mbedtls - mbed TLS Build

Users » markrad » Code » mbedtls

mbed TLS Build

Dependents: Encrypt_Decrypt1 mbed_blink_tls encrypt encrypt

library/x509_crt.c@0:cdf462088d13, 2017-01-05 (annotated)

Committer:: markrad
Date:: Thu Jan 05 00:18:44 2017 +0000
Revision:: 0:cdf462088d13

Initial commit

Who changed what in which revision?

User	Revision	Line number	New contents of line
markrad	0:cdf462088d13	1	/*
markrad	0:cdf462088d13	2	* X.509 certificate parsing and verification
markrad	0:cdf462088d13	3	*
markrad	0:cdf462088d13	4	* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
markrad	0:cdf462088d13	5	* SPDX-License-Identifier: Apache-2.0
markrad	0:cdf462088d13	6	*
markrad	0:cdf462088d13	7	* Licensed under the Apache License, Version 2.0 (the "License"); you may
markrad	0:cdf462088d13	8	* not use this file except in compliance with the License.
markrad	0:cdf462088d13	9	* You may obtain a copy of the License at
markrad	0:cdf462088d13	10	*
markrad	0:cdf462088d13	11	* http://www.apache.org/licenses/LICENSE-2.0
markrad	0:cdf462088d13	12	*
markrad	0:cdf462088d13	13	* Unless required by applicable law or agreed to in writing, software
markrad	0:cdf462088d13	14	* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
markrad	0:cdf462088d13	15	* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
markrad	0:cdf462088d13	16	* See the License for the specific language governing permissions and
markrad	0:cdf462088d13	17	* limitations under the License.
markrad	0:cdf462088d13	18	*
markrad	0:cdf462088d13	19	* This file is part of mbed TLS (https://tls.mbed.org)
markrad	0:cdf462088d13	20	*/
markrad	0:cdf462088d13	21	/*
markrad	0:cdf462088d13	22	* The ITU-T X.509 standard defines a certificate format for PKI.
markrad	0:cdf462088d13	23	*
markrad	0:cdf462088d13	24	* http://www.ietf.org/rfc/rfc5280.txt (Certificates and CRLs)
markrad	0:cdf462088d13	25	* http://www.ietf.org/rfc/rfc3279.txt (Alg IDs for CRLs)
markrad	0:cdf462088d13	26	* http://www.ietf.org/rfc/rfc2986.txt (CSRs, aka PKCS#10)
markrad	0:cdf462088d13	27	*
markrad	0:cdf462088d13	28	* http://www.itu.int/ITU-T/studygroups/com17/languages/X.680-0207.pdf
markrad	0:cdf462088d13	29	* http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf
markrad	0:cdf462088d13	30	*/
markrad	0:cdf462088d13	31
markrad	0:cdf462088d13	32	#if !defined(MBEDTLS_CONFIG_FILE)
markrad	0:cdf462088d13	33	#include "mbedtls/config.h"
markrad	0:cdf462088d13	34	#else
markrad	0:cdf462088d13	35	#include MBEDTLS_CONFIG_FILE
markrad	0:cdf462088d13	36	#endif
markrad	0:cdf462088d13	37
markrad	0:cdf462088d13	38	#if defined(MBEDTLS_X509_CRT_PARSE_C)
markrad	0:cdf462088d13	39
markrad	0:cdf462088d13	40	#include "mbedtls/x509_crt.h"
markrad	0:cdf462088d13	41	#include "mbedtls/oid.h"
markrad	0:cdf462088d13	42
markrad	0:cdf462088d13	43	#include <stdio.h>
markrad	0:cdf462088d13	44	#include <string.h>
markrad	0:cdf462088d13	45
markrad	0:cdf462088d13	46	#if defined(MBEDTLS_PEM_PARSE_C)
markrad	0:cdf462088d13	47	#include "mbedtls/pem.h"
markrad	0:cdf462088d13	48	#endif
markrad	0:cdf462088d13	49
markrad	0:cdf462088d13	50	#if defined(MBEDTLS_PLATFORM_C)
markrad	0:cdf462088d13	51	#include "mbedtls/platform.h"
markrad	0:cdf462088d13	52	#else
markrad	0:cdf462088d13	53	#include <stdlib.h>
markrad	0:cdf462088d13	54	#define mbedtls_free free
markrad	0:cdf462088d13	55	#define mbedtls_calloc calloc
markrad	0:cdf462088d13	56	#define mbedtls_snprintf snprintf
markrad	0:cdf462088d13	57	#endif
markrad	0:cdf462088d13	58
markrad	0:cdf462088d13	59	#if defined(MBEDTLS_THREADING_C)
markrad	0:cdf462088d13	60	#include "mbedtls/threading.h"
markrad	0:cdf462088d13	61	#endif
markrad	0:cdf462088d13	62
markrad	0:cdf462088d13	63	#if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
markrad	0:cdf462088d13	64	#include <windows.h>
markrad	0:cdf462088d13	65	#else
markrad	0:cdf462088d13	66	#include <time.h>
markrad	0:cdf462088d13	67	#endif
markrad	0:cdf462088d13	68
markrad	0:cdf462088d13	69	#if defined(MBEDTLS_FS_IO)
markrad	0:cdf462088d13	70	#include <stdio.h>
markrad	0:cdf462088d13	71	#if !defined(_WIN32) \|\| defined(EFIX64) \|\| defined(EFI32)
markrad	0:cdf462088d13	72	#include <sys/types.h>
markrad	0:cdf462088d13	73	#include <sys/stat.h>
markrad	0:cdf462088d13	74	#include <dirent.h>
markrad	0:cdf462088d13	75	#endif /* !_WIN32 \|\| EFIX64 \|\| EFI32 */
markrad	0:cdf462088d13	76	#endif
markrad	0:cdf462088d13	77
markrad	0:cdf462088d13	78	/* Implementation that should never be optimized out by the compiler */
markrad	0:cdf462088d13	79	static void mbedtls_zeroize( void *v, size_t n ) {
