Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1 | /* |
| 2 | * X.509 certificate and private key decoding |
| 3 | * |
Paul Bakker | b6c5d2e | 2013-06-25 16:25:17 +0200 | [diff] [blame] | 4 | * Copyright (C) 2006-2013, Brainspark B.V. |
Paul Bakker | b96f154 | 2010-07-18 20:36:00 +0000 | [diff] [blame] | 5 | * |
| 6 | * This file is part of PolarSSL (http://www.polarssl.org) |
Paul Bakker | 84f12b7 | 2010-07-18 10:13:04 +0000 | [diff] [blame] | 7 | * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> |
Paul Bakker | b96f154 | 2010-07-18 20:36:00 +0000 | [diff] [blame] | 8 | * |
Paul Bakker | 77b385e | 2009-07-28 17:23:11 +0000 | [diff] [blame] | 9 | * All rights reserved. |
Paul Bakker | e0ccd0a | 2009-01-04 16:27:10 +0000 | [diff] [blame] | 10 | * |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or |
| 14 | * (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License along |
| 22 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 23 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 24 | */ |
| 25 | /* |
Paul Bakker | ad8d354 | 2012-02-16 15:28:14 +0000 | [diff] [blame] | 26 | * The ITU-T X.509 standard defines a certificate format for PKI. |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 27 | * |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 28 | * http://www.ietf.org/rfc/rfc3279.txt |
Paul Bakker | ad8d354 | 2012-02-16 15:28:14 +0000 | [diff] [blame] | 29 | * http://www.ietf.org/rfc/rfc3280.txt |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 30 | * |
| 31 | * ftp://ftp.rsasecurity.com/pub/pkcs/ascii/pkcs-1v2.asc |
| 32 | * |
| 33 | * http://www.itu.int/ITU-T/studygroups/com17/languages/X.680-0207.pdf |
| 34 | * http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf |
| 35 | */ |
| 36 | |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 37 | #include "polarssl/config.h" |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 38 | |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 39 | #if defined(POLARSSL_X509_PARSE_C) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 40 | |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 41 | #include "polarssl/x509.h" |
Paul Bakker | efc3029 | 2011-11-10 14:43:23 +0000 | [diff] [blame] | 42 | #include "polarssl/asn1.h" |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 43 | #include "polarssl/oid.h" |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 44 | #include "polarssl/pem.h" |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 45 | #include "polarssl/dhm.h" |
Paul Bakker | 28144de | 2013-06-24 19:28:55 +0200 | [diff] [blame] | 46 | #if defined(POLARSSL_PKCS5_C) |
| 47 | #include "polarssl/pkcs5.h" |
| 48 | #endif |
Paul Bakker | 38b50d7 | 2013-06-24 19:33:27 +0200 | [diff] [blame] | 49 | #if defined(POLARSSL_PKCS12_C) |
| 50 | #include "polarssl/pkcs12.h" |
| 51 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 52 | |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 53 | #if defined(POLARSSL_MEMORY_C) |
| 54 | #include "polarssl/memory.h" |
| 55 | #else |
| 56 | #define polarssl_malloc malloc |
| 57 | #define polarssl_free free |
| 58 | #endif |
| 59 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 60 | #include <string.h> |
| 61 | #include <stdlib.h> |
Paul Bakker | 4f229e5 | 2011-12-04 22:11:35 +0000 | [diff] [blame] | 62 | #if defined(_WIN32) |
Paul Bakker | cce9d77 | 2011-11-18 14:26:47 +0000 | [diff] [blame] | 63 | #include <windows.h> |
| 64 | #else |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 65 | #include <time.h> |
Paul Bakker | cce9d77 | 2011-11-18 14:26:47 +0000 | [diff] [blame] | 66 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 67 | |
Paul Bakker | 335db3f | 2011-04-25 15:28:35 +0000 | [diff] [blame] | 68 | #if defined(POLARSSL_FS_IO) |
| 69 | #include <stdio.h> |
Paul Bakker | 4a2bd0d | 2012-11-02 11:06:08 +0000 | [diff] [blame] | 70 | #if !defined(_WIN32) |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 71 | #include <sys/types.h> |
Paul Bakker | 2c8cdd2 | 2013-06-24 19:22:42 +0200 | [diff] [blame] | 72 | #include <sys/stat.h> |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 73 | #include <dirent.h> |
| 74 | #endif |
Paul Bakker | 335db3f | 2011-04-25 15:28:35 +0000 | [diff] [blame] | 75 | #endif |
| 76 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 77 | /* |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 78 | * Version ::= INTEGER { v1(0), v2(1), v3(2) } |
| 79 | */ |
| 80 | static int x509_get_version( unsigned char **p, |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 81 | const unsigned char *end, |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 82 | int *ver ) |
| 83 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 84 | int ret; |
| 85 | size_t len; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 86 | |
| 87 | if( ( ret = asn1_get_tag( p, end, &len, |
| 88 | ASN1_CONTEXT_SPECIFIC | ASN1_CONSTRUCTED | 0 ) ) != 0 ) |
| 89 | { |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 90 | if( ret == POLARSSL_ERR_ASN1_UNEXPECTED_TAG ) |
Paul Bakker | 2a1c5f5 | 2011-10-19 14:15:17 +0000 | [diff] [blame] | 91 | { |
| 92 | *ver = 0; |
| 93 | return( 0 ); |
| 94 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 95 | |
| 96 | return( ret ); |
| 97 | } |
| 98 | |
| 99 | end = *p + len; |
| 100 | |
| 101 | if( ( ret = asn1_get_int( p, end, ver ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 102 | return( POLARSSL_ERR_X509_CERT_INVALID_VERSION + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 103 | |
| 104 | if( *p != end ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 105 | return( POLARSSL_ERR_X509_CERT_INVALID_VERSION + |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 106 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 107 | |
| 108 | return( 0 ); |
| 109 | } |
| 110 | |
| 111 | /* |
Paul Bakker | fae618f | 2011-10-12 11:53:52 +0000 | [diff] [blame] | 112 | * Version ::= INTEGER { v1(0), v2(1) } |
Paul Bakker | 3329d1f | 2011-10-12 09:55:01 +0000 | [diff] [blame] | 113 | */ |
| 114 | static int x509_crl_get_version( unsigned char **p, |
| 115 | const unsigned char *end, |
| 116 | int *ver ) |
| 117 | { |
| 118 | int ret; |
| 119 | |
| 120 | if( ( ret = asn1_get_int( p, end, ver ) ) != 0 ) |
| 121 | { |
| 122 | if( ret == POLARSSL_ERR_ASN1_UNEXPECTED_TAG ) |
Paul Bakker | 2a1c5f5 | 2011-10-19 14:15:17 +0000 | [diff] [blame] | 123 | { |
| 124 | *ver = 0; |
| 125 | return( 0 ); |
| 126 | } |
Paul Bakker | 3329d1f | 2011-10-12 09:55:01 +0000 | [diff] [blame] | 127 | |
| 128 | return( POLARSSL_ERR_X509_CERT_INVALID_VERSION + ret ); |
| 129 | } |
| 130 | |
| 131 | return( 0 ); |
| 132 | } |
| 133 | |
| 134 | /* |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 135 | * CertificateSerialNumber ::= INTEGER |
| 136 | */ |
| 137 | static int x509_get_serial( unsigned char **p, |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 138 | const unsigned char *end, |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 139 | x509_buf *serial ) |
| 140 | { |
| 141 | int ret; |
| 142 | |
| 143 | if( ( end - *p ) < 1 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 144 | return( POLARSSL_ERR_X509_CERT_INVALID_SERIAL + |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 145 | POLARSSL_ERR_ASN1_OUT_OF_DATA ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 146 | |
| 147 | if( **p != ( ASN1_CONTEXT_SPECIFIC | ASN1_PRIMITIVE | 2 ) && |
| 148 | **p != ASN1_INTEGER ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 149 | return( POLARSSL_ERR_X509_CERT_INVALID_SERIAL + |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 150 | POLARSSL_ERR_ASN1_UNEXPECTED_TAG ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 151 | |
| 152 | serial->tag = *(*p)++; |
| 153 | |
| 154 | if( ( ret = asn1_get_len( p, end, &serial->len ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 155 | return( POLARSSL_ERR_X509_CERT_INVALID_SERIAL + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 156 | |
| 157 | serial->p = *p; |
| 158 | *p += serial->len; |
| 159 | |
| 160 | return( 0 ); |
| 161 | } |
| 162 | |
Manuel Pégourié-Gonnard | a155513 | 2013-07-10 13:18:41 +0200 | [diff] [blame] | 163 | /* Get a PK algorithm identifier |
Manuel Pégourié-Gonnard | 0a64e8f | 2013-07-08 18:26:18 +0200 | [diff] [blame] | 164 | * |
| 165 | * AlgorithmIdentifier ::= SEQUENCE { |
| 166 | * algorithm OBJECT IDENTIFIER, |
| 167 | * parameters ANY DEFINED BY algorithm OPTIONAL } |
| 168 | */ |
Manuel Pégourié-Gonnard | 7a287c4 | 2013-07-10 12:55:08 +0200 | [diff] [blame] | 169 | static int x509_get_pk_alg( unsigned char **p, |
Manuel Pégourié-Gonnard | a155513 | 2013-07-10 13:18:41 +0200 | [diff] [blame] | 170 | const unsigned char *end, |
| 171 | pk_type_t *pk_alg, x509_buf *params ) |
Manuel Pégourié-Gonnard | 0a64e8f | 2013-07-08 18:26:18 +0200 | [diff] [blame] | 172 | { |
| 173 | int ret; |
| 174 | x509_buf alg_oid; |
| 175 | |
| 176 | memset( params, 0, sizeof(asn1_buf) ); |
| 177 | |
| 178 | if( ( ret = asn1_get_alg( p, end, &alg_oid, params ) ) != 0 ) |
| 179 | return( POLARSSL_ERR_X509_CERT_INVALID_ALG + ret ); |
| 180 | |
| 181 | if( oid_get_pk_alg( &alg_oid, pk_alg ) != 0 ) |
| 182 | return( POLARSSL_ERR_X509_UNKNOWN_PK_ALG ); |
| 183 | |
| 184 | /* |
| 185 | * No parameters with RSA (only for EC) |
| 186 | */ |
| 187 | if( *pk_alg == POLARSSL_PK_RSA && |
| 188 | ( ( params->tag != ASN1_NULL && params->tag != 0 ) || |
| 189 | params->len != 0 ) ) |
| 190 | { |
| 191 | return( POLARSSL_ERR_X509_CERT_INVALID_ALG ); |
| 192 | } |
| 193 | |
| 194 | return( 0 ); |
| 195 | } |
| 196 | |
Manuel Pégourié-Gonnard | a155513 | 2013-07-10 13:18:41 +0200 | [diff] [blame] | 197 | /* Get an algorithm identifier without parameters (eg for signatures) |
| 198 | * |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 199 | * AlgorithmIdentifier ::= SEQUENCE { |
| 200 | * algorithm OBJECT IDENTIFIER, |
| 201 | * parameters ANY DEFINED BY algorithm OPTIONAL } |
| 202 | */ |
Manuel Pégourié-Gonnard | a155513 | 2013-07-10 13:18:41 +0200 | [diff] [blame] | 203 | static int x509_get_alg_null( unsigned char **p, const unsigned char *end, |
| 204 | x509_buf *alg ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 205 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 206 | int ret; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 207 | |
Manuel Pégourié-Gonnard | a155513 | 2013-07-10 13:18:41 +0200 | [diff] [blame] | 208 | if( ( ret = asn1_get_alg_null( p, end, alg ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 209 | return( POLARSSL_ERR_X509_CERT_INVALID_ALG + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 210 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 211 | return( 0 ); |
| 212 | } |
| 213 | |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 214 | |
| 215 | #if defined(POLARSSL_ECP_C) |
Manuel Pégourié-Gonnard | f838eed | 2013-07-02 14:56:43 +0200 | [diff] [blame] | 216 | /* Get an EC group id from an ECParameters buffer |
| 217 | * |
| 218 | * ECParameters ::= CHOICE { |
| 219 | * namedCurve OBJECT IDENTIFIER |
| 220 | * -- implicitCurve NULL |
| 221 | * -- specifiedCurve SpecifiedECDomain |
| 222 | * } |
| 223 | */ |
| 224 | static int x509_get_ecparams( unsigned char **p, const unsigned char *end, |
Manuel Pégourié-Gonnard | 1c808a0 | 2013-07-11 13:17:43 +0200 | [diff] [blame] | 225 | x509_buf *params ) |
Manuel Pégourié-Gonnard | f838eed | 2013-07-02 14:56:43 +0200 | [diff] [blame] | 226 | { |
| 227 | int ret; |
Manuel Pégourié-Gonnard | f838eed | 2013-07-02 14:56:43 +0200 | [diff] [blame] | 228 | |
Manuel Pégourié-Gonnard | 1c808a0 | 2013-07-11 13:17:43 +0200 | [diff] [blame] | 229 | params->tag = **p; |
Manuel Pégourié-Gonnard | f838eed | 2013-07-02 14:56:43 +0200 | [diff] [blame] | 230 | |
Manuel Pégourié-Gonnard | 1c808a0 | 2013-07-11 13:17:43 +0200 | [diff] [blame] | 231 | if( ( ret = asn1_get_tag( p, end, ¶ms->len, ASN1_OID ) ) != 0 ) |
Manuel Pégourié-Gonnard | f838eed | 2013-07-02 14:56:43 +0200 | [diff] [blame] | 232 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
| 233 | |
Manuel Pégourié-Gonnard | 1c808a0 | 2013-07-11 13:17:43 +0200 | [diff] [blame] | 234 | params->p = *p; |
| 235 | *p += params->len; |
Manuel Pégourié-Gonnard | f838eed | 2013-07-02 14:56:43 +0200 | [diff] [blame] | 236 | |
| 237 | if( *p != end ) |
| 238 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + |
| 239 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
| 240 | |
Manuel Pégourié-Gonnard | 1c808a0 | 2013-07-11 13:17:43 +0200 | [diff] [blame] | 241 | return( 0 ); |
| 242 | } |
| 243 | |
| 244 | /* |
| 245 | * Use EC parameters to initialise an EC group |
| 246 | */ |
| 247 | static int x509_use_ecparams( const x509_buf *params, ecp_group *grp ) |
| 248 | { |
| 249 | int ret; |
| 250 | ecp_group_id grp_id; |
| 251 | |
| 252 | if( oid_get_ec_grp( params, &grp_id ) != 0 ) |
| 253 | return( POLARSSL_ERR_X509_UNKNOWN_NAMED_CURVE ); |
| 254 | |
| 255 | /* |
| 256 | * grp may already be initilialized; if so, make sure IDs match |
| 257 | */ |
| 258 | if( grp->id != POLARSSL_ECP_DP_NONE && grp->id != grp_id ) |
| 259 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT ); |
| 260 | |
| 261 | if( ( ret = ecp_use_known_dp( grp, grp_id ) ) != 0 ) |
| 262 | return( ret ); |
| 263 | |
| 264 | return( 0 ); |
Manuel Pégourié-Gonnard | f838eed | 2013-07-02 14:56:43 +0200 | [diff] [blame] | 265 | } |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 266 | #endif /* POLARSSL_ECP_C */ |
Manuel Pégourié-Gonnard | f838eed | 2013-07-02 14:56:43 +0200 | [diff] [blame] | 267 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 268 | /* |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 269 | * AttributeTypeAndValue ::= SEQUENCE { |
| 270 | * type AttributeType, |
| 271 | * value AttributeValue } |
| 272 | * |
| 273 | * AttributeType ::= OBJECT IDENTIFIER |
| 274 | * |
| 275 | * AttributeValue ::= ANY DEFINED BY AttributeType |
| 276 | */ |
Paul Bakker | 400ff6f | 2011-02-20 10:40:16 +0000 | [diff] [blame] | 277 | static int x509_get_attr_type_value( unsigned char **p, |
| 278 | const unsigned char *end, |
| 279 | x509_name *cur ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 280 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 281 | int ret; |
| 282 | size_t len; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 283 | x509_buf *oid; |
| 284 | x509_buf *val; |
| 285 | |
| 286 | if( ( ret = asn1_get_tag( p, end, &len, |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 287 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 288 | return( POLARSSL_ERR_X509_CERT_INVALID_NAME + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 289 | |
Manuel Pégourié-Gonnard | 686bfae | 2013-08-15 13:40:10 +0200 | [diff] [blame] | 290 | if( ( end - *p ) < 1 ) |
| 291 | return( POLARSSL_ERR_X509_CERT_INVALID_NAME + |
| 292 | POLARSSL_ERR_ASN1_OUT_OF_DATA ); |
| 293 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 294 | oid = &cur->oid; |
| 295 | oid->tag = **p; |
| 296 | |
| 297 | if( ( ret = asn1_get_tag( p, end, &oid->len, ASN1_OID ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 298 | return( POLARSSL_ERR_X509_CERT_INVALID_NAME + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 299 | |
| 300 | oid->p = *p; |
| 301 | *p += oid->len; |
| 302 | |
| 303 | if( ( end - *p ) < 1 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 304 | return( POLARSSL_ERR_X509_CERT_INVALID_NAME + |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 305 | POLARSSL_ERR_ASN1_OUT_OF_DATA ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 306 | |
| 307 | if( **p != ASN1_BMP_STRING && **p != ASN1_UTF8_STRING && |
| 308 | **p != ASN1_T61_STRING && **p != ASN1_PRINTABLE_STRING && |
| 309 | **p != ASN1_IA5_STRING && **p != ASN1_UNIVERSAL_STRING ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 310 | return( POLARSSL_ERR_X509_CERT_INVALID_NAME + |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 311 | POLARSSL_ERR_ASN1_UNEXPECTED_TAG ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 312 | |
| 313 | val = &cur->val; |
| 314 | val->tag = *(*p)++; |
| 315 | |
| 316 | if( ( ret = asn1_get_len( p, end, &val->len ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 317 | return( POLARSSL_ERR_X509_CERT_INVALID_NAME + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 318 | |
| 319 | val->p = *p; |
| 320 | *p += val->len; |
| 321 | |
| 322 | cur->next = NULL; |
| 323 | |
Paul Bakker | 400ff6f | 2011-02-20 10:40:16 +0000 | [diff] [blame] | 324 | return( 0 ); |
| 325 | } |
| 326 | |
| 327 | /* |
| 328 | * RelativeDistinguishedName ::= |
| 329 | * SET OF AttributeTypeAndValue |
| 330 | * |
| 331 | * AttributeTypeAndValue ::= SEQUENCE { |
| 332 | * type AttributeType, |
| 333 | * value AttributeValue } |
| 334 | * |
| 335 | * AttributeType ::= OBJECT IDENTIFIER |
| 336 | * |
| 337 | * AttributeValue ::= ANY DEFINED BY AttributeType |
| 338 | */ |
| 339 | static int x509_get_name( unsigned char **p, |
| 340 | const unsigned char *end, |
| 341 | x509_name *cur ) |
| 342 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 343 | int ret; |
| 344 | size_t len; |
Paul Bakker | 400ff6f | 2011-02-20 10:40:16 +0000 | [diff] [blame] | 345 | const unsigned char *end2; |
| 346 | x509_name *use; |
| 347 | |
| 348 | if( ( ret = asn1_get_tag( p, end, &len, |
| 349 | ASN1_CONSTRUCTED | ASN1_SET ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 350 | return( POLARSSL_ERR_X509_CERT_INVALID_NAME + ret ); |
Paul Bakker | 400ff6f | 2011-02-20 10:40:16 +0000 | [diff] [blame] | 351 | |
| 352 | end2 = end; |
| 353 | end = *p + len; |
| 354 | use = cur; |
| 355 | |
| 356 | do |
| 357 | { |
| 358 | if( ( ret = x509_get_attr_type_value( p, end, use ) ) != 0 ) |
| 359 | return( ret ); |
| 360 | |
| 361 | if( *p != end ) |
| 362 | { |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 363 | use->next = (x509_name *) polarssl_malloc( |
Paul Bakker | 400ff6f | 2011-02-20 10:40:16 +0000 | [diff] [blame] | 364 | sizeof( x509_name ) ); |
| 365 | |
| 366 | if( use->next == NULL ) |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 367 | return( POLARSSL_ERR_X509_MALLOC_FAILED ); |
Paul Bakker | 400ff6f | 2011-02-20 10:40:16 +0000 | [diff] [blame] | 368 | |
| 369 | memset( use->next, 0, sizeof( x509_name ) ); |
| 370 | |
| 371 | use = use->next; |
| 372 | } |
| 373 | } |
| 374 | while( *p != end ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 375 | |
| 376 | /* |
| 377 | * recurse until end of SEQUENCE is reached |
| 378 | */ |
| 379 | if( *p == end2 ) |
| 380 | return( 0 ); |
| 381 | |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 382 | cur->next = (x509_name *) polarssl_malloc( |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 383 | sizeof( x509_name ) ); |
| 384 | |
| 385 | if( cur->next == NULL ) |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 386 | return( POLARSSL_ERR_X509_MALLOC_FAILED ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 387 | |
Paul Bakker | 430ffbe | 2012-05-01 08:14:20 +0000 | [diff] [blame] | 388 | memset( cur->next, 0, sizeof( x509_name ) ); |
| 389 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 390 | return( x509_get_name( p, end2, cur->next ) ); |
| 391 | } |
| 392 | |
| 393 | /* |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 394 | * Time ::= CHOICE { |
| 395 | * utcTime UTCTime, |
| 396 | * generalTime GeneralizedTime } |
| 397 | */ |
Paul Bakker | 9120018 | 2010-02-18 21:26:15 +0000 | [diff] [blame] | 398 | static int x509_get_time( unsigned char **p, |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 399 | const unsigned char *end, |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 400 | x509_time *time ) |
| 401 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 402 | int ret; |
| 403 | size_t len; |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 404 | char date[64]; |
Paul Bakker | 9120018 | 2010-02-18 21:26:15 +0000 | [diff] [blame] | 405 | unsigned char tag; |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 406 | |
Paul Bakker | 9120018 | 2010-02-18 21:26:15 +0000 | [diff] [blame] | 407 | if( ( end - *p ) < 1 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 408 | return( POLARSSL_ERR_X509_CERT_INVALID_DATE + |
| 409 | POLARSSL_ERR_ASN1_OUT_OF_DATA ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 410 | |
Paul Bakker | 9120018 | 2010-02-18 21:26:15 +0000 | [diff] [blame] | 411 | tag = **p; |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 412 | |
Paul Bakker | 9120018 | 2010-02-18 21:26:15 +0000 | [diff] [blame] | 413 | if ( tag == ASN1_UTC_TIME ) |
| 414 | { |
| 415 | (*p)++; |
| 416 | ret = asn1_get_len( p, end, &len ); |
| 417 | |
| 418 | if( ret != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 419 | return( POLARSSL_ERR_X509_CERT_INVALID_DATE + ret ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 420 | |
Paul Bakker | 9120018 | 2010-02-18 21:26:15 +0000 | [diff] [blame] | 421 | memset( date, 0, sizeof( date ) ); |
Paul Bakker | 27fdf46 | 2011-06-09 13:55:13 +0000 | [diff] [blame] | 422 | memcpy( date, *p, ( len < sizeof( date ) - 1 ) ? |
| 423 | len : sizeof( date ) - 1 ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 424 | |
Paul Bakker | 9120018 | 2010-02-18 21:26:15 +0000 | [diff] [blame] | 425 | if( sscanf( date, "%2d%2d%2d%2d%2d%2d", |
| 426 | &time->year, &time->mon, &time->day, |
| 427 | &time->hour, &time->min, &time->sec ) < 5 ) |
| 428 | return( POLARSSL_ERR_X509_CERT_INVALID_DATE ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 429 | |
Paul Bakker | 400ff6f | 2011-02-20 10:40:16 +0000 | [diff] [blame] | 430 | time->year += 100 * ( time->year < 50 ); |
Paul Bakker | 9120018 | 2010-02-18 21:26:15 +0000 | [diff] [blame] | 431 | time->year += 1900; |
| 432 | |
| 433 | *p += len; |
| 434 | |
| 435 | return( 0 ); |
| 436 | } |
| 437 | else if ( tag == ASN1_GENERALIZED_TIME ) |
| 438 | { |
| 439 | (*p)++; |
| 440 | ret = asn1_get_len( p, end, &len ); |
| 441 | |
| 442 | if( ret != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 443 | return( POLARSSL_ERR_X509_CERT_INVALID_DATE + ret ); |
Paul Bakker | 9120018 | 2010-02-18 21:26:15 +0000 | [diff] [blame] | 444 | |
| 445 | memset( date, 0, sizeof( date ) ); |
Paul Bakker | 27fdf46 | 2011-06-09 13:55:13 +0000 | [diff] [blame] | 446 | memcpy( date, *p, ( len < sizeof( date ) - 1 ) ? |
| 447 | len : sizeof( date ) - 1 ); |
Paul Bakker | 9120018 | 2010-02-18 21:26:15 +0000 | [diff] [blame] | 448 | |
| 449 | if( sscanf( date, "%4d%2d%2d%2d%2d%2d", |
| 450 | &time->year, &time->mon, &time->day, |
| 451 | &time->hour, &time->min, &time->sec ) < 5 ) |
| 452 | return( POLARSSL_ERR_X509_CERT_INVALID_DATE ); |
| 453 | |
| 454 | *p += len; |
| 455 | |
| 456 | return( 0 ); |
| 457 | } |
| 458 | else |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 459 | return( POLARSSL_ERR_X509_CERT_INVALID_DATE + POLARSSL_ERR_ASN1_UNEXPECTED_TAG ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 460 | } |
| 461 | |
| 462 | |
| 463 | /* |
| 464 | * Validity ::= SEQUENCE { |
| 465 | * notBefore Time, |
| 466 | * notAfter Time } |
| 467 | */ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 468 | static int x509_get_dates( unsigned char **p, |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 469 | const unsigned char *end, |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 470 | x509_time *from, |
| 471 | x509_time *to ) |
| 472 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 473 | int ret; |
| 474 | size_t len; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 475 | |
| 476 | if( ( ret = asn1_get_tag( p, end, &len, |
| 477 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 478 | return( POLARSSL_ERR_X509_CERT_INVALID_DATE + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 479 | |
| 480 | end = *p + len; |
| 481 | |
Paul Bakker | 9120018 | 2010-02-18 21:26:15 +0000 | [diff] [blame] | 482 | if( ( ret = x509_get_time( p, end, from ) ) != 0 ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 483 | return( ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 484 | |
