Kev Mann / mbed-dev-OS5_10_4

RTC auf true

features/mbedtls/src/x509_create.c@0:38ceb79fef03, 2018-11-28 (annotated)

Committer:
kevman
Date:
Wed Nov 28 15:10:15 2018 +0000
Revision:
0:38ceb79fef03
RTC modified

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kevman 0:38ceb79fef03 1 /*
kevman 0:38ceb79fef03 2 * X.509 base functions for creating certificates / CSRs
kevman 0:38ceb79fef03 3 *
kevman 0:38ceb79fef03 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
kevman 0:38ceb79fef03 5 * SPDX-License-Identifier: Apache-2.0
kevman 0:38ceb79fef03 6 *
kevman 0:38ceb79fef03 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
kevman 0:38ceb79fef03 8 * not use this file except in compliance with the License.
kevman 0:38ceb79fef03 9 * You may obtain a copy of the License at
kevman 0:38ceb79fef03 10 *
kevman 0:38ceb79fef03 11 * http://www.apache.org/licenses/LICENSE-2.0
kevman 0:38ceb79fef03 12 *
kevman 0:38ceb79fef03 13 * Unless required by applicable law or agreed to in writing, software
kevman 0:38ceb79fef03 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
kevman 0:38ceb79fef03 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kevman 0:38ceb79fef03 16 * See the License for the specific language governing permissions and
kevman 0:38ceb79fef03 17 * limitations under the License.
kevman 0:38ceb79fef03 18 *
kevman 0:38ceb79fef03 19 * This file is part of mbed TLS (https://tls.mbed.org)
kevman 0:38ceb79fef03 20 */
kevman 0:38ceb79fef03 21
kevman 0:38ceb79fef03 22 #if !defined(MBEDTLS_CONFIG_FILE)
kevman 0:38ceb79fef03 23 #include "mbedtls/config.h"
kevman 0:38ceb79fef03 24 #else
kevman 0:38ceb79fef03 25 #include MBEDTLS_CONFIG_FILE
kevman 0:38ceb79fef03 26 #endif
kevman 0:38ceb79fef03 27
kevman 0:38ceb79fef03 28 #if defined(MBEDTLS_X509_CREATE_C)
kevman 0:38ceb79fef03 29
kevman 0:38ceb79fef03 30 #include "mbedtls/x509.h"
kevman 0:38ceb79fef03 31 #include "mbedtls/asn1write.h"
kevman 0:38ceb79fef03 32 #include "mbedtls/oid.h"
kevman 0:38ceb79fef03 33
kevman 0:38ceb79fef03 34 #include <string.h>
kevman 0:38ceb79fef03 35
kevman 0:38ceb79fef03 36 typedef struct {
kevman 0:38ceb79fef03 37 const char *name;
kevman 0:38ceb79fef03 38 size_t name_len;
kevman 0:38ceb79fef03 39 const char*oid;
kevman 0:38ceb79fef03 40 } x509_attr_descriptor_t;
kevman 0:38ceb79fef03 41
kevman 0:38ceb79fef03 42 #define ADD_STRLEN( s ) s, sizeof( s ) - 1
kevman 0:38ceb79fef03 43
kevman 0:38ceb79fef03 44 static const x509_attr_descriptor_t x509_attrs[] =
kevman 0:38ceb79fef03 45 {
kevman 0:38ceb79fef03 46 { ADD_STRLEN( "CN" ), MBEDTLS_OID_AT_CN },
kevman 0:38ceb79fef03 47 { ADD_STRLEN( "commonName" ), MBEDTLS_OID_AT_CN },
kevman 0:38ceb79fef03 48 { ADD_STRLEN( "C" ), MBEDTLS_OID_AT_COUNTRY },
kevman 0:38ceb79fef03 49 { ADD_STRLEN( "countryName" ), MBEDTLS_OID_AT_COUNTRY },
kevman 0:38ceb79fef03 50 { ADD_STRLEN( "O" ), MBEDTLS_OID_AT_ORGANIZATION },
kevman 0:38ceb79fef03 51 { ADD_STRLEN( "organizationName" ), MBEDTLS_OID_AT_ORGANIZATION },
