Nathen Gallardojohnson / WNCInterface

I added functionality to get the RSSI, BER, and Cell Neighbor for reporting connection issues to M2X

Dependencies:   WncControllerK64F

mbedtls/source/x509_crt.c@16:8a4105d407d3, 2016-11-14 (annotated)

Committer:
JMF
Date:
Mon Nov 14 21:15:42 2016 +0000
Revision:
16:8a4105d407d3
Parent:
12:0071cb144c7a 
updated to ensure it builds with TLS by correcting config defaults.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JMF 12:0071cb144c7a 1 /*
JMF 12:0071cb144c7a 2 * X.509 certificate parsing and verification
JMF 12:0071cb144c7a 3 *
JMF 12:0071cb144c7a 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
JMF 12:0071cb144c7a 5 * SPDX-License-Identifier: Apache-2.0
JMF 12:0071cb144c7a 6 *
JMF 12:0071cb144c7a 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
JMF 12:0071cb144c7a 8 * not use this file except in compliance with the License.
JMF 12:0071cb144c7a 9 * You may obtain a copy of the License at
JMF 12:0071cb144c7a 10 *
JMF 12:0071cb144c7a 11 * http://www.apache.org/licenses/LICENSE-2.0
JMF 12:0071cb144c7a 12 *
JMF 12:0071cb144c7a 13 * Unless required by applicable law or agreed to in writing, software
JMF 12:0071cb144c7a 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
JMF 12:0071cb144c7a 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
JMF 12:0071cb144c7a 16 * See the License for the specific language governing permissions and
JMF 12:0071cb144c7a 17 * limitations under the License.
JMF 12:0071cb144c7a 18 *
JMF 12:0071cb144c7a 19 * This file is part of mbed TLS (https://tls.mbed.org)
JMF 12:0071cb144c7a 20 */
JMF 12:0071cb144c7a 21 /*
JMF 12:0071cb144c7a 22 * The ITU-T X.509 standard defines a certificate format for PKI.
JMF 12:0071cb144c7a 23 *
JMF 12:0071cb144c7a 24 * http://www.ietf.org/rfc/rfc5280.txt (Certificates and CRLs)
JMF 12:0071cb144c7a 25 * http://www.ietf.org/rfc/rfc3279.txt (Alg IDs for CRLs)
JMF 12:0071cb144c7a 26 * http://www.ietf.org/rfc/rfc2986.txt (CSRs, aka PKCS#10)
JMF 12:0071cb144c7a 27 *
JMF 12:0071cb144c7a 28 * http://www.itu.int/ITU-T/studygroups/com17/languages/X.680-0207.pdf
JMF 12:0071cb144c7a 29 * http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf
JMF 12:0071cb144c7a 30 */
JMF 12:0071cb144c7a 31
JMF 12:0071cb144c7a 32 #if !defined(MBEDTLS_CONFIG_FILE)
JMF 12:0071cb144c7a 33 #include "mbedtls/config.h"
JMF 12:0071cb144c7a 34 #else
JMF 12:0071cb144c7a 35 #include MBEDTLS_CONFIG_FILE
JMF 12:0071cb144c7a 36 #endif
JMF 12:0071cb144c7a 37
JMF 12:0071cb144c7a 38 #if defined(MBEDTLS_X509_CRT_PARSE_C)
JMF 12:0071cb144c7a 39
JMF 12:0071cb144c7a 40 #include "mbedtls/x509_crt.h"
JMF 12:0071cb144c7a 41 #include "mbedtls/oid.h"
JMF 12:0071cb144c7a 42
JMF 12:0071cb144c7a 43 #include <stdio.h>
JMF 12:0071cb144c7a 44 #include <string.h>
JMF 12:0071cb144c7a 45
JMF 12:0071cb144c7a 46 #if defined(MBEDTLS_PEM_PARSE_C)
JMF 12:0071cb144c7a 47 #include "mbedtls/pem.h"
JMF 12:0071cb144c7a 48 #endif
JMF 12:0071cb144c7a 49
JMF 12:0071cb144c7a 50 #if defined(MBEDTLS_PLATFORM_C)
JMF 12:0071cb144c7a 51 #include "mbedtls/platform.h"
JMF 12:0071cb144c7a 52 #else
JMF 12:0071cb144c7a 53 #include <stdlib.h>
JMF 12:0071cb144c7a 54 #define mbedtls_free free
JMF 12:0071cb144c7a 55 #define mbedtls_calloc calloc
JMF 12:0071cb144c7a 56 #define mbedtls_snprintf snprintf
JMF 12:0071cb144c7a 57 #endif
JMF 12:0071cb144c7a 58
JMF 12:0071cb144c7a 59 #if defined(MBEDTLS_THREADING_C)
JMF 12:0071cb144c7a 60 #include "mbedtls/threading.h"
JMF 12:0071cb144c7a 61 #endif
JMF 12:0071cb144c7a 62
JMF 12:0071cb144c7a 63 #if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
JMF 12:0071cb144c7a 64 #include <windows.h>
JMF 12:0071cb144c7a 65 #else
JMF 12:0071cb144c7a 66 #include <time.h>
JMF 12:0071cb144c7a 67 #endif
JMF 12:0071cb144c7a 68
JMF 12:0071cb144c7a 69 #if defined(MBEDTLS_FS_IO)
JMF 12:0071cb144c7a 70 #include <stdio.h>
JMF 12:0071cb144c7a 71 #if !defined(_WIN32) || defined(EFIX64) || defined(EFI32)
JMF 12:0071cb144c7a 72 #include <sys/types.h>
JMF 12:0071cb144c7a 73 #include <sys/stat.h>
JMF 12:0071cb144c7a 74 #include <dirent.h>
JMF 12:0071cb144c7a 75 #endif /* !_WIN32 || EFIX64 || EFI32 */
JMF 12:0071cb144c7a 76 #endif
JMF 12:0071cb144c7a 77
JMF 12:0071cb144c7a 78 /* Implementation that should never be optimized out by the compiler */
JMF 12:0071cb144c7a 79 static void mbedtls_zeroize( void *v, size_t n ) {
JMF 12:0071cb144c7a 80 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
JMF 12:0071cb144c7a 81 }
JMF 12:0071cb144c7a 82
JMF 12:0071cb144c7a 83 /*
JMF 12:0071cb144c7a 84 * Default profile
JMF 12:0071cb144c7a 85 */
JMF 12:0071cb144c7a 86 const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_default =
JMF 12:0071cb144c7a 87 {
JMF 12:0071cb144c7a 88 /* Hashes from SHA-1 and above */
JMF 12:0071cb144c7a 89 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA1 ) |
JMF 12:0071cb144c7a 90 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_RIPEMD160 ) |
JMF 12:0071cb144c7a 91 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA224 ) |
JMF 12:0071cb144c7a 92 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) |
JMF 12:0071cb144c7a 93 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ) |
JMF 12:0071cb144c7a 94 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
JMF 12:0071cb144c7a 95 0xFFFFFFF, /* Any PK alg */
JMF 12:0071cb144c7a 96 0xFFFFFFF, /* Any curve */
JMF 12:0071cb144c7a 97 2048,
JMF 12:0071cb144c7a 98 };
JMF 12:0071cb144c7a 99
JMF 12:0071cb144c7a 100 /*
JMF 12:0071cb144c7a 101 * Next-default profile
JMF 12:0071cb144c7a 102 */
JMF 12:0071cb144c7a 103 const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_next =
JMF 12:0071cb144c7a 104 {
JMF 12:0071cb144c7a 105 /* Hashes from SHA-256 and above */
JMF 12:0071cb144c7a 106 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) |
JMF 12:0071cb144c7a 107 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ) |
JMF 12:0071cb144c7a 108 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
JMF 12:0071cb144c7a 109 0xFFFFFFF, /* Any PK alg */
JMF 12:0071cb144c7a 110 #if defined(MBEDTLS_ECP_C)
JMF 12:0071cb144c7a 111 /* Curves at or above 128-bit security level */
JMF 12:0071cb144c7a 112 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256R1 ) |
JMF 12:0071cb144c7a 113 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP384R1 ) |
JMF 12:0071cb144c7a 114 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP521R1 ) |
JMF 12:0071cb144c7a 115 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP256R1 ) |
JMF 12:0071cb144c7a 116 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP384R1 ) |
JMF 12:0071cb144c7a 117 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP512R1 ) |
JMF 12:0071cb144c7a 118 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256K1 ),
JMF 12:0071cb144c7a 119 #else
JMF 12:0071cb144c7a 120 0,
JMF 12:0071cb144c7a 121 #endif
JMF 12:0071cb144c7a 122 2048,
JMF 12:0071cb144c7a 123 };
JMF 12:0071cb144c7a 124
JMF 12:0071cb144c7a 125 /*
JMF 12:0071cb144c7a 126 * NSA Suite B Profile
JMF 12:0071cb144c7a 127 */
JMF 12:0071cb144c7a 128 const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_suiteb =
JMF 12:0071cb144c7a 129 {
JMF 12:0071cb144c7a 130 /* Only SHA-256 and 384 */
JMF 12:0071cb144c7a 131 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) |
JMF 12:0071cb144c7a 132 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ),
JMF 12:0071cb144c7a 133 /* Only ECDSA */
JMF 12:0071cb144c7a 134 MBEDTLS_X509_ID_FLAG( MBEDTLS_PK_ECDSA ),
JMF 12:0071cb144c7a 135 #if defined(MBEDTLS_ECP_C)
JMF 12:0071cb144c7a 136 /* Only NIST P-256 and P-384 */
JMF 12:0071cb144c7a 137 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256R1 ) |
JMF 12:0071cb144c7a 138 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP384R1 ),
JMF 12:0071cb144c7a 139 #else
JMF 12:0071cb144c7a 140 0,
JMF 12:0071cb144c7a 141 #endif
JMF 12:0071cb144c7a 142 0,
JMF 12:0071cb144c7a 143 };
JMF 12:0071cb144c7a 144
JMF 12:0071cb144c7a 145 /*
JMF 12:0071cb144c7a 146 * Check md_alg against profile
JMF 12:0071cb144c7a 147 * Return 0 if md_alg acceptable for this profile, -1 otherwise
JMF 12:0071cb144c7a 148 */
JMF 12:0071cb144c7a 149 static int x509_profile_check_md_alg( const mbedtls_x509_crt_profile *profile,
JMF 12:0071cb144c7a 150 mbedtls_md_type_t md_alg )
JMF 12:0071cb144c7a 151 {
JMF 12:0071cb144c7a 152 if( ( profile->allowed_mds & MBEDTLS_X509_ID_FLAG( md_alg ) ) != 0 )
JMF 12:0071cb144c7a 153 return( 0 );
JMF 12:0071cb144c7a 154
JMF 12:0071cb144c7a 155 return( -1 );
JMF 12:0071cb144c7a 156 }
JMF 12:0071cb144c7a 157
JMF 12:0071cb144c7a 158 /*
JMF 12:0071cb144c7a 159 * Check pk_alg against profile
JMF 12:0071cb144c7a 160 * Return 0 if pk_alg acceptable for this profile, -1 otherwise
JMF 12:0071cb144c7a 161 */
JMF 12:0071cb144c7a 162 static int x509_profile_check_pk_alg( const mbedtls_x509_crt_profile *profile,
JMF 12:0071cb144c7a 163 mbedtls_pk_type_t pk_alg )
JMF 12:0071cb144c7a 164 {
JMF 12:0071cb144c7a 165 if( ( profile->allowed_pks & MBEDTLS_X509_ID_FLAG( pk_alg ) ) != 0 )
JMF 12:0071cb144c7a 166 return( 0 );
JMF 12:0071cb144c7a 167
JMF 12:0071cb144c7a 168 return( -1 );
JMF 12:0071cb144c7a 169 }
JMF 12:0071cb144c7a 170
JMF 12:0071cb144c7a 171 /*
JMF 12:0071cb144c7a 172 * Check key against profile
JMF 12:0071cb144c7a 173 * Return 0 if pk_alg acceptable for this profile, -1 otherwise
JMF 12:0071cb144c7a 174 */
JMF 12:0071cb144c7a 175 static int x509_profile_check_key( const mbedtls_x509_crt_profile *profile,
JMF 12:0071cb144c7a 176 mbedtls_pk_type_t pk_alg,
JMF 12:0071cb144c7a 177 const mbedtls_pk_context *pk )
JMF 12:0071cb144c7a 178 {
JMF 12:0071cb144c7a 179 #if defined(MBEDTLS_RSA_C)
JMF 12:0071cb144c7a 180 if( pk_alg == MBEDTLS_PK_RSA || pk_alg == MBEDTLS_PK_RSASSA_PSS )
JMF 12:0071cb144c7a 181 {
JMF 12:0071cb144c7a 182 if( mbedtls_pk_get_bitlen( pk ) >= profile->rsa_min_bitlen )
JMF 12:0071cb144c7a 183 return( 0 );
JMF 12:0071cb144c7a 184
JMF 12:0071cb144c7a 185 return( -1 );
JMF 12:0071cb144c7a 186 }
JMF 12:0071cb144c7a 187 #endif
JMF 12:0071cb144c7a 188
JMF 12:0071cb144c7a 189 #if defined(MBEDTLS_ECP_C)
JMF 12:0071cb144c7a 190 if( pk_alg == MBEDTLS_PK_ECDSA ||
JMF 12:0071cb144c7a 191 pk_alg == MBEDTLS_PK_ECKEY ||
JMF 12:0071cb144c7a 192 pk_alg == MBEDTLS_PK_ECKEY_DH )
JMF 12:0071cb144c7a 193 {
JMF 12:0071cb144c7a 194 mbedtls_ecp_group_id gid = mbedtls_pk_ec( *pk )->grp.id;
JMF 12:0071cb144c7a 195
JMF 12:0071cb144c7a 196 if( ( profile->allowed_curves & MBEDTLS_X509_ID_FLAG( gid ) ) != 0 )
JMF 12:0071cb144c7a 197 return( 0 );
JMF 12:0071cb144c7a 198
JMF 12:0071cb144c7a 199 return( -1 );
JMF 12:0071cb144c7a 200 }
JMF 12:0071cb144c7a 201 #endif
JMF 12:0071cb144c7a 202
JMF 12:0071cb144c7a 203 return( -1 );
JMF 12:0071cb144c7a 204 }
JMF 12:0071cb144c7a 205
JMF 12:0071cb144c7a 206 /*
JMF 12:0071cb144c7a 207 * Version ::= INTEGER { v1(0), v2(1), v3(2) }
JMF 12:0071cb144c7a 208 */
JMF 12:0071cb144c7a 209 static int x509_get_version( unsigned char **p,
JMF 12:0071cb144c7a 210 const unsigned char *end,
JMF 12:0071cb144c7a 211 int *ver )
JMF 12:0071cb144c7a 212 {
JMF 12:0071cb144c7a 213 int ret;
JMF 12:0071cb144c7a 214 size_t len;
JMF 12:0071cb144c7a 215
JMF 12:0071cb144c7a 216 if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
JMF 12:0071cb144c7a 217 MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 0 ) ) != 0 )
JMF 12:0071cb144c7a 218 {
JMF 12:0071cb144c7a 219 if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
JMF 12:0071cb144c7a 220 {
JMF 12:0071cb144c7a 221 *ver = 0;
JMF 12:0071cb144c7a 222 return( 0 );
JMF 12:0071cb144c7a 223 }
JMF 12:0071cb144c7a 224
JMF 12:0071cb144c7a 225 return( ret );
JMF 12:0071cb144c7a 226 }
JMF 12:0071cb144c7a 227
JMF 12:0071cb144c7a 228 end = *p + len;
JMF 12:0071cb144c7a 229
JMF 12:0071cb144c7a 230 if( ( ret = mbedtls_asn1_get_int( p, end, ver ) ) != 0 )
JMF 12:0071cb144c7a 231 return( MBEDTLS_ERR_X509_INVALID_VERSION + ret );
JMF 12:0071cb144c7a 232
JMF 12:0071cb144c7a 233 if( *p != end )
JMF 12:0071cb144c7a 234 return( MBEDTLS_ERR_X509_INVALID_VERSION +
JMF 12:0071cb144c7a 235 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
JMF 12:0071cb144c7a 236
JMF 12:0071cb144c7a 237 return( 0 );
JMF 12:0071cb144c7a 238 }
JMF 12:0071cb144c7a 239
JMF 12:0071cb144c7a 240 /*
JMF 12:0071cb144c7a 241 * Validity ::= SEQUENCE {
JMF 12:0071cb144c7a 242 * notBefore Time,
JMF 12:0071cb144c7a 243 * notAfter Time }
JMF 12:0071cb144c7a 244 */
JMF 12:0071cb144c7a 245 static int x509_get_dates( unsigned char **p,
JMF 12:0071cb144c7a 246 const unsigned char *end,
JMF 12:0071cb144c7a 247 mbedtls_x509_time *from,
JMF 12:0071cb144c7a 248 mbedtls_x509_time *to )
JMF 12:0071cb144c7a 249 {
JMF 12:0071cb144c7a 250 int ret;
JMF 12:0071cb144c7a 251 size_t len;
JMF 12:0071cb144c7a 252
JMF 12:0071cb144c7a 253 if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
JMF 12:0071cb144c7a 254 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
JMF 12:0071cb144c7a 255 return( MBEDTLS_ERR_X509_INVALID_DATE + ret );
JMF 12:0071cb144c7a 256
JMF 12:0071cb144c7a 257 end = *p + len;
JMF 12:0071cb144c7a 258
JMF 12:0071cb144c7a 259 if( ( ret = mbedtls_x509_get_time( p, end, from ) ) != 0 )
JMF 12:0071cb144c7a 260 return( ret );
JMF 12:0071cb144c7a 261
JMF 12:0071cb144c7a 262 if( ( ret = mbedtls_x509_get_time( p, end, to ) ) != 0 )
JMF 12:0071cb144c7a 263 return( ret );
JMF 12:0071cb144c7a 264
JMF 12:0071cb144c7a 265 if( *p != end )
JMF 12:0071cb144c7a 266 return( MBEDTLS_ERR_X509_INVALID_DATE +
JMF 12:0071cb144c7a 267 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
JMF 12:0071cb144c7a 268
JMF 12:0071cb144c7a 269 return( 0 );
JMF 12:0071cb144c7a 270 }
JMF 12:0071cb144c7a 271
JMF 12:0071cb144c7a 272 /*
JMF 12:0071cb144c7a 273 * X.509 v2/v3 unique identifier (not parsed)
JMF 12:0071cb144c7a 274 */
JMF 12:0071cb144c7a 275 static int x509_get_uid( unsigned char **p,
JMF 12:0071cb144c7a 276 const unsigned char *end,
JMF 12:0071cb144c7a 277 mbedtls_x509_buf *uid, int n )
JMF 12:0071cb144c7a 278 {
JMF 12:0071cb144c7a 279 int ret;
JMF 12:0071cb144c7a 280
JMF 12:0071cb144c7a 281 if( *p == end )
JMF 12:0071cb144c7a 282 return( 0 );
JMF 12:0071cb144c7a 283
JMF 12:0071cb144c7a 284 uid->tag = **p;
JMF 12:0071cb144c7a 285
JMF 12:0071cb144c7a 286 if( ( ret = mbedtls_asn1_get_tag( p, end, &uid->len,
JMF 12:0071cb144c7a 287 MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | n ) ) != 0 )
JMF 12:0071cb144c7a 288 {
JMF 12:0071cb144c7a 289 if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
JMF 12:0071cb144c7a 290 return( 0 );
JMF 12:0071cb144c7a 291
JMF 12:0071cb144c7a 292 return( ret );
JMF 12:0071cb144c7a 293 }
JMF 12:0071cb144c7a 294
JMF 12:0071cb144c7a 295 uid->p = *p;
JMF 12:0071cb144c7a 296 *p += uid->len;
JMF 12:0071cb144c7a 297
JMF 12:0071cb144c7a 298 return( 0 );
JMF 12:0071cb144c7a 299 }
JMF 12:0071cb144c7a 300
JMF 12:0071cb144c7a 301 static int x509_get_basic_constraints( unsigned char **p,
JMF 12:0071cb144c7a 302 const unsigned char *end,
JMF 12:0071cb144c7a 303 int *ca_istrue,
