1656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* crypto/asn1/a_int.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/asn1.h> 62656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/bn.h> 63656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 64221304ee937bc0910948a8be1320cb8cc4eb6d36Brian CarlstromASN1_INTEGER *ASN1_INTEGER_dup(const ASN1_INTEGER *x) 65656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project{ return M_ASN1_INTEGER_dup(x);} 66656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 67221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromint ASN1_INTEGER_cmp(const ASN1_INTEGER *x, const ASN1_INTEGER *y) 68656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 69656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int neg, ret; 70656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* Compare signs */ 71656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project neg = x->type & V_ASN1_NEG; 72656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (neg != (y->type & V_ASN1_NEG)) 73656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 74656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (neg) 75656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return -1; 76656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 77656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 78656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 79656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 80656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret = ASN1_STRING_cmp(x, y); 81656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 82656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (neg) 83656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return -ret; 84656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 85656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return ret; 86656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 87656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 88656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 89656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* 90656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This converts an ASN1 INTEGER into its content encoding. 91656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The internal representation is an ASN1_STRING whose data is a big endian 92656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * representation of the value, ignoring the sign. The sign is determined by 93656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the type: V_ASN1_INTEGER for positive and V_ASN1_NEG_INTEGER for negative. 94656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 95656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Positive integers are no problem: they are almost the same as the DER 96656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * encoding, except if the first byte is >= 0x80 we need to add a zero pad. 97656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 98656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Negative integers are a bit trickier... 99656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The DER representation of negative integers is in 2s complement form. 100656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The internal form is converted by complementing each octet and finally 101656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * adding one to the result. This can be done less messily with a little trick. 102656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * If the internal form has trailing zeroes then they will become FF by the 103656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * complement and 0 by the add one (due to carry) so just copy as many trailing 104656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * zeros to the destination as there are in the source. The carry will add one 105656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * to the last none zero octet: so complement this octet and add one and finally 106656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * complement any left over until you get to the start of the string. 107656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 108656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Padding is a little trickier too. If the first bytes is > 0x80 then we pad 109656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * with 0xff. However if the first byte is 0x80 and one of the following bytes 110656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * is non-zero we pad with 0xff. The reason for this distinction is that 0x80 111656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * followed by optional zeros isn't padded. 112656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 113656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 114656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint i2c_ASN1_INTEGER(ASN1_INTEGER *a, unsigned char **pp) 115656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 116656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int pad=0,ret,i,neg; 117656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char *p,*n,pb=0; 118656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 119ff41a4bc41ae1e1391f9b05117623ff70b985983Kenny Root if (a == NULL) return(0); 120656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project neg=a->type & V_ASN1_NEG; 121656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (a->length == 0) 122656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=1; 123656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 124656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 125656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=a->length; 126656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=a->data[0]; 127656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (!neg && (i > 127)) { 128656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project pad=1; 129656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project pb=0; 130656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } else if(neg) { 131656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(i>128) { 132656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project pad=1; 133656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project pb=0xFF; 134656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } else if(i == 128) { 135656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* 136656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Special case: if any other bytes non zero we pad: 137656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * otherwise we don't. 138656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 139656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project for(i = 1; i < a->length; i++) if(a->data[i]) { 140656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project pad=1; 141656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project pb=0xFF; 142656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project break; 143656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 144656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 145656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 146656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret+=pad; 147656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 148656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (pp == NULL) return(ret); 149656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project p= *pp; 150656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 151656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (pad) *(p++)=pb; 152656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (a->length == 0) *(p++)=0; 153656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else if (!neg) memcpy(p,a->data,(unsigned int)a->length); 154656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else { 155656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* Begin at the end of the encoding */ 156656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project n=a->data + a->length - 1; 157656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project p += a->length - 1; 158656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i = a->length; 159656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* Copy zeros to destination as long as source is zero */ 160656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project while(!*n) { 161656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *(p--) = 0; 162656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project n--; 163656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i--; 164656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 165656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* Complement and increment next octet */ 166656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *(p--) = ((*(n--)) ^ 0xff) + 1; 167656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i--; 168656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* Complement any octets left */ 169656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project for(;i > 0; i--) *(p--) = *(n--) ^ 0xff; 170656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 171656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 172656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *pp+=ret; 173656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 174656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 175656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 176656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* Convert just ASN1 INTEGER content octets to ASN1_INTEGER structure */ 177656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 178656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectASN1_INTEGER *c2i_ASN1_INTEGER(ASN1_INTEGER **a, const unsigned char **pp, 179656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project long len) 180656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 181656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_INTEGER *ret=NULL; 182656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *p, *pend; 183656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char *to,*s; 184656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int i; 185656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 186656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((a == NULL) || ((*a) == NULL)) 187656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 188656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((ret=M_ASN1_INTEGER_new()) == NULL) return(NULL); 189656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->type=V_ASN1_INTEGER; 190656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 191656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 192656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=(*a); 193656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 194656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project p= *pp; 195656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project pend = p + len; 196656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 197656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* We must OPENSSL_malloc stuff, even for 0 bytes otherwise it 198656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * signifies a missing NULL parameter. */ 199656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s=(unsigned char *)OPENSSL_malloc((int)len+1); 200656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (s == NULL) 201656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 202656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=ERR_R_MALLOC_FAILURE; 203656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; 204656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 205656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project to=s; 206656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(!len) { 207656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* Strictly speaking this is an illegal INTEGER but we 208656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * tolerate it. 209656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 210656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->type=V_ASN1_INTEGER; 211656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } else if (*p & 0x80) /* a negative number */ 212656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 213656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->type=V_ASN1_NEG_INTEGER; 214656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((*p == 0xff) && (len != 1)) { 215656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project p++; 216656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project len--; 217656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 218656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i = len; 219656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project p += i - 1; 220656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project to += i - 1; 221656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project while((!*p) && i) { 222656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *(to--) = 0; 223656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i--; 224656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project p--; 225656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 226656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* Special case: if all zeros then the number will be of 227656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the form FF followed by n zero bytes: this corresponds to 228656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 1 followed by n zero bytes. We've already written n zeros 229656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * so we just append an extra one and set the first byte to 230656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * a 1. This is treated separately because it is the only case 231656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * where the number of bytes is larger than len. 232656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 233656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(!i) { 234656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *s = 1; 235656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s[len] = 0; 236656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project len++; 237656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } else { 238656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *(to--) = (*(p--) ^ 0xff) + 1; 239656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i--; 240656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project for(;i > 0; i--) *(to--) = *(p--) ^ 0xff; 241656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 242656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } else { 243656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->type=V_ASN1_INTEGER; 244656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((*p == 0) && (len != 1)) 245656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 246656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project p++; 247656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project len--; 248656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 249656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project memcpy(s,p,(int)len); 250656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 251656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 252656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ret->data != NULL) OPENSSL_free(ret->data); 253656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->data=s; 254656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->length=(int)len; 255656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (a != NULL) (*a)=ret; 256656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *pp=pend; 257656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 258656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projecterr: 259656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1err(ASN1_F_C2I_ASN1_INTEGER,i); 260656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((ret != NULL) && ((a == NULL) || (*a != ret))) 261656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project M_ASN1_INTEGER_free(ret); 262656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(NULL); 263656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 264656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 265656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 266656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* This is a version of d2i_ASN1_INTEGER that ignores the sign bit of 267656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ASN1 integers: some broken software can encode a positive INTEGER 268656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * with its MSB set as negative (it doesn't add a padding zero). 269656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 270656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 271656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectASN1_INTEGER *d2i_ASN1_UINTEGER(ASN1_INTEGER **a, const unsigned char **pp, 272656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project long length) 273656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 274656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_INTEGER *ret=NULL; 275656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *p; 27643c12e3d4f9bbbbd4a8ba7b149686437514bc6b6Brian Carlstrom unsigned char *s; 277656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project long len; 278656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int inf,tag,xclass; 279656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int i; 280656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 281656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((a == NULL) || ((*a) == NULL)) 282656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 283656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((ret=M_ASN1_INTEGER_new()) == NULL) return(NULL); 284656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->type=V_ASN1_INTEGER; 285656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 286656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 287656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=(*a); 288656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 289656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project p= *pp; 290656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project inf=ASN1_get_object(&p,&len,&tag,&xclass,length); 291656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (inf & 0x80) 292656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 293656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=ASN1_R_BAD_OBJECT_HEADER; 294656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; 295656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 296656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 297656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (tag != V_ASN1_INTEGER) 298656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 299656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=ASN1_R_EXPECTING_AN_INTEGER; 300656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; 301656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 302656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 303656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* We must OPENSSL_malloc stuff, even for 0 bytes otherwise it 304656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * signifies a missing NULL parameter. */ 305656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s=(unsigned char *)OPENSSL_malloc((int)len+1); 306656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (s == NULL) 307656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 308656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=ERR_R_MALLOC_FAILURE; 309656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; 310656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 311656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->type=V_ASN1_INTEGER; 312656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(len) { 313656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((*p == 0) && (len != 1)) 314656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 315656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project p++; 316656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project len--; 317656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 318656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project memcpy(s,p,(int)len); 319656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project p+=len; 320656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 