kevman 0:38ceb79fef03 52 { ADD_STRLEN( "L" ), MBEDTLS_OID_AT_LOCALITY },
kevman 0:38ceb79fef03 53 { ADD_STRLEN( "locality" ), MBEDTLS_OID_AT_LOCALITY },
kevman 0:38ceb79fef03 54 { ADD_STRLEN( "R" ), MBEDTLS_OID_PKCS9_EMAIL },
kevman 0:38ceb79fef03 55 { ADD_STRLEN( "OU" ), MBEDTLS_OID_AT_ORG_UNIT },
kevman 0:38ceb79fef03 56 { ADD_STRLEN( "organizationalUnitName" ), MBEDTLS_OID_AT_ORG_UNIT },
kevman 0:38ceb79fef03 57 { ADD_STRLEN( "ST" ), MBEDTLS_OID_AT_STATE },
kevman 0:38ceb79fef03 58 { ADD_STRLEN( "stateOrProvinceName" ), MBEDTLS_OID_AT_STATE },
kevman 0:38ceb79fef03 59 { ADD_STRLEN( "emailAddress" ), MBEDTLS_OID_PKCS9_EMAIL },
kevman 0:38ceb79fef03 60 { ADD_STRLEN( "serialNumber" ), MBEDTLS_OID_AT_SERIAL_NUMBER },
kevman 0:38ceb79fef03 61 { ADD_STRLEN( "postalAddress" ), MBEDTLS_OID_AT_POSTAL_ADDRESS },
kevman 0:38ceb79fef03 62 { ADD_STRLEN( "postalCode" ), MBEDTLS_OID_AT_POSTAL_CODE },
kevman 0:38ceb79fef03 63 { ADD_STRLEN( "dnQualifier" ), MBEDTLS_OID_AT_DN_QUALIFIER },
kevman 0:38ceb79fef03 64 { ADD_STRLEN( "title" ), MBEDTLS_OID_AT_TITLE },
kevman 0:38ceb79fef03 65 { ADD_STRLEN( "surName" ), MBEDTLS_OID_AT_SUR_NAME },
kevman 0:38ceb79fef03 66 { ADD_STRLEN( "SN" ), MBEDTLS_OID_AT_SUR_NAME },
kevman 0:38ceb79fef03 67 { ADD_STRLEN( "givenName" ), MBEDTLS_OID_AT_GIVEN_NAME },
kevman 0:38ceb79fef03 68 { ADD_STRLEN( "GN" ), MBEDTLS_OID_AT_GIVEN_NAME },
kevman 0:38ceb79fef03 69 { ADD_STRLEN( "initials" ), MBEDTLS_OID_AT_INITIALS },
kevman 0:38ceb79fef03 70 { ADD_STRLEN( "pseudonym" ), MBEDTLS_OID_AT_PSEUDONYM },
kevman 0:38ceb79fef03 71 { ADD_STRLEN( "generationQualifier" ), MBEDTLS_OID_AT_GENERATION_QUALIFIER },
kevman 0:38ceb79fef03 72 { ADD_STRLEN( "domainComponent" ), MBEDTLS_OID_DOMAIN_COMPONENT },
kevman 0:38ceb79fef03 73 { ADD_STRLEN( "DC" ), MBEDTLS_OID_DOMAIN_COMPONENT },
kevman 0:38ceb79fef03 74 { NULL, 0, NULL }
kevman 0:38ceb79fef03 75 };
kevman 0:38ceb79fef03 76
kevman 0:38ceb79fef03 77 static const char *x509_at_oid_from_name( const char *name, size_t name_len )
kevman 0:38ceb79fef03 78 {
kevman 0:38ceb79fef03 79 const x509_attr_descriptor_t *cur;
kevman 0:38ceb79fef03 80
kevman 0:38ceb79fef03 81 for( cur = x509_attrs; cur->name != NULL; cur++ )
kevman 0:38ceb79fef03 82 if( cur->name_len == name_len &&
kevman 0:38ceb79fef03 83 strncmp( cur->name, name, name_len ) == 0 )
kevman 0:38ceb79fef03 84 break;
kevman 0:38ceb79fef03 85
kevman 0:38ceb79fef03 86 return( cur->oid );
kevman 0:38ceb79fef03 87 }
kevman 0:38ceb79fef03 88
kevman 0:38ceb79fef03 89 int mbedtls_x509_string_to_names( mbedtls_asn1_named_data **head, const char *name )
kevman 0:38ceb79fef03 90 {
kevman 0:38ceb79fef03 91 int ret = 0;
kevman 0:38ceb79fef03 92 const char *s = name, *c = s;
kevman 0:38ceb79fef03 93 const char *end = s + strlen( s );
kevman 0:38ceb79fef03 94 const char *oid = NULL;
kevman 0:38ceb79fef03 95 int in_tag = 1;
kevman 0:38ceb79fef03 96 char data[MBEDTLS_X509_MAX_DN_NAME_SIZE];
