Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1 | /* |
| 2 | * X.509 certificate and private key decoding |
| 3 | * |
Paul Bakker | e0ccd0a | 2009-01-04 16:27:10 +0000 | [diff] [blame^] | 4 | * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine |
| 5 | * |
| 6 | * Copyright (C) 2009 Paul Bakker |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License along |
| 19 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 21 | */ |
| 22 | /* |
| 23 | * The ITU-T X.509 standard defines a certificat format for PKI. |
| 24 | * |
| 25 | * http://www.ietf.org/rfc/rfc2459.txt |
| 26 | * http://www.ietf.org/rfc/rfc3279.txt |
| 27 | * |
| 28 | * ftp://ftp.rsasecurity.com/pub/pkcs/ascii/pkcs-1v2.asc |
| 29 | * |
| 30 | * http://www.itu.int/ITU-T/studygroups/com17/languages/X.680-0207.pdf |
| 31 | * http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf |
| 32 | */ |
| 33 | |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 34 | #include "polarssl/config.h" |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 35 | |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 36 | #if defined(POLARSSL_X509_PARSE_C) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 37 | |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 38 | #include "polarssl/x509.h" |
| 39 | #include "polarssl/base64.h" |
| 40 | #include "polarssl/des.h" |
| 41 | #include "polarssl/md2.h" |
| 42 | #include "polarssl/md4.h" |
| 43 | #include "polarssl/md5.h" |
| 44 | #include "polarssl/sha1.h" |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 45 | |
| 46 | #include <string.h> |
| 47 | #include <stdlib.h> |
| 48 | #include <stdio.h> |
| 49 | #include <time.h> |
| 50 | |
| 51 | /* |
| 52 | * ASN.1 DER decoding routines |
| 53 | */ |
| 54 | static int asn1_get_len( unsigned char **p, |
| 55 | unsigned char *end, |
| 56 | int *len ) |
| 57 | { |
| 58 | if( ( end - *p ) < 1 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 59 | return( POLARSSL_ERR_ASN1_OUT_OF_DATA ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 60 | |
| 61 | if( ( **p & 0x80 ) == 0 ) |
| 62 | *len = *(*p)++; |
| 63 | else |
| 64 | { |
| 65 | switch( **p & 0x7F ) |
| 66 | { |
| 67 | case 1: |
| 68 | if( ( end - *p ) < 2 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 69 | return( POLARSSL_ERR_ASN1_OUT_OF_DATA ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 70 | |
| 71 | *len = (*p)[1]; |
| 72 | (*p) += 2; |
| 73 | break; |
| 74 | |
| 75 | case 2: |
| 76 | if( ( end - *p ) < 3 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 77 | return( POLARSSL_ERR_ASN1_OUT_OF_DATA ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 78 | |
| 79 | *len = ( (*p)[1] << 8 ) | (*p)[2]; |
| 80 | (*p) += 3; |
| 81 | break; |
| 82 | |
| 83 | default: |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 84 | return( POLARSSL_ERR_ASN1_INVALID_LENGTH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 85 | break; |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | if( *len > (int) ( end - *p ) ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 90 | return( POLARSSL_ERR_ASN1_OUT_OF_DATA ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 91 | |
| 92 | return( 0 ); |
| 93 | } |
| 94 | |
| 95 | static int asn1_get_tag( unsigned char **p, |
| 96 | unsigned char *end, |
| 97 | int *len, int tag ) |
| 98 | { |
| 99 | if( ( end - *p ) < 1 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 100 | return( POLARSSL_ERR_ASN1_OUT_OF_DATA ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 101 | |
| 102 | if( **p != tag ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 103 | return( POLARSSL_ERR_ASN1_UNEXPECTED_TAG ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 104 | |
| 105 | (*p)++; |
| 106 | |
| 107 | return( asn1_get_len( p, end, len ) ); |
| 108 | } |
| 109 | |
| 110 | static int asn1_get_bool( unsigned char **p, |
| 111 | unsigned char *end, |
| 112 | int *val ) |
| 113 | { |
| 114 | int ret, len; |
| 115 | |
| 116 | if( ( ret = asn1_get_tag( p, end, &len, ASN1_BOOLEAN ) ) != 0 ) |
| 117 | return( ret ); |
| 118 | |
| 119 | if( len != 1 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 120 | return( POLARSSL_ERR_ASN1_INVALID_LENGTH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 121 | |
| 122 | *val = ( **p != 0 ) ? 1 : 0; |
| 123 | (*p)++; |
| 124 | |
| 125 | return( 0 ); |
| 126 | } |
| 127 | |
| 128 | static int asn1_get_int( unsigned char **p, |
| 129 | unsigned char *end, |
| 130 | int *val ) |
| 131 | { |
| 132 | int ret, len; |
| 133 | |
| 134 | if( ( ret = asn1_get_tag( p, end, &len, ASN1_INTEGER ) ) != 0 ) |
| 135 | return( ret ); |
| 136 | |
| 137 | if( len > (int) sizeof( int ) || ( **p & 0x80 ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 138 | return( POLARSSL_ERR_ASN1_INVALID_LENGTH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 139 | |
| 140 | *val = 0; |
| 141 | |
| 142 | while( len-- > 0 ) |
| 143 | { |
| 144 | *val = ( *val << 8 ) | **p; |
| 145 | (*p)++; |
| 146 | } |
| 147 | |
| 148 | return( 0 ); |
| 149 | } |
| 150 | |
| 151 | static int asn1_get_mpi( unsigned char **p, |
| 152 | unsigned char *end, |
| 153 | mpi *X ) |
| 154 | { |
| 155 | int ret, len; |
| 156 | |
| 157 | if( ( ret = asn1_get_tag( p, end, &len, ASN1_INTEGER ) ) != 0 ) |
| 158 | return( ret ); |
| 159 | |
| 160 | ret = mpi_read_binary( X, *p, len ); |
| 161 | |
| 162 | *p += len; |
| 163 | |
| 164 | return( ret ); |
| 165 | } |
| 166 | |
| 167 | /* |
| 168 | * Version ::= INTEGER { v1(0), v2(1), v3(2) } |
| 169 | */ |
| 170 | static int x509_get_version( unsigned char **p, |
| 171 | unsigned char *end, |
| 172 | int *ver ) |
| 173 | { |
| 174 | int ret, len; |
| 175 | |
| 176 | if( ( ret = asn1_get_tag( p, end, &len, |
| 177 | ASN1_CONTEXT_SPECIFIC | ASN1_CONSTRUCTED | 0 ) ) != 0 ) |
| 178 | { |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 179 | if( ret == POLARSSL_ERR_ASN1_UNEXPECTED_TAG ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 180 | return( *ver = 0 ); |
| 181 | |
| 182 | return( ret ); |
| 183 | } |
| 184 | |
| 185 | end = *p + len; |
| 186 | |
| 187 | if( ( ret = asn1_get_int( p, end, ver ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 188 | return( POLARSSL_ERR_X509_CERT_INVALID_VERSION | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 189 | |
| 190 | if( *p != end ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 191 | return( POLARSSL_ERR_X509_CERT_INVALID_VERSION | |
| 192 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 193 | |
| 194 | return( 0 ); |
| 195 | } |
| 196 | |
| 197 | /* |
| 198 | * CertificateSerialNumber ::= INTEGER |
| 199 | */ |
| 200 | static int x509_get_serial( unsigned char **p, |
| 201 | unsigned char *end, |
| 202 | x509_buf *serial ) |
| 203 | { |
| 204 | int ret; |
| 205 | |
| 206 | if( ( end - *p ) < 1 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 207 | return( POLARSSL_ERR_X509_CERT_INVALID_SERIAL | |
| 208 | POLARSSL_ERR_ASN1_OUT_OF_DATA ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 209 | |
| 210 | if( **p != ( ASN1_CONTEXT_SPECIFIC | ASN1_PRIMITIVE | 2 ) && |
| 211 | **p != ASN1_INTEGER ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 212 | return( POLARSSL_ERR_X509_CERT_INVALID_SERIAL | |
| 213 | POLARSSL_ERR_ASN1_UNEXPECTED_TAG ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 214 | |
| 215 | serial->tag = *(*p)++; |
| 216 | |
| 217 | if( ( ret = asn1_get_len( p, end, &serial->len ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 218 | return( POLARSSL_ERR_X509_CERT_INVALID_SERIAL | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 219 | |