JMF 12:0071cb144c7a 304 int *max_pathlen )
JMF 12:0071cb144c7a 305 {
JMF 12:0071cb144c7a 306 int ret;
JMF 12:0071cb144c7a 307 size_t len;
JMF 12:0071cb144c7a 308
JMF 12:0071cb144c7a 309 /*
JMF 12:0071cb144c7a 310 * BasicConstraints ::= SEQUENCE {
JMF 12:0071cb144c7a 311 * cA BOOLEAN DEFAULT FALSE,
JMF 12:0071cb144c7a 312 * pathLenConstraint INTEGER (0..MAX) OPTIONAL }
JMF 12:0071cb144c7a 313 */
JMF 12:0071cb144c7a 314 *ca_istrue = 0; /* DEFAULT FALSE */
JMF 12:0071cb144c7a 315 *max_pathlen = 0; /* endless */
JMF 12:0071cb144c7a 316
JMF 12:0071cb144c7a 317 if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
JMF 12:0071cb144c7a 318 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
JMF 12:0071cb144c7a 319 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
JMF 12:0071cb144c7a 320
JMF 12:0071cb144c7a 321 if( *p == end )
JMF 12:0071cb144c7a 322 return( 0 );
JMF 12:0071cb144c7a 323
JMF 12:0071cb144c7a 324 if( ( ret = mbedtls_asn1_get_bool( p, end, ca_istrue ) ) != 0 )
JMF 12:0071cb144c7a 325 {
JMF 12:0071cb144c7a 326 if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
JMF 12:0071cb144c7a 327 ret = mbedtls_asn1_get_int( p, end, ca_istrue );
JMF 12:0071cb144c7a 328
JMF 12:0071cb144c7a 329 if( ret != 0 )
JMF 12:0071cb144c7a 330 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
JMF 12:0071cb144c7a 331
JMF 12:0071cb144c7a 332 if( *ca_istrue != 0 )
JMF 12:0071cb144c7a 333 *ca_istrue = 1;
JMF 12:0071cb144c7a 334 }
JMF 12:0071cb144c7a 335
JMF 12:0071cb144c7a 336 if( *p == end )
JMF 12:0071cb144c7a 337 return( 0 );
JMF 12:0071cb144c7a 338
JMF 12:0071cb144c7a 339 if( ( ret = mbedtls_asn1_get_int( p, end, max_pathlen ) ) != 0 )
JMF 12:0071cb144c7a 340 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
JMF 12:0071cb144c7a 341
JMF 12:0071cb144c7a 342 if( *p != end )
JMF 12:0071cb144c7a 343 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
JMF 12:0071cb144c7a 344 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
JMF 12:0071cb144c7a 345
JMF 12:0071cb144c7a 346 (*max_pathlen)++;
JMF 12:0071cb144c7a 347
JMF 12:0071cb144c7a 348 return( 0 );
JMF 12:0071cb144c7a 349 }
JMF 12:0071cb144c7a 350
JMF 12:0071cb144c7a 351 static int x509_get_ns_cert_type( unsigned char **p,
JMF 12:0071cb144c7a 352 const unsigned char *end,
JMF 12:0071cb144c7a 353 unsigned char *ns_cert_type)
JMF 12:0071cb144c7a 354 {
JMF 12:0071cb144c7a 355 int ret;
JMF 12:0071cb144c7a 356 mbedtls_x509_bitstring bs = { 0, 0, NULL };
JMF 12:0071cb144c7a 357
JMF 12:0071cb144c7a 358 if( ( ret = mbedtls_asn1_get_bitstring( p, end, &bs ) ) != 0 )
JMF 12:0071cb144c7a 359 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
JMF 12:0071cb144c7a 360
JMF 12:0071cb144c7a 361 if( bs.len != 1 )
JMF 12:0071cb144c7a 362 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
JMF 12:0071cb144c7a 363 MBEDTLS_ERR_ASN1_INVALID_LENGTH );
JMF 12:0071cb144c7a 364
JMF 12:0071cb144c7a 365 /* Get actual bitstring */
JMF 12:0071cb144c7a 366 *ns_cert_type = *bs.p;
JMF 12:0071cb144c7a 367 return( 0 );
JMF 12:0071cb144c7a 368 }
JMF 12:0071cb144c7a 369
JMF 12:0071cb144c7a 370 static int x509_get_key_usage( unsigned char **p,
JMF 12:0071cb144c7a 371 const unsigned char *end,
JMF 12:0071cb144c7a 372 unsigned int *key_usage)
JMF 12:0071cb144c7a 373 {
JMF 12:0071cb144c7a 374 int ret;
JMF 12:0071cb144c7a 375 size_t i;
JMF 12:0071cb144c7a 376 mbedtls_x509_bitstring bs = { 0, 0, NULL };
JMF 12:0071cb144c7a 377
JMF 12:0071cb144c7a 378 if( ( ret = mbedtls_asn1_get_bitstring( p, end, &bs ) ) != 0 )
JMF 12:0071cb144c7a 379 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
JMF 12:0071cb144c7a 380
JMF 12:0071cb144c7a 381 if( bs.len < 1 )
JMF 12:0071cb144c7a 382 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
JMF 12:0071cb144c7a 383 MBEDTLS_ERR_ASN1_INVALID_LENGTH );
JMF 12:0071cb144c7a 384
JMF 12:0071cb144c7a 385 /* Get actual bitstring */
JMF 12:0071cb144c7a 386 *key_usage = 0;
JMF 12:0071cb144c7a 387 for( i = 0; i < bs.len && i < sizeof( unsigned int ); i++ )
JMF 12:0071cb144c7a 388 {
JMF 12:0071cb144c7a 389 *key_usage |= (unsigned int) bs.p[i] << (8*i);
JMF 12:0071cb144c7a 390 }
JMF 12:0071cb144c7a 391
JMF 12:0071cb144c7a 392 return( 0 );
JMF 12:0071cb144c7a 393 }
JMF 12:0071cb144c7a 394
JMF 12:0071cb144c7a 395 /*
JMF 12:0071cb144c7a 396 * ExtKeyUsageSyntax ::= SEQUENCE SIZE (1..MAX) OF KeyPurposeId
JMF 12:0071cb144c7a 397 *
JMF 12:0071cb144c7a 398 * KeyPurposeId ::= OBJECT IDENTIFIER
JMF 12:0071cb144c7a 399 */
JMF 12:0071cb144c7a 400 static int x509_get_ext_key_usage( unsigned char **p,
JMF 12:0071cb144c7a 401 const unsigned char *end,
JMF 12:0071cb144c7a 402 mbedtls_x509_sequence *ext_key_usage)
JMF 12:0071cb144c7a 403 {
JMF 12:0071cb144c7a 404 int ret;
JMF 12:0071cb144c7a 405
JMF 12:0071cb144c7a 406 if( ( ret = mbedtls_asn1_get_sequence_of( p, end, ext_key_usage, MBEDTLS_ASN1_OID ) ) != 0 )
JMF 12:0071cb144c7a 407 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
JMF 12:0071cb144c7a 408
JMF 12:0071cb144c7a 409 /* Sequence length must be >= 1 */
JMF 12:0071cb144c7a 410 if( ext_key_usage->buf.p == NULL )
JMF 12:0071cb144c7a 411 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
JMF 12:0071cb144c7a 412 MBEDTLS_ERR_ASN1_INVALID_LENGTH );
JMF 12:0071cb144c7a 413
JMF 12:0071cb144c7a 414 return( 0 );
JMF 12:0071cb144c7a 415 }
JMF 12:0071cb144c7a 416
JMF 12:0071cb144c7a 417 /*
JMF 12:0071cb144c7a 418 * SubjectAltName ::= GeneralNames
JMF 12:0071cb144c7a 419 *
JMF 12:0071cb144c7a 420 * GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName
JMF 12:0071cb144c7a 421 *
JMF 12:0071cb144c7a 422 * GeneralName ::= CHOICE {
JMF 12:0071cb144c7a 423 * otherName [0] OtherName,
JMF 12:0071cb144c7a 424 * rfc822Name [1] IA5String,
JMF 12:0071cb144c7a 425 * dNSName [2] IA5String,
JMF 12:0071cb144c7a 426 * x400Address [3] ORAddress,
JMF 12:0071cb144c7a 427 * directoryName [4] Name,
JMF 12:0071cb144c7a 428 * ediPartyName [5] EDIPartyName,
JMF 12:0071cb144c7a 429 * uniformResourceIdentifier [6] IA5String,
JMF 12:0071cb144c7a 430 * iPAddress [7] OCTET STRING,
JMF 12:0071cb144c7a 431 * registeredID [8] OBJECT IDENTIFIER }
JMF 12:0071cb144c7a 432 *
JMF 12:0071cb144c7a 433 * OtherName ::= SEQUENCE {
JMF 12:0071cb144c7a 434 * type-id OBJECT IDENTIFIER,
JMF 12:0071cb144c7a 435 * value [0] EXPLICIT ANY DEFINED BY type-id }
JMF 12:0071cb144c7a 436 *
JMF 12:0071cb144c7a 437 * EDIPartyName ::= SEQUENCE {
JMF 12:0071cb144c7a 438 * nameAssigner [0] DirectoryString OPTIONAL,
JMF 12:0071cb144c7a 439 * partyName [1] DirectoryString }
JMF 12:0071cb144c7a 440 *
JMF 12:0071cb144c7a 441 * NOTE: we only parse and use dNSName at this point.
JMF 12:0071cb144c7a 442 */
JMF 12:0071cb144c7a 443 static int x509_get_subject_alt_name( unsigned char **p,
JMF 12:0071cb144c7a 444 const unsigned char *end,
JMF 12:0071cb144c7a 445 mbedtls_x509_sequence *subject_alt_name )
JMF 12:0071cb144c7a 446 {
JMF 12:0071cb144c7a 447 int ret;
JMF 12:0071cb144c7a 448 size_t len, tag_len;
JMF 12:0071cb144c7a 449 mbedtls_asn1_buf *buf;
JMF 12:0071cb144c7a 450 unsigned char tag;
JMF 12:0071cb144c7a 451 mbedtls_asn1_sequence *cur = subject_alt_name;
JMF 12:0071cb144c7a 452
JMF 12:0071cb144c7a 453 /* Get main sequence tag */
JMF 12:0071cb144c7a 454 if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
JMF 12:0071cb144c7a 455 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
JMF 12:0071cb144c7a 456 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
JMF 12:0071cb144c7a 457
JMF 12:0071cb144c7a 458 if( *p + len != end )
JMF 12:0071cb144c7a 459 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
JMF 12:0071cb144c7a 460 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
JMF 12:0071cb144c7a 461
JMF 12:0071cb144c7a 462 while( *p < end )
JMF 12:0071cb144c7a 463 {
JMF 12:0071cb144c7a 464 if( ( end - *p ) < 1 )
JMF 12:0071cb144c7a 465 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
JMF 12:0071cb144c7a 466 MBEDTLS_ERR_ASN1_OUT_OF_DATA );
JMF 12:0071cb144c7a 467
JMF 12:0071cb144c7a 468 tag = **p;
JMF 12:0071cb144c7a 469 (*p)++;
JMF 12:0071cb144c7a 470 if( ( ret = mbedtls_asn1_get_len( p, end, &tag_len ) ) != 0 )
JMF 12:0071cb144c7a 471 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
JMF 12:0071cb144c7a 472
JMF 12:0071cb144c7a 473 if( ( tag & MBEDTLS_ASN1_CONTEXT_SPECIFIC ) != MBEDTLS_ASN1_CONTEXT_SPECIFIC )
JMF 12:0071cb144c7a 474 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
JMF 12:0071cb144c7a 475 MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
JMF 12:0071cb144c7a 476
JMF 12:0071cb144c7a 477 /* Skip everything but DNS name */
JMF 12:0071cb144c7a 478 if( tag != ( MBEDTLS_ASN1_CONTEXT_SPECIFIC | 2 ) )
JMF 12:0071cb144c7a 479 {
JMF 12:0071cb144c7a 480 *p += tag_len;
JMF 12:0071cb144c7a 481 continue;
JMF 12:0071cb144c7a 482 }
JMF 12:0071cb144c7a 483
JMF 12:0071cb144c7a 484 /* Allocate and assign next pointer */
JMF 12:0071cb144c7a 485 if( cur->buf.p != NULL )
JMF 12:0071cb144c7a 486 {
JMF 12:0071cb144c7a 487 if( cur->next != NULL )
JMF 12:0071cb144c7a 488 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS );
JMF 12:0071cb144c7a 489
JMF 12:0071cb144c7a 490 cur->next = mbedtls_calloc( 1, sizeof( mbedtls_asn1_sequence ) );
JMF 12:0071cb144c7a 491
JMF 12:0071cb144c7a 492 if( cur->next == NULL )
JMF 12:0071cb144c7a 493 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
JMF 12:0071cb144c7a 494 MBEDTLS_ERR_ASN1_ALLOC_FAILED );
JMF 12:0071cb144c7a 495
JMF 12:0071cb144c7a 496 cur = cur->next;
JMF 12:0071cb144c7a 497 }
JMF 12:0071cb144c7a 498
JMF 12:0071cb144c7a 499 buf = &(cur->buf);
JMF 12:0071cb144c7a 500 buf->tag = tag;
JMF 12:0071cb144c7a 501 buf->p = *p;
JMF 12:0071cb144c7a 502 buf->len = tag_len;
JMF 12:0071cb144c7a 503 *p += buf->len;
JMF 12:0071cb144c7a 504 }
JMF 12:0071cb144c7a 505
JMF 12:0071cb144c7a 506 /* Set final sequence entry's next pointer to NULL */
JMF 12:0071cb144c7a 507 cur->next = NULL;
JMF 12:0071cb144c7a 508
JMF 12:0071cb144c7a 509 if( *p != end )
JMF 12:0071cb144c7a 510 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
JMF 12:0071cb144c7a 511 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
JMF 12:0071cb144c7a 512
JMF 12:0071cb144c7a 513 return( 0 );
JMF 12:0071cb144c7a 514 }
JMF 12:0071cb144c7a 515
JMF 12:0071cb144c7a 516 /*
JMF 12:0071cb144c7a 517 * X.509 v3 extensions
JMF 12:0071cb144c7a 518 *
JMF 12:0071cb144c7a 519 */
JMF 12:0071cb144c7a 520 static int x509_get_crt_ext( unsigned char **p,
JMF 12:0071cb144c7a 521 const unsigned char *end,
JMF 12:0071cb144c7a 522 mbedtls_x509_crt *crt )
JMF 12:0071cb144c7a 523 {
JMF 12:0071cb144c7a 524 int ret;
JMF 12:0071cb144c7a 525 size_t len;
JMF 12:0071cb144c7a 526 unsigned char *end_ext_data, *end_ext_octet;
JMF 12:0071cb144c7a 527
JMF 12:0071cb144c7a 528 if( ( ret = mbedtls_x509_get_ext( p, end, &crt->v3_ext, 3 ) ) != 0 )
JMF 12:0071cb144c7a 529 {
JMF 12:0071cb144c7a 530 if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
JMF 12:0071cb144c7a 531 return( 0 );
JMF 12:0071cb144c7a 532
JMF 12:0071cb144c7a 533 return( ret );
JMF 12:0071cb144c7a 534 }
JMF 12:0071cb144c7a 535
JMF 12:0071cb144c7a 536 while( *p < end )
JMF 12:0071cb144c7a 537 {
JMF 12:0071cb144c7a 538 /*
JMF 12:0071cb144c7a 539 * Extension ::= SEQUENCE {
JMF 12:0071cb144c7a 540 * extnID OBJECT IDENTIFIER,
JMF 12:0071cb144c7a 541 * critical BOOLEAN DEFAULT FALSE,
JMF 12:0071cb144c7a 542 * extnValue OCTET STRING }
JMF 12:0071cb144c7a 543 */
JMF 12:0071cb144c7a 544 mbedtls_x509_buf extn_oid = {0, 0, NULL};
JMF 12:0071cb144c7a 545 int is_critical = 0; /* DEFAULT FALSE */
JMF 12:0071cb144c7a 546 int ext_type = 0;
JMF 12:0071cb144c7a 547
JMF 12:0071cb144c7a 548 if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
JMF 12:0071cb144c7a 549 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
JMF 12:0071cb144c7a 550 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
JMF 12:0071cb144c7a 551
JMF 12:0071cb144c7a 552 end_ext_data = *p + len;
JMF 12:0071cb144c7a 553
JMF 12:0071cb144c7a 554 /* Get extension ID */
JMF 12:0071cb144c7a 555 extn_oid.tag = **p;
JMF 12:0071cb144c7a 556
JMF 12:0071cb144c7a 557 if( ( ret = mbedtls_asn1_get_tag( p, end, &extn_oid.len, MBEDTLS_ASN1_OID ) ) != 0 )
JMF 12:0071cb144c7a 558 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
JMF 12:0071cb144c7a 559
JMF 12:0071cb144c7a 560 extn_oid.p = *p;
JMF 12:0071cb144c7a 561 *p += extn_oid.len;
JMF 12:0071cb144c7a 562
JMF 12:0071cb144c7a 563 if( ( end - *p ) < 1 )
JMF 12:0071cb144c7a 564 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
JMF 12:0071cb144c7a 565 MBEDTLS_ERR_ASN1_OUT_OF_DATA );
JMF 12:0071cb144c7a 566
JMF 12:0071cb144c7a 567 /* Get optional critical */
JMF 12:0071cb144c7a 568 if( ( ret = mbedtls_asn1_get_bool( p, end_ext_data, &is_critical ) ) != 0 &&
JMF 12:0071cb144c7a 569 ( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ) )
JMF 12:0071cb144c7a 570 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
JMF 12:0071cb144c7a 571
JMF 12:0071cb144c7a 572 /* Data should be octet string type */
JMF 12:0071cb144c7a 573 if( ( ret = mbedtls_asn1_get_tag( p, end_ext_data, &len,
JMF 12:0071cb144c7a 574 MBEDTLS_ASN1_OCTET_STRING ) ) != 0 )
JMF 12:0071cb144c7a 575 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
JMF 12:0071cb144c7a 576
JMF 12:0071cb144c7a 577 end_ext_octet = *p + len;
JMF 12:0071cb144c7a 578
JMF 12:0071cb144c7a 579 if( end_ext_octet != end_ext_data )
JMF 12:0071cb144c7a 580 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
JMF 12:0071cb144c7a 581 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
JMF 12:0071cb144c7a 582
JMF 12:0071cb144c7a 583 /*
JMF 12:0071cb144c7a 584 * Detect supported extensions
JMF 12:0071cb144c7a 585 */
JMF 12:0071cb144c7a 586 ret = mbedtls_oid_get_x509_ext_type( &extn_oid, &ext_type );
JMF 12:0071cb144c7a 587
JMF 12:0071cb144c7a 588 if( ret != 0 )
JMF 12:0071cb144c7a 589 {
JMF 12:0071cb144c7a 590 /* No parser found, skip extension */
JMF 12:0071cb144c7a 591 *p = end_ext_octet;
JMF 12:0071cb144c7a 592
JMF 12:0071cb144c7a 593 #if !defined(MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION)
JMF 12:0071cb144c7a 594 if( is_critical )
JMF 12:0071cb144c7a 595 {
JMF 12:0071cb144c7a 596 /* Data is marked as critical: fail */
JMF 12:0071cb144c7a 597 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
JMF 12:0071cb144c7a 598 MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
JMF 12:0071cb144c7a 599 }
JMF 12:0071cb144c7a 600 #endif
JMF 12:0071cb144c7a 601 continue;
JMF 12:0071cb144c7a 602 }
JMF 12:0071cb144c7a 603
JMF 12:0071cb144c7a 604 /* Forbid repeated extensions */
JMF 12:0071cb144c7a 605 if( ( crt->ext_types & ext_type ) != 0 )
JMF 12:0071cb144c7a 606 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS );
JMF 12:0071cb144c7a 607
JMF 12:0071cb144c7a 608 crt->ext_types |= ext_type;
JMF 12:0071cb144c7a 609
JMF 12:0071cb144c7a 610 switch( ext_type )
JMF 12:0071cb144c7a 611 {
JMF 12:0071cb144c7a 612 case MBEDTLS_X509_EXT_BASIC_CONSTRAINTS:
JMF 12:0071cb144c7a 613 /* Parse basic constraints */