kevman 0:38ceb79fef03 97 char *d = data;
kevman 0:38ceb79fef03 98
kevman 0:38ceb79fef03 99 /* Clear existing chain if present */
kevman 0:38ceb79fef03 100 mbedtls_asn1_free_named_data_list( head );
kevman 0:38ceb79fef03 101
kevman 0:38ceb79fef03 102 while( c <= end )
kevman 0:38ceb79fef03 103 {
kevman 0:38ceb79fef03 104 if( in_tag && *c == '=' )
kevman 0:38ceb79fef03 105 {
kevman 0:38ceb79fef03 106 if( ( oid = x509_at_oid_from_name( s, c - s ) ) == NULL )
kevman 0:38ceb79fef03 107 {
kevman 0:38ceb79fef03 108 ret = MBEDTLS_ERR_X509_UNKNOWN_OID;
kevman 0:38ceb79fef03 109 goto exit;
kevman 0:38ceb79fef03 110 }
kevman 0:38ceb79fef03 111
kevman 0:38ceb79fef03 112 s = c + 1;
kevman 0:38ceb79fef03 113 in_tag = 0;
kevman 0:38ceb79fef03 114 d = data;
kevman 0:38ceb79fef03 115 }
kevman 0:38ceb79fef03 116
kevman 0:38ceb79fef03 117 if( !in_tag && *c == '\\' && c != end )
kevman 0:38ceb79fef03 118 {
kevman 0:38ceb79fef03 119 c++;
kevman 0:38ceb79fef03 120
kevman 0:38ceb79fef03 121 /* Check for valid escaped characters */
kevman 0:38ceb79fef03 122 if( c == end || *c != ',' )
kevman 0:38ceb79fef03 123 {
kevman 0:38ceb79fef03 124 ret = MBEDTLS_ERR_X509_INVALID_NAME;
kevman 0:38ceb79fef03 125 goto exit;
kevman 0:38ceb79fef03 126 }
kevman 0:38ceb79fef03 127 }
kevman 0:38ceb79fef03 128 else if( !in_tag && ( *c == ',' || c == end ) )
kevman 0:38ceb79fef03 129 {
kevman 0:38ceb79fef03 130 if( mbedtls_asn1_store_named_data( head, oid, strlen( oid ),
kevman 0:38ceb79fef03 131 (unsigned char *) data,
kevman 0:38ceb79fef03 132 d - data ) == NULL )
kevman 0:38ceb79fef03 133 {
kevman 0:38ceb79fef03 134 return( MBEDTLS_ERR_X509_ALLOC_FAILED );
kevman 0:38ceb79fef03 135 }
kevman 0:38ceb79fef03 136
kevman 0:38ceb79fef03 137 while( c < end && *(c + 1) == ' ' )
kevman 0:38ceb79fef03 138 c++;
kevman 0:38ceb79fef03 139
kevman 0:38ceb79fef03 140 s = c + 1;
kevman 0:38ceb79fef03 141 in_tag = 1;
kevman 0:38ceb79fef03 142 }
kevman 0:38ceb79fef03 143
kevman 0:38ceb79fef03 144 if( !in_tag && s != c + 1 )
kevman 0:38ceb79fef03 145 {
kevman 0:38ceb79fef03 146 *(d++) = *c;
kevman 0:38ceb79fef03 147
kevman 0:38ceb79fef03 148 if( d - data == MBEDTLS_X509_MAX_DN_NAME_SIZE )
kevman 0:38ceb79fef03 149 {
kevman 0:38ceb79fef03 150 ret = MBEDTLS_ERR_X509_INVALID_NAME;
kevman 0:38ceb79fef03 151 goto exit;
kevman 0:38ceb79fef03 152 }
kevman 0:38ceb79fef03 153 }
kevman 0:38ceb79fef03 154
kevman 0:38ceb79fef03 155 c++;
kevman 0:38ceb79fef03 156 }
kevman 0:38ceb79fef03 157
kevman 0:38ceb79fef03 158 exit:
kevman 0:38ceb79fef03 159
kevman 0:38ceb79fef03 160 return( ret );
kevman 0:38ceb79fef03 161 }
kevman 0:38ceb79fef03 162
kevman 0:38ceb79fef03 163 /* The first byte of the value in the mbedtls_asn1_named_data structure is reserved
kevman 0:38ceb79fef03 164 * to store the critical boolean for us
kevman 0:38ceb79fef03 165 */
kevman 0:38ceb79fef03 166 int mbedtls_x509_set_extension( mbedtls_asn1_named_data **head, const char *oid, size_t oid_len,