markrad	0:cdf462088d13	80	volatile unsigned char p = v; while( n-- ) p++ = 0;
markrad	0:cdf462088d13	81	}
markrad	0:cdf462088d13	82
markrad	0:cdf462088d13	83	/*
markrad	0:cdf462088d13	84	* Default profile
markrad	0:cdf462088d13	85	*/
markrad	0:cdf462088d13	86	const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_default =
markrad	0:cdf462088d13	87	{
markrad	0:cdf462088d13	88	/* Hashes from SHA-1 and above */
markrad	0:cdf462088d13	89	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA1 ) \|
markrad	0:cdf462088d13	90	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_RIPEMD160 ) \|
markrad	0:cdf462088d13	91	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA224 ) \|
markrad	0:cdf462088d13	92	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) \|
markrad	0:cdf462088d13	93	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ) \|
markrad	0:cdf462088d13	94	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
markrad	0:cdf462088d13	95	0xFFFFFFF, /* Any PK alg */
markrad	0:cdf462088d13	96	0xFFFFFFF, /* Any curve */
markrad	0:cdf462088d13	97	2048,
markrad	0:cdf462088d13	98	};
markrad	0:cdf462088d13	99
markrad	0:cdf462088d13	100	/*
markrad	0:cdf462088d13	101	* Next-default profile
markrad	0:cdf462088d13	102	*/
markrad	0:cdf462088d13	103	const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_next =
markrad	0:cdf462088d13	104	{
markrad	0:cdf462088d13	105	/* Hashes from SHA-256 and above */
markrad	0:cdf462088d13	106	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) \|
markrad	0:cdf462088d13	107	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ) \|
markrad	0:cdf462088d13	108	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
markrad	0:cdf462088d13	109	0xFFFFFFF, /* Any PK alg */
markrad	0:cdf462088d13	110	#if defined(MBEDTLS_ECP_C)
markrad	0:cdf462088d13	111	/* Curves at or above 128-bit security level */
markrad	0:cdf462088d13	112	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256R1 ) \|
markrad	0:cdf462088d13	113	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP384R1 ) \|
markrad	0:cdf462088d13	114	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP521R1 ) \|
markrad	0:cdf462088d13	115	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP256R1 ) \|
markrad	0:cdf462088d13	116	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP384R1 ) \|
markrad	0:cdf462088d13	117	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP512R1 ) \|
markrad	0:cdf462088d13	118	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256K1 ),
markrad	0:cdf462088d13	119	#else
markrad	0:cdf462088d13	120	0,
markrad	0:cdf462088d13	121	#endif
markrad	0:cdf462088d13	122	2048,
markrad	0:cdf462088d13	123	};
markrad	0:cdf462088d13	124
markrad	0:cdf462088d13	125	/*
markrad	0:cdf462088d13	126	* NSA Suite B Profile
markrad	0:cdf462088d13	127	*/
markrad	0:cdf462088d13	128	const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_suiteb =
markrad	0:cdf462088d13	129	{
markrad	0:cdf462088d13	130	/* Only SHA-256 and 384 */
markrad	0:cdf462088d13	131	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) \|
markrad	0:cdf462088d13	132	MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ),
markrad	0:cdf462088d13	133	/* Only ECDSA */
markrad	0:cdf462088d13	134	MBEDTLS_X509_ID_FLAG( MBEDTLS_PK_ECDSA ),
markrad	0:cdf462088d13	135	#if defined(MBEDTLS_ECP_C)
markrad	0:cdf462088d13	136	/* Only NIST P-256 and P-384 */
markrad	0:cdf462088d13	137	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256R1 ) \|
markrad	0:cdf462088d13	138	MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP384R1 ),
markrad	0:cdf462088d13	139	#else
markrad	0:cdf462088d13	140	0,
markrad	0:cdf462088d13	141	#endif
markrad	0:cdf462088d13	142	0,
markrad	0:cdf462088d13	143	};
markrad	0:cdf462088d13	144
markrad	0:cdf462088d13	145	/*
markrad	0:cdf462088d13	146	* Check md_alg against profile
markrad	0:cdf462088d13	147	* Return 0 if md_alg acceptable for this profile, -1 otherwise
markrad	0:cdf462088d13	148	*/
markrad	0:cdf462088d13	149	static int x509_profile_check_md_alg( const mbedtls_x509_crt_profile *profile,
markrad	0:cdf462088d13	150	mbedtls_md_type_t md_alg )
markrad	0:cdf462088d13	151	{
markrad	0:cdf462088d13	152	if( ( profile->allowed_mds & MBEDTLS_X509_ID_FLAG( md_alg ) ) != 0 )
markrad	0:cdf462088d13	153	return( 0 );
markrad	0:cdf462088d13	154
markrad	0:cdf462088d13	155	return( -1 );
markrad	0:cdf462088d13	156	}
markrad	0:cdf462088d13	157
markrad	0:cdf462088d13	158	/*
markrad	0:cdf462088d13	159	* Check pk_alg against profile
markrad	0:cdf462088d13	160	* Return 0 if pk_alg acceptable for this profile, -1 otherwise