JMF 12:0071cb144c7a 614 if( ( ret = x509_get_basic_constraints( p, end_ext_octet,
JMF 12:0071cb144c7a 615 &crt->ca_istrue, &crt->max_pathlen ) ) != 0 )
JMF 12:0071cb144c7a 616 return( ret );
JMF 12:0071cb144c7a 617 break;
JMF 12:0071cb144c7a 618
JMF 12:0071cb144c7a 619 case MBEDTLS_X509_EXT_KEY_USAGE:
JMF 12:0071cb144c7a 620 /* Parse key usage */
JMF 12:0071cb144c7a 621 if( ( ret = x509_get_key_usage( p, end_ext_octet,
JMF 12:0071cb144c7a 622 &crt->key_usage ) ) != 0 )
JMF 12:0071cb144c7a 623 return( ret );
JMF 12:0071cb144c7a 624 break;
JMF 12:0071cb144c7a 625
JMF 12:0071cb144c7a 626 case MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE:
JMF 12:0071cb144c7a 627 /* Parse extended key usage */
JMF 12:0071cb144c7a 628 if( ( ret = x509_get_ext_key_usage( p, end_ext_octet,
JMF 12:0071cb144c7a 629 &crt->ext_key_usage ) ) != 0 )
JMF 12:0071cb144c7a 630 return( ret );
JMF 12:0071cb144c7a 631 break;
JMF 12:0071cb144c7a 632
JMF 12:0071cb144c7a 633 case MBEDTLS_X509_EXT_SUBJECT_ALT_NAME:
JMF 12:0071cb144c7a 634 /* Parse subject alt name */
JMF 12:0071cb144c7a 635 if( ( ret = x509_get_subject_alt_name( p, end_ext_octet,
JMF 12:0071cb144c7a 636 &crt->subject_alt_names ) ) != 0 )
JMF 12:0071cb144c7a 637 return( ret );
JMF 12:0071cb144c7a 638 break;
JMF 12:0071cb144c7a 639
JMF 12:0071cb144c7a 640 case MBEDTLS_X509_EXT_NS_CERT_TYPE:
JMF 12:0071cb144c7a 641 /* Parse netscape certificate type */
JMF 12:0071cb144c7a 642 if( ( ret = x509_get_ns_cert_type( p, end_ext_octet,
JMF 12:0071cb144c7a 643 &crt->ns_cert_type ) ) != 0 )
JMF 12:0071cb144c7a 644 return( ret );
JMF 12:0071cb144c7a 645 break;
JMF 12:0071cb144c7a 646
JMF 12:0071cb144c7a 647 default:
JMF 12:0071cb144c7a 648 return( MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE );
JMF 12:0071cb144c7a 649 }
JMF 12:0071cb144c7a 650 }
JMF 12:0071cb144c7a 651
JMF 12:0071cb144c7a 652 if( *p != end )
JMF 12:0071cb144c7a 653 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
JMF 12:0071cb144c7a 654 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
JMF 12:0071cb144c7a 655
JMF 12:0071cb144c7a 656 return( 0 );
JMF 12:0071cb144c7a 657 }
JMF 12:0071cb144c7a 658
JMF 12:0071cb144c7a 659 /*
JMF 12:0071cb144c7a 660 * Parse and fill a single X.509 certificate in DER format
JMF 12:0071cb144c7a 661 */
JMF 12:0071cb144c7a 662 static int x509_crt_parse_der_core( mbedtls_x509_crt *crt, const unsigned char *buf,
JMF 12:0071cb144c7a 663 size_t buflen )
JMF 12:0071cb144c7a 664 {
JMF 12:0071cb144c7a 665 int ret;
JMF 12:0071cb144c7a 666 size_t len;
JMF 12:0071cb144c7a 667 unsigned char *p, *end, *crt_end;
JMF 12:0071cb144c7a 668 mbedtls_x509_buf sig_params1, sig_params2, sig_oid2;
JMF 12:0071cb144c7a 669
JMF 12:0071cb144c7a 670 memset( &sig_params1, 0, sizeof( mbedtls_x509_buf ) );
JMF 12:0071cb144c7a 671 memset( &sig_params2, 0, sizeof( mbedtls_x509_buf ) );
JMF 12:0071cb144c7a 672 memset( &sig_oid2, 0, sizeof( mbedtls_x509_buf ) );
JMF 12:0071cb144c7a 673
JMF 12:0071cb144c7a 674 /*
JMF 12:0071cb144c7a 675 * Check for valid input
JMF 12:0071cb144c7a 676 */
JMF 12:0071cb144c7a 677 if( crt == NULL || buf == NULL )
JMF 12:0071cb144c7a 678 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 679
JMF 12:0071cb144c7a 680 // Use the original buffer until we figure out actual length
JMF 12:0071cb144c7a 681 p = (unsigned char*) buf;
JMF 12:0071cb144c7a 682 len = buflen;
JMF 12:0071cb144c7a 683 end = p + len;
JMF 12:0071cb144c7a 684
JMF 12:0071cb144c7a 685 /*
JMF 12:0071cb144c7a 686 * Certificate ::= SEQUENCE {
JMF 12:0071cb144c7a 687 * tbsCertificate TBSCertificate,
JMF 12:0071cb144c7a 688 * signatureAlgorithm AlgorithmIdentifier,
JMF 12:0071cb144c7a 689 * signatureValue BIT STRING }
JMF 12:0071cb144c7a 690 */
JMF 12:0071cb144c7a 691 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
JMF 12:0071cb144c7a 692 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
JMF 12:0071cb144c7a 693 {
JMF 12:0071cb144c7a 694 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 695 return( MBEDTLS_ERR_X509_INVALID_FORMAT );
JMF 12:0071cb144c7a 696 }
JMF 12:0071cb144c7a 697
JMF 12:0071cb144c7a 698 if( len > (size_t) ( end - p ) )
JMF 12:0071cb144c7a 699 {
JMF 12:0071cb144c7a 700 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 701 return( MBEDTLS_ERR_X509_INVALID_FORMAT +
JMF 12:0071cb144c7a 702 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
JMF 12:0071cb144c7a 703 }
JMF 12:0071cb144c7a 704 crt_end = p + len;
JMF 12:0071cb144c7a 705
JMF 12:0071cb144c7a 706 // Create and populate a new buffer for the raw field
JMF 12:0071cb144c7a 707 crt->raw.len = crt_end - buf;
JMF 12:0071cb144c7a 708 crt->raw.p = p = mbedtls_calloc( 1, crt->raw.len );
JMF 12:0071cb144c7a 709 if( p == NULL )
JMF 12:0071cb144c7a 710 return( MBEDTLS_ERR_X509_ALLOC_FAILED );
JMF 12:0071cb144c7a 711
JMF 12:0071cb144c7a 712 memcpy( p, buf, crt->raw.len );
JMF 12:0071cb144c7a 713
JMF 12:0071cb144c7a 714 // Direct pointers to the new buffer
JMF 12:0071cb144c7a 715 p += crt->raw.len - len;
JMF 12:0071cb144c7a 716 end = crt_end = p + len;
JMF 12:0071cb144c7a 717
JMF 12:0071cb144c7a 718 /*
JMF 12:0071cb144c7a 719 * TBSCertificate ::= SEQUENCE {
JMF 12:0071cb144c7a 720 */
JMF 12:0071cb144c7a 721 crt->tbs.p = p;
JMF 12:0071cb144c7a 722
JMF 12:0071cb144c7a 723 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
JMF 12:0071cb144c7a 724 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
JMF 12:0071cb144c7a 725 {
JMF 12:0071cb144c7a 726 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 727 return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
JMF 12:0071cb144c7a 728 }
JMF 12:0071cb144c7a 729
JMF 12:0071cb144c7a 730 end = p + len;
JMF 12:0071cb144c7a 731 crt->tbs.len = end - crt->tbs.p;
JMF 12:0071cb144c7a 732
JMF 12:0071cb144c7a 733 /*
JMF 12:0071cb144c7a 734 * Version ::= INTEGER { v1(0), v2(1), v3(2) }
JMF 12:0071cb144c7a 735 *
JMF 12:0071cb144c7a 736 * CertificateSerialNumber ::= INTEGER
JMF 12:0071cb144c7a 737 *
JMF 12:0071cb144c7a 738 * signature AlgorithmIdentifier
JMF 12:0071cb144c7a 739 */
JMF 12:0071cb144c7a 740 if( ( ret = x509_get_version( &p, end, &crt->version ) ) != 0 ||
JMF 12:0071cb144c7a 741 ( ret = mbedtls_x509_get_serial( &p, end, &crt->serial ) ) != 0 ||
JMF 12:0071cb144c7a 742 ( ret = mbedtls_x509_get_alg( &p, end, &crt->sig_oid,
JMF 12:0071cb144c7a 743 &sig_params1 ) ) != 0 )
JMF 12:0071cb144c7a 744 {
JMF 12:0071cb144c7a 745 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 746 return( ret );
JMF 12:0071cb144c7a 747 }
JMF 12:0071cb144c7a 748
JMF 12:0071cb144c7a 749 crt->version++;
JMF 12:0071cb144c7a 750
JMF 12:0071cb144c7a 751 if( crt->version > 3 )
JMF 12:0071cb144c7a 752 {
JMF 12:0071cb144c7a 753 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 754 return( MBEDTLS_ERR_X509_UNKNOWN_VERSION );
JMF 12:0071cb144c7a 755 }
JMF 12:0071cb144c7a 756
JMF 12:0071cb144c7a 757 if( ( ret = mbedtls_x509_get_sig_alg( &crt->sig_oid, &sig_params1,
JMF 12:0071cb144c7a 758 &crt->sig_md, &crt->sig_pk,
JMF 12:0071cb144c7a 759 &crt->sig_opts ) ) != 0 )
JMF 12:0071cb144c7a 760 {
JMF 12:0071cb144c7a 761 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 762 return( ret );
JMF 12:0071cb144c7a 763 }
JMF 12:0071cb144c7a 764
JMF 12:0071cb144c7a 765 /*
JMF 12:0071cb144c7a 766 * issuer Name
JMF 12:0071cb144c7a 767 */
JMF 12:0071cb144c7a 768 crt->issuer_raw.p = p;
JMF 12:0071cb144c7a 769
JMF 12:0071cb144c7a 770 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
JMF 12:0071cb144c7a 771 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
JMF 12:0071cb144c7a 772 {
JMF 12:0071cb144c7a 773 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 774 return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
JMF 12:0071cb144c7a 775 }
JMF 12:0071cb144c7a 776
JMF 12:0071cb144c7a 777 if( ( ret = mbedtls_x509_get_name( &p, p + len, &crt->issuer ) ) != 0 )
JMF 12:0071cb144c7a 778 {
JMF 12:0071cb144c7a 779 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 780 return( ret );
JMF 12:0071cb144c7a 781 }
JMF 12:0071cb144c7a 782
JMF 12:0071cb144c7a 783 crt->issuer_raw.len = p - crt->issuer_raw.p;
JMF 12:0071cb144c7a 784
JMF 12:0071cb144c7a 785 /*
JMF 12:0071cb144c7a 786 * Validity ::= SEQUENCE {
JMF 12:0071cb144c7a 787 * notBefore Time,
JMF 12:0071cb144c7a 788 * notAfter Time }
JMF 12:0071cb144c7a 789 *
JMF 12:0071cb144c7a 790 */
JMF 12:0071cb144c7a 791 if( ( ret = x509_get_dates( &p, end, &crt->valid_from,
JMF 12:0071cb144c7a 792 &crt->valid_to ) ) != 0 )
JMF 12:0071cb144c7a 793 {
JMF 12:0071cb144c7a 794 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 795 return( ret );
JMF 12:0071cb144c7a 796 }
JMF 12:0071cb144c7a 797
JMF 12:0071cb144c7a 798 /*
JMF 12:0071cb144c7a 799 * subject Name
JMF 12:0071cb144c7a 800 */
JMF 12:0071cb144c7a 801 crt->subject_raw.p = p;
JMF 12:0071cb144c7a 802
JMF 12:0071cb144c7a 803 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
JMF 12:0071cb144c7a 804 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
JMF 12:0071cb144c7a 805 {
JMF 12:0071cb144c7a 806 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 807 return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
JMF 12:0071cb144c7a 808 }
JMF 12:0071cb144c7a 809
JMF 12:0071cb144c7a 810 if( len && ( ret = mbedtls_x509_get_name( &p, p + len, &crt->subject ) ) != 0 )
JMF 12:0071cb144c7a 811 {
JMF 12:0071cb144c7a 812 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 813 return( ret );
JMF 12:0071cb144c7a 814 }
JMF 12:0071cb144c7a 815
JMF 12:0071cb144c7a 816 crt->subject_raw.len = p - crt->subject_raw.p;
JMF 12:0071cb144c7a 817
JMF 12:0071cb144c7a 818 /*
JMF 12:0071cb144c7a 819 * SubjectPublicKeyInfo
JMF 12:0071cb144c7a 820 */
JMF 12:0071cb144c7a 821 if( ( ret = mbedtls_pk_parse_subpubkey( &p, end, &crt->pk ) ) != 0 )
JMF 12:0071cb144c7a 822 {
JMF 12:0071cb144c7a 823 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 824 return( ret );
JMF 12:0071cb144c7a 825 }
JMF 12:0071cb144c7a 826
JMF 12:0071cb144c7a 827 /*
JMF 12:0071cb144c7a 828 * issuerUniqueID [1] IMPLICIT UniqueIdentifier OPTIONAL,
JMF 12:0071cb144c7a 829 * -- If present, version shall be v2 or v3
JMF 12:0071cb144c7a 830 * subjectUniqueID [2] IMPLICIT UniqueIdentifier OPTIONAL,
JMF 12:0071cb144c7a 831 * -- If present, version shall be v2 or v3
JMF 12:0071cb144c7a 832 * extensions [3] EXPLICIT Extensions OPTIONAL
JMF 12:0071cb144c7a 833 * -- If present, version shall be v3
JMF 12:0071cb144c7a 834 */
JMF 12:0071cb144c7a 835 if( crt->version == 2 || crt->version == 3 )
JMF 12:0071cb144c7a 836 {
JMF 12:0071cb144c7a 837 ret = x509_get_uid( &p, end, &crt->issuer_id, 1 );
JMF 12:0071cb144c7a 838 if( ret != 0 )
JMF 12:0071cb144c7a 839 {
JMF 12:0071cb144c7a 840 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 841 return( ret );
JMF 12:0071cb144c7a 842 }
JMF 12:0071cb144c7a 843 }
JMF 12:0071cb144c7a 844
JMF 12:0071cb144c7a 845 if( crt->version == 2 || crt->version == 3 )
JMF 12:0071cb144c7a 846 {
JMF 12:0071cb144c7a 847 ret = x509_get_uid( &p, end, &crt->subject_id, 2 );
JMF 12:0071cb144c7a 848 if( ret != 0 )
JMF 12:0071cb144c7a 849 {
JMF 12:0071cb144c7a 850 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 851 return( ret );
JMF 12:0071cb144c7a 852 }
JMF 12:0071cb144c7a 853 }
JMF 12:0071cb144c7a 854
JMF 12:0071cb144c7a 855 #if !defined(MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3)
JMF 12:0071cb144c7a 856 if( crt->version == 3 )
JMF 12:0071cb144c7a 857 #endif
JMF 12:0071cb144c7a 858 {
JMF 12:0071cb144c7a 859 ret = x509_get_crt_ext( &p, end, crt );
JMF 12:0071cb144c7a 860 if( ret != 0 )
JMF 12:0071cb144c7a 861 {
JMF 12:0071cb144c7a 862 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 863 return( ret );
JMF 12:0071cb144c7a 864 }
JMF 12:0071cb144c7a 865 }
JMF 12:0071cb144c7a 866
JMF 12:0071cb144c7a 867 if( p != end )
JMF 12:0071cb144c7a 868 {
JMF 12:0071cb144c7a 869 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 870 return( MBEDTLS_ERR_X509_INVALID_FORMAT +
JMF 12:0071cb144c7a 871 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
JMF 12:0071cb144c7a 872 }
JMF 12:0071cb144c7a 873
JMF 12:0071cb144c7a 874 end = crt_end;
JMF 12:0071cb144c7a 875
JMF 12:0071cb144c7a 876 /*
JMF 12:0071cb144c7a 877 * }
JMF 12:0071cb144c7a 878 * -- end of TBSCertificate
JMF 12:0071cb144c7a 879 *
JMF 12:0071cb144c7a 880 * signatureAlgorithm AlgorithmIdentifier,
JMF 12:0071cb144c7a 881 * signatureValue BIT STRING
JMF 12:0071cb144c7a 882 */
JMF 12:0071cb144c7a 883 if( ( ret = mbedtls_x509_get_alg( &p, end, &sig_oid2, &sig_params2 ) ) != 0 )
JMF 12:0071cb144c7a 884 {
JMF 12:0071cb144c7a 885 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 886 return( ret );
JMF 12:0071cb144c7a 887 }
JMF 12:0071cb144c7a 888
JMF 12:0071cb144c7a 889 if( crt->sig_oid.len != sig_oid2.len ||
JMF 12:0071cb144c7a 890 memcmp( crt->sig_oid.p, sig_oid2.p, crt->sig_oid.len ) != 0 ||
JMF 12:0071cb144c7a 891 sig_params1.len != sig_params2.len ||
JMF 12:0071cb144c7a 892 ( sig_params1.len != 0 &&
JMF 12:0071cb144c7a 893 memcmp( sig_params1.p, sig_params2.p, sig_params1.len ) != 0 ) )
JMF 12:0071cb144c7a 894 {
JMF 12:0071cb144c7a 895 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 896 return( MBEDTLS_ERR_X509_SIG_MISMATCH );
JMF 12:0071cb144c7a 897 }
JMF 12:0071cb144c7a 898
JMF 12:0071cb144c7a 899 if( ( ret = mbedtls_x509_get_sig( &p, end, &crt->sig ) ) != 0 )
JMF 12:0071cb144c7a 900 {
JMF 12:0071cb144c7a 901 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 902 return( ret );
JMF 12:0071cb144c7a 903 }
JMF 12:0071cb144c7a 904
JMF 12:0071cb144c7a 905 if( p != end )
JMF 12:0071cb144c7a 906 {
JMF 12:0071cb144c7a 907 mbedtls_x509_crt_free( crt );
JMF 12:0071cb144c7a 908 return( MBEDTLS_ERR_X509_INVALID_FORMAT +
JMF 12:0071cb144c7a 909 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
JMF 12:0071cb144c7a 910 }
JMF 12:0071cb144c7a 911
JMF 12:0071cb144c7a 912 return( 0 );
JMF 12:0071cb144c7a 913 }
JMF 12:0071cb144c7a 914
JMF 12:0071cb144c7a 915 /*
JMF 12:0071cb144c7a 916 * Parse one X.509 certificate in DER format from a buffer and add them to a
JMF 12:0071cb144c7a 917 * chained list
JMF 12:0071cb144c7a 918 */
JMF 12:0071cb144c7a 919 int mbedtls_x509_crt_parse_der( mbedtls_x509_crt *chain, const unsigned char *buf,
JMF 12:0071cb144c7a 920 size_t buflen )
JMF 12:0071cb144c7a 921 {
JMF 12:0071cb144c7a 922 int ret;
JMF 12:0071cb144c7a 923 mbedtls_x509_crt *crt = chain, *prev = NULL;
JMF 12:0071cb144c7a 924
JMF 12:0071cb144c7a 925 /*
JMF 12:0071cb144c7a 926 * Check for valid input
JMF 12:0071cb144c7a 927 */
JMF 12:0071cb144c7a 928 if( crt == NULL || buf == NULL )
JMF 12:0071cb144c7a 929 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 930
JMF 12:0071cb144c7a 931 while( crt->version != 0 && crt->next != NULL )
JMF 12:0071cb144c7a 932 {
JMF 12:0071cb144c7a 933 prev = crt;
JMF 12:0071cb144c7a 934 crt = crt->next;
JMF 12:0071cb144c7a 935 }
JMF 12:0071cb144c7a 936
JMF 12:0071cb144c7a 937 /*
JMF 12:0071cb144c7a 938 * Add new certificate on the end of the chain if needed.
