2 * X.509 common functions for parsing and verification
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4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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5 * SPDX-License-Identifier: Apache-2.0
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7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
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8 * not use this file except in compliance with the License.
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9 * You may obtain a copy of the License at
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11 * http://www.apache.org/licenses/LICENSE-2.0
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13 * Unless required by applicable law or agreed to in writing, software
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14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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16 * See the License for the specific language governing permissions and
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17 * limitations under the License.
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19 * This file is part of mbed TLS (https://tls.mbed.org)
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22 * The ITU-T X.509 standard defines a certificate format for PKI.
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24 * http://www.ietf.org/rfc/rfc5280.txt (Certificates and CRLs)
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25 * http://www.ietf.org/rfc/rfc3279.txt (Alg IDs for CRLs)
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26 * http://www.ietf.org/rfc/rfc2986.txt (CSRs, aka PKCS#10)
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28 * http://www.itu.int/ITU-T/studygroups/com17/languages/X.680-0207.pdf
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29 * http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf
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32 #if !defined(MBEDTLS_CONFIG_FILE)
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33 #include "mbedtls/config.h"
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35 #include MBEDTLS_CONFIG_FILE
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38 #if defined(MBEDTLS_X509_USE_C)
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40 #include "mbedtls/x509.h"
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41 #include "mbedtls/asn1.h"
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42 #include "mbedtls/oid.h"
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47 #if defined(MBEDTLS_PEM_PARSE_C)
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48 #include "mbedtls/pem.h"
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51 #if defined(MBEDTLS_PLATFORM_C)
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52 #include "mbedtls/platform.h"
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56 #define mbedtls_free free
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57 #define mbedtls_calloc calloc
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58 #define mbedtls_printf printf
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59 #define mbedtls_snprintf snprintf
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62 #if defined(MBEDTLS_HAVE_TIME)
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63 #include "mbedtls/platform_time.h"
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65 #if defined(MBEDTLS_HAVE_TIME_DATE)
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66 #include "mbedtls/platform_util.h"
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70 #define CHECK(code) if( ( ret = ( code ) ) != 0 ){ return( ret ); }
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71 #define CHECK_RANGE(min, max, val) \
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74 if( ( val ) < ( min ) || ( val ) > ( max ) ) \
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81 * CertificateSerialNumber ::= INTEGER
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83 int mbedtls_x509_get_serial( unsigned char **p, const unsigned char *end,
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84 mbedtls_x509_buf *serial )
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88 if( ( end - *p ) < 1 )
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89 return( MBEDTLS_ERR_X509_INVALID_SERIAL +
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90 MBEDTLS_ERR_ASN1_OUT_OF_DATA );
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92 if( **p != ( MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_PRIMITIVE | 2 ) &&
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93 **p != MBEDTLS_ASN1_INTEGER )
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94 return( MBEDTLS_ERR_X509_INVALID_SERIAL +
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95 MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
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97 serial->tag = *(*p)++;
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99 if( ( ret = mbedtls_asn1_get_len( p, end, &serial->len ) ) != 0 )
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100 return( MBEDTLS_ERR_X509_INVALID_SERIAL + ret );
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108 /* Get an algorithm identifier without parameters (eg for signatures)
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110 * AlgorithmIdentifier ::= SEQUENCE {
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111 * algorithm OBJECT IDENTIFIER,
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112 * parameters ANY DEFINED BY algorithm OPTIONAL }
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114 int mbedtls_x509_get_alg_null( unsigned char **p, const unsigned char *end,
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115 mbedtls_x509_buf *alg )
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119 if( ( ret = mbedtls_asn1_get_alg_null( p, end, alg ) ) != 0 )
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120 return( MBEDTLS_ERR_X509_INVALID_ALG + ret );
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126 * Parse an algorithm identifier with (optional) parameters
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128 int mbedtls_x509_get_alg( unsigned char **p, const unsigned char *end,
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129 mbedtls_x509_buf *alg, mbedtls_x509_buf *params )
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133 if( ( ret = mbedtls_asn1_get_alg( p, end, alg, params ) ) != 0 )
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134 return( MBEDTLS_ERR_X509_INVALID_ALG + ret );
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139 #if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
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141 * HashAlgorithm ::= AlgorithmIdentifier
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143 * AlgorithmIdentifier ::= SEQUENCE {
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144 * algorithm OBJECT IDENTIFIER,
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145 * parameters ANY DEFINED BY algorithm OPTIONAL }
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147 * For HashAlgorithm, parameters MUST be NULL or absent.