| 220 | serial->p = *p; |
| 221 | *p += serial->len; |
| 222 | |
| 223 | return( 0 ); |
| 224 | } |
| 225 | |
| 226 | /* |
| 227 | * AlgorithmIdentifier ::= SEQUENCE { |
| 228 | * algorithm OBJECT IDENTIFIER, |
| 229 | * parameters ANY DEFINED BY algorithm OPTIONAL } |
| 230 | */ |
| 231 | static int x509_get_alg( unsigned char **p, |
| 232 | unsigned char *end, |
| 233 | x509_buf *alg ) |
| 234 | { |
| 235 | int ret, len; |
| 236 | |
| 237 | if( ( ret = asn1_get_tag( p, end, &len, |
| 238 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 239 | return( POLARSSL_ERR_X509_CERT_INVALID_ALG | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 240 | |
| 241 | end = *p + len; |
| 242 | alg->tag = **p; |
| 243 | |
| 244 | if( ( ret = asn1_get_tag( p, end, &alg->len, ASN1_OID ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 245 | return( POLARSSL_ERR_X509_CERT_INVALID_ALG | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 246 | |
| 247 | alg->p = *p; |
| 248 | *p += alg->len; |
| 249 | |
| 250 | if( *p == end ) |
| 251 | return( 0 ); |
| 252 | |
| 253 | /* |
| 254 | * assume the algorithm parameters must be NULL |
| 255 | */ |
| 256 | if( ( ret = asn1_get_tag( p, end, &len, ASN1_NULL ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 257 | return( POLARSSL_ERR_X509_CERT_INVALID_ALG | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 258 | |
| 259 | if( *p != end ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 260 | return( POLARSSL_ERR_X509_CERT_INVALID_ALG | |
| 261 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 262 | |
| 263 | return( 0 ); |
| 264 | } |
| 265 | |
| 266 | /* |
| 267 | * RelativeDistinguishedName ::= |
| 268 | * SET OF AttributeTypeAndValue |
| 269 | * |
| 270 | * AttributeTypeAndValue ::= SEQUENCE { |
| 271 | * type AttributeType, |
| 272 | * value AttributeValue } |
| 273 | * |
| 274 | * AttributeType ::= OBJECT IDENTIFIER |
| 275 | * |
| 276 | * AttributeValue ::= ANY DEFINED BY AttributeType |
| 277 | */ |
| 278 | static int x509_get_name( unsigned char **p, |
| 279 | unsigned char *end, |
| 280 | x509_name *cur ) |
| 281 | { |
| 282 | int ret, len; |
| 283 | unsigned char *end2; |
| 284 | x509_buf *oid; |
| 285 | x509_buf *val; |
| 286 | |
| 287 | if( ( ret = asn1_get_tag( p, end, &len, |
| 288 | ASN1_CONSTRUCTED | ASN1_SET ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 289 | return( POLARSSL_ERR_X509_CERT_INVALID_NAME | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 290 | |
| 291 | end2 = end; |
| 292 | end = *p + len; |
| 293 | |
| 294 | if( ( ret = asn1_get_tag( p, end, &len, |
| 295 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 296 | return( POLARSSL_ERR_X509_CERT_INVALID_NAME | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 297 | |
| 298 | if( *p + len != end ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 299 | return( POLARSSL_ERR_X509_CERT_INVALID_NAME | |
| 300 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 301 | |
| 302 | oid = &cur->oid; |
| 303 | oid->tag = **p; |
| 304 | |
| 305 | if( ( ret = asn1_get_tag( p, end, &oid->len, ASN1_OID ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 306 | return( POLARSSL_ERR_X509_CERT_INVALID_NAME | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 307 | |
| 308 | oid->p = *p; |
| 309 | *p += oid->len; |
| 310 | |
| 311 | if( ( end - *p ) < 1 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 312 | return( POLARSSL_ERR_X509_CERT_INVALID_NAME | |
| 313 | POLARSSL_ERR_ASN1_OUT_OF_DATA ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 314 | |
| 315 | if( **p != ASN1_BMP_STRING && **p != ASN1_UTF8_STRING && |
| 316 | **p != ASN1_T61_STRING && **p != ASN1_PRINTABLE_STRING && |
| 317 | **p != ASN1_IA5_STRING && **p != ASN1_UNIVERSAL_STRING ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 318 | return( POLARSSL_ERR_X509_CERT_INVALID_NAME | |
| 319 | POLARSSL_ERR_ASN1_UNEXPECTED_TAG ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 320 | |
| 321 | val = &cur->val; |
| 322 | val->tag = *(*p)++; |
| 323 | |
| 324 | if( ( ret = asn1_get_len( p, end, &val->len ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 325 | return( POLARSSL_ERR_X509_CERT_INVALID_NAME | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 326 | |
| 327 | val->p = *p; |
| 328 | *p += val->len; |
| 329 | |
| 330 | cur->next = NULL; |
| 331 | |
| 332 | if( *p != end ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 333 | return( POLARSSL_ERR_X509_CERT_INVALID_NAME | |
| 334 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 335 | |
| 336 | /* |
| 337 | * recurse until end of SEQUENCE is reached |
| 338 | */ |
| 339 | if( *p == end2 ) |
| 340 | return( 0 ); |
| 341 | |
| 342 | cur->next = (x509_name *) malloc( |
| 343 | sizeof( x509_name ) ); |
| 344 | |
| 345 | if( cur->next == NULL ) |
| 346 | return( 1 ); |
| 347 | |
| 348 | return( x509_get_name( p, end2, cur->next ) ); |
| 349 | } |
| 350 | |
| 351 | /* |
| 352 | * Validity ::= SEQUENCE { |
| 353 | * notBefore Time, |
| 354 | * notAfter Time } |
| 355 | * |
| 356 | * Time ::= CHOICE { |
| 357 | * utcTime UTCTime, |
| 358 | * generalTime GeneralizedTime } |
| 359 | */ |
| 360 | static int x509_get_dates( unsigned char **p, |
| 361 | unsigned char *end, |
| 362 | x509_time *from, |
| 363 | x509_time *to ) |
| 364 | { |
| 365 | int ret, len; |
| 366 | char date[64]; |
| 367 | |
| 368 | if( ( ret = asn1_get_tag( p, end, &len, |
| 369 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 370 | return( POLARSSL_ERR_X509_CERT_INVALID_DATE | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 371 | |
| 372 | end = *p + len; |
| 373 | |
| 374 | /* |
| 375 | * TODO: also handle GeneralizedTime |
| 376 | */ |
| 377 | if( ( ret = asn1_get_tag( p, end, &len, ASN1_UTC_TIME ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 378 | return( POLARSSL_ERR_X509_CERT_INVALID_DATE | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 379 | |
| 380 | memset( date, 0, sizeof( date ) ); |
| 381 | memcpy( date, *p, ( len < (int) sizeof( date ) - 1 ) ? |
| 382 | len : (int) sizeof( date ) - 1 ); |
| 383 | |
| 384 | if( sscanf( date, "%2d%2d%2d%2d%2d%2d", |
| 385 | &from->year, &from->mon, &from->day, |
| 386 | &from->hour, &from->min, &from->sec ) < 5 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 387 | return( POLARSSL_ERR_X509_CERT_INVALID_DATE ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 388 | |
| 389 | from->year += 100 * ( from->year < 90 ); |
| 390 | from->year += 1900; |
| 391 | |
| 392 | *p += len; |
| 393 | |
| 394 | if( ( ret = asn1_get_tag( p, end, &len, ASN1_UTC_TIME ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 395 | return( POLARSSL_ERR_X509_CERT_INVALID_DATE | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 396 | |
| 397 | memset( date, 0, sizeof( date ) ); |
| 398 | memcpy( date, *p, ( len < (int) sizeof( date ) - 1 ) ? |
| 399 | len : (int) sizeof( date ) - 1 ); |
| 400 | |
| 401 | if( sscanf( date, "%2d%2d%2d%2d%2d%2d", |
| 402 | &to->year, &to->mon, &to->day, |
| 403 | &to->hour, &to->min, &to->sec ) < 5 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 404 | return( POLARSSL_ERR_X509_CERT_INVALID_DATE ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 405 | |
| 406 | to->year += 100 * ( to->year < 90 ); |
| 407 | to->year += 1900; |
| 408 | |
| 409 | *p += len; |
| 410 | |
| 411 | if( *p != end ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 412 | return( POLARSSL_ERR_X509_CERT_INVALID_DATE | |