JMF 12:0071cb144c7a 939 */
JMF 12:0071cb144c7a 940 if( crt->version != 0 && crt->next == NULL )
JMF 12:0071cb144c7a 941 {
JMF 12:0071cb144c7a 942 crt->next = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) );
JMF 12:0071cb144c7a 943
JMF 12:0071cb144c7a 944 if( crt->next == NULL )
JMF 12:0071cb144c7a 945 return( MBEDTLS_ERR_X509_ALLOC_FAILED );
JMF 12:0071cb144c7a 946
JMF 12:0071cb144c7a 947 prev = crt;
JMF 12:0071cb144c7a 948 mbedtls_x509_crt_init( crt->next );
JMF 12:0071cb144c7a 949 crt = crt->next;
JMF 12:0071cb144c7a 950 }
JMF 12:0071cb144c7a 951
JMF 12:0071cb144c7a 952 if( ( ret = x509_crt_parse_der_core( crt, buf, buflen ) ) != 0 )
JMF 12:0071cb144c7a 953 {
JMF 12:0071cb144c7a 954 if( prev )
JMF 12:0071cb144c7a 955 prev->next = NULL;
JMF 12:0071cb144c7a 956
JMF 12:0071cb144c7a 957 if( crt != chain )
JMF 12:0071cb144c7a 958 mbedtls_free( crt );
JMF 12:0071cb144c7a 959
JMF 12:0071cb144c7a 960 return( ret );
JMF 12:0071cb144c7a 961 }
JMF 12:0071cb144c7a 962
JMF 12:0071cb144c7a 963 return( 0 );
JMF 12:0071cb144c7a 964 }
JMF 12:0071cb144c7a 965
JMF 12:0071cb144c7a 966 /*
JMF 12:0071cb144c7a 967 * Parse one or more PEM certificates from a buffer and add them to the chained
JMF 12:0071cb144c7a 968 * list
JMF 12:0071cb144c7a 969 */
JMF 12:0071cb144c7a 970 int mbedtls_x509_crt_parse( mbedtls_x509_crt *chain, const unsigned char *buf, size_t buflen )
JMF 12:0071cb144c7a 971 {
JMF 12:0071cb144c7a 972 int success = 0, first_error = 0, total_failed = 0;
JMF 12:0071cb144c7a 973 #if defined(MBEDTLS_PEM_PARSE_C)
JMF 12:0071cb144c7a 974 int buf_format = MBEDTLS_X509_FORMAT_DER;
JMF 12:0071cb144c7a 975 #endif
JMF 12:0071cb144c7a 976
JMF 12:0071cb144c7a 977 /*
JMF 12:0071cb144c7a 978 * Check for valid input
JMF 12:0071cb144c7a 979 */
JMF 12:0071cb144c7a 980 if( chain == NULL || buf == NULL )
JMF 12:0071cb144c7a 981 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 982
JMF 12:0071cb144c7a 983 /*
JMF 12:0071cb144c7a 984 * Determine buffer content. Buffer contains either one DER certificate or
JMF 12:0071cb144c7a 985 * one or more PEM certificates.
JMF 12:0071cb144c7a 986 */
JMF 12:0071cb144c7a 987 #if defined(MBEDTLS_PEM_PARSE_C)
JMF 12:0071cb144c7a 988 if( buflen != 0 && buf[buflen - 1] == '\0' &&
JMF 12:0071cb144c7a 989 strstr( (const char *) buf, "-----BEGIN CERTIFICATE-----" ) != NULL )
JMF 12:0071cb144c7a 990 {
JMF 12:0071cb144c7a 991 buf_format = MBEDTLS_X509_FORMAT_PEM;
JMF 12:0071cb144c7a 992 }
JMF 12:0071cb144c7a 993
JMF 12:0071cb144c7a 994 if( buf_format == MBEDTLS_X509_FORMAT_DER )
JMF 12:0071cb144c7a 995 return mbedtls_x509_crt_parse_der( chain, buf, buflen );
JMF 12:0071cb144c7a 996 #else
JMF 12:0071cb144c7a 997 return mbedtls_x509_crt_parse_der( chain, buf, buflen );
JMF 12:0071cb144c7a 998 #endif
JMF 12:0071cb144c7a 999
JMF 12:0071cb144c7a 1000 #if defined(MBEDTLS_PEM_PARSE_C)
JMF 12:0071cb144c7a 1001 if( buf_format == MBEDTLS_X509_FORMAT_PEM )
JMF 12:0071cb144c7a 1002 {
JMF 12:0071cb144c7a 1003 int ret;
JMF 12:0071cb144c7a 1004 mbedtls_pem_context pem;
JMF 12:0071cb144c7a 1005
JMF 12:0071cb144c7a 1006 /* 1 rather than 0 since the terminating NULL byte is counted in */
JMF 12:0071cb144c7a 1007 while( buflen > 1 )
JMF 12:0071cb144c7a 1008 {
JMF 12:0071cb144c7a 1009 size_t use_len;
JMF 12:0071cb144c7a 1010 mbedtls_pem_init( &pem );
JMF 12:0071cb144c7a 1011
JMF 12:0071cb144c7a 1012 /* If we get there, we know the string is null-terminated */
JMF 12:0071cb144c7a 1013 ret = mbedtls_pem_read_buffer( &pem,
JMF 12:0071cb144c7a 1014 "-----BEGIN CERTIFICATE-----",
JMF 12:0071cb144c7a 1015 "-----END CERTIFICATE-----",
JMF 12:0071cb144c7a 1016 buf, NULL, 0, &use_len );
JMF 12:0071cb144c7a 1017
JMF 12:0071cb144c7a 1018 if( ret == 0 )
JMF 12:0071cb144c7a 1019 {
JMF 12:0071cb144c7a 1020 /*
JMF 12:0071cb144c7a 1021 * Was PEM encoded
JMF 12:0071cb144c7a 1022 */
JMF 12:0071cb144c7a 1023 buflen -= use_len;
JMF 12:0071cb144c7a 1024 buf += use_len;
JMF 12:0071cb144c7a 1025 }
JMF 12:0071cb144c7a 1026 else if( ret == MBEDTLS_ERR_PEM_BAD_INPUT_DATA )
JMF 12:0071cb144c7a 1027 {
JMF 12:0071cb144c7a 1028 return( ret );
JMF 12:0071cb144c7a 1029 }
JMF 12:0071cb144c7a 1030 else if( ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
JMF 12:0071cb144c7a 1031 {
JMF 12:0071cb144c7a 1032 mbedtls_pem_free( &pem );
JMF 12:0071cb144c7a 1033
JMF 12:0071cb144c7a 1034 /*
JMF 12:0071cb144c7a 1035 * PEM header and footer were found
JMF 12:0071cb144c7a 1036 */
JMF 12:0071cb144c7a 1037 buflen -= use_len;
JMF 12:0071cb144c7a 1038 buf += use_len;
JMF 12:0071cb144c7a 1039
JMF 12:0071cb144c7a 1040 if( first_error == 0 )
JMF 12:0071cb144c7a 1041 first_error = ret;
JMF 12:0071cb144c7a 1042
JMF 12:0071cb144c7a 1043 total_failed++;
JMF 12:0071cb144c7a 1044 continue;
JMF 12:0071cb144c7a 1045 }
JMF 12:0071cb144c7a 1046 else
JMF 12:0071cb144c7a 1047 break;
JMF 12:0071cb144c7a 1048
JMF 12:0071cb144c7a 1049 ret = mbedtls_x509_crt_parse_der( chain, pem.buf, pem.buflen );
JMF 12:0071cb144c7a 1050
JMF 12:0071cb144c7a 1051 mbedtls_pem_free( &pem );
JMF 12:0071cb144c7a 1052
JMF 12:0071cb144c7a 1053 if( ret != 0 )
JMF 12:0071cb144c7a 1054 {
JMF 12:0071cb144c7a 1055 /*
JMF 12:0071cb144c7a 1056 * Quit parsing on a memory error
JMF 12:0071cb144c7a 1057 */
JMF 12:0071cb144c7a 1058 if( ret == MBEDTLS_ERR_X509_ALLOC_FAILED )
JMF 12:0071cb144c7a 1059 return( ret );
JMF 12:0071cb144c7a 1060
JMF 12:0071cb144c7a 1061 if( first_error == 0 )
JMF 12:0071cb144c7a 1062 first_error = ret;
JMF 12:0071cb144c7a 1063
JMF 12:0071cb144c7a 1064 total_failed++;
JMF 12:0071cb144c7a 1065 continue;
JMF 12:0071cb144c7a 1066 }
JMF 12:0071cb144c7a 1067
JMF 12:0071cb144c7a 1068 success = 1;
JMF 12:0071cb144c7a 1069 }
JMF 12:0071cb144c7a 1070 }
JMF 12:0071cb144c7a 1071
JMF 12:0071cb144c7a 1072 if( success )
JMF 12:0071cb144c7a 1073 return( total_failed );
JMF 12:0071cb144c7a 1074 else if( first_error )
JMF 12:0071cb144c7a 1075 return( first_error );
JMF 12:0071cb144c7a 1076 else
JMF 12:0071cb144c7a 1077 return( MBEDTLS_ERR_X509_CERT_UNKNOWN_FORMAT );
JMF 12:0071cb144c7a 1078 #endif /* MBEDTLS_PEM_PARSE_C */
JMF 12:0071cb144c7a 1079 }
JMF 12:0071cb144c7a 1080
JMF 12:0071cb144c7a 1081 #if defined(MBEDTLS_FS_IO)
JMF 12:0071cb144c7a 1082 /*
JMF 12:0071cb144c7a 1083 * Load one or more certificates and add them to the chained list
JMF 12:0071cb144c7a 1084 */
JMF 12:0071cb144c7a 1085 int mbedtls_x509_crt_parse_file( mbedtls_x509_crt *chain, const char *path )
JMF 12:0071cb144c7a 1086 {
JMF 12:0071cb144c7a 1087 int ret;
JMF 12:0071cb144c7a 1088 size_t n;
JMF 12:0071cb144c7a 1089 unsigned char *buf;
JMF 12:0071cb144c7a 1090
JMF 12:0071cb144c7a 1091 if( ( ret = mbedtls_pk_load_file( path, &buf, &n ) ) != 0 )
JMF 12:0071cb144c7a 1092 return( ret );
JMF 12:0071cb144c7a 1093
JMF 12:0071cb144c7a 1094 ret = mbedtls_x509_crt_parse( chain, buf, n );
JMF 12:0071cb144c7a 1095
JMF 12:0071cb144c7a 1096 mbedtls_zeroize( buf, n );
JMF 12:0071cb144c7a 1097 mbedtls_free( buf );
JMF 12:0071cb144c7a 1098
JMF 12:0071cb144c7a 1099 return( ret );
JMF 12:0071cb144c7a 1100 }
JMF 12:0071cb144c7a 1101
JMF 12:0071cb144c7a 1102 int mbedtls_x509_crt_parse_path( mbedtls_x509_crt *chain, const char *path )
JMF 12:0071cb144c7a 1103 {
JMF 12:0071cb144c7a 1104 int ret = 0;
JMF 12:0071cb144c7a 1105 #if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
JMF 12:0071cb144c7a 1106 int w_ret;
JMF 12:0071cb144c7a 1107 WCHAR szDir[MAX_PATH];
JMF 12:0071cb144c7a 1108 char filename[MAX_PATH];
JMF 12:0071cb144c7a 1109 char *p;
JMF 12:0071cb144c7a 1110 size_t len = strlen( path );
JMF 12:0071cb144c7a 1111
JMF 12:0071cb144c7a 1112 WIN32_FIND_DATAW file_data;
JMF 12:0071cb144c7a 1113 HANDLE hFind;
JMF 12:0071cb144c7a 1114
JMF 12:0071cb144c7a 1115 if( len > MAX_PATH - 3 )
JMF 12:0071cb144c7a 1116 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 1117
JMF 12:0071cb144c7a 1118 memset( szDir, 0, sizeof(szDir) );
JMF 12:0071cb144c7a 1119 memset( filename, 0, MAX_PATH );
JMF 12:0071cb144c7a 1120 memcpy( filename, path, len );
JMF 12:0071cb144c7a 1121 filename[len++] = '\\';
JMF 12:0071cb144c7a 1122 p = filename + len;
JMF 12:0071cb144c7a 1123 filename[len++] = '*';
JMF 12:0071cb144c7a 1124
JMF 12:0071cb144c7a 1125 w_ret = MultiByteToWideChar( CP_ACP, 0, filename, len, szDir,
JMF 12:0071cb144c7a 1126 MAX_PATH - 3 );
JMF 12:0071cb144c7a 1127 if( w_ret == 0 )
JMF 12:0071cb144c7a 1128 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 1129
JMF 12:0071cb144c7a 1130 hFind = FindFirstFileW( szDir, &file_data );
JMF 12:0071cb144c7a 1131 if( hFind == INVALID_HANDLE_VALUE )
JMF 12:0071cb144c7a 1132 return( MBEDTLS_ERR_X509_FILE_IO_ERROR );
JMF 12:0071cb144c7a 1133
JMF 12:0071cb144c7a 1134 len = MAX_PATH - len;
JMF 12:0071cb144c7a 1135 do
JMF 12:0071cb144c7a 1136 {
JMF 12:0071cb144c7a 1137 memset( p, 0, len );
JMF 12:0071cb144c7a 1138
JMF 12:0071cb144c7a 1139 if( file_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
JMF 12:0071cb144c7a 1140 continue;
JMF 12:0071cb144c7a 1141
JMF 12:0071cb144c7a 1142 w_ret = WideCharToMultiByte( CP_ACP, 0, file_data.cFileName,
JMF 12:0071cb144c7a 1143 lstrlenW( file_data.cFileName ),
JMF 12:0071cb144c7a 1144 p, (int) len - 1,
JMF 12:0071cb144c7a 1145 NULL, NULL );
JMF 12:0071cb144c7a 1146 if( w_ret == 0 )
JMF 12:0071cb144c7a 1147 return( MBEDTLS_ERR_X509_FILE_IO_ERROR );
JMF 12:0071cb144c7a 1148
JMF 12:0071cb144c7a 1149 w_ret = mbedtls_x509_crt_parse_file( chain, filename );
JMF 12:0071cb144c7a 1150 if( w_ret < 0 )
JMF 12:0071cb144c7a 1151 ret++;
JMF 12:0071cb144c7a 1152 else
JMF 12:0071cb144c7a 1153 ret += w_ret;
JMF 12:0071cb144c7a 1154 }
JMF 12:0071cb144c7a 1155 while( FindNextFileW( hFind, &file_data ) != 0 );
JMF 12:0071cb144c7a 1156
JMF 12:0071cb144c7a 1157 if( GetLastError() != ERROR_NO_MORE_FILES )
JMF 12:0071cb144c7a 1158 ret = MBEDTLS_ERR_X509_FILE_IO_ERROR;
JMF 12:0071cb144c7a 1159
JMF 12:0071cb144c7a 1160 FindClose( hFind );
JMF 12:0071cb144c7a 1161 #else /* _WIN32 */
JMF 12:0071cb144c7a 1162 int t_ret;
JMF 12:0071cb144c7a 1163 struct stat sb;
JMF 12:0071cb144c7a 1164 struct dirent *entry;
JMF 12:0071cb144c7a 1165 char entry_name[255];
JMF 12:0071cb144c7a 1166 DIR *dir = opendir( path );
JMF 12:0071cb144c7a 1167
JMF 12:0071cb144c7a 1168 if( dir == NULL )
JMF 12:0071cb144c7a 1169 return( MBEDTLS_ERR_X509_FILE_IO_ERROR );
JMF 12:0071cb144c7a 1170
JMF 12:0071cb144c7a 1171 #if defined(MBEDTLS_THREADING_PTHREAD)
JMF 12:0071cb144c7a 1172 if( ( ret = mbedtls_mutex_lock( &mbedtls_threading_readdir_mutex ) ) != 0 )
JMF 12:0071cb144c7a 1173 {
JMF 12:0071cb144c7a 1174 closedir( dir );
JMF 12:0071cb144c7a 1175 return( ret );
JMF 12:0071cb144c7a 1176 }
JMF 12:0071cb144c7a 1177 #endif
JMF 12:0071cb144c7a 1178
JMF 12:0071cb144c7a 1179 while( ( entry = readdir( dir ) ) != NULL )
JMF 12:0071cb144c7a 1180 {
JMF 12:0071cb144c7a 1181 mbedtls_snprintf( entry_name, sizeof entry_name, "%s/%s", path, entry->d_name );
JMF 12:0071cb144c7a 1182
JMF 12:0071cb144c7a 1183 if( stat( entry_name, &sb ) == -1 )
JMF 12:0071cb144c7a 1184 {
JMF 12:0071cb144c7a 1185 closedir( dir );
JMF 12:0071cb144c7a 1186 ret = MBEDTLS_ERR_X509_FILE_IO_ERROR;
JMF 12:0071cb144c7a 1187 goto cleanup;
JMF 12:0071cb144c7a 1188 }
JMF 12:0071cb144c7a 1189
JMF 12:0071cb144c7a 1190 if( !S_ISREG( sb.st_mode ) )
JMF 12:0071cb144c7a 1191 continue;
JMF 12:0071cb144c7a 1192
JMF 12:0071cb144c7a 1193 // Ignore parse errors
JMF 12:0071cb144c7a 1194 //
JMF 12:0071cb144c7a 1195 t_ret = mbedtls_x509_crt_parse_file( chain, entry_name );
JMF 12:0071cb144c7a 1196 if( t_ret < 0 )
JMF 12:0071cb144c7a 1197 ret++;
JMF 12:0071cb144c7a 1198 else
JMF 12:0071cb144c7a 1199 ret += t_ret;
JMF 12:0071cb144c7a 1200 }
JMF 12:0071cb144c7a 1201 closedir( dir );
JMF 12:0071cb144c7a 1202
JMF 12:0071cb144c7a 1203 cleanup:
JMF 12:0071cb144c7a 1204 #if defined(MBEDTLS_THREADING_PTHREAD)
JMF 12:0071cb144c7a 1205 if( mbedtls_mutex_unlock( &mbedtls_threading_readdir_mutex ) != 0 )
JMF 12:0071cb144c7a 1206 ret = MBEDTLS_ERR_THREADING_MUTEX_ERROR;
JMF 12:0071cb144c7a 1207 #endif
JMF 12:0071cb144c7a 1208
JMF 12:0071cb144c7a 1209 #endif /* _WIN32 */
JMF 12:0071cb144c7a 1210
JMF 12:0071cb144c7a 1211 return( ret );
JMF 12:0071cb144c7a 1212 }
JMF 12:0071cb144c7a 1213 #endif /* MBEDTLS_FS_IO */
JMF 12:0071cb144c7a 1214
JMF 12:0071cb144c7a 1215 static int x509_info_subject_alt_name( char **buf, size_t *size,
JMF 12:0071cb144c7a 1216 const mbedtls_x509_sequence *subject_alt_name )
JMF 12:0071cb144c7a 1217 {
JMF 12:0071cb144c7a 1218 size_t i;
JMF 12:0071cb144c7a 1219 size_t n = *size;
JMF 12:0071cb144c7a 1220 char *p = *buf;
JMF 12:0071cb144c7a 1221 const mbedtls_x509_sequence *cur = subject_alt_name;
JMF 12:0071cb144c7a 1222 const char *sep = "";
JMF 12:0071cb144c7a 1223 size_t sep_len = 0;
JMF 12:0071cb144c7a 1224
JMF 12:0071cb144c7a 1225 while( cur != NULL )
JMF 12:0071cb144c7a 1226 {
JMF 12:0071cb144c7a 1227 if( cur->buf.len + sep_len >= n )
JMF 12:0071cb144c7a 1228 {
JMF 12:0071cb144c7a 1229 *p = '\0';
JMF 12:0071cb144c7a 1230 return( MBEDTLS_ERR_X509_BUFFER_TOO_SMALL );
JMF 12:0071cb144c7a 1231 }
JMF 12:0071cb144c7a 1232
JMF 12:0071cb144c7a 1233 n -= cur->buf.len + sep_len;
JMF 12:0071cb144c7a 1234 for( i = 0; i < sep_len; i++ )
JMF 12:0071cb144c7a 1235 *p++ = sep[i];
JMF 12:0071cb144c7a 1236 for( i = 0; i < cur->buf.len; i++ )
JMF 12:0071cb144c7a 1237 *p++ = cur->buf.p[i];
JMF 12:0071cb144c7a 1238
JMF 12:0071cb144c7a 1239 sep = ", ";
JMF 12:0071cb144c7a 1240 sep_len = 2;
JMF 12:0071cb144c7a 1241
JMF 12:0071cb144c7a 1242 cur = cur->next;
JMF 12:0071cb144c7a 1243 }
JMF 12:0071cb144c7a 1244
JMF 12:0071cb144c7a 1245 *p = '\0';
JMF 12:0071cb144c7a 1246
JMF 12:0071cb144c7a 1247 *size = n;
JMF 12:0071cb144c7a 1248 *buf = p;
JMF 12:0071cb144c7a 1249
JMF 12:0071cb144c7a 1250 return( 0 );
JMF 12:0071cb144c7a 1251 }
JMF 12:0071cb144c7a 1252
JMF 12:0071cb144c7a 1253 #define PRINT_ITEM(i) \
JMF 12:0071cb144c7a 1254 { \
JMF 12:0071cb144c7a 1255 ret = mbedtls_snprintf( p, n, "%s" i, sep ); \
JMF 12:0071cb144c7a 1256 MBEDTLS_X509_SAFE_SNPRINTF; \
JMF 12:0071cb144c7a 1257 sep = ", "; \
JMF 12:0071cb144c7a 1258 }
JMF 12:0071cb144c7a 1259
JMF 12:0071cb144c7a 1260 #define CERT_TYPE(type,name) \
JMF 12:0071cb144c7a 1261 if( ns_cert_type & type ) \
JMF 12:0071cb144c7a 1262 PRINT_ITEM( name );
JMF 12:0071cb144c7a 1263
JMF 12:0071cb144c7a 1264 static int x509_info_cert_type( char **buf, size_t *size,
JMF 12:0071cb144c7a 1265 unsigned char ns_cert_type )
JMF 12:0071cb144c7a 1266 {
JMF 12:0071cb144c7a 1267 int ret;
JMF 12:0071cb144c7a 1268 size_t n = *size;
JMF 12:0071cb144c7a 1269 char *p = *buf;
JMF 12:0071cb144c7a 1270 const char *sep = "";
JMF 12:0071cb144c7a 1271
JMF 12:0071cb144c7a 1272 CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_CLIENT, "SSL Client" );
JMF 12:0071cb144c7a 1273 CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_SERVER, "SSL Server" );
JMF 12:0071cb144c7a 1274 CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_EMAIL, "Email" );
JMF 12:0071cb144c7a 1275 CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING, "Object Signing" );
JMF 12:0071cb144c7a 1276 CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_RESERVED, "Reserved" );
JMF 12:0071cb144c7a 1277 CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_CA, "SSL CA" );
JMF 12:0071cb144c7a 1278 CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_EMAIL_CA, "Email CA" );
JMF 12:0071cb144c7a 1279 CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING_CA, "Object Signing CA" );
JMF 12:0071cb144c7a 1280
JMF 12:0071cb144c7a 1281 *size = n;
JMF 12:0071cb144c7a 1282 *buf = p;
JMF 12:0071cb144c7a 1283
JMF 12:0071cb144c7a 1284 return( 0 );
JMF 12:0071cb144c7a 1285 }
JMF 12:0071cb144c7a 1286
JMF 12:0071cb144c7a 1287 #define KEY_USAGE(code,name) \
JMF 12:0071cb144c7a 1288 if( key_usage & code ) \
JMF 12:0071cb144c7a 1289 PRINT_ITEM( name );
JMF 12:0071cb144c7a 1290
JMF 12:0071cb144c7a 1291 static int x509_info_key_usage( char **buf, size_t *size,
JMF 12:0071cb144c7a 1292 unsigned int key_usage )
JMF 12:0071cb144c7a 1293 {
JMF 12:0071cb144c7a 1294 int ret;
JMF 12:0071cb144c7a 1295 size_t n = *size;
JMF 12:0071cb144c7a 1296 char *p = *buf;
JMF 12:0071cb144c7a 1297 const char *sep = "";
JMF 12:0071cb144c7a 1298
JMF 12:0071cb144c7a 1299 KEY_USAGE( MBEDTLS_X509_KU_DIGITAL_SIGNATURE, "Digital Signature" );
