erkin yucel / mbed-os

mbed os with nrf51 internal bandgap enabled to read battery level

Dependents:   BLE_file_test BLE_Blink ExternalEncoder

features/mbedtls/src/x509_csr.c@0:f269e3021894, 2016-10-23 (annotated)

Committer:
elessair
Date:
Sun Oct 23 15:10:02 2016 +0000
Revision:
0:f269e3021894
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elessair 0:f269e3021894 1 /*
elessair 0:f269e3021894 2 * X.509 Certificate Signing Request (CSR) parsing
elessair 0:f269e3021894 3 *
elessair 0:f269e3021894 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
elessair 0:f269e3021894 5 * SPDX-License-Identifier: Apache-2.0
elessair 0:f269e3021894 6 *
elessair 0:f269e3021894 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
elessair 0:f269e3021894 8 * not use this file except in compliance with the License.
elessair 0:f269e3021894 9 * You may obtain a copy of the License at
elessair 0:f269e3021894 10 *
elessair 0:f269e3021894 11 * http://www.apache.org/licenses/LICENSE-2.0
elessair 0:f269e3021894 12 *
elessair 0:f269e3021894 13 * Unless required by applicable law or agreed to in writing, software
elessair 0:f269e3021894 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
elessair 0:f269e3021894 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elessair 0:f269e3021894 16 * See the License for the specific language governing permissions and
elessair 0:f269e3021894 17 * limitations under the License.
elessair 0:f269e3021894 18 *
elessair 0:f269e3021894 19 * This file is part of mbed TLS (https://tls.mbed.org)
elessair 0:f269e3021894 20 */
elessair 0:f269e3021894 21 /*
elessair 0:f269e3021894 22 * The ITU-T X.509 standard defines a certificate format for PKI.
elessair 0:f269e3021894 23 *
elessair 0:f269e3021894 24 * http://www.ietf.org/rfc/rfc5280.txt (Certificates and CRLs)
elessair 0:f269e3021894 25 * http://www.ietf.org/rfc/rfc3279.txt (Alg IDs for CRLs)
elessair 0:f269e3021894 26 * http://www.ietf.org/rfc/rfc2986.txt (CSRs, aka PKCS#10)
elessair 0:f269e3021894 27 *
elessair 0:f269e3021894 28 * http://www.itu.int/ITU-T/studygroups/com17/languages/X.680-0207.pdf
elessair 0:f269e3021894 29 * http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf
elessair 0:f269e3021894 30 */
elessair 0:f269e3021894 31
elessair 0:f269e3021894 32 #if !defined(MBEDTLS_CONFIG_FILE)
elessair 0:f269e3021894 33 #include "mbedtls/config.h"
elessair 0:f269e3021894 34 #else
elessair 0:f269e3021894 35 #include MBEDTLS_CONFIG_FILE
elessair 0:f269e3021894 36 #endif
elessair 0:f269e3021894 37
elessair 0:f269e3021894 38 #if defined(MBEDTLS_X509_CSR_PARSE_C)
elessair 0:f269e3021894 39
elessair 0:f269e3021894 40 #include "mbedtls/x509_csr.h"
elessair 0:f269e3021894 41 #include "mbedtls/oid.h"
elessair 0:f269e3021894 42
elessair 0:f269e3021894 43 #include <string.h>
elessair 0:f269e3021894 44
elessair 0:f269e3021894 45 #if defined(MBEDTLS_PEM_PARSE_C)
elessair 0:f269e3021894 46 #include "mbedtls/pem.h"
elessair 0:f269e3021894 47 #endif
elessair 0:f269e3021894 48
elessair 0:f269e3021894 49 #if defined(MBEDTLS_PLATFORM_C)