| 413 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 414 | |
| 415 | return( 0 ); |
| 416 | } |
| 417 | |
| 418 | /* |
| 419 | * SubjectPublicKeyInfo ::= SEQUENCE { |
| 420 | * algorithm AlgorithmIdentifier, |
| 421 | * subjectPublicKey BIT STRING } |
| 422 | */ |
| 423 | static int x509_get_pubkey( unsigned char **p, |
| 424 | unsigned char *end, |
| 425 | x509_buf *pk_alg_oid, |
| 426 | mpi *N, mpi *E ) |
| 427 | { |
| 428 | int ret, len; |
| 429 | unsigned char *end2; |
| 430 | |
| 431 | if( ( ret = x509_get_alg( p, end, pk_alg_oid ) ) != 0 ) |
| 432 | return( ret ); |
| 433 | |
| 434 | /* |
| 435 | * only RSA public keys handled at this time |
| 436 | */ |
| 437 | if( pk_alg_oid->len != 9 || |
| 438 | memcmp( pk_alg_oid->p, OID_PKCS1_RSA, 9 ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 439 | return( POLARSSL_ERR_X509_CERT_UNKNOWN_PK_ALG ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 440 | |
| 441 | if( ( ret = asn1_get_tag( p, end, &len, ASN1_BIT_STRING ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 442 | return( POLARSSL_ERR_X509_CERT_INVALID_PUBKEY | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 443 | |
| 444 | if( ( end - *p ) < 1 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 445 | return( POLARSSL_ERR_X509_CERT_INVALID_PUBKEY | |
| 446 | POLARSSL_ERR_ASN1_OUT_OF_DATA ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 447 | |
| 448 | end2 = *p + len; |
| 449 | |
| 450 | if( *(*p)++ != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 451 | return( POLARSSL_ERR_X509_CERT_INVALID_PUBKEY ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 452 | |
| 453 | /* |
| 454 | * RSAPublicKey ::= SEQUENCE { |
| 455 | * modulus INTEGER, -- n |
| 456 | * publicExponent INTEGER -- e |
| 457 | * } |
| 458 | */ |
| 459 | if( ( ret = asn1_get_tag( p, end2, &len, |
| 460 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 461 | return( POLARSSL_ERR_X509_CERT_INVALID_PUBKEY | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 462 | |
| 463 | if( *p + len != end2 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 464 | return( POLARSSL_ERR_X509_CERT_INVALID_PUBKEY | |
| 465 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 466 | |
| 467 | if( ( ret = asn1_get_mpi( p, end2, N ) ) != 0 || |
| 468 | ( ret = asn1_get_mpi( p, end2, E ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 469 | return( POLARSSL_ERR_X509_CERT_INVALID_PUBKEY | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 470 | |
| 471 | if( *p != end ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 472 | return( POLARSSL_ERR_X509_CERT_INVALID_PUBKEY | |
| 473 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 474 | |
| 475 | return( 0 ); |
| 476 | } |
| 477 | |
| 478 | static int x509_get_sig( unsigned char **p, |
| 479 | unsigned char *end, |
| 480 | x509_buf *sig ) |
| 481 | { |
| 482 | int ret, len; |
| 483 | |
| 484 | sig->tag = **p; |
| 485 | |
| 486 | if( ( ret = asn1_get_tag( p, end, &len, ASN1_BIT_STRING ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 487 | return( POLARSSL_ERR_X509_CERT_INVALID_SIGNATURE | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 488 | |
| 489 | if( --len < 1 || *(*p)++ != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 490 | return( POLARSSL_ERR_X509_CERT_INVALID_SIGNATURE ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 491 | |
| 492 | sig->len = len; |
| 493 | sig->p = *p; |
| 494 | |
| 495 | *p += len; |
| 496 | |
| 497 | return( 0 ); |
| 498 | } |
| 499 | |
| 500 | /* |
| 501 | * X.509 v2/v3 unique identifier (not parsed) |
| 502 | */ |
| 503 | static int x509_get_uid( unsigned char **p, |
| 504 | unsigned char *end, |
| 505 | x509_buf *uid, int n ) |
| 506 | { |
| 507 | int ret; |
| 508 | |
| 509 | if( *p == end ) |
| 510 | return( 0 ); |
| 511 | |
| 512 | uid->tag = **p; |
| 513 | |
| 514 | if( ( ret = asn1_get_tag( p, end, &uid->len, |
| 515 | ASN1_CONTEXT_SPECIFIC | ASN1_CONSTRUCTED | n ) ) != 0 ) |
| 516 | { |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 517 | if( ret == POLARSSL_ERR_ASN1_UNEXPECTED_TAG ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 518 | return( 0 ); |
| 519 | |
| 520 | return( ret ); |
| 521 | } |
| 522 | |
| 523 | uid->p = *p; |
| 524 | *p += uid->len; |
| 525 | |
| 526 | return( 0 ); |
| 527 | } |
| 528 | |
| 529 | /* |
| 530 | * X.509 v3 extensions (only BasicConstraints are parsed) |
| 531 | */ |
| 532 | static int x509_get_ext( unsigned char **p, |
| 533 | unsigned char *end, |
| 534 | x509_buf *ext, |
| 535 | int *ca_istrue, |
| 536 | int *max_pathlen ) |
| 537 | { |
| 538 | int ret, len; |
| 539 | int is_critical = 1; |
| 540 | int is_cacert = 0; |
| 541 | unsigned char *end2; |
| 542 | |
| 543 | if( *p == end ) |
| 544 | return( 0 ); |
| 545 | |
| 546 | ext->tag = **p; |
| 547 | |
| 548 | if( ( ret = asn1_get_tag( p, end, &ext->len, |
| 549 | ASN1_CONTEXT_SPECIFIC | ASN1_CONSTRUCTED | 3 ) ) != 0 ) |
| 550 | { |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 551 | if( ret == POLARSSL_ERR_ASN1_UNEXPECTED_TAG ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 552 | return( 0 ); |
| 553 | |
| 554 | return( ret ); |
| 555 | } |
| 556 | |
| 557 | ext->p = *p; |
| 558 | end = *p + ext->len; |
| 559 | |
| 560 | /* |
| 561 | * Extensions ::= SEQUENCE SIZE (1..MAX) OF Extension |
| 562 | * |
| 563 | * Extension ::= SEQUENCE { |
| 564 | * extnID OBJECT IDENTIFIER, |
| 565 | * critical BOOLEAN DEFAULT FALSE, |
| 566 | * extnValue OCTET STRING } |
| 567 | */ |
| 568 | if( ( ret = asn1_get_tag( p, end, &len, |
| 569 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 570 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 571 | |
| 572 | if( end != *p + len ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 573 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS | |
| 574 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 575 | |
| 576 | while( *p < end ) |
| 577 | { |
| 578 | if( ( ret = asn1_get_tag( p, end, &len, |
| 579 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 580 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 581 | |
| 582 | if( memcmp( *p, "\x06\x03\x55\x1D\x13", 5 ) != 0 ) |
| 583 | { |
| 584 | *p += len; |
| 585 | continue; |
| 586 | } |
| 587 | |
| 588 | *p += 5; |
| 589 | |
| 590 | if( ( ret = asn1_get_bool( p, end, &is_critical ) ) != 0 && |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 591 | ( ret != POLARSSL_ERR_ASN1_UNEXPECTED_TAG ) ) |
| 592 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 593 | |
| 594 | if( ( ret = asn1_get_tag( p, end, &len, |
| 595 | ASN1_OCTET_STRING ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 596 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 597 | |
| 598 | /* |
| 599 | * BasicConstraints ::= SEQUENCE { |
| 600 | * cA BOOLEAN DEFAULT FALSE, |
| 601 | * pathLenConstraint INTEGER (0..MAX) OPTIONAL } |
| 602 | */ |
| 603 | end2 = *p + len; |
| 604 | |
| 605 | if( ( ret = asn1_get_tag( p, end2, &len, |
| 606 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 607 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 608 | |
| 609 | if( *p == end2 ) |
| 610 | continue; |
| 611 | |
| 612 | if( ( ret = asn1_get_bool( p, end2, &is_cacert ) ) != 0 ) |
| 613 | { |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 614 | if( ret == POLARSSL_ERR_ASN1_UNEXPECTED_TAG ) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 615 | ret = asn1_get_int( p, end2, &is_cacert ); |
