1656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* crypto/rsa/rsa_saos.c */ 2656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * All rights reserved. 4656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 5656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This package is an SSL implementation written 6656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * by Eric Young (eay@cryptsoft.com). 7656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The implementation was written so as to conform with Netscapes SSL. 8656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 9656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This library is free for commercial and non-commercial use as long as 10656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the following conditions are aheared to. The following conditions 11656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * apply to all code found in this distribution, be it the RC4, RSA, 12656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * included with this distribution is covered by the same copyright terms 14656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 16656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Copyright remains Eric Young's, and as such any Copyright notices in 17656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the code are not to be removed. 18656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * If this package is used in a product, Eric Young should be given attribution 19656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * as the author of the parts of the library used. 20656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This can be in the form of a textual message at program startup or 21656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * in documentation (online or textual) provided with the package. 22656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 23656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Redistribution and use in source and binary forms, with or without 24656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * modification, are permitted provided that the following conditions 25656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * are met: 26656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 1. Redistributions of source code must retain the copyright 27656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer. 28656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 29656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer in the 30656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * documentation and/or other materials provided with the distribution. 31656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 3. All advertising materials mentioning features or use of this software 32656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * must display the following acknowledgement: 33656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes cryptographic software written by 34656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Eric Young (eay@cryptsoft.com)" 35656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The word 'cryptographic' can be left out if the rouines from the library 36656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * being used are not cryptographic related :-). 37656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 4. If you include any Windows specific code (or a derivative thereof) from 38656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the apps directory (application code) you must include an acknowledgement: 39656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 41656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * SUCH DAMAGE. 52656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 53656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The licence and distribution terms for any publically available version or 54656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * derivative of this code cannot be changed. i.e. this code cannot simply be 55656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * copied and put under another distribution licence 56656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * [including the GNU Public Licence.] 57656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 58656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 59656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <stdio.h> 60656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include "cryptlib.h" 61656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/bn.h> 62656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/rsa.h> 63656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/objects.h> 64656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/x509.h> 65656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 66656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint RSA_sign_ASN1_OCTET_STRING(int type, 67656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *m, unsigned int m_len, 68656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char *sigret, unsigned int *siglen, RSA *rsa) 69656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 70656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_OCTET_STRING sig; 71656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int i,j,ret=1; 72656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char *p,*s; 73656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 74656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project sig.type=V_ASN1_OCTET_STRING; 75656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project sig.length=m_len; 76656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project sig.data=(unsigned char *)m; 77656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 78656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=i2d_ASN1_OCTET_STRING(&sig,NULL); 79656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project j=RSA_size(rsa); 80656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (i > (j-RSA_PKCS1_PADDING_SIZE)) 81656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 82656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project RSAerr(RSA_F_RSA_SIGN_ASN1_OCTET_STRING,RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY); 83656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(0); 84656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 85656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s=(unsigned char *)OPENSSL_malloc((unsigned int)j+1); 86656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (s == NULL) 87656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 88656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project RSAerr(RSA_F_RSA_SIGN_ASN1_OCTET_STRING,ERR_R_MALLOC_FAILURE); 89656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(0); 90656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 91656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project p=s; 92656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i2d_ASN1_OCTET_STRING(&sig,&p); 93656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=RSA_private_encrypt(i,s,sigret,rsa,RSA_PKCS1_PADDING); 94656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (i <= 0) 95656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=0; 96656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 97656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *siglen=i; 98656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 99656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_cleanse(s,(unsigned int)j+1); 100656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_free(s); 101656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 102656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 103656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 104656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint RSA_verify_ASN1_OCTET_STRING(int dtype, 105656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *m, 106656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int m_len, unsigned char *sigbuf, unsigned int siglen, 107656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project RSA *rsa) 108656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 109656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int i,ret=0; 110656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char *s; 111656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *p; 112656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_OCTET_STRING *sig=NULL; 113656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 114656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (siglen != (unsigned int)RSA_size(rsa)) 115656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 116656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project RSAerr(RSA_F_RSA_VERIFY_ASN1_OCTET_STRING,RSA_R_WRONG_SIGNATURE_LENGTH); 117656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(0); 118656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 119656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 120656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s=(unsigned char *)OPENSSL_malloc((unsigned int)siglen); 121656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (s == NULL) 122656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 123656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project RSAerr(RSA_F_RSA_VERIFY_ASN1_OCTET_STRING,ERR_R_MALLOC_FAILURE); 124656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; 125656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 126656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=RSA_public_decrypt((int)siglen,sigbuf,s,rsa,RSA_PKCS1_PADDING); 127656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 128656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (i <= 0) goto err; 129656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 130656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project p=s; 131656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project sig=d2i_ASN1_OCTET_STRING(NULL,&p,(long)i); 132656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (sig == NULL) goto err; 133656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 134656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ( ((unsigned int)sig->length != m_len) || 135656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project (memcmp(m,sig->data,m_len) != 0)) 136656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 137656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project RSAerr(RSA_F_RSA_VERIFY_ASN1_OCTET_STRING,RSA_R_BAD_SIGNATURE); 138656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 139656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 140656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=1; 141656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projecterr: 142656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (sig != NULL) M_ASN1_OCTET_STRING_free(sig); 143656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (s != NULL) 144656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 145656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_cleanse(s,(unsigned int)siglen); 146656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_free(s); 147656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 148656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 149656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 150656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 151