elessair 0:f269e3021894 50 #include "mbedtls/platform.h"
elessair 0:f269e3021894 51 #else
elessair 0:f269e3021894 52 #include <stdlib.h>
elessair 0:f269e3021894 53 #include <stdio.h>
elessair 0:f269e3021894 54 #define mbedtls_free free
elessair 0:f269e3021894 55 #define mbedtls_calloc calloc
elessair 0:f269e3021894 56 #define mbedtls_snprintf snprintf
elessair 0:f269e3021894 57 #endif
elessair 0:f269e3021894 58
elessair 0:f269e3021894 59 #if defined(MBEDTLS_FS_IO) || defined(EFIX64) || defined(EFI32)
elessair 0:f269e3021894 60 #include <stdio.h>
elessair 0:f269e3021894 61 #endif
elessair 0:f269e3021894 62
elessair 0:f269e3021894 63 /* Implementation that should never be optimized out by the compiler */
elessair 0:f269e3021894 64 static void mbedtls_zeroize( void *v, size_t n ) {
elessair 0:f269e3021894 65 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
elessair 0:f269e3021894 66 }
elessair 0:f269e3021894 67
elessair 0:f269e3021894 68 /*
elessair 0:f269e3021894 69 * Version ::= INTEGER { v1(0) }
elessair 0:f269e3021894 70 */
elessair 0:f269e3021894 71 static int x509_csr_get_version( unsigned char **p,
elessair 0:f269e3021894 72 const unsigned char *end,
elessair 0:f269e3021894 73 int *ver )
elessair 0:f269e3021894 74 {
elessair 0:f269e3021894 75 int ret;
elessair 0:f269e3021894 76
elessair 0:f269e3021894 77 if( ( ret = mbedtls_asn1_get_int( p, end, ver ) ) != 0 )
elessair 0:f269e3021894 78 {
elessair 0:f269e3021894 79 if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
elessair 0:f269e3021894 80 {
elessair 0:f269e3021894 81 *ver = 0;
elessair 0:f269e3021894 82 return( 0 );
elessair 0:f269e3021894 83 }
elessair 0:f269e3021894 84
elessair 0:f269e3021894 85 return( MBEDTLS_ERR_X509_INVALID_VERSION + ret );
elessair 0:f269e3021894 86 }
elessair 0:f269e3021894 87
elessair 0:f269e3021894 88 return( 0 );
elessair 0:f269e3021894 89 }
elessair 0:f269e3021894 90
elessair 0:f269e3021894 91 /*
elessair 0:f269e3021894 92 * Parse a CSR in DER format
elessair 0:f269e3021894 93 */
elessair 0:f269e3021894 94 int mbedtls_x509_csr_parse_der( mbedtls_x509_csr *csr,
elessair 0:f269e3021894 95 const unsigned char *buf, size_t buflen )
elessair 0:f269e3021894 96 {
elessair 0:f269e3021894 97 int ret;
elessair 0:f269e3021894 98 size_t len;
elessair 0:f269e3021894 99 unsigned char *p, *end;
elessair 0:f269e3021894 100 mbedtls_x509_buf sig_params;
elessair 0:f269e3021894 101
elessair 0:f269e3021894 102 memset( &sig_params, 0, sizeof( mbedtls_x509_buf ) );
elessair 0:f269e3021894 103
elessair 0:f269e3021894 104 /*
elessair 0:f269e3021894 105 * Check for valid input
elessair 0:f269e3021894 106 */
elessair 0:f269e3021894 107 if( csr == NULL || buf == NULL || buflen == 0 )
elessair 0:f269e3021894 108 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
elessair 0:f269e3021894 109
elessair 0:f269e3021894 110 mbedtls_x509_csr_init( csr );
elessair 0:f269e3021894 111
elessair 0:f269e3021894 112 /*
elessair 0:f269e3021894 113 * first copy the raw DER data
elessair 0:f269e3021894 114 */
elessair 0:f269e3021894 115 p = mbedtls_calloc( 1, len = buflen );