| 616 | |
| 617 | if( ret != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 618 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 619 | |
| 620 | if( is_cacert != 0 ) |
| 621 | is_cacert = 1; |
| 622 | } |
| 623 | |
| 624 | if( *p == end2 ) |
| 625 | continue; |
| 626 | |
| 627 | if( ( ret = asn1_get_int( p, end2, max_pathlen ) ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 628 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 629 | |
| 630 | if( *p != end2 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 631 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS | |
| 632 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 633 | |
| 634 | max_pathlen++; |
| 635 | } |
| 636 | |
| 637 | if( *p != end ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 638 | return( POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS | |
| 639 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 640 | |
| 641 | *ca_istrue = is_critical & is_cacert; |
| 642 | |
| 643 | return( 0 ); |
| 644 | } |
| 645 | |
| 646 | /* |
| 647 | * Parse one or more certificates and add them to the chained list |
| 648 | */ |
| 649 | int x509parse_crt( x509_cert *chain, unsigned char *buf, int buflen ) |
| 650 | { |
| 651 | int ret, len; |
| 652 | unsigned char *s1, *s2; |
| 653 | unsigned char *p, *end; |
| 654 | x509_cert *crt; |
| 655 | |
| 656 | crt = chain; |
| 657 | |
| 658 | while( crt->version != 0 ) |
| 659 | crt = crt->next; |
| 660 | |
| 661 | /* |
| 662 | * check if the certificate is encoded in base64 |
| 663 | */ |
| 664 | s1 = (unsigned char *) strstr( (char *) buf, |
| 665 | "-----BEGIN CERTIFICATE-----" ); |
| 666 | |
| 667 | if( s1 != NULL ) |
| 668 | { |
| 669 | s2 = (unsigned char *) strstr( (char *) buf, |
| 670 | "-----END CERTIFICATE-----" ); |
| 671 | |
| 672 | if( s2 == NULL || s2 <= s1 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 673 | return( POLARSSL_ERR_X509_CERT_INVALID_PEM ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 674 | |
| 675 | s1 += 27; |
| 676 | if( *s1 == '\r' ) s1++; |
| 677 | if( *s1 == '\n' ) s1++; |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 678 | else return( POLARSSL_ERR_X509_CERT_INVALID_PEM ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 679 | |
| 680 | /* |
| 681 | * get the DER data length and decode the buffer |
| 682 | */ |
| 683 | len = 0; |
| 684 | ret = base64_decode( NULL, &len, s1, s2 - s1 ); |
| 685 | |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 686 | if( ret == POLARSSL_ERR_BASE64_INVALID_CHARACTER ) |
| 687 | return( POLARSSL_ERR_X509_CERT_INVALID_PEM | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 688 | |
| 689 | if( ( p = (unsigned char *) malloc( len ) ) == NULL ) |
| 690 | return( 1 ); |
| 691 | |
| 692 | if( ( ret = base64_decode( p, &len, s1, s2 - s1 ) ) != 0 ) |
| 693 | { |
| 694 | free( p ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 695 | return( POLARSSL_ERR_X509_CERT_INVALID_PEM | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 696 | } |
| 697 | |
| 698 | /* |
| 699 | * update the buffer size and offset |
| 700 | */ |
| 701 | s2 += 25; |
| 702 | if( *s2 == '\r' ) s2++; |
| 703 | if( *s2 == '\n' ) s2++; |
| 704 | else |
| 705 | { |
| 706 | free( p ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 707 | return( POLARSSL_ERR_X509_CERT_INVALID_PEM ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 708 | } |
| 709 | |
| 710 | buflen -= s2 - buf; |
| 711 | buf = s2; |
| 712 | } |
| 713 | else |
| 714 | { |
| 715 | /* |
| 716 | * nope, copy the raw DER data |
| 717 | */ |
| 718 | p = (unsigned char *) malloc( len = buflen ); |
| 719 | |
| 720 | if( p == NULL ) |
| 721 | return( 1 ); |
| 722 | |
| 723 | memcpy( p, buf, buflen ); |
| 724 | |
| 725 | buflen = 0; |
| 726 | } |
| 727 | |
| 728 | crt->raw.p = p; |
| 729 | crt->raw.len = len; |
| 730 | end = p + len; |
| 731 | |
| 732 | /* |
| 733 | * Certificate ::= SEQUENCE { |
| 734 | * tbsCertificate TBSCertificate, |
| 735 | * signatureAlgorithm AlgorithmIdentifier, |
| 736 | * signatureValue BIT STRING } |
| 737 | */ |
| 738 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 739 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 740 | { |
| 741 | x509_free( crt ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 742 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 743 | } |
| 744 | |
| 745 | if( len != (int) ( end - p ) ) |
| 746 | { |
| 747 | x509_free( crt ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 748 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT | |
| 749 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 750 | } |
| 751 | |
| 752 | /* |
| 753 | * TBSCertificate ::= SEQUENCE { |
| 754 | */ |
| 755 | crt->tbs.p = p; |
| 756 | |
| 757 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 758 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 759 | { |
| 760 | x509_free( crt ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 761 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 762 | } |
| 763 | |
| 764 | end = p + len; |
| 765 | crt->tbs.len = end - crt->tbs.p; |
| 766 | |
| 767 | /* |
| 768 | * Version ::= INTEGER { v1(0), v2(1), v3(2) } |
| 769 | * |
| 770 | * CertificateSerialNumber ::= INTEGER |
| 771 | * |
| 772 | * signature AlgorithmIdentifier |
| 773 | */ |
| 774 | if( ( ret = x509_get_version( &p, end, &crt->version ) ) != 0 || |
| 775 | ( ret = x509_get_serial( &p, end, &crt->serial ) ) != 0 || |
| 776 | ( ret = x509_get_alg( &p, end, &crt->sig_oid1 ) ) != 0 ) |
| 777 | { |
| 778 | x509_free( crt ); |
| 779 | return( ret ); |
| 780 | } |
| 781 | |
| 782 | crt->version++; |
| 783 | |
| 784 | if( crt->version > 3 ) |
| 785 | { |
| 786 | x509_free( crt ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 787 | return( POLARSSL_ERR_X509_CERT_UNKNOWN_VERSION ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 788 | } |
| 789 | |
| 790 | if( crt->sig_oid1.len != 9 || |
| 791 | memcmp( crt->sig_oid1.p, OID_PKCS1, 8 ) != 0 ) |
| 792 | { |
| 793 | x509_free( crt ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 794 | return( POLARSSL_ERR_X509_CERT_UNKNOWN_SIG_ALG ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 795 | } |
| 796 | |
| 797 | if( crt->sig_oid1.p[8] < 2 || |
| 798 | crt->sig_oid1.p[8] > 5 ) |
| 799 | { |
| 800 | x509_free( crt ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 801 | return( POLARSSL_ERR_X509_CERT_UNKNOWN_SIG_ALG ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 802 | } |
| 803 | |
| 804 | /* |
| 805 | * issuer Name |
| 806 | */ |
| 807 | crt->issuer_raw.p = p; |
| 808 | |
| 809 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 810 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 811 | { |
| 812 | x509_free( crt ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 813 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 814 | } |
| 815 | |
| 816 | if( ( ret = x509_get_name( &p, p + len, &crt->issuer ) ) != 0 ) |
| 817 | { |
| 818 | x509_free( crt ); |
| 819 | return( ret ); |
| 820 | } |
| 821 | |
| 822 | crt->issuer_raw.len = p - crt->issuer_raw.p; |
| 823 | |
| 824 | /* |
| 825 | * Validity ::= SEQUENCE { |
| 826 | * notBefore Time, |
| 827 | * notAfter Time } |
| 828 | * |
| 829 | */ |
| 830 | if( ( ret = x509_get_dates( &p, end, &crt->valid_from, |
| 831 | &crt->valid_to ) ) != 0 ) |
| 832 | { |
| 833 | x509_free( crt ); |
| 834 | return( ret ); |
| 835 | } |
| 836 | |
| 837 | /* |
| 838 | * subject Name |
| 839 | */ |
| 840 | crt->subject_raw.p = p; |