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149 static int x509_get_hash_alg( const mbedtls_x509_buf *alg, mbedtls_md_type_t *md_alg )
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153 const unsigned char *end;
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154 mbedtls_x509_buf md_oid;
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157 /* Make sure we got a SEQUENCE and setup bounds */
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158 if( alg->tag != ( MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) )
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159 return( MBEDTLS_ERR_X509_INVALID_ALG +
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160 MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
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162 p = (unsigned char *) alg->p;
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163 end = p + alg->len;
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166 return( MBEDTLS_ERR_X509_INVALID_ALG +
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167 MBEDTLS_ERR_ASN1_OUT_OF_DATA );
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172 if( ( ret = mbedtls_asn1_get_tag( &p, end, &md_oid.len, MBEDTLS_ASN1_OID ) ) != 0 )
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173 return( MBEDTLS_ERR_X509_INVALID_ALG + ret );
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178 /* Get md_alg from md_oid */
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179 if( ( ret = mbedtls_oid_get_md_alg( &md_oid, md_alg ) ) != 0 )
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180 return( MBEDTLS_ERR_X509_INVALID_ALG + ret );
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182 /* Make sure params is absent of NULL */
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186 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len, MBEDTLS_ASN1_NULL ) ) != 0 || len != 0 )
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187 return( MBEDTLS_ERR_X509_INVALID_ALG + ret );
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190 return( MBEDTLS_ERR_X509_INVALID_ALG +
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191 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
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197 * RSASSA-PSS-params ::= SEQUENCE {
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198 * hashAlgorithm [0] HashAlgorithm DEFAULT sha1Identifier,
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199 * maskGenAlgorithm [1] MaskGenAlgorithm DEFAULT mgf1SHA1Identifier,
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200 * saltLength [2] INTEGER DEFAULT 20,
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201 * trailerField [3] INTEGER DEFAULT 1 }
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202 * -- Note that the tags in this Sequence are explicit.
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204 * RFC 4055 (which defines use of RSASSA-PSS in PKIX) states that the value
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205 * of trailerField MUST be 1, and PKCS#1 v2.2 doesn't even define any other
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206 * option. Enfore this at parsing time.
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208 int mbedtls_x509_get_rsassa_pss_params( const mbedtls_x509_buf *params,
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209 mbedtls_md_type_t *md_alg, mbedtls_md_type_t *mgf_md,
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214 const unsigned char *end, *end2;
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216 mbedtls_x509_buf alg_id, alg_params;
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218 /* First set everything to defaults */
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219 *md_alg = MBEDTLS_MD_SHA1;
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220 *mgf_md = MBEDTLS_MD_SHA1;
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223 /* Make sure params is a SEQUENCE and setup bounds */
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224 if( params->tag != ( MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) )
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225 return( MBEDTLS_ERR_X509_INVALID_ALG +
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226 MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
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228 p = (unsigned char *) params->p;
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229 end = p + params->len;
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237 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
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238 MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 0 ) ) == 0 )
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242 /* HashAlgorithm ::= AlgorithmIdentifier (without parameters) */
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243 if( ( ret = mbedtls_x509_get_alg_null( &p, end2, &alg_id ) ) != 0 )
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246 if( ( ret = mbedtls_oid_get_md_alg( &alg_id, md_alg ) ) != 0 )
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247 return( MBEDTLS_ERR_X509_INVALID_ALG + ret );
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250 return( MBEDTLS_ERR_X509_INVALID_ALG +
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251 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
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253 else if( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
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254 return( MBEDTLS_ERR_X509_INVALID_ALG + ret );
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262 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
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263 MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 1 ) ) == 0 )
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267 /* MaskGenAlgorithm ::= AlgorithmIdentifier (params = HashAlgorithm) */
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268 if( ( ret = mbedtls_x509_get_alg( &p, end2, &alg_id, &alg_params ) ) != 0 )
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271 /* Only MFG1 is recognised for now */
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272 if( MBEDTLS_OID_CMP( MBEDTLS_OID_MGF1, &alg_id ) != 0 )
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273 return( MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE +
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274 MBEDTLS_ERR_OID_NOT_FOUND );
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276 /* Parse HashAlgorithm */
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277 if( ( ret = x509_get_hash_alg( &alg_params, mgf_md ) ) != 0 )
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281 return( MBEDTLS_ERR_X509_INVALID_ALG +
