Avnet / WNCInterface

The WDCInterface is is a drop-in replacement for an EthernetInterface class that allows the user to connect to the Internet with a Wistron NeWeb Corporation (WNC) M14A2A Series data module using the standard network Socket API's. This interface class is used in the AT&T Cellular IoT Starter Kit which is sold by Avnet (http://cloudconnectkits.org/product/att-cellular-iot-starter-kit).

Dependencies:   WncControllerK64F

Dependents:   WNCProximityMqtt Pubnub_ATT_IoT_SK_WNC_sync BluemixDemo BluemixQS ... more

See the WNCInterface README in the Wiki tab for detailed information on this library.

mbedtls/source/x509_csr.c@12:0071cb144c7a, 2016-11-01 (annotated)

Committer:
JMF
Date:
Tue Nov 01 14:22:56 2016 +0000
Revision:
12:0071cb144c7a
Adding mbedtls files

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JMF 12:0071cb144c7a 1 /*
JMF 12:0071cb144c7a 2 * X.509 Certificate Signing Request (CSR) parsing
JMF 12:0071cb144c7a 3 *
JMF 12:0071cb144c7a 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
JMF 12:0071cb144c7a 5 * SPDX-License-Identifier: Apache-2.0
JMF 12:0071cb144c7a 6 *
JMF 12:0071cb144c7a 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
JMF 12:0071cb144c7a 8 * not use this file except in compliance with the License.
JMF 12:0071cb144c7a 9 * You may obtain a copy of the License at
JMF 12:0071cb144c7a 10 *
JMF 12:0071cb144c7a 11 * http://www.apache.org/licenses/LICENSE-2.0
JMF 12:0071cb144c7a 12 *
JMF 12:0071cb144c7a 13 * Unless required by applicable law or agreed to in writing, software
JMF 12:0071cb144c7a 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
JMF 12:0071cb144c7a 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
JMF 12:0071cb144c7a 16 * See the License for the specific language governing permissions and
JMF 12:0071cb144c7a 17 * limitations under the License.
JMF 12:0071cb144c7a 18 *
JMF 12:0071cb144c7a 19 * This file is part of mbed TLS (https://tls.mbed.org)
JMF 12:0071cb144c7a 20 */
JMF 12:0071cb144c7a 21 /*
JMF 12:0071cb144c7a 22 * The ITU-T X.509 standard defines a certificate format for PKI.
JMF 12:0071cb144c7a 23 *
JMF 12:0071cb144c7a 24 * http://www.ietf.org/rfc/rfc5280.txt (Certificates and CRLs)
JMF 12:0071cb144c7a 25 * http://www.ietf.org/rfc/rfc3279.txt (Alg IDs for CRLs)
JMF 12:0071cb144c7a 26 * http://www.ietf.org/rfc/rfc2986.txt (CSRs, aka PKCS#10)
JMF 12:0071cb144c7a 27 *
JMF 12:0071cb144c7a 28 * http://www.itu.int/ITU-T/studygroups/com17/languages/X.680-0207.pdf
JMF 12:0071cb144c7a 29 * http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf
JMF 12:0071cb144c7a 30 */
JMF 12:0071cb144c7a 31
JMF 12:0071cb144c7a 32 #if !defined(MBEDTLS_CONFIG_FILE)
JMF 12:0071cb144c7a 33 #include "mbedtls/config.h"
JMF 12:0071cb144c7a 34 #else
JMF 12:0071cb144c7a 35 #include MBEDTLS_CONFIG_FILE
JMF 12:0071cb144c7a 36 #endif
JMF 12:0071cb144c7a 37