JMF 12:0071cb144c7a 1300 KEY_USAGE( MBEDTLS_X509_KU_NON_REPUDIATION, "Non Repudiation" );
JMF 12:0071cb144c7a 1301 KEY_USAGE( MBEDTLS_X509_KU_KEY_ENCIPHERMENT, "Key Encipherment" );
JMF 12:0071cb144c7a 1302 KEY_USAGE( MBEDTLS_X509_KU_DATA_ENCIPHERMENT, "Data Encipherment" );
JMF 12:0071cb144c7a 1303 KEY_USAGE( MBEDTLS_X509_KU_KEY_AGREEMENT, "Key Agreement" );
JMF 12:0071cb144c7a 1304 KEY_USAGE( MBEDTLS_X509_KU_KEY_CERT_SIGN, "Key Cert Sign" );
JMF 12:0071cb144c7a 1305 KEY_USAGE( MBEDTLS_X509_KU_CRL_SIGN, "CRL Sign" );
JMF 12:0071cb144c7a 1306 KEY_USAGE( MBEDTLS_X509_KU_ENCIPHER_ONLY, "Encipher Only" );
JMF 12:0071cb144c7a 1307 KEY_USAGE( MBEDTLS_X509_KU_DECIPHER_ONLY, "Decipher Only" );
JMF 12:0071cb144c7a 1308
JMF 12:0071cb144c7a 1309 *size = n;
JMF 12:0071cb144c7a 1310 *buf = p;
JMF 12:0071cb144c7a 1311
JMF 12:0071cb144c7a 1312 return( 0 );
JMF 12:0071cb144c7a 1313 }
JMF 12:0071cb144c7a 1314
JMF 12:0071cb144c7a 1315 static int x509_info_ext_key_usage( char **buf, size_t *size,
JMF 12:0071cb144c7a 1316 const mbedtls_x509_sequence *extended_key_usage )
JMF 12:0071cb144c7a 1317 {
JMF 12:0071cb144c7a 1318 int ret;
JMF 12:0071cb144c7a 1319 const char *desc;
JMF 12:0071cb144c7a 1320 size_t n = *size;
JMF 12:0071cb144c7a 1321 char *p = *buf;
JMF 12:0071cb144c7a 1322 const mbedtls_x509_sequence *cur = extended_key_usage;
JMF 12:0071cb144c7a 1323 const char *sep = "";
JMF 12:0071cb144c7a 1324
JMF 12:0071cb144c7a 1325 while( cur != NULL )
JMF 12:0071cb144c7a 1326 {
JMF 12:0071cb144c7a 1327 if( mbedtls_oid_get_extended_key_usage( &cur->buf, &desc ) != 0 )
JMF 12:0071cb144c7a 1328 desc = "???";
JMF 12:0071cb144c7a 1329
JMF 12:0071cb144c7a 1330 ret = mbedtls_snprintf( p, n, "%s%s", sep, desc );
JMF 12:0071cb144c7a 1331 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1332
JMF 12:0071cb144c7a 1333 sep = ", ";
JMF 12:0071cb144c7a 1334
JMF 12:0071cb144c7a 1335 cur = cur->next;
JMF 12:0071cb144c7a 1336 }
JMF 12:0071cb144c7a 1337
JMF 12:0071cb144c7a 1338 *size = n;
JMF 12:0071cb144c7a 1339 *buf = p;
JMF 12:0071cb144c7a 1340
JMF 12:0071cb144c7a 1341 return( 0 );
JMF 12:0071cb144c7a 1342 }
JMF 12:0071cb144c7a 1343
JMF 12:0071cb144c7a 1344 /*
JMF 12:0071cb144c7a 1345 * Return an informational string about the certificate.
JMF 12:0071cb144c7a 1346 */
JMF 12:0071cb144c7a 1347 #define BEFORE_COLON 18
JMF 12:0071cb144c7a 1348 #define BC "18"
JMF 12:0071cb144c7a 1349 int mbedtls_x509_crt_info( char *buf, size_t size, const char *prefix,
JMF 12:0071cb144c7a 1350 const mbedtls_x509_crt *crt )
JMF 12:0071cb144c7a 1351 {
JMF 12:0071cb144c7a 1352 int ret;
JMF 12:0071cb144c7a 1353 size_t n;
JMF 12:0071cb144c7a 1354 char *p;
JMF 12:0071cb144c7a 1355 char key_size_str[BEFORE_COLON];
JMF 12:0071cb144c7a 1356
JMF 12:0071cb144c7a 1357 p = buf;
JMF 12:0071cb144c7a 1358 n = size;
JMF 12:0071cb144c7a 1359
JMF 12:0071cb144c7a 1360 if( NULL == crt )
JMF 12:0071cb144c7a 1361 {
JMF 12:0071cb144c7a 1362 ret = mbedtls_snprintf( p, n, "\nCertificate is uninitialised!\n" );
JMF 12:0071cb144c7a 1363 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1364
JMF 12:0071cb144c7a 1365 return( (int) ( size - n ) );
JMF 12:0071cb144c7a 1366 }
JMF 12:0071cb144c7a 1367
JMF 12:0071cb144c7a 1368 ret = mbedtls_snprintf( p, n, "%scert. version : %d\n",
JMF 12:0071cb144c7a 1369 prefix, crt->version );
JMF 12:0071cb144c7a 1370 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1371 ret = mbedtls_snprintf( p, n, "%sserial number : ",
JMF 12:0071cb144c7a 1372 prefix );
JMF 12:0071cb144c7a 1373 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1374
JMF 12:0071cb144c7a 1375 ret = mbedtls_x509_serial_gets( p, n, &crt->serial );
JMF 12:0071cb144c7a 1376 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1377
JMF 12:0071cb144c7a 1378 ret = mbedtls_snprintf( p, n, "\n%sissuer name : ", prefix );
JMF 12:0071cb144c7a 1379 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1380 ret = mbedtls_x509_dn_gets( p, n, &crt->issuer );
JMF 12:0071cb144c7a 1381 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1382
JMF 12:0071cb144c7a 1383 ret = mbedtls_snprintf( p, n, "\n%ssubject name : ", prefix );
JMF 12:0071cb144c7a 1384 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1385 ret = mbedtls_x509_dn_gets( p, n, &crt->subject );
JMF 12:0071cb144c7a 1386 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1387
JMF 12:0071cb144c7a 1388 ret = mbedtls_snprintf( p, n, "\n%sissued on : " \
JMF 12:0071cb144c7a 1389 "%04d-%02d-%02d %02d:%02d:%02d", prefix,
JMF 12:0071cb144c7a 1390 crt->valid_from.year, crt->valid_from.mon,
JMF 12:0071cb144c7a 1391 crt->valid_from.day, crt->valid_from.hour,
JMF 12:0071cb144c7a 1392 crt->valid_from.min, crt->valid_from.sec );
JMF 12:0071cb144c7a 1393 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1394
JMF 12:0071cb144c7a 1395 ret = mbedtls_snprintf( p, n, "\n%sexpires on : " \
JMF 12:0071cb144c7a 1396 "%04d-%02d-%02d %02d:%02d:%02d", prefix,
JMF 12:0071cb144c7a 1397 crt->valid_to.year, crt->valid_to.mon,
JMF 12:0071cb144c7a 1398 crt->valid_to.day, crt->valid_to.hour,
JMF 12:0071cb144c7a 1399 crt->valid_to.min, crt->valid_to.sec );
JMF 12:0071cb144c7a 1400 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1401
JMF 12:0071cb144c7a 1402 ret = mbedtls_snprintf( p, n, "\n%ssigned using : ", prefix );
JMF 12:0071cb144c7a 1403 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1404
JMF 12:0071cb144c7a 1405 ret = mbedtls_x509_sig_alg_gets( p, n, &crt->sig_oid, crt->sig_pk,
JMF 12:0071cb144c7a 1406 crt->sig_md, crt->sig_opts );
JMF 12:0071cb144c7a 1407 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1408
JMF 12:0071cb144c7a 1409 /* Key size */
JMF 12:0071cb144c7a 1410 if( ( ret = mbedtls_x509_key_size_helper( key_size_str, BEFORE_COLON,
JMF 12:0071cb144c7a 1411 mbedtls_pk_get_name( &crt->pk ) ) ) != 0 )
JMF 12:0071cb144c7a 1412 {
JMF 12:0071cb144c7a 1413 return( ret );
JMF 12:0071cb144c7a 1414 }
JMF 12:0071cb144c7a 1415
JMF 12:0071cb144c7a 1416 ret = mbedtls_snprintf( p, n, "\n%s%-" BC "s: %d bits", prefix, key_size_str,
JMF 12:0071cb144c7a 1417 (int) mbedtls_pk_get_bitlen( &crt->pk ) );
JMF 12:0071cb144c7a 1418 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1419
JMF 12:0071cb144c7a 1420 /*
JMF 12:0071cb144c7a 1421 * Optional extensions
JMF 12:0071cb144c7a 1422 */
JMF 12:0071cb144c7a 1423
JMF 12:0071cb144c7a 1424 if( crt->ext_types & MBEDTLS_X509_EXT_BASIC_CONSTRAINTS )
JMF 12:0071cb144c7a 1425 {
JMF 12:0071cb144c7a 1426 ret = mbedtls_snprintf( p, n, "\n%sbasic constraints : CA=%s", prefix,
JMF 12:0071cb144c7a 1427 crt->ca_istrue ? "true" : "false" );
JMF 12:0071cb144c7a 1428 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1429
JMF 12:0071cb144c7a 1430 if( crt->max_pathlen > 0 )
JMF 12:0071cb144c7a 1431 {
JMF 12:0071cb144c7a 1432 ret = mbedtls_snprintf( p, n, ", max_pathlen=%d", crt->max_pathlen - 1 );
JMF 12:0071cb144c7a 1433 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1434 }
JMF 12:0071cb144c7a 1435 }
JMF 12:0071cb144c7a 1436
JMF 12:0071cb144c7a 1437 if( crt->ext_types & MBEDTLS_X509_EXT_SUBJECT_ALT_NAME )
JMF 12:0071cb144c7a 1438 {
JMF 12:0071cb144c7a 1439 ret = mbedtls_snprintf( p, n, "\n%ssubject alt name : ", prefix );
JMF 12:0071cb144c7a 1440 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1441
JMF 12:0071cb144c7a 1442 if( ( ret = x509_info_subject_alt_name( &p, &n,
JMF 12:0071cb144c7a 1443 &crt->subject_alt_names ) ) != 0 )
JMF 12:0071cb144c7a 1444 return( ret );
JMF 12:0071cb144c7a 1445 }
JMF 12:0071cb144c7a 1446
JMF 12:0071cb144c7a 1447 if( crt->ext_types & MBEDTLS_X509_EXT_NS_CERT_TYPE )
JMF 12:0071cb144c7a 1448 {
JMF 12:0071cb144c7a 1449 ret = mbedtls_snprintf( p, n, "\n%scert. type : ", prefix );
JMF 12:0071cb144c7a 1450 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1451
JMF 12:0071cb144c7a 1452 if( ( ret = x509_info_cert_type( &p, &n, crt->ns_cert_type ) ) != 0 )
JMF 12:0071cb144c7a 1453 return( ret );
JMF 12:0071cb144c7a 1454 }
JMF 12:0071cb144c7a 1455
JMF 12:0071cb144c7a 1456 if( crt->ext_types & MBEDTLS_X509_EXT_KEY_USAGE )
JMF 12:0071cb144c7a 1457 {
JMF 12:0071cb144c7a 1458 ret = mbedtls_snprintf( p, n, "\n%skey usage : ", prefix );
JMF 12:0071cb144c7a 1459 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1460
JMF 12:0071cb144c7a 1461 if( ( ret = x509_info_key_usage( &p, &n, crt->key_usage ) ) != 0 )
JMF 12:0071cb144c7a 1462 return( ret );
JMF 12:0071cb144c7a 1463 }
JMF 12:0071cb144c7a 1464
JMF 12:0071cb144c7a 1465 if( crt->ext_types & MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE )
JMF 12:0071cb144c7a 1466 {
JMF 12:0071cb144c7a 1467 ret = mbedtls_snprintf( p, n, "\n%sext key usage : ", prefix );
JMF 12:0071cb144c7a 1468 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1469
JMF 12:0071cb144c7a 1470 if( ( ret = x509_info_ext_key_usage( &p, &n,
JMF 12:0071cb144c7a 1471 &crt->ext_key_usage ) ) != 0 )
JMF 12:0071cb144c7a 1472 return( ret );
JMF 12:0071cb144c7a 1473 }
JMF 12:0071cb144c7a 1474
JMF 12:0071cb144c7a 1475 ret = mbedtls_snprintf( p, n, "\n" );
JMF 12:0071cb144c7a 1476 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1477
JMF 12:0071cb144c7a 1478 return( (int) ( size - n ) );
JMF 12:0071cb144c7a 1479 }
JMF 12:0071cb144c7a 1480
JMF 12:0071cb144c7a 1481 struct x509_crt_verify_string {
JMF 12:0071cb144c7a 1482 int code;
JMF 12:0071cb144c7a 1483 const char *string;
JMF 12:0071cb144c7a 1484 };
JMF 12:0071cb144c7a 1485
JMF 12:0071cb144c7a 1486 static const struct x509_crt_verify_string x509_crt_verify_strings[] = {
JMF 12:0071cb144c7a 1487 { MBEDTLS_X509_BADCERT_EXPIRED, "The certificate validity has expired" },
JMF 12:0071cb144c7a 1488 { MBEDTLS_X509_BADCERT_REVOKED, "The certificate has been revoked (is on a CRL)" },
JMF 12:0071cb144c7a 1489 { MBEDTLS_X509_BADCERT_CN_MISMATCH, "The certificate Common Name (CN) does not match with the expected CN" },
JMF 12:0071cb144c7a 1490 { MBEDTLS_X509_BADCERT_NOT_TRUSTED, "The certificate is not correctly signed by the trusted CA" },
JMF 12:0071cb144c7a 1491 { MBEDTLS_X509_BADCRL_NOT_TRUSTED, "The CRL is not correctly signed by the trusted CA" },
JMF 12:0071cb144c7a 1492 { MBEDTLS_X509_BADCRL_EXPIRED, "The CRL is expired" },
JMF 12:0071cb144c7a 1493 { MBEDTLS_X509_BADCERT_MISSING, "Certificate was missing" },
JMF 12:0071cb144c7a 1494 { MBEDTLS_X509_BADCERT_SKIP_VERIFY, "Certificate verification was skipped" },
JMF 12:0071cb144c7a 1495 { MBEDTLS_X509_BADCERT_OTHER, "Other reason (can be used by verify callback)" },
JMF 12:0071cb144c7a 1496 { MBEDTLS_X509_BADCERT_FUTURE, "The certificate validity starts in the future" },
JMF 12:0071cb144c7a 1497 { MBEDTLS_X509_BADCRL_FUTURE, "The CRL is from the future" },
JMF 12:0071cb144c7a 1498 { MBEDTLS_X509_BADCERT_KEY_USAGE, "Usage does not match the keyUsage extension" },
JMF 12:0071cb144c7a 1499 { MBEDTLS_X509_BADCERT_EXT_KEY_USAGE, "Usage does not match the extendedKeyUsage extension" },
JMF 12:0071cb144c7a 1500 { MBEDTLS_X509_BADCERT_NS_CERT_TYPE, "Usage does not match the nsCertType extension" },
JMF 12:0071cb144c7a 1501 { MBEDTLS_X509_BADCERT_BAD_MD, "The certificate is signed with an unacceptable hash." },
JMF 12:0071cb144c7a 1502 { MBEDTLS_X509_BADCERT_BAD_PK, "The certificate is signed with an unacceptable PK alg (eg RSA vs ECDSA)." },
JMF 12:0071cb144c7a 1503 { MBEDTLS_X509_BADCERT_BAD_KEY, "The certificate is signed with an unacceptable key (eg bad curve, RSA too short)." },
JMF 12:0071cb144c7a 1504 { MBEDTLS_X509_BADCRL_BAD_MD, "The CRL is signed with an unacceptable hash." },
JMF 12:0071cb144c7a 1505 { MBEDTLS_X509_BADCRL_BAD_PK, "The CRL is signed with an unacceptable PK alg (eg RSA vs ECDSA)." },
JMF 12:0071cb144c7a 1506 { MBEDTLS_X509_BADCRL_BAD_KEY, "The CRL is signed with an unacceptable key (eg bad curve, RSA too short)." },
JMF 12:0071cb144c7a 1507 { 0, NULL }
JMF 12:0071cb144c7a 1508 };
JMF 12:0071cb144c7a 1509
JMF 12:0071cb144c7a 1510 int mbedtls_x509_crt_verify_info( char *buf, size_t size, const char *prefix,
JMF 12:0071cb144c7a 1511 uint32_t flags )
JMF 12:0071cb144c7a 1512 {
JMF 12:0071cb144c7a 1513 int ret;
JMF 12:0071cb144c7a 1514 const struct x509_crt_verify_string *cur;
JMF 12:0071cb144c7a 1515 char *p = buf;
JMF 12:0071cb144c7a 1516 size_t n = size;
JMF 12:0071cb144c7a 1517
JMF 12:0071cb144c7a 1518 for( cur = x509_crt_verify_strings; cur->string != NULL ; cur++ )
JMF 12:0071cb144c7a 1519 {
JMF 12:0071cb144c7a 1520 if( ( flags & cur->code ) == 0 )
JMF 12:0071cb144c7a 1521 continue;
JMF 12:0071cb144c7a 1522
JMF 12:0071cb144c7a 1523 ret = mbedtls_snprintf( p, n, "%s%s\n", prefix, cur->string );
JMF 12:0071cb144c7a 1524 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1525 flags ^= cur->code;
JMF 12:0071cb144c7a 1526 }
JMF 12:0071cb144c7a 1527
JMF 12:0071cb144c7a 1528 if( flags != 0 )
JMF 12:0071cb144c7a 1529 {
JMF 12:0071cb144c7a 1530 ret = mbedtls_snprintf( p, n, "%sUnknown reason "
JMF 12:0071cb144c7a 1531 "(this should not happen)\n", prefix );
JMF 12:0071cb144c7a 1532 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 1533 }
JMF 12:0071cb144c7a 1534
JMF 12:0071cb144c7a 1535 return( (int) ( size - n ) );
JMF 12:0071cb144c7a 1536 }
JMF 12:0071cb144c7a 1537
JMF 12:0071cb144c7a 1538 #if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
JMF 12:0071cb144c7a 1539 int mbedtls_x509_crt_check_key_usage( const mbedtls_x509_crt *crt,
JMF 12:0071cb144c7a 1540 unsigned int usage )
JMF 12:0071cb144c7a 1541 {
JMF 12:0071cb144c7a 1542 unsigned int usage_must, usage_may;
JMF 12:0071cb144c7a 1543 unsigned int may_mask = MBEDTLS_X509_KU_ENCIPHER_ONLY
JMF 12:0071cb144c7a 1544 | MBEDTLS_X509_KU_DECIPHER_ONLY;
JMF 12:0071cb144c7a 1545
JMF 12:0071cb144c7a 1546 if( ( crt->ext_types & MBEDTLS_X509_EXT_KEY_USAGE ) == 0 )
JMF 12:0071cb144c7a 1547 return( 0 );
JMF 12:0071cb144c7a 1548
JMF 12:0071cb144c7a 1549 usage_must = usage & ~may_mask;
JMF 12:0071cb144c7a 1550
JMF 12:0071cb144c7a 1551 if( ( ( crt->key_usage & ~may_mask ) & usage_must ) != usage_must )
JMF 12:0071cb144c7a 1552 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 1553
JMF 12:0071cb144c7a 1554 usage_may = usage & may_mask;
JMF 12:0071cb144c7a 1555
JMF 12:0071cb144c7a 1556 if( ( ( crt->key_usage & may_mask ) | usage_may ) != usage_may )
JMF 12:0071cb144c7a 1557 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 1558
JMF 12:0071cb144c7a 1559 return( 0 );
JMF 12:0071cb144c7a 1560 }
JMF 12:0071cb144c7a 1561 #endif
JMF 12:0071cb144c7a 1562
JMF 12:0071cb144c7a 1563 #if defined(MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE)
JMF 12:0071cb144c7a 1564 int mbedtls_x509_crt_check_extended_key_usage( const mbedtls_x509_crt *crt,
JMF 12:0071cb144c7a 1565 const char *usage_oid,
JMF 12:0071cb144c7a 1566 size_t usage_len )
JMF 12:0071cb144c7a 1567 {
JMF 12:0071cb144c7a 1568 const mbedtls_x509_sequence *cur;
JMF 12:0071cb144c7a 1569
JMF 12:0071cb144c7a 1570 /* Extension is not mandatory, absent means no restriction */
JMF 12:0071cb144c7a 1571 if( ( crt->ext_types & MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE ) == 0 )
JMF 12:0071cb144c7a 1572 return( 0 );
JMF 12:0071cb144c7a 1573
JMF 12:0071cb144c7a 1574 /*
JMF 12:0071cb144c7a 1575 * Look for the requested usage (or wildcard ANY) in our list
JMF 12:0071cb144c7a 1576 */
JMF 12:0071cb144c7a 1577 for( cur = &crt->ext_key_usage; cur != NULL; cur = cur->next )
JMF 12:0071cb144c7a 1578 {
JMF 12:0071cb144c7a 1579 const mbedtls_x509_buf *cur_oid = &cur->buf;
JMF 12:0071cb144c7a 1580
JMF 12:0071cb144c7a 1581 if( cur_oid->len == usage_len &&
JMF 12:0071cb144c7a 1582 memcmp( cur_oid->p, usage_oid, usage_len ) == 0 )
JMF 12:0071cb144c7a 1583 {
JMF 12:0071cb144c7a 1584 return( 0 );
JMF 12:0071cb144c7a 1585 }
JMF 12:0071cb144c7a 1586
JMF 12:0071cb144c7a 1587 if( MBEDTLS_OID_CMP( MBEDTLS_OID_ANY_EXTENDED_KEY_USAGE, cur_oid ) == 0 )
JMF 12:0071cb144c7a 1588 return( 0 );
JMF 12:0071cb144c7a 1589 }
JMF 12:0071cb144c7a 1590
JMF 12:0071cb144c7a 1591 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 1592 }
JMF 12:0071cb144c7a 1593 #endif /* MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE */
JMF 12:0071cb144c7a 1594
JMF 12:0071cb144c7a 1595 #if defined(MBEDTLS_X509_CRL_PARSE_C)
JMF 12:0071cb144c7a 1596 /*
JMF 12:0071cb144c7a 1597 * Return 1 if the certificate is revoked, or 0 otherwise.