| 841 | |
| 842 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 843 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 844 | { |
| 845 | x509_free( crt ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 846 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 847 | } |
| 848 | |
| 849 | if( ( ret = x509_get_name( &p, p + len, &crt->subject ) ) != 0 ) |
| 850 | { |
| 851 | x509_free( crt ); |
| 852 | return( ret ); |
| 853 | } |
| 854 | |
| 855 | crt->subject_raw.len = p - crt->subject_raw.p; |
| 856 | |
| 857 | /* |
| 858 | * SubjectPublicKeyInfo ::= SEQUENCE |
| 859 | * algorithm AlgorithmIdentifier, |
| 860 | * subjectPublicKey BIT STRING } |
| 861 | */ |
| 862 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 863 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 864 | { |
| 865 | x509_free( crt ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 866 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 867 | } |
| 868 | |
| 869 | if( ( ret = x509_get_pubkey( &p, p + len, &crt->pk_oid, |
| 870 | &crt->rsa.N, &crt->rsa.E ) ) != 0 ) |
| 871 | { |
| 872 | x509_free( crt ); |
| 873 | return( ret ); |
| 874 | } |
| 875 | |
| 876 | if( ( ret = rsa_check_pubkey( &crt->rsa ) ) != 0 ) |
| 877 | { |
| 878 | x509_free( crt ); |
| 879 | return( ret ); |
| 880 | } |
| 881 | |
| 882 | crt->rsa.len = mpi_size( &crt->rsa.N ); |
| 883 | |
| 884 | /* |
| 885 | * issuerUniqueID [1] IMPLICIT UniqueIdentifier OPTIONAL, |
| 886 | * -- If present, version shall be v2 or v3 |
| 887 | * subjectUniqueID [2] IMPLICIT UniqueIdentifier OPTIONAL, |
| 888 | * -- If present, version shall be v2 or v3 |
| 889 | * extensions [3] EXPLICIT Extensions OPTIONAL |
| 890 | * -- If present, version shall be v3 |
| 891 | */ |
| 892 | if( crt->version == 2 || crt->version == 3 ) |
| 893 | { |
| 894 | ret = x509_get_uid( &p, end, &crt->issuer_id, 1 ); |
| 895 | if( ret != 0 ) |
| 896 | { |
| 897 | x509_free( crt ); |
| 898 | return( ret ); |
| 899 | } |
| 900 | } |
| 901 | |
| 902 | if( crt->version == 2 || crt->version == 3 ) |
| 903 | { |
| 904 | ret = x509_get_uid( &p, end, &crt->subject_id, 2 ); |
| 905 | if( ret != 0 ) |
| 906 | { |
| 907 | x509_free( crt ); |
| 908 | return( ret ); |
| 909 | } |
| 910 | } |
| 911 | |
| 912 | if( crt->version == 3 ) |
| 913 | { |
| 914 | ret = x509_get_ext( &p, end, &crt->v3_ext, |
| 915 | &crt->ca_istrue, &crt->max_pathlen ); |
| 916 | if( ret != 0 ) |
| 917 | { |
| 918 | x509_free( crt ); |
| 919 | return( ret ); |
| 920 | } |
| 921 | } |
| 922 | |
| 923 | if( p != end ) |
| 924 | { |
| 925 | x509_free( crt ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 926 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT | |
| 927 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 928 | } |
| 929 | |
| 930 | end = crt->raw.p + crt->raw.len; |
| 931 | |
| 932 | /* |
| 933 | * signatureAlgorithm AlgorithmIdentifier, |
| 934 | * signatureValue BIT STRING |
| 935 | */ |
| 936 | if( ( ret = x509_get_alg( &p, end, &crt->sig_oid2 ) ) != 0 ) |
| 937 | { |
| 938 | x509_free( crt ); |
| 939 | return( ret ); |
| 940 | } |
| 941 | |
| 942 | if( memcmp( crt->sig_oid1.p, crt->sig_oid2.p, 9 ) != 0 ) |
| 943 | { |
| 944 | x509_free( crt ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 945 | return( POLARSSL_ERR_X509_CERT_SIG_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 946 | } |
| 947 | |
| 948 | if( ( ret = x509_get_sig( &p, end, &crt->sig ) ) != 0 ) |
| 949 | { |
| 950 | x509_free( crt ); |
| 951 | return( ret ); |
| 952 | } |
| 953 | |
| 954 | if( p != end ) |
| 955 | { |
| 956 | x509_free( crt ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 957 | return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT | |
| 958 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 959 | } |
| 960 | |
| 961 | crt->next = (x509_cert *) malloc( sizeof( x509_cert ) ); |
| 962 | |
| 963 | if( crt->next == NULL ) |
| 964 | { |
| 965 | x509_free( crt ); |
| 966 | return( 1 ); |
| 967 | } |
| 968 | |
| 969 | crt = crt->next; |
| 970 | memset( crt, 0, sizeof( x509_cert ) ); |
| 971 | |
| 972 | if( buflen > 0 ) |
| 973 | return( x509parse_crt( crt, buf, buflen ) ); |
| 974 | |
| 975 | return( 0 ); |
| 976 | } |
| 977 | |
| 978 | /* |
| 979 | * Load one or more certificates and add them to the chained list |
| 980 | */ |
| 981 | int x509parse_crtfile( x509_cert *chain, char *path ) |
| 982 | { |
| 983 | int ret; |
| 984 | FILE *f; |
| 985 | size_t n; |
| 986 | unsigned char *buf; |
| 987 | |
| 988 | if( ( f = fopen( path, "rb" ) ) == NULL ) |
| 989 | return( 1 ); |
| 990 | |
| 991 | fseek( f, 0, SEEK_END ); |
| 992 | n = (size_t) ftell( f ); |
| 993 | fseek( f, 0, SEEK_SET ); |
| 994 | |
| 995 | if( ( buf = (unsigned char *) malloc( n + 1 ) ) == NULL ) |
| 996 | return( 1 ); |
| 997 | |
| 998 | if( fread( buf, 1, n, f ) != n ) |
| 999 | { |
| 1000 | fclose( f ); |
| 1001 | free( buf ); |
| 1002 | return( 1 ); |
| 1003 | } |
| 1004 | |
| 1005 | buf[n] = '\0'; |
| 1006 | |
| 1007 | ret = x509parse_crt( chain, buf, (int) n ); |
| 1008 | |
| 1009 | memset( buf, 0, n + 1 ); |
| 1010 | free( buf ); |
| 1011 | fclose( f ); |
| 1012 | |
| 1013 | return( ret ); |
| 1014 | } |
| 1015 | |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1016 | #if defined(POLARSSL_DES_C) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1017 | /* |
| 1018 | * Read a 16-byte hex string and convert it to binary |
| 1019 | */ |
| 1020 | static int x509_get_iv( unsigned char *s, unsigned char iv[8] ) |
| 1021 | { |
| 1022 | int i, j, k; |
| 1023 | |
| 1024 | memset( iv, 0, 8 ); |
| 1025 | |
| 1026 | for( i = 0; i < 16; i++, s++ ) |
| 1027 | { |
| 1028 | if( *s >= '0' && *s <= '9' ) j = *s - '0'; else |
| 1029 | if( *s >= 'A' && *s <= 'F' ) j = *s - '7'; else |
| 1030 | if( *s >= 'a' && *s <= 'f' ) j = *s - 'W'; else |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1031 | return( POLARSSL_ERR_X509_KEY_INVALID_ENC_IV ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1032 | |
| 1033 | k = ( ( i & 1 ) != 0 ) ? j : j << 4; |
| 1034 | |
| 1035 | iv[i >> 1] = (unsigned char)( iv[i >> 1] | k ); |
| 1036 | } |
| 1037 | |
| 1038 | return( 0 ); |
| 1039 | } |
| 1040 | |
| 1041 | /* |
| 1042 | * Decrypt with 3DES-CBC, using PBKDF1 for key derivation |
| 1043 | */ |
| 1044 | static void x509_des3_decrypt( unsigned char des3_iv[8], |
| 1045 | unsigned char *buf, int buflen, |
| 1046 | unsigned char *pwd, int pwdlen ) |
| 1047 | { |
| 1048 | md5_context md5_ctx; |
| 1049 | des3_context des3_ctx; |
| 1050 | unsigned char md5sum[16]; |
| 1051 | unsigned char des3_key[24]; |
| 1052 | |
| 1053 | /* |
| 1054 | * 3DES key[ 0..15] = MD5(pwd || IV) |
| 1055 | * key[16..23] = MD5(pwd || IV || 3DES key[ 0..15]) |
| 1056 | */ |
| 1057 | md5_starts( &md5_ctx ); |
| 1058 | md5_update( &md5_ctx, pwd, pwdlen ); |
| 1059 | md5_update( &md5_ctx, des3_iv, 8 ); |
| 1060 | md5_finish( &md5_ctx, md5sum ); |
| 1061 | memcpy( des3_key, md5sum, 16 ); |
| 1062 | |
| 1063 | md5_starts( &md5_ctx ); |
| 1064 | md5_update( &md5_ctx, md5sum, 16 ); |
| 1065 | md5_update( &md5_ctx, pwd, pwdlen ); |
| 1066 | md5_update( &md5_ctx, des3_iv, 8 ); |
| 1067 | md5_finish( &md5_ctx, md5sum ); |
| 1068 | memcpy( des3_key + 16, md5sum, 8 ); |
| 1069 | |
| 1070 | des3_set3key_dec( &des3_ctx, des3_key ); |
| 1071 | des3_crypt_cbc( &des3_ctx, DES_DECRYPT, buflen, |
| 1072 | des3_iv, buf, buf ); |
| 1073 | |
| 1074 | memset( &md5_ctx, 0, sizeof( md5_ctx ) ); |
| 1075 | memset( &des3_ctx, 0, sizeof( des3_ctx ) ); |