elessair 0:f269e3021894 116
elessair 0:f269e3021894 117 if( p == NULL )
elessair 0:f269e3021894 118 return( MBEDTLS_ERR_X509_ALLOC_FAILED );
elessair 0:f269e3021894 119
elessair 0:f269e3021894 120 memcpy( p, buf, buflen );
elessair 0:f269e3021894 121
elessair 0:f269e3021894 122 csr->raw.p = p;
elessair 0:f269e3021894 123 csr->raw.len = len;
elessair 0:f269e3021894 124 end = p + len;
elessair 0:f269e3021894 125
elessair 0:f269e3021894 126 /*
elessair 0:f269e3021894 127 * CertificationRequest ::= SEQUENCE {
elessair 0:f269e3021894 128 * certificationRequestInfo CertificationRequestInfo,
elessair 0:f269e3021894 129 * signatureAlgorithm AlgorithmIdentifier,
elessair 0:f269e3021894 130 * signature BIT STRING
elessair 0:f269e3021894 131 * }
elessair 0:f269e3021894 132 */
elessair 0:f269e3021894 133 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
elessair 0:f269e3021894 134 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
elessair 0:f269e3021894 135 {
elessair 0:f269e3021894 136 mbedtls_x509_csr_free( csr );
elessair 0:f269e3021894 137 return( MBEDTLS_ERR_X509_INVALID_FORMAT );
elessair 0:f269e3021894 138 }
elessair 0:f269e3021894 139
elessair 0:f269e3021894 140 if( len != (size_t) ( end - p ) )
elessair 0:f269e3021894 141 {
elessair 0:f269e3021894 142 mbedtls_x509_csr_free( csr );
elessair 0:f269e3021894 143 return( MBEDTLS_ERR_X509_INVALID_FORMAT +
elessair 0:f269e3021894 144 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
elessair 0:f269e3021894 145 }
elessair 0:f269e3021894 146
elessair 0:f269e3021894 147 /*
elessair 0:f269e3021894 148 * CertificationRequestInfo ::= SEQUENCE {
elessair 0:f269e3021894 149 */
elessair 0:f269e3021894 150 csr->cri.p = p;
elessair 0:f269e3021894 151
elessair 0:f269e3021894 152 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
elessair 0:f269e3021894 153 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
elessair 0:f269e3021894 154 {
elessair 0:f269e3021894 155 mbedtls_x509_csr_free( csr );
elessair 0:f269e3021894 156 return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
elessair 0:f269e3021894 157 }
elessair 0:f269e3021894 158
elessair 0:f269e3021894 159 end = p + len;
elessair 0:f269e3021894 160 csr->cri.len = end - csr->cri.p;
elessair 0:f269e3021894 161
elessair 0:f269e3021894 162 /*
elessair 0:f269e3021894 163 * Version ::= INTEGER { v1(0) }
elessair 0:f269e3021894 164 */
elessair 0:f269e3021894 165 if( ( ret = x509_csr_get_version( &p, end, &csr->version ) ) != 0 )
elessair 0:f269e3021894 166 {
elessair 0:f269e3021894 167 mbedtls_x509_csr_free( csr );
elessair 0:f269e3021894 168 return( ret );
elessair 0:f269e3021894 169 }
elessair 0:f269e3021894 170
elessair 0:f269e3021894 171 csr->version++;
elessair 0:f269e3021894 172
elessair 0:f269e3021894 173 if( csr->version != 1 )
elessair 0:f269e3021894 174 {
elessair 0:f269e3021894 175 mbedtls_x509_csr_free( csr );
elessair 0:f269e3021894 176 return( MBEDTLS_ERR_X509_UNKNOWN_VERSION );
elessair 0:f269e3021894 177 }
elessair 0:f269e3021894 178
elessair 0:f269e3021894 179 /*