markrad	0:cdf462088d13	161	*/
markrad	0:cdf462088d13	162	static int x509_profile_check_pk_alg( const mbedtls_x509_crt_profile *profile,
markrad	0:cdf462088d13	163	mbedtls_pk_type_t pk_alg )
markrad	0:cdf462088d13	164	{
markrad	0:cdf462088d13	165	if( ( profile->allowed_pks & MBEDTLS_X509_ID_FLAG( pk_alg ) ) != 0 )
markrad	0:cdf462088d13	166	return( 0 );
markrad	0:cdf462088d13	167
markrad	0:cdf462088d13	168	return( -1 );
markrad	0:cdf462088d13	169	}
markrad	0:cdf462088d13	170
markrad	0:cdf462088d13	171	/*
markrad	0:cdf462088d13	172	* Check key against profile
markrad	0:cdf462088d13	173	* Return 0 if pk_alg acceptable for this profile, -1 otherwise
markrad	0:cdf462088d13	174	*/
markrad	0:cdf462088d13	175	static int x509_profile_check_key( const mbedtls_x509_crt_profile *profile,
markrad	0:cdf462088d13	176	mbedtls_pk_type_t pk_alg,
markrad	0:cdf462088d13	177	const mbedtls_pk_context *pk )
markrad	0:cdf462088d13	178	{
markrad	0:cdf462088d13	179	#if defined(MBEDTLS_RSA_C)
markrad	0:cdf462088d13	180	if( pk_alg == MBEDTLS_PK_RSA \|\| pk_alg == MBEDTLS_PK_RSASSA_PSS )
markrad	0:cdf462088d13	181	{
markrad	0:cdf462088d13	182	if( mbedtls_pk_get_bitlen( pk ) >= profile->rsa_min_bitlen )
markrad	0:cdf462088d13	183	return( 0 );
markrad	0:cdf462088d13	184
markrad	0:cdf462088d13	185	return( -1 );
markrad	0:cdf462088d13	186	}
markrad	0:cdf462088d13	187	#endif
markrad	0:cdf462088d13	188
markrad	0:cdf462088d13	189	#if defined(MBEDTLS_ECP_C)
markrad	0:cdf462088d13	190	if( pk_alg == MBEDTLS_PK_ECDSA \|\|
markrad	0:cdf462088d13	191	pk_alg == MBEDTLS_PK_ECKEY \|\|
markrad	0:cdf462088d13	192	pk_alg == MBEDTLS_PK_ECKEY_DH )
markrad	0:cdf462088d13	193	{
markrad	0:cdf462088d13	194	mbedtls_ecp_group_id gid = mbedtls_pk_ec( *pk )->grp.id;
markrad	0:cdf462088d13	195
markrad	0:cdf462088d13	196	if( ( profile->allowed_curves & MBEDTLS_X509_ID_FLAG( gid ) ) != 0 )
markrad	0:cdf462088d13	197	return( 0 );
markrad	0:cdf462088d13	198
markrad	0:cdf462088d13	199	return( -1 );
markrad	0:cdf462088d13	200	}
markrad	0:cdf462088d13	201	#endif
markrad	0:cdf462088d13	202
markrad	0:cdf462088d13	203	return( -1 );
markrad	0:cdf462088d13	204	}
markrad	0:cdf462088d13	205
markrad	0:cdf462088d13	206	/*
markrad	0:cdf462088d13	207	* Version ::= INTEGER { v1(0), v2(1), v3(2) }
markrad	0:cdf462088d13	208	*/
markrad	0:cdf462088d13	209	static int x509_get_version( unsigned char **p,
markrad	0:cdf462088d13	210	const unsigned char *end,
markrad	0:cdf462088d13	211	int *ver )
markrad	0:cdf462088d13	212	{
markrad	0:cdf462088d13	213	int ret;
markrad	0:cdf462088d13	214	size_t len;
markrad	0:cdf462088d13	215
markrad	0:cdf462088d13	216	if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
markrad	0:cdf462088d13	217	MBEDTLS_ASN1_CONTEXT_SPECIFIC \| MBEDTLS_ASN1_CONSTRUCTED \| 0 ) ) != 0 )
markrad	0:cdf462088d13	218	{
markrad	0:cdf462088d13	219	if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
markrad	0:cdf462088d13	220	{
markrad	0:cdf462088d13	221	*ver = 0;
markrad	0:cdf462088d13	222	return( 0 );
markrad	0:cdf462088d13	223	}
markrad	0:cdf462088d13	224
markrad	0:cdf462088d13	225	return( ret );
markrad	0:cdf462088d13	226	}
markrad	0:cdf462088d13	227
markrad	0:cdf462088d13	228	end = *p + len;
markrad	0:cdf462088d13	229
markrad	0:cdf462088d13	230	if( ( ret = mbedtls_asn1_get_int( p, end, ver ) ) != 0 )
markrad	0:cdf462088d13	231	return( MBEDTLS_ERR_X509_INVALID_VERSION + ret );
markrad	0:cdf462088d13	232
markrad	0:cdf462088d13	233	if( *p != end )
markrad	0:cdf462088d13	234	return( MBEDTLS_ERR_X509_INVALID_VERSION +
markrad	0:cdf462088d13	235	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
markrad	0:cdf462088d13	236
markrad	0:cdf462088d13	237	return( 0 );
markrad	0:cdf462088d13	238	}
markrad	0:cdf462088d13	239
markrad	0:cdf462088d13	240	/*
markrad	0:cdf462088d13	241	* Validity ::= SEQUENCE {
markrad	0:cdf462088d13	242	* notBefore Time,
markrad	0:cdf462088d13	243	* notAfter Time }
markrad	0:cdf462088d13	244	*/
markrad	0:cdf462088d13	245	static int x509_get_dates( unsigned char **p,
markrad	0:cdf462088d13	246	const unsigned char *end,
markrad	0:cdf462088d13	247	mbedtls_x509_time *from,
markrad	0:cdf462088d13	248	mbedtls_x509_time *to )
markrad	0:cdf462088d13	249	{
markrad	0:cdf462088d13	250	int ret;
markrad	0:cdf462088d13	251	size_t len;
markrad	0:cdf462088d13	252
markrad	0:cdf462088d13	253	if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
markrad	0:cdf462088d13	254	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
markrad	0:cdf462088d13	255	return( MBEDTLS_ERR_X509_INVALID_DATE + ret );
markrad	0:cdf462088d13	256