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282 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
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284 else if( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
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285 return( MBEDTLS_ERR_X509_INVALID_ALG + ret );
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293 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
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294 MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 2 ) ) == 0 )
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298 if( ( ret = mbedtls_asn1_get_int( &p, end2, salt_len ) ) != 0 )
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299 return( MBEDTLS_ERR_X509_INVALID_ALG + ret );
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302 return( MBEDTLS_ERR_X509_INVALID_ALG +
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303 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
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305 else if( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
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306 return( MBEDTLS_ERR_X509_INVALID_ALG + ret );
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312 * trailer_field (if present, must be 1)
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314 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
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315 MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 3 ) ) == 0 )
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321 if( ( ret = mbedtls_asn1_get_int( &p, end2, &trailer_field ) ) != 0 )
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322 return( MBEDTLS_ERR_X509_INVALID_ALG + ret );
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325 return( MBEDTLS_ERR_X509_INVALID_ALG +
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326 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
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328 if( trailer_field != 1 )
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329 return( MBEDTLS_ERR_X509_INVALID_ALG );
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331 else if( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
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332 return( MBEDTLS_ERR_X509_INVALID_ALG + ret );
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335 return( MBEDTLS_ERR_X509_INVALID_ALG +
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336 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
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340 #endif /* MBEDTLS_X509_RSASSA_PSS_SUPPORT */
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343 * AttributeTypeAndValue ::= SEQUENCE {
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344 * type AttributeType,
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345 * value AttributeValue }
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347 * AttributeType ::= OBJECT IDENTIFIER
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349 * AttributeValue ::= ANY DEFINED BY AttributeType
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351 static int x509_get_attr_type_value( unsigned char **p,
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352 const unsigned char *end,
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353 mbedtls_x509_name *cur )
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357 mbedtls_x509_buf *oid;
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358 mbedtls_x509_buf *val;
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360 if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
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361 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
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362 return( MBEDTLS_ERR_X509_INVALID_NAME + ret );
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364 if( ( end - *p ) < 1 )
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365 return( MBEDTLS_ERR_X509_INVALID_NAME +
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366 MBEDTLS_ERR_ASN1_OUT_OF_DATA );
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371 if( ( ret = mbedtls_asn1_get_tag( p, end, &oid->len, MBEDTLS_ASN1_OID ) ) != 0 )
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372 return( MBEDTLS_ERR_X509_INVALID_NAME + ret );
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377 if( ( end - *p ) < 1 )
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378 return( MBEDTLS_ERR_X509_INVALID_NAME +
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379 MBEDTLS_ERR_ASN1_OUT_OF_DATA );
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381 if( **p != MBEDTLS_ASN1_BMP_STRING && **p != MBEDTLS_ASN1_UTF8_STRING &&
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382 **p != MBEDTLS_ASN1_T61_STRING && **p != MBEDTLS_ASN1_PRINTABLE_STRING &&
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383 **p != MBEDTLS_ASN1_IA5_STRING && **p != MBEDTLS_ASN1_UNIVERSAL_STRING &&
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384 **p != MBEDTLS_ASN1_BIT_STRING )
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385 return( MBEDTLS_ERR_X509_INVALID_NAME +
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386 MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
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389 val->tag = *(*p)++;
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391 if( ( ret = mbedtls_asn1_get_len( p, end, &val->len ) ) != 0 )
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392 return( MBEDTLS_ERR_X509_INVALID_NAME + ret );
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403 * Name ::= CHOICE { -- only one possibility for now --
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404 * rdnSequence RDNSequence }
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406 * RDNSequence ::= SEQUENCE OF RelativeDistinguishedName
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408 * RelativeDistinguishedName ::=
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409 * SET OF AttributeTypeAndValue
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411 * AttributeTypeAndValue ::= SEQUENCE {
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412 * type AttributeType,
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413 * value AttributeValue }
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415 * AttributeType ::= OBJECT IDENTIFIER
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417 * AttributeValue ::= ANY DEFINED BY AttributeType
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419 * The data structure is optimized for the common case where each RDN has only
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420 * one element, which is represented as a list of AttributeTypeAndValue.