elessair 0:f269e3021894 180 * subject Name
elessair 0:f269e3021894 181 */
elessair 0:f269e3021894 182 csr->subject_raw.p = p;
elessair 0:f269e3021894 183
elessair 0:f269e3021894 184 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
elessair 0:f269e3021894 185 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
elessair 0:f269e3021894 186 {
elessair 0:f269e3021894 187 mbedtls_x509_csr_free( csr );
elessair 0:f269e3021894 188 return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
elessair 0:f269e3021894 189 }
elessair 0:f269e3021894 190
elessair 0:f269e3021894 191 if( ( ret = mbedtls_x509_get_name( &p, p + len, &csr->subject ) ) != 0 )
elessair 0:f269e3021894 192 {
elessair 0:f269e3021894 193 mbedtls_x509_csr_free( csr );
elessair 0:f269e3021894 194 return( ret );
elessair 0:f269e3021894 195 }
elessair 0:f269e3021894 196
elessair 0:f269e3021894 197 csr->subject_raw.len = p - csr->subject_raw.p;
elessair 0:f269e3021894 198
elessair 0:f269e3021894 199 /*
elessair 0:f269e3021894 200 * subjectPKInfo SubjectPublicKeyInfo
elessair 0:f269e3021894 201 */
elessair 0:f269e3021894 202 if( ( ret = mbedtls_pk_parse_subpubkey( &p, end, &csr->pk ) ) != 0 )
elessair 0:f269e3021894 203 {
elessair 0:f269e3021894 204 mbedtls_x509_csr_free( csr );
elessair 0:f269e3021894 205 return( ret );
elessair 0:f269e3021894 206 }
elessair 0:f269e3021894 207
elessair 0:f269e3021894 208 /*
elessair 0:f269e3021894 209 * attributes [0] Attributes
elessair 0:f269e3021894 210 *
elessair 0:f269e3021894 211 * The list of possible attributes is open-ended, though RFC 2985
elessair 0:f269e3021894 212 * (PKCS#9) defines a few in section 5.4. We currently don't support any,
elessair 0:f269e3021894 213 * so we just ignore them. This is a safe thing to do as the worst thing
elessair 0:f269e3021894 214 * that could happen is that we issue a certificate that does not match
elessair 0:f269e3021894 215 * the requester's expectations - this cannot cause a violation of our
elessair 0:f269e3021894 216 * signature policies.
elessair 0:f269e3021894 217 */
elessair 0:f269e3021894 218 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
elessair 0:f269e3021894 219 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_CONTEXT_SPECIFIC ) ) != 0 )
elessair 0:f269e3021894 220 {
elessair 0:f269e3021894 221 mbedtls_x509_csr_free( csr );
elessair 0:f269e3021894 222 return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
elessair 0:f269e3021894 223 }
elessair 0:f269e3021894 224
elessair 0:f269e3021894 225 p += len;
elessair 0:f269e3021894 226
elessair 0:f269e3021894 227 end = csr->raw.p + csr->raw.len;
elessair 0:f269e3021894 228
elessair 0:f269e3021894 229 /*
elessair 0:f269e3021894 230 * signatureAlgorithm AlgorithmIdentifier,
elessair 0:f269e3021894 231 * signature BIT STRING
elessair 0:f269e3021894 232 */
elessair 0:f269e3021894 233 if( ( ret = mbedtls_x509_get_alg( &p, end, &csr->sig_oid, &sig_params ) ) != 0 )
elessair 0:f269e3021894 234 {
elessair 0:f269e3021894 235 mbedtls_x509_csr_free( csr );
elessair 0:f269e3021894 236 return( ret );
