1/* crypto/asn1/evp_asn1.c */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59#include <stdlib.h> 60#include <stdio.h> 61#include <string.h> 62#include <time.h> 63 64#if 0 65#include "cryptlib.h" 66#include <openssl/asn1.h> 67#include <openssl/asn1_mac.h> 68#else 69#include "cs-asn1.h" 70#define M_ASN1_D2I_start_sequence() \ 71 if (!asn1_GetSequence(&c,&length)) \ 72 { c.line=__LINE__; goto err; } 73 74#endif 75 76int ASN1_TYPE_set_octetstring(ASN1_TYPE *a, unsigned char *data, int len) 77 { 78 ASN1_STRING *os; 79 80 if ((os=M_ASN1_OCTET_STRING_new()) == NULL) return(0); 81 if (!M_ASN1_OCTET_STRING_set(os,data,len)) return(0); 82 ASN1_TYPE_set(a,V_ASN1_OCTET_STRING,os); 83 return(1); 84 } 85 86/* int max_len: for returned value */ 87int ASN1_TYPE_get_octetstring(ASN1_TYPE *a, unsigned char *data, 88 int max_len) 89 { 90 int ret,num; 91 unsigned char *p; 92 93 if ((a->type != V_ASN1_OCTET_STRING) || (a->value.octet_string == NULL)) 94 { 95 /* ASN1err(ASN1_F_ASN1_TYPE_GET_OCTETSTRING,ASN1_R_DATA_IS_WRONG); */ 96 return(-1); 97 } 98 p=M_ASN1_STRING_data(a->value.octet_string); 99 ret=M_ASN1_STRING_length(a->value.octet_string); 100 if (ret < max_len) 101 num=ret; 102 else 103 num=max_len; 104 memcpy(data,p,num); 105 return(ret); 106 } 107 108int ASN1_TYPE_set_int_octetstring(ASN1_TYPE *a, long num, unsigned char *data, 109 int len) 110 { 111 int n,size; 112 ASN1_OCTET_STRING os,*osp; 113 ASN1_INTEGER in; 114 unsigned char *p; 115 unsigned char buf[32]; /* when they have 256bit longs, 116 * I'll be in trouble */ 117 in.data=buf; 118 in.length=32; 119 os.data=data; 120 os.type=V_ASN1_OCTET_STRING; 121 os.length=len; 122 ASN1_INTEGER_set(&in,num); 123 n = i2d_ASN1_INTEGER(&in,NULL); 124 n+=M_i2d_ASN1_OCTET_STRING(&os,NULL); 125 126 size=ASN1_object_size(1,n,V_ASN1_SEQUENCE); 127 128 if ((osp=ASN1_STRING_new()) == NULL) return(0); 129 /* Grow the 'string' */ 130 if (!ASN1_STRING_set(osp,NULL,size)) 131 { 132 ASN1_STRING_free(osp); 133 return(0); 134 } 135 136 M_ASN1_STRING_length_set(osp, size); 137 p=M_ASN1_STRING_data(osp); 138 139 ASN1_put_object(&p,1,n,V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL); 140 i2d_ASN1_INTEGER(&in,&p); 141 M_i2d_ASN1_OCTET_STRING(&os,&p); 142 143 ASN1_TYPE_set(a,V_ASN1_SEQUENCE,osp); 144 return(1); 145 } 146 147/* we return the actual length..., num may be missing, in which 148 * case, set it to zero */ 149/* int max_len: for returned value */ 150int ASN1_TYPE_get_int_octetstring(ASN1_TYPE *a, long *num, unsigned char *data, 151 int max_len) 152 { 153 int ret= -1,n; 154 ASN1_INTEGER *ai=NULL; 155 ASN1_OCTET_STRING *os=NULL; 156 const unsigned char *p; 157 long length; 158 ASN1_const_CTX c; 159 160 if ((a->type != V_ASN1_SEQUENCE) || (a->value.sequence == NULL)) 161 { 162 goto err; 163 } 164 p=M_ASN1_STRING_data(a->value.sequence); 165 length=M_ASN1_STRING_length(a->value.sequence); 166 167 c.pp= &p; 168 c.p=p; 169 c.max=p+length; 170 c.error=ASN1_R_DATA_IS_WRONG; 171 172 M_ASN1_D2I_start_sequence(); 173 c.q=c.p; 174 if ((ai=d2i_ASN1_INTEGER(NULL,&c.p,c.slen)) == NULL) goto err; 175 c.slen-=(c.p-c.q); 176 c.q=c.p; 177 if ((os=d2i_ASN1_OCTET_STRING(NULL,&c.p,c.slen)) == NULL) goto err; 178 c.slen-=(c.p-c.q); 179 if (!M_ASN1_D2I_end_sequence()) goto err; 180 181 if (num != NULL) 182 *num=ASN1_INTEGER_get(ai); 183 184 ret=M_ASN1_STRING_length(os); 185 if (max_len > ret) 186 n=ret; 187 else 188 n=max_len; 189 190 if (data != NULL) 191 memcpy(data,M_ASN1_STRING_data(os),n); 192 /* 193 if (0) 194 { 195err: 196 ASN1err(ASN1_F_ASN1_TYPE_GET_INT_OCTETSTRING,ASN1_R_DATA_IS_WRONG); 197 } 198 */ 199err: 200 if (os != NULL) M_ASN1_OCTET_STRING_free(os); 201 if (ai != NULL) M_ASN1_INTEGER_free(ai); 202 return(ret); 203 } 204 205