JMF 12:0071cb144c7a 1598 */
JMF 12:0071cb144c7a 1599 int mbedtls_x509_crt_is_revoked( const mbedtls_x509_crt *crt, const mbedtls_x509_crl *crl )
JMF 12:0071cb144c7a 1600 {
JMF 12:0071cb144c7a 1601 const mbedtls_x509_crl_entry *cur = &crl->entry;
JMF 12:0071cb144c7a 1602
JMF 12:0071cb144c7a 1603 while( cur != NULL && cur->serial.len != 0 )
JMF 12:0071cb144c7a 1604 {
JMF 12:0071cb144c7a 1605 if( crt->serial.len == cur->serial.len &&
JMF 12:0071cb144c7a 1606 memcmp( crt->serial.p, cur->serial.p, crt->serial.len ) == 0 )
JMF 12:0071cb144c7a 1607 {
JMF 12:0071cb144c7a 1608 if( mbedtls_x509_time_is_past( &cur->revocation_date ) )
JMF 12:0071cb144c7a 1609 return( 1 );
JMF 12:0071cb144c7a 1610 }
JMF 12:0071cb144c7a 1611
JMF 12:0071cb144c7a 1612 cur = cur->next;
JMF 12:0071cb144c7a 1613 }
JMF 12:0071cb144c7a 1614
JMF 12:0071cb144c7a 1615 return( 0 );
JMF 12:0071cb144c7a 1616 }
JMF 12:0071cb144c7a 1617
JMF 12:0071cb144c7a 1618 /*
JMF 12:0071cb144c7a 1619 * Check that the given certificate is not revoked according to the CRL.
JMF 12:0071cb144c7a 1620 * Skip validation is no CRL for the given CA is present.
JMF 12:0071cb144c7a 1621 */
JMF 12:0071cb144c7a 1622 static int x509_crt_verifycrl( mbedtls_x509_crt *crt, mbedtls_x509_crt *ca,
JMF 12:0071cb144c7a 1623 mbedtls_x509_crl *crl_list,
JMF 12:0071cb144c7a 1624 const mbedtls_x509_crt_profile *profile )
JMF 12:0071cb144c7a 1625 {
JMF 12:0071cb144c7a 1626 int flags = 0;
JMF 12:0071cb144c7a 1627 unsigned char hash[MBEDTLS_MD_MAX_SIZE];
JMF 12:0071cb144c7a 1628 const mbedtls_md_info_t *md_info;
JMF 12:0071cb144c7a 1629
JMF 12:0071cb144c7a 1630 if( ca == NULL )
JMF 12:0071cb144c7a 1631 return( flags );
JMF 12:0071cb144c7a 1632
JMF 12:0071cb144c7a 1633 while( crl_list != NULL )
JMF 12:0071cb144c7a 1634 {
JMF 12:0071cb144c7a 1635 if( crl_list->version == 0 ||
JMF 12:0071cb144c7a 1636 crl_list->issuer_raw.len != ca->subject_raw.len ||
JMF 12:0071cb144c7a 1637 memcmp( crl_list->issuer_raw.p, ca->subject_raw.p,
JMF 12:0071cb144c7a 1638 crl_list->issuer_raw.len ) != 0 )
JMF 12:0071cb144c7a 1639 {
JMF 12:0071cb144c7a 1640 crl_list = crl_list->next;
JMF 12:0071cb144c7a 1641 continue;
JMF 12:0071cb144c7a 1642 }
JMF 12:0071cb144c7a 1643
JMF 12:0071cb144c7a 1644 /*
JMF 12:0071cb144c7a 1645 * Check if the CA is configured to sign CRLs
JMF 12:0071cb144c7a 1646 */
JMF 12:0071cb144c7a 1647 #if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
JMF 12:0071cb144c7a 1648 if( mbedtls_x509_crt_check_key_usage( ca, MBEDTLS_X509_KU_CRL_SIGN ) != 0 )
JMF 12:0071cb144c7a 1649 {
JMF 12:0071cb144c7a 1650 flags |= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
JMF 12:0071cb144c7a 1651 break;
JMF 12:0071cb144c7a 1652 }
JMF 12:0071cb144c7a 1653 #endif
JMF 12:0071cb144c7a 1654
JMF 12:0071cb144c7a 1655 /*
JMF 12:0071cb144c7a 1656 * Check if CRL is correctly signed by the trusted CA
JMF 12:0071cb144c7a 1657 */
JMF 12:0071cb144c7a 1658 if( x509_profile_check_md_alg( profile, crl_list->sig_md ) != 0 )
JMF 12:0071cb144c7a 1659 flags |= MBEDTLS_X509_BADCRL_BAD_MD;
JMF 12:0071cb144c7a 1660
JMF 12:0071cb144c7a 1661 if( x509_profile_check_pk_alg( profile, crl_list->sig_pk ) != 0 )
JMF 12:0071cb144c7a 1662 flags |= MBEDTLS_X509_BADCRL_BAD_PK;
JMF 12:0071cb144c7a 1663
JMF 12:0071cb144c7a 1664 md_info = mbedtls_md_info_from_type( crl_list->sig_md );
JMF 12:0071cb144c7a 1665 if( md_info == NULL )
JMF 12:0071cb144c7a 1666 {
JMF 12:0071cb144c7a 1667 /*
JMF 12:0071cb144c7a 1668 * Cannot check 'unknown' hash
JMF 12:0071cb144c7a 1669 */
JMF 12:0071cb144c7a 1670 flags |= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
JMF 12:0071cb144c7a 1671 break;
JMF 12:0071cb144c7a 1672 }
JMF 12:0071cb144c7a 1673
JMF 12:0071cb144c7a 1674 mbedtls_md( md_info, crl_list->tbs.p, crl_list->tbs.len, hash );
JMF 12:0071cb144c7a 1675
JMF 12:0071cb144c7a 1676 if( x509_profile_check_key( profile, crl_list->sig_pk, &ca->pk ) != 0 )
JMF 12:0071cb144c7a 1677 flags |= MBEDTLS_X509_BADCERT_BAD_KEY;
JMF 12:0071cb144c7a 1678
JMF 12:0071cb144c7a 1679 if( mbedtls_pk_verify_ext( crl_list->sig_pk, crl_list->sig_opts, &ca->pk,
JMF 12:0071cb144c7a 1680 crl_list->sig_md, hash, mbedtls_md_get_size( md_info ),
JMF 12:0071cb144c7a 1681 crl_list->sig.p, crl_list->sig.len ) != 0 )
JMF 12:0071cb144c7a 1682 {
JMF 12:0071cb144c7a 1683 flags |= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
JMF 12:0071cb144c7a 1684 break;
JMF 12:0071cb144c7a 1685 }
JMF 12:0071cb144c7a 1686
JMF 12:0071cb144c7a 1687 /*
JMF 12:0071cb144c7a 1688 * Check for validity of CRL (Do not drop out)
JMF 12:0071cb144c7a 1689 */
JMF 12:0071cb144c7a 1690 if( mbedtls_x509_time_is_past( &crl_list->next_update ) )
JMF 12:0071cb144c7a 1691 flags |= MBEDTLS_X509_BADCRL_EXPIRED;
JMF 12:0071cb144c7a 1692
JMF 12:0071cb144c7a 1693 if( mbedtls_x509_time_is_future( &crl_list->this_update ) )
JMF 12:0071cb144c7a 1694 flags |= MBEDTLS_X509_BADCRL_FUTURE;
JMF 12:0071cb144c7a 1695
JMF 12:0071cb144c7a 1696 /*
JMF 12:0071cb144c7a 1697 * Check if certificate is revoked
JMF 12:0071cb144c7a 1698 */
JMF 12:0071cb144c7a 1699 if( mbedtls_x509_crt_is_revoked( crt, crl_list ) )
JMF 12:0071cb144c7a 1700 {
JMF 12:0071cb144c7a 1701 flags |= MBEDTLS_X509_BADCERT_REVOKED;
JMF 12:0071cb144c7a 1702 break;
JMF 12:0071cb144c7a 1703 }
JMF 12:0071cb144c7a 1704
JMF 12:0071cb144c7a 1705 crl_list = crl_list->next;
JMF 12:0071cb144c7a 1706 }
JMF 12:0071cb144c7a 1707
JMF 12:0071cb144c7a 1708 return( flags );
JMF 12:0071cb144c7a 1709 }
JMF 12:0071cb144c7a 1710 #endif /* MBEDTLS_X509_CRL_PARSE_C */
JMF 12:0071cb144c7a 1711
JMF 12:0071cb144c7a 1712 /*
JMF 12:0071cb144c7a 1713 * Like memcmp, but case-insensitive and always returns -1 if different
JMF 12:0071cb144c7a 1714 */
JMF 12:0071cb144c7a 1715 static int x509_memcasecmp( const void *s1, const void *s2, size_t len )
JMF 12:0071cb144c7a 1716 {
JMF 12:0071cb144c7a 1717 size_t i;
JMF 12:0071cb144c7a 1718 unsigned char diff;
JMF 12:0071cb144c7a 1719 const unsigned char *n1 = s1, *n2 = s2;
JMF 12:0071cb144c7a 1720
JMF 12:0071cb144c7a 1721 for( i = 0; i < len; i++ )
JMF 12:0071cb144c7a 1722 {
JMF 12:0071cb144c7a 1723 diff = n1[i] ^ n2[i];
JMF 12:0071cb144c7a 1724
JMF 12:0071cb144c7a 1725 if( diff == 0 )
JMF 12:0071cb144c7a 1726 continue;
JMF 12:0071cb144c7a 1727
JMF 12:0071cb144c7a 1728 if( diff == 32 &&
JMF 12:0071cb144c7a 1729 ( ( n1[i] >= 'a' && n1[i] <= 'z' ) ||
JMF 12:0071cb144c7a 1730 ( n1[i] >= 'A' && n1[i] <= 'Z' ) ) )
JMF 12:0071cb144c7a 1731 {
JMF 12:0071cb144c7a 1732 continue;
JMF 12:0071cb144c7a 1733 }
JMF 12:0071cb144c7a 1734
JMF 12:0071cb144c7a 1735 return( -1 );
JMF 12:0071cb144c7a 1736 }
JMF 12:0071cb144c7a 1737
JMF 12:0071cb144c7a 1738 return( 0 );
JMF 12:0071cb144c7a 1739 }
JMF 12:0071cb144c7a 1740
JMF 12:0071cb144c7a 1741 /*
JMF 12:0071cb144c7a 1742 * Return 0 if name matches wildcard, -1 otherwise
JMF 12:0071cb144c7a 1743 */
JMF 12:0071cb144c7a 1744 static int x509_check_wildcard( const char *cn, mbedtls_x509_buf *name )
JMF 12:0071cb144c7a 1745 {
JMF 12:0071cb144c7a 1746 size_t i;
JMF 12:0071cb144c7a 1747 size_t cn_idx = 0, cn_len = strlen( cn );
JMF 12:0071cb144c7a 1748
JMF 12:0071cb144c7a 1749 if( name->len < 3 || name->p[0] != '*' || name->p[1] != '.' )
JMF 12:0071cb144c7a 1750 return( 0 );
JMF 12:0071cb144c7a 1751
JMF 12:0071cb144c7a 1752 for( i = 0; i < cn_len; ++i )
JMF 12:0071cb144c7a 1753 {
JMF 12:0071cb144c7a 1754 if( cn[i] == '.' )
JMF 12:0071cb144c7a 1755 {
JMF 12:0071cb144c7a 1756 cn_idx = i;
JMF 12:0071cb144c7a 1757 break;
JMF 12:0071cb144c7a 1758 }
JMF 12:0071cb144c7a 1759 }
JMF 12:0071cb144c7a 1760
JMF 12:0071cb144c7a 1761 if( cn_idx == 0 )
JMF 12:0071cb144c7a 1762 return( -1 );
JMF 12:0071cb144c7a 1763
JMF 12:0071cb144c7a 1764 if( cn_len - cn_idx == name->len - 1 &&
JMF 12:0071cb144c7a 1765 x509_memcasecmp( name->p + 1, cn + cn_idx, name->len - 1 ) == 0 )
JMF 12:0071cb144c7a 1766 {
JMF 12:0071cb144c7a 1767 return( 0 );
JMF 12:0071cb144c7a 1768 }
JMF 12:0071cb144c7a 1769
JMF 12:0071cb144c7a 1770 return( -1 );
JMF 12:0071cb144c7a 1771 }
JMF 12:0071cb144c7a 1772
JMF 12:0071cb144c7a 1773 /*
JMF 12:0071cb144c7a 1774 * Compare two X.509 strings, case-insensitive, and allowing for some encoding
JMF 12:0071cb144c7a 1775 * variations (but not all).
JMF 12:0071cb144c7a 1776 *
JMF 12:0071cb144c7a 1777 * Return 0 if equal, -1 otherwise.
JMF 12:0071cb144c7a 1778 */
JMF 12:0071cb144c7a 1779 static int x509_string_cmp( const mbedtls_x509_buf *a, const mbedtls_x509_buf *b )
JMF 12:0071cb144c7a 1780 {
JMF 12:0071cb144c7a 1781 if( a->tag == b->tag &&
JMF 12:0071cb144c7a 1782 a->len == b->len &&
JMF 12:0071cb144c7a 1783 memcmp( a->p, b->p, b->len ) == 0 )
JMF 12:0071cb144c7a 1784 {
JMF 12:0071cb144c7a 1785 return( 0 );
JMF 12:0071cb144c7a 1786 }
JMF 12:0071cb144c7a 1787
JMF 12:0071cb144c7a 1788 if( ( a->tag == MBEDTLS_ASN1_UTF8_STRING || a->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) &&
JMF 12:0071cb144c7a 1789 ( b->tag == MBEDTLS_ASN1_UTF8_STRING || b->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) &&
JMF 12:0071cb144c7a 1790 a->len == b->len &&
JMF 12:0071cb144c7a 1791 x509_memcasecmp( a->p, b->p, b->len ) == 0 )
JMF 12:0071cb144c7a 1792 {
JMF 12:0071cb144c7a 1793 return( 0 );
JMF 12:0071cb144c7a 1794 }
JMF 12:0071cb144c7a 1795
JMF 12:0071cb144c7a 1796 return( -1 );
JMF 12:0071cb144c7a 1797 }
JMF 12:0071cb144c7a 1798
JMF 12:0071cb144c7a 1799 /*
JMF 12:0071cb144c7a 1800 * Compare two X.509 Names (aka rdnSequence).
JMF 12:0071cb144c7a 1801 *
JMF 12:0071cb144c7a 1802 * See RFC 5280 section 7.1, though we don't implement the whole algorithm:
JMF 12:0071cb144c7a 1803 * we sometimes return unequal when the full algorithm would return equal,
JMF 12:0071cb144c7a 1804 * but never the other way. (In particular, we don't do Unicode normalisation
JMF 12:0071cb144c7a 1805 * or space folding.)
JMF 12:0071cb144c7a 1806 *
JMF 12:0071cb144c7a 1807 * Return 0 if equal, -1 otherwise.