Paul Bakker | 9120018 | 2010-02-18 21:26:15 +0000 | [diff] [blame] | 485 | if( ( ret = x509_get_time( p, end, to ) ) != 0 ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 486 | return( ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 487 | |
| 488 | if( *p != end ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 489 | return( POLARSSL_ERR_X509_CERT_INVALID_DATE + |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 490 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 491 | |
| 492 | return( 0 ); |
| 493 | } |
| 494 | |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 495 | #if defined(POLARSSL_RSA_C) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 496 | /* |
Manuel Pégourié-Gonnard | 094ad9e | 2013-07-09 12:32:51 +0200 | [diff] [blame] | 497 | * RSAPublicKey ::= SEQUENCE { |
| 498 | * modulus INTEGER, -- n |
| 499 | * publicExponent INTEGER -- e |
| 500 | * } |
| 501 | */ |
| 502 | static int x509_get_rsapubkey( unsigned char **p, |
| 503 | const unsigned char *end, |
| 504 | rsa_context *rsa ) |
| 505 | { |
| 506 | int ret; |
| 507 | size_t len; |
| 508 | |
| 509 | if( ( ret = asn1_get_tag( p, end, &len, |
| 510 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 511 | return( POLARSSL_ERR_X509_CERT_INVALID_PUBKEY + ret ); |
| 512 | |
| 513 | if( *p + len != end ) |
| 514 | return( POLARSSL_ERR_X509_CERT_INVALID_PUBKEY + |
| 515 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
| 516 | |
| 517 | if( ( ret = asn1_get_mpi( p, end, &rsa->N ) ) != 0 || |
| 518 | ( ret = asn1_get_mpi( p, end, &rsa->E ) ) != 0 ) |
| 519 | return( POLARSSL_ERR_X509_CERT_INVALID_PUBKEY + ret ); |
| 520 | |
| 521 | if( ( ret = rsa_check_pubkey( rsa ) ) != 0 ) |
| 522 | return( ret ); |
| 523 | |
| 524 | rsa->len = mpi_size( &rsa->N ); |
| 525 | |
| 526 | return( 0 ); |
| 527 | } |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 528 | #endif /* POLARSSL_RSA_C */ |
Manuel Pégourié-Gonnard | 094ad9e | 2013-07-09 12:32:51 +0200 | [diff] [blame] | 529 | |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 530 | #if defined(POLARSSL_ECP_C) |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 531 | /* |
| 532 | * EC public key is an EC point |
| 533 | */ |
Manuel Pégourié-Gonnard | c296c59 | 2013-07-09 12:54:04 +0200 | [diff] [blame] | 534 | static int x509_get_ecpubkey( unsigned char **p, const unsigned char *end, |
Manuel Pégourié-Gonnard | a2d4e64 | 2013-07-11 13:59:02 +0200 | [diff] [blame] | 535 | ecp_keypair *key ) |
Manuel Pégourié-Gonnard | c296c59 | 2013-07-09 12:54:04 +0200 | [diff] [blame] | 536 | { |
| 537 | int ret; |
Manuel Pégourié-Gonnard | c296c59 | 2013-07-09 12:54:04 +0200 | [diff] [blame] | 538 | |
Manuel Pégourié-Gonnard | c296c59 | 2013-07-09 12:54:04 +0200 | [diff] [blame] | 539 | if( ( ret = ecp_point_read_binary( &key->grp, &key->Q, |
Manuel Pégourié-Gonnard | a2d4e64 | 2013-07-11 13:59:02 +0200 | [diff] [blame] | 540 | (const unsigned char *) *p, end - *p ) ) != 0 || |
| 541 | ( ret = ecp_check_pubkey( &key->grp, &key->Q ) ) != 0 ) |
Manuel Pégourié-Gonnard | 5b18fb0 | 2013-07-10 16:07:25 +0200 | [diff] [blame] | 542 | { |
| 543 | ecp_keypair_free( key ); |
| 544 | return( POLARSSL_ERR_X509_CERT_INVALID_PUBKEY ); |
Manuel Pégourié-Gonnard | c296c59 | 2013-07-09 12:54:04 +0200 | [diff] [blame] | 545 | } |
| 546 | |
Manuel Pégourié-Gonnard | a2d4e64 | 2013-07-11 13:59:02 +0200 | [diff] [blame] | 547 | /* |
| 548 | * We know ecp_point_read_binary consumed all bytes |
| 549 | */ |
| 550 | *p = (unsigned char *) end; |
| 551 | |
Manuel Pégourié-Gonnard | c296c59 | 2013-07-09 12:54:04 +0200 | [diff] [blame] | 552 | return( 0 ); |
| 553 | } |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 554 | #endif /* POLARSSL_ECP_C */ |
Manuel Pégourié-Gonnard | c296c59 | 2013-07-09 12:54:04 +0200 | [diff] [blame] | 555 | |
| 556 | /* |
| 557 | * SubjectPublicKeyInfo ::= SEQUENCE { |
| 558 | * algorithm AlgorithmIdentifier, |
| 559 | * subjectPublicKey BIT STRING } |
| 560 | */ |
| 561 | static int x509_get_pubkey( unsigned char **p, |
| 562 | const unsigned char *end, |
| 563 | pk_context *pk ) |
| 564 | { |
| 565 | int ret; |
| 566 | size_t len; |
| 567 | x509_buf alg_params; |
| 568 | pk_type_t pk_alg = POLARSSL_PK_NONE; |
| 569 | |
| 570 | if( ( ret = asn1_get_tag( p, end, &len, |
| 571 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 572 | { |
| 573 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT + ret ); |
| 574 | } |
| 575 | |
| 576 | end = *p + len; |
| 577 | |
Manuel Pégourié-Gonnard | 7a287c4 | 2013-07-10 12:55:08 +0200 | [diff] [blame] | 578 | if( ( ret = x509_get_pk_alg( p, end, &pk_alg, &alg_params ) ) != 0 ) |
Manuel Pégourié-Gonnard | c296c59 | 2013-07-09 12:54:04 +0200 | [diff] [blame] | 579 | return( ret ); |
| 580 | |
Manuel Pégourié-Gonnard | a2d4e64 | 2013-07-11 13:59:02 +0200 | [diff] [blame] | 581 | if( ( ret = asn1_get_bitstring_null( p, end, &len ) ) != 0 ) |
Manuel Pégourié-Gonnard | c296c59 | 2013-07-09 12:54:04 +0200 | [diff] [blame] | 582 | return( POLARSSL_ERR_X509_CERT_INVALID_PUBKEY + ret ); |
| 583 | |
Manuel Pégourié-Gonnard | c296c59 | 2013-07-09 12:54:04 +0200 | [diff] [blame] | 584 | if( *p + len != end ) |
| 585 | return( POLARSSL_ERR_X509_CERT_INVALID_PUBKEY + |
| 586 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
| 587 | |
Manuel Pégourié-Gonnard | 4fa0476 | 2013-07-09 13:10:49 +0200 | [diff] [blame] | 588 | if( ( ret = pk_set_type( pk, pk_alg ) ) != 0 ) |
| 589 | return( ret ); |
Manuel Pégourié-Gonnard | c296c59 | 2013-07-09 12:54:04 +0200 | [diff] [blame] | 590 | |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 591 | #if defined(POLARSSL_RSA_C) |
| 592 | if( pk_alg == POLARSSL_PK_RSA ) |
Manuel Pégourié-Gonnard | c296c59 | 2013-07-09 12:54:04 +0200 | [diff] [blame] | 593 | { |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 594 | ret = x509_get_rsapubkey( p, end, pk_rsa( *pk ) ); |
| 595 | } else |
| 596 | #endif /* POLARSSL_RSA_C */ |
| 597 | #if defined(POLARSSL_ECP_C) |
| 598 | if( pk_alg == POLARSSL_PK_ECKEY_DH || pk_alg == POLARSSL_PK_ECKEY ) |
| 599 | { |
| 600 | ret = x509_use_ecparams( &alg_params, &pk_ec( *pk )->grp ) || |
| 601 | x509_get_ecpubkey( p, end, pk_ec( *pk ) ); |
| 602 | } else |
| 603 | #endif /* POLARSSL_ECP_C */ |
| 604 | ret = POLARSSL_ERR_X509_UNKNOWN_PK_ALG; |
Manuel Pégourié-Gonnard | 4fa0476 | 2013-07-09 13:10:49 +0200 | [diff] [blame] | 605 | |
Manuel Pégourié-Gonnard | 5b18fb0 | 2013-07-10 16:07:25 +0200 | [diff] [blame] | 606 | if( ret == 0 && *p != end ) |
| 607 | ret = POLARSSL_ERR_X509_CERT_INVALID_PUBKEY |
| 608 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH; |
| 609 | |
Manuel Pégourié-Gonnard | 4fa0476 | 2013-07-09 13:10:49 +0200 | [diff] [blame] | 610 | if( ret != 0 ) |
| 611 | pk_free( pk ); |
| 612 | |
| 613 | return( ret ); |
Manuel Pégourié-Gonnard | c296c59 | 2013-07-09 12:54:04 +0200 | [diff] [blame] | 614 | } |
| 615 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 616 | static int x509_get_sig( unsigned char **p, |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 617 | const unsigned char *end, |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 618 | x509_buf *sig ) |
| 619 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 620 | int ret; |
| 621 | size_t len; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 622 | |
Paul Bakker | 8afa70d | 2012-02-11 18:42:45 +0000 | [diff] [blame] | 623 | if( ( end - *p ) < 1 ) |
| 624 | return( POLARSSL_ERR_X509_CERT_INVALID_SIGNATURE + |
| 625 | POLARSSL_ERR_ASN1_OUT_OF_DATA ); |
| 626 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 627 | sig->tag = **p; |
| 628 | |
Manuel Pégourié-Gonnard | a2d4e64 | 2013-07-11 13:59:02 +0200 | [diff] [blame] | 629 | if( ( ret = asn1_get_bitstring_null( p, end, &len ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 630 | return( POLARSSL_ERR_X509_CERT_INVALID_SIGNATURE + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 631 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 632 | sig->len = len; |
| 633 | sig->p = *p; |
| 634 | |
| 635 | *p += len; |
| 636 | |
| 637 | return( 0 ); |
| 638 | } |
| 639 | |
| 640 | /* |
| 641 | * X.509 v2/v3 unique identifier (not parsed) |
| 642 | */ |
| 643 | static int x509_get_uid( unsigned char **p, |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 644 | const unsigned char *end, |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 645 | x509_buf *uid, int n ) |
| 646 | { |
| 647 | int ret; |
| 648 | |
| 649 | if( *p == end ) |
| 650 | return( 0 ); |
| 651 | |
| 652 | uid->tag = **p; |
| 653 | |
| 654 | if( ( ret = asn1_get_tag( p, end, &uid->len, |
| 655 | ASN1_CONTEXT_SPECIFIC | ASN1_CONSTRUCTED | n ) ) != 0 ) |
| 656 | { |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 657 | if( ret == POLARSSL_ERR_ASN1_UNEXPECTED_TAG ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 658 | return( 0 ); |
| 659 | |
| 660 | return( ret ); |
| 661 | } |
| 662 | |
| 663 | uid->p = *p; |
| 664 | *p += uid->len; |
| 665 | |
| 666 | return( 0 ); |
| 667 | } |
| 668 | |
| 669 | /* |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 670 | * X.509 Extensions (No parsing of extensions, pointer should |
| 671 | * be either manually updated or extensions should be parsed! |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 672 | */ |
| 673 | static int x509_get_ext( unsigned char **p, |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 674 | const unsigned char *end, |
Paul Bakker | fbc09f3 | 2011-10-12 09:56:41 +0000 | [diff] [blame] | 675 | x509_buf *ext, int tag ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 676 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 677 | int ret; |
| 678 | size_t len; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 679 | |
| 680 | if( *p == end ) |
| 681 | return( 0 ); |
| 682 | |
| 683 | ext->tag = **p; |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 684 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 685 | if( ( ret = asn1_get_tag( p, end, &ext->len, |
Paul Bakker | fbc09f3 | 2011-10-12 09:56:41 +0000 | [diff] [blame] | 686 | ASN1_CONTEXT_SPECIFIC | ASN1_CONSTRUCTED | tag ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 687 | return( ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 688 | |
| 689 | ext->p = *p; |
| 690 | end = *p + ext->len; |
| 691 | |
| 692 | /* |
| 693 | * Extensions ::= SEQUENCE SIZE (1..MAX) OF Extension |
| 694 | * |
| 695 | * Extension ::= SEQUENCE { |
| 696 | * extnID OBJECT IDENTIFIER, |
| 697 | * critical BOOLEAN DEFAULT FALSE, |
| 698 | * extnValue OCTET STRING } |
| 699 | */ |
| 700 | if( ( ret = asn1_get_tag( p, end, &len, |
| 701 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 702 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 703 | |
| 704 | if( end != *p + len ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 705 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 706 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 707 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 708 | return( 0 ); |
| 709 | } |
| 710 | |
| 711 | /* |
| 712 | * X.509 CRL v2 extensions (no extensions parsed yet.) |
| 713 | */ |
| 714 | static int x509_get_crl_ext( unsigned char **p, |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 715 | const unsigned char *end, |
| 716 | x509_buf *ext ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 717 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 718 | int ret; |
Paul Bakker | fbc09f3 | 2011-10-12 09:56:41 +0000 | [diff] [blame] | 719 | size_t len = 0; |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 720 | |
Paul Bakker | fbc09f3 | 2011-10-12 09:56:41 +0000 | [diff] [blame] | 721 | /* Get explicit tag */ |
| 722 | if( ( ret = x509_get_ext( p, end, ext, 0) ) != 0 ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 723 | { |
| 724 | if( ret == POLARSSL_ERR_ASN1_UNEXPECTED_TAG ) |
| 725 | return( 0 ); |
| 726 | |
| 727 | return( ret ); |
| 728 | } |
| 729 | |
| 730 | while( *p < end ) |
| 731 | { |
| 732 | if( ( ret = asn1_get_tag( p, end, &len, |
| 733 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 734 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + ret ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 735 | |
| 736 | *p += len; |
| 737 | } |
| 738 | |
| 739 | if( *p != end ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 740 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 741 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
| 742 | |
| 743 | return( 0 ); |
| 744 | } |
| 745 | |
Paul Bakker | b5a11ab | 2011-10-12 09:58:41 +0000 | [diff] [blame] | 746 | /* |
| 747 | * X.509 CRL v2 entry extensions (no extensions parsed yet.) |
| 748 | */ |
| 749 | static int x509_get_crl_entry_ext( unsigned char **p, |
| 750 | const unsigned char *end, |
| 751 | x509_buf *ext ) |
| 752 | { |
| 753 | int ret; |
| 754 | size_t len = 0; |
| 755 | |
| 756 | /* OPTIONAL */ |
| 757 | if (end <= *p) |
| 758 | return( 0 ); |
| 759 | |
| 760 | ext->tag = **p; |
| 761 | ext->p = *p; |
| 762 | |
| 763 | /* |
| 764 | * Get CRL-entry extension sequence header |
| 765 | * crlEntryExtensions Extensions OPTIONAL -- if present, MUST be v2 |
| 766 | */ |
| 767 | if( ( ret = asn1_get_tag( p, end, &ext->len, |
| 768 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 769 | { |
| 770 | if( ret == POLARSSL_ERR_ASN1_UNEXPECTED_TAG ) |
| 771 | { |
| 772 | ext->p = NULL; |
| 773 | return( 0 ); |
| 774 | } |
| 775 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + ret ); |
| 776 | } |
| 777 | |
| 778 | end = *p + ext->len; |
| 779 | |
| 780 | if( end != *p + ext->len ) |
| 781 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + |
| 782 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
| 783 | |
| 784 | while( *p < end ) |
| 785 | { |
| 786 | if( ( ret = asn1_get_tag( p, end, &len, |
| 787 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 788 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + ret ); |
| 789 | |
| 790 | *p += len; |
| 791 | } |
| 792 | |
| 793 | if( *p != end ) |
| 794 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + |
| 795 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
| 796 | |
| 797 | return( 0 ); |
| 798 | } |
| 799 | |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 800 | static int x509_get_basic_constraints( unsigned char **p, |
| 801 | const unsigned char *end, |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 802 | int *ca_istrue, |
| 803 | int *max_pathlen ) |
| 804 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 805 | int ret; |
| 806 | size_t len; |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 807 | |
| 808 | /* |
| 809 | * BasicConstraints ::= SEQUENCE { |
| 810 | * cA BOOLEAN DEFAULT FALSE, |
| 811 | * pathLenConstraint INTEGER (0..MAX) OPTIONAL } |
| 812 | */ |
Paul Bakker | 3cccddb | 2011-01-16 21:46:31 +0000 | [diff] [blame] | 813 | *ca_istrue = 0; /* DEFAULT FALSE */ |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 814 | *max_pathlen = 0; /* endless */ |
| 815 | |
| 816 | if( ( ret = asn1_get_tag( p, end, &len, |
| 817 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 818 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + ret ); |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 819 | |
| 820 | if( *p == end ) |
| 821 | return 0; |
| 822 | |
Paul Bakker | 3cccddb | 2011-01-16 21:46:31 +0000 | [diff] [blame] | 823 | if( ( ret = asn1_get_bool( p, end, ca_istrue ) ) != 0 ) |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 824 | { |
| 825 | if( ret == POLARSSL_ERR_ASN1_UNEXPECTED_TAG ) |
Paul Bakker | 3cccddb | 2011-01-16 21:46:31 +0000 | [diff] [blame] | 826 | ret = asn1_get_int( p, end, ca_istrue ); |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 827 | |
| 828 | if( ret != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 829 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + ret ); |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 830 | |
Paul Bakker | 3cccddb | 2011-01-16 21:46:31 +0000 | [diff] [blame] | 831 | if( *ca_istrue != 0 ) |
| 832 | *ca_istrue = 1; |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 833 | } |
| 834 | |
| 835 | if( *p == end ) |
| 836 | return 0; |
| 837 | |
| 838 | if( ( ret = asn1_get_int( p, end, max_pathlen ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 839 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + ret ); |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 840 | |
| 841 | if( *p != end ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 842 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 843 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
| 844 | |
| 845 | (*max_pathlen)++; |
| 846 | |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 847 | return 0; |
| 848 | } |
| 849 | |
| 850 | static int x509_get_ns_cert_type( unsigned char **p, |
| 851 | const unsigned char *end, |
| 852 | unsigned char *ns_cert_type) |
| 853 | { |
| 854 | int ret; |
Paul Bakker | d61e7d9 | 2011-01-18 16:17:47 +0000 | [diff] [blame] | 855 | x509_bitstring bs = { 0, 0, NULL }; |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 856 | |
| 857 | if( ( ret = asn1_get_bitstring( p, end, &bs ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 858 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + ret ); |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 859 | |
| 860 | if( bs.len != 1 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 861 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 862 | POLARSSL_ERR_ASN1_INVALID_LENGTH ); |
| 863 | |
| 864 | /* Get actual bitstring */ |
| 865 | *ns_cert_type = *bs.p; |
| 866 | return 0; |
| 867 | } |
| 868 | |
| 869 | static int x509_get_key_usage( unsigned char **p, |
| 870 | const unsigned char *end, |
| 871 | unsigned char *key_usage) |
| 872 | { |
| 873 | int ret; |
Paul Bakker | d61e7d9 | 2011-01-18 16:17:47 +0000 | [diff] [blame] | 874 | x509_bitstring bs = { 0, 0, NULL }; |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 875 | |
| 876 | if( ( ret = asn1_get_bitstring( p, end, &bs ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 877 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + ret ); |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 878 | |
Paul Bakker | 94a6796 | 2012-08-23 13:03:52 +0000 | [diff] [blame] | 879 | if( bs.len < 1 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 880 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 881 | POLARSSL_ERR_ASN1_INVALID_LENGTH ); |
| 882 | |
| 883 | /* Get actual bitstring */ |
| 884 | *key_usage = *bs.p; |
| 885 | return 0; |
| 886 | } |
| 887 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 888 | /* |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 889 | * ExtKeyUsageSyntax ::= SEQUENCE SIZE (1..MAX) OF KeyPurposeId |
| 890 | * |
| 891 | * KeyPurposeId ::= OBJECT IDENTIFIER |
| 892 | */ |
| 893 | static int x509_get_ext_key_usage( unsigned char **p, |
| 894 | const unsigned char *end, |
| 895 | x509_sequence *ext_key_usage) |
| 896 | { |
| 897 | int ret; |
| 898 | |
| 899 | if( ( ret = asn1_get_sequence_of( p, end, ext_key_usage, ASN1_OID ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 900 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + ret ); |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 901 | |
| 902 | /* Sequence length must be >= 1 */ |
| 903 | if( ext_key_usage->buf.p == NULL ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 904 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 905 | POLARSSL_ERR_ASN1_INVALID_LENGTH ); |
| 906 | |
| 907 | return 0; |
| 908 | } |
| 909 | |
| 910 | /* |
Paul Bakker | a8cd239 | 2012-02-11 16:09:32 +0000 | [diff] [blame] | 911 | * SubjectAltName ::= GeneralNames |
| 912 | * |
| 913 | * GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName |
| 914 | * |
| 915 | * GeneralName ::= CHOICE { |
| 916 | * otherName [0] OtherName, |
| 917 | * rfc822Name [1] IA5String, |
| 918 | * dNSName [2] IA5String, |
| 919 | * x400Address [3] ORAddress, |
| 920 | * directoryName [4] Name, |
| 921 | * ediPartyName [5] EDIPartyName, |
| 922 | * uniformResourceIdentifier [6] IA5String, |
| 923 | * iPAddress [7] OCTET STRING, |
| 924 | * registeredID [8] OBJECT IDENTIFIER } |
| 925 | * |
| 926 | * OtherName ::= SEQUENCE { |
| 927 | * type-id OBJECT IDENTIFIER, |
| 928 | * value [0] EXPLICIT ANY DEFINED BY type-id } |
| 929 | * |
| 930 | * EDIPartyName ::= SEQUENCE { |
| 931 | * nameAssigner [0] DirectoryString OPTIONAL, |
| 932 | * partyName [1] DirectoryString } |
| 933 | * |
| 934 | * NOTE: PolarSSL only parses and uses dNSName at this point. |
| 935 | */ |
| 936 | static int x509_get_subject_alt_name( unsigned char **p, |
| 937 | const unsigned char *end, |
| 938 | x509_sequence *subject_alt_name ) |
| 939 | { |
| 940 | int ret; |
| 941 | size_t len, tag_len; |
| 942 | asn1_buf *buf; |
| 943 | unsigned char tag; |
| 944 | asn1_sequence *cur = subject_alt_name; |
| 945 | |
| 946 | /* Get main sequence tag */ |
| 947 | if( ( ret = asn1_get_tag( p, end, &len, |
| 948 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 949 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + ret ); |
| 950 | |
| 951 | if( *p + len != end ) |
| 952 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + |
| 953 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
| 954 | |
| 955 | while( *p < end ) |
| 956 | { |
| 957 | if( ( end - *p ) < 1 ) |
| 958 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + |
| 959 | POLARSSL_ERR_ASN1_OUT_OF_DATA ); |
| 960 | |
| 961 | tag = **p; |
| 962 | (*p)++; |
| 963 | if( ( ret = asn1_get_len( p, end, &tag_len ) ) != 0 ) |
| 964 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + ret ); |
| 965 | |
| 966 | if( ( tag & ASN1_CONTEXT_SPECIFIC ) != ASN1_CONTEXT_SPECIFIC ) |
| 967 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + |
| 968 | POLARSSL_ERR_ASN1_UNEXPECTED_TAG ); |
| 969 | |
| 970 | if( tag != ( ASN1_CONTEXT_SPECIFIC | 2 ) ) |
| 971 | { |
| 972 | *p += tag_len; |
| 973 | continue; |
| 974 | } |
| 975 | |
| 976 | buf = &(cur->buf); |
| 977 | buf->tag = tag; |
| 978 | buf->p = *p; |
| 979 | buf->len = tag_len; |
| 980 | *p += buf->len; |
| 981 | |
| 982 | /* Allocate and assign next pointer */ |
| 983 | if (*p < end) |
| 984 | { |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 985 | cur->next = (asn1_sequence *) polarssl_malloc( |
Paul Bakker | a8cd239 | 2012-02-11 16:09:32 +0000 | [diff] [blame] | 986 | sizeof( asn1_sequence ) ); |
| 987 | |
| 988 | if( cur->next == NULL ) |
| 989 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + |
| 990 | POLARSSL_ERR_ASN1_MALLOC_FAILED ); |
| 991 | |
Paul Bakker | 535e97d | 2012-08-23 10:49:55 +0000 | [diff] [blame] | 992 | memset( cur->next, 0, sizeof( asn1_sequence ) ); |
Paul Bakker | a8cd239 | 2012-02-11 16:09:32 +0000 | [diff] [blame] | 993 | cur = cur->next; |
| 994 | } |
| 995 | } |
| 996 | |
| 997 | /* Set final sequence entry's next pointer to NULL */ |
| 998 | cur->next = NULL; |
| 999 | |
| 1000 | if( *p != end ) |
| 1001 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + |
| 1002 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
| 1003 | |
| 1004 | return( 0 ); |
| 1005 | } |
| 1006 | |
| 1007 | /* |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 1008 | * X.509 v3 extensions |
| 1009 | * |
| 1010 | * TODO: Perform all of the basic constraints tests required by the RFC |
| 1011 | * TODO: Set values for undetected extensions to a sane default? |
| 1012 | * |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1013 | */ |
| 1014 | static int x509_get_crt_ext( unsigned char **p, |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 1015 | const unsigned char *end, |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 1016 | x509_cert *crt ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1017 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 1018 | int ret; |
| 1019 | size_t len; |
Paul Bakker | c6ce838 | 2009-07-27 21:34:45 +0000 | [diff] [blame] | 1020 | unsigned char *end_ext_data, *end_ext_octet; |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1021 | |