markrad	0:cdf462088d13	257	end = *p + len;
markrad	0:cdf462088d13	258
markrad	0:cdf462088d13	259	if( ( ret = mbedtls_x509_get_time( p, end, from ) ) != 0 )
markrad	0:cdf462088d13	260	return( ret );
markrad	0:cdf462088d13	261
markrad	0:cdf462088d13	262	if( ( ret = mbedtls_x509_get_time( p, end, to ) ) != 0 )
markrad	0:cdf462088d13	263	return( ret );
markrad	0:cdf462088d13	264
markrad	0:cdf462088d13	265	if( *p != end )
markrad	0:cdf462088d13	266	return( MBEDTLS_ERR_X509_INVALID_DATE +
markrad	0:cdf462088d13	267	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
markrad	0:cdf462088d13	268
markrad	0:cdf462088d13	269	return( 0 );
markrad	0:cdf462088d13	270	}
markrad	0:cdf462088d13	271
markrad	0:cdf462088d13	272	/*
markrad	0:cdf462088d13	273	* X.509 v2/v3 unique identifier (not parsed)
markrad	0:cdf462088d13	274	*/
markrad	0:cdf462088d13	275	static int x509_get_uid( unsigned char **p,
markrad	0:cdf462088d13	276	const unsigned char *end,
markrad	0:cdf462088d13	277	mbedtls_x509_buf *uid, int n )
markrad	0:cdf462088d13	278	{
markrad	0:cdf462088d13	279	int ret;
markrad	0:cdf462088d13	280
markrad	0:cdf462088d13	281	if( *p == end )
markrad	0:cdf462088d13	282	return( 0 );
markrad	0:cdf462088d13	283
markrad	0:cdf462088d13	284	uid->tag = **p;
markrad	0:cdf462088d13	285
markrad	0:cdf462088d13	286	if( ( ret = mbedtls_asn1_get_tag( p, end, &uid->len,
markrad	0:cdf462088d13	287	MBEDTLS_ASN1_CONTEXT_SPECIFIC \| MBEDTLS_ASN1_CONSTRUCTED \| n ) ) != 0 )
markrad	0:cdf462088d13	288	{
markrad	0:cdf462088d13	289	if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
markrad	0:cdf462088d13	290	return( 0 );
markrad	0:cdf462088d13	291
markrad	0:cdf462088d13	292	return( ret );
markrad	0:cdf462088d13	293	}
markrad	0:cdf462088d13	294
markrad	0:cdf462088d13	295	uid->p = *p;
markrad	0:cdf462088d13	296	*p += uid->len;
markrad	0:cdf462088d13	297
markrad	0:cdf462088d13	298	return( 0 );
markrad	0:cdf462088d13	299	}
markrad	0:cdf462088d13	300
markrad	0:cdf462088d13	301	static int x509_get_basic_constraints( unsigned char **p,
markrad	0:cdf462088d13	302	const unsigned char *end,
markrad	0:cdf462088d13	303	int *ca_istrue,
markrad	0:cdf462088d13	304	int *max_pathlen )
markrad	0:cdf462088d13	305	{
markrad	0:cdf462088d13	306	int ret;
markrad	0:cdf462088d13	307	size_t len;
markrad	0:cdf462088d13	308
markrad	0:cdf462088d13	309	/*
markrad	0:cdf462088d13	310	* BasicConstraints ::= SEQUENCE {
markrad	0:cdf462088d13	311	* cA BOOLEAN DEFAULT FALSE,
markrad	0:cdf462088d13	312	* pathLenConstraint INTEGER (0..MAX) OPTIONAL }
markrad	0:cdf462088d13	313	*/
markrad	0:cdf462088d13	314	ca_istrue = 0; / DEFAULT FALSE */
markrad	0:cdf462088d13	315	max_pathlen = 0; / endless */
markrad	0:cdf462088d13	316
markrad	0:cdf462088d13	317	if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
markrad	0:cdf462088d13	318	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
markrad	0:cdf462088d13	319	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
markrad	0:cdf462088d13	320
markrad	0:cdf462088d13	321	if( *p == end )
markrad	0:cdf462088d13	322	return( 0 );
markrad	0:cdf462088d13	323
markrad	0:cdf462088d13	324	if( ( ret = mbedtls_asn1_get_bool( p, end, ca_istrue ) ) != 0 )
markrad	0:cdf462088d13	325	{
markrad	0:cdf462088d13	326	if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
markrad	0:cdf462088d13	327	ret = mbedtls_asn1_get_int( p, end, ca_istrue );
markrad	0:cdf462088d13	328
markrad	0:cdf462088d13	329	if( ret != 0 )
markrad	0:cdf462088d13	330	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
markrad	0:cdf462088d13	331
markrad	0:cdf462088d13	332	if( *ca_istrue != 0 )
markrad	0:cdf462088d13	333	*ca_istrue = 1;
markrad	0:cdf462088d13	334	}
markrad	0:cdf462088d13	335
markrad	0:cdf462088d13	336	if( *p == end )
markrad	0:cdf462088d13	337	return( 0 );
markrad	0:cdf462088d13	338
markrad	0:cdf462088d13	339	if( ( ret = mbedtls_asn1_get_int( p, end, max_pathlen ) ) != 0 )
markrad	0:cdf462088d13	340	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
markrad	0:cdf462088d13	341
markrad	0:cdf462088d13	342	if( *p != end )
markrad	0:cdf462088d13	343	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
markrad	0:cdf462088d13	344	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
markrad	0:cdf462088d13	345
markrad	0:cdf462088d13	346	(*max_pathlen)++;
markrad	0:cdf462088d13	347
markrad	0:cdf462088d13	348	return( 0 );
markrad	0:cdf462088d13	349	}
markrad	0:cdf462088d13	350
markrad	0:cdf462088d13	351	static int x509_get_ns_cert_type( unsigned char **p,
markrad	0:cdf462088d13	352	const unsigned char *end,