JMF 12:0071cb144c7a 1808 */
JMF 12:0071cb144c7a 1809 static int x509_name_cmp( const mbedtls_x509_name *a, const mbedtls_x509_name *b )
JMF 12:0071cb144c7a 1810 {
JMF 12:0071cb144c7a 1811 /* Avoid recursion, it might not be optimised by the compiler */
JMF 12:0071cb144c7a 1812 while( a != NULL || b != NULL )
JMF 12:0071cb144c7a 1813 {
JMF 12:0071cb144c7a 1814 if( a == NULL || b == NULL )
JMF 12:0071cb144c7a 1815 return( -1 );
JMF 12:0071cb144c7a 1816
JMF 12:0071cb144c7a 1817 /* type */
JMF 12:0071cb144c7a 1818 if( a->oid.tag != b->oid.tag ||
JMF 12:0071cb144c7a 1819 a->oid.len != b->oid.len ||
JMF 12:0071cb144c7a 1820 memcmp( a->oid.p, b->oid.p, b->oid.len ) != 0 )
JMF 12:0071cb144c7a 1821 {
JMF 12:0071cb144c7a 1822 return( -1 );
JMF 12:0071cb144c7a 1823 }
JMF 12:0071cb144c7a 1824
JMF 12:0071cb144c7a 1825 /* value */
JMF 12:0071cb144c7a 1826 if( x509_string_cmp( &a->val, &b->val ) != 0 )
JMF 12:0071cb144c7a 1827 return( -1 );
JMF 12:0071cb144c7a 1828
JMF 12:0071cb144c7a 1829 /* structure of the list of sets */
JMF 12:0071cb144c7a 1830 if( a->next_merged != b->next_merged )
JMF 12:0071cb144c7a 1831 return( -1 );
JMF 12:0071cb144c7a 1832
JMF 12:0071cb144c7a 1833 a = a->next;
JMF 12:0071cb144c7a 1834 b = b->next;
JMF 12:0071cb144c7a 1835 }
JMF 12:0071cb144c7a 1836
JMF 12:0071cb144c7a 1837 /* a == NULL == b */
JMF 12:0071cb144c7a 1838 return( 0 );
JMF 12:0071cb144c7a 1839 }
JMF 12:0071cb144c7a 1840
JMF 12:0071cb144c7a 1841 /*
JMF 12:0071cb144c7a 1842 * Check if 'parent' is a suitable parent (signing CA) for 'child'.
JMF 12:0071cb144c7a 1843 * Return 0 if yes, -1 if not.
JMF 12:0071cb144c7a 1844 *
JMF 12:0071cb144c7a 1845 * top means parent is a locally-trusted certificate
JMF 12:0071cb144c7a 1846 * bottom means child is the end entity cert
JMF 12:0071cb144c7a 1847 */
JMF 12:0071cb144c7a 1848 static int x509_crt_check_parent( const mbedtls_x509_crt *child,
JMF 12:0071cb144c7a 1849 const mbedtls_x509_crt *parent,
JMF 12:0071cb144c7a 1850 int top, int bottom )
JMF 12:0071cb144c7a 1851 {
JMF 12:0071cb144c7a 1852 int need_ca_bit;
JMF 12:0071cb144c7a 1853
JMF 12:0071cb144c7a 1854 /* Parent must be the issuer */
JMF 12:0071cb144c7a 1855 if( x509_name_cmp( &child->issuer, &parent->subject ) != 0 )
JMF 12:0071cb144c7a 1856 return( -1 );
JMF 12:0071cb144c7a 1857
JMF 12:0071cb144c7a 1858 /* Parent must have the basicConstraints CA bit set as a general rule */
JMF 12:0071cb144c7a 1859 need_ca_bit = 1;
JMF 12:0071cb144c7a 1860
JMF 12:0071cb144c7a 1861 /* Exception: v1/v2 certificates that are locally trusted. */
JMF 12:0071cb144c7a 1862 if( top && parent->version < 3 )
JMF 12:0071cb144c7a 1863 need_ca_bit = 0;
JMF 12:0071cb144c7a 1864
JMF 12:0071cb144c7a 1865 /* Exception: self-signed end-entity certs that are locally trusted. */
JMF 12:0071cb144c7a 1866 if( top && bottom &&
JMF 12:0071cb144c7a 1867 child->raw.len == parent->raw.len &&
JMF 12:0071cb144c7a 1868 memcmp( child->raw.p, parent->raw.p, child->raw.len ) == 0 )
JMF 12:0071cb144c7a 1869 {
JMF 12:0071cb144c7a 1870 need_ca_bit = 0;
JMF 12:0071cb144c7a 1871 }
JMF 12:0071cb144c7a 1872
JMF 12:0071cb144c7a 1873 if( need_ca_bit && ! parent->ca_istrue )
JMF 12:0071cb144c7a 1874 return( -1 );
JMF 12:0071cb144c7a 1875
JMF 12:0071cb144c7a 1876 #if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
JMF 12:0071cb144c7a 1877 if( need_ca_bit &&
JMF 12:0071cb144c7a 1878 mbedtls_x509_crt_check_key_usage( parent, MBEDTLS_X509_KU_KEY_CERT_SIGN ) != 0 )
JMF 12:0071cb144c7a 1879 {
JMF 12:0071cb144c7a 1880 return( -1 );
JMF 12:0071cb144c7a 1881 }
JMF 12:0071cb144c7a 1882 #endif
JMF 12:0071cb144c7a 1883
JMF 12:0071cb144c7a 1884 return( 0 );
JMF 12:0071cb144c7a 1885 }
JMF 12:0071cb144c7a 1886
JMF 12:0071cb144c7a 1887 static int x509_crt_verify_top(
JMF 12:0071cb144c7a 1888 mbedtls_x509_crt *child, mbedtls_x509_crt *trust_ca,
JMF 12:0071cb144c7a 1889 mbedtls_x509_crl *ca_crl,
JMF 12:0071cb144c7a 1890 const mbedtls_x509_crt_profile *profile,
JMF 12:0071cb144c7a 1891 int path_cnt, int self_cnt, uint32_t *flags,
JMF 12:0071cb144c7a 1892 int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
JMF 12:0071cb144c7a 1893 void *p_vrfy )
JMF 12:0071cb144c7a 1894 {
JMF 12:0071cb144c7a 1895 int ret;
JMF 12:0071cb144c7a 1896 uint32_t ca_flags = 0;
JMF 12:0071cb144c7a 1897 int check_path_cnt;
JMF 12:0071cb144c7a 1898 unsigned char hash[MBEDTLS_MD_MAX_SIZE];
JMF 12:0071cb144c7a 1899 const mbedtls_md_info_t *md_info;
JMF 12:0071cb144c7a 1900
JMF 12:0071cb144c7a 1901 if( mbedtls_x509_time_is_past( &child->valid_to ) )
JMF 12:0071cb144c7a 1902 *flags |= MBEDTLS_X509_BADCERT_EXPIRED;
JMF 12:0071cb144c7a 1903
JMF 12:0071cb144c7a 1904 if( mbedtls_x509_time_is_future( &child->valid_from ) )
JMF 12:0071cb144c7a 1905 *flags |= MBEDTLS_X509_BADCERT_FUTURE;
JMF 12:0071cb144c7a 1906
JMF 12:0071cb144c7a 1907 if( x509_profile_check_md_alg( profile, child->sig_md ) != 0 )
JMF 12:0071cb144c7a 1908 *flags |= MBEDTLS_X509_BADCERT_BAD_MD;
JMF 12:0071cb144c7a 1909
JMF 12:0071cb144c7a 1910 if( x509_profile_check_pk_alg( profile, child->sig_pk ) != 0 )
JMF 12:0071cb144c7a 1911 *flags |= MBEDTLS_X509_BADCERT_BAD_PK;
JMF 12:0071cb144c7a 1912
JMF 12:0071cb144c7a 1913 /*
JMF 12:0071cb144c7a 1914 * Child is the top of the chain. Check against the trust_ca list.
JMF 12:0071cb144c7a 1915 */
JMF 12:0071cb144c7a 1916 *flags |= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
JMF 12:0071cb144c7a 1917
JMF 12:0071cb144c7a 1918 md_info = mbedtls_md_info_from_type( child->sig_md );
JMF 12:0071cb144c7a 1919 if( md_info == NULL )
JMF 12:0071cb144c7a 1920 {
JMF 12:0071cb144c7a 1921 /*
JMF 12:0071cb144c7a 1922 * Cannot check 'unknown', no need to try any CA
JMF 12:0071cb144c7a 1923 */
JMF 12:0071cb144c7a 1924 trust_ca = NULL;
JMF 12:0071cb144c7a 1925 }
JMF 12:0071cb144c7a 1926 else
JMF 12:0071cb144c7a 1927 mbedtls_md( md_info, child->tbs.p, child->tbs.len, hash );
JMF 12:0071cb144c7a 1928
JMF 12:0071cb144c7a 1929 for( /* trust_ca */ ; trust_ca != NULL; trust_ca = trust_ca->next )
JMF 12:0071cb144c7a 1930 {
JMF 12:0071cb144c7a 1931 if( x509_crt_check_parent( child, trust_ca, 1, path_cnt == 0 ) != 0 )
JMF 12:0071cb144c7a 1932 continue;
JMF 12:0071cb144c7a 1933
JMF 12:0071cb144c7a 1934 check_path_cnt = path_cnt + 1;
JMF 12:0071cb144c7a 1935
JMF 12:0071cb144c7a 1936 /*
JMF 12:0071cb144c7a 1937 * Reduce check_path_cnt to check against if top of the chain is
JMF 12:0071cb144c7a 1938 * the same as the trusted CA
JMF 12:0071cb144c7a 1939 */
JMF 12:0071cb144c7a 1940 if( child->subject_raw.len == trust_ca->subject_raw.len &&
JMF 12:0071cb144c7a 1941 memcmp( child->subject_raw.p, trust_ca->subject_raw.p,
JMF 12:0071cb144c7a 1942 child->issuer_raw.len ) == 0 )
JMF 12:0071cb144c7a 1943 {
JMF 12:0071cb144c7a 1944 check_path_cnt--;
JMF 12:0071cb144c7a 1945 }
JMF 12:0071cb144c7a 1946
JMF 12:0071cb144c7a 1947 /* Self signed certificates do not count towards the limit */
JMF 12:0071cb144c7a 1948 if( trust_ca->max_pathlen > 0 &&
JMF 12:0071cb144c7a 1949 trust_ca->max_pathlen < check_path_cnt - self_cnt )
JMF 12:0071cb144c7a 1950 {
JMF 12:0071cb144c7a 1951 continue;
JMF 12:0071cb144c7a 1952 }
JMF 12:0071cb144c7a 1953
JMF 12:0071cb144c7a 1954 if( mbedtls_x509_time_is_past( &trust_ca->valid_to ) )
JMF 12:0071cb144c7a 1955 {
JMF 12:0071cb144c7a 1956 continue;
JMF 12:0071cb144c7a 1957 }
JMF 12:0071cb144c7a 1958
JMF 12:0071cb144c7a 1959 if( mbedtls_x509_time_is_future( &trust_ca->valid_from ) )
JMF 12:0071cb144c7a 1960 {
JMF 12:0071cb144c7a 1961 continue;
JMF 12:0071cb144c7a 1962 }
JMF 12:0071cb144c7a 1963
JMF 12:0071cb144c7a 1964 if( mbedtls_pk_verify_ext( child->sig_pk, child->sig_opts, &trust_ca->pk,
JMF 12:0071cb144c7a 1965 child->sig_md, hash, mbedtls_md_get_size( md_info ),
JMF 12:0071cb144c7a 1966 child->sig.p, child->sig.len ) != 0 )
JMF 12:0071cb144c7a 1967 {
JMF 12:0071cb144c7a 1968 continue;
JMF 12:0071cb144c7a 1969 }
JMF 12:0071cb144c7a 1970
JMF 12:0071cb144c7a 1971 /*
JMF 12:0071cb144c7a 1972 * Top of chain is signed by a trusted CA
JMF 12:0071cb144c7a 1973 */
JMF 12:0071cb144c7a 1974 *flags &= ~MBEDTLS_X509_BADCERT_NOT_TRUSTED;
JMF 12:0071cb144c7a 1975
JMF 12:0071cb144c7a 1976 if( x509_profile_check_key( profile, child->sig_pk, &trust_ca->pk ) != 0 )
JMF 12:0071cb144c7a 1977 *flags |= MBEDTLS_X509_BADCERT_BAD_KEY;
JMF 12:0071cb144c7a 1978
JMF 12:0071cb144c7a 1979 break;
JMF 12:0071cb144c7a 1980 }
JMF 12:0071cb144c7a 1981
JMF 12:0071cb144c7a 1982 /*
JMF 12:0071cb144c7a 1983 * If top of chain is not the same as the trusted CA send a verify request
JMF 12:0071cb144c7a 1984 * to the callback for any issues with validity and CRL presence for the
JMF 12:0071cb144c7a 1985 * trusted CA certificate.
JMF 12:0071cb144c7a 1986 */
JMF 12:0071cb144c7a 1987 if( trust_ca != NULL &&
JMF 12:0071cb144c7a 1988 ( child->subject_raw.len != trust_ca->subject_raw.len ||
JMF 12:0071cb144c7a 1989 memcmp( child->subject_raw.p, trust_ca->subject_raw.p,
JMF 12:0071cb144c7a 1990 child->issuer_raw.len ) != 0 ) )
JMF 12:0071cb144c7a 1991 {
JMF 12:0071cb144c7a 1992 #if defined(MBEDTLS_X509_CRL_PARSE_C)
JMF 12:0071cb144c7a 1993 /* Check trusted CA's CRL for the chain's top crt */
JMF 12:0071cb144c7a 1994 *flags |= x509_crt_verifycrl( child, trust_ca, ca_crl, profile );
JMF 12:0071cb144c7a 1995 #else
JMF 12:0071cb144c7a 1996 ((void) ca_crl);
JMF 12:0071cb144c7a 1997 #endif
JMF 12:0071cb144c7a 1998
JMF 12:0071cb144c7a 1999 if( NULL != f_vrfy )
JMF 12:0071cb144c7a 2000 {
JMF 12:0071cb144c7a 2001 if( ( ret = f_vrfy( p_vrfy, trust_ca, path_cnt + 1,
JMF 12:0071cb144c7a 2002 &ca_flags ) ) != 0 )
JMF 12:0071cb144c7a 2003 {
JMF 12:0071cb144c7a 2004 return( ret );
JMF 12:0071cb144c7a 2005 }
JMF 12:0071cb144c7a 2006 }
JMF 12:0071cb144c7a 2007 }
JMF 12:0071cb144c7a 2008
JMF 12:0071cb144c7a 2009 /* Call callback on top cert */
JMF 12:0071cb144c7a 2010 if( NULL != f_vrfy )
JMF 12:0071cb144c7a 2011 {
JMF 12:0071cb144c7a 2012 if( ( ret = f_vrfy( p_vrfy, child, path_cnt, flags ) ) != 0 )
JMF 12:0071cb144c7a 2013 return( ret );
JMF 12:0071cb144c7a 2014 }
JMF 12:0071cb144c7a 2015
JMF 12:0071cb144c7a 2016 *flags |= ca_flags;
JMF 12:0071cb144c7a 2017
JMF 12:0071cb144c7a 2018 return( 0 );
JMF 12:0071cb144c7a 2019 }
JMF 12:0071cb144c7a 2020
JMF 12:0071cb144c7a 2021 static int x509_crt_verify_child(
JMF 12:0071cb144c7a 2022 mbedtls_x509_crt *child, mbedtls_x509_crt *parent,
JMF 12:0071cb144c7a 2023 mbedtls_x509_crt *trust_ca, mbedtls_x509_crl *ca_crl,
JMF 12:0071cb144c7a 2024 const mbedtls_x509_crt_profile *profile,
JMF 12:0071cb144c7a 2025 int path_cnt, int self_cnt, uint32_t *flags,
JMF 12:0071cb144c7a 2026 int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
JMF 12:0071cb144c7a 2027 void *p_vrfy )
JMF 12:0071cb144c7a 2028 {
JMF 12:0071cb144c7a 2029 int ret;
JMF 12:0071cb144c7a 2030 uint32_t parent_flags = 0;
JMF 12:0071cb144c7a 2031 unsigned char hash[MBEDTLS_MD_MAX_SIZE];
JMF 12:0071cb144c7a 2032 mbedtls_x509_crt *grandparent;
JMF 12:0071cb144c7a 2033 const mbedtls_md_info_t *md_info;
JMF 12:0071cb144c7a 2034
JMF 12:0071cb144c7a 2035 /* Counting intermediate self signed certificates */
JMF 12:0071cb144c7a 2036 if( ( path_cnt != 0 ) && x509_name_cmp( &child->issuer, &child->subject ) == 0 )
JMF 12:0071cb144c7a 2037 self_cnt++;
JMF 12:0071cb144c7a 2038
JMF 12:0071cb144c7a 2039 /* path_cnt is 0 for the first intermediate CA */
JMF 12:0071cb144c7a 2040 if( 1 + path_cnt > MBEDTLS_X509_MAX_INTERMEDIATE_CA )
JMF 12:0071cb144c7a 2041 {
JMF 12:0071cb144c7a 2042 *flags |= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
JMF 12:0071cb144c7a 2043 return( MBEDTLS_ERR_X509_CERT_VERIFY_FAILED );
JMF 12:0071cb144c7a 2044 }
JMF 12:0071cb144c7a 2045
JMF 12:0071cb144c7a 2046 if( mbedtls_x509_time_is_past( &child->valid_to ) )
JMF 12:0071cb144c7a 2047 *flags |= MBEDTLS_X509_BADCERT_EXPIRED;
JMF 12:0071cb144c7a 2048
JMF 12:0071cb144c7a 2049 if( mbedtls_x509_time_is_future( &child->valid_from ) )
JMF 12:0071cb144c7a 2050 *flags |= MBEDTLS_X509_BADCERT_FUTURE;
JMF 12:0071cb144c7a 2051
JMF 12:0071cb144c7a 2052 if( x509_profile_check_md_alg( profile, child->sig_md ) != 0 )
JMF 12:0071cb144c7a 2053 *flags |= MBEDTLS_X509_BADCERT_BAD_MD;
JMF 12:0071cb144c7a 2054
JMF 12:0071cb144c7a 2055 if( x509_profile_check_pk_alg( profile, child->sig_pk ) != 0 )
JMF 12:0071cb144c7a 2056 *flags |= MBEDTLS_X509_BADCERT_BAD_PK;
JMF 12:0071cb144c7a 2057
JMF 12:0071cb144c7a 2058 md_info = mbedtls_md_info_from_type( child->sig_md );
JMF 12:0071cb144c7a 2059 if( md_info == NULL )
JMF 12:0071cb144c7a 2060 {
JMF 12:0071cb144c7a 2061 /*
JMF 12:0071cb144c7a 2062 * Cannot check 'unknown' hash
JMF 12:0071cb144c7a 2063 */
JMF 12:0071cb144c7a 2064 *flags |= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
JMF 12:0071cb144c7a 2065 }
JMF 12:0071cb144c7a 2066 else
JMF 12:0071cb144c7a 2067 {
JMF 12:0071cb144c7a 2068 mbedtls_md( md_info, child->tbs.p, child->tbs.len, hash );
JMF 12:0071cb144c7a 2069
JMF 12:0071cb144c7a 2070 if( x509_profile_check_key( profile, child->sig_pk, &parent->pk ) != 0 )
JMF 12:0071cb144c7a 2071 *flags |= MBEDTLS_X509_BADCERT_BAD_KEY;
JMF 12:0071cb144c7a 2072
JMF 12:0071cb144c7a 2073 if( mbedtls_pk_verify_ext( child->sig_pk, child->sig_opts, &parent->pk,
JMF 12:0071cb144c7a 2074 child->sig_md, hash, mbedtls_md_get_size( md_info ),
JMF 12:0071cb144c7a 2075 child->sig.p, child->sig.len ) != 0 )
JMF 12:0071cb144c7a 2076 {
JMF 12:0071cb144c7a 2077 *flags |= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
JMF 12:0071cb144c7a 2078 }
JMF 12:0071cb144c7a 2079 }
JMF 12:0071cb144c7a 2080
JMF 12:0071cb144c7a 2081 #if defined(MBEDTLS_X509_CRL_PARSE_C)
JMF 12:0071cb144c7a 2082 /* Check trusted CA's CRL for the given crt */
JMF 12:0071cb144c7a 2083 *flags |= x509_crt_verifycrl(child, parent, ca_crl, profile );
JMF 12:0071cb144c7a 2084 #endif
JMF 12:0071cb144c7a 2085
JMF 12:0071cb144c7a 2086 /* Look for a grandparent in trusted CAs */
JMF 12:0071cb144c7a 2087 for( grandparent = trust_ca;
JMF 12:0071cb144c7a 2088 grandparent != NULL;
JMF 12:0071cb144c7a 2089 grandparent = grandparent->next )
JMF 12:0071cb144c7a 2090 {
JMF 12:0071cb144c7a 2091 if( x509_crt_check_parent( parent, grandparent,
JMF 12:0071cb144c7a 2092 0, path_cnt == 0 ) == 0 )
JMF 12:0071cb144c7a 2093 break;
JMF 12:0071cb144c7a 2094 }
JMF 12:0071cb144c7a 2095
JMF 12:0071cb144c7a 2096 if( grandparent != NULL )
JMF 12:0071cb144c7a 2097 {
JMF 12:0071cb144c7a 2098 ret = x509_crt_verify_top( parent, grandparent, ca_crl, profile,
JMF 12:0071cb144c7a 2099 path_cnt + 1, self_cnt, &parent_flags, f_vrfy, p_vrfy );
JMF 12:0071cb144c7a 2100 if( ret != 0 )
JMF 12:0071cb144c7a 2101 return( ret );
JMF 12:0071cb144c7a 2102 }
JMF 12:0071cb144c7a 2103 else
JMF 12:0071cb144c7a 2104 {
JMF 12:0071cb144c7a 2105 /* Look for a grandparent upwards the chain */
JMF 12:0071cb144c7a 2106 for( grandparent = parent->next;
JMF 12:0071cb144c7a 2107 grandparent != NULL;
JMF 12:0071cb144c7a 2108 grandparent = grandparent->next )
JMF 12:0071cb144c7a 2109 {
JMF 12:0071cb144c7a 2110 /* +2 because the current step is not yet accounted for
JMF 12:0071cb144c7a 2111 * and because max_pathlen is one higher than it should be.