321656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 322656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ret->data != NULL) OPENSSL_free(ret->data); 323656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->data=s; 324656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->length=(int)len; 325656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (a != NULL) (*a)=ret; 326656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *pp=p; 327656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 328656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projecterr: 329656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1err(ASN1_F_D2I_ASN1_UINTEGER,i); 330656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((ret != NULL) && ((a == NULL) || (*a != ret))) 331656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project M_ASN1_INTEGER_free(ret); 332656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(NULL); 333656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 334656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 335656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint ASN1_INTEGER_set(ASN1_INTEGER *a, long v) 336656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 337656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int j,k; 338656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int i; 339656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char buf[sizeof(long)+1]; 340656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project long d; 341656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 342656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project a->type=V_ASN1_INTEGER; 343656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (a->length < (int)(sizeof(long)+1)) 344656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 345656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (a->data != NULL) 346656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_free(a->data); 347656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((a->data=(unsigned char *)OPENSSL_malloc(sizeof(long)+1)) != NULL) 348656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project memset((char *)a->data,0,sizeof(long)+1); 349656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 350656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (a->data == NULL) 351656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 352656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1err(ASN1_F_ASN1_INTEGER_SET,ERR_R_MALLOC_FAILURE); 353656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(0); 354656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 355656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project d=v; 356656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (d < 0) 357656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 358656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project d= -d; 359656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project a->type=V_ASN1_NEG_INTEGER; 360656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 361656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 362656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project for (i=0; i<sizeof(long); i++) 363656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 364656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (d == 0) break; 365656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project buf[i]=(int)d&0xff; 366656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project d>>=8; 367656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 368656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project j=0; 369656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project for (k=i-1; k >=0; k--) 370656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project a->data[j++]=buf[k]; 371656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project a->length=j; 372656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(1); 373656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 374656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 375221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromlong ASN1_INTEGER_get(const ASN1_INTEGER *a) 376656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 377656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int neg=0,i; 378656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project long r=0; 379656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 380656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (a == NULL) return(0L); 381656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=a->type; 382656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (i == V_ASN1_NEG_INTEGER) 383656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project neg=1; 384656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else if (i != V_ASN1_INTEGER) 385656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return -1; 386656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 387656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (a->length > (int)sizeof(long)) 388656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 3897d3d122363e2a85d516db314892f3d6112cb1377Brian Carlstrom /* hmm... a bit ugly, return all ones */ 3907d3d122363e2a85d516db314892f3d6112cb1377Brian Carlstrom return -1; 391656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 392656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (a->data == NULL) 393656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 0; 394656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 395656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project for (i=0; i<a->length; i++) 396656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 397656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project r<<=8; 398656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project r|=(unsigned char)a->data[i]; 399656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 400656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (neg) r= -r; 401656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(r); 402656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 403656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 404221304ee937bc0910948a8be1320cb8cc4eb6d36Brian CarlstromASN1_INTEGER *BN_to_ASN1_INTEGER(const BIGNUM *bn, ASN1_INTEGER *ai) 405656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 406656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_INTEGER *ret; 407656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int len,j; 408656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 409656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ai == NULL) 410656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=M_ASN1_INTEGER_new(); 411656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 412656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=ai; 413656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ret == NULL) 414656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 415656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1err(ASN1_F_BN_TO_ASN1_INTEGER,ERR_R_NESTED_ASN1_ERROR); 416656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; 417656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 418656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (BN_is_negative(bn)) 419656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->type = V_ASN1_NEG_INTEGER; 420656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else ret->type=V_ASN1_INTEGER; 421656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project j=BN_num_bits(bn); 422656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project len=((j == 0)?0:((j/8)+1)); 423656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ret->length < len+4) 424656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 425656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char *new_data=OPENSSL_realloc(ret->data, len+4); 426656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (!new_data) 427656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 428656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1err(ASN1_F_BN_TO_ASN1_INTEGER,ERR_R_MALLOC_FAILURE); 429656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; 430656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 431656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->data=new_data; 432656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 433656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->length=BN_bn2bin(bn,ret->data); 434656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* Correct zero case */ 435656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(!ret->length) 436656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 437656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->data[0] = 0; 438656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->length = 1; 439656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 440656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 441656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projecterr: 442656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ret != ai) M_ASN1_INTEGER_free(ret); 443656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(NULL); 444656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 445656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 446221304ee937bc0910948a8be1320cb8cc4eb6d36Brian CarlstromBIGNUM *ASN1_INTEGER_to_BN(const ASN1_INTEGER *ai, BIGNUM *bn) 447656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 448656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project BIGNUM *ret; 449656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 450656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((ret=BN_bin2bn(ai->data,ai->length,bn)) == NULL) 451656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1err(ASN1_F_ASN1_INTEGER_TO_BN,ASN1_R_BN_LIB); 452656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else if(ai->type == V_ASN1_NEG_INTEGER) 453656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project BN_set_negative(ret, 1); 454656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 455656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 456656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 457656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectIMPLEMENT_STACK_OF(ASN1_INTEGER) 458656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectIMPLEMENT_ASN1_SET_OF(ASN1_INTEGER) 459