69 * SUCH DAMAGE.
70 *
71 * The licence and distribution terms for any publically available version or
72 * derivative of this code cannot be changed.  i.e. this code cannot simply be
73 * copied and put under another distribution licence
74 * [including the GNU Public Licence.]
75 */
76
77#include <stdio.h>
78#include "cryptlib.h"
79#include <openssl/bn.h>
80#include <openssl/rsa.h>
81#include <openssl/objects.h>
82#include <openssl/x509.h>
83
84int RSA_sign_ASN1_OCTET_STRING(int type, unsigned char *m, unsigned int m_len,
85	     unsigned char *sigret, unsigned int *siglen, RSA *rsa)
86	{
87	ASN1_OCTET_STRING sig;
88	int i,j,ret=1;
89	unsigned char *p,*s;
90
91	sig.type=V_ASN1_OCTET_STRING;
92	sig.length=m_len;
93	sig.data=m;
94
95	i=i2d_ASN1_OCTET_STRING(&sig,NULL);
96	j=RSA_size(rsa);
97	if ((i-RSA_PKCS1_PADDING) > j)
98		{
99		RSAerr(RSA_F_RSA_SIGN_ASN1_OCTET_STRING,RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY);
100		return(0);
101		}
102	s=(unsigned char *)Malloc((unsigned int)j+1);
103	if (s == NULL)
104		{
105		RSAerr(RSA_F_RSA_SIGN_ASN1_OCTET_STRING,ERR_R_MALLOC_FAILURE);
106		return(0);
107		}
108	p=s;
109	i2d_ASN1_OCTET_STRING(&sig,&p);
110	i=RSA_private_encrypt(i,s,sigret,rsa,RSA_PKCS1_PADDING);
111	if (i <= 0)
112		ret=0;
113	else
114		*siglen=i;
115
116	memset(s,0,(unsigned int)j+1);
117	Free(s);
118	return(ret);
119	}
120
121int RSA_verify_ASN1_OCTET_STRING(int dtype, unsigned char *m,
122	     unsigned int m_len, unsigned char *sigbuf, unsigned int siglen,
123	     RSA *rsa)
124	{
125	int i,ret=0;
126	unsigned char *p,*s;
127	ASN1_OCTET_STRING *sig=NULL;
128
129	if (siglen != (unsigned int)RSA_size(rsa))
130		{
131		RSAerr(RSA_F_RSA_VERIFY_ASN1_OCTET_STRING,RSA_R_WRONG_SIGNATURE_LENGTH);
132		return(0);
133		}
134
135	s=(unsigned char *)Malloc((unsigned int)siglen);
136	if (s == NULL)
137		{
138		RSAerr(RSA_F_RSA_VERIFY_ASN1_OCTET_STRING,ERR_R_MALLOC_FAILURE);
139		goto err;
140		}
141	i=RSA_public_decrypt((int)siglen,sigbuf,s,rsa,RSA_PKCS1_PADDING);
142
143	if (i <= 0) goto err;
144
145	p=s;
146	sig=d2i_ASN1_OCTET_STRING(NULL,&p,(long)i);
147	if (sig == NULL) goto err;
148
149	if (	((unsigned int)sig->length != m_len) ||
150		(memcmp(m,sig->data,m_len) != 0))
151		{
152		RSAerr(RSA_F_RSA_VERIFY_ASN1_OCTET_STRING,RSA_R_BAD_SIGNATURE);
153		}
154	else
155		ret=1;
156err:
157	if (sig != NULL) M_ASN1_OCTET_STRING_free(sig);
158	memset(s,0,(unsigned int)siglen);
159	Free(s);
160	return(ret);
161	}
162
163