markrad	0:cdf462088d13	353	unsigned char *ns_cert_type)
markrad	0:cdf462088d13	354	{
markrad	0:cdf462088d13	355	int ret;
markrad	0:cdf462088d13	356	mbedtls_x509_bitstring bs = { 0, 0, NULL };
markrad	0:cdf462088d13	357
markrad	0:cdf462088d13	358	if( ( ret = mbedtls_asn1_get_bitstring( p, end, &bs ) ) != 0 )
markrad	0:cdf462088d13	359	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
markrad	0:cdf462088d13	360
markrad	0:cdf462088d13	361	if( bs.len != 1 )
markrad	0:cdf462088d13	362	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
markrad	0:cdf462088d13	363	MBEDTLS_ERR_ASN1_INVALID_LENGTH );
markrad	0:cdf462088d13	364
markrad	0:cdf462088d13	365	/* Get actual bitstring */
markrad	0:cdf462088d13	366	ns_cert_type = bs.p;
markrad	0:cdf462088d13	367	return( 0 );
markrad	0:cdf462088d13	368	}
markrad	0:cdf462088d13	369
markrad	0:cdf462088d13	370	static int x509_get_key_usage( unsigned char **p,
markrad	0:cdf462088d13	371	const unsigned char *end,
markrad	0:cdf462088d13	372	unsigned int *key_usage)
markrad	0:cdf462088d13	373	{
markrad	0:cdf462088d13	374	int ret;
markrad	0:cdf462088d13	375	size_t i;
markrad	0:cdf462088d13	376	mbedtls_x509_bitstring bs = { 0, 0, NULL };
markrad	0:cdf462088d13	377
markrad	0:cdf462088d13	378	if( ( ret = mbedtls_asn1_get_bitstring( p, end, &bs ) ) != 0 )
markrad	0:cdf462088d13	379	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
markrad	0:cdf462088d13	380
markrad	0:cdf462088d13	381	if( bs.len < 1 )
markrad	0:cdf462088d13	382	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
markrad	0:cdf462088d13	383	MBEDTLS_ERR_ASN1_INVALID_LENGTH );
markrad	0:cdf462088d13	384
markrad	0:cdf462088d13	385	/* Get actual bitstring */
markrad	0:cdf462088d13	386	*key_usage = 0;
markrad	0:cdf462088d13	387	for( i = 0; i < bs.len && i < sizeof( unsigned int ); i++ )
markrad	0:cdf462088d13	388	{
markrad	0:cdf462088d13	389	key_usage \|= (unsigned int) bs.p[i] << (8i);
markrad	0:cdf462088d13	390	}
markrad	0:cdf462088d13	391
markrad	0:cdf462088d13	392	return( 0 );
markrad	0:cdf462088d13	393	}
markrad	0:cdf462088d13	394
markrad	0:cdf462088d13	395	/*
markrad	0:cdf462088d13	396	* ExtKeyUsageSyntax ::= SEQUENCE SIZE (1..MAX) OF KeyPurposeId
markrad	0:cdf462088d13	397	*
markrad	0:cdf462088d13	398	* KeyPurposeId ::= OBJECT IDENTIFIER
markrad	0:cdf462088d13	399	*/
markrad	0:cdf462088d13	400	static int x509_get_ext_key_usage( unsigned char **p,
markrad	0:cdf462088d13	401	const unsigned char *end,
markrad	0:cdf462088d13	402	mbedtls_x509_sequence *ext_key_usage)
markrad	0:cdf462088d13	403	{
markrad	0:cdf462088d13	404	int ret;
markrad	0:cdf462088d13	405
markrad	0:cdf462088d13	406	if( ( ret = mbedtls_asn1_get_sequence_of( p, end, ext_key_usage, MBEDTLS_ASN1_OID ) ) != 0 )
markrad	0:cdf462088d13	407	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
markrad	0:cdf462088d13	408
markrad	0:cdf462088d13	409	/* Sequence length must be >= 1 */
markrad	0:cdf462088d13	410	if( ext_key_usage->buf.p == NULL )
markrad	0:cdf462088d13	411	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
markrad	0:cdf462088d13	412	MBEDTLS_ERR_ASN1_INVALID_LENGTH );
markrad	0:cdf462088d13	413
markrad	0:cdf462088d13	414	return( 0 );
markrad	0:cdf462088d13	415	}
markrad	0:cdf462088d13	416
markrad	0:cdf462088d13	417	/*
markrad	0:cdf462088d13	418	* SubjectAltName ::= GeneralNames
markrad	0:cdf462088d13	419	*
markrad	0:cdf462088d13	420	* GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName
markrad	0:cdf462088d13	421	*
markrad	0:cdf462088d13	422	* GeneralName ::= CHOICE {
markrad	0:cdf462088d13	423	* otherName [0] OtherName,
markrad	0:cdf462088d13	424	* rfc822Name [1] IA5String,
markrad	0:cdf462088d13	425	* dNSName [2] IA5String,
markrad	0:cdf462088d13	426	* x400Address [3] ORAddress,
markrad	0:cdf462088d13	427	* directoryName [4] Name,
markrad	0:cdf462088d13	428	* ediPartyName [5] EDIPartyName,
markrad	0:cdf462088d13	429	* uniformResourceIdentifier [6] IA5String,
markrad	0:cdf462088d13	430	* iPAddress [7] OCTET STRING,
markrad	0:cdf462088d13	431	* registeredID [8] OBJECT IDENTIFIER }
markrad	0:cdf462088d13	432	*
markrad	0:cdf462088d13	433	* OtherName ::= SEQUENCE {
markrad	0:cdf462088d13	434	* type-id OBJECT IDENTIFIER,
markrad	0:cdf462088d13	435	* value [0] EXPLICIT ANY DEFINED BY type-id }
markrad	0:cdf462088d13	436	*
markrad	0:cdf462088d13	437	* EDIPartyName ::= SEQUENCE {
markrad	0:cdf462088d13	438	* nameAssigner [0] DirectoryString OPTIONAL,
markrad	0:cdf462088d13	439	* partyName [1] DirectoryString }
markrad	0:cdf462088d13	440	*
markrad	0:cdf462088d13	441	* NOTE: we only parse and use dNSName at this point.