JMF 12:0071cb144c7a 38 #if defined(MBEDTLS_X509_CSR_PARSE_C)
JMF 12:0071cb144c7a 39
JMF 12:0071cb144c7a 40 #include "mbedtls/x509_csr.h"
JMF 12:0071cb144c7a 41 #include "mbedtls/oid.h"
JMF 12:0071cb144c7a 42
JMF 12:0071cb144c7a 43 #include <string.h>
JMF 12:0071cb144c7a 44
JMF 12:0071cb144c7a 45 #if defined(MBEDTLS_PEM_PARSE_C)
JMF 12:0071cb144c7a 46 #include "mbedtls/pem.h"
JMF 12:0071cb144c7a 47 #endif
JMF 12:0071cb144c7a 48
JMF 12:0071cb144c7a 49 #if defined(MBEDTLS_PLATFORM_C)
JMF 12:0071cb144c7a 50 #include "mbedtls/platform.h"
JMF 12:0071cb144c7a 51 #else
JMF 12:0071cb144c7a 52 #include <stdlib.h>
JMF 12:0071cb144c7a 53 #include <stdio.h>
JMF 12:0071cb144c7a 54 #define mbedtls_free free
JMF 12:0071cb144c7a 55 #define mbedtls_calloc calloc
JMF 12:0071cb144c7a 56 #define mbedtls_snprintf snprintf
JMF 12:0071cb144c7a 57 #endif
JMF 12:0071cb144c7a 58
JMF 12:0071cb144c7a 59 #if defined(MBEDTLS_FS_IO) || defined(EFIX64) || defined(EFI32)
JMF 12:0071cb144c7a 60 #include <stdio.h>
JMF 12:0071cb144c7a 61 #endif
JMF 12:0071cb144c7a 62
JMF 12:0071cb144c7a 63 /* Implementation that should never be optimized out by the compiler */
JMF 12:0071cb144c7a 64 static void mbedtls_zeroize( void *v, size_t n ) {
JMF 12:0071cb144c7a 65 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
JMF 12:0071cb144c7a 66 }
JMF 12:0071cb144c7a 67
JMF 12:0071cb144c7a 68 /*
JMF 12:0071cb144c7a 69 * Version ::= INTEGER { v1(0) }
JMF 12:0071cb144c7a 70 */
JMF 12:0071cb144c7a 71 static int x509_csr_get_version( unsigned char **p,
JMF 12:0071cb144c7a 72 const unsigned char *end,
JMF 12:0071cb144c7a 73 int *ver )
JMF 12:0071cb144c7a 74 {
JMF 12:0071cb144c7a 75 int ret;
JMF 12:0071cb144c7a 76
JMF 12:0071cb144c7a 77 if( ( ret = mbedtls_asn1_get_int( p, end, ver ) ) != 0 )
JMF 12:0071cb144c7a 78 {
JMF 12:0071cb144c7a 79 if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
JMF 12:0071cb144c7a 80 {
JMF 12:0071cb144c7a 81 *ver = 0;
JMF 12:0071cb144c7a 82 return( 0 );
JMF 12:0071cb144c7a 83 }
JMF 12:0071cb144c7a 84
JMF 12:0071cb144c7a 85 return( MBEDTLS_ERR_X509_INVALID_VERSION + ret );
JMF 12:0071cb144c7a 86 }
JMF 12:0071cb144c7a 87
JMF 12:0071cb144c7a 88 return( 0 );
JMF 12:0071cb144c7a 89 }
JMF 12:0071cb144c7a 90
JMF 12:0071cb144c7a 91 /*
JMF 12:0071cb144c7a 92 * Parse a CSR in DER format
JMF 12:0071cb144c7a 93 */
JMF 12:0071cb144c7a 94 int mbedtls_x509_csr_parse_der( mbedtls_x509_csr *csr,
JMF 12:0071cb144c7a 95 const unsigned char *buf, size_t buflen )
JMF 12:0071cb144c7a 96 {
JMF 12:0071cb144c7a 97 int ret;
JMF 12:0071cb144c7a 98 size_t len;
JMF 12:0071cb144c7a 99 unsigned char *p, *end;
JMF 12:0071cb144c7a 100 mbedtls_x509_buf sig_params;
JMF 12:0071cb144c7a 101
JMF 12:0071cb144c7a 102 memset( &sig_params, 0, sizeof( mbedtls_x509_buf ) );
JMF 12:0071cb144c7a 103
JMF 12:0071cb144c7a 104 /*
JMF 12:0071cb144c7a 105 * Check for valid input
JMF 12:0071cb144c7a 106 */