elessair 0:f269e3021894 237 }
elessair 0:f269e3021894 238
elessair 0:f269e3021894 239 if( ( ret = mbedtls_x509_get_sig_alg( &csr->sig_oid, &sig_params,
elessair 0:f269e3021894 240 &csr->sig_md, &csr->sig_pk,
elessair 0:f269e3021894 241 &csr->sig_opts ) ) != 0 )
elessair 0:f269e3021894 242 {
elessair 0:f269e3021894 243 mbedtls_x509_csr_free( csr );
elessair 0:f269e3021894 244 return( MBEDTLS_ERR_X509_UNKNOWN_SIG_ALG );
elessair 0:f269e3021894 245 }
elessair 0:f269e3021894 246
elessair 0:f269e3021894 247 if( ( ret = mbedtls_x509_get_sig( &p, end, &csr->sig ) ) != 0 )
elessair 0:f269e3021894 248 {
elessair 0:f269e3021894 249 mbedtls_x509_csr_free( csr );
elessair 0:f269e3021894 250 return( ret );
elessair 0:f269e3021894 251 }
elessair 0:f269e3021894 252
elessair 0:f269e3021894 253 if( p != end )
elessair 0:f269e3021894 254 {
elessair 0:f269e3021894 255 mbedtls_x509_csr_free( csr );
elessair 0:f269e3021894 256 return( MBEDTLS_ERR_X509_INVALID_FORMAT +
elessair 0:f269e3021894 257 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
elessair 0:f269e3021894 258 }
elessair 0:f269e3021894 259
elessair 0:f269e3021894 260 return( 0 );
elessair 0:f269e3021894 261 }
elessair 0:f269e3021894 262
elessair 0:f269e3021894 263 /*
elessair 0:f269e3021894 264 * Parse a CSR, allowing for PEM or raw DER encoding
elessair 0:f269e3021894 265 */
elessair 0:f269e3021894 266 int mbedtls_x509_csr_parse( mbedtls_x509_csr *csr, const unsigned char *buf, size_t buflen )
elessair 0:f269e3021894 267 {
elessair 0:f269e3021894 268 int ret;
elessair 0:f269e3021894 269 #if defined(MBEDTLS_PEM_PARSE_C)
elessair 0:f269e3021894 270 size_t use_len;
elessair 0:f269e3021894 271 mbedtls_pem_context pem;
elessair 0:f269e3021894 272 #endif
elessair 0:f269e3021894 273
elessair 0:f269e3021894 274 /*
elessair 0:f269e3021894 275 * Check for valid input
elessair 0:f269e3021894 276 */
elessair 0:f269e3021894 277 if( csr == NULL || buf == NULL || buflen == 0 )
elessair 0:f269e3021894 278 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
elessair 0:f269e3021894 279
elessair 0:f269e3021894 280 #if defined(MBEDTLS_PEM_PARSE_C)
elessair 0:f269e3021894 281 mbedtls_pem_init( &pem );
elessair 0:f269e3021894 282
elessair 0:f269e3021894 283 /* Avoid calling mbedtls_pem_read_buffer() on non-null-terminated string */
elessair 0:f269e3021894 284 if( buf[buflen - 1] != '\0' )
elessair 0:f269e3021894 285 ret = MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT;
elessair 0:f269e3021894 286 else
elessair 0:f269e3021894 287 ret = mbedtls_pem_read_buffer( &pem,
elessair 0:f269e3021894 288 "-----BEGIN CERTIFICATE REQUEST-----",
elessair 0:f269e3021894 289 "-----END CERTIFICATE REQUEST-----",
elessair 0:f269e3021894 290 buf, NULL, 0, &use_len );
elessair 0:f269e3021894 291
elessair 0:f269e3021894 292 if( ret == 0 )
elessair 0:f269e3021894 293 {
elessair 0:f269e3021894 294 /*
elessair 0:f269e3021894 295 * Was PEM encoded, parse the result
elessair 0:f269e3021894 296 */
elessair 0:f269e3021894 297 if( ( ret = mbedtls_x509_csr_parse_der( csr, pem.buf, pem.buflen ) ) != 0 )