markrad	0:cdf462088d13	442	*/
markrad	0:cdf462088d13	443	static int x509_get_subject_alt_name( unsigned char **p,
markrad	0:cdf462088d13	444	const unsigned char *end,
markrad	0:cdf462088d13	445	mbedtls_x509_sequence *subject_alt_name )
markrad	0:cdf462088d13	446	{
markrad	0:cdf462088d13	447	int ret;
markrad	0:cdf462088d13	448	size_t len, tag_len;
markrad	0:cdf462088d13	449	mbedtls_asn1_buf *buf;
markrad	0:cdf462088d13	450	unsigned char tag;
markrad	0:cdf462088d13	451	mbedtls_asn1_sequence *cur = subject_alt_name;
markrad	0:cdf462088d13	452
markrad	0:cdf462088d13	453	/* Get main sequence tag */
markrad	0:cdf462088d13	454	if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
markrad	0:cdf462088d13	455	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
markrad	0:cdf462088d13	456	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
markrad	0:cdf462088d13	457
markrad	0:cdf462088d13	458	if( *p + len != end )
markrad	0:cdf462088d13	459	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
markrad	0:cdf462088d13	460	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
markrad	0:cdf462088d13	461
markrad	0:cdf462088d13	462	while( *p < end )
markrad	0:cdf462088d13	463	{
markrad	0:cdf462088d13	464	if( ( end - *p ) < 1 )
markrad	0:cdf462088d13	465	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
markrad	0:cdf462088d13	466	MBEDTLS_ERR_ASN1_OUT_OF_DATA );
markrad	0:cdf462088d13	467
markrad	0:cdf462088d13	468	tag = **p;
markrad	0:cdf462088d13	469	(*p)++;
markrad	0:cdf462088d13	470	if( ( ret = mbedtls_asn1_get_len( p, end, &tag_len ) ) != 0 )
markrad	0:cdf462088d13	471	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
markrad	0:cdf462088d13	472
markrad	0:cdf462088d13	473	if( ( tag & MBEDTLS_ASN1_CONTEXT_SPECIFIC ) != MBEDTLS_ASN1_CONTEXT_SPECIFIC )
markrad	0:cdf462088d13	474	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
markrad	0:cdf462088d13	475	MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
markrad	0:cdf462088d13	476
markrad	0:cdf462088d13	477	/* Skip everything but DNS name */
markrad	0:cdf462088d13	478	if( tag != ( MBEDTLS_ASN1_CONTEXT_SPECIFIC \| 2 ) )
markrad	0:cdf462088d13	479	{
markrad	0:cdf462088d13	480	*p += tag_len;
markrad	0:cdf462088d13	481	continue;
markrad	0:cdf462088d13	482	}
markrad	0:cdf462088d13	483
markrad	0:cdf462088d13	484	/* Allocate and assign next pointer */
markrad	0:cdf462088d13	485	if( cur->buf.p != NULL )
markrad	0:cdf462088d13	486	{
markrad	0:cdf462088d13	487	if( cur->next != NULL )
markrad	0:cdf462088d13	488	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS );
markrad	0:cdf462088d13	489
markrad	0:cdf462088d13	490	cur->next = mbedtls_calloc( 1, sizeof( mbedtls_asn1_sequence ) );
markrad	0:cdf462088d13	491
markrad	0:cdf462088d13	492	if( cur->next == NULL )
markrad	0:cdf462088d13	493	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
markrad	0:cdf462088d13	494	MBEDTLS_ERR_ASN1_ALLOC_FAILED );
markrad	0:cdf462088d13	495
markrad	0:cdf462088d13	496	cur = cur->next;
markrad	0:cdf462088d13	497	}
markrad	0:cdf462088d13	498
markrad	0:cdf462088d13	499	buf = &(cur->buf);
markrad	0:cdf462088d13	500	buf->tag = tag;
markrad	0:cdf462088d13	501	buf->p = *p;
markrad	0:cdf462088d13	502	buf->len = tag_len;
markrad	0:cdf462088d13	503	*p += buf->len;
markrad	0:cdf462088d13	504	}
markrad	0:cdf462088d13	505
markrad	0:cdf462088d13	506	/* Set final sequence entry's next pointer to NULL */
markrad	0:cdf462088d13	507	cur->next = NULL;
markrad	0:cdf462088d13	508
markrad	0:cdf462088d13	509	if( *p != end )
markrad	0:cdf462088d13	510	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
markrad	0:cdf462088d13	511	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
markrad	0:cdf462088d13	512
markrad	0:cdf462088d13	513	return( 0 );
markrad	0:cdf462088d13	514	}
markrad	0:cdf462088d13	515
markrad	0:cdf462088d13	516	/*
markrad	0:cdf462088d13	517	* X.509 v3 extensions
markrad	0:cdf462088d13	518	*
markrad	0:cdf462088d13	519	*/
markrad	0:cdf462088d13	520	static int x509_get_crt_ext( unsigned char **p,
markrad	0:cdf462088d13	521	const unsigned char *end,
markrad	0:cdf462088d13	522	mbedtls_x509_crt *crt )
markrad	0:cdf462088d13	523	{
markrad	0:cdf462088d13	524	int ret;