kevman 0:38ceb79fef03 167 int critical, const unsigned char *val, size_t val_len )
kevman 0:38ceb79fef03 168 {
kevman 0:38ceb79fef03 169 mbedtls_asn1_named_data *cur;
kevman 0:38ceb79fef03 170
kevman 0:38ceb79fef03 171 if( ( cur = mbedtls_asn1_store_named_data( head, oid, oid_len,
kevman 0:38ceb79fef03 172 NULL, val_len + 1 ) ) == NULL )
kevman 0:38ceb79fef03 173 {
kevman 0:38ceb79fef03 174 return( MBEDTLS_ERR_X509_ALLOC_FAILED );
kevman 0:38ceb79fef03 175 }
kevman 0:38ceb79fef03 176
kevman 0:38ceb79fef03 177 cur->val.p[0] = critical;
kevman 0:38ceb79fef03 178 memcpy( cur->val.p + 1, val, val_len );
kevman 0:38ceb79fef03 179
kevman 0:38ceb79fef03 180 return( 0 );
kevman 0:38ceb79fef03 181 }
kevman 0:38ceb79fef03 182
kevman 0:38ceb79fef03 183 /*
kevman 0:38ceb79fef03 184 * RelativeDistinguishedName ::=
kevman 0:38ceb79fef03 185 * SET OF AttributeTypeAndValue
kevman 0:38ceb79fef03 186 *
kevman 0:38ceb79fef03 187 * AttributeTypeAndValue ::= SEQUENCE {
kevman 0:38ceb79fef03 188 * type AttributeType,
kevman 0:38ceb79fef03 189 * value AttributeValue }
kevman 0:38ceb79fef03 190 *
kevman 0:38ceb79fef03 191 * AttributeType ::= OBJECT IDENTIFIER
kevman 0:38ceb79fef03 192 *
kevman 0:38ceb79fef03 193 * AttributeValue ::= ANY DEFINED BY AttributeType
kevman 0:38ceb79fef03 194 */
kevman 0:38ceb79fef03 195 static int x509_write_name( unsigned char **p, unsigned char *start,
kevman 0:38ceb79fef03 196 const char *oid, size_t oid_len,
kevman 0:38ceb79fef03 197 const unsigned char *name, size_t name_len )
kevman 0:38ceb79fef03 198 {
kevman 0:38ceb79fef03 199 int ret;
kevman 0:38ceb79fef03 200 size_t len = 0;
kevman 0:38ceb79fef03 201
kevman 0:38ceb79fef03 202 // Write PrintableString for all except MBEDTLS_OID_PKCS9_EMAIL
kevman 0:38ceb79fef03 203 //
kevman 0:38ceb79fef03 204 if( MBEDTLS_OID_SIZE( MBEDTLS_OID_PKCS9_EMAIL ) == oid_len &&
kevman 0:38ceb79fef03 205 memcmp( oid, MBEDTLS_OID_PKCS9_EMAIL, oid_len ) == 0 )
kevman 0:38ceb79fef03 206 {
kevman 0:38ceb79fef03 207 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_ia5_string( p, start,
kevman 0:38ceb79fef03 208 (const char *) name,
kevman 0:38ceb79fef03 209 name_len ) );
kevman 0:38ceb79fef03 210 }
kevman 0:38ceb79fef03 211 else
kevman 0:38ceb79fef03 212 {
kevman 0:38ceb79fef03 213 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_printable_string( p, start,
kevman 0:38ceb79fef03 214 (const char *) name,
kevman 0:38ceb79fef03 215 name_len ) );
kevman 0:38ceb79fef03 216 }
kevman 0:38ceb79fef03 217
kevman 0:38ceb79fef03 218 // Write OID
kevman 0:38ceb79fef03 219 //
kevman 0:38ceb79fef03 220 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_oid( p, start, oid, oid_len ) );
kevman 0:38ceb79fef03 221
kevman 0:38ceb79fef03 222 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) );
kevman 0:38ceb79fef03 223 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_CONSTRUCTED |
kevman 0:38ceb79fef03 224 MBEDTLS_ASN1_SEQUENCE ) );
kevman 0:38ceb79fef03 225