JMF 12:0071cb144c7a 107 if( csr == NULL || buf == NULL || buflen == 0 )
JMF 12:0071cb144c7a 108 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 109
JMF 12:0071cb144c7a 110 mbedtls_x509_csr_init( csr );
JMF 12:0071cb144c7a 111
JMF 12:0071cb144c7a 112 /*
JMF 12:0071cb144c7a 113 * first copy the raw DER data
JMF 12:0071cb144c7a 114 */
JMF 12:0071cb144c7a 115 p = mbedtls_calloc( 1, len = buflen );
JMF 12:0071cb144c7a 116
JMF 12:0071cb144c7a 117 if( p == NULL )
JMF 12:0071cb144c7a 118 return( MBEDTLS_ERR_X509_ALLOC_FAILED );
JMF 12:0071cb144c7a 119
JMF 12:0071cb144c7a 120 memcpy( p, buf, buflen );
JMF 12:0071cb144c7a 121
JMF 12:0071cb144c7a 122 csr->raw.p = p;
JMF 12:0071cb144c7a 123 csr->raw.len = len;
JMF 12:0071cb144c7a 124 end = p + len;
JMF 12:0071cb144c7a 125
JMF 12:0071cb144c7a 126 /*
JMF 12:0071cb144c7a 127 * CertificationRequest ::= SEQUENCE {
JMF 12:0071cb144c7a 128 * certificationRequestInfo CertificationRequestInfo,
JMF 12:0071cb144c7a 129 * signatureAlgorithm AlgorithmIdentifier,
JMF 12:0071cb144c7a 130 * signature BIT STRING
JMF 12:0071cb144c7a 131 * }
JMF 12:0071cb144c7a 132 */
JMF 12:0071cb144c7a 133 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
JMF 12:0071cb144c7a 134 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
JMF 12:0071cb144c7a 135 {
JMF 12:0071cb144c7a 136 mbedtls_x509_csr_free( csr );
JMF 12:0071cb144c7a 137 return( MBEDTLS_ERR_X509_INVALID_FORMAT );
JMF 12:0071cb144c7a 138 }
JMF 12:0071cb144c7a 139
JMF 12:0071cb144c7a 140 if( len != (size_t) ( end - p ) )
JMF 12:0071cb144c7a 141 {
JMF 12:0071cb144c7a 142 mbedtls_x509_csr_free( csr );
JMF 12:0071cb144c7a 143 return( MBEDTLS_ERR_X509_INVALID_FORMAT +
JMF 12:0071cb144c7a 144 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
JMF 12:0071cb144c7a 145 }
JMF 12:0071cb144c7a 146
JMF 12:0071cb144c7a 147 /*
JMF 12:0071cb144c7a 148 * CertificationRequestInfo ::= SEQUENCE {
JMF 12:0071cb144c7a 149 */
JMF 12:0071cb144c7a 150 csr->cri.p = p;
JMF 12:0071cb144c7a 151
JMF 12:0071cb144c7a 152 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
JMF 12:0071cb144c7a 153 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
JMF 12:0071cb144c7a 154 {
JMF 12:0071cb144c7a 155 mbedtls_x509_csr_free( csr );
JMF 12:0071cb144c7a 156 return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
JMF 12:0071cb144c7a 157 }
JMF 12:0071cb144c7a 158
JMF 12:0071cb144c7a 159 end = p + len;
JMF 12:0071cb144c7a 160 csr->cri.len = end - csr->cri.p;
JMF 12:0071cb144c7a 161
JMF 12:0071cb144c7a 162 /*
JMF 12:0071cb144c7a 163 * Version ::= INTEGER { v1(0) }
JMF 12:0071cb144c7a 164 */
JMF 12:0071cb144c7a 165 if( ( ret = x509_csr_get_version( &p, end, &csr->version ) ) != 0 )
JMF 12:0071cb144c7a 166 {
JMF 12:0071cb144c7a 167 mbedtls_x509_csr_free( csr );
JMF 12:0071cb144c7a 168 return( ret );
JMF 12:0071cb144c7a 169 }
JMF 12:0071cb144c7a 170
JMF 12:0071cb144c7a 171 csr->version++;