elessair 0:f269e3021894 298 return( ret );
elessair 0:f269e3021894 299
elessair 0:f269e3021894 300 mbedtls_pem_free( &pem );
elessair 0:f269e3021894 301 return( 0 );
elessair 0:f269e3021894 302 }
elessair 0:f269e3021894 303 else if( ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
elessair 0:f269e3021894 304 {
elessair 0:f269e3021894 305 mbedtls_pem_free( &pem );
elessair 0:f269e3021894 306 return( ret );
elessair 0:f269e3021894 307 }
elessair 0:f269e3021894 308 else
elessair 0:f269e3021894 309 #endif /* MBEDTLS_PEM_PARSE_C */
elessair 0:f269e3021894 310 return( mbedtls_x509_csr_parse_der( csr, buf, buflen ) );
elessair 0:f269e3021894 311 }
elessair 0:f269e3021894 312
elessair 0:f269e3021894 313 #if defined(MBEDTLS_FS_IO)
elessair 0:f269e3021894 314 /*
elessair 0:f269e3021894 315 * Load a CSR into the structure
elessair 0:f269e3021894 316 */
elessair 0:f269e3021894 317 int mbedtls_x509_csr_parse_file( mbedtls_x509_csr *csr, const char *path )
elessair 0:f269e3021894 318 {
elessair 0:f269e3021894 319 int ret;
elessair 0:f269e3021894 320 size_t n;
elessair 0:f269e3021894 321 unsigned char *buf;
elessair 0:f269e3021894 322
elessair 0:f269e3021894 323 if( ( ret = mbedtls_pk_load_file( path, &buf, &n ) ) != 0 )
elessair 0:f269e3021894 324 return( ret );
elessair 0:f269e3021894 325
elessair 0:f269e3021894 326 ret = mbedtls_x509_csr_parse( csr, buf, n );
elessair 0:f269e3021894 327
elessair 0:f269e3021894 328 mbedtls_zeroize( buf, n );
elessair 0:f269e3021894 329 mbedtls_free( buf );
elessair 0:f269e3021894 330
elessair 0:f269e3021894 331 return( ret );
elessair 0:f269e3021894 332 }
elessair 0:f269e3021894 333 #endif /* MBEDTLS_FS_IO */
elessair 0:f269e3021894 334
elessair 0:f269e3021894 335 #define BEFORE_COLON 14
elessair 0:f269e3021894 336 #define BC "14"
elessair 0:f269e3021894 337 /*
elessair 0:f269e3021894 338 * Return an informational string about the CSR.
elessair 0:f269e3021894 339 */
elessair 0:f269e3021894 340 int mbedtls_x509_csr_info( char *buf, size_t size, const char *prefix,
elessair 0:f269e3021894 341 const mbedtls_x509_csr *csr )
elessair 0:f269e3021894 342 {
elessair 0:f269e3021894 343 int ret;
elessair 0:f269e3021894 344 size_t n;
elessair 0:f269e3021894 345 char *p;
elessair 0:f269e3021894 346 char key_size_str[BEFORE_COLON];
elessair 0:f269e3021894 347
elessair 0:f269e3021894 348 p = buf;
elessair 0:f269e3021894 349 n = size;
elessair 0:f269e3021894 350
elessair 0:f269e3021894 351 ret = mbedtls_snprintf( p, n, "%sCSR version : %d",
elessair 0:f269e3021894 352 prefix, csr->version );
elessair 0:f269e3021894 353 MBEDTLS_X509_SAFE_SNPRINTF;
elessair 0:f269e3021894 354
elessair 0:f269e3021894 355 ret = mbedtls_snprintf( p, n, "\n%ssubject name : ", prefix );
elessair 0:f269e3021894 356 MBEDTLS_X509_SAFE_SNPRINTF;
elessair 0:f269e3021894 357 ret = mbedtls_x509_dn_gets( p, n, &csr->subject );
elessair 0:f269e3021894 358 MBEDTLS_X509_SAFE_SNPRINTF;
elessair 0:f269e3021894 359
elessair 0:f269e3021894 360 ret = mbedtls_snprintf( p, n, "\n%ssigned using : ", prefix );