kevman 0:38ceb79fef03 226 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) );
kevman 0:38ceb79fef03 227 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_CONSTRUCTED |
kevman 0:38ceb79fef03 228 MBEDTLS_ASN1_SET ) );
kevman 0:38ceb79fef03 229
kevman 0:38ceb79fef03 230 return( (int) len );
kevman 0:38ceb79fef03 231 }
kevman 0:38ceb79fef03 232
kevman 0:38ceb79fef03 233 int mbedtls_x509_write_names( unsigned char **p, unsigned char *start,
kevman 0:38ceb79fef03 234 mbedtls_asn1_named_data *first )
kevman 0:38ceb79fef03 235 {
kevman 0:38ceb79fef03 236 int ret;
kevman 0:38ceb79fef03 237 size_t len = 0;
kevman 0:38ceb79fef03 238 mbedtls_asn1_named_data *cur = first;
kevman 0:38ceb79fef03 239
kevman 0:38ceb79fef03 240 while( cur != NULL )
kevman 0:38ceb79fef03 241 {
kevman 0:38ceb79fef03 242 MBEDTLS_ASN1_CHK_ADD( len, x509_write_name( p, start, (char *) cur->oid.p,
kevman 0:38ceb79fef03 243 cur->oid.len,
kevman 0:38ceb79fef03 244 cur->val.p, cur->val.len ) );
kevman 0:38ceb79fef03 245 cur = cur->next;
kevman 0:38ceb79fef03 246 }
kevman 0:38ceb79fef03 247
kevman 0:38ceb79fef03 248 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) );
kevman 0:38ceb79fef03 249 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_CONSTRUCTED |
kevman 0:38ceb79fef03 250 MBEDTLS_ASN1_SEQUENCE ) );
kevman 0:38ceb79fef03 251
kevman 0:38ceb79fef03 252 return( (int) len );
kevman 0:38ceb79fef03 253 }
kevman 0:38ceb79fef03 254
kevman 0:38ceb79fef03 255 int mbedtls_x509_write_sig( unsigned char **p, unsigned char *start,
kevman 0:38ceb79fef03 256 const char *oid, size_t oid_len,
kevman 0:38ceb79fef03 257 unsigned char *sig, size_t size )
kevman 0:38ceb79fef03 258 {
kevman 0:38ceb79fef03 259 int ret;
kevman 0:38ceb79fef03 260 size_t len = 0;
kevman 0:38ceb79fef03 261
kevman 0:38ceb79fef03 262 if( *p < start || (size_t)( *p - start ) < size )
kevman 0:38ceb79fef03 263 return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL );
kevman 0:38ceb79fef03 264
kevman 0:38ceb79fef03 265 len = size;
kevman 0:38ceb79fef03 266 (*p) -= len;
kevman 0:38ceb79fef03 267 memcpy( *p, sig, len );
kevman 0:38ceb79fef03 268
kevman 0:38ceb79fef03 269 if( *p - start < 1 )
kevman 0:38ceb79fef03 270 return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL );
kevman 0:38ceb79fef03 271
kevman 0:38ceb79fef03 272 *--(*p) = 0;
kevman 0:38ceb79fef03 273 len += 1;
kevman 0:38ceb79fef03 274
kevman 0:38ceb79fef03 275 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) );
kevman 0:38ceb79fef03 276 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_BIT_STRING ) );
kevman 0:38ceb79fef03 277
kevman 0:38ceb79fef03 278 // Write OID
kevman 0:38ceb79fef03 279 //
kevman 0:38ceb79fef03 280 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_algorithm_identifier( p, start, oid,
kevman 0:38ceb79fef03 281 oid_len, 0 ) );
kevman 0:38ceb79fef03 282
kevman 0:38ceb79fef03 283 return( (int) len );
kevman 0:38ceb79fef03 284 }