JMF 12:0071cb144c7a 2112 * Also self signed certificates do not count to the limit. */
JMF 12:0071cb144c7a 2113 if( grandparent->max_pathlen > 0 &&
JMF 12:0071cb144c7a 2114 grandparent->max_pathlen < 2 + path_cnt - self_cnt )
JMF 12:0071cb144c7a 2115 {
JMF 12:0071cb144c7a 2116 continue;
JMF 12:0071cb144c7a 2117 }
JMF 12:0071cb144c7a 2118
JMF 12:0071cb144c7a 2119 if( x509_crt_check_parent( parent, grandparent,
JMF 12:0071cb144c7a 2120 0, path_cnt == 0 ) == 0 )
JMF 12:0071cb144c7a 2121 break;
JMF 12:0071cb144c7a 2122 }
JMF 12:0071cb144c7a 2123
JMF 12:0071cb144c7a 2124 /* Is our parent part of the chain or at the top? */
JMF 12:0071cb144c7a 2125 if( grandparent != NULL )
JMF 12:0071cb144c7a 2126 {
JMF 12:0071cb144c7a 2127 ret = x509_crt_verify_child( parent, grandparent, trust_ca, ca_crl,
JMF 12:0071cb144c7a 2128 profile, path_cnt + 1, self_cnt, &parent_flags,
JMF 12:0071cb144c7a 2129 f_vrfy, p_vrfy );
JMF 12:0071cb144c7a 2130 if( ret != 0 )
JMF 12:0071cb144c7a 2131 return( ret );
JMF 12:0071cb144c7a 2132 }
JMF 12:0071cb144c7a 2133 else
JMF 12:0071cb144c7a 2134 {
JMF 12:0071cb144c7a 2135 ret = x509_crt_verify_top( parent, trust_ca, ca_crl, profile,
JMF 12:0071cb144c7a 2136 path_cnt + 1, self_cnt, &parent_flags,
JMF 12:0071cb144c7a 2137 f_vrfy, p_vrfy );
JMF 12:0071cb144c7a 2138 if( ret != 0 )
JMF 12:0071cb144c7a 2139 return( ret );
JMF 12:0071cb144c7a 2140 }
JMF 12:0071cb144c7a 2141 }
JMF 12:0071cb144c7a 2142
JMF 12:0071cb144c7a 2143 /* child is verified to be a child of the parent, call verify callback */
JMF 12:0071cb144c7a 2144 if( NULL != f_vrfy )
JMF 12:0071cb144c7a 2145 if( ( ret = f_vrfy( p_vrfy, child, path_cnt, flags ) ) != 0 )
JMF 12:0071cb144c7a 2146 return( ret );
JMF 12:0071cb144c7a 2147
JMF 12:0071cb144c7a 2148 *flags |= parent_flags;
JMF 12:0071cb144c7a 2149
JMF 12:0071cb144c7a 2150 return( 0 );
JMF 12:0071cb144c7a 2151 }
JMF 12:0071cb144c7a 2152
JMF 12:0071cb144c7a 2153 /*
JMF 12:0071cb144c7a 2154 * Verify the certificate validity
JMF 12:0071cb144c7a 2155 */
JMF 12:0071cb144c7a 2156 int mbedtls_x509_crt_verify( mbedtls_x509_crt *crt,
JMF 12:0071cb144c7a 2157 mbedtls_x509_crt *trust_ca,
JMF 12:0071cb144c7a 2158 mbedtls_x509_crl *ca_crl,
JMF 12:0071cb144c7a 2159 const char *cn, uint32_t *flags,
JMF 12:0071cb144c7a 2160 int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
JMF 12:0071cb144c7a 2161 void *p_vrfy )
JMF 12:0071cb144c7a 2162 {
JMF 12:0071cb144c7a 2163 return( mbedtls_x509_crt_verify_with_profile( crt, trust_ca, ca_crl,
JMF 12:0071cb144c7a 2164 &mbedtls_x509_crt_profile_default, cn, flags, f_vrfy, p_vrfy ) );
JMF 12:0071cb144c7a 2165 }
JMF 12:0071cb144c7a 2166
JMF 12:0071cb144c7a 2167
JMF 12:0071cb144c7a 2168 /*
JMF 12:0071cb144c7a 2169 * Verify the certificate validity, with profile
JMF 12:0071cb144c7a 2170 */
JMF 12:0071cb144c7a 2171 int mbedtls_x509_crt_verify_with_profile( mbedtls_x509_crt *crt,
JMF 12:0071cb144c7a 2172 mbedtls_x509_crt *trust_ca,
JMF 12:0071cb144c7a 2173 mbedtls_x509_crl *ca_crl,
JMF 12:0071cb144c7a 2174 const mbedtls_x509_crt_profile *profile,
JMF 12:0071cb144c7a 2175 const char *cn, uint32_t *flags,
JMF 12:0071cb144c7a 2176 int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
JMF 12:0071cb144c7a 2177 void *p_vrfy )
JMF 12:0071cb144c7a 2178 {
JMF 12:0071cb144c7a 2179 size_t cn_len;
JMF 12:0071cb144c7a 2180 int ret;
JMF 12:0071cb144c7a 2181 int pathlen = 0, selfsigned = 0;
JMF 12:0071cb144c7a 2182 mbedtls_x509_crt *parent;
JMF 12:0071cb144c7a 2183 mbedtls_x509_name *name;
JMF 12:0071cb144c7a 2184 mbedtls_x509_sequence *cur = NULL;
JMF 12:0071cb144c7a 2185 mbedtls_pk_type_t pk_type;
JMF 12:0071cb144c7a 2186
JMF 12:0071cb144c7a 2187 if( profile == NULL )
JMF 12:0071cb144c7a 2188 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 2189
JMF 12:0071cb144c7a 2190 *flags = 0;
JMF 12:0071cb144c7a 2191
JMF 12:0071cb144c7a 2192 if( cn != NULL )
JMF 12:0071cb144c7a 2193 {
JMF 12:0071cb144c7a 2194 name = &crt->subject;
JMF 12:0071cb144c7a 2195 cn_len = strlen( cn );
JMF 12:0071cb144c7a 2196
JMF 12:0071cb144c7a 2197 if( crt->ext_types & MBEDTLS_X509_EXT_SUBJECT_ALT_NAME )
JMF 12:0071cb144c7a 2198 {
JMF 12:0071cb144c7a 2199 cur = &crt->subject_alt_names;
JMF 12:0071cb144c7a 2200
JMF 12:0071cb144c7a 2201 while( cur != NULL )
JMF 12:0071cb144c7a 2202 {
JMF 12:0071cb144c7a 2203 if( cur->buf.len == cn_len &&
JMF 12:0071cb144c7a 2204 x509_memcasecmp( cn, cur->buf.p, cn_len ) == 0 )
JMF 12:0071cb144c7a 2205 break;
JMF 12:0071cb144c7a 2206
JMF 12:0071cb144c7a 2207 if( cur->buf.len > 2 &&
JMF 12:0071cb144c7a 2208 memcmp( cur->buf.p, "*.", 2 ) == 0 &&
JMF 12:0071cb144c7a 2209 x509_check_wildcard( cn, &cur->buf ) == 0 )
JMF 12:0071cb144c7a 2210 {
JMF 12:0071cb144c7a 2211 break;
JMF 12:0071cb144c7a 2212 }
JMF 12:0071cb144c7a 2213
JMF 12:0071cb144c7a 2214 cur = cur->next;
JMF 12:0071cb144c7a 2215 }
JMF 12:0071cb144c7a 2216
JMF 12:0071cb144c7a 2217 if( cur == NULL )
JMF 12:0071cb144c7a 2218 *flags |= MBEDTLS_X509_BADCERT_CN_MISMATCH;
JMF 12:0071cb144c7a 2219 }
JMF 12:0071cb144c7a 2220 else
JMF 12:0071cb144c7a 2221 {
JMF 12:0071cb144c7a 2222 while( name != NULL )
JMF 12:0071cb144c7a 2223 {
JMF 12:0071cb144c7a 2224 if( MBEDTLS_OID_CMP( MBEDTLS_OID_AT_CN, &name->oid ) == 0 )
JMF 12:0071cb144c7a 2225 {
JMF 12:0071cb144c7a 2226 if( name->val.len == cn_len &&
JMF 12:0071cb144c7a 2227 x509_memcasecmp( name->val.p, cn, cn_len ) == 0 )
JMF 12:0071cb144c7a 2228 break;
JMF 12:0071cb144c7a 2229
JMF 12:0071cb144c7a 2230 if( name->val.len > 2 &&
JMF 12:0071cb144c7a 2231 memcmp( name->val.p, "*.", 2 ) == 0 &&
JMF 12:0071cb144c7a 2232 x509_check_wildcard( cn, &name->val ) == 0 )
JMF 12:0071cb144c7a 2233 break;
JMF 12:0071cb144c7a 2234 }
JMF 12:0071cb144c7a 2235
JMF 12:0071cb144c7a 2236 name = name->next;
JMF 12:0071cb144c7a 2237 }
JMF 12:0071cb144c7a 2238
JMF 12:0071cb144c7a 2239 if( name == NULL )
JMF 12:0071cb144c7a 2240 *flags |= MBEDTLS_X509_BADCERT_CN_MISMATCH;
JMF 12:0071cb144c7a 2241 }
JMF 12:0071cb144c7a 2242 }
JMF 12:0071cb144c7a 2243
JMF 12:0071cb144c7a 2244 /* Check the type and size of the key */
JMF 12:0071cb144c7a 2245 pk_type = mbedtls_pk_get_type( &crt->pk );
JMF 12:0071cb144c7a 2246
JMF 12:0071cb144c7a 2247 if( x509_profile_check_pk_alg( profile, pk_type ) != 0 )
JMF 12:0071cb144c7a 2248 *flags |= MBEDTLS_X509_BADCERT_BAD_PK;
JMF 12:0071cb144c7a 2249
JMF 12:0071cb144c7a 2250 if( x509_profile_check_key( profile, pk_type, &crt->pk ) != 0 )
JMF 12:0071cb144c7a 2251 *flags |= MBEDTLS_X509_BADCERT_BAD_KEY;
JMF 12:0071cb144c7a 2252
JMF 12:0071cb144c7a 2253 /* Look for a parent in trusted CAs */
JMF 12:0071cb144c7a 2254 for( parent = trust_ca; parent != NULL; parent = parent->next )
JMF 12:0071cb144c7a 2255 {
JMF 12:0071cb144c7a 2256 if( x509_crt_check_parent( crt, parent, 0, pathlen == 0 ) == 0 )
JMF 12:0071cb144c7a 2257 break;
JMF 12:0071cb144c7a 2258 }
JMF 12:0071cb144c7a 2259
JMF 12:0071cb144c7a 2260 if( parent != NULL )
JMF 12:0071cb144c7a 2261 {
JMF 12:0071cb144c7a 2262 ret = x509_crt_verify_top( crt, parent, ca_crl, profile,
JMF 12:0071cb144c7a 2263 pathlen, selfsigned, flags, f_vrfy, p_vrfy );
JMF 12:0071cb144c7a 2264 if( ret != 0 )
JMF 12:0071cb144c7a 2265 return( ret );
JMF 12:0071cb144c7a 2266 }
JMF 12:0071cb144c7a 2267 else
JMF 12:0071cb144c7a 2268 {
JMF 12:0071cb144c7a 2269 /* Look for a parent upwards the chain */
JMF 12:0071cb144c7a 2270 for( parent = crt->next; parent != NULL; parent = parent->next )
JMF 12:0071cb144c7a 2271 if( x509_crt_check_parent( crt, parent, 0, pathlen == 0 ) == 0 )
JMF 12:0071cb144c7a 2272 break;
JMF 12:0071cb144c7a 2273
JMF 12:0071cb144c7a 2274 /* Are we part of the chain or at the top? */
JMF 12:0071cb144c7a 2275 if( parent != NULL )
JMF 12:0071cb144c7a 2276 {
JMF 12:0071cb144c7a 2277 ret = x509_crt_verify_child( crt, parent, trust_ca, ca_crl, profile,
JMF 12:0071cb144c7a 2278 pathlen, selfsigned, flags, f_vrfy, p_vrfy );
JMF 12:0071cb144c7a 2279 if( ret != 0 )
JMF 12:0071cb144c7a 2280 return( ret );
JMF 12:0071cb144c7a 2281 }
JMF 12:0071cb144c7a 2282 else
JMF 12:0071cb144c7a 2283 {
JMF 12:0071cb144c7a 2284 ret = x509_crt_verify_top( crt, trust_ca, ca_crl, profile,
JMF 12:0071cb144c7a 2285 pathlen, selfsigned, flags, f_vrfy, p_vrfy );
JMF 12:0071cb144c7a 2286 if( ret != 0 )
JMF 12:0071cb144c7a 2287 return( ret );
JMF 12:0071cb144c7a 2288 }
JMF 12:0071cb144c7a 2289 }
JMF 12:0071cb144c7a 2290
JMF 12:0071cb144c7a 2291 if( *flags != 0 )
JMF 12:0071cb144c7a 2292 return( MBEDTLS_ERR_X509_CERT_VERIFY_FAILED );
JMF 12:0071cb144c7a 2293
JMF 12:0071cb144c7a 2294 return( 0 );
JMF 12:0071cb144c7a 2295 }
JMF 12:0071cb144c7a 2296
JMF 12:0071cb144c7a 2297 /*
JMF 12:0071cb144c7a 2298 * Initialize a certificate chain
JMF 12:0071cb144c7a 2299 */
JMF 12:0071cb144c7a 2300 void mbedtls_x509_crt_init( mbedtls_x509_crt *crt )
JMF 12:0071cb144c7a 2301 {
JMF 12:0071cb144c7a 2302 memset( crt, 0, sizeof(mbedtls_x509_crt) );
JMF 12:0071cb144c7a 2303 }
JMF 12:0071cb144c7a 2304
JMF 12:0071cb144c7a 2305 /*
JMF 12:0071cb144c7a 2306 * Unallocate all certificate data
JMF 12:0071cb144c7a 2307 */
JMF 12:0071cb144c7a 2308 void mbedtls_x509_crt_free( mbedtls_x509_crt *crt )
JMF 12:0071cb144c7a 2309 {
JMF 12:0071cb144c7a 2310 mbedtls_x509_crt *cert_cur = crt;
JMF 12:0071cb144c7a 2311 mbedtls_x509_crt *cert_prv;
JMF 12:0071cb144c7a 2312 mbedtls_x509_name *name_cur;
JMF 12:0071cb144c7a 2313 mbedtls_x509_name *name_prv;
JMF 12:0071cb144c7a 2314 mbedtls_x509_sequence *seq_cur;
JMF 12:0071cb144c7a 2315 mbedtls_x509_sequence *seq_prv;
JMF 12:0071cb144c7a 2316
JMF 12:0071cb144c7a 2317 if( crt == NULL )
JMF 12:0071cb144c7a 2318 return;
JMF 12:0071cb144c7a 2319
JMF 12:0071cb144c7a 2320 do
JMF 12:0071cb144c7a 2321 {
JMF 12:0071cb144c7a 2322 mbedtls_pk_free( &cert_cur->pk );
JMF 12:0071cb144c7a 2323
JMF 12:0071cb144c7a 2324 #if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
JMF 12:0071cb144c7a 2325 mbedtls_free( cert_cur->sig_opts );
JMF 12:0071cb144c7a 2326 #endif
JMF 12:0071cb144c7a 2327
JMF 12:0071cb144c7a 2328 name_cur = cert_cur->issuer.next;
JMF 12:0071cb144c7a 2329 while( name_cur != NULL )
JMF 12:0071cb144c7a 2330 {
JMF 12:0071cb144c7a 2331 name_prv = name_cur;
JMF 12:0071cb144c7a 2332 name_cur = name_cur->next;
JMF 12:0071cb144c7a 2333 mbedtls_zeroize( name_prv, sizeof( mbedtls_x509_name ) );
JMF 12:0071cb144c7a 2334 mbedtls_free( name_prv );
JMF 12:0071cb144c7a 2335 }
JMF 12:0071cb144c7a 2336
JMF 12:0071cb144c7a 2337 name_cur = cert_cur->subject.next;
JMF 12:0071cb144c7a 2338 while( name_cur != NULL )
JMF 12:0071cb144c7a 2339 {
JMF 12:0071cb144c7a 2340 name_prv = name_cur;
JMF 12:0071cb144c7a 2341 name_cur = name_cur->next;
JMF 12:0071cb144c7a 2342 mbedtls_zeroize( name_prv, sizeof( mbedtls_x509_name ) );
JMF 12:0071cb144c7a 2343 mbedtls_free( name_prv );
JMF 12:0071cb144c7a 2344 }
JMF 12:0071cb144c7a 2345
JMF 12:0071cb144c7a 2346 seq_cur = cert_cur->ext_key_usage.next;
JMF 12:0071cb144c7a 2347 while( seq_cur != NULL )
JMF 12:0071cb144c7a 2348 {
JMF 12:0071cb144c7a 2349 seq_prv = seq_cur;
JMF 12:0071cb144c7a 2350 seq_cur = seq_cur->next;
JMF 12:0071cb144c7a 2351 mbedtls_zeroize( seq_prv, sizeof( mbedtls_x509_sequence ) );
JMF 12:0071cb144c7a 2352 mbedtls_free( seq_prv );
JMF 12:0071cb144c7a 2353 }
JMF 12:0071cb144c7a 2354
JMF 12:0071cb144c7a 2355 seq_cur = cert_cur->subject_alt_names.next;
JMF 12:0071cb144c7a 2356 while( seq_cur != NULL )
JMF 12:0071cb144c7a 2357 {
JMF 12:0071cb144c7a 2358 seq_prv = seq_cur;
JMF 12:0071cb144c7a 2359 seq_cur = seq_cur->next;
JMF 12:0071cb144c7a 2360 mbedtls_zeroize( seq_prv, sizeof( mbedtls_x509_sequence ) );
JMF 12:0071cb144c7a 2361 mbedtls_free( seq_prv );
JMF 12:0071cb144c7a 2362 }
JMF 12:0071cb144c7a 2363
JMF 12:0071cb144c7a 2364 if( cert_cur->raw.p != NULL )
JMF 12:0071cb144c7a 2365 {
JMF 12:0071cb144c7a 2366 mbedtls_zeroize( cert_cur->raw.p, cert_cur->raw.len );
JMF 12:0071cb144c7a 2367 mbedtls_free( cert_cur->raw.p );
JMF 12:0071cb144c7a 2368 }
JMF 12:0071cb144c7a 2369
JMF 12:0071cb144c7a 2370 cert_cur = cert_cur->next;
JMF 12:0071cb144c7a 2371 }
JMF 12:0071cb144c7a 2372 while( cert_cur != NULL );
JMF 12:0071cb144c7a 2373
JMF 12:0071cb144c7a 2374 cert_cur = crt;
JMF 12:0071cb144c7a 2375 do
JMF 12:0071cb144c7a 2376 {
JMF 12:0071cb144c7a 2377 cert_prv = cert_cur;
JMF 12:0071cb144c7a 2378 cert_cur = cert_cur->next;
JMF 12:0071cb144c7a 2379
JMF 12:0071cb144c7a 2380 mbedtls_zeroize( cert_prv, sizeof( mbedtls_x509_crt ) );
JMF 12:0071cb144c7a 2381 if( cert_prv != crt )
JMF 12:0071cb144c7a 2382 mbedtls_free( cert_prv );
JMF 12:0071cb144c7a 2383 }
JMF 12:0071cb144c7a 2384 while( cert_cur != NULL );
JMF 12:0071cb144c7a 2385 }
JMF 12:0071cb144c7a 2386
JMF 12:0071cb144c7a 2387 #endif /* MBEDTLS_X509_CRT_PARSE_C */