markrad	0:cdf462088d13	525	size_t len;
markrad	0:cdf462088d13	526	unsigned char end_ext_data, end_ext_octet;
markrad	0:cdf462088d13	527
markrad	0:cdf462088d13	528	if( ( ret = mbedtls_x509_get_ext( p, end, &crt->v3_ext, 3 ) ) != 0 )
markrad	0:cdf462088d13	529	{
markrad	0:cdf462088d13	530	if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
markrad	0:cdf462088d13	531	return( 0 );
markrad	0:cdf462088d13	532
markrad	0:cdf462088d13	533	return( ret );
markrad	0:cdf462088d13	534	}
markrad	0:cdf462088d13	535
markrad	0:cdf462088d13	536	while( *p < end )
markrad	0:cdf462088d13	537	{
markrad	0:cdf462088d13	538	/*
markrad	0:cdf462088d13	539	* Extension ::= SEQUENCE {
markrad	0:cdf462088d13	540	* extnID OBJECT IDENTIFIER,
markrad	0:cdf462088d13	541	* critical BOOLEAN DEFAULT FALSE,
markrad	0:cdf462088d13	542	* extnValue OCTET STRING }
markrad	0:cdf462088d13	543	*/
markrad	0:cdf462088d13	544	mbedtls_x509_buf extn_oid = {0, 0, NULL};
markrad	0:cdf462088d13	545	int is_critical = 0; /* DEFAULT FALSE */
markrad	0:cdf462088d13	546	int ext_type = 0;
markrad	0:cdf462088d13	547
markrad	0:cdf462088d13	548	if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
markrad	0:cdf462088d13	549	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
markrad	0:cdf462088d13	550	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
markrad	0:cdf462088d13	551
markrad	0:cdf462088d13	552	end_ext_data = *p + len;
markrad	0:cdf462088d13	553
markrad	0:cdf462088d13	554	/* Get extension ID */
markrad	0:cdf462088d13	555	extn_oid.tag = **p;
markrad	0:cdf462088d13	556
markrad	0:cdf462088d13	557	if( ( ret = mbedtls_asn1_get_tag( p, end, &extn_oid.len, MBEDTLS_ASN1_OID ) ) != 0 )
markrad	0:cdf462088d13	558	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
markrad	0:cdf462088d13	559
markrad	0:cdf462088d13	560	extn_oid.p = *p;
markrad	0:cdf462088d13	561	*p += extn_oid.len;
markrad	0:cdf462088d13	562
markrad	0:cdf462088d13	563	if( ( end - *p ) < 1 )
markrad	0:cdf462088d13	564	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
markrad	0:cdf462088d13	565	MBEDTLS_ERR_ASN1_OUT_OF_DATA );
markrad	0:cdf462088d13	566
markrad	0:cdf462088d13	567	/* Get optional critical */
markrad	0:cdf462088d13	568	if( ( ret = mbedtls_asn1_get_bool( p, end_ext_data, &is_critical ) ) != 0 &&
markrad	0:cdf462088d13	569	( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ) )
markrad	0:cdf462088d13	570	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
markrad	0:cdf462088d13	571
markrad	0:cdf462088d13	572	/* Data should be octet string type */
markrad	0:cdf462088d13	573	if( ( ret = mbedtls_asn1_get_tag( p, end_ext_data, &len,
markrad	0:cdf462088d13	574	MBEDTLS_ASN1_OCTET_STRING ) ) != 0 )
markrad	0:cdf462088d13	575	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
markrad	0:cdf462088d13	576
markrad	0:cdf462088d13	577	end_ext_octet = *p + len;
markrad	0:cdf462088d13	578
markrad	0:cdf462088d13	579	if( end_ext_octet != end_ext_data )
markrad	0:cdf462088d13	580	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
markrad	0:cdf462088d13	581	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
markrad	0:cdf462088d13	582
markrad	0:cdf462088d13	583	/*
markrad	0:cdf462088d13	584	* Detect supported extensions
markrad	0:cdf462088d13	585	*/
markrad	0:cdf462088d13	586	ret = mbedtls_oid_get_x509_ext_type( &extn_oid, &ext_type );
markrad	0:cdf462088d13	587
markrad	0:cdf462088d13	588	if( ret != 0 )
markrad	0:cdf462088d13	589	{
markrad	0:cdf462088d13	590	/* No parser found, skip extension */
markrad	0:cdf462088d13	591	*p = end_ext_octet;
markrad	0:cdf462088d13	592
markrad	0:cdf462088d13	593	#if !defined(MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION)
markrad	0:cdf462088d13	594	if( is_critical )
markrad	0:cdf462088d13	595	{
markrad	0:cdf462088d13	596	/* Data is marked as critical: fail */
markrad	0:cdf462088d13	597	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
markrad	0:cdf462088d13	598	MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
markrad	0:cdf462088d13	599	}
markrad	0:cdf462088d13	600	#endif
markrad	0:cdf462088d13	601	continue;
markrad	0:cdf462088d13	602	}
markrad	0:cdf462088d13	603