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421 * For the general case we still use a flat list, but we mark elements of the
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422 * same set so that they are "merged" together in the functions that consume
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423 * this list, eg mbedtls_x509_dn_gets().
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425 int mbedtls_x509_get_name( unsigned char **p, const unsigned char *end,
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426 mbedtls_x509_name *cur )
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430 const unsigned char *end_set;
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432 /* don't use recursion, we'd risk stack overflow if not optimized */
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438 if( ( ret = mbedtls_asn1_get_tag( p, end, &set_len,
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439 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SET ) ) != 0 )
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440 return( MBEDTLS_ERR_X509_INVALID_NAME + ret );
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442 end_set = *p + set_len;
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446 if( ( ret = x509_get_attr_type_value( p, end_set, cur ) ) != 0 )
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449 if( *p == end_set )
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452 /* Mark this item as being no the only one in a set */
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453 cur->next_merged = 1;
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455 cur->next = mbedtls_calloc( 1, sizeof( mbedtls_x509_name ) );
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457 if( cur->next == NULL )
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458 return( MBEDTLS_ERR_X509_ALLOC_FAILED );
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464 * continue until end of SEQUENCE is reached
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469 cur->next = mbedtls_calloc( 1, sizeof( mbedtls_x509_name ) );
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471 if( cur->next == NULL )
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472 return( MBEDTLS_ERR_X509_ALLOC_FAILED );
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478 static int x509_parse_int( unsigned char **p, size_t n, int *res )
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482 for( ; n > 0; --n )
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484 if( ( **p < '0') || ( **p > '9' ) )
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485 return ( MBEDTLS_ERR_X509_INVALID_DATE );
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488 *res += ( *(*p)++ - '0' );
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494 static int x509_date_is_valid(const mbedtls_x509_time *t )
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496 int ret = MBEDTLS_ERR_X509_INVALID_DATE;
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499 CHECK_RANGE( 0, 9999, t->year );
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500 CHECK_RANGE( 0, 23, t->hour );
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501 CHECK_RANGE( 0, 59, t->min );
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502 CHECK_RANGE( 0, 59, t->sec );
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506 case 1: case 3: case 5: case 7: case 8: case 10: case 12:
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509 case 4: case 6: case 9: case 11:
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513 if( ( !( t->year % 4 ) && t->year % 100 ) ||
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514 !( t->year % 400 ) )
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522 CHECK_RANGE( 1, month_len, t->day );
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528 * Parse an ASN1_UTC_TIME (yearlen=2) or ASN1_GENERALIZED_TIME (yearlen=4)
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531 static int x509_parse_time( unsigned char **p, size_t len, size_t yearlen,
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532 mbedtls_x509_time *tm )
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537 * Minimum length is 10 or 12 depending on yearlen
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539 if ( len < yearlen + 8 )
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540 return ( MBEDTLS_ERR_X509_INVALID_DATE );
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541 len -= yearlen + 8;
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544 * Parse year, month, day, hour, minute
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546 CHECK( x509_parse_int( p, yearlen, &tm->year ) );
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547 if ( 2 == yearlen )
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549 if ( tm->year < 50 )
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555 CHECK( x509_parse_int( p, 2, &tm->mon ) );
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556 CHECK( x509_parse_int( p, 2, &tm->day ) );
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557 CHECK( x509_parse_int( p, 2, &tm->hour ) );
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558 CHECK( x509_parse_int( p, 2, &tm->min ) );
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561 * Parse seconds if present
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565 CHECK( x509_parse_int( p, 2, &tm->sec ) );
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569 return ( MBEDTLS_ERR_X509_INVALID_DATE );