Paul Bakker | fbc09f3 | 2011-10-12 09:56:41 +0000 | [diff] [blame] | 1022 | if( ( ret = x509_get_ext( p, end, &crt->v3_ext, 3 ) ) != 0 ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1023 | { |
| 1024 | if( ret == POLARSSL_ERR_ASN1_UNEXPECTED_TAG ) |
| 1025 | return( 0 ); |
| 1026 | |
| 1027 | return( ret ); |
| 1028 | } |
| 1029 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1030 | while( *p < end ) |
| 1031 | { |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 1032 | /* |
| 1033 | * Extension ::= SEQUENCE { |
| 1034 | * extnID OBJECT IDENTIFIER, |
| 1035 | * critical BOOLEAN DEFAULT FALSE, |
| 1036 | * extnValue OCTET STRING } |
| 1037 | */ |
| 1038 | x509_buf extn_oid = {0, 0, NULL}; |
| 1039 | int is_critical = 0; /* DEFAULT FALSE */ |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 1040 | int ext_type = 0; |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 1041 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1042 | if( ( ret = asn1_get_tag( p, end, &len, |
| 1043 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1044 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1045 | |
Paul Bakker | c6ce838 | 2009-07-27 21:34:45 +0000 | [diff] [blame] | 1046 | end_ext_data = *p + len; |
| 1047 | |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 1048 | /* Get extension ID */ |
| 1049 | extn_oid.tag = **p; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1050 | |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 1051 | if( ( ret = asn1_get_tag( p, end, &extn_oid.len, ASN1_OID ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1052 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1053 | |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 1054 | extn_oid.p = *p; |
| 1055 | *p += extn_oid.len; |
| 1056 | |
| 1057 | if( ( end - *p ) < 1 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1058 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 1059 | POLARSSL_ERR_ASN1_OUT_OF_DATA ); |
| 1060 | |
| 1061 | /* Get optional critical */ |
Paul Bakker | c6ce838 | 2009-07-27 21:34:45 +0000 | [diff] [blame] | 1062 | if( ( ret = asn1_get_bool( p, end_ext_data, &is_critical ) ) != 0 && |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1063 | ( ret != POLARSSL_ERR_ASN1_UNEXPECTED_TAG ) ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1064 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1065 | |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 1066 | /* Data should be octet string type */ |
Paul Bakker | c6ce838 | 2009-07-27 21:34:45 +0000 | [diff] [blame] | 1067 | if( ( ret = asn1_get_tag( p, end_ext_data, &len, |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1068 | ASN1_OCTET_STRING ) ) != 0 ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1069 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1070 | |
Paul Bakker | c6ce838 | 2009-07-27 21:34:45 +0000 | [diff] [blame] | 1071 | end_ext_octet = *p + len; |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 1072 | |
Paul Bakker | c6ce838 | 2009-07-27 21:34:45 +0000 | [diff] [blame] | 1073 | if( end_ext_octet != end_ext_data ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1074 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + |
Paul Bakker | c6ce838 | 2009-07-27 21:34:45 +0000 | [diff] [blame] | 1075 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1076 | |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 1077 | /* |
| 1078 | * Detect supported extensions |
| 1079 | */ |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 1080 | ret = oid_get_x509_ext_type( &extn_oid, &ext_type ); |
| 1081 | |
| 1082 | if( ret != 0 ) |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 1083 | { |
| 1084 | /* No parser found, skip extension */ |
| 1085 | *p = end_ext_octet; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1086 | |
Paul Bakker | 5c721f9 | 2011-07-27 16:51:09 +0000 | [diff] [blame] | 1087 | #if !defined(POLARSSL_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION) |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 1088 | if( is_critical ) |
| 1089 | { |
| 1090 | /* Data is marked as critical: fail */ |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1091 | return ( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 1092 | POLARSSL_ERR_ASN1_UNEXPECTED_TAG ); |
| 1093 | } |
Paul Bakker | 5c721f9 | 2011-07-27 16:51:09 +0000 | [diff] [blame] | 1094 | #endif |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 1095 | continue; |
| 1096 | } |
| 1097 | |
| 1098 | crt->ext_types |= ext_type; |
| 1099 | |
| 1100 | switch( ext_type ) |
| 1101 | { |
| 1102 | case EXT_BASIC_CONSTRAINTS: |
| 1103 | /* Parse basic constraints */ |
| 1104 | if( ( ret = x509_get_basic_constraints( p, end_ext_octet, |
| 1105 | &crt->ca_istrue, &crt->max_pathlen ) ) != 0 ) |
| 1106 | return ( ret ); |
| 1107 | break; |
| 1108 | |
| 1109 | case EXT_KEY_USAGE: |
| 1110 | /* Parse key usage */ |
| 1111 | if( ( ret = x509_get_key_usage( p, end_ext_octet, |
| 1112 | &crt->key_usage ) ) != 0 ) |
| 1113 | return ( ret ); |
| 1114 | break; |
| 1115 | |
| 1116 | case EXT_EXTENDED_KEY_USAGE: |
| 1117 | /* Parse extended key usage */ |
| 1118 | if( ( ret = x509_get_ext_key_usage( p, end_ext_octet, |
| 1119 | &crt->ext_key_usage ) ) != 0 ) |
| 1120 | return ( ret ); |
| 1121 | break; |
| 1122 | |
| 1123 | case EXT_SUBJECT_ALT_NAME: |
| 1124 | /* Parse subject alt name */ |
| 1125 | if( ( ret = x509_get_subject_alt_name( p, end_ext_octet, |
| 1126 | &crt->subject_alt_names ) ) != 0 ) |
| 1127 | return ( ret ); |
| 1128 | break; |
| 1129 | |
| 1130 | case EXT_NS_CERT_TYPE: |
| 1131 | /* Parse netscape certificate type */ |
| 1132 | if( ( ret = x509_get_ns_cert_type( p, end_ext_octet, |
| 1133 | &crt->ns_cert_type ) ) != 0 ) |
| 1134 | return ( ret ); |
| 1135 | break; |
| 1136 | |
| 1137 | default: |
| 1138 | return( POLARSSL_ERR_X509_FEATURE_UNAVAILABLE ); |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 1139 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1140 | } |
| 1141 | |
| 1142 | if( *p != end ) |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1143 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS + |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1144 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1145 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1146 | return( 0 ); |
| 1147 | } |
| 1148 | |
| 1149 | /* |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1150 | * X.509 CRL Entries |
| 1151 | */ |
| 1152 | static int x509_get_entries( unsigned char **p, |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 1153 | const unsigned char *end, |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1154 | x509_crl_entry *entry ) |
| 1155 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 1156 | int ret; |
| 1157 | size_t entry_len; |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1158 | x509_crl_entry *cur_entry = entry; |
| 1159 | |
| 1160 | if( *p == end ) |
| 1161 | return( 0 ); |
| 1162 | |
Paul Bakker | 9be1937 | 2009-07-27 20:21:53 +0000 | [diff] [blame] | 1163 | if( ( ret = asn1_get_tag( p, end, &entry_len, |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1164 | ASN1_SEQUENCE | ASN1_CONSTRUCTED ) ) != 0 ) |
| 1165 | { |
| 1166 | if( ret == POLARSSL_ERR_ASN1_UNEXPECTED_TAG ) |
| 1167 | return( 0 ); |
| 1168 | |
| 1169 | return( ret ); |
| 1170 | } |
| 1171 | |
Paul Bakker | 9be1937 | 2009-07-27 20:21:53 +0000 | [diff] [blame] | 1172 | end = *p + entry_len; |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1173 | |
| 1174 | while( *p < end ) |
| 1175 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 1176 | size_t len2; |
Paul Bakker | b5a11ab | 2011-10-12 09:58:41 +0000 | [diff] [blame] | 1177 | const unsigned char *end2; |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1178 | |
| 1179 | if( ( ret = asn1_get_tag( p, end, &len2, |
| 1180 | ASN1_SEQUENCE | ASN1_CONSTRUCTED ) ) != 0 ) |
| 1181 | { |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1182 | return( ret ); |
| 1183 | } |
| 1184 | |
Paul Bakker | 9be1937 | 2009-07-27 20:21:53 +0000 | [diff] [blame] | 1185 | cur_entry->raw.tag = **p; |
| 1186 | cur_entry->raw.p = *p; |
| 1187 | cur_entry->raw.len = len2; |
Paul Bakker | b5a11ab | 2011-10-12 09:58:41 +0000 | [diff] [blame] | 1188 | end2 = *p + len2; |
Paul Bakker | 9be1937 | 2009-07-27 20:21:53 +0000 | [diff] [blame] | 1189 | |
Paul Bakker | b5a11ab | 2011-10-12 09:58:41 +0000 | [diff] [blame] | 1190 | if( ( ret = x509_get_serial( p, end2, &cur_entry->serial ) ) != 0 ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1191 | return( ret ); |
| 1192 | |
Paul Bakker | b5a11ab | 2011-10-12 09:58:41 +0000 | [diff] [blame] | 1193 | if( ( ret = x509_get_time( p, end2, &cur_entry->revocation_date ) ) != 0 ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1194 | return( ret ); |
| 1195 | |
Paul Bakker | b5a11ab | 2011-10-12 09:58:41 +0000 | [diff] [blame] | 1196 | if( ( ret = x509_get_crl_entry_ext( p, end2, &cur_entry->entry_ext ) ) != 0 ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1197 | return( ret ); |
| 1198 | |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 1199 | if ( *p < end ) |
| 1200 | { |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 1201 | cur_entry->next = polarssl_malloc( sizeof( x509_crl_entry ) ); |
Paul Bakker | b15b851 | 2012-01-13 13:44:06 +0000 | [diff] [blame] | 1202 | |
| 1203 | if( cur_entry->next == NULL ) |
| 1204 | return( POLARSSL_ERR_X509_MALLOC_FAILED ); |
| 1205 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1206 | cur_entry = cur_entry->next; |
| 1207 | memset( cur_entry, 0, sizeof( x509_crl_entry ) ); |
| 1208 | } |
| 1209 | } |
| 1210 | |
| 1211 | return( 0 ); |
| 1212 | } |
| 1213 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 1214 | static int x509_get_sig_alg( const x509_buf *sig_oid, md_type_t *md_alg, |
| 1215 | pk_type_t *pk_alg ) |
Paul Bakker | 27d6616 | 2010-03-17 06:56:01 +0000 | [diff] [blame] | 1216 | { |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 1217 | int ret = oid_get_sig_alg( sig_oid, md_alg, pk_alg ); |
Paul Bakker | 27d6616 | 2010-03-17 06:56:01 +0000 | [diff] [blame] | 1218 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 1219 | if( ret != 0 ) |
| 1220 | return( POLARSSL_ERR_X509_CERT_UNKNOWN_SIG_ALG + ret ); |
Paul Bakker | 27d6616 | 2010-03-17 06:56:01 +0000 | [diff] [blame] | 1221 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 1222 | return( 0 ); |
Paul Bakker | 27d6616 | 2010-03-17 06:56:01 +0000 | [diff] [blame] | 1223 | } |
| 1224 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1225 | /* |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1226 | * Parse and fill a single X.509 certificate in DER format |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1227 | */ |
Paul Bakker | b6c5d2e | 2013-06-25 16:25:17 +0200 | [diff] [blame] | 1228 | static int x509parse_crt_der_core( x509_cert *crt, const unsigned char *buf, |
| 1229 | size_t buflen ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1230 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 1231 | int ret; |
Paul Bakker | 5690efc | 2011-05-26 13:16:06 +0000 | [diff] [blame] | 1232 | size_t len; |
Paul Bakker | b00ca42 | 2012-09-25 12:10:00 +0000 | [diff] [blame] | 1233 | unsigned char *p, *end, *crt_end; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1234 | |
Paul Bakker | 320a4b5 | 2009-03-28 18:52:39 +0000 | [diff] [blame] | 1235 | /* |
| 1236 | * Check for valid input |
| 1237 | */ |
| 1238 | if( crt == NULL || buf == NULL ) |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 1239 | return( POLARSSL_ERR_X509_INVALID_INPUT ); |
Paul Bakker | 320a4b5 | 2009-03-28 18:52:39 +0000 | [diff] [blame] | 1240 | |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 1241 | p = (unsigned char *) polarssl_malloc( len = buflen ); |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 1242 | |
| 1243 | if( p == NULL ) |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 1244 | return( POLARSSL_ERR_X509_MALLOC_FAILED ); |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 1245 | |
| 1246 | memcpy( p, buf, buflen ); |
| 1247 | |
| 1248 | buflen = 0; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1249 | |
| 1250 | crt->raw.p = p; |
| 1251 | crt->raw.len = len; |
| 1252 | end = p + len; |
| 1253 | |
| 1254 | /* |
| 1255 | * Certificate ::= SEQUENCE { |
| 1256 | * tbsCertificate TBSCertificate, |
| 1257 | * signatureAlgorithm AlgorithmIdentifier, |
| 1258 | * signatureValue BIT STRING } |
| 1259 | */ |
| 1260 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 1261 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 1262 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1263 | x509_free( crt ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1264 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1265 | } |
| 1266 | |
Paul Bakker | b00ca42 | 2012-09-25 12:10:00 +0000 | [diff] [blame] | 1267 | if( len > (size_t) ( end - p ) ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1268 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1269 | x509_free( crt ); |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1270 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT + |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1271 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1272 | } |
Paul Bakker | b00ca42 | 2012-09-25 12:10:00 +0000 | [diff] [blame] | 1273 | crt_end = p + len; |
Paul Bakker | 42c6581 | 2013-06-24 19:21:59 +0200 | [diff] [blame] | 1274 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1275 | /* |
| 1276 | * TBSCertificate ::= SEQUENCE { |
| 1277 | */ |
| 1278 | crt->tbs.p = p; |
| 1279 | |
| 1280 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 1281 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 1282 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1283 | x509_free( crt ); |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1284 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1285 | } |
| 1286 | |
| 1287 | end = p + len; |
| 1288 | crt->tbs.len = end - crt->tbs.p; |
| 1289 | |
| 1290 | /* |
| 1291 | * Version ::= INTEGER { v1(0), v2(1), v3(2) } |
| 1292 | * |
| 1293 | * CertificateSerialNumber ::= INTEGER |
| 1294 | * |
| 1295 | * signature AlgorithmIdentifier |
| 1296 | */ |
Manuel Pégourié-Gonnard | a155513 | 2013-07-10 13:18:41 +0200 | [diff] [blame] | 1297 | if( ( ret = x509_get_version( &p, end, &crt->version ) ) != 0 || |
| 1298 | ( ret = x509_get_serial( &p, end, &crt->serial ) ) != 0 || |
| 1299 | ( ret = x509_get_alg_null( &p, end, &crt->sig_oid1 ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1300 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1301 | x509_free( crt ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1302 | return( ret ); |
| 1303 | } |
| 1304 | |
| 1305 | crt->version++; |
| 1306 | |
| 1307 | if( crt->version > 3 ) |
| 1308 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1309 | x509_free( crt ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1310 | return( POLARSSL_ERR_X509_CERT_UNKNOWN_VERSION ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1311 | } |
| 1312 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 1313 | if( ( ret = x509_get_sig_alg( &crt->sig_oid1, &crt->sig_md, |
| 1314 | &crt->sig_pk ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1315 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1316 | x509_free( crt ); |
Paul Bakker | 27d6616 | 2010-03-17 06:56:01 +0000 | [diff] [blame] | 1317 | return( ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1318 | } |
| 1319 | |
| 1320 | /* |
| 1321 | * issuer Name |
| 1322 | */ |
| 1323 | crt->issuer_raw.p = p; |
| 1324 | |
| 1325 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 1326 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 1327 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1328 | x509_free( crt ); |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1329 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1330 | } |
| 1331 | |
| 1332 | if( ( ret = x509_get_name( &p, p + len, &crt->issuer ) ) != 0 ) |
| 1333 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1334 | x509_free( crt ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1335 | return( ret ); |
| 1336 | } |
| 1337 | |
| 1338 | crt->issuer_raw.len = p - crt->issuer_raw.p; |
| 1339 | |
| 1340 | /* |
| 1341 | * Validity ::= SEQUENCE { |
| 1342 | * notBefore Time, |
| 1343 | * notAfter Time } |
| 1344 | * |
| 1345 | */ |
| 1346 | if( ( ret = x509_get_dates( &p, end, &crt->valid_from, |
| 1347 | &crt->valid_to ) ) != 0 ) |
| 1348 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1349 | x509_free( crt ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1350 | return( ret ); |
| 1351 | } |
| 1352 | |
| 1353 | /* |
| 1354 | * subject Name |
| 1355 | */ |
| 1356 | crt->subject_raw.p = p; |
| 1357 | |
| 1358 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 1359 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 1360 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1361 | x509_free( crt ); |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1362 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1363 | } |
| 1364 | |
Paul Bakker | cefb396 | 2012-06-27 11:51:09 +0000 | [diff] [blame] | 1365 | if( len && ( ret = x509_get_name( &p, p + len, &crt->subject ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1366 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1367 | x509_free( crt ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1368 | return( ret ); |
| 1369 | } |
| 1370 | |
| 1371 | crt->subject_raw.len = p - crt->subject_raw.p; |
| 1372 | |
| 1373 | /* |
Manuel Pégourié-Gonnard | 20c12f6 | 2013-07-09 12:13:24 +0200 | [diff] [blame] | 1374 | * SubjectPublicKeyInfo |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1375 | */ |
Manuel Pégourié-Gonnard | 674b224 | 2013-07-10 14:32:58 +0200 | [diff] [blame] | 1376 | if( ( ret = x509_get_pubkey( &p, end, &crt->pk ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1377 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1378 | x509_free( crt ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1379 | return( ret ); |
| 1380 | } |
| 1381 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1382 | /* |
| 1383 | * issuerUniqueID [1] IMPLICIT UniqueIdentifier OPTIONAL, |
| 1384 | * -- If present, version shall be v2 or v3 |
| 1385 | * subjectUniqueID [2] IMPLICIT UniqueIdentifier OPTIONAL, |
| 1386 | * -- If present, version shall be v2 or v3 |
| 1387 | * extensions [3] EXPLICIT Extensions OPTIONAL |
| 1388 | * -- If present, version shall be v3 |
| 1389 | */ |
| 1390 | if( crt->version == 2 || crt->version == 3 ) |
| 1391 | { |
| 1392 | ret = x509_get_uid( &p, end, &crt->issuer_id, 1 ); |
| 1393 | if( ret != 0 ) |
| 1394 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1395 | x509_free( crt ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1396 | return( ret ); |
| 1397 | } |
| 1398 | } |
| 1399 | |
| 1400 | if( crt->version == 2 || crt->version == 3 ) |
| 1401 | { |
| 1402 | ret = x509_get_uid( &p, end, &crt->subject_id, 2 ); |
| 1403 | if( ret != 0 ) |
| 1404 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1405 | x509_free( crt ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1406 | return( ret ); |
| 1407 | } |
| 1408 | } |
| 1409 | |
| 1410 | if( crt->version == 3 ) |
| 1411 | { |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 1412 | ret = x509_get_crt_ext( &p, end, crt); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1413 | if( ret != 0 ) |
| 1414 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1415 | x509_free( crt ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1416 | return( ret ); |
| 1417 | } |
| 1418 | } |
| 1419 | |
| 1420 | if( p != end ) |
| 1421 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1422 | x509_free( crt ); |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1423 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT + |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1424 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1425 | } |
| 1426 | |
Paul Bakker | b00ca42 | 2012-09-25 12:10:00 +0000 | [diff] [blame] | 1427 | end = crt_end; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1428 | |
| 1429 | /* |
Manuel Pégourié-Gonnard | 20c12f6 | 2013-07-09 12:13:24 +0200 | [diff] [blame] | 1430 | * } |
| 1431 | * -- end of TBSCertificate |
| 1432 | * |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1433 | * signatureAlgorithm AlgorithmIdentifier, |
| 1434 | * signatureValue BIT STRING |
| 1435 | */ |
Manuel Pégourié-Gonnard | a155513 | 2013-07-10 13:18:41 +0200 | [diff] [blame] | 1436 | if( ( ret = x509_get_alg_null( &p, end, &crt->sig_oid2 ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1437 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1438 | x509_free( crt ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1439 | return( ret ); |
| 1440 | } |
| 1441 | |
Paul Bakker | 535e97d | 2012-08-23 10:49:55 +0000 | [diff] [blame] | 1442 | if( crt->sig_oid1.len != crt->sig_oid2.len || |
| 1443 | memcmp( crt->sig_oid1.p, crt->sig_oid2.p, crt->sig_oid1.len ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1444 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1445 | x509_free( crt ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1446 | return( POLARSSL_ERR_X509_CERT_SIG_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1447 | } |
| 1448 | |
| 1449 | if( ( ret = x509_get_sig( &p, end, &crt->sig ) ) != 0 ) |
| 1450 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1451 | x509_free( crt ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1452 | return( ret ); |
| 1453 | } |
| 1454 | |
| 1455 | if( p != end ) |
| 1456 | { |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1457 | x509_free( crt ); |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1458 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT + |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1459 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1460 | } |
| 1461 | |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1462 | return( 0 ); |
| 1463 | } |
| 1464 | |
| 1465 | /* |
Paul Bakker | 42c6581 | 2013-06-24 19:21:59 +0200 | [diff] [blame] | 1466 | * Parse one X.509 certificate in DER format from a buffer and add them to a |
| 1467 | * chained list |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1468 | */ |
Paul Bakker | 42c6581 | 2013-06-24 19:21:59 +0200 | [diff] [blame] | 1469 | int x509parse_crt_der( x509_cert *chain, const unsigned char *buf, size_t buflen ) |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1470 | { |
Paul Bakker | 42c6581 | 2013-06-24 19:21:59 +0200 | [diff] [blame] | 1471 | int ret; |
| 1472 | x509_cert *crt = chain, *prev = NULL; |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1473 | |
| 1474 | /* |
| 1475 | * Check for valid input |
| 1476 | */ |
| 1477 | if( crt == NULL || buf == NULL ) |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 1478 | return( POLARSSL_ERR_X509_INVALID_INPUT ); |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1479 | |
| 1480 | while( crt->version != 0 && crt->next != NULL ) |
| 1481 | { |
| 1482 | prev = crt; |
| 1483 | crt = crt->next; |
| 1484 | } |
| 1485 | |
| 1486 | /* |
| 1487 | * Add new certificate on the end of the chain if needed. |
| 1488 | */ |
| 1489 | if ( crt->version != 0 && crt->next == NULL) |
Paul Bakker | 320a4b5 | 2009-03-28 18:52:39 +0000 | [diff] [blame] | 1490 | { |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 1491 | crt->next = (x509_cert *) polarssl_malloc( sizeof( x509_cert ) ); |
Paul Bakker | 320a4b5 | 2009-03-28 18:52:39 +0000 | [diff] [blame] | 1492 | |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1493 | if( crt->next == NULL ) |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 1494 | return( POLARSSL_ERR_X509_MALLOC_FAILED ); |
Paul Bakker | 320a4b5 | 2009-03-28 18:52:39 +0000 | [diff] [blame] | 1495 | |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1496 | prev = crt; |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1497 | crt = crt->next; |
| 1498 | memset( crt, 0, sizeof( x509_cert ) ); |