JMF 12:0071cb144c7a 172
JMF 12:0071cb144c7a 173 if( csr->version != 1 )
JMF 12:0071cb144c7a 174 {
JMF 12:0071cb144c7a 175 mbedtls_x509_csr_free( csr );
JMF 12:0071cb144c7a 176 return( MBEDTLS_ERR_X509_UNKNOWN_VERSION );
JMF 12:0071cb144c7a 177 }
JMF 12:0071cb144c7a 178
JMF 12:0071cb144c7a 179 /*
JMF 12:0071cb144c7a 180 * subject Name
JMF 12:0071cb144c7a 181 */
JMF 12:0071cb144c7a 182 csr->subject_raw.p = p;
JMF 12:0071cb144c7a 183
JMF 12:0071cb144c7a 184 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
JMF 12:0071cb144c7a 185 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
JMF 12:0071cb144c7a 186 {
JMF 12:0071cb144c7a 187 mbedtls_x509_csr_free( csr );
JMF 12:0071cb144c7a 188 return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
JMF 12:0071cb144c7a 189 }
JMF 12:0071cb144c7a 190
JMF 12:0071cb144c7a 191 if( ( ret = mbedtls_x509_get_name( &p, p + len, &csr->subject ) ) != 0 )
JMF 12:0071cb144c7a 192 {
JMF 12:0071cb144c7a 193 mbedtls_x509_csr_free( csr );
JMF 12:0071cb144c7a 194 return( ret );
JMF 12:0071cb144c7a 195 }
JMF 12:0071cb144c7a 196
JMF 12:0071cb144c7a 197 csr->subject_raw.len = p - csr->subject_raw.p;
JMF 12:0071cb144c7a 198
JMF 12:0071cb144c7a 199 /*
JMF 12:0071cb144c7a 200 * subjectPKInfo SubjectPublicKeyInfo
JMF 12:0071cb144c7a 201 */
JMF 12:0071cb144c7a 202 if( ( ret = mbedtls_pk_parse_subpubkey( &p, end, &csr->pk ) ) != 0 )
JMF 12:0071cb144c7a 203 {
JMF 12:0071cb144c7a 204 mbedtls_x509_csr_free( csr );
JMF 12:0071cb144c7a 205 return( ret );
JMF 12:0071cb144c7a 206 }
JMF 12:0071cb144c7a 207
JMF 12:0071cb144c7a 208 /*
JMF 12:0071cb144c7a 209 * attributes [0] Attributes
JMF 12:0071cb144c7a 210 *
JMF 12:0071cb144c7a 211 * The list of possible attributes is open-ended, though RFC 2985
JMF 12:0071cb144c7a 212 * (PKCS#9) defines a few in section 5.4. We currently don't support any,
JMF 12:0071cb144c7a 213 * so we just ignore them. This is a safe thing to do as the worst thing
JMF 12:0071cb144c7a 214 * that could happen is that we issue a certificate that does not match
JMF 12:0071cb144c7a 215 * the requester's expectations - this cannot cause a violation of our
JMF 12:0071cb144c7a 216 * signature policies.
JMF 12:0071cb144c7a 217 */
JMF 12:0071cb144c7a 218 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
JMF 12:0071cb144c7a 219 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_CONTEXT_SPECIFIC ) ) != 0 )
JMF 12:0071cb144c7a 220 {
JMF 12:0071cb144c7a 221 mbedtls_x509_csr_free( csr );
JMF 12:0071cb144c7a 222 return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
JMF 12:0071cb144c7a 223 }
JMF 12:0071cb144c7a 224
JMF 12:0071cb144c7a 225 p += len;
JMF 12:0071cb144c7a 226
JMF 12:0071cb144c7a 227 end = csr->raw.p + csr->raw.len;
JMF 12:0071cb144c7a 228
JMF 12:0071cb144c7a 229 /*
JMF 12:0071cb144c7a 230 * signatureAlgorithm AlgorithmIdentifier,
JMF 12:0071cb144c7a 231 * signature BIT STRING
JMF 12:0071cb144c7a 232 */