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572 * Parse trailing 'Z' if present
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574 if ( 1 == len && 'Z' == **p )
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581 * We should have parsed all characters at this point
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584 return ( MBEDTLS_ERR_X509_INVALID_DATE );
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586 CHECK( x509_date_is_valid( tm ) );
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592 * Time ::= CHOICE {
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594 * generalTime GeneralizedTime }
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596 int mbedtls_x509_get_time( unsigned char **p, const unsigned char *end,
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597 mbedtls_x509_time *tm )
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600 size_t len, year_len;
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603 if( ( end - *p ) < 1 )
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604 return( MBEDTLS_ERR_X509_INVALID_DATE +
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605 MBEDTLS_ERR_ASN1_OUT_OF_DATA );
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609 if( tag == MBEDTLS_ASN1_UTC_TIME )
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611 else if( tag == MBEDTLS_ASN1_GENERALIZED_TIME )
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614 return( MBEDTLS_ERR_X509_INVALID_DATE +
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615 MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
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618 ret = mbedtls_asn1_get_len( p, end, &len );
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621 return( MBEDTLS_ERR_X509_INVALID_DATE + ret );
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623 return x509_parse_time( p, len, year_len, tm );
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626 int mbedtls_x509_get_sig( unsigned char **p, const unsigned char *end, mbedtls_x509_buf *sig )
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632 if( ( end - *p ) < 1 )
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633 return( MBEDTLS_ERR_X509_INVALID_SIGNATURE +
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634 MBEDTLS_ERR_ASN1_OUT_OF_DATA );
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638 if( ( ret = mbedtls_asn1_get_bitstring_null( p, end, &len ) ) != 0 )
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639 return( MBEDTLS_ERR_X509_INVALID_SIGNATURE + ret );
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641 sig->tag = tag_type;
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651 * Get signature algorithm from alg OID and optional parameters
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653 int mbedtls_x509_get_sig_alg( const mbedtls_x509_buf *sig_oid, const mbedtls_x509_buf *sig_params,
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654 mbedtls_md_type_t *md_alg, mbedtls_pk_type_t *pk_alg,
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659 if( *sig_opts != NULL )
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660 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
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662 if( ( ret = mbedtls_oid_get_sig_alg( sig_oid, md_alg, pk_alg ) ) != 0 )
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663 return( MBEDTLS_ERR_X509_UNKNOWN_SIG_ALG + ret );
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665 #if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
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666 if( *pk_alg == MBEDTLS_PK_RSASSA_PSS )
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668 mbedtls_pk_rsassa_pss_options *pss_opts;
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670 pss_opts = mbedtls_calloc( 1, sizeof( mbedtls_pk_rsassa_pss_options ) );
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671 if( pss_opts == NULL )
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672 return( MBEDTLS_ERR_X509_ALLOC_FAILED );
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674 ret = mbedtls_x509_get_rsassa_pss_params( sig_params,
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676 &pss_opts->mgf1_hash_id,
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677 &pss_opts->expected_salt_len );
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680 mbedtls_free( pss_opts );
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684 *sig_opts = (void *) pss_opts;
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687 #endif /* MBEDTLS_X509_RSASSA_PSS_SUPPORT */
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689 /* Make sure parameters are absent or NULL */
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690 if( ( sig_params->tag != MBEDTLS_ASN1_NULL && sig_params->tag != 0 ) ||
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691 sig_params->len != 0 )
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692 return( MBEDTLS_ERR_X509_INVALID_ALG );
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699 * X.509 Extensions (No parsing of extensions, pointer should
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700 * be either manually updated or extensions should be parsed!)
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702 int mbedtls_x509_get_ext( unsigned char **p, const unsigned char *end,
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703 mbedtls_x509_buf *ext, int tag )