elessair 0:f269e3021894 361 MBEDTLS_X509_SAFE_SNPRINTF;
elessair 0:f269e3021894 362
elessair 0:f269e3021894 363 ret = mbedtls_x509_sig_alg_gets( p, n, &csr->sig_oid, csr->sig_pk, csr->sig_md,
elessair 0:f269e3021894 364 csr->sig_opts );
elessair 0:f269e3021894 365 MBEDTLS_X509_SAFE_SNPRINTF;
elessair 0:f269e3021894 366
elessair 0:f269e3021894 367 if( ( ret = mbedtls_x509_key_size_helper( key_size_str, BEFORE_COLON,
elessair 0:f269e3021894 368 mbedtls_pk_get_name( &csr->pk ) ) ) != 0 )
elessair 0:f269e3021894 369 {
elessair 0:f269e3021894 370 return( ret );
elessair 0:f269e3021894 371 }
elessair 0:f269e3021894 372
elessair 0:f269e3021894 373 ret = mbedtls_snprintf( p, n, "\n%s%-" BC "s: %d bits\n", prefix, key_size_str,
elessair 0:f269e3021894 374 (int) mbedtls_pk_get_bitlen( &csr->pk ) );
elessair 0:f269e3021894 375 MBEDTLS_X509_SAFE_SNPRINTF;
elessair 0:f269e3021894 376
elessair 0:f269e3021894 377 return( (int) ( size - n ) );
elessair 0:f269e3021894 378 }
elessair 0:f269e3021894 379
elessair 0:f269e3021894 380 /*
elessair 0:f269e3021894 381 * Initialize a CSR
elessair 0:f269e3021894 382 */
elessair 0:f269e3021894 383 void mbedtls_x509_csr_init( mbedtls_x509_csr *csr )
elessair 0:f269e3021894 384 {
elessair 0:f269e3021894 385 memset( csr, 0, sizeof(mbedtls_x509_csr) );
elessair 0:f269e3021894 386 }
elessair 0:f269e3021894 387
elessair 0:f269e3021894 388 /*
elessair 0:f269e3021894 389 * Unallocate all CSR data
elessair 0:f269e3021894 390 */
elessair 0:f269e3021894 391 void mbedtls_x509_csr_free( mbedtls_x509_csr *csr )
elessair 0:f269e3021894 392 {
elessair 0:f269e3021894 393 mbedtls_x509_name *name_cur;
elessair 0:f269e3021894 394 mbedtls_x509_name *name_prv;
elessair 0:f269e3021894 395
elessair 0:f269e3021894 396 if( csr == NULL )
elessair 0:f269e3021894 397 return;
elessair 0:f269e3021894 398
elessair 0:f269e3021894 399 mbedtls_pk_free( &csr->pk );
elessair 0:f269e3021894 400
elessair 0:f269e3021894 401 #if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
elessair 0:f269e3021894 402 mbedtls_free( csr->sig_opts );
elessair 0:f269e3021894 403 #endif
elessair 0:f269e3021894 404
elessair 0:f269e3021894 405 name_cur = csr->subject.next;
elessair 0:f269e3021894 406 while( name_cur != NULL )
elessair 0:f269e3021894 407 {
elessair 0:f269e3021894 408 name_prv = name_cur;
elessair 0:f269e3021894 409 name_cur = name_cur->next;
elessair 0:f269e3021894 410 mbedtls_zeroize( name_prv, sizeof( mbedtls_x509_name ) );
elessair 0:f269e3021894 411 mbedtls_free( name_prv );
elessair 0:f269e3021894 412 }
elessair 0:f269e3021894 413
elessair 0:f269e3021894 414 if( csr->raw.p != NULL )
elessair 0:f269e3021894 415 {
elessair 0:f269e3021894 416 mbedtls_zeroize( csr->raw.p, csr->raw.len );
elessair 0:f269e3021894 417 mbedtls_free( csr->raw.p );
elessair 0:f269e3021894 418 }
elessair 0:f269e3021894 419
elessair 0:f269e3021894 420 mbedtls_zeroize( csr, sizeof( mbedtls_x509_csr ) );
elessair 0:f269e3021894 421 }
elessair 0:f269e3021894 422
elessair 0:f269e3021894 423 #endif /* MBEDTLS_X509_CSR_PARSE_C */