| 1076 | memset( md5sum, 0, 16 ); |
| 1077 | memset( des3_key, 0, 24 ); |
| 1078 | } |
| 1079 | #endif |
| 1080 | |
| 1081 | /* |
| 1082 | * Parse a private RSA key |
| 1083 | */ |
| 1084 | int x509parse_key( rsa_context *rsa, unsigned char *buf, int buflen, |
| 1085 | unsigned char *pwd, int pwdlen ) |
| 1086 | { |
| 1087 | int ret, len, enc; |
| 1088 | unsigned char *s1, *s2; |
| 1089 | unsigned char *p, *end; |
| 1090 | unsigned char des3_iv[8]; |
| 1091 | |
| 1092 | s1 = (unsigned char *) strstr( (char *) buf, |
| 1093 | "-----BEGIN RSA PRIVATE KEY-----" ); |
| 1094 | |
| 1095 | if( s1 != NULL ) |
| 1096 | { |
| 1097 | s2 = (unsigned char *) strstr( (char *) buf, |
| 1098 | "-----END RSA PRIVATE KEY-----" ); |
| 1099 | |
| 1100 | if( s2 == NULL || s2 <= s1 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1101 | return( POLARSSL_ERR_X509_KEY_INVALID_PEM ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1102 | |
| 1103 | s1 += 31; |
| 1104 | if( *s1 == '\r' ) s1++; |
| 1105 | if( *s1 == '\n' ) s1++; |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1106 | else return( POLARSSL_ERR_X509_KEY_INVALID_PEM ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1107 | |
| 1108 | enc = 0; |
| 1109 | |
| 1110 | if( memcmp( s1, "Proc-Type: 4,ENCRYPTED", 22 ) == 0 ) |
| 1111 | { |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1112 | #if defined(POLARSSL_DES_C) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1113 | enc++; |
| 1114 | |
| 1115 | s1 += 22; |
| 1116 | if( *s1 == '\r' ) s1++; |
| 1117 | if( *s1 == '\n' ) s1++; |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1118 | else return( POLARSSL_ERR_X509_KEY_INVALID_PEM ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1119 | |
| 1120 | if( memcmp( s1, "DEK-Info: DES-EDE3-CBC,", 23 ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1121 | return( POLARSSL_ERR_X509_KEY_UNKNOWN_ENC_ALG ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1122 | |
| 1123 | s1 += 23; |
| 1124 | if( x509_get_iv( s1, des3_iv ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1125 | return( POLARSSL_ERR_X509_KEY_INVALID_ENC_IV ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1126 | |
| 1127 | s1 += 16; |
| 1128 | if( *s1 == '\r' ) s1++; |
| 1129 | if( *s1 == '\n' ) s1++; |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1130 | else return( POLARSSL_ERR_X509_KEY_INVALID_PEM ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1131 | #else |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1132 | return( POLARSSL_ERR_X509_FEATURE_UNAVAILABLE ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1133 | #endif |
| 1134 | } |
| 1135 | |
| 1136 | len = 0; |
| 1137 | ret = base64_decode( NULL, &len, s1, s2 - s1 ); |
| 1138 | |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1139 | if( ret == POLARSSL_ERR_BASE64_INVALID_CHARACTER ) |
| 1140 | return( ret | POLARSSL_ERR_X509_KEY_INVALID_PEM ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1141 | |
| 1142 | if( ( buf = (unsigned char *) malloc( len ) ) == NULL ) |
| 1143 | return( 1 ); |
| 1144 | |
| 1145 | if( ( ret = base64_decode( buf, &len, s1, s2 - s1 ) ) != 0 ) |
| 1146 | { |
| 1147 | free( buf ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1148 | return( ret | POLARSSL_ERR_X509_KEY_INVALID_PEM ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1149 | } |
| 1150 | |
| 1151 | buflen = len; |
| 1152 | |
| 1153 | if( enc != 0 ) |
| 1154 | { |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1155 | #if defined(POLARSSL_DES_C) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1156 | if( pwd == NULL ) |
| 1157 | { |
| 1158 | free( buf ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1159 | return( POLARSSL_ERR_X509_KEY_PASSWORD_REQUIRED ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1160 | } |
| 1161 | |
| 1162 | x509_des3_decrypt( des3_iv, buf, buflen, pwd, pwdlen ); |
| 1163 | |
| 1164 | if( buf[0] != 0x30 || buf[1] != 0x82 || |
| 1165 | buf[4] != 0x02 || buf[5] != 0x01 ) |
| 1166 | { |
| 1167 | free( buf ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1168 | return( POLARSSL_ERR_X509_KEY_PASSWORD_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1169 | } |
| 1170 | #else |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1171 | return( POLARSSL_ERR_X509_FEATURE_UNAVAILABLE ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1172 | #endif |
| 1173 | } |
| 1174 | } |
| 1175 | |
| 1176 | memset( rsa, 0, sizeof( rsa_context ) ); |
| 1177 | |
| 1178 | p = buf; |
| 1179 | end = buf + buflen; |
| 1180 | |
| 1181 | /* |
| 1182 | * RSAPrivateKey ::= SEQUENCE { |
| 1183 | * version Version, |
| 1184 | * modulus INTEGER, -- n |
| 1185 | * publicExponent INTEGER, -- e |
| 1186 | * privateExponent INTEGER, -- d |
| 1187 | * prime1 INTEGER, -- p |
| 1188 | * prime2 INTEGER, -- q |
| 1189 | * exponent1 INTEGER, -- d mod (p-1) |
| 1190 | * exponent2 INTEGER, -- d mod (q-1) |
| 1191 | * coefficient INTEGER, -- (inverse of q) mod p |
| 1192 | * otherPrimeInfos OtherPrimeInfos OPTIONAL |
| 1193 | * } |
| 1194 | */ |
| 1195 | if( ( ret = asn1_get_tag( &p, end, &len, |
| 1196 | ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) |
| 1197 | { |
| 1198 | if( s1 != NULL ) |
| 1199 | free( buf ); |
| 1200 | |
| 1201 | rsa_free( rsa ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1202 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1203 | } |
| 1204 | |
| 1205 | end = p + len; |
| 1206 | |
| 1207 | if( ( ret = asn1_get_int( &p, end, &rsa->ver ) ) != 0 ) |
| 1208 | { |
| 1209 | if( s1 != NULL ) |
| 1210 | free( buf ); |
| 1211 | |
| 1212 | rsa_free( rsa ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1213 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT | ret ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1214 | } |
| 1215 | |
| 1216 | if( rsa->ver != 0 ) |
| 1217 | { |
| 1218 | if( s1 != NULL ) |
| 1219 | free( buf ); |
| 1220 | |
| 1221 | rsa_free( rsa ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1222 | return( ret | POLARSSL_ERR_X509_KEY_INVALID_VERSION ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1223 | } |
| 1224 | |
| 1225 | if( ( ret = asn1_get_mpi( &p, end, &rsa->N ) ) != 0 || |
| 1226 | ( ret = asn1_get_mpi( &p, end, &rsa->E ) ) != 0 || |
| 1227 | ( ret = asn1_get_mpi( &p, end, &rsa->D ) ) != 0 || |
| 1228 | ( ret = asn1_get_mpi( &p, end, &rsa->P ) ) != 0 || |
| 1229 | ( ret = asn1_get_mpi( &p, end, &rsa->Q ) ) != 0 || |
| 1230 | ( ret = asn1_get_mpi( &p, end, &rsa->DP ) ) != 0 || |
| 1231 | ( ret = asn1_get_mpi( &p, end, &rsa->DQ ) ) != 0 || |
| 1232 | ( ret = asn1_get_mpi( &p, end, &rsa->QP ) ) != 0 ) |
| 1233 | { |
| 1234 | if( s1 != NULL ) |
| 1235 | free( buf ); |
| 1236 | |
| 1237 | rsa_free( rsa ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1238 | return( ret | POLARSSL_ERR_X509_KEY_INVALID_FORMAT ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1239 | } |
| 1240 | |
| 1241 | rsa->len = mpi_size( &rsa->N ); |
| 1242 | |
| 1243 | if( p != end ) |
| 1244 | { |
| 1245 | if( s1 != NULL ) |
| 1246 | free( buf ); |
| 1247 | |
| 1248 | rsa_free( rsa ); |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1249 | return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT | |
| 1250 | POLARSSL_ERR_ASN1_LENGTH_MISMATCH ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1251 | } |
| 1252 | |
| 1253 | if( ( ret = rsa_check_privkey( rsa ) ) != 0 ) |
| 1254 | { |
| 1255 | if( s1 != NULL ) |
| 1256 | free( buf ); |
| 1257 | |
| 1258 | rsa_free( rsa ); |