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713 if( ( ret = mbedtls_asn1_get_tag( p, end, &ext->len,
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714 MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | tag ) ) != 0 )
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718 end = *p + ext->len;
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721 * Extensions ::= SEQUENCE SIZE (1..MAX) OF Extension
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723 * Extension ::= SEQUENCE {
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724 * extnID OBJECT IDENTIFIER,
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725 * critical BOOLEAN DEFAULT FALSE,
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726 * extnValue OCTET STRING }
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728 if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
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729 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
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730 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
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732 if( end != *p + len )
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733 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
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734 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
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740 * Store the name in printable form into buf; no more
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741 * than size characters will be written
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743 int mbedtls_x509_dn_gets( char *buf, size_t size, const mbedtls_x509_name *dn )
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747 unsigned char c, merge = 0;
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748 const mbedtls_x509_name *name;
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749 const char *short_name = NULL;
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750 char s[MBEDTLS_X509_MAX_DN_NAME_SIZE], *p;
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752 memset( s, 0, sizeof( s ) );
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758 while( name != NULL )
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768 ret = mbedtls_snprintf( p, n, merge ? " + " : ", " );
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769 MBEDTLS_X509_SAFE_SNPRINTF;
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772 ret = mbedtls_oid_get_attr_short_name( &name->oid, &short_name );
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775 ret = mbedtls_snprintf( p, n, "%s=", short_name );
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777 ret = mbedtls_snprintf( p, n, "\?\?=" );
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778 MBEDTLS_X509_SAFE_SNPRINTF;
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780 for( i = 0; i < name->val.len; i++ )
\r
782 if( i >= sizeof( s ) - 1 )
\r
785 c = name->val.p[i];
\r
786 if( c < 32 || c == 127 || ( c > 128 && c < 160 ) )
\r
791 ret = mbedtls_snprintf( p, n, "%s", s );
\r
792 MBEDTLS_X509_SAFE_SNPRINTF;
\r
794 merge = name->next_merged;
\r
798 return( (int) ( size - n ) );
\r
802 * Store the serial in printable form into buf; no more
\r
803 * than size characters will be written
\r
805 int mbedtls_x509_serial_gets( char *buf, size_t size, const mbedtls_x509_buf *serial )
\r
814 nr = ( serial->len <= 32 )
\r
815 ? serial->len : 28;
\r
817 for( i = 0; i < nr; i++ )
\r
819 if( i == 0 && nr > 1 && serial->p[i] == 0x0 )
\r
822 ret = mbedtls_snprintf( p, n, "%02X%s",
\r
823 serial->p[i], ( i < nr - 1 ) ? ":" : "" );
\r
824 MBEDTLS_X509_SAFE_SNPRINTF;
\r
827 if( nr != serial->len )
\r
829 ret = mbedtls_snprintf( p, n, "...." );
\r
830 MBEDTLS_X509_SAFE_SNPRINTF;
\r
833 return( (int) ( size - n ) );
\r
837 * Helper for writing signature algorithms
\r
839 int mbedtls_x509_sig_alg_gets( char *buf, size_t size, const mbedtls_x509_buf *sig_oid,
\r
840 mbedtls_pk_type_t pk_alg, mbedtls_md_type_t md_alg,
\r
841 const void *sig_opts )
\r
846 const char *desc = NULL;
\r
848 ret = mbedtls_oid_get_sig_alg_desc( sig_oid, &desc );
\r
850 ret = mbedtls_snprintf( p, n, "???" );
\r
852 ret = mbedtls_snprintf( p, n, "%s", desc );
\r
853 MBEDTLS_X509_SAFE_SNPRINTF;
\r
855 #if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
\r
856 if( pk_alg == MBEDTLS_PK_RSASSA_PSS )
\r
858 const mbedtls_pk_rsassa_pss_options *pss_opts;
\r
859 const mbedtls_md_info_t *md_info, *mgf_md_info;
\r
861 pss_opts = (const mbedtls_pk_rsassa_pss_options *) sig_opts;
\r
863 md_info = mbedtls_md_info_from_type( md_alg );
\r
864 mgf_md_info = mbedtls_md_info_from_type( pss_opts->mgf1_hash_id );
\r
866 ret = mbedtls_snprintf( p, n, " (%s, MGF1-%s, 0x%02X)",
\r
867 md_info ? mbedtls_md_get_name( md_info ) : "???",
\r
868 mgf_md_info ? mbedtls_md_get_name( mgf_md_info ) : "???",
\r
869 pss_opts->expected_salt_len );
\r
870 MBEDTLS_X509_SAFE_SNPRINTF;
\r
876 #endif /* MBEDTLS_X509_RSASSA_PSS_SUPPORT */
\r
878 return( (int)( size - n ) );
\r
882 * Helper for writing "RSA key size", "EC key size", etc
\r
884 int mbedtls_x509_key_size_helper( char *buf, size_t buf_size, const char *name )
\r
887 size_t n = buf_size;
\r
890 ret = mbedtls_snprintf( p, n, "%s key size", name );
\r
891 MBEDTLS_X509_SAFE_SNPRINTF;
\r
896 #if defined(MBEDTLS_HAVE_TIME_DATE)
\r
898 * Set the time structure to the current time.
\r
899 * Return 0 on success, non-zero on failure.