JMF 12:0071cb144c7a 233 if( ( ret = mbedtls_x509_get_alg( &p, end, &csr->sig_oid, &sig_params ) ) != 0 )
JMF 12:0071cb144c7a 234 {
JMF 12:0071cb144c7a 235 mbedtls_x509_csr_free( csr );
JMF 12:0071cb144c7a 236 return( ret );
JMF 12:0071cb144c7a 237 }
JMF 12:0071cb144c7a 238
JMF 12:0071cb144c7a 239 if( ( ret = mbedtls_x509_get_sig_alg( &csr->sig_oid, &sig_params,
JMF 12:0071cb144c7a 240 &csr->sig_md, &csr->sig_pk,
JMF 12:0071cb144c7a 241 &csr->sig_opts ) ) != 0 )
JMF 12:0071cb144c7a 242 {
JMF 12:0071cb144c7a 243 mbedtls_x509_csr_free( csr );
JMF 12:0071cb144c7a 244 return( MBEDTLS_ERR_X509_UNKNOWN_SIG_ALG );
JMF 12:0071cb144c7a 245 }
JMF 12:0071cb144c7a 246
JMF 12:0071cb144c7a 247 if( ( ret = mbedtls_x509_get_sig( &p, end, &csr->sig ) ) != 0 )
JMF 12:0071cb144c7a 248 {
JMF 12:0071cb144c7a 249 mbedtls_x509_csr_free( csr );
JMF 12:0071cb144c7a 250 return( ret );
JMF 12:0071cb144c7a 251 }
JMF 12:0071cb144c7a 252
JMF 12:0071cb144c7a 253 if( p != end )
JMF 12:0071cb144c7a 254 {
JMF 12:0071cb144c7a 255 mbedtls_x509_csr_free( csr );
JMF 12:0071cb144c7a 256 return( MBEDTLS_ERR_X509_INVALID_FORMAT +
JMF 12:0071cb144c7a 257 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
JMF 12:0071cb144c7a 258 }
JMF 12:0071cb144c7a 259
JMF 12:0071cb144c7a 260 return( 0 );
JMF 12:0071cb144c7a 261 }
JMF 12:0071cb144c7a 262
JMF 12:0071cb144c7a 263 /*
JMF 12:0071cb144c7a 264 * Parse a CSR, allowing for PEM or raw DER encoding
JMF 12:0071cb144c7a 265 */
JMF 12:0071cb144c7a 266 int mbedtls_x509_csr_parse( mbedtls_x509_csr *csr, const unsigned char *buf, size_t buflen )
JMF 12:0071cb144c7a 267 {
JMF 12:0071cb144c7a 268 int ret;
JMF 12:0071cb144c7a 269 #if defined(MBEDTLS_PEM_PARSE_C)
JMF 12:0071cb144c7a 270 size_t use_len;
JMF 12:0071cb144c7a 271 mbedtls_pem_context pem;
JMF 12:0071cb144c7a 272 #endif
JMF 12:0071cb144c7a 273
JMF 12:0071cb144c7a 274 /*
JMF 12:0071cb144c7a 275 * Check for valid input
JMF 12:0071cb144c7a 276 */
JMF 12:0071cb144c7a 277 if( csr == NULL || buf == NULL || buflen == 0 )
JMF 12:0071cb144c7a 278 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 279
JMF 12:0071cb144c7a 280 #if defined(MBEDTLS_PEM_PARSE_C)
JMF 12:0071cb144c7a 281 mbedtls_pem_init( &pem );
JMF 12:0071cb144c7a 282
JMF 12:0071cb144c7a 283 /* Avoid calling mbedtls_pem_read_buffer() on non-null-terminated string */
JMF 12:0071cb144c7a 284 if( buf[buflen - 1] != '\0' )
JMF 12:0071cb144c7a 285 ret = MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT;
JMF 12:0071cb144c7a 286 else
JMF 12:0071cb144c7a 287 ret = mbedtls_pem_read_buffer( &pem,
JMF 12:0071cb144c7a 288 "-----BEGIN CERTIFICATE REQUEST-----",
JMF 12:0071cb144c7a 289 "-----END CERTIFICATE REQUEST-----",
JMF 12:0071cb144c7a 290 buf, NULL, 0, &use_len );
JMF 12:0071cb144c7a 291
JMF 12:0071cb144c7a 292 if( ret == 0 )
JMF 12:0071cb144c7a 293 {
JMF 12:0071cb144c7a 294 /*