| 1259 | return( ret ); |
| 1260 | } |
| 1261 | |
| 1262 | if( s1 != NULL ) |
| 1263 | free( buf ); |
| 1264 | |
| 1265 | return( 0 ); |
| 1266 | } |
| 1267 | |
| 1268 | /* |
| 1269 | * Load and parse a private RSA key |
| 1270 | */ |
| 1271 | int x509parse_keyfile( rsa_context *rsa, char *path, char *pwd ) |
| 1272 | { |
| 1273 | int ret; |
| 1274 | FILE *f; |
| 1275 | size_t n; |
| 1276 | unsigned char *buf; |
| 1277 | |
| 1278 | if( ( f = fopen( path, "rb" ) ) == NULL ) |
| 1279 | return( 1 ); |
| 1280 | |
| 1281 | fseek( f, 0, SEEK_END ); |
| 1282 | n = (size_t) ftell( f ); |
| 1283 | fseek( f, 0, SEEK_SET ); |
| 1284 | |
| 1285 | if( ( buf = (unsigned char *) malloc( n + 1 ) ) == NULL ) |
| 1286 | return( 1 ); |
| 1287 | |
| 1288 | if( fread( buf, 1, n, f ) != n ) |
| 1289 | { |
| 1290 | fclose( f ); |
| 1291 | free( buf ); |
| 1292 | return( 1 ); |
| 1293 | } |
| 1294 | |
| 1295 | buf[n] = '\0'; |
| 1296 | |
| 1297 | if( pwd == NULL ) |
| 1298 | ret = x509parse_key( rsa, buf, (int) n, NULL, 0 ); |
| 1299 | else |
| 1300 | ret = x509parse_key( rsa, buf, (int) n, |
| 1301 | (unsigned char *) pwd, strlen( pwd ) ); |
| 1302 | |
| 1303 | memset( buf, 0, n + 1 ); |
| 1304 | free( buf ); |
| 1305 | fclose( f ); |
| 1306 | |
| 1307 | return( ret ); |
| 1308 | } |
| 1309 | |
| 1310 | #if defined _MSC_VER && !defined snprintf |
| 1311 | #define snprintf _snprintf |
| 1312 | #endif |
| 1313 | |
| 1314 | /* |
| 1315 | * Store the name in printable form into buf; no more |
| 1316 | * than (end - buf) characters will be written |
| 1317 | */ |
| 1318 | int x509parse_dn_gets( char *buf, char *end, x509_name *dn ) |
| 1319 | { |
| 1320 | int i; |
| 1321 | unsigned char c; |
| 1322 | x509_name *name; |
| 1323 | char s[128], *p; |
| 1324 | |
| 1325 | memset( s, 0, sizeof( s ) ); |
| 1326 | |
| 1327 | name = dn; |
| 1328 | p = buf; |
| 1329 | |
| 1330 | while( name != NULL ) |
| 1331 | { |
| 1332 | if( name != dn ) |
| 1333 | p += snprintf( p, end - p, ", " ); |
| 1334 | |
| 1335 | if( memcmp( name->oid.p, OID_X520, 2 ) == 0 ) |
| 1336 | { |
| 1337 | switch( name->oid.p[2] ) |
| 1338 | { |
| 1339 | case X520_COMMON_NAME: |
| 1340 | p += snprintf( p, end - p, "CN=" ); break; |
| 1341 | |
| 1342 | case X520_COUNTRY: |
| 1343 | p += snprintf( p, end - p, "C=" ); break; |
| 1344 | |
| 1345 | case X520_LOCALITY: |
| 1346 | p += snprintf( p, end - p, "L=" ); break; |
| 1347 | |
| 1348 | case X520_STATE: |
| 1349 | p += snprintf( p, end - p, "ST=" ); break; |
| 1350 | |
| 1351 | case X520_ORGANIZATION: |
| 1352 | p += snprintf( p, end - p, "O=" ); break; |
| 1353 | |
| 1354 | case X520_ORG_UNIT: |
| 1355 | p += snprintf( p, end - p, "OU=" ); break; |
| 1356 | |
| 1357 | default: |
| 1358 | p += snprintf( p, end - p, "0x%02X=", |
| 1359 | name->oid.p[2] ); |
| 1360 | break; |
| 1361 | } |
| 1362 | } |
| 1363 | else if( memcmp( name->oid.p, OID_PKCS9, 8 ) == 0 ) |
| 1364 | { |
| 1365 | switch( name->oid.p[8] ) |
| 1366 | { |
| 1367 | case PKCS9_EMAIL: |
| 1368 | p += snprintf( p, end - p, "emailAddress=" ); break; |
| 1369 | |
| 1370 | default: |
| 1371 | p += snprintf( p, end - p, "0x%02X=", |
| 1372 | name->oid.p[8] ); |
| 1373 | break; |
| 1374 | } |
| 1375 | } |
| 1376 | else |
| 1377 | p += snprintf( p, end - p, "\?\?=" ); |
| 1378 | |
| 1379 | for( i = 0; i < name->val.len; i++ ) |
| 1380 | { |
| 1381 | if( i >= (int) sizeof( s ) - 1 ) |
| 1382 | break; |
| 1383 | |
| 1384 | c = name->val.p[i]; |
| 1385 | if( c < 32 || c == 127 || ( c > 128 && c < 160 ) ) |
| 1386 | s[i] = '?'; |
| 1387 | else s[i] = c; |
| 1388 | } |
| 1389 | s[i] = '\0'; |
| 1390 | p += snprintf( p, end - p, "%s", s ); |
| 1391 | name = name->next; |
| 1392 | } |
| 1393 | |
| 1394 | return( p - buf ); |
| 1395 | } |
| 1396 | |
| 1397 | /* |
| 1398 | * Return an informational string about the |
| 1399 | * certificate, or NULL if memory allocation failed |
| 1400 | */ |
| 1401 | char *x509parse_cert_info( char *prefix, x509_cert *crt ) |
| 1402 | { |
| 1403 | int i, n; |
| 1404 | char *p, *end; |
| 1405 | static char buf[512]; |
| 1406 | |
| 1407 | p = buf; |
| 1408 | end = buf + sizeof( buf ) - 1; |
| 1409 | |
| 1410 | p += snprintf( p, end - p, "%scert. version : %d\n", |
| 1411 | prefix, crt->version ); |
| 1412 | p += snprintf( p, end - p, "%sserial number : ", |
| 1413 | prefix ); |
| 1414 | |
| 1415 | n = ( crt->serial.len <= 32 ) |
| 1416 | ? crt->serial.len : 32; |
| 1417 | |
| 1418 | for( i = 0; i < n; i++ ) |
| 1419 | p += snprintf( p, end - p, "%02X%s", |
| 1420 | crt->serial.p[i], ( i < n - 1 ) ? ":" : "" ); |
| 1421 | |
| 1422 | p += snprintf( p, end - p, "\n%sissuer name : ", prefix ); |
| 1423 | p += x509parse_dn_gets( p, end, &crt->issuer ); |
| 1424 | |
| 1425 | p += snprintf( p, end - p, "\n%ssubject name : ", prefix ); |
| 1426 | p += x509parse_dn_gets( p, end, &crt->subject ); |
| 1427 | |
| 1428 | p += snprintf( p, end - p, "\n%sissued on : " \ |
| 1429 | "%04d-%02d-%02d %02d:%02d:%02d", prefix, |
| 1430 | crt->valid_from.year, crt->valid_from.mon, |
| 1431 | crt->valid_from.day, crt->valid_from.hour, |
| 1432 | crt->valid_from.min, crt->valid_from.sec ); |
| 1433 | |
| 1434 | p += snprintf( p, end - p, "\n%sexpires on : " \ |
| 1435 | "%04d-%02d-%02d %02d:%02d:%02d", prefix, |
| 1436 | crt->valid_to.year, crt->valid_to.mon, |
| 1437 | crt->valid_to.day, crt->valid_to.hour, |
| 1438 | crt->valid_to.min, crt->valid_to.sec ); |
| 1439 | |
| 1440 | p += snprintf( p, end - p, "\n%ssigned using : RSA+", prefix ); |
| 1441 | |
| 1442 | switch( crt->sig_oid1.p[8] ) |
| 1443 | { |
| 1444 | case RSA_MD2 : p += snprintf( p, end - p, "MD2" ); break; |
| 1445 | case RSA_MD4 : p += snprintf( p, end - p, "MD4" ); break; |
| 1446 | case RSA_MD5 : p += snprintf( p, end - p, "MD5" ); break; |
| 1447 | case RSA_SHA1: p += snprintf( p, end - p, "SHA1" ); break; |
| 1448 | default: p += snprintf( p, end - p, "???" ); break; |
| 1449 | } |
| 1450 | |
| 1451 | p += snprintf( p, end - p, "\n%sRSA key size : %d bits\n", prefix, |
| 1452 | crt->rsa.N.n * (int) sizeof( unsigned long ) * 8 ); |
| 1453 | |
| 1454 | return( buf ); |
| 1455 | } |
| 1456 | |
| 1457 | /* |
| 1458 | * Return 0 if the certificate is still valid, or BADCERT_EXPIRED |
| 1459 | */ |
| 1460 | int x509parse_expired( x509_cert *crt ) |
| 1461 | { |
| 1462 | struct tm *lt; |
| 1463 | time_t tt; |
| 1464 | |
| 1465 | tt = time( NULL ); |
| 1466 | lt = localtime( &tt ); |
| 1467 | |
| 1468 | if( lt->tm_year > crt->valid_to.year - 1900 ) |
| 1469 | return( BADCERT_EXPIRED ); |
| 1470 | |
| 1471 | if( lt->tm_year == crt->valid_to.year - 1900 && |
| 1472 | lt->tm_mon > crt->valid_to.mon - 1 ) |
| 1473 | return( BADCERT_EXPIRED ); |
| 1474 | |
| 1475 | if( lt->tm_year == crt->valid_to.year - 1900 && |
| 1476 | lt->tm_mon == crt->valid_to.mon - 1 && |
| 1477 | lt->tm_mday > crt->valid_to.day ) |
| 1478 | return( BADCERT_EXPIRED ); |
| 1479 | |
| 1480 | return( 0 ); |
| 1481 | } |
| 1482 | |
| 1483 | static void x509_hash( unsigned char *in, int len, int alg, |
| 1484 | unsigned char *out ) |
| 1485 | { |
| 1486 | switch( alg ) |
| 1487 | { |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1488 | #if defined(POLARSSL_MD2_C) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1489 | case RSA_MD2 : md2( in, len, out ); break; |
| 1490 | #endif |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1491 | #if defined(POLARSSL_MD4_C) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1492 | case RSA_MD4 : md4( in, len, out ); break; |