\r
901 static int x509_get_current_time( mbedtls_x509_time *now )
\r
903 struct tm *lt, tm_buf;
\r
907 tt = mbedtls_time( NULL );
\r
908 lt = mbedtls_platform_gmtime_r( &tt, &tm_buf );
\r
914 now->year = lt->tm_year + 1900;
\r
915 now->mon = lt->tm_mon + 1;
\r
916 now->day = lt->tm_mday;
\r
917 now->hour = lt->tm_hour;
\r
918 now->min = lt->tm_min;
\r
919 now->sec = lt->tm_sec;
\r
926 * Return 0 if before <= after, 1 otherwise
\r
928 static int x509_check_time( const mbedtls_x509_time *before, const mbedtls_x509_time *after )
\r
930 if( before->year > after->year )
\r
933 if( before->year == after->year &&
\r
934 before->mon > after->mon )
\r
937 if( before->year == after->year &&
\r
938 before->mon == after->mon &&
\r
939 before->day > after->day )
\r
942 if( before->year == after->year &&
\r
943 before->mon == after->mon &&
\r
944 before->day == after->day &&
\r
945 before->hour > after->hour )
\r
948 if( before->year == after->year &&
\r
949 before->mon == after->mon &&
\r
950 before->day == after->day &&
\r
951 before->hour == after->hour &&
\r
952 before->min > after->min )
\r
955 if( before->year == after->year &&
\r
956 before->mon == after->mon &&
\r
957 before->day == after->day &&
\r
958 before->hour == after->hour &&
\r
959 before->min == after->min &&
\r
960 before->sec > after->sec )
\r
966 int mbedtls_x509_time_is_past( const mbedtls_x509_time *to )
\r
968 mbedtls_x509_time now;
\r
970 if( x509_get_current_time( &now ) != 0 )
\r
973 return( x509_check_time( &now, to ) );
\r
976 int mbedtls_x509_time_is_future( const mbedtls_x509_time *from )
\r
978 mbedtls_x509_time now;
\r
980 if( x509_get_current_time( &now ) != 0 )
\r
983 return( x509_check_time( from, &now ) );
\r
986 #else /* MBEDTLS_HAVE_TIME_DATE */
\r
988 int mbedtls_x509_time_is_past( const mbedtls_x509_time *to )
\r
994 int mbedtls_x509_time_is_future( const mbedtls_x509_time *from )
\r
999 #endif /* MBEDTLS_HAVE_TIME_DATE */
\r
1001 #if defined(MBEDTLS_SELF_TEST)
\r
1003 #include "mbedtls/x509_crt.h"
\r
1004 #include "mbedtls/certs.h"
\r
1009 int mbedtls_x509_self_test( int verbose )
\r
1012 #if defined(MBEDTLS_CERTS_C) && defined(MBEDTLS_SHA256_C)
\r
1014 mbedtls_x509_crt cacert;
\r
1015 mbedtls_x509_crt clicert;
\r
1017 if( verbose != 0 )
\r
1018 mbedtls_printf( " X.509 certificate load: " );
\r
1020 mbedtls_x509_crt_init( &cacert );
\r
1021 mbedtls_x509_crt_init( &clicert );
\r
1023 ret = mbedtls_x509_crt_parse( &clicert, (const unsigned char *) mbedtls_test_cli_crt,
\r
1024 mbedtls_test_cli_crt_len );
\r
1027 if( verbose != 0 )
\r
1028 mbedtls_printf( "failed\n" );
\r
1033 ret = mbedtls_x509_crt_parse( &cacert, (const unsigned char *) mbedtls_test_ca_crt,
\r
1034 mbedtls_test_ca_crt_len );
\r
1037 if( verbose != 0 )
\r
1038 mbedtls_printf( "failed\n" );
\r
1043 if( verbose != 0 )
\r
1044 mbedtls_printf( "passed\n X.509 signature verify: ");
\r
1046 ret = mbedtls_x509_crt_verify( &clicert, &cacert, NULL, NULL, &flags, NULL, NULL );
\r
1049 if( verbose != 0 )
\r
1050 mbedtls_printf( "failed\n" );
\r
1055 if( verbose != 0 )
\r
1056 mbedtls_printf( "passed\n\n");
\r
1059 mbedtls_x509_crt_free( &cacert );
\r
1060 mbedtls_x509_crt_free( &clicert );
\r
1063 #endif /* MBEDTLS_CERTS_C && MBEDTLS_SHA1_C */
\r
1067 #endif /* MBEDTLS_SELF_TEST */
\r
1069 #endif /* MBEDTLS_X509_USE_C */
\r