Paul Bakker | 320a4b5 | 2009-03-28 18:52:39 +0000 | [diff] [blame] | 1499 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1500 | |
Paul Bakker | 42c6581 | 2013-06-24 19:21:59 +0200 | [diff] [blame] | 1501 | if( ( ret = x509parse_crt_der_core( crt, buf, buflen ) ) != 0 ) |
| 1502 | { |
| 1503 | if( prev ) |
| 1504 | prev->next = NULL; |
| 1505 | |
| 1506 | if( crt != chain ) |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 1507 | polarssl_free( crt ); |
Paul Bakker | 42c6581 | 2013-06-24 19:21:59 +0200 | [diff] [blame] | 1508 | |
| 1509 | return( ret ); |
| 1510 | } |
| 1511 | |
| 1512 | return( 0 ); |
| 1513 | } |
| 1514 | |
| 1515 | /* |
| 1516 | * Parse one or more PEM certificates from a buffer and add them to the chained list |
| 1517 | */ |
| 1518 | int x509parse_crt( x509_cert *chain, const unsigned char *buf, size_t buflen ) |
| 1519 | { |
| 1520 | int ret, success = 0, first_error = 0, total_failed = 0; |
| 1521 | int buf_format = X509_FORMAT_DER; |
| 1522 | |
| 1523 | /* |
| 1524 | * Check for valid input |
| 1525 | */ |
| 1526 | if( chain == NULL || buf == NULL ) |
| 1527 | return( POLARSSL_ERR_X509_INVALID_INPUT ); |
| 1528 | |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1529 | /* |
| 1530 | * Determine buffer content. Buffer contains either one DER certificate or |
| 1531 | * one or more PEM certificates. |
| 1532 | */ |
| 1533 | #if defined(POLARSSL_PEM_C) |
Paul Bakker | 3c2122f | 2013-06-24 19:03:14 +0200 | [diff] [blame] | 1534 | if( strstr( (const char *) buf, "-----BEGIN CERTIFICATE-----" ) != NULL ) |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1535 | buf_format = X509_FORMAT_PEM; |
| 1536 | #endif |
| 1537 | |
| 1538 | if( buf_format == X509_FORMAT_DER ) |
Paul Bakker | 42c6581 | 2013-06-24 19:21:59 +0200 | [diff] [blame] | 1539 | return x509parse_crt_der( chain, buf, buflen ); |
| 1540 | |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1541 | #if defined(POLARSSL_PEM_C) |
| 1542 | if( buf_format == X509_FORMAT_PEM ) |
| 1543 | { |
| 1544 | pem_context pem; |
| 1545 | |
| 1546 | while( buflen > 0 ) |
| 1547 | { |
| 1548 | size_t use_len; |
| 1549 | pem_init( &pem ); |
| 1550 | |
| 1551 | ret = pem_read_buffer( &pem, |
| 1552 | "-----BEGIN CERTIFICATE-----", |
| 1553 | "-----END CERTIFICATE-----", |
| 1554 | buf, NULL, 0, &use_len ); |
| 1555 | |
| 1556 | if( ret == 0 ) |
| 1557 | { |
| 1558 | /* |
| 1559 | * Was PEM encoded |
| 1560 | */ |
| 1561 | buflen -= use_len; |
| 1562 | buf += use_len; |
| 1563 | } |
Paul Bakker | 5ed3b34 | 2013-06-24 19:05:46 +0200 | [diff] [blame] | 1564 | else if( ret == POLARSSL_ERR_PEM_BAD_INPUT_DATA ) |
| 1565 | { |
| 1566 | return( ret ); |
| 1567 | } |
Paul Bakker | 00b2860 | 2013-06-24 13:02:41 +0200 | [diff] [blame] | 1568 | else if( ret != POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT ) |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1569 | { |
| 1570 | pem_free( &pem ); |
| 1571 | |
Paul Bakker | 5ed3b34 | 2013-06-24 19:05:46 +0200 | [diff] [blame] | 1572 | /* |
| 1573 | * PEM header and footer were found |
| 1574 | */ |
| 1575 | buflen -= use_len; |
| 1576 | buf += use_len; |
| 1577 | |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1578 | if( first_error == 0 ) |
| 1579 | first_error = ret; |
| 1580 | |
| 1581 | continue; |
| 1582 | } |
| 1583 | else |
| 1584 | break; |
| 1585 | |
Paul Bakker | 42c6581 | 2013-06-24 19:21:59 +0200 | [diff] [blame] | 1586 | ret = x509parse_crt_der( chain, pem.buf, pem.buflen ); |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1587 | |
| 1588 | pem_free( &pem ); |
| 1589 | |
| 1590 | if( ret != 0 ) |
| 1591 | { |
| 1592 | /* |
Paul Bakker | 42c6581 | 2013-06-24 19:21:59 +0200 | [diff] [blame] | 1593 | * Quit parsing on a memory error |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1594 | */ |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 1595 | if( ret == POLARSSL_ERR_X509_MALLOC_FAILED ) |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1596 | return( ret ); |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1597 | |
| 1598 | if( first_error == 0 ) |
| 1599 | first_error = ret; |
| 1600 | |
Paul Bakker | 42c6581 | 2013-06-24 19:21:59 +0200 | [diff] [blame] | 1601 | total_failed++; |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1602 | continue; |
| 1603 | } |
| 1604 | |
| 1605 | success = 1; |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1606 | } |
| 1607 | } |
| 1608 | #endif |
| 1609 | |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1610 | if( success ) |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 1611 | return( total_failed ); |
Paul Bakker | 6c0ceb3 | 2011-12-04 12:24:18 +0000 | [diff] [blame] | 1612 | else if( first_error ) |
| 1613 | return( first_error ); |
| 1614 | else |
| 1615 | return( POLARSSL_ERR_X509_CERT_UNKNOWN_FORMAT ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1616 | } |
| 1617 | |
| 1618 | /* |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1619 | * Parse one or more CRLs and add them to the chained list |
| 1620 | */ |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 1621 | int x509parse_crl( x509_crl *chain, const unsigned char *buf, size_t buflen ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1622 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 1623 | int ret; |
Paul Bakker | 5690efc | 2011-05-26 13:16:06 +0000 | [diff] [blame] | 1624 | size_t len; |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1625 | unsigned char *p, *end; |
| 1626 | x509_crl *crl; |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 1627 | #if defined(POLARSSL_PEM_C) |
Paul Bakker | 5690efc | 2011-05-26 13:16:06 +0000 | [diff] [blame] | 1628 | size_t use_len; |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 1629 | pem_context pem; |
| 1630 | #endif |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1631 | |
| 1632 | crl = chain; |
| 1633 | |
| 1634 | /* |
| 1635 | * Check for valid input |
| 1636 | */ |
| 1637 | if( crl == NULL || buf == NULL ) |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 1638 | return( POLARSSL_ERR_X509_INVALID_INPUT ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1639 | |
| 1640 | while( crl->version != 0 && crl->next != NULL ) |
| 1641 | crl = crl->next; |
| 1642 | |
| 1643 | /* |
| 1644 | * Add new CRL on the end of the chain if needed. |
| 1645 | */ |
| 1646 | if ( crl->version != 0 && crl->next == NULL) |
| 1647 | { |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 1648 | crl->next = (x509_crl *) polarssl_malloc( sizeof( x509_crl ) ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1649 | |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1650 | if( crl->next == NULL ) |
| 1651 | { |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1652 | x509_crl_free( crl ); |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 1653 | return( POLARSSL_ERR_X509_MALLOC_FAILED ); |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1654 | } |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1655 | |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1656 | crl = crl->next; |
| 1657 | memset( crl, 0, sizeof( x509_crl ) ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1658 | } |
| 1659 | |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 1660 | #if defined(POLARSSL_PEM_C) |
| 1661 | pem_init( &pem ); |
| 1662 | ret = pem_read_buffer( &pem, |
| 1663 | "-----BEGIN X509 CRL-----", |
| 1664 | "-----END X509 CRL-----", |
| 1665 | buf, NULL, 0, &use_len ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1666 | |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 1667 | if( ret == 0 ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1668 | { |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 1669 | /* |
| 1670 | * Was PEM encoded |
| 1671 | */ |
| 1672 | buflen -= use_len; |
| 1673 | buf += use_len; |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1674 | |
| 1675 | /* |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 1676 | * Steal PEM buffer |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1677 | */ |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 1678 | p = pem.buf; |
| 1679 | pem.buf = NULL; |
| 1680 | len = pem.buflen; |
| 1681 | pem_free( &pem ); |
| 1682 | } |
Paul Bakker | 00b2860 | 2013-06-24 13:02:41 +0200 | [diff] [blame] | 1683 | else if( ret != POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT ) |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 1684 | { |
| 1685 | pem_free( &pem ); |
| 1686 | return( ret ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1687 | } |
| 1688 | else |
| 1689 | { |
| 1690 | /* |
| 1691 | * nope, copy the raw DER data |
| 1692 | */ |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 1693 | p = (unsigned char *) polarssl_malloc( len = buflen ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1694 | |
| 1695 | if( p == NULL ) |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 1696 | return( POLARSSL_ERR_X509_MALLOC_FAILED ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1697 | |
| 1698 | memcpy( p, buf, buflen ); |
| 1699 | |
| 1700 | buflen = 0; |
| 1701 | } |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 1702 | #else |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 1703 | p = (unsigned char *) polarssl_malloc( len = buflen ); |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 1704 | |
| 1705 | if( p == NULL ) |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 1706 | return( POLARSSL_ERR_X509_MALLOC_FAILED ); |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 1707 | |
| 1708 | memcpy( p, buf, buflen ); |
| 1709 | |
| 1710 | buflen = 0; |
| 1711 | #endif |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1712 | |
| 1713 | crl->raw.p = p; |
| 1714 | crl->raw.len = len; |
| 1715 | end = p + len; |
| 1716 | |
| 1717 | /* |
| 1718 | * CertificateList ::= SEQUENCE { |
| 1719 | * tbsCertList TBSCertList, |
| 1720 | * signatureAlgorithm AlgorithmIdentifier, |
| 1721 | * signatureValue BIT STRING } |
| 1722 | */ |
| 1723 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 1724 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 1725 | { |
| 1726 | x509_crl_free( crl ); |
| 1727 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT ); |
| 1728 | } |
| 1729 | |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 1730 | if( len != (size_t) ( end - p ) ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1731 | { |
| 1732 | x509_crl_free( crl ); |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1733 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT + |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1734 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
| 1735 | } |
| 1736 | |
| 1737 | /* |
| 1738 | * TBSCertList ::= SEQUENCE { |
| 1739 | */ |
| 1740 | crl->tbs.p = p; |
| 1741 | |
| 1742 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 1743 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 1744 | { |
| 1745 | x509_crl_free( crl ); |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1746 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT + ret ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1747 | } |
| 1748 | |
| 1749 | end = p + len; |
| 1750 | crl->tbs.len = end - crl->tbs.p; |
| 1751 | |
| 1752 | /* |
| 1753 | * Version ::= INTEGER OPTIONAL { v1(0), v2(1) } |
| 1754 | * -- if present, MUST be v2 |
| 1755 | * |
| 1756 | * signature AlgorithmIdentifier |
| 1757 | */ |
Paul Bakker | 3329d1f | 2011-10-12 09:55:01 +0000 | [diff] [blame] | 1758 | if( ( ret = x509_crl_get_version( &p, end, &crl->version ) ) != 0 || |
Manuel Pégourié-Gonnard | a155513 | 2013-07-10 13:18:41 +0200 | [diff] [blame] | 1759 | ( ret = x509_get_alg_null( &p, end, &crl->sig_oid1 ) ) != 0 ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1760 | { |
| 1761 | x509_crl_free( crl ); |
| 1762 | return( ret ); |
| 1763 | } |
| 1764 | |
| 1765 | crl->version++; |
| 1766 | |
| 1767 | if( crl->version > 2 ) |
| 1768 | { |
| 1769 | x509_crl_free( crl ); |
| 1770 | return( POLARSSL_ERR_X509_CERT_UNKNOWN_VERSION ); |
| 1771 | } |
| 1772 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 1773 | if( ( ret = x509_get_sig_alg( &crl->sig_oid1, &crl->sig_md, |
| 1774 | &crl->sig_pk ) ) != 0 ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1775 | { |
| 1776 | x509_crl_free( crl ); |
| 1777 | return( POLARSSL_ERR_X509_CERT_UNKNOWN_SIG_ALG ); |
| 1778 | } |
| 1779 | |
| 1780 | /* |
| 1781 | * issuer Name |
| 1782 | */ |
| 1783 | crl->issuer_raw.p = p; |
| 1784 | |
| 1785 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 1786 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 1787 | { |
| 1788 | x509_crl_free( crl ); |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1789 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT + ret ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1790 | } |
| 1791 | |
| 1792 | if( ( ret = x509_get_name( &p, p + len, &crl->issuer ) ) != 0 ) |
| 1793 | { |
| 1794 | x509_crl_free( crl ); |
| 1795 | return( ret ); |
| 1796 | } |
| 1797 | |
| 1798 | crl->issuer_raw.len = p - crl->issuer_raw.p; |
| 1799 | |
| 1800 | /* |
| 1801 | * thisUpdate Time |
| 1802 | * nextUpdate Time OPTIONAL |
| 1803 | */ |
Paul Bakker | 9120018 | 2010-02-18 21:26:15 +0000 | [diff] [blame] | 1804 | if( ( ret = x509_get_time( &p, end, &crl->this_update ) ) != 0 ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1805 | { |
| 1806 | x509_crl_free( crl ); |
| 1807 | return( ret ); |
| 1808 | } |
| 1809 | |
Paul Bakker | 9120018 | 2010-02-18 21:26:15 +0000 | [diff] [blame] | 1810 | if( ( ret = x509_get_time( &p, end, &crl->next_update ) ) != 0 ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1811 | { |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1812 | if ( ret != ( POLARSSL_ERR_X509_CERT_INVALID_DATE + |
Paul Bakker | 9be1937 | 2009-07-27 20:21:53 +0000 | [diff] [blame] | 1813 | POLARSSL_ERR_ASN1_UNEXPECTED_TAG ) && |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1814 | ret != ( POLARSSL_ERR_X509_CERT_INVALID_DATE + |
Paul Bakker | 9be1937 | 2009-07-27 20:21:53 +0000 | [diff] [blame] | 1815 | POLARSSL_ERR_ASN1_OUT_OF_DATA ) ) |
Paul Bakker | 635f4b4 | 2009-07-20 20:34:41 +0000 | [diff] [blame] | 1816 | { |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1817 | x509_crl_free( crl ); |
| 1818 | return( ret ); |
| 1819 | } |
| 1820 | } |
| 1821 | |
| 1822 | /* |
| 1823 | * revokedCertificates SEQUENCE OF SEQUENCE { |
| 1824 | * userCertificate CertificateSerialNumber, |
| 1825 | * revocationDate Time, |
| 1826 | * crlEntryExtensions Extensions OPTIONAL |
| 1827 | * -- if present, MUST be v2 |
| 1828 | * } OPTIONAL |
| 1829 | */ |
| 1830 | if( ( ret = x509_get_entries( &p, end, &crl->entry ) ) != 0 ) |
| 1831 | { |
| 1832 | x509_crl_free( crl ); |
| 1833 | return( ret ); |
| 1834 | } |
| 1835 | |
| 1836 | /* |
| 1837 | * crlExtensions EXPLICIT Extensions OPTIONAL |
| 1838 | * -- if present, MUST be v2 |
| 1839 | */ |
| 1840 | if( crl->version == 2 ) |
| 1841 | { |
| 1842 | ret = x509_get_crl_ext( &p, end, &crl->crl_ext ); |
| 1843 | |
| 1844 | if( ret != 0 ) |
| 1845 | { |
| 1846 | x509_crl_free( crl ); |
| 1847 | return( ret ); |
| 1848 | } |
| 1849 | } |
| 1850 | |
| 1851 | if( p != end ) |
| 1852 | { |
| 1853 | x509_crl_free( crl ); |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1854 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT + |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1855 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
| 1856 | } |
| 1857 | |
| 1858 | end = crl->raw.p + crl->raw.len; |
| 1859 | |
| 1860 | /* |
| 1861 | * signatureAlgorithm AlgorithmIdentifier, |
| 1862 | * signatureValue BIT STRING |
| 1863 | */ |
Manuel Pégourié-Gonnard | a155513 | 2013-07-10 13:18:41 +0200 | [diff] [blame] | 1864 | if( ( ret = x509_get_alg_null( &p, end, &crl->sig_oid2 ) ) != 0 ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1865 | { |
| 1866 | x509_crl_free( crl ); |
| 1867 | return( ret ); |
| 1868 | } |
| 1869 | |
Paul Bakker | 535e97d | 2012-08-23 10:49:55 +0000 | [diff] [blame] | 1870 | if( crl->sig_oid1.len != crl->sig_oid2.len || |
| 1871 | memcmp( crl->sig_oid1.p, crl->sig_oid2.p, crl->sig_oid1.len ) != 0 ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1872 | { |
| 1873 | x509_crl_free( crl ); |
| 1874 | return( POLARSSL_ERR_X509_CERT_SIG_MISMATCH ); |
| 1875 | } |
| 1876 | |
| 1877 | if( ( ret = x509_get_sig( &p, end, &crl->sig ) ) != 0 ) |
| 1878 | { |
| 1879 | x509_crl_free( crl ); |
| 1880 | return( ret ); |
| 1881 | } |
| 1882 | |
| 1883 | if( p != end ) |
| 1884 | { |
| 1885 | x509_crl_free( crl ); |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 1886 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT + |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1887 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
| 1888 | } |
| 1889 | |
| 1890 | if( buflen > 0 ) |
| 1891 | { |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 1892 | crl->next = (x509_crl *) polarssl_malloc( sizeof( x509_crl ) ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1893 | |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1894 | if( crl->next == NULL ) |
| 1895 | { |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1896 | x509_crl_free( crl ); |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 1897 | return( POLARSSL_ERR_X509_MALLOC_FAILED ); |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1898 | } |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1899 | |
Paul Bakker | 7d06ad2 | 2009-05-02 15:53:56 +0000 | [diff] [blame] | 1900 | crl = crl->next; |
| 1901 | memset( crl, 0, sizeof( x509_crl ) ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1902 | |
| 1903 | return( x509parse_crl( crl, buf, buflen ) ); |
| 1904 | } |
| 1905 | |
| 1906 | return( 0 ); |
| 1907 | } |
| 1908 | |
Paul Bakker | 335db3f | 2011-04-25 15:28:35 +0000 | [diff] [blame] | 1909 | #if defined(POLARSSL_FS_IO) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1910 | /* |
Paul Bakker | 2b245eb | 2009-04-19 18:44:26 +0000 | [diff] [blame] | 1911 | * Load all data from a file into a given buffer. |
| 1912 | */ |
Paul Bakker | b6c5d2e | 2013-06-25 16:25:17 +0200 | [diff] [blame] | 1913 | static int load_file( const char *path, unsigned char **buf, size_t *n ) |
Paul Bakker | 2b245eb | 2009-04-19 18:44:26 +0000 | [diff] [blame] | 1914 | { |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1915 | FILE *f; |
Paul Bakker | 2b245eb | 2009-04-19 18:44:26 +0000 | [diff] [blame] | 1916 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1917 | if( ( f = fopen( path, "rb" ) ) == NULL ) |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 1918 | return( POLARSSL_ERR_X509_FILE_IO_ERROR ); |
Paul Bakker | 2b245eb | 2009-04-19 18:44:26 +0000 | [diff] [blame] | 1919 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1920 | fseek( f, 0, SEEK_END ); |
| 1921 | *n = (size_t) ftell( f ); |
| 1922 | fseek( f, 0, SEEK_SET ); |
Paul Bakker | 2b245eb | 2009-04-19 18:44:26 +0000 | [diff] [blame] | 1923 | |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 1924 | if( ( *buf = (unsigned char *) polarssl_malloc( *n + 1 ) ) == NULL ) |
Paul Bakker | f6a19bd | 2013-05-14 13:26:51 +0200 | [diff] [blame] | 1925 | { |
| 1926 | fclose( f ); |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 1927 | return( POLARSSL_ERR_X509_MALLOC_FAILED ); |
Paul Bakker | f6a19bd | 2013-05-14 13:26:51 +0200 | [diff] [blame] | 1928 | } |
Paul Bakker | 2b245eb | 2009-04-19 18:44:26 +0000 | [diff] [blame] | 1929 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1930 | if( fread( *buf, 1, *n, f ) != *n ) |
| 1931 | { |
| 1932 | fclose( f ); |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 1933 | polarssl_free( *buf ); |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 1934 | return( POLARSSL_ERR_X509_FILE_IO_ERROR ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1935 | } |
Paul Bakker | 2b245eb | 2009-04-19 18:44:26 +0000 | [diff] [blame] | 1936 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1937 | fclose( f ); |
Paul Bakker | 2b245eb | 2009-04-19 18:44:26 +0000 | [diff] [blame] | 1938 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1939 | (*buf)[*n] = '\0'; |
Paul Bakker | 2b245eb | 2009-04-19 18:44:26 +0000 | [diff] [blame] | 1940 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 1941 | return( 0 ); |
Paul Bakker | 2b245eb | 2009-04-19 18:44:26 +0000 | [diff] [blame] | 1942 | } |
| 1943 | |
| 1944 | /* |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1945 | * Load one or more certificates and add them to the chained list |
| 1946 | */ |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 1947 | int x509parse_crtfile( x509_cert *chain, const char *path ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1948 | { |
| 1949 | int ret; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1950 | size_t n; |
| 1951 | unsigned char *buf; |
| 1952 | |
Manuel Pégourié-Gonnard | 4250a1f | 2013-06-27 13:00:00 +0200 | [diff] [blame] | 1953 | if ( ( ret = load_file( path, &buf, &n ) ) != 0 ) |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 1954 | return( ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1955 | |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 1956 | ret = x509parse_crt( chain, buf, n ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1957 | |
| 1958 | memset( buf, 0, n + 1 ); |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 1959 | polarssl_free( buf ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1960 | |
| 1961 | return( ret ); |
| 1962 | } |
| 1963 | |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 1964 | int x509parse_crtpath( x509_cert *chain, const char *path ) |
| 1965 | { |
| 1966 | int ret = 0; |
| 1967 | #if defined(_WIN32) |
Paul Bakker | 3338b79 | 2012-10-01 21:13:10 +0000 | [diff] [blame] | 1968 | int w_ret; |
| 1969 | WCHAR szDir[MAX_PATH]; |
| 1970 | char filename[MAX_PATH]; |
| 1971 | char *p; |
Paul Bakker | 4a2bd0d | 2012-11-02 11:06:08 +0000 | [diff] [blame] | 1972 | int len = strlen( path ); |
Paul Bakker | 3338b79 | 2012-10-01 21:13:10 +0000 | [diff] [blame] | 1973 | |
Paul Bakker | 97872ac | 2012-11-02 12:53:26 +0000 | [diff] [blame] | 1974 | WIN32_FIND_DATAW file_data; |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 1975 | HANDLE hFind; |
Paul Bakker | 4a2bd0d | 2012-11-02 11:06:08 +0000 | [diff] [blame] | 1976 | |
| 1977 | if( len > MAX_PATH - 3 ) |
| 1978 | return( POLARSSL_ERR_X509_INVALID_INPUT ); |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 1979 | |
Paul Bakker | 3338b79 | 2012-10-01 21:13:10 +0000 | [diff] [blame] | 1980 | memset( szDir, 0, sizeof(szDir) ); |
| 1981 | memset( filename, 0, MAX_PATH ); |
Paul Bakker | 4a2bd0d | 2012-11-02 11:06:08 +0000 | [diff] [blame] | 1982 | memcpy( filename, path, len ); |
| 1983 | filename[len++] = '\\'; |
| 1984 | p = filename + len; |
| 1985 | filename[len++] = '*'; |
Paul Bakker | 3338b79 | 2012-10-01 21:13:10 +0000 | [diff] [blame] | 1986 | |
Paul Bakker | 4a2bd0d | 2012-11-02 11:06:08 +0000 | [diff] [blame] | 1987 | w_ret = MultiByteToWideChar( CP_ACP, 0, path, len, szDir, MAX_PATH - 3 ); |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 1988 | |
Paul Bakker | 97872ac | 2012-11-02 12:53:26 +0000 | [diff] [blame] | 1989 | hFind = FindFirstFileW( szDir, &file_data ); |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 1990 | if (hFind == INVALID_HANDLE_VALUE) |
| 1991 | return( POLARSSL_ERR_X509_FILE_IO_ERROR ); |
| 1992 | |
Paul Bakker | 4a2bd0d | 2012-11-02 11:06:08 +0000 | [diff] [blame] | 1993 | len = MAX_PATH - len; |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 1994 | do |
| 1995 | { |
Paul Bakker | 4a2bd0d | 2012-11-02 11:06:08 +0000 | [diff] [blame] | 1996 | memset( p, 0, len ); |
Paul Bakker | 3338b79 | 2012-10-01 21:13:10 +0000 | [diff] [blame] | 1997 | |
Paul Bakker | e4791f3 | 2012-06-04 21:29:15 +0000 | [diff] [blame] | 1998 | if( file_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ) |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 1999 | continue; |
| 2000 | |