markrad	0:cdf462088d13	604	/* Forbid repeated extensions */
markrad	0:cdf462088d13	605	if( ( crt->ext_types & ext_type ) != 0 )
markrad	0:cdf462088d13	606	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS );
markrad	0:cdf462088d13	607
markrad	0:cdf462088d13	608	crt->ext_types \|= ext_type;
markrad	0:cdf462088d13	609
markrad	0:cdf462088d13	610	switch( ext_type )
markrad	0:cdf462088d13	611	{
markrad	0:cdf462088d13	612	case MBEDTLS_X509_EXT_BASIC_CONSTRAINTS:
markrad	0:cdf462088d13	613	/* Parse basic constraints */
markrad	0:cdf462088d13	614	if( ( ret = x509_get_basic_constraints( p, end_ext_octet,
markrad	0:cdf462088d13	615	&crt->ca_istrue, &crt->max_pathlen ) ) != 0 )
markrad	0:cdf462088d13	616	return( ret );
markrad	0:cdf462088d13	617	break;
markrad	0:cdf462088d13	618
markrad	0:cdf462088d13	619	case MBEDTLS_X509_EXT_KEY_USAGE:
markrad	0:cdf462088d13	620	/* Parse key usage */
markrad	0:cdf462088d13	621	if( ( ret = x509_get_key_usage( p, end_ext_octet,
markrad	0:cdf462088d13	622	&crt->key_usage ) ) != 0 )
markrad	0:cdf462088d13	623	return( ret );
markrad	0:cdf462088d13	624	break;
markrad	0:cdf462088d13	625
markrad	0:cdf462088d13	626	case MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE:
markrad	0:cdf462088d13	627	/* Parse extended key usage */
markrad	0:cdf462088d13	628	if( ( ret = x509_get_ext_key_usage( p, end_ext_octet,
markrad	0:cdf462088d13	629	&crt->ext_key_usage ) ) != 0 )
markrad	0:cdf462088d13	630	return( ret );
markrad	0:cdf462088d13	631	break;
markrad	0:cdf462088d13	632
markrad	0:cdf462088d13	633	case MBEDTLS_X509_EXT_SUBJECT_ALT_NAME:
markrad	0:cdf462088d13	634	/* Parse subject alt name */
markrad	0:cdf462088d13	635	if( ( ret = x509_get_subject_alt_name( p, end_ext_octet,
markrad	0:cdf462088d13	636	&crt->subject_alt_names ) ) != 0 )
markrad	0:cdf462088d13	637	return( ret );
markrad	0:cdf462088d13	638	break;
markrad	0:cdf462088d13	639
markrad	0:cdf462088d13	640	case MBEDTLS_X509_EXT_NS_CERT_TYPE:
markrad	0:cdf462088d13	641	/* Parse netscape certificate type */
markrad	0:cdf462088d13	642	if( ( ret = x509_get_ns_cert_type( p, end_ext_octet,
markrad	0:cdf462088d13	643	&crt->ns_cert_type ) ) != 0 )
markrad	0:cdf462088d13	644	return( ret );
markrad	0:cdf462088d13	645	break;
markrad	0:cdf462088d13	646
markrad	0:cdf462088d13	647	default:
markrad	0:cdf462088d13	648	return( MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE );
markrad	0:cdf462088d13	649	}
markrad	0:cdf462088d13	650	}
markrad	0:cdf462088d13	651
markrad	0:cdf462088d13	652	if( *p != end )
markrad	0:cdf462088d13	653	return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
markrad	0:cdf462088d13	654	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
markrad	0:cdf462088d13	655
markrad	0:cdf462088d13	656	return( 0 );
markrad	0:cdf462088d13	657	}
markrad	0:cdf462088d13	658
markrad	0:cdf462088d13	659	/*
markrad	0:cdf462088d13	660	* Parse and fill a single X.509 certificate in DER format
markrad	0:cdf462088d13	661	*/
markrad	0:cdf462088d13	662	static int x509_crt_parse_der_core( mbedtls_x509_crt crt, const unsigned char buf,
markrad	0:cdf462088d13	663	size_t buflen )
markrad	0:cdf462088d13	664	{
markrad	0:cdf462088d13	665	int ret;
markrad	0:cdf462088d13	666	size_t len;
markrad	0:cdf462088d13	667	unsigned char p, end, *crt_end;
markrad	0:cdf462088d13	668	mbedtls_x509_buf sig_params1, sig_params2, sig_oid2;
markrad	0:cdf462088d13	669
markrad	0:cdf462088d13	670	memset( &sig_params1, 0, sizeof( mbedtls_x509_buf ) );
markrad	0:cdf462088d13	671	memset( &sig_params2, 0, sizeof( mbedtls_x509_buf ) );
markrad	0:cdf462088d13	672	memset( &sig_oid2, 0, sizeof( mbedtls_x509_buf ) );
markrad	0:cdf462088d13	673
markrad	0:cdf462088d13	674	/*
markrad	0:cdf462088d13	675	* Check for valid input
markrad	0:cdf462088d13	676	*/
markrad	0:cdf462088d13	677	if( crt == NULL \|\| buf == NULL )
markrad	0:cdf462088d13	678	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
markrad	0:cdf462088d13	679
markrad	0:cdf462088d13	680	// Use the original buffer until we figure out actual length
markrad	0:cdf462088d13	681	p = (unsigned char*) buf;
markrad	0:cdf462088d13	682	len = buflen;
markrad	0:cdf462088d13	683	end = p + len;
markrad	0:cdf462088d13