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