Paul Bakker | 3338b79 | 2012-10-01 21:13:10 +0000 | [diff] [blame] | 2001 | w_ret = WideCharToMultiByte( CP_ACP, 0, file_data.cFileName, |
| 2002 | lstrlenW(file_data.cFileName), |
Paul Bakker | 4a2bd0d | 2012-11-02 11:06:08 +0000 | [diff] [blame] | 2003 | p, len - 1, |
| 2004 | NULL, NULL ); |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 2005 | |
Paul Bakker | 3338b79 | 2012-10-01 21:13:10 +0000 | [diff] [blame] | 2006 | w_ret = x509parse_crtfile( chain, filename ); |
| 2007 | if( w_ret < 0 ) |
Paul Bakker | 2c8cdd2 | 2013-06-24 19:22:42 +0200 | [diff] [blame] | 2008 | ret++; |
| 2009 | else |
| 2010 | ret += w_ret; |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 2011 | } |
Paul Bakker | 97872ac | 2012-11-02 12:53:26 +0000 | [diff] [blame] | 2012 | while( FindNextFileW( hFind, &file_data ) != 0 ); |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 2013 | |
Paul Bakker | 4a2bd0d | 2012-11-02 11:06:08 +0000 | [diff] [blame] | 2014 | if (GetLastError() != ERROR_NO_MORE_FILES) |
| 2015 | ret = POLARSSL_ERR_X509_FILE_IO_ERROR; |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 2016 | |
Paul Bakker | 4a2bd0d | 2012-11-02 11:06:08 +0000 | [diff] [blame] | 2017 | cleanup: |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 2018 | FindClose( hFind ); |
| 2019 | #else |
Paul Bakker | 2c8cdd2 | 2013-06-24 19:22:42 +0200 | [diff] [blame] | 2020 | int t_ret, i; |
| 2021 | struct stat sb; |
| 2022 | struct dirent entry, *result = NULL; |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 2023 | char entry_name[255]; |
| 2024 | DIR *dir = opendir( path ); |
| 2025 | |
| 2026 | if( dir == NULL) |
| 2027 | return( POLARSSL_ERR_X509_FILE_IO_ERROR ); |
| 2028 | |
Paul Bakker | 2c8cdd2 | 2013-06-24 19:22:42 +0200 | [diff] [blame] | 2029 | while( ( t_ret = readdir_r( dir, &entry, &result ) ) == 0 ) |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 2030 | { |
Paul Bakker | 2c8cdd2 | 2013-06-24 19:22:42 +0200 | [diff] [blame] | 2031 | if( result == NULL ) |
| 2032 | break; |
| 2033 | |
| 2034 | snprintf( entry_name, sizeof(entry_name), "%s/%s", path, entry.d_name ); |
| 2035 | |
| 2036 | i = stat( entry_name, &sb ); |
| 2037 | |
| 2038 | if( i == -1 ) |
| 2039 | return( POLARSSL_ERR_X509_FILE_IO_ERROR ); |
| 2040 | |
| 2041 | if( !S_ISREG( sb.st_mode ) ) |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 2042 | continue; |
| 2043 | |
Paul Bakker | 2c8cdd2 | 2013-06-24 19:22:42 +0200 | [diff] [blame] | 2044 | // Ignore parse errors |
| 2045 | // |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 2046 | t_ret = x509parse_crtfile( chain, entry_name ); |
| 2047 | if( t_ret < 0 ) |
Paul Bakker | 2c8cdd2 | 2013-06-24 19:22:42 +0200 | [diff] [blame] | 2048 | ret++; |
| 2049 | else |
| 2050 | ret += t_ret; |
Paul Bakker | 8d91458 | 2012-06-04 12:46:42 +0000 | [diff] [blame] | 2051 | } |
| 2052 | closedir( dir ); |
| 2053 | #endif |
| 2054 | |
| 2055 | return( ret ); |
| 2056 | } |
| 2057 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 2058 | /* |
| 2059 | * Load one or more CRLs and add them to the chained list |
| 2060 | */ |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 2061 | int x509parse_crlfile( x509_crl *chain, const char *path ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 2062 | { |
| 2063 | int ret; |
| 2064 | size_t n; |
| 2065 | unsigned char *buf; |
| 2066 | |
Manuel Pégourié-Gonnard | 4250a1f | 2013-06-27 13:00:00 +0200 | [diff] [blame] | 2067 | if ( ( ret = load_file( path, &buf, &n ) ) != 0 ) |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 2068 | return( ret ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 2069 | |
Paul Bakker | 27fdf46 | 2011-06-09 13:55:13 +0000 | [diff] [blame] | 2070 | ret = x509parse_crl( chain, buf, n ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 2071 | |
| 2072 | memset( buf, 0, n + 1 ); |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 2073 | polarssl_free( buf ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 2074 | |
| 2075 | return( ret ); |
| 2076 | } |
| 2077 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2078 | /* |
Manuel Pégourié-Gonnard | 8838099 | 2013-07-04 14:09:57 +0200 | [diff] [blame] | 2079 | * Load and parse a private key |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2080 | */ |
Manuel Pégourié-Gonnard | 8838099 | 2013-07-04 14:09:57 +0200 | [diff] [blame] | 2081 | int x509parse_keyfile( pk_context *ctx, |
| 2082 | const char *path, const char *pwd ) |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2083 | { |
| 2084 | int ret; |
| 2085 | size_t n; |
| 2086 | unsigned char *buf; |
| 2087 | |
| 2088 | if ( (ret = load_file( path, &buf, &n ) ) != 0 ) |
| 2089 | return( ret ); |
| 2090 | |
| 2091 | if( pwd == NULL ) |
Manuel Pégourié-Gonnard | 8838099 | 2013-07-04 14:09:57 +0200 | [diff] [blame] | 2092 | ret = x509parse_key( ctx, buf, n, NULL, 0 ); |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2093 | else |
Manuel Pégourié-Gonnard | 8838099 | 2013-07-04 14:09:57 +0200 | [diff] [blame] | 2094 | ret = x509parse_key( ctx, buf, n, |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2095 | (const unsigned char *) pwd, strlen( pwd ) ); |
| 2096 | |
| 2097 | memset( buf, 0, n + 1 ); |
Paul Bakker | d9ca94a | 2013-07-25 11:25:09 +0200 | [diff] [blame] | 2098 | polarssl_free( buf ); |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2099 | |
| 2100 | return( ret ); |
| 2101 | } |
| 2102 | |
| 2103 | /* |
Manuel Pégourié-Gonnard | 8838099 | 2013-07-04 14:09:57 +0200 | [diff] [blame] | 2104 | * Load and parse a public key |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2105 | */ |
Manuel Pégourié-Gonnard | 8838099 | 2013-07-04 14:09:57 +0200 | [diff] [blame] | 2106 | int x509parse_public_keyfile( pk_context *ctx, const char *path ) |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2107 | { |
| 2108 | int ret; |
| 2109 | size_t n; |
| 2110 | unsigned char *buf; |
| 2111 | |
| 2112 | if ( (ret = load_file( path, &buf, &n ) ) != 0 ) |
| 2113 | return( ret ); |
| 2114 | |
Manuel Pégourié-Gonnard | 8838099 | 2013-07-04 14:09:57 +0200 | [diff] [blame] | 2115 | ret = x509parse_public_key( ctx, buf, n ); |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2116 | |
| 2117 | memset( buf, 0, n + 1 ); |
Paul Bakker | d9ca94a | 2013-07-25 11:25:09 +0200 | [diff] [blame] | 2118 | polarssl_free( buf ); |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2119 | |
| 2120 | return( ret ); |
| 2121 | } |
Manuel Pégourié-Gonnard | 8838099 | 2013-07-04 14:09:57 +0200 | [diff] [blame] | 2122 | |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2123 | #if defined(POLARSSL_RSA_C) |
| 2124 | /* |
| 2125 | * Load and parse a private RSA key |
| 2126 | */ |
| 2127 | int x509parse_keyfile_rsa( rsa_context *rsa, const char *path, const char *pwd ) |
| 2128 | { |
| 2129 | pk_context pk; |
| 2130 | |
| 2131 | pk_init( &pk ); |
| 2132 | pk_wrap_rsa( &pk, rsa ); |
| 2133 | |
| 2134 | return( x509parse_keyfile( &pk, path, pwd ) ); |
| 2135 | } |
| 2136 | |
| 2137 | /* |
| 2138 | * Load and parse a public RSA key |
| 2139 | */ |
| 2140 | int x509parse_public_keyfile_rsa( rsa_context *rsa, const char *path ) |
| 2141 | { |
| 2142 | pk_context pk; |
| 2143 | |
| 2144 | pk_init( &pk ); |
| 2145 | pk_wrap_rsa( &pk, rsa ); |
| 2146 | |
| 2147 | return( x509parse_public_keyfile( &pk, path ) ); |
| 2148 | } |
| 2149 | #endif /* POLARSSL_RSA_C */ |
Paul Bakker | 335db3f | 2011-04-25 15:28:35 +0000 | [diff] [blame] | 2150 | #endif /* POLARSSL_FS_IO */ |
| 2151 | |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2152 | #if defined(POLARSSL_RSA_C) |
Paul Bakker | 335db3f | 2011-04-25 15:28:35 +0000 | [diff] [blame] | 2153 | /* |
Paul Bakker | e2f5040 | 2013-06-24 19:00:59 +0200 | [diff] [blame] | 2154 | * Parse a PKCS#1 encoded private RSA key |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2155 | */ |
Paul Bakker | e2f5040 | 2013-06-24 19:00:59 +0200 | [diff] [blame] | 2156 | static int x509parse_key_pkcs1_der( rsa_context *rsa, |
| 2157 | const unsigned char *key, |
| 2158 | size_t keylen ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2159 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 2160 | int ret; |
| 2161 | size_t len; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2162 | unsigned char *p, *end; |
Paul Bakker | ed56b22 | 2011-07-13 11:26:43 +0000 | [diff] [blame] | 2163 | |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 2164 | p = (unsigned char *) key; |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 2165 | end = p + keylen; |
| 2166 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2167 | /* |
Paul Bakker | e2f5040 | 2013-06-24 19:00:59 +0200 | [diff] [blame] | 2168 | * This function parses the RSAPrivateKey (PKCS#1) |
Paul Bakker | ed56b22 | 2011-07-13 11:26:43 +0000 | [diff] [blame] | 2169 | * |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2170 | * RSAPrivateKey ::= SEQUENCE { |
| 2171 | * version Version, |
| 2172 | * modulus INTEGER, -- n |
| 2173 | * publicExponent INTEGER, -- e |
| 2174 | * privateExponent INTEGER, -- d |
| 2175 | * prime1 INTEGER, -- p |
| 2176 | * prime2 INTEGER, -- q |
| 2177 | * exponent1 INTEGER, -- d mod (p-1) |
| 2178 | * exponent2 INTEGER, -- d mod (q-1) |
| 2179 | * coefficient INTEGER, -- (inverse of q) mod p |
| 2180 | * otherPrimeInfos OtherPrimeInfos OPTIONAL |
| 2181 | * } |
| 2182 | */ |
| 2183 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 2184 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 2185 | { |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 2186 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2187 | } |
| 2188 | |
| 2189 | end = p + len; |
| 2190 | |
| 2191 | if( ( ret = asn1_get_int( &p, end, &rsa->ver ) ) != 0 ) |
| 2192 | { |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 2193 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2194 | } |
| 2195 | |
| 2196 | if( rsa->ver != 0 ) |
| 2197 | { |
Manuel Pégourié-Gonnard | e366342 | 2013-07-03 18:56:37 +0200 | [diff] [blame] | 2198 | return( POLARSSL_ERR_X509_KEY_INVALID_VERSION ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2199 | } |
| 2200 | |
| 2201 | if( ( ret = asn1_get_mpi( &p, end, &rsa->N ) ) != 0 || |
| 2202 | ( ret = asn1_get_mpi( &p, end, &rsa->E ) ) != 0 || |
| 2203 | ( ret = asn1_get_mpi( &p, end, &rsa->D ) ) != 0 || |
| 2204 | ( ret = asn1_get_mpi( &p, end, &rsa->P ) ) != 0 || |
| 2205 | ( ret = asn1_get_mpi( &p, end, &rsa->Q ) ) != 0 || |
| 2206 | ( ret = asn1_get_mpi( &p, end, &rsa->DP ) ) != 0 || |
| 2207 | ( ret = asn1_get_mpi( &p, end, &rsa->DQ ) ) != 0 || |
| 2208 | ( ret = asn1_get_mpi( &p, end, &rsa->QP ) ) != 0 ) |
| 2209 | { |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2210 | rsa_free( rsa ); |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 2211 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2212 | } |
| 2213 | |
| 2214 | rsa->len = mpi_size( &rsa->N ); |
| 2215 | |
| 2216 | if( p != end ) |
| 2217 | { |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2218 | rsa_free( rsa ); |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 2219 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 2220 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2221 | } |
| 2222 | |
| 2223 | if( ( ret = rsa_check_privkey( rsa ) ) != 0 ) |
| 2224 | { |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2225 | rsa_free( rsa ); |
| 2226 | return( ret ); |
| 2227 | } |
| 2228 | |
Paul Bakker | e2f5040 | 2013-06-24 19:00:59 +0200 | [diff] [blame] | 2229 | return( 0 ); |
| 2230 | } |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2231 | #endif /* POLARSSL_RSA_C */ |
Manuel Pégourié-Gonnard | 6e88202 | 2013-07-11 14:55:43 +0200 | [diff] [blame] | 2232 | |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2233 | #if defined(POLARSSL_ECP_C) |
Paul Bakker | e2f5040 | 2013-06-24 19:00:59 +0200 | [diff] [blame] | 2234 | /* |
Manuel Pégourié-Gonnard | 6e88202 | 2013-07-11 14:55:43 +0200 | [diff] [blame] | 2235 | * Parse a SEC1 encoded private EC key |
Paul Bakker | e2f5040 | 2013-06-24 19:00:59 +0200 | [diff] [blame] | 2236 | */ |
Manuel Pégourié-Gonnard | 6e88202 | 2013-07-11 14:55:43 +0200 | [diff] [blame] | 2237 | static int x509parse_key_sec1_der( ecp_keypair *eck, |
| 2238 | const unsigned char *key, |
| 2239 | size_t keylen ) |
Paul Bakker | e2f5040 | 2013-06-24 19:00:59 +0200 | [diff] [blame] | 2240 | { |
| 2241 | int ret; |
Manuel Pégourié-Gonnard | 6e88202 | 2013-07-11 14:55:43 +0200 | [diff] [blame] | 2242 | int version; |
Paul Bakker | e2f5040 | 2013-06-24 19:00:59 +0200 | [diff] [blame] | 2243 | size_t len; |
Manuel Pégourié-Gonnard | 6e88202 | 2013-07-11 14:55:43 +0200 | [diff] [blame] | 2244 | x509_buf params; |
| 2245 | unsigned char *p = (unsigned char *) key; |
| 2246 | unsigned char *end = p + keylen; |
| 2247 | unsigned char *end2; |
Paul Bakker | e2f5040 | 2013-06-24 19:00:59 +0200 | [diff] [blame] | 2248 | |
| 2249 | /* |
Manuel Pégourié-Gonnard | 6e88202 | 2013-07-11 14:55:43 +0200 | [diff] [blame] | 2250 | * RFC 5915, orf SEC1 Appendix C.4 |
Paul Bakker | e2f5040 | 2013-06-24 19:00:59 +0200 | [diff] [blame] | 2251 | * |
Manuel Pégourié-Gonnard | 6e88202 | 2013-07-11 14:55:43 +0200 | [diff] [blame] | 2252 | * ECPrivateKey ::= SEQUENCE { |
| 2253 | * version INTEGER { ecPrivkeyVer1(1) } (ecPrivkeyVer1), |
| 2254 | * privateKey OCTET STRING, |
| 2255 | * parameters [0] ECParameters {{ NamedCurve }} OPTIONAL, |
| 2256 | * publicKey [1] BIT STRING OPTIONAL |
| 2257 | * } |
Paul Bakker | e2f5040 | 2013-06-24 19:00:59 +0200 | [diff] [blame] | 2258 | */ |
| 2259 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 2260 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 2261 | { |
| 2262 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
| 2263 | } |
| 2264 | |
| 2265 | end = p + len; |
| 2266 | |
Manuel Pégourié-Gonnard | 6e88202 | 2013-07-11 14:55:43 +0200 | [diff] [blame] | 2267 | if( ( ret = asn1_get_int( &p, end, &version ) ) != 0 ) |
Paul Bakker | e2f5040 | 2013-06-24 19:00:59 +0200 | [diff] [blame] | 2268 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
| 2269 | |
Manuel Pégourié-Gonnard | 6e88202 | 2013-07-11 14:55:43 +0200 | [diff] [blame] | 2270 | if( version != 1 ) |
| 2271 | return( POLARSSL_ERR_X509_KEY_INVALID_VERSION ); |
Paul Bakker | e2f5040 | 2013-06-24 19:00:59 +0200 | [diff] [blame] | 2272 | |
Paul Bakker | e2f5040 | 2013-06-24 19:00:59 +0200 | [diff] [blame] | 2273 | if( ( ret = asn1_get_tag( &p, end, &len, ASN1_OCTET_STRING ) ) != 0 ) |
| 2274 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
| 2275 | |
Manuel Pégourié-Gonnard | 6e88202 | 2013-07-11 14:55:43 +0200 | [diff] [blame] | 2276 | if( ( ret = mpi_read_binary( &eck->d, p, len ) ) != 0 ) |
Paul Bakker | e2f5040 | 2013-06-24 19:00:59 +0200 | [diff] [blame] | 2277 | { |
Manuel Pégourié-Gonnard | 6e88202 | 2013-07-11 14:55:43 +0200 | [diff] [blame] | 2278 | ecp_keypair_free( eck ); |
| 2279 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
| 2280 | } |
| 2281 | |
| 2282 | p += len; |
| 2283 | |
| 2284 | /* |
| 2285 | * Is 'parameters' present? |
| 2286 | */ |
| 2287 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 2288 | ASN1_CONTEXT_SPECIFIC | ASN1_CONSTRUCTED | 0 ) ) == 0 ) |
| 2289 | { |
| 2290 | if( ( ret = x509_get_ecparams( &p, p + len, ¶ms) ) != 0 || |
| 2291 | ( ret = x509_use_ecparams( ¶ms, &eck->grp ) ) != 0 ) |
| 2292 | { |
| 2293 | ecp_keypair_free( eck ); |
| 2294 | return( ret ); |
| 2295 | } |
| 2296 | } |
| 2297 | else if( ret != POLARSSL_ERR_ASN1_UNEXPECTED_TAG ) |
| 2298 | { |
| 2299 | ecp_keypair_free( eck ); |
| 2300 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
| 2301 | } |
| 2302 | |
| 2303 | /* |
| 2304 | * Is 'publickey' present? |
| 2305 | */ |
| 2306 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 2307 | ASN1_CONTEXT_SPECIFIC | ASN1_CONSTRUCTED | 1 ) ) == 0 ) |
| 2308 | { |
| 2309 | end2 = p + len; |
| 2310 | |
| 2311 | if( ( ret = asn1_get_bitstring_null( &p, end2, &len ) ) != 0 ) |
| 2312 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
| 2313 | |
| 2314 | if( p + len != end2 ) |
| 2315 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + |
| 2316 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
| 2317 | |
| 2318 | if( ( ret = x509_get_ecpubkey( &p, end2, eck ) ) != 0 ) |
| 2319 | return( ret ); |
| 2320 | } |
| 2321 | else if ( ret != POLARSSL_ERR_ASN1_UNEXPECTED_TAG ) |
| 2322 | { |
| 2323 | ecp_keypair_free( eck ); |
| 2324 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
| 2325 | } |
| 2326 | |
| 2327 | if( ( ret = ecp_check_privkey( &eck->grp, &eck->d ) ) != 0 ) |
| 2328 | { |
| 2329 | ecp_keypair_free( eck ); |
| 2330 | return( ret ); |
| 2331 | } |
| 2332 | |
| 2333 | return 0; |
| 2334 | } |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2335 | #endif /* POLARSSL_ECP_C */ |
Manuel Pégourié-Gonnard | 6e88202 | 2013-07-11 14:55:43 +0200 | [diff] [blame] | 2336 | |
| 2337 | /* |
| 2338 | * Parse an unencrypted PKCS#8 encoded private key |
| 2339 | */ |
| 2340 | static int x509parse_key_pkcs8_unencrypted_der( |
| 2341 | pk_context *pk, |
| 2342 | const unsigned char* key, |
| 2343 | size_t keylen ) |
| 2344 | { |
| 2345 | int ret, version; |
| 2346 | size_t len; |
| 2347 | x509_buf params; |
| 2348 | unsigned char *p = (unsigned char *) key; |
| 2349 | unsigned char *end = p + keylen; |
| 2350 | pk_type_t pk_alg = POLARSSL_PK_NONE; |
| 2351 | |
| 2352 | /* |
| 2353 | * This function parses the PrivatKeyInfo object (PKCS#8 v1.2 = RFC 5208) |
| 2354 | * |
| 2355 | * PrivateKeyInfo ::= SEQUENCE { |
| 2356 | * version Version, |
| 2357 | * privateKeyAlgorithm PrivateKeyAlgorithmIdentifier, |
| 2358 | * privateKey PrivateKey, |
| 2359 | * attributes [0] IMPLICIT Attributes OPTIONAL } |
| 2360 | * |
| 2361 | * Version ::= INTEGER |
| 2362 | * PrivateKeyAlgorithmIdentifier ::= AlgorithmIdentifier |
| 2363 | * PrivateKey ::= OCTET STRING |
| 2364 | * |
| 2365 | * The PrivateKey OCTET STRING is a SEC1 ECPrivateKey |
| 2366 | */ |
| 2367 | |
| 2368 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 2369 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 2370 | { |
| 2371 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
Paul Bakker | e2f5040 | 2013-06-24 19:00:59 +0200 | [diff] [blame] | 2372 | } |
| 2373 | |
| 2374 | end = p + len; |
| 2375 | |
Manuel Pégourié-Gonnard | 6e88202 | 2013-07-11 14:55:43 +0200 | [diff] [blame] | 2376 | if( ( ret = asn1_get_int( &p, end, &version ) ) != 0 ) |
| 2377 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
| 2378 | |
| 2379 | if( version != 0 ) |
| 2380 | return( POLARSSL_ERR_X509_KEY_INVALID_VERSION + ret ); |
| 2381 | |
| 2382 | if( ( ret = x509_get_pk_alg( &p, end, &pk_alg, ¶ms ) ) != 0 ) |
| 2383 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
| 2384 | |
| 2385 | if( ( ret = asn1_get_tag( &p, end, &len, ASN1_OCTET_STRING ) ) != 0 ) |
| 2386 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
| 2387 | |
| 2388 | if( len < 1 ) |
| 2389 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + |
| 2390 | POLARSSL_ERR_ASN1_OUT_OF_DATA ); |
| 2391 | |
| 2392 | if( ( ret = pk_set_type( pk, pk_alg ) ) != 0 ) |
Paul Bakker | e2f5040 | 2013-06-24 19:00:59 +0200 | [diff] [blame] | 2393 | return( ret ); |
| 2394 | |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2395 | #if defined(POLARSSL_RSA_C) |
| 2396 | if( pk_alg == POLARSSL_PK_RSA ) |
| 2397 | { |
| 2398 | if( ( ret = x509parse_key_pkcs1_der( pk_rsa( *pk ), p, len ) ) != 0 ) |
| 2399 | { |
| 2400 | pk_free( pk ); |
| 2401 | return( ret ); |
| 2402 | } |
| 2403 | } else |
| 2404 | #endif /* POLARSSL_RSA_C */ |
| 2405 | #if defined(POLARSSL_ECP_C) |
Manuel Pégourié-Gonnard | 6e88202 | 2013-07-11 14:55:43 +0200 | [diff] [blame] | 2406 | if( pk_alg == POLARSSL_PK_ECKEY || pk_alg == POLARSSL_PK_ECKEY_DH ) |
| 2407 | { |
Manuel Pégourié-Gonnard | 6e88202 | 2013-07-11 14:55:43 +0200 | [diff] [blame] | 2408 | if( ( ret = x509_use_ecparams( ¶ms, &pk_ec( *pk )->grp ) ) != 0 || |
| 2409 | ( ret = x509parse_key_sec1_der( pk_ec( *pk ), p, len ) ) != 0 ) |
| 2410 | { |
| 2411 | pk_free( pk ); |
| 2412 | return( ret ); |
| 2413 | } |
| 2414 | } else |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2415 | #endif /* POLARSSL_ECP_C */ |
Manuel Pégourié-Gonnard | 6e88202 | 2013-07-11 14:55:43 +0200 | [diff] [blame] | 2416 | return( POLARSSL_ERR_X509_UNKNOWN_PK_ALG ); |
| 2417 | |
| 2418 | return 0; |
| 2419 | } |
| 2420 | |
| 2421 | /* |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2422 | * Parse an encrypted PKCS#8 encoded private key |
Paul Bakker | f1f21fe | 2013-06-24 19:17:19 +0200 | [diff] [blame] | 2423 | */ |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2424 | static int x509parse_key_pkcs8_encrypted_der( |
| 2425 | pk_context *pk, |
Manuel Pégourié-Gonnard | a5d9974 | 2013-07-04 11:08:31 +0200 | [diff] [blame] | 2426 | const unsigned char *key, size_t keylen, |
| 2427 | const unsigned char *pwd, size_t pwdlen ) |
Paul Bakker | f1f21fe | 2013-06-24 19:17:19 +0200 | [diff] [blame] | 2428 | { |
| 2429 | int ret; |
| 2430 | size_t len; |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2431 | unsigned char buf[2048]; |
Paul Bakker | f8d018a | 2013-06-29 12:16:17 +0200 | [diff] [blame] | 2432 | unsigned char *p, *end; |
Paul Bakker | f1f21fe | 2013-06-24 19:17:19 +0200 | [diff] [blame] | 2433 | x509_buf pbe_alg_oid, pbe_params; |
Paul Bakker | 7749a22 | 2013-06-28 17:28:20 +0200 | [diff] [blame] | 2434 | #if defined(POLARSSL_PKCS12_C) |
| 2435 | cipher_type_t cipher_alg; |
| 2436 | md_type_t md_alg; |
| 2437 | #endif |
Paul Bakker | f1f21fe | 2013-06-24 19:17:19 +0200 | [diff] [blame] | 2438 | |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2439 | memset( buf, 0, sizeof( buf ) ); |
Paul Bakker | f1f21fe | 2013-06-24 19:17:19 +0200 | [diff] [blame] | 2440 | |
| 2441 | p = (unsigned char *) key; |
| 2442 | end = p + keylen; |
| 2443 | |
Paul Bakker | 28144de | 2013-06-24 19:28:55 +0200 | [diff] [blame] | 2444 | if( pwdlen == 0 ) |
| 2445 | return( POLARSSL_ERR_X509_PASSWORD_REQUIRED ); |
| 2446 | |
Paul Bakker | f1f21fe | 2013-06-24 19:17:19 +0200 | [diff] [blame] | 2447 | /* |
| 2448 | * This function parses the EncryptedPrivatKeyInfo object (PKCS#8) |
| 2449 | * |
| 2450 | * EncryptedPrivateKeyInfo ::= SEQUENCE { |
| 2451 | * encryptionAlgorithm EncryptionAlgorithmIdentifier, |
| 2452 | * encryptedData EncryptedData |
| 2453 | * } |
| 2454 | * |
| 2455 | * EncryptionAlgorithmIdentifier ::= AlgorithmIdentifier |
| 2456 | * |
| 2457 | * EncryptedData ::= OCTET STRING |
| 2458 | * |
| 2459 | * The EncryptedData OCTET STRING is a PKCS#8 PrivateKeyInfo |
| 2460 | */ |
| 2461 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 2462 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 2463 | { |
| 2464 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
| 2465 | } |
| 2466 | |
| 2467 | end = p + len; |
| 2468 | |
Paul Bakker | f8d018a | 2013-06-29 12:16:17 +0200 | [diff] [blame] | 2469 | if( ( ret = asn1_get_alg( &p, end, &pbe_alg_oid, &pbe_params ) ) != 0 ) |
Paul Bakker | f1f21fe | 2013-06-24 19:17:19 +0200 | [diff] [blame] | 2470 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
Paul Bakker | f1f21fe | 2013-06-24 19:17:19 +0200 | [diff] [blame] | 2471 | |
| 2472 | if( ( ret = asn1_get_tag( &p, end, &len, ASN1_OCTET_STRING ) ) != 0 ) |
| 2473 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
| 2474 | |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2475 | if( len > sizeof( buf ) ) |
Paul Bakker | f1f21fe | 2013-06-24 19:17:19 +0200 | [diff] [blame] | 2476 | return( POLARSSL_ERR_X509_INVALID_INPUT ); |
| 2477 | |
| 2478 | /* |
| 2479 | * Decrypt EncryptedData with appropriate PDE |
| 2480 | */ |
Paul Bakker | 38b50d7 | 2013-06-24 19:33:27 +0200 | [diff] [blame] | 2481 | #if defined(POLARSSL_PKCS12_C) |
Paul Bakker | 7749a22 | 2013-06-28 17:28:20 +0200 | [diff] [blame] | 2482 | if( oid_get_pkcs12_pbe_alg( &pbe_alg_oid, &md_alg, &cipher_alg ) == 0 ) |
Paul Bakker | f1f21fe | 2013-06-24 19:17:19 +0200 | [diff] [blame] | 2483 | { |
Paul Bakker | 38b50d7 | 2013-06-24 19:33:27 +0200 | [diff] [blame] | 2484 | if( ( ret = pkcs12_pbe( &pbe_params, PKCS12_PBE_DECRYPT, |