kevman 0:38ceb79fef03 285
kevman 0:38ceb79fef03 286 static int x509_write_extension( unsigned char **p, unsigned char *start,
kevman 0:38ceb79fef03 287 mbedtls_asn1_named_data *ext )
kevman 0:38ceb79fef03 288 {
kevman 0:38ceb79fef03 289 int ret;
kevman 0:38ceb79fef03 290 size_t len = 0;
kevman 0:38ceb79fef03 291
kevman 0:38ceb79fef03 292 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( p, start, ext->val.p + 1,
kevman 0:38ceb79fef03 293 ext->val.len - 1 ) );
kevman 0:38ceb79fef03 294 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, ext->val.len - 1 ) );
kevman 0:38ceb79fef03 295 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_OCTET_STRING ) );
kevman 0:38ceb79fef03 296
kevman 0:38ceb79fef03 297 if( ext->val.p[0] != 0 )
kevman 0:38ceb79fef03 298 {
kevman 0:38ceb79fef03 299 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_bool( p, start, 1 ) );
kevman 0:38ceb79fef03 300 }
kevman 0:38ceb79fef03 301
kevman 0:38ceb79fef03 302 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( p, start, ext->oid.p,
kevman 0:38ceb79fef03 303 ext->oid.len ) );
kevman 0:38ceb79fef03 304 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, ext->oid.len ) );
kevman 0:38ceb79fef03 305 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_OID ) );
kevman 0:38ceb79fef03 306
kevman 0:38ceb79fef03 307 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) );
kevman 0:38ceb79fef03 308 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_CONSTRUCTED |
kevman 0:38ceb79fef03 309 MBEDTLS_ASN1_SEQUENCE ) );
kevman 0:38ceb79fef03 310
kevman 0:38ceb79fef03 311 return( (int) len );
kevman 0:38ceb79fef03 312 }
kevman 0:38ceb79fef03 313
kevman 0:38ceb79fef03 314 /*
kevman 0:38ceb79fef03 315 * Extension ::= SEQUENCE {
kevman 0:38ceb79fef03 316 * extnID OBJECT IDENTIFIER,
kevman 0:38ceb79fef03 317 * critical BOOLEAN DEFAULT FALSE,
kevman 0:38ceb79fef03 318 * extnValue OCTET STRING
kevman 0:38ceb79fef03 319 * -- contains the DER encoding of an ASN.1 value
kevman 0:38ceb79fef03 320 * -- corresponding to the extension type identified
kevman 0:38ceb79fef03 321 * -- by extnID
kevman 0:38ceb79fef03 322 * }
kevman 0:38ceb79fef03 323 */
kevman 0:38ceb79fef03 324 int mbedtls_x509_write_extensions( unsigned char **p, unsigned char *start,
kevman 0:38ceb79fef03 325 mbedtls_asn1_named_data *first )
kevman 0:38ceb79fef03 326 {
kevman 0:38ceb79fef03 327 int ret;
kevman 0:38ceb79fef03 328 size_t len = 0;
kevman 0:38ceb79fef03 329 mbedtls_asn1_named_data *cur_ext = first;
kevman 0:38ceb79fef03 330
kevman 0:38ceb79fef03 331 while( cur_ext != NULL )
kevman 0:38ceb79fef03 332 {
kevman 0:38ceb79fef03 333 MBEDTLS_ASN1_CHK_ADD( len, x509_write_extension( p, start, cur_ext ) );
kevman 0:38ceb79fef03 334 cur_ext = cur_ext->next;
kevman 0:38ceb79fef03 335 }
kevman 0:38ceb79fef03 336
kevman 0:38ceb79fef03 337 return( (int) len );
kevman 0:38ceb79fef03 338 }
kevman 0:38ceb79fef03 339
kevman 0:38ceb79fef03 340 #endif /* MBEDTLS_X509_CREATE_C */