| 1493 | #endif |
| 1494 | case RSA_MD5 : md5( in, len, out ); break; |
| 1495 | case RSA_SHA1 : sha1( in, len, out ); break; |
| 1496 | default: |
| 1497 | memset( out, '\xFF', len ); |
| 1498 | break; |
| 1499 | } |
| 1500 | } |
| 1501 | |
| 1502 | /* |
| 1503 | * Verify the certificate validity |
| 1504 | */ |
| 1505 | int x509parse_verify( x509_cert *crt, |
| 1506 | x509_cert *trust_ca, |
| 1507 | char *cn, int *flags ) |
| 1508 | { |
| 1509 | int cn_len; |
| 1510 | int hash_id; |
| 1511 | int pathlen; |
| 1512 | x509_cert *cur; |
| 1513 | x509_name *name; |
| 1514 | unsigned char hash[20]; |
| 1515 | |
| 1516 | *flags = x509parse_expired( crt ); |
| 1517 | |
| 1518 | if( cn != NULL ) |
| 1519 | { |
| 1520 | name = &crt->subject; |
| 1521 | cn_len = strlen( cn ); |
| 1522 | |
| 1523 | while( name != NULL ) |
| 1524 | { |
| 1525 | if( memcmp( name->oid.p, OID_CN, 3 ) == 0 && |
| 1526 | memcmp( name->val.p, cn, cn_len ) == 0 && |
| 1527 | name->val.len == cn_len ) |
| 1528 | break; |
| 1529 | |
| 1530 | name = name->next; |
| 1531 | } |
| 1532 | |
| 1533 | if( name == NULL ) |
| 1534 | *flags |= BADCERT_CN_MISMATCH; |
| 1535 | } |
| 1536 | |
| 1537 | *flags |= BADCERT_NOT_TRUSTED; |
| 1538 | |
| 1539 | /* |
| 1540 | * Iterate upwards in the given cert chain, |
| 1541 | * ignoring any upper cert with CA != TRUE. |
| 1542 | */ |
| 1543 | cur = crt->next; |
| 1544 | |
| 1545 | pathlen = 1; |
| 1546 | |
| 1547 | while( cur->version != 0 ) |
| 1548 | { |
| 1549 | if( cur->ca_istrue == 0 || |
| 1550 | crt->issuer_raw.len != cur->subject_raw.len || |
| 1551 | memcmp( crt->issuer_raw.p, cur->subject_raw.p, |
| 1552 | crt->issuer_raw.len ) != 0 ) |
| 1553 | { |
| 1554 | cur = cur->next; |
| 1555 | continue; |
| 1556 | } |
| 1557 | |
| 1558 | hash_id = crt->sig_oid1.p[8]; |
| 1559 | |
| 1560 | x509_hash( crt->tbs.p, crt->tbs.len, hash_id, hash ); |
| 1561 | |
| 1562 | if( rsa_pkcs1_verify( &cur->rsa, RSA_PUBLIC, hash_id, |
| 1563 | 0, hash, crt->sig.p ) != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1564 | return( POLARSSL_ERR_X509_CERT_VERIFY_FAILED ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1565 | |
| 1566 | pathlen++; |
| 1567 | |
| 1568 | crt = cur; |
| 1569 | cur = crt->next; |
| 1570 | } |
| 1571 | |
| 1572 | /* |
| 1573 | * Atempt to validate topmost cert with our CA chain. |
| 1574 | */ |
| 1575 | while( trust_ca->version != 0 ) |
| 1576 | { |
| 1577 | if( crt->issuer_raw.len != trust_ca->subject_raw.len || |
| 1578 | memcmp( crt->issuer_raw.p, trust_ca->subject_raw.p, |
| 1579 | crt->issuer_raw.len ) != 0 ) |
| 1580 | { |
| 1581 | trust_ca = trust_ca->next; |
| 1582 | continue; |
| 1583 | } |
| 1584 | |
| 1585 | if( trust_ca->max_pathlen > 0 && |
| 1586 | trust_ca->max_pathlen < pathlen ) |
| 1587 | break; |
| 1588 | |
| 1589 | hash_id = crt->sig_oid1.p[8]; |
| 1590 | |
| 1591 | x509_hash( crt->tbs.p, crt->tbs.len, hash_id, hash ); |
| 1592 | |
| 1593 | if( rsa_pkcs1_verify( &trust_ca->rsa, RSA_PUBLIC, hash_id, |
| 1594 | 0, hash, crt->sig.p ) == 0 ) |
| 1595 | { |
| 1596 | /* |
| 1597 | * cert. is signed by a trusted CA |
| 1598 | */ |
| 1599 | *flags &= ~BADCERT_NOT_TRUSTED; |
| 1600 | break; |
| 1601 | } |
| 1602 | |
| 1603 | trust_ca = trust_ca->next; |
| 1604 | } |
| 1605 | |
| 1606 | if( *flags != 0 ) |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1607 | return( POLARSSL_ERR_X509_CERT_VERIFY_FAILED ); |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1608 | |
| 1609 | return( 0 ); |
| 1610 | } |
| 1611 | |
| 1612 | /* |
| 1613 | * Unallocate all certificate data |
| 1614 | */ |
| 1615 | void x509_free( x509_cert *crt ) |
| 1616 | { |
| 1617 | x509_cert *cert_cur = crt; |
| 1618 | x509_cert *cert_prv; |
| 1619 | x509_name *name_cur; |
| 1620 | x509_name *name_prv; |
| 1621 | |
| 1622 | if( crt == NULL ) |
| 1623 | return; |
| 1624 | |
| 1625 | do |
| 1626 | { |
| 1627 | rsa_free( &cert_cur->rsa ); |
| 1628 | |
| 1629 | name_cur = cert_cur->issuer.next; |
| 1630 | while( name_cur != NULL ) |
| 1631 | { |
| 1632 | name_prv = name_cur; |
| 1633 | name_cur = name_cur->next; |
| 1634 | memset( name_prv, 0, sizeof( x509_name ) ); |
| 1635 | free( name_prv ); |
| 1636 | } |
| 1637 | |
| 1638 | name_cur = cert_cur->subject.next; |
| 1639 | while( name_cur != NULL ) |
| 1640 | { |
| 1641 | name_prv = name_cur; |
| 1642 | name_cur = name_cur->next; |
| 1643 | memset( name_prv, 0, sizeof( x509_name ) ); |
| 1644 | free( name_prv ); |
| 1645 | } |
| 1646 | |
| 1647 | if( cert_cur->raw.p != NULL ) |
| 1648 | { |
| 1649 | memset( cert_cur->raw.p, 0, cert_cur->raw.len ); |
| 1650 | free( cert_cur->raw.p ); |
| 1651 | } |
| 1652 | |
| 1653 | cert_cur = cert_cur->next; |
| 1654 | } |
| 1655 | while( cert_cur != NULL ); |
| 1656 | |
| 1657 | cert_cur = crt; |
| 1658 | do |
| 1659 | { |
| 1660 | cert_prv = cert_cur; |
| 1661 | cert_cur = cert_cur->next; |
| 1662 | |
| 1663 | memset( cert_prv, 0, sizeof( x509_cert ) ); |
| 1664 | if( cert_prv != crt ) |
| 1665 | free( cert_prv ); |
| 1666 | } |
| 1667 | while( cert_cur != NULL ); |
| 1668 | } |
| 1669 | |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1670 | #if defined(POLARSSL_SELF_TEST) |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1671 | |
Paul Bakker | 40e4694 | 2009-01-03 21:51:57 +0000 | [diff] [blame] | 1672 | #include "polarssl/certs.h" |
Paul Bakker | 5121ce5 | 2009-01-03 21:22:43 +0000 | [diff] [blame] | 1673 | |
| 1674 | /* |
| 1675 | * Checkup routine |
| 1676 | */ |
| 1677 | int x509_self_test( int verbose ) |
| 1678 | { |
| 1679 | int ret, i, j; |
| 1680 | x509_cert cacert; |
| 1681 | x509_cert clicert; |
| 1682 | rsa_context rsa; |
| 1683 | |
| 1684 | if( verbose != 0 ) |
| 1685 | printf( " X.509 certificate load: " ); |
| 1686 | |
| 1687 | memset( &clicert, 0, sizeof( x509_cert ) ); |
| 1688 | |
| 1689 | ret = x509parse_crt( &clicert, (unsigned char *) test_cli_crt, |
| 1690 | strlen( test_cli_crt ) ); |
| 1691 | if( ret != 0 ) |
| 1692 | { |
| 1693 | if( verbose != 0 ) |
| 1694 | printf( "failed\n" ); |
| 1695 | |
| 1696 | return( ret ); |
| 1697 | } |
| 1698 | |
| 1699 | memset( &cacert, 0, sizeof( x509_cert ) ); |
| 1700 | |
| 1701 | ret = x509parse_crt( &cacert, (unsigned char *) test_ca_crt, |
| 1702 | strlen( test_ca_crt ) ); |
| 1703 | if( ret != 0 ) |
| 1704 | { |
| 1705 | if( verbose != 0 ) |
| 1706 | printf( "failed\n" ); |
| 1707 | |
| 1708 | return( ret ); |
| 1709 | } |
| 1710 | |
| 1711 | if( verbose != 0 ) |
| 1712 | printf( "passed\n X.509 private key load: " ); |
| 1713 | |
| 1714 | i = strlen( test_ca_key ); |
| 1715 | j = strlen( test_ca_pwd ); |
| 1716 | |
| 1717 | if( ( ret = x509parse_key( &rsa, |
| 1718 | (unsigned char *) test_ca_key, i, |
| 1719 | (unsigned char *) test_ca_pwd, j ) ) != 0 ) |
| 1720 | { |
| 1721 | if( verbose != 0 ) |
| 1722 | printf( "failed\n" ); |
| 1723 | |
| 1724 | return( ret ); |
| 1725 | } |
| 1726 | |
| 1727 | if( verbose != 0 ) |
| 1728 | printf( "passed\n X.509 signature verify: "); |
| 1729 | |
| 1730 | ret = x509parse_verify( &clicert, &cacert, "Joe User", &i ); |
| 1731 | if( ret != 0 ) |
| 1732 | { |
| 1733 | if( verbose != 0 ) |
| 1734 | printf( "failed\n" ); |
| 1735 | |
| 1736 | return( ret ); |
| 1737 | } |
| 1738 | |
| 1739 | if( verbose != 0 ) |
| 1740 | printf( "passed\n\n" ); |
| 1741 | |
| 1742 | x509_free( &cacert ); |
| 1743 | x509_free( &clicert ); |
| 1744 | rsa_free( &rsa ); |
| 1745 | |
| 1746 | return( 0 ); |
| 1747 | } |
| 1748 | |
| 1749 | #endif |
| 1750 | |
| 1751 | #endif |