Paul Bakker | 7749a22 | 2013-06-28 17:28:20 +0200 | [diff] [blame] | 2485 | cipher_alg, md_alg, |
Paul Bakker | 38b50d7 | 2013-06-24 19:33:27 +0200 | [diff] [blame] | 2486 | pwd, pwdlen, p, len, buf ) ) != 0 ) |
Paul Bakker | f1f21fe | 2013-06-24 19:17:19 +0200 | [diff] [blame] | 2487 | { |
Paul Bakker | 38b50d7 | 2013-06-24 19:33:27 +0200 | [diff] [blame] | 2488 | if( ret == POLARSSL_ERR_PKCS12_PASSWORD_MISMATCH ) |
| 2489 | return( POLARSSL_ERR_X509_PASSWORD_MISMATCH ); |
| 2490 | |
Paul Bakker | f1f21fe | 2013-06-24 19:17:19 +0200 | [diff] [blame] | 2491 | return( ret ); |
| 2492 | } |
| 2493 | } |
| 2494 | else if( OID_CMP( OID_PKCS12_PBE_SHA1_RC4_128, &pbe_alg_oid ) ) |
| 2495 | { |
| 2496 | if( ( ret = pkcs12_pbe_sha1_rc4_128( &pbe_params, |
| 2497 | PKCS12_PBE_DECRYPT, |
| 2498 | pwd, pwdlen, |
| 2499 | p, len, buf ) ) != 0 ) |
| 2500 | { |
| 2501 | return( ret ); |
| 2502 | } |
Paul Bakker | 38b50d7 | 2013-06-24 19:33:27 +0200 | [diff] [blame] | 2503 | |
| 2504 | // Best guess for password mismatch when using RC4. If first tag is |
| 2505 | // not ASN1_CONSTRUCTED | ASN1_SEQUENCE |
| 2506 | // |
| 2507 | if( *buf != ( ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) |
| 2508 | return( POLARSSL_ERR_X509_PASSWORD_MISMATCH ); |
Paul Bakker | f1f21fe | 2013-06-24 19:17:19 +0200 | [diff] [blame] | 2509 | } |
Paul Bakker | 38b50d7 | 2013-06-24 19:33:27 +0200 | [diff] [blame] | 2510 | else |
| 2511 | #endif /* POLARSSL_PKCS12_C */ |
Paul Bakker | 28144de | 2013-06-24 19:28:55 +0200 | [diff] [blame] | 2512 | #if defined(POLARSSL_PKCS5_C) |
Paul Bakker | 38b50d7 | 2013-06-24 19:33:27 +0200 | [diff] [blame] | 2513 | if( OID_CMP( OID_PKCS5_PBES2, &pbe_alg_oid ) ) |
Paul Bakker | 28144de | 2013-06-24 19:28:55 +0200 | [diff] [blame] | 2514 | { |
| 2515 | if( ( ret = pkcs5_pbes2( &pbe_params, PKCS5_DECRYPT, pwd, pwdlen, |
| 2516 | p, len, buf ) ) != 0 ) |
| 2517 | { |
| 2518 | if( ret == POLARSSL_ERR_PKCS5_PASSWORD_MISMATCH ) |
| 2519 | return( POLARSSL_ERR_X509_PASSWORD_MISMATCH ); |
| 2520 | |
| 2521 | return( ret ); |
| 2522 | } |
| 2523 | } |
Paul Bakker | f1f21fe | 2013-06-24 19:17:19 +0200 | [diff] [blame] | 2524 | else |
Paul Bakker | 38b50d7 | 2013-06-24 19:33:27 +0200 | [diff] [blame] | 2525 | #endif /* POLARSSL_PKCS5_C */ |
Paul Bakker | f1f21fe | 2013-06-24 19:17:19 +0200 | [diff] [blame] | 2526 | return( POLARSSL_ERR_X509_FEATURE_UNAVAILABLE ); |
| 2527 | |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2528 | return( x509parse_key_pkcs8_unencrypted_der( pk, buf, len ) ); |
Manuel Pégourié-Gonnard | 416fa8f | 2013-07-04 10:46:23 +0200 | [diff] [blame] | 2529 | } |
| 2530 | |
| 2531 | /* |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2532 | * Parse a private key |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2533 | */ |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2534 | int x509parse_key( pk_context *pk, |
| 2535 | const unsigned char *key, size_t keylen, |
| 2536 | const unsigned char *pwd, size_t pwdlen ) |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2537 | { |
| 2538 | int ret; |
| 2539 | |
| 2540 | #if defined(POLARSSL_PEM_C) |
| 2541 | size_t len; |
| 2542 | pem_context pem; |
| 2543 | |
| 2544 | pem_init( &pem ); |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2545 | |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2546 | #if defined(POLARSSL_RSA_C) |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2547 | ret = pem_read_buffer( &pem, |
| 2548 | "-----BEGIN RSA PRIVATE KEY-----", |
| 2549 | "-----END RSA PRIVATE KEY-----", |
| 2550 | key, pwd, pwdlen, &len ); |
| 2551 | if( ret == 0 ) |
| 2552 | { |
| 2553 | if( ( ret = pk_set_type( pk, POLARSSL_PK_RSA ) ) != 0 || |
| 2554 | ( ret = x509parse_key_pkcs1_der( pk_rsa( *pk ), |
| 2555 | pem.buf, pem.buflen ) ) != 0 ) |
| 2556 | { |
| 2557 | pk_free( pk ); |
| 2558 | } |
| 2559 | |
| 2560 | pem_free( &pem ); |
| 2561 | return( ret ); |
| 2562 | } |
| 2563 | else if( ret == POLARSSL_ERR_PEM_PASSWORD_MISMATCH ) |
| 2564 | return( POLARSSL_ERR_X509_PASSWORD_MISMATCH ); |
| 2565 | else if( ret == POLARSSL_ERR_PEM_PASSWORD_REQUIRED ) |
| 2566 | return( POLARSSL_ERR_X509_PASSWORD_REQUIRED ); |
| 2567 | else if( ret != POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT ) |
| 2568 | return( ret ); |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2569 | #endif /* POLARSSL_RSA_C */ |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2570 | |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2571 | #if defined(POLARSSL_ECP_C) |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2572 | ret = pem_read_buffer( &pem, |
| 2573 | "-----BEGIN EC PRIVATE KEY-----", |
| 2574 | "-----END EC PRIVATE KEY-----", |
| 2575 | key, pwd, pwdlen, &len ); |
| 2576 | if( ret == 0 ) |
| 2577 | { |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2578 | if( ( ret = pk_set_type( pk, POLARSSL_PK_ECKEY ) ) != 0 || |
| 2579 | ( ret = x509parse_key_sec1_der( pk_ec( *pk ), |
| 2580 | pem.buf, pem.buflen ) ) != 0 ) |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2581 | { |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2582 | pk_free( pk ); |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2583 | } |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2584 | |
| 2585 | pem_free( &pem ); |
| 2586 | return( ret ); |
| 2587 | } |
| 2588 | else if( ret == POLARSSL_ERR_PEM_PASSWORD_MISMATCH ) |
| 2589 | return( POLARSSL_ERR_X509_PASSWORD_MISMATCH ); |
| 2590 | else if( ret == POLARSSL_ERR_PEM_PASSWORD_REQUIRED ) |
| 2591 | return( POLARSSL_ERR_X509_PASSWORD_REQUIRED ); |
| 2592 | else if( ret != POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT ) |
| 2593 | return( ret ); |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2594 | #endif /* POLARSSL_ECP_C */ |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2595 | |
Manuel Pégourié-Gonnard | 15e8b82 | 2013-07-03 11:56:37 +0200 | [diff] [blame] | 2596 | ret = pem_read_buffer( &pem, |
| 2597 | "-----BEGIN PRIVATE KEY-----", |
| 2598 | "-----END PRIVATE KEY-----", |
| 2599 | key, NULL, 0, &len ); |
| 2600 | if( ret == 0 ) |
| 2601 | { |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2602 | if( ( ret = x509parse_key_pkcs8_unencrypted_der( pk, |
Manuel Pégourié-Gonnard | 15e8b82 | 2013-07-03 11:56:37 +0200 | [diff] [blame] | 2603 | pem.buf, pem.buflen ) ) != 0 ) |
| 2604 | { |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2605 | pk_free( pk ); |
Manuel Pégourié-Gonnard | 15e8b82 | 2013-07-03 11:56:37 +0200 | [diff] [blame] | 2606 | } |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2607 | |
Manuel Pégourié-Gonnard | 15e8b82 | 2013-07-03 11:56:37 +0200 | [diff] [blame] | 2608 | pem_free( &pem ); |
| 2609 | return( ret ); |
| 2610 | } |
| 2611 | else if( ret != POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT ) |
| 2612 | return( ret ); |
| 2613 | |
| 2614 | ret = pem_read_buffer( &pem, |
| 2615 | "-----BEGIN ENCRYPTED PRIVATE KEY-----", |
| 2616 | "-----END ENCRYPTED PRIVATE KEY-----", |
| 2617 | key, NULL, 0, &len ); |
| 2618 | if( ret == 0 ) |
| 2619 | { |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2620 | if( ( ret = x509parse_key_pkcs8_encrypted_der( pk, |
Manuel Pégourié-Gonnard | 15e8b82 | 2013-07-03 11:56:37 +0200 | [diff] [blame] | 2621 | pem.buf, pem.buflen, |
| 2622 | pwd, pwdlen ) ) != 0 ) |
| 2623 | { |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2624 | pk_free( pk ); |
Manuel Pégourié-Gonnard | 15e8b82 | 2013-07-03 11:56:37 +0200 | [diff] [blame] | 2625 | } |
| 2626 | |
| 2627 | pem_free( &pem ); |
| 2628 | return( ret ); |
| 2629 | } |
| 2630 | else if( ret != POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT ) |
| 2631 | return( ret ); |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2632 | #else |
| 2633 | ((void) pwd); |
| 2634 | ((void) pwdlen); |
| 2635 | #endif /* POLARSSL_PEM_C */ |
| 2636 | |
Manuel Pégourié-Gonnard | 15e8b82 | 2013-07-03 11:56:37 +0200 | [diff] [blame] | 2637 | /* |
| 2638 | * At this point we only know it's not a PEM formatted key. Could be any |
| 2639 | * of the known DER encoded private key formats |
| 2640 | * |
| 2641 | * We try the different DER format parsers to see if one passes without |
| 2642 | * error |
| 2643 | */ |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2644 | if( ( ret = x509parse_key_pkcs8_encrypted_der( pk, key, keylen, |
| 2645 | pwd, pwdlen ) ) == 0 ) |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2646 | { |
| 2647 | return( 0 ); |
| 2648 | } |
| 2649 | |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2650 | pk_free( pk ); |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2651 | |
| 2652 | if( ret == POLARSSL_ERR_X509_PASSWORD_MISMATCH ) |
| 2653 | { |
| 2654 | return( ret ); |
| 2655 | } |
| 2656 | |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2657 | if( ( ret = x509parse_key_pkcs8_unencrypted_der( pk, key, keylen ) ) == 0 ) |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2658 | return( 0 ); |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2659 | |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2660 | pk_free( pk ); |
Manuel Pégourié-Gonnard | 15e8b82 | 2013-07-03 11:56:37 +0200 | [diff] [blame] | 2661 | |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2662 | #if defined(POLARSSL_RSA_C) |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2663 | if( ( ret = pk_set_type( pk, POLARSSL_PK_RSA ) ) == 0 && |
| 2664 | ( ret = x509parse_key_pkcs1_der( pk_rsa( *pk ), key, keylen ) ) == 0 ) |
| 2665 | { |
Manuel Pégourié-Gonnard | 15e8b82 | 2013-07-03 11:56:37 +0200 | [diff] [blame] | 2666 | return( 0 ); |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2667 | } |
Manuel Pégourié-Gonnard | 15e8b82 | 2013-07-03 11:56:37 +0200 | [diff] [blame] | 2668 | |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2669 | pk_free( pk ); |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2670 | #endif /* POLARSSL_RSA_C */ |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2671 | |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2672 | #if defined(POLARSSL_ECP_C) |
Manuel Pégourié-Gonnard | 8b863cd | 2013-07-11 15:32:03 +0200 | [diff] [blame] | 2673 | if( ( ret = pk_set_type( pk, POLARSSL_PK_ECKEY ) ) == 0 && |
| 2674 | ( ret = x509parse_key_sec1_der( pk_ec( *pk ), key, keylen ) ) == 0 ) |
| 2675 | { |
| 2676 | return( 0 ); |
| 2677 | } |
| 2678 | |
| 2679 | pk_free( pk ); |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2680 | #endif /* POLARSSL_ECP_C */ |
Manuel Pégourié-Gonnard | 26833c2 | 2013-06-27 11:27:58 +0200 | [diff] [blame] | 2681 | |
| 2682 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT ); |
| 2683 | } |
Manuel Pégourié-Gonnard | 8838099 | 2013-07-04 14:09:57 +0200 | [diff] [blame] | 2684 | |
| 2685 | /* |
| 2686 | * Parse a public key |
| 2687 | */ |
| 2688 | int x509parse_public_key( pk_context *ctx, |
| 2689 | const unsigned char *key, size_t keylen ) |
| 2690 | { |
| 2691 | int ret; |
Manuel Pégourié-Gonnard | 4fa0476 | 2013-07-09 13:10:49 +0200 | [diff] [blame] | 2692 | unsigned char *p; |
| 2693 | #if defined(POLARSSL_PEM_C) |
| 2694 | size_t len; |
| 2695 | pem_context pem; |
Manuel Pégourié-Gonnard | 8838099 | 2013-07-04 14:09:57 +0200 | [diff] [blame] | 2696 | |
Manuel Pégourié-Gonnard | 4fa0476 | 2013-07-09 13:10:49 +0200 | [diff] [blame] | 2697 | pem_init( &pem ); |
| 2698 | ret = pem_read_buffer( &pem, |
| 2699 | "-----BEGIN PUBLIC KEY-----", |
| 2700 | "-----END PUBLIC KEY-----", |
| 2701 | key, NULL, 0, &len ); |
| 2702 | |
| 2703 | if( ret == 0 ) |
| 2704 | { |
| 2705 | /* |
| 2706 | * Was PEM encoded |
| 2707 | */ |
| 2708 | key = pem.buf; |
| 2709 | keylen = pem.buflen; |
| 2710 | } |
| 2711 | else if( ret != POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT ) |
| 2712 | { |
| 2713 | pem_free( &pem ); |
Manuel Pégourié-Gonnard | 8838099 | 2013-07-04 14:09:57 +0200 | [diff] [blame] | 2714 | return( ret ); |
Manuel Pégourié-Gonnard | 4fa0476 | 2013-07-09 13:10:49 +0200 | [diff] [blame] | 2715 | } |
| 2716 | #endif |
| 2717 | p = (unsigned char *) key; |
Manuel Pégourié-Gonnard | 8838099 | 2013-07-04 14:09:57 +0200 | [diff] [blame] | 2718 | |
Manuel Pégourié-Gonnard | 4fa0476 | 2013-07-09 13:10:49 +0200 | [diff] [blame] | 2719 | ret = x509_get_pubkey( &p, p + keylen, ctx ); |
Manuel Pégourié-Gonnard | 8838099 | 2013-07-04 14:09:57 +0200 | [diff] [blame] | 2720 | |
Manuel Pégourié-Gonnard | 4fa0476 | 2013-07-09 13:10:49 +0200 | [diff] [blame] | 2721 | #if defined(POLARSSL_PEM_C) |
| 2722 | pem_free( &pem ); |
| 2723 | #endif |
Manuel Pégourié-Gonnard | 374e4b8 | 2013-07-09 10:21:34 +0200 | [diff] [blame] | 2724 | |
Manuel Pégourié-Gonnard | 4fa0476 | 2013-07-09 13:10:49 +0200 | [diff] [blame] | 2725 | return( ret ); |
Manuel Pégourié-Gonnard | 8838099 | 2013-07-04 14:09:57 +0200 | [diff] [blame] | 2726 | } |
| 2727 | |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 2728 | #if defined(POLARSSL_RSA_C) |
| 2729 | /* |
| 2730 | * Parse a private RSA key |
| 2731 | */ |
| 2732 | int x509parse_key_rsa( rsa_context *rsa, |
| 2733 | const unsigned char *key, size_t keylen, |
| 2734 | const unsigned char *pwd, size_t pwdlen ) |
| 2735 | { |
| 2736 | pk_context pk; |
| 2737 | |
| 2738 | pk_init( &pk ); |
| 2739 | pk_wrap_rsa( &pk, rsa ); |
| 2740 | |
| 2741 | return( x509parse_key( &pk, key, keylen, pwd, pwdlen ) ); |
| 2742 | } |
| 2743 | |
| 2744 | /* |
| 2745 | * Parse a public RSA key |
| 2746 | */ |
| 2747 | int x509parse_public_key_rsa( rsa_context *rsa, |
| 2748 | const unsigned char *key, size_t keylen ) |
| 2749 | { |
| 2750 | pk_context pk; |
| 2751 | |
| 2752 | pk_init( &pk ); |
| 2753 | pk_wrap_rsa( &pk, rsa ); |
| 2754 | |
| 2755 | return( x509parse_public_key( &pk, key, keylen ) ); |
| 2756 | } |
| 2757 | #endif /* POLARSSL_RSA_C */ |
| 2758 | |
Paul Bakker | eaa89f8 | 2011-04-04 21:36:15 +0000 | [diff] [blame] | 2759 | #if defined(POLARSSL_DHM_C) |
Paul Bakker | 53019ae | 2011-03-25 13:58:48 +0000 | [diff] [blame] | 2760 | /* |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2761 | * Parse DHM parameters |
| 2762 | */ |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 2763 | int x509parse_dhm( dhm_context *dhm, const unsigned char *dhmin, size_t dhminlen ) |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2764 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 2765 | int ret; |
| 2766 | size_t len; |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2767 | unsigned char *p, *end; |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 2768 | #if defined(POLARSSL_PEM_C) |
| 2769 | pem_context pem; |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2770 | |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 2771 | pem_init( &pem ); |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2772 | |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 2773 | ret = pem_read_buffer( &pem, |
| 2774 | "-----BEGIN DH PARAMETERS-----", |
| 2775 | "-----END DH PARAMETERS-----", |
| 2776 | dhmin, NULL, 0, &dhminlen ); |
| 2777 | |
| 2778 | if( ret == 0 ) |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2779 | { |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 2780 | /* |
| 2781 | * Was PEM encoded |
| 2782 | */ |
| 2783 | dhminlen = pem.buflen; |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2784 | } |
Paul Bakker | 00b2860 | 2013-06-24 13:02:41 +0200 | [diff] [blame] | 2785 | else if( ret != POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT ) |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2786 | { |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 2787 | pem_free( &pem ); |
| 2788 | return( ret ); |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2789 | } |
| 2790 | |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 2791 | p = ( ret == 0 ) ? pem.buf : (unsigned char *) dhmin; |
| 2792 | #else |
| 2793 | p = (unsigned char *) dhmin; |
| 2794 | #endif |
| 2795 | end = p + dhminlen; |
| 2796 | |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2797 | memset( dhm, 0, sizeof( dhm_context ) ); |
| 2798 | |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2799 | /* |
| 2800 | * DHParams ::= SEQUENCE { |
| 2801 | * prime INTEGER, -- P |
| 2802 | * generator INTEGER, -- g |
| 2803 | * } |
| 2804 | */ |
| 2805 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 2806 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 2807 | { |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 2808 | #if defined(POLARSSL_PEM_C) |
| 2809 | pem_free( &pem ); |
| 2810 | #endif |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 2811 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2812 | } |
| 2813 | |
| 2814 | end = p + len; |
| 2815 | |
| 2816 | if( ( ret = asn1_get_mpi( &p, end, &dhm->P ) ) != 0 || |
| 2817 | ( ret = asn1_get_mpi( &p, end, &dhm->G ) ) != 0 ) |
| 2818 | { |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 2819 | #if defined(POLARSSL_PEM_C) |
| 2820 | pem_free( &pem ); |
| 2821 | #endif |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2822 | dhm_free( dhm ); |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 2823 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + ret ); |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2824 | } |
| 2825 | |
| 2826 | if( p != end ) |
| 2827 | { |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 2828 | #if defined(POLARSSL_PEM_C) |
| 2829 | pem_free( &pem ); |
| 2830 | #endif |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2831 | dhm_free( dhm ); |
Paul Bakker | 9d78140 | 2011-05-09 16:17:09 +0000 | [diff] [blame] | 2832 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT + |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2833 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
| 2834 | } |
| 2835 | |
Paul Bakker | 96743fc | 2011-02-12 14:30:57 +0000 | [diff] [blame] | 2836 | #if defined(POLARSSL_PEM_C) |
| 2837 | pem_free( &pem ); |
| 2838 | #endif |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2839 | |
| 2840 | return( 0 ); |
| 2841 | } |
| 2842 | |
Paul Bakker | 335db3f | 2011-04-25 15:28:35 +0000 | [diff] [blame] | 2843 | #if defined(POLARSSL_FS_IO) |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2844 | /* |
Manuel Pégourié-Gonnard | 4250a1f | 2013-06-27 13:00:00 +0200 | [diff] [blame] | 2845 | * Load and parse DHM parameters |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2846 | */ |
| 2847 | int x509parse_dhmfile( dhm_context *dhm, const char *path ) |
| 2848 | { |
| 2849 | int ret; |
| 2850 | size_t n; |
| 2851 | unsigned char *buf; |
| 2852 | |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 2853 | if ( ( ret = load_file( path, &buf, &n ) ) != 0 ) |
| 2854 | return( ret ); |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2855 | |
Paul Bakker | 27fdf46 | 2011-06-09 13:55:13 +0000 | [diff] [blame] | 2856 | ret = x509parse_dhm( dhm, buf, n ); |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2857 | |
| 2858 | memset( buf, 0, n + 1 ); |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 2859 | polarssl_free( buf ); |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2860 | |
| 2861 | return( ret ); |
| 2862 | } |
Paul Bakker | 335db3f | 2011-04-25 15:28:35 +0000 | [diff] [blame] | 2863 | #endif /* POLARSSL_FS_IO */ |
Paul Bakker | eaa89f8 | 2011-04-04 21:36:15 +0000 | [diff] [blame] | 2864 | #endif /* POLARSSL_DHM_C */ |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 2865 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2866 | #if defined _MSC_VER && !defined snprintf |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 2867 | #include <stdarg.h> |
| 2868 | |
| 2869 | #if !defined vsnprintf |
| 2870 | #define vsnprintf _vsnprintf |
| 2871 | #endif // vsnprintf |
| 2872 | |
| 2873 | /* |
| 2874 | * Windows _snprintf and _vsnprintf are not compatible to linux versions. |
| 2875 | * Result value is not size of buffer needed, but -1 if no fit is possible. |
| 2876 | * |
| 2877 | * This fuction tries to 'fix' this by at least suggesting enlarging the |
| 2878 | * size by 20. |
| 2879 | */ |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 2880 | static int compat_snprintf(char *str, size_t size, const char *format, ...) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 2881 | { |
| 2882 | va_list ap; |
| 2883 | int res = -1; |
| 2884 | |
| 2885 | va_start( ap, format ); |
| 2886 | |
| 2887 | res = vsnprintf( str, size, format, ap ); |
| 2888 | |
| 2889 | va_end( ap ); |
| 2890 | |
| 2891 | // No quick fix possible |
| 2892 | if ( res < 0 ) |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 2893 | return( (int) size + 20 ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 2894 | |
| 2895 | return res; |
| 2896 | } |
| 2897 | |
| 2898 | #define snprintf compat_snprintf |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2899 | #endif |
| 2900 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 2901 | #define POLARSSL_ERR_DEBUG_BUF_TOO_SMALL -2 |
| 2902 | |
| 2903 | #define SAFE_SNPRINTF() \ |
| 2904 | { \ |
| 2905 | if( ret == -1 ) \ |
| 2906 | return( -1 ); \ |
| 2907 | \ |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 2908 | if ( (unsigned int) ret > n ) { \ |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 2909 | p[n - 1] = '\0'; \ |
| 2910 | return POLARSSL_ERR_DEBUG_BUF_TOO_SMALL;\ |
| 2911 | } \ |
| 2912 | \ |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 2913 | n -= (unsigned int) ret; \ |
| 2914 | p += (unsigned int) ret; \ |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 2915 | } |
| 2916 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2917 | /* |
| 2918 | * Store the name in printable form into buf; no more |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 2919 | * than size characters will be written |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2920 | */ |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 2921 | int x509parse_dn_gets( char *buf, size_t size, const x509_name *dn ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2922 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 2923 | int ret; |
| 2924 | size_t i, n; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2925 | unsigned char c; |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 2926 | const x509_name *name; |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 2927 | const char *short_name = NULL; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2928 | char s[128], *p; |
| 2929 | |
| 2930 | memset( s, 0, sizeof( s ) ); |
| 2931 | |
| 2932 | name = dn; |
| 2933 | p = buf; |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 2934 | n = size; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2935 | |
| 2936 | while( name != NULL ) |
| 2937 | { |
Paul Bakker | cefb396 | 2012-06-27 11:51:09 +0000 | [diff] [blame] | 2938 | if( !name->oid.p ) |
| 2939 | { |
| 2940 | name = name->next; |
| 2941 | continue; |
| 2942 | } |
| 2943 | |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 2944 | if( name != dn ) |
| 2945 | { |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 2946 | ret = snprintf( p, n, ", " ); |
| 2947 | SAFE_SNPRINTF(); |
| 2948 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2949 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 2950 | ret = oid_get_attr_short_name( &name->oid, &short_name ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2951 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 2952 | if( ret == 0 ) |
| 2953 | ret = snprintf( p, n, "%s=", short_name ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2954 | else |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 2955 | ret = snprintf( p, n, "\?\?=" ); |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 2956 | SAFE_SNPRINTF(); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2957 | |
| 2958 | for( i = 0; i < name->val.len; i++ ) |
| 2959 | { |
Paul Bakker | 27fdf46 | 2011-06-09 13:55:13 +0000 | [diff] [blame] | 2960 | if( i >= sizeof( s ) - 1 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2961 | break; |
| 2962 | |
| 2963 | c = name->val.p[i]; |
| 2964 | if( c < 32 || c == 127 || ( c > 128 && c < 160 ) ) |
| 2965 | s[i] = '?'; |
| 2966 | else s[i] = c; |
| 2967 | } |
| 2968 | s[i] = '\0'; |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 2969 | ret = snprintf( p, n, "%s", s ); |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 2970 | SAFE_SNPRINTF(); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2971 | name = name->next; |
| 2972 | } |
| 2973 | |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 2974 | return( (int) ( size - n ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 2975 | } |
| 2976 | |
| 2977 | /* |
Paul Bakker | dd47699 | 2011-01-16 21:34:59 +0000 | [diff] [blame] | 2978 | * Store the serial in printable form into buf; no more |
| 2979 | * than size characters will be written |
| 2980 | */ |
| 2981 | int x509parse_serial_gets( char *buf, size_t size, const x509_buf *serial ) |
| 2982 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 2983 | int ret; |
| 2984 | size_t i, n, nr; |
Paul Bakker | dd47699 | 2011-01-16 21:34:59 +0000 | [diff] [blame] | 2985 | char *p; |
| 2986 | |
| 2987 | p = buf; |
| 2988 | n = size; |
| 2989 | |
| 2990 | nr = ( serial->len <= 32 ) |
Paul Bakker | 03c7c25 | 2011-11-25 12:37:37 +0000 | [diff] [blame] | 2991 | ? serial->len : 28; |
Paul Bakker | dd47699 | 2011-01-16 21:34:59 +0000 | [diff] [blame] | 2992 | |
| 2993 | for( i = 0; i < nr; i++ ) |
| 2994 | { |
Paul Bakker | 9304880 | 2011-12-05 14:38:06 +0000 | [diff] [blame] | 2995 | if( i == 0 && nr > 1 && serial->p[i] == 0x0 ) |
Paul Bakker | c8ffbe7 | 2011-12-05 14:22:49 +0000 | [diff] [blame] | 2996 | continue; |
| 2997 | |
Paul Bakker | dd47699 | 2011-01-16 21:34:59 +0000 | [diff] [blame] | 2998 | ret = snprintf( p, n, "%02X%s", |
| 2999 | serial->p[i], ( i < nr - 1 ) ? ":" : "" ); |
| 3000 | SAFE_SNPRINTF(); |
| 3001 | } |
| 3002 | |
Paul Bakker | 03c7c25 | 2011-11-25 12:37:37 +0000 | [diff] [blame] | 3003 | if( nr != serial->len ) |
| 3004 | { |
| 3005 | ret = snprintf( p, n, "...." ); |
| 3006 | SAFE_SNPRINTF(); |
| 3007 | } |
| 3008 | |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 3009 | return( (int) ( size - n ) ); |
Paul Bakker | dd47699 | 2011-01-16 21:34:59 +0000 | [diff] [blame] | 3010 | } |
| 3011 | |
| 3012 | /* |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3013 | * Return an informational string about the certificate. |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3014 | */ |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 3015 | int x509parse_cert_info( char *buf, size_t size, const char *prefix, |
| 3016 | const x509_cert *crt ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3017 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 3018 | int ret; |
| 3019 | size_t n; |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3020 | char *p; |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3021 | const char *desc = NULL; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3022 | |
| 3023 | p = buf; |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3024 | n = size; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3025 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3026 | ret = snprintf( p, n, "%scert. version : %d\n", |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3027 | prefix, crt->version ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3028 | SAFE_SNPRINTF(); |
| 3029 | ret = snprintf( p, n, "%sserial number : ", |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3030 | prefix ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3031 | SAFE_SNPRINTF(); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3032 | |
Paul Bakker | dd47699 | 2011-01-16 21:34:59 +0000 | [diff] [blame] | 3033 | ret = x509parse_serial_gets( p, n, &crt->serial); |
| 3034 | SAFE_SNPRINTF(); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3035 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3036 | ret = snprintf( p, n, "\n%sissuer name : ", prefix ); |
| 3037 | SAFE_SNPRINTF(); |
| 3038 | ret = x509parse_dn_gets( p, n, &crt->issuer ); |
| 3039 | SAFE_SNPRINTF(); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3040 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3041 | ret = snprintf( p, n, "\n%ssubject name : ", prefix ); |
| 3042 | SAFE_SNPRINTF(); |
| 3043 | ret = x509parse_dn_gets( p, n, &crt->subject ); |
| 3044 | SAFE_SNPRINTF(); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3045 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3046 | ret = snprintf( p, n, "\n%sissued on : " \ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3047 | "%04d-%02d-%02d %02d:%02d:%02d", prefix, |
| 3048 | crt->valid_from.year, crt->valid_from.mon, |
| 3049 | crt->valid_from.day, crt->valid_from.hour, |
| 3050 | crt->valid_from.min, crt->valid_from.sec ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3051 | SAFE_SNPRINTF(); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3052 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3053 | ret = snprintf( p, n, "\n%sexpires on : " \ |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3054 | "%04d-%02d-%02d %02d:%02d:%02d", prefix, |
| 3055 | crt->valid_to.year, crt->valid_to.mon, |
| 3056 | crt->valid_to.day, crt->valid_to.hour, |
| 3057 | crt->valid_to.min, crt->valid_to.sec ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3058 | SAFE_SNPRINTF(); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3059 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3060 | ret = snprintf( p, n, "\n%ssigned using : ", prefix ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3061 | SAFE_SNPRINTF(); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3062 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3063 | ret = oid_get_sig_alg_desc( &crt->sig_oid1, &desc ); |
| 3064 | if( ret != 0 ) |
| 3065 | ret = snprintf( p, n, "???" ); |
| 3066 | else |
| 3067 | ret = snprintf( p, n, desc ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3068 | SAFE_SNPRINTF(); |
| 3069 | |
Manuel Pégourié-Gonnard | ab2d983 | 2013-07-11 16:17:23 +0200 | [diff] [blame] | 3070 | #if defined(POLARSSL_RSA_C) |
| 3071 | if( crt->pk.type == POLARSSL_PK_RSA ) |
| 3072 | ret = snprintf( p, n, "\n%sRSA key size : %d bits\n", prefix, |
| 3073 | (int) pk_rsa( crt->pk )->N.n * (int) sizeof( t_uint ) * 8 ); |
| 3074 | else |
| 3075 | #endif /* POLARSSL_RSA_C */ |
| 3076 | #if defined(POLARSSL_ECP_C) |
| 3077 | if( crt->pk.type == POLARSSL_PK_ECKEY || |
| 3078 | crt->pk.type == POLARSSL_PK_ECKEY_DH ) |
| 3079 | ret = snprintf( p, n, "\n%sEC key size : %d bits\n", prefix, |
| 3080 | (int) pk_ec( crt->pk )->grp.pbits ); |
| 3081 | else |
| 3082 | #endif /* POLARSSL_ECP_C */ |
| 3083 | ret = snprintf(p, n, "\n%sPK type looks wrong!", prefix); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3084 | SAFE_SNPRINTF(); |
| 3085 | |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 3086 | return( (int) ( size - n ) ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3087 | } |
| 3088 | |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 3089 | /* |
| 3090 | * Return an informational string describing the given OID |
| 3091 | */ |
| 3092 | const char *x509_oid_get_description( x509_buf *oid ) |
| 3093 | { |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3094 | const char *desc = NULL; |
| 3095 | int ret; |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 3096 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3097 | ret = oid_get_extended_key_usage( oid, &desc ); |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 3098 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3099 | if( ret != 0 ) |
| 3100 | return( NULL ); |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 3101 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3102 | return( desc ); |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 3103 | } |
| 3104 | |
| 3105 | /* Return the x.y.z.... style numeric string for the given OID */ |
| 3106 | int x509_oid_get_numeric_string( char *buf, size_t size, x509_buf *oid ) |
| 3107 | { |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3108 | return oid_get_numeric_string( buf, size, oid ); |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 3109 | } |
| 3110 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3111 | /* |
| 3112 | * Return an informational string about the CRL. |
| 3113 | */ |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 3114 | int x509parse_crl_info( char *buf, size_t size, const char *prefix, |
| 3115 | const x509_crl *crl ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3116 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 3117 | int ret; |
Paul Bakker | c8ffbe7 | 2011-12-05 14:22:49 +0000 | [diff] [blame] | 3118 | size_t n; |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3119 | char *p; |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3120 | const char *desc; |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 3121 | const x509_crl_entry *entry; |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3122 | |
| 3123 | p = buf; |
| 3124 | n = size; |
| 3125 | |
| 3126 | ret = snprintf( p, n, "%sCRL version : %d", |
| 3127 | prefix, crl->version ); |
| 3128 | SAFE_SNPRINTF(); |
| 3129 | |
| 3130 | ret = snprintf( p, n, "\n%sissuer name : ", prefix ); |
| 3131 | SAFE_SNPRINTF(); |
| 3132 | ret = x509parse_dn_gets( p, n, &crl->issuer ); |
| 3133 | SAFE_SNPRINTF(); |
| 3134 | |
| 3135 | ret = snprintf( p, n, "\n%sthis update : " \ |
| 3136 | "%04d-%02d-%02d %02d:%02d:%02d", prefix, |
| 3137 | crl->this_update.year, crl->this_update.mon, |
| 3138 | crl->this_update.day, crl->this_update.hour, |
| 3139 | crl->this_update.min, crl->this_update.sec ); |
| 3140 | SAFE_SNPRINTF(); |
| 3141 | |
| 3142 | ret = snprintf( p, n, "\n%snext update : " \ |
| 3143 | "%04d-%02d-%02d %02d:%02d:%02d", prefix, |
| 3144 | crl->next_update.year, crl->next_update.mon, |
| 3145 | crl->next_update.day, crl->next_update.hour, |
| 3146 | crl->next_update.min, crl->next_update.sec ); |
| 3147 | SAFE_SNPRINTF(); |
| 3148 | |
| 3149 | entry = &crl->entry; |
| 3150 | |
| 3151 | ret = snprintf( p, n, "\n%sRevoked certificates:", |
| 3152 | prefix ); |
| 3153 | SAFE_SNPRINTF(); |
| 3154 | |
Paul Bakker | 9be1937 | 2009-07-27 20:21:53 +0000 | [diff] [blame] | 3155 | while( entry != NULL && entry->raw.len != 0 ) |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3156 | { |
| 3157 | ret = snprintf( p, n, "\n%sserial number: ", |
| 3158 | prefix ); |
| 3159 | SAFE_SNPRINTF(); |
| 3160 | |
Paul Bakker | c8ffbe7 | 2011-12-05 14:22:49 +0000 | [diff] [blame] | 3161 | ret = x509parse_serial_gets( p, n, &entry->serial); |
| 3162 | SAFE_SNPRINTF(); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3163 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3164 | ret = snprintf( p, n, " revocation date: " \ |
| 3165 | "%04d-%02d-%02d %02d:%02d:%02d", |
| 3166 | entry->revocation_date.year, entry->revocation_date.mon, |
| 3167 | entry->revocation_date.day, entry->revocation_date.hour, |
| 3168 | entry->revocation_date.min, entry->revocation_date.sec ); |
Paul Bakker | c8ffbe7 | 2011-12-05 14:22:49 +0000 | [diff] [blame] | 3169 | SAFE_SNPRINTF(); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3170 | |
| 3171 | entry = entry->next; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3172 | } |
| 3173 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3174 | ret = snprintf( p, n, "\n%ssigned using : ", prefix ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3175 | SAFE_SNPRINTF(); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3176 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3177 | ret = oid_get_sig_alg_desc( &crl->sig_oid1, &desc ); |
| 3178 | if( ret != 0 ) |
| 3179 | ret = snprintf( p, n, "???" ); |
| 3180 | else |
| 3181 | ret = snprintf( p, n, desc ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3182 | SAFE_SNPRINTF(); |
| 3183 | |
Paul Bakker | 1e27bb2 | 2009-07-19 20:25:25 +0000 | [diff] [blame] | 3184 | ret = snprintf( p, n, "\n" ); |
| 3185 | SAFE_SNPRINTF(); |
| 3186 | |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 3187 | return( (int) ( size - n ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3188 | } |
| 3189 | |
| 3190 | /* |
Paul Bakker | 40ea7de | 2009-05-03 10:18:48 +0000 | [diff] [blame] | 3191 | * Return 0 if the x509_time is still valid, or 1 otherwise. |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3192 | */ |
Paul Bakker | fa9b100 | 2013-07-03 15:31:03 +0200 | [diff] [blame] | 3193 | #if defined(POLARSSL_HAVE_TIME) |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 3194 | int x509parse_time_expired( const x509_time *to ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3195 | { |
Paul Bakker | cce9d77 | 2011-11-18 14:26:47 +0000 | [diff] [blame] | 3196 | int year, mon, day; |
| 3197 | int hour, min, sec; |
| 3198 | |
| 3199 | #if defined(_WIN32) |
| 3200 | SYSTEMTIME st; |
| 3201 | |
| 3202 | GetLocalTime(&st); |
| 3203 | |
| 3204 | year = st.wYear; |
| 3205 | mon = st.wMonth; |
| 3206 | day = st.wDay; |
| 3207 | hour = st.wHour; |
| 3208 | min = st.wMinute; |
| 3209 | sec = st.wSecond; |
| 3210 | #else |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3211 | struct tm *lt; |
| 3212 | time_t tt; |
| 3213 | |
| 3214 | tt = time( NULL ); |
| 3215 | lt = localtime( &tt ); |
| 3216 | |
Paul Bakker | cce9d77 | 2011-11-18 14:26:47 +0000 | [diff] [blame] | 3217 | year = lt->tm_year + 1900; |
| 3218 | mon = lt->tm_mon + 1; |
| 3219 | day = lt->tm_mday; |
| 3220 | hour = lt->tm_hour; |
| 3221 | min = lt->tm_min; |
| 3222 | sec = lt->tm_sec; |
| 3223 | #endif |
| 3224 | |
| 3225 | if( year > to->year ) |
Paul Bakker | 40ea7de | 2009-05-03 10:18:48 +0000 | [diff] [blame] | 3226 | return( 1 ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3227 | |
Paul Bakker | cce9d77 | 2011-11-18 14:26:47 +0000 | [diff] [blame] | 3228 | if( year == to->year && |
| 3229 | mon > to->mon ) |
Paul Bakker | 40ea7de | 2009-05-03 10:18:48 +0000 | [diff] [blame] | 3230 | return( 1 ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3231 | |
Paul Bakker | cce9d77 | 2011-11-18 14:26:47 +0000 | [diff] [blame] | 3232 | if( year == to->year && |
| 3233 | mon == to->mon && |
| 3234 | day > to->day ) |
Paul Bakker | 40ea7de | 2009-05-03 10:18:48 +0000 | [diff] [blame] | 3235 | return( 1 ); |
| 3236 | |
Paul Bakker | cce9d77 | 2011-11-18 14:26:47 +0000 | [diff] [blame] | 3237 | if( year == to->year && |
| 3238 | mon == to->mon && |
| 3239 | day == to->day && |
| 3240 | hour > to->hour ) |
Paul Bakker | b619499 | 2011-01-16 21:40:22 +0000 | [diff] [blame] | 3241 | return( 1 ); |
| 3242 | |
Paul Bakker | cce9d77 | 2011-11-18 14:26:47 +0000 | [diff] [blame] | 3243 | if( year == to->year && |
| 3244 | mon == to->mon && |
| 3245 | day == to->day && |
| 3246 | hour == to->hour && |
| 3247 | min > to->min ) |
Paul Bakker | b619499 | 2011-01-16 21:40:22 +0000 | [diff] [blame] | 3248 | return( 1 ); |
| 3249 | |
Paul Bakker | cce9d77 | 2011-11-18 14:26:47 +0000 | [diff] [blame] | 3250 | if( year == to->year && |
| 3251 | mon == to->mon && |
| 3252 | day == to->day && |
| 3253 | hour == to->hour && |
| 3254 | min == to->min && |
| 3255 | sec > to->sec ) |
Paul Bakker | b619499 | 2011-01-16 21:40:22 +0000 | [diff] [blame] | 3256 | return( 1 ); |
| 3257 | |
Paul Bakker | 40ea7de | 2009-05-03 10:18:48 +0000 | [diff] [blame] | 3258 | return( 0 ); |
| 3259 | } |
Paul Bakker | fa9b100 | 2013-07-03 15:31:03 +0200 | [diff] [blame] | 3260 | #else /* POLARSSL_HAVE_TIME */ |
| 3261 | int x509parse_time_expired( const x509_time *to ) |
| 3262 | { |
| 3263 | ((void) to); |
| 3264 | return( 0 ); |
| 3265 | } |
| 3266 | #endif /* POLARSSL_HAVE_TIME */ |
Paul Bakker | 40ea7de | 2009-05-03 10:18:48 +0000 | [diff] [blame] | 3267 | |
| 3268 | /* |
| 3269 | * Return 1 if the certificate is revoked, or 0 otherwise. |
| 3270 | */ |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 3271 | int x509parse_revoked( const x509_cert *crt, const x509_crl *crl ) |
Paul Bakker | 40ea7de | 2009-05-03 10:18:48 +0000 | [diff] [blame] | 3272 | { |
Paul Bakker | ff60ee6 | 2010-03-16 21:09:09 +0000 | [diff] [blame] | 3273 | const x509_crl_entry *cur = &crl->entry; |
Paul Bakker | 40ea7de | 2009-05-03 10:18:48 +0000 | [diff] [blame] | 3274 | |
| 3275 | while( cur != NULL && cur->serial.len != 0 ) |
| 3276 | { |
Paul Bakker | a056efc | 2011-01-16 21:38:35 +0000 | [diff] [blame] | 3277 | if( crt->serial.len == cur->serial.len && |
| 3278 | memcmp( crt->serial.p, cur->serial.p, crt->serial.len ) == 0 ) |
Paul Bakker | 40ea7de | 2009-05-03 10:18:48 +0000 | [diff] [blame] | 3279 | { |
| 3280 | if( x509parse_time_expired( &cur->revocation_date ) ) |
| 3281 | return( 1 ); |
| 3282 | } |
| 3283 | |
| 3284 | cur = cur->next; |
| 3285 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3286 | |
| 3287 | return( 0 ); |
| 3288 | } |
| 3289 | |
Paul Bakker | de4d2ea | 2009-10-03 19:58:52 +0000 | [diff] [blame] | 3290 | /* |
Paul Bakker | 76fd75a | 2011-01-16 21:12:10 +0000 | [diff] [blame] | 3291 | * Check that the given certificate is valid accoring to the CRL. |
| 3292 | */ |
| 3293 | static int x509parse_verifycrl(x509_cert *crt, x509_cert *ca, |
| 3294 | x509_crl *crl_list) |
| 3295 | { |
| 3296 | int flags = 0; |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3297 | unsigned char hash[POLARSSL_MD_MAX_SIZE]; |
| 3298 | const md_info_t *md_info; |
Paul Bakker | 76fd75a | 2011-01-16 21:12:10 +0000 | [diff] [blame] | 3299 | |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3300 | if( ca == NULL ) |
| 3301 | return( flags ); |
| 3302 | |
Paul Bakker | 76fd75a | 2011-01-16 21:12:10 +0000 | [diff] [blame] | 3303 | /* |
| 3304 | * TODO: What happens if no CRL is present? |
| 3305 | * Suggestion: Revocation state should be unknown if no CRL is present. |
| 3306 | * For backwards compatibility this is not yet implemented. |
| 3307 | */ |
| 3308 | |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3309 | while( crl_list != NULL ) |
Paul Bakker | 76fd75a | 2011-01-16 21:12:10 +0000 | [diff] [blame] | 3310 | { |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3311 | if( crl_list->version == 0 || |
| 3312 | crl_list->issuer_raw.len != ca->subject_raw.len || |
Paul Bakker | 76fd75a | 2011-01-16 21:12:10 +0000 | [diff] [blame] | 3313 | memcmp( crl_list->issuer_raw.p, ca->subject_raw.p, |
| 3314 | crl_list->issuer_raw.len ) != 0 ) |
| 3315 | { |
| 3316 | crl_list = crl_list->next; |
| 3317 | continue; |
| 3318 | } |
| 3319 | |
| 3320 | /* |
| 3321 | * Check if CRL is correctly signed by the trusted CA |
| 3322 | */ |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3323 | md_info = md_info_from_type( crl_list->sig_md ); |
| 3324 | if( md_info == NULL ) |
| 3325 | { |
| 3326 | /* |
| 3327 | * Cannot check 'unknown' hash |
| 3328 | */ |
| 3329 | flags |= BADCRL_NOT_TRUSTED; |
| 3330 | break; |
| 3331 | } |
Paul Bakker | 76fd75a | 2011-01-16 21:12:10 +0000 | [diff] [blame] | 3332 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3333 | md( md_info, crl_list->tbs.p, crl_list->tbs.len, hash ); |
Paul Bakker | 76fd75a | 2011-01-16 21:12:10 +0000 | [diff] [blame] | 3334 | |
Manuel Pégourié-Gonnard | ff56da3 | 2013-07-11 10:46:21 +0200 | [diff] [blame] | 3335 | /* EC NOT IMPLEMENTED YET */ |
| 3336 | if( ca->pk.type != POLARSSL_PK_RSA ) |
| 3337 | return( POLARSSL_ERR_X509_FEATURE_UNAVAILABLE ); |
| 3338 | |
| 3339 | if( !rsa_pkcs1_verify( pk_rsa( ca->pk ), RSA_PUBLIC, crl_list->sig_md, |
Paul Bakker | 76fd75a | 2011-01-16 21:12:10 +0000 | [diff] [blame] | 3340 | 0, hash, crl_list->sig.p ) == 0 ) |
| 3341 | { |
| 3342 | /* |
| 3343 | * CRL is not trusted |
| 3344 | */ |
| 3345 | flags |= BADCRL_NOT_TRUSTED; |
| 3346 | break; |
| 3347 | } |
| 3348 | |
| 3349 | /* |
| 3350 | * Check for validity of CRL (Do not drop out) |
| 3351 | */ |
| 3352 | if( x509parse_time_expired( &crl_list->next_update ) ) |
| 3353 | flags |= BADCRL_EXPIRED; |
| 3354 | |
| 3355 | /* |
| 3356 | * Check if certificate is revoked |
| 3357 | */ |
| 3358 | if( x509parse_revoked(crt, crl_list) ) |
| 3359 | { |
| 3360 | flags |= BADCERT_REVOKED; |
| 3361 | break; |
| 3362 | } |
| 3363 | |
| 3364 | crl_list = crl_list->next; |
| 3365 | } |
| 3366 | return flags; |
| 3367 | } |
| 3368 | |
Paul Bakker | b6c5d2e | 2013-06-25 16:25:17 +0200 | [diff] [blame] | 3369 | static int x509_wildcard_verify( const char *cn, x509_buf *name ) |
Paul Bakker | a8cd239 | 2012-02-11 16:09:32 +0000 | [diff] [blame] | 3370 | { |
| 3371 | size_t i; |
| 3372 | size_t cn_idx = 0; |
| 3373 | |
Paul Bakker | 57b1298 | 2012-02-11 17:38:38 +0000 | [diff] [blame] | 3374 | if( name->len < 3 || name->p[0] != '*' || name->p[1] != '.' ) |
Paul Bakker | a8cd239 | 2012-02-11 16:09:32 +0000 | [diff] [blame] | 3375 | return( 0 ); |
| 3376 | |
| 3377 | for( i = 0; i < strlen( cn ); ++i ) |
| 3378 | { |
| 3379 | if( cn[i] == '.' ) |
| 3380 | { |
| 3381 | cn_idx = i; |
| 3382 | break; |
| 3383 | } |
| 3384 | } |
| 3385 | |
| 3386 | if( cn_idx == 0 ) |
| 3387 | return( 0 ); |
| 3388 | |
Paul Bakker | 535e97d | 2012-08-23 10:49:55 +0000 | [diff] [blame] | 3389 | if( strlen( cn ) - cn_idx == name->len - 1 && |
| 3390 | memcmp( name->p + 1, cn + cn_idx, name->len - 1 ) == 0 ) |
Paul Bakker | a8cd239 | 2012-02-11 16:09:32 +0000 | [diff] [blame] | 3391 | { |
| 3392 | return( 1 ); |
| 3393 | } |
| 3394 | |
| 3395 | return( 0 ); |
| 3396 | } |
| 3397 | |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3398 | static int x509parse_verify_top( |
| 3399 | x509_cert *child, x509_cert *trust_ca, |
Paul Bakker | 9a73632 | 2012-11-14 12:39:52 +0000 | [diff] [blame] | 3400 | x509_crl *ca_crl, int path_cnt, int *flags, |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3401 | int (*f_vrfy)(void *, x509_cert *, int, int *), |
| 3402 | void *p_vrfy ) |
| 3403 | { |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3404 | int ret; |
Paul Bakker | 9a73632 | 2012-11-14 12:39:52 +0000 | [diff] [blame] | 3405 | int ca_flags = 0, check_path_cnt = path_cnt + 1; |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3406 | unsigned char hash[POLARSSL_MD_MAX_SIZE]; |
| 3407 | const md_info_t *md_info; |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3408 | |
| 3409 | if( x509parse_time_expired( &child->valid_to ) ) |
| 3410 | *flags |= BADCERT_EXPIRED; |
| 3411 | |
| 3412 | /* |
| 3413 | * Child is the top of the chain. Check against the trust_ca list. |
| 3414 | */ |
| 3415 | *flags |= BADCERT_NOT_TRUSTED; |
| 3416 | |
| 3417 | while( trust_ca != NULL ) |
| 3418 | { |
| 3419 | if( trust_ca->version == 0 || |
| 3420 | child->issuer_raw.len != trust_ca->subject_raw.len || |
| 3421 | memcmp( child->issuer_raw.p, trust_ca->subject_raw.p, |
| 3422 | child->issuer_raw.len ) != 0 ) |
| 3423 | { |
| 3424 | trust_ca = trust_ca->next; |
| 3425 | continue; |
| 3426 | } |
| 3427 | |
Paul Bakker | 9a73632 | 2012-11-14 12:39:52 +0000 | [diff] [blame] | 3428 | /* |
| 3429 | * Reduce path_len to check against if top of the chain is |
| 3430 | * the same as the trusted CA |
| 3431 | */ |
| 3432 | if( child->subject_raw.len == trust_ca->subject_raw.len && |
| 3433 | memcmp( child->subject_raw.p, trust_ca->subject_raw.p, |
| 3434 | child->issuer_raw.len ) == 0 ) |
| 3435 | { |
| 3436 | check_path_cnt--; |
| 3437 | } |
| 3438 | |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3439 | if( trust_ca->max_pathlen > 0 && |
Paul Bakker | 9a73632 | 2012-11-14 12:39:52 +0000 | [diff] [blame] | 3440 | trust_ca->max_pathlen < check_path_cnt ) |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3441 | { |
| 3442 | trust_ca = trust_ca->next; |
| 3443 | continue; |
| 3444 | } |
| 3445 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3446 | md_info = md_info_from_type( child->sig_md ); |
| 3447 | if( md_info == NULL ) |
| 3448 | { |
| 3449 | /* |
| 3450 | * Cannot check 'unknown' hash |
| 3451 | */ |
| 3452 | continue; |
| 3453 | } |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3454 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3455 | md( md_info, child->tbs.p, child->tbs.len, hash ); |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3456 | |
Manuel Pégourié-Gonnard | ff56da3 | 2013-07-11 10:46:21 +0200 | [diff] [blame] | 3457 | /* EC NOT IMPLEMENTED YET */ |
| 3458 | if( trust_ca->pk.type != POLARSSL_PK_RSA ) |
| 3459 | return( POLARSSL_ERR_X509_FEATURE_UNAVAILABLE ); |
| 3460 | |
| 3461 | if( rsa_pkcs1_verify( pk_rsa( trust_ca->pk ), RSA_PUBLIC, child->sig_md, |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3462 | 0, hash, child->sig.p ) != 0 ) |
| 3463 | { |
| 3464 | trust_ca = trust_ca->next; |
| 3465 | continue; |
| 3466 | } |
| 3467 | |
| 3468 | /* |
| 3469 | * Top of chain is signed by a trusted CA |
| 3470 | */ |
| 3471 | *flags &= ~BADCERT_NOT_TRUSTED; |
| 3472 | break; |
| 3473 | } |
| 3474 | |
Paul Bakker | 9a73632 | 2012-11-14 12:39:52 +0000 | [diff] [blame] | 3475 | /* |
Paul Bakker | 3497d8c | 2012-11-24 11:53:17 +0100 | [diff] [blame] | 3476 | * If top of chain is not the same as the trusted CA send a verify request |
| 3477 | * to the callback for any issues with validity and CRL presence for the |
| 3478 | * trusted CA certificate. |
Paul Bakker | 9a73632 | 2012-11-14 12:39:52 +0000 | [diff] [blame] | 3479 | */ |
| 3480 | if( trust_ca != NULL && |
| 3481 | ( child->subject_raw.len != trust_ca->subject_raw.len || |
| 3482 | memcmp( child->subject_raw.p, trust_ca->subject_raw.p, |
| 3483 | child->issuer_raw.len ) != 0 ) ) |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3484 | { |
| 3485 | /* Check trusted CA's CRL for then chain's top crt */ |
| 3486 | *flags |= x509parse_verifycrl( child, trust_ca, ca_crl ); |
| 3487 | |
| 3488 | if( x509parse_time_expired( &trust_ca->valid_to ) ) |
| 3489 | ca_flags |= BADCERT_EXPIRED; |
| 3490 | |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3491 | if( NULL != f_vrfy ) |
| 3492 | { |
Paul Bakker | 9a73632 | 2012-11-14 12:39:52 +0000 | [diff] [blame] | 3493 | if( ( ret = f_vrfy( p_vrfy, trust_ca, path_cnt + 1, &ca_flags ) ) != 0 ) |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3494 | return( ret ); |
| 3495 | } |
| 3496 | } |
| 3497 | |
| 3498 | /* Call callback on top cert */ |
| 3499 | if( NULL != f_vrfy ) |
| 3500 | { |
Paul Bakker | 9a73632 | 2012-11-14 12:39:52 +0000 | [diff] [blame] | 3501 | if( ( ret = f_vrfy(p_vrfy, child, path_cnt, flags ) ) != 0 ) |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3502 | return( ret ); |
| 3503 | } |
| 3504 | |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3505 | *flags |= ca_flags; |
| 3506 | |
| 3507 | return( 0 ); |
| 3508 | } |
| 3509 | |
| 3510 | static int x509parse_verify_child( |
| 3511 | x509_cert *child, x509_cert *parent, x509_cert *trust_ca, |
Paul Bakker | 9a73632 | 2012-11-14 12:39:52 +0000 | [diff] [blame] | 3512 | x509_crl *ca_crl, int path_cnt, int *flags, |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3513 | int (*f_vrfy)(void *, x509_cert *, int, int *), |
| 3514 | void *p_vrfy ) |
| 3515 | { |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3516 | int ret; |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3517 | int parent_flags = 0; |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3518 | unsigned char hash[POLARSSL_MD_MAX_SIZE]; |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3519 | x509_cert *grandparent; |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3520 | const md_info_t *md_info; |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3521 | |
| 3522 | if( x509parse_time_expired( &child->valid_to ) ) |
| 3523 | *flags |= BADCERT_EXPIRED; |
| 3524 | |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3525 | md_info = md_info_from_type( child->sig_md ); |
| 3526 | if( md_info == NULL ) |
| 3527 | { |
| 3528 | /* |
| 3529 | * Cannot check 'unknown' hash |
| 3530 | */ |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3531 | *flags |= BADCERT_NOT_TRUSTED; |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3532 | } |
| 3533 | else |
| 3534 | { |
| 3535 | md( md_info, child->tbs.p, child->tbs.len, hash ); |
| 3536 | |
Manuel Pégourié-Gonnard | ff56da3 | 2013-07-11 10:46:21 +0200 | [diff] [blame] | 3537 | /* EC NOT IMPLEMENTED YET */ |
| 3538 | if( parent->pk.type != POLARSSL_PK_RSA ) |
| 3539 | return( POLARSSL_ERR_X509_FEATURE_UNAVAILABLE ); |
| 3540 | |
| 3541 | if( rsa_pkcs1_verify( pk_rsa( parent->pk ), RSA_PUBLIC, child->sig_md, |
| 3542 | 0, hash, child->sig.p ) != 0 ) |
| 3543 | { |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3544 | *flags |= BADCERT_NOT_TRUSTED; |
Manuel Pégourié-Gonnard | ff56da3 | 2013-07-11 10:46:21 +0200 | [diff] [blame] | 3545 | } |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3546 | } |
| 3547 | |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3548 | /* Check trusted CA's CRL for the given crt */ |
| 3549 | *flags |= x509parse_verifycrl(child, parent, ca_crl); |
| 3550 | |
| 3551 | grandparent = parent->next; |
| 3552 | |
| 3553 | while( grandparent != NULL ) |
| 3554 | { |
| 3555 | if( grandparent->version == 0 || |
| 3556 | grandparent->ca_istrue == 0 || |
| 3557 | parent->issuer_raw.len != grandparent->subject_raw.len || |
| 3558 | memcmp( parent->issuer_raw.p, grandparent->subject_raw.p, |
| 3559 | parent->issuer_raw.len ) != 0 ) |
| 3560 | { |
| 3561 | grandparent = grandparent->next; |
| 3562 | continue; |
| 3563 | } |
| 3564 | break; |
| 3565 | } |
| 3566 | |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3567 | if( grandparent != NULL ) |
| 3568 | { |
| 3569 | /* |
| 3570 | * Part of the chain |
| 3571 | */ |
Paul Bakker | 9a73632 | 2012-11-14 12:39:52 +0000 | [diff] [blame] | 3572 | ret = x509parse_verify_child( parent, grandparent, trust_ca, ca_crl, path_cnt + 1, &parent_flags, f_vrfy, p_vrfy ); |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3573 | if( ret != 0 ) |
| 3574 | return( ret ); |
| 3575 | } |
| 3576 | else |
| 3577 | { |
Paul Bakker | 9a73632 | 2012-11-14 12:39:52 +0000 | [diff] [blame] | 3578 | ret = x509parse_verify_top( parent, trust_ca, ca_crl, path_cnt + 1, &parent_flags, f_vrfy, p_vrfy ); |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3579 | if( ret != 0 ) |
| 3580 | return( ret ); |
| 3581 | } |
| 3582 | |
| 3583 | /* child is verified to be a child of the parent, call verify callback */ |
| 3584 | if( NULL != f_vrfy ) |
Paul Bakker | 9a73632 | 2012-11-14 12:39:52 +0000 | [diff] [blame] | 3585 | if( ( ret = f_vrfy( p_vrfy, child, path_cnt, flags ) ) != 0 ) |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3586 | return( ret ); |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3587 | |
| 3588 | *flags |= parent_flags; |
| 3589 | |
| 3590 | return( 0 ); |
| 3591 | } |
| 3592 | |
Paul Bakker | 76fd75a | 2011-01-16 21:12:10 +0000 | [diff] [blame] | 3593 | /* |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3594 | * Verify the certificate validity |
| 3595 | */ |
| 3596 | int x509parse_verify( x509_cert *crt, |
| 3597 | x509_cert *trust_ca, |
Paul Bakker | 40ea7de | 2009-05-03 10:18:48 +0000 | [diff] [blame] | 3598 | x509_crl *ca_crl, |
Paul Bakker | b63b0af | 2011-01-13 17:54:59 +0000 | [diff] [blame] | 3599 | const char *cn, int *flags, |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3600 | int (*f_vrfy)(void *, x509_cert *, int, int *), |
Paul Bakker | b63b0af | 2011-01-13 17:54:59 +0000 | [diff] [blame] | 3601 | void *p_vrfy ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3602 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 3603 | size_t cn_len; |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3604 | int ret; |
Paul Bakker | 9a73632 | 2012-11-14 12:39:52 +0000 | [diff] [blame] | 3605 | int pathlen = 0; |
Paul Bakker | 76fd75a | 2011-01-16 21:12:10 +0000 | [diff] [blame] | 3606 | x509_cert *parent; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3607 | x509_name *name; |
Paul Bakker | a8cd239 | 2012-02-11 16:09:32 +0000 | [diff] [blame] | 3608 | x509_sequence *cur = NULL; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3609 | |
Paul Bakker | 40ea7de | 2009-05-03 10:18:48 +0000 | [diff] [blame] | 3610 | *flags = 0; |
| 3611 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3612 | if( cn != NULL ) |
| 3613 | { |
| 3614 | name = &crt->subject; |
| 3615 | cn_len = strlen( cn ); |
| 3616 | |
Paul Bakker | 4d2c124 | 2012-05-10 14:12:46 +0000 | [diff] [blame] | 3617 | if( crt->ext_types & EXT_SUBJECT_ALT_NAME ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3618 | { |
Paul Bakker | 4d2c124 | 2012-05-10 14:12:46 +0000 | [diff] [blame] | 3619 | cur = &crt->subject_alt_names; |
| 3620 | |
| 3621 | while( cur != NULL ) |
Paul Bakker | a8cd239 | 2012-02-11 16:09:32 +0000 | [diff] [blame] | 3622 | { |
Paul Bakker | 535e97d | 2012-08-23 10:49:55 +0000 | [diff] [blame] | 3623 | if( cur->buf.len == cn_len && |
| 3624 | memcmp( cn, cur->buf.p, cn_len ) == 0 ) |
Paul Bakker | a8cd239 | 2012-02-11 16:09:32 +0000 | [diff] [blame] | 3625 | break; |
| 3626 | |
Paul Bakker | 535e97d | 2012-08-23 10:49:55 +0000 | [diff] [blame] | 3627 | if( cur->buf.len > 2 && |
| 3628 | memcmp( cur->buf.p, "*.", 2 ) == 0 && |
Paul Bakker | 4d2c124 | 2012-05-10 14:12:46 +0000 | [diff] [blame] | 3629 | x509_wildcard_verify( cn, &cur->buf ) ) |
Paul Bakker | a8cd239 | 2012-02-11 16:09:32 +0000 | [diff] [blame] | 3630 | break; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3631 | |
Paul Bakker | 4d2c124 | 2012-05-10 14:12:46 +0000 | [diff] [blame] | 3632 | cur = cur->next; |
Paul Bakker | a8cd239 | 2012-02-11 16:09:32 +0000 | [diff] [blame] | 3633 | } |
| 3634 | |
| 3635 | if( cur == NULL ) |
| 3636 | *flags |= BADCERT_CN_MISMATCH; |
| 3637 | } |
Paul Bakker | 4d2c124 | 2012-05-10 14:12:46 +0000 | [diff] [blame] | 3638 | else |
| 3639 | { |
| 3640 | while( name != NULL ) |
| 3641 | { |
Paul Bakker | c70b982 | 2013-04-07 22:00:46 +0200 | [diff] [blame] | 3642 | if( OID_CMP( OID_AT_CN, &name->oid ) ) |
Paul Bakker | 4d2c124 | 2012-05-10 14:12:46 +0000 | [diff] [blame] | 3643 | { |
Paul Bakker | 535e97d | 2012-08-23 10:49:55 +0000 | [diff] [blame] | 3644 | if( name->val.len == cn_len && |
| 3645 | memcmp( name->val.p, cn, cn_len ) == 0 ) |
Paul Bakker | 4d2c124 | 2012-05-10 14:12:46 +0000 | [diff] [blame] | 3646 | break; |
| 3647 | |
Paul Bakker | 535e97d | 2012-08-23 10:49:55 +0000 | [diff] [blame] | 3648 | if( name->val.len > 2 && |
| 3649 | memcmp( name->val.p, "*.", 2 ) == 0 && |
Paul Bakker | 4d2c124 | 2012-05-10 14:12:46 +0000 | [diff] [blame] | 3650 | x509_wildcard_verify( cn, &name->val ) ) |
| 3651 | break; |
| 3652 | } |
| 3653 | |
| 3654 | name = name->next; |
| 3655 | } |
| 3656 | |
| 3657 | if( name == NULL ) |
| 3658 | *flags |= BADCERT_CN_MISMATCH; |
| 3659 | } |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3660 | } |
| 3661 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3662 | /* |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3663 | * Iterate upwards in the given cert chain, to find our crt parent. |
| 3664 | * Ignore any upper cert with CA != TRUE. |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3665 | */ |
Paul Bakker | 76fd75a | 2011-01-16 21:12:10 +0000 | [diff] [blame] | 3666 | parent = crt->next; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3667 | |
Paul Bakker | 76fd75a | 2011-01-16 21:12:10 +0000 | [diff] [blame] | 3668 | while( parent != NULL && parent->version != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3669 | { |
Paul Bakker | 76fd75a | 2011-01-16 21:12:10 +0000 | [diff] [blame] | 3670 | if( parent->ca_istrue == 0 || |
| 3671 | crt->issuer_raw.len != parent->subject_raw.len || |
| 3672 | memcmp( crt->issuer_raw.p, parent->subject_raw.p, |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3673 | crt->issuer_raw.len ) != 0 ) |
| 3674 | { |
Paul Bakker | 76fd75a | 2011-01-16 21:12:10 +0000 | [diff] [blame] | 3675 | parent = parent->next; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3676 | continue; |
| 3677 | } |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3678 | break; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3679 | } |
| 3680 | |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3681 | if( parent != NULL ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3682 | { |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3683 | /* |
| 3684 | * Part of the chain |
| 3685 | */ |
Paul Bakker | 9a73632 | 2012-11-14 12:39:52 +0000 | [diff] [blame] | 3686 | ret = x509parse_verify_child( crt, parent, trust_ca, ca_crl, pathlen, flags, f_vrfy, p_vrfy ); |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3687 | if( ret != 0 ) |
| 3688 | return( ret ); |
| 3689 | } |
| 3690 | else |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 3691 | { |
Paul Bakker | 9a73632 | 2012-11-14 12:39:52 +0000 | [diff] [blame] | 3692 | ret = x509parse_verify_top( crt, trust_ca, ca_crl, pathlen, flags, f_vrfy, p_vrfy ); |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3693 | if( ret != 0 ) |
| 3694 | return( ret ); |
Paul Bakker | b63b0af | 2011-01-13 17:54:59 +0000 | [diff] [blame] | 3695 | } |
Paul Bakker | 915275b | 2012-09-28 07:10:55 +0000 | [diff] [blame] | 3696 | |
| 3697 | if( *flags != 0 ) |
Paul Bakker | 76fd75a | 2011-01-16 21:12:10 +0000 | [diff] [blame] | 3698 | return( POLARSSL_ERR_X509_CERT_VERIFY_FAILED ); |
Paul Bakker | b63b0af | 2011-01-13 17:54:59 +0000 | [diff] [blame] | 3699 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3700 | return( 0 ); |
| 3701 | } |
| 3702 | |
| 3703 | /* |
| 3704 | * Unallocate all certificate data |
| 3705 | */ |
| 3706 | void x509_free( x509_cert *crt ) |
| 3707 | { |
| 3708 | x509_cert *cert_cur = crt; |
| 3709 | x509_cert *cert_prv; |
| 3710 | x509_name *name_cur; |
| 3711 | x509_name *name_prv; |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 3712 | x509_sequence *seq_cur; |
| 3713 | x509_sequence *seq_prv; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3714 | |
| 3715 | if( crt == NULL ) |
| 3716 | return; |
| 3717 | |
| 3718 | do |
| 3719 | { |
Manuel Pégourié-Gonnard | 674b224 | 2013-07-10 14:32:58 +0200 | [diff] [blame] | 3720 | pk_free( &cert_cur->pk ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3721 | |
| 3722 | name_cur = cert_cur->issuer.next; |
| 3723 | while( name_cur != NULL ) |
| 3724 | { |
| 3725 | name_prv = name_cur; |
| 3726 | name_cur = name_cur->next; |
| 3727 | memset( name_prv, 0, sizeof( x509_name ) ); |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 3728 | polarssl_free( name_prv ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3729 | } |
| 3730 | |
| 3731 | name_cur = cert_cur->subject.next; |
| 3732 | while( name_cur != NULL ) |
| 3733 | { |
| 3734 | name_prv = name_cur; |
| 3735 | name_cur = name_cur->next; |
| 3736 | memset( name_prv, 0, sizeof( x509_name ) ); |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 3737 | polarssl_free( name_prv ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3738 | } |
| 3739 | |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 3740 | seq_cur = cert_cur->ext_key_usage.next; |
| 3741 | while( seq_cur != NULL ) |
| 3742 | { |
| 3743 | seq_prv = seq_cur; |
| 3744 | seq_cur = seq_cur->next; |
| 3745 | memset( seq_prv, 0, sizeof( x509_sequence ) ); |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 3746 | polarssl_free( seq_prv ); |
Paul Bakker | 74111d3 | 2011-01-15 16:57:55 +0000 | [diff] [blame] | 3747 | } |
| 3748 | |
Paul Bakker | 8afa70d | 2012-02-11 18:42:45 +0000 | [diff] [blame] | 3749 | seq_cur = cert_cur->subject_alt_names.next; |
| 3750 | while( seq_cur != NULL ) |
| 3751 | { |
| 3752 | seq_prv = seq_cur; |
| 3753 | seq_cur = seq_cur->next; |
| 3754 | memset( seq_prv, 0, sizeof( x509_sequence ) ); |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 3755 | polarssl_free( seq_prv ); |
Paul Bakker | 8afa70d | 2012-02-11 18:42:45 +0000 | [diff] [blame] | 3756 | } |
| 3757 | |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3758 | if( cert_cur->raw.p != NULL ) |
| 3759 | { |
| 3760 | memset( cert_cur->raw.p, 0, cert_cur->raw.len ); |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 3761 | polarssl_free( cert_cur->raw.p ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3762 | } |
| 3763 | |
| 3764 | cert_cur = cert_cur->next; |
| 3765 | } |
| 3766 | while( cert_cur != NULL ); |
| 3767 | |
| 3768 | cert_cur = crt; |
| 3769 | do |
| 3770 | { |
| 3771 | cert_prv = cert_cur; |
| 3772 | cert_cur = cert_cur->next; |
| 3773 | |
| 3774 | memset( cert_prv, 0, sizeof( x509_cert ) ); |
| 3775 | if( cert_prv != crt ) |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 3776 | polarssl_free( cert_prv ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3777 | } |
| 3778 | while( cert_cur != NULL ); |
| 3779 | } |
| 3780 | |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3781 | /* |
| 3782 | * Unallocate all CRL data |
| 3783 | */ |
| 3784 | void x509_crl_free( x509_crl *crl ) |
| 3785 | { |
| 3786 | x509_crl *crl_cur = crl; |
| 3787 | x509_crl *crl_prv; |
| 3788 | x509_name *name_cur; |
| 3789 | x509_name *name_prv; |
| 3790 | x509_crl_entry *entry_cur; |
| 3791 | x509_crl_entry *entry_prv; |
| 3792 | |
| 3793 | if( crl == NULL ) |
| 3794 | return; |
| 3795 | |
| 3796 | do |
| 3797 | { |
| 3798 | name_cur = crl_cur->issuer.next; |
| 3799 | while( name_cur != NULL ) |
| 3800 | { |
| 3801 | name_prv = name_cur; |
| 3802 | name_cur = name_cur->next; |
| 3803 | memset( name_prv, 0, sizeof( x509_name ) ); |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 3804 | polarssl_free( name_prv ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3805 | } |
| 3806 | |
| 3807 | entry_cur = crl_cur->entry.next; |
| 3808 | while( entry_cur != NULL ) |
| 3809 | { |
| 3810 | entry_prv = entry_cur; |
| 3811 | entry_cur = entry_cur->next; |
| 3812 | memset( entry_prv, 0, sizeof( x509_crl_entry ) ); |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 3813 | polarssl_free( entry_prv ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3814 | } |
| 3815 | |
| 3816 | if( crl_cur->raw.p != NULL ) |
| 3817 | { |
| 3818 | memset( crl_cur->raw.p, 0, crl_cur->raw.len ); |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 3819 | polarssl_free( crl_cur->raw.p ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3820 | } |
| 3821 | |
| 3822 | crl_cur = crl_cur->next; |
| 3823 | } |
| 3824 | while( crl_cur != NULL ); |
| 3825 | |
| 3826 | crl_cur = crl; |
| 3827 | do |
| 3828 | { |
| 3829 | crl_prv = crl_cur; |
| 3830 | crl_cur = crl_cur->next; |
| 3831 | |
| 3832 | memset( crl_prv, 0, sizeof( x509_crl ) ); |
| 3833 | if( crl_prv != crl ) |
Paul Bakker | 6e339b5 | 2013-07-03 13:37:05 +0200 | [diff] [blame] | 3834 | polarssl_free( crl_prv ); |
Paul Bakker | d98030e | 2009-05-02 15:13:40 +0000 | [diff] [blame] | 3835 | } |
| 3836 | while( crl_cur != NULL ); |
| 3837 | } |
| 3838 | |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 3839 | #if defined(POLARSSL_SELF_TEST) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3840 | |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 3841 | #include "polarssl/certs.h" |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3842 | |
| 3843 | /* |
| 3844 | * Checkup routine |
| 3845 | */ |
| 3846 | int x509_self_test( int verbose ) |
| 3847 | { |
Paul Bakker | 5690efc | 2011-05-26 13:16:06 +0000 | [diff] [blame] | 3848 | #if defined(POLARSSL_CERTS_C) && defined(POLARSSL_MD5_C) |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 3849 | int ret; |
| 3850 | int flags; |
| 3851 | size_t i, j; |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3852 | x509_cert cacert; |
| 3853 | x509_cert clicert; |
| 3854 | rsa_context rsa; |
Paul Bakker | 5690efc | 2011-05-26 13:16:06 +0000 | [diff] [blame] | 3855 | #if defined(POLARSSL_DHM_C) |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 3856 | dhm_context dhm; |
Paul Bakker | 5690efc | 2011-05-26 13:16:06 +0000 | [diff] [blame] | 3857 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3858 | |
| 3859 | if( verbose != 0 ) |
| 3860 | printf( " X.509 certificate load: " ); |
| 3861 | |
| 3862 | memset( &clicert, 0, sizeof( x509_cert ) ); |
| 3863 | |
Paul Bakker | 3c2122f | 2013-06-24 19:03:14 +0200 | [diff] [blame] | 3864 | ret = x509parse_crt( &clicert, (const unsigned char *) test_cli_crt, |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 3865 | strlen( test_cli_crt ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3866 | if( ret != 0 ) |
| 3867 | { |
| 3868 | if( verbose != 0 ) |
| 3869 | printf( "failed\n" ); |
| 3870 | |
| 3871 | return( ret ); |
| 3872 | } |
| 3873 | |
| 3874 | memset( &cacert, 0, sizeof( x509_cert ) ); |
| 3875 | |
Paul Bakker | 3c2122f | 2013-06-24 19:03:14 +0200 | [diff] [blame] | 3876 | ret = x509parse_crt( &cacert, (const unsigned char *) test_ca_crt, |
Paul Bakker | 69e095c | 2011-12-10 21:55:01 +0000 | [diff] [blame] | 3877 | strlen( test_ca_crt ) ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3878 | if( ret != 0 ) |
| 3879 | { |
| 3880 | if( verbose != 0 ) |
| 3881 | printf( "failed\n" ); |
| 3882 | |
| 3883 | return( ret ); |
| 3884 | } |
| 3885 | |
| 3886 | if( verbose != 0 ) |
| 3887 | printf( "passed\n X.509 private key load: " ); |
| 3888 | |
| 3889 | i = strlen( test_ca_key ); |
| 3890 | j = strlen( test_ca_pwd ); |
| 3891 | |
Paul Bakker | 66b78b2 | 2011-03-25 14:22:50 +0000 | [diff] [blame] | 3892 | rsa_init( &rsa, RSA_PKCS_V15, 0 ); |
| 3893 | |
Manuel Pégourié-Gonnard | ba4878a | 2013-06-27 10:51:01 +0200 | [diff] [blame] | 3894 | if( ( ret = x509parse_key_rsa( &rsa, |
Paul Bakker | 3c2122f | 2013-06-24 19:03:14 +0200 | [diff] [blame] | 3895 | (const unsigned char *) test_ca_key, i, |
| 3896 | (const unsigned char *) test_ca_pwd, j ) ) != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3897 | { |
| 3898 | if( verbose != 0 ) |
| 3899 | printf( "failed\n" ); |
| 3900 | |
| 3901 | return( ret ); |
| 3902 | } |
| 3903 | |
| 3904 | if( verbose != 0 ) |
| 3905 | printf( "passed\n X.509 signature verify: "); |
| 3906 | |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 3907 | ret = x509parse_verify( &clicert, &cacert, NULL, "PolarSSL Client 2", &flags, NULL, NULL ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3908 | if( ret != 0 ) |
| 3909 | { |
Paul Bakker | 23986e5 | 2011-04-24 08:57:21 +0000 | [diff] [blame] | 3910 | printf("%02x", flags); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3911 | if( verbose != 0 ) |
| 3912 | printf( "failed\n" ); |
| 3913 | |
| 3914 | return( ret ); |
| 3915 | } |
| 3916 | |
Paul Bakker | 5690efc | 2011-05-26 13:16:06 +0000 | [diff] [blame] | 3917 | #if defined(POLARSSL_DHM_C) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3918 | if( verbose != 0 ) |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 3919 | printf( "passed\n X.509 DHM parameter load: " ); |
| 3920 | |
| 3921 | i = strlen( test_dhm_params ); |
| 3922 | j = strlen( test_ca_pwd ); |
| 3923 | |
Paul Bakker | 3c2122f | 2013-06-24 19:03:14 +0200 | [diff] [blame] | 3924 | if( ( ret = x509parse_dhm( &dhm, (const unsigned char *) test_dhm_params, i ) ) != 0 ) |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 3925 | { |
| 3926 | if( verbose != 0 ) |
| 3927 | printf( "failed\n" ); |
| 3928 | |
| 3929 | return( ret ); |
| 3930 | } |
| 3931 | |
| 3932 | if( verbose != 0 ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3933 | printf( "passed\n\n" ); |
Paul Bakker | 5690efc | 2011-05-26 13:16:06 +0000 | [diff] [blame] | 3934 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3935 | |
| 3936 | x509_free( &cacert ); |
| 3937 | x509_free( &clicert ); |
| 3938 | rsa_free( &rsa ); |
Paul Bakker | 5690efc | 2011-05-26 13:16:06 +0000 | [diff] [blame] | 3939 | #if defined(POLARSSL_DHM_C) |
Paul Bakker | 1b57b06 | 2011-01-06 15:48:19 +0000 | [diff] [blame] | 3940 | dhm_free( &dhm ); |
Paul Bakker | 5690efc | 2011-05-26 13:16:06 +0000 | [diff] [blame] | 3941 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3942 | |
| 3943 | return( 0 ); |
Paul Bakker | de4d2ea | 2009-10-03 19:58:52 +0000 | [diff] [blame] | 3944 | #else |
| 3945 | ((void) verbose); |
| 3946 | return( POLARSSL_ERR_X509_FEATURE_UNAVAILABLE ); |
| 3947 | #endif |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 3948 | } |
| 3949 | |
| 3950 | #endif |
| 3951 | |
| 3952 | #endif |