JMF 12:0071cb144c7a 295 * Was PEM encoded, parse the result
JMF 12:0071cb144c7a 296 */
JMF 12:0071cb144c7a 297 if( ( ret = mbedtls_x509_csr_parse_der( csr, pem.buf, pem.buflen ) ) != 0 )
JMF 12:0071cb144c7a 298 return( ret );
JMF 12:0071cb144c7a 299
JMF 12:0071cb144c7a 300 mbedtls_pem_free( &pem );
JMF 12:0071cb144c7a 301 return( 0 );
JMF 12:0071cb144c7a 302 }
JMF 12:0071cb144c7a 303 else if( ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
JMF 12:0071cb144c7a 304 {
JMF 12:0071cb144c7a 305 mbedtls_pem_free( &pem );
JMF 12:0071cb144c7a 306 return( ret );
JMF 12:0071cb144c7a 307 }
JMF 12:0071cb144c7a 308 else
JMF 12:0071cb144c7a 309 #endif /* MBEDTLS_PEM_PARSE_C */
JMF 12:0071cb144c7a 310 return( mbedtls_x509_csr_parse_der( csr, buf, buflen ) );
JMF 12:0071cb144c7a 311 }
JMF 12:0071cb144c7a 312
JMF 12:0071cb144c7a 313 #if defined(MBEDTLS_FS_IO)
JMF 12:0071cb144c7a 314 /*
JMF 12:0071cb144c7a 315 * Load a CSR into the structure
JMF 12:0071cb144c7a 316 */
JMF 12:0071cb144c7a 317 int mbedtls_x509_csr_parse_file( mbedtls_x509_csr *csr, const char *path )
JMF 12:0071cb144c7a 318 {
JMF 12:0071cb144c7a 319 int ret;
JMF 12:0071cb144c7a 320 size_t n;
JMF 12:0071cb144c7a 321 unsigned char *buf;
JMF 12:0071cb144c7a 322
JMF 12:0071cb144c7a 323 if( ( ret = mbedtls_pk_load_file( path, &buf, &n ) ) != 0 )
JMF 12:0071cb144c7a 324 return( ret );
JMF 12:0071cb144c7a 325
JMF 12:0071cb144c7a 326 ret = mbedtls_x509_csr_parse( csr, buf, n );
JMF 12:0071cb144c7a 327
JMF 12:0071cb144c7a 328 mbedtls_zeroize( buf, n );
JMF 12:0071cb144c7a 329 mbedtls_free( buf );
JMF 12:0071cb144c7a 330
JMF 12:0071cb144c7a 331 return( ret );
JMF 12:0071cb144c7a 332 }
JMF 12:0071cb144c7a 333 #endif /* MBEDTLS_FS_IO */
JMF 12:0071cb144c7a 334
JMF 12:0071cb144c7a 335 #define BEFORE_COLON 14
JMF 12:0071cb144c7a 336 #define BC "14"
JMF 12:0071cb144c7a 337 /*
JMF 12:0071cb144c7a 338 * Return an informational string about the CSR.
JMF 12:0071cb144c7a 339 */
JMF 12:0071cb144c7a 340 int mbedtls_x509_csr_info( char *buf, size_t size, const char *prefix,
JMF 12:0071cb144c7a 341 const mbedtls_x509_csr *csr )
JMF 12:0071cb144c7a 342 {
JMF 12:0071cb144c7a 343 int ret;
JMF 12:0071cb144c7a 344 size_t n;
JMF 12:0071cb144c7a 345 char *p;
JMF 12:0071cb144c7a 346 char key_size_str[BEFORE_COLON];
JMF 12:0071cb144c7a 347
JMF 12:0071cb144c7a 348 p = buf;
JMF 12:0071cb144c7a 349 n = size;
JMF 12:0071cb144c7a 350
JMF 12:0071cb144c7a 351 ret = mbedtls_snprintf( p, n, "%sCSR version : %d",
JMF 12:0071cb144c7a 352 prefix, csr->version );
JMF 12:0071cb144c7a 353 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 354
JMF 12:0071cb144c7a 355 ret = mbedtls_snprintf( p, n, "\n%ssubject name : ", prefix );
JMF 12:0071cb144c7a 356 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 357 ret = mbedtls_x509_dn_gets( p, n, &csr->subject );
JMF 12:0071cb144c7a 358 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 359
