1c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org/* crypto/asn1/a_enum.c */ 2c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * All rights reserved. 4c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 5c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * This package is an SSL implementation written 6c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * by Eric Young (eay@cryptsoft.com). 7c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * The implementation was written so as to conform with Netscapes SSL. 8c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 9c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * This library is free for commercial and non-commercial use as long as 10c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * the following conditions are aheared to. The following conditions 11c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * apply to all code found in this distribution, be it the RC4, RSA, 12c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * included with this distribution is covered by the same copyright terms 14c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 16c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * Copyright remains Eric Young's, and as such any Copyright notices in 17c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * the code are not to be removed. 18c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * If this package is used in a product, Eric Young should be given attribution 19c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * as the author of the parts of the library used. 20c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * This can be in the form of a textual message at program startup or 21c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * in documentation (online or textual) provided with the package. 22c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 23c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * Redistribution and use in source and binary forms, with or without 24c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * modification, are permitted provided that the following conditions 25c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * are met: 26c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 1. Redistributions of source code must retain the copyright 27c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * notice, this list of conditions and the following disclaimer. 28c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 2. Redistributions in binary form must reproduce the above copyright 29c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * notice, this list of conditions and the following disclaimer in the 30c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * documentation and/or other materials provided with the distribution. 31c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 3. All advertising materials mentioning features or use of this software 32c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * must display the following acknowledgement: 33c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * "This product includes cryptographic software written by 34c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * Eric Young (eay@cryptsoft.com)" 35c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * The word 'cryptographic' can be left out if the rouines from the library 36c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * being used are not cryptographic related :-). 37c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 4. If you include any Windows specific code (or a derivative thereof) from 38c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * the apps directory (application code) you must include an acknowledgement: 39c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 41c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * SUCH DAMAGE. 52c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 53c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * The licence and distribution terms for any publically available version or 54c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * derivative of this code cannot be changed. i.e. this code cannot simply be 55c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * copied and put under another distribution licence 56c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * [including the GNU Public Licence.] 57c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org */ 58c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 59c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org#include <stdio.h> 60c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org#include "cryptlib.h" 61c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org#include <openssl/asn1.h> 62c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org#include <openssl/bn.h> 63c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 64c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org/* 65c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * Code for ENUMERATED type: identical to INTEGER apart from a different tag. 66c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * for comments on encoding see a_int.c 67c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org */ 68c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 69c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgint ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v) 70c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 71c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org int j,k; 72c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org unsigned int i; 73c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org unsigned char buf[sizeof(long)+1]; 74c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org long d; 75c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 76c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org a->type=V_ASN1_ENUMERATED; 77c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (a->length < (int)(sizeof(long)+1)) 78c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 79c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (a->data != NULL) 80c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org OPENSSL_free(a->data); 81c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if ((a->data=(unsigned char *)OPENSSL_malloc(sizeof(long)+1)) != NULL) 82c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org memset((char *)a->data,0,sizeof(long)+1); 83c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 84c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (a->data == NULL) 85c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 86c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org ASN1err(ASN1_F_ASN1_ENUMERATED_SET,ERR_R_MALLOC_FAILURE); 87c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return(0); 88c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 89c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org d=v; 90c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (d < 0) 91c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 92c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org d= -d; 93c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org a->type=V_ASN1_NEG_ENUMERATED; 94c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 95c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 96c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org for (i=0; i<sizeof(long); i++) 97c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 98c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (d == 0) break; 99c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org buf[i]=(int)d&0xff; 100c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org d>>=8; 101c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 102c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org j=0; 103c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org for (k=i-1; k >=0; k--) 104c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org a->data[j++]=buf[k]; 105c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org a->length=j; 106c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return(1); 107c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 108c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 109c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orglong ASN1_ENUMERATED_get(ASN1_ENUMERATED *a) 110c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 111c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org int neg=0,i; 112c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org long r=0; 113c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 114c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (a == NULL) return(0L); 115c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org i=a->type; 116c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (i == V_ASN1_NEG_ENUMERATED) 117c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org neg=1; 118c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org else if (i != V_ASN1_ENUMERATED) 119c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return -1; 120c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 121c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (a->length > (int)sizeof(long)) 122c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 123c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org /* hmm... a bit ugly */ 124c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return(0xffffffffL); 125c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 126c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (a->data == NULL) 127c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return 0; 128c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 129c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org for (i=0; i<a->length; i++) 130c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 131c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org r<<=8; 132c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org r|=(unsigned char)a->data[i]; 133c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 134c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (neg) r= -r; 135c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return(r); 136c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 137c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 138c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgASN1_ENUMERATED *BN_to_ASN1_ENUMERATED(BIGNUM *bn, ASN1_ENUMERATED *ai) 139c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 140c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org ASN1_ENUMERATED *ret; 141c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org int len,j; 142c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 143c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (ai == NULL) 144c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org ret=M_ASN1_ENUMERATED_new(); 145c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org else 146c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org ret=ai; 147c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (ret == NULL) 148c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 149c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org ASN1err(ASN1_F_BN_TO_ASN1_ENUMERATED,ERR_R_NESTED_ASN1_ERROR); 150c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org goto err; 151c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 152c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if(BN_is_negative(bn)) ret->type = V_ASN1_NEG_ENUMERATED; 153c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org else ret->type=V_ASN1_ENUMERATED; 154c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org j=BN_num_bits(bn); 155c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org len=((j == 0)?0:((j/8)+1)); 156c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (ret->length < len+4) 157c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 158c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org unsigned char *new_data=OPENSSL_realloc(ret->data, len+4); 159c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (!new_data) 160c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 161c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org ASN1err(ASN1_F_BN_TO_ASN1_ENUMERATED,ERR_R_MALLOC_FAILURE); 162c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org goto err; 163c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 164c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org ret->data=new_data; 165c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 166c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 167c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org ret->length=BN_bn2bin(bn,ret->data); 168c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return(ret); 169c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgerr: 170c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (ret != ai) M_ASN1_ENUMERATED_free(ret); 171c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return(NULL); 172c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 173c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 174c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgBIGNUM *ASN1_ENUMERATED_to_BN(ASN1_ENUMERATED *ai, BIGNUM *bn) 175c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 176c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org BIGNUM *ret; 177c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 178c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if ((ret=BN_bin2bn(ai->data,ai->length,bn)) == NULL) 179c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org ASN1err(ASN1_F_ASN1_ENUMERATED_TO_BN,ASN1_R_BN_LIB); 180c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org else if(ai->type == V_ASN1_NEG_ENUMERATED) BN_set_negative(ret,1); 181c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return(ret); 182c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 183