JMF 12:0071cb144c7a 360 ret = mbedtls_snprintf( p, n, "\n%ssigned using : ", prefix );
JMF 12:0071cb144c7a 361 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 362
JMF 12:0071cb144c7a 363 ret = mbedtls_x509_sig_alg_gets( p, n, &csr->sig_oid, csr->sig_pk, csr->sig_md,
JMF 12:0071cb144c7a 364 csr->sig_opts );
JMF 12:0071cb144c7a 365 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 366
JMF 12:0071cb144c7a 367 if( ( ret = mbedtls_x509_key_size_helper( key_size_str, BEFORE_COLON,
JMF 12:0071cb144c7a 368 mbedtls_pk_get_name( &csr->pk ) ) ) != 0 )
JMF 12:0071cb144c7a 369 {
JMF 12:0071cb144c7a 370 return( ret );
JMF 12:0071cb144c7a 371 }
JMF 12:0071cb144c7a 372
JMF 12:0071cb144c7a 373 ret = mbedtls_snprintf( p, n, "\n%s%-" BC "s: %d bits\n", prefix, key_size_str,
JMF 12:0071cb144c7a 374 (int) mbedtls_pk_get_bitlen( &csr->pk ) );
JMF 12:0071cb144c7a 375 MBEDTLS_X509_SAFE_SNPRINTF;
JMF 12:0071cb144c7a 376
JMF 12:0071cb144c7a 377 return( (int) ( size - n ) );
JMF 12:0071cb144c7a 378 }
JMF 12:0071cb144c7a 379
JMF 12:0071cb144c7a 380 /*
JMF 12:0071cb144c7a 381 * Initialize a CSR
JMF 12:0071cb144c7a 382 */
JMF 12:0071cb144c7a 383 void mbedtls_x509_csr_init( mbedtls_x509_csr *csr )
JMF 12:0071cb144c7a 384 {
JMF 12:0071cb144c7a 385 memset( csr, 0, sizeof(mbedtls_x509_csr) );
JMF 12:0071cb144c7a 386 }
JMF 12:0071cb144c7a 387
JMF 12:0071cb144c7a 388 /*
JMF 12:0071cb144c7a 389 * Unallocate all CSR data
JMF 12:0071cb144c7a 390 */
JMF 12:0071cb144c7a 391 void mbedtls_x509_csr_free( mbedtls_x509_csr *csr )
JMF 12:0071cb144c7a 392 {
JMF 12:0071cb144c7a 393 mbedtls_x509_name *name_cur;
JMF 12:0071cb144c7a 394 mbedtls_x509_name *name_prv;
JMF 12:0071cb144c7a 395
JMF 12:0071cb144c7a 396 if( csr == NULL )
JMF 12:0071cb144c7a 397 return;
JMF 12:0071cb144c7a 398
JMF 12:0071cb144c7a 399 mbedtls_pk_free( &csr->pk );
JMF 12:0071cb144c7a 400
JMF 12:0071cb144c7a 401 #if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
JMF 12:0071cb144c7a 402 mbedtls_free( csr->sig_opts );
JMF 12:0071cb144c7a 403 #endif
JMF 12:0071cb144c7a 404
JMF 12:0071cb144c7a 405 name_cur = csr->subject.next;
JMF 12:0071cb144c7a 406 while( name_cur != NULL )
JMF 12:0071cb144c7a 407 {
JMF 12:0071cb144c7a 408 name_prv = name_cur;
JMF 12:0071cb144c7a 409 name_cur = name_cur->next;
JMF 12:0071cb144c7a 410 mbedtls_zeroize( name_prv, sizeof( mbedtls_x509_name ) );
JMF 12:0071cb144c7a 411 mbedtls_free( name_prv );
JMF 12:0071cb144c7a 412 }
JMF 12:0071cb144c7a 413
JMF 12:0071cb144c7a 414 if( csr->raw.p != NULL )
JMF 12:0071cb144c7a 415 {
JMF 12:0071cb144c7a 416 mbedtls_zeroize( csr->raw.p, csr->raw.len );
JMF 12:0071cb144c7a 417 mbedtls_free( csr->raw.p );
JMF 12:0071cb144c7a 418 }
JMF 12:0071cb144c7a 419
JMF 12:0071cb144c7a 420 mbedtls_zeroize( csr, sizeof( mbedtls_x509_csr ) );
JMF 12:0071cb144c7a 421 }
JMF 12:0071cb144c7a 422
JMF 12:0071cb144c7a 423 #endif /* MBEDTLS_X509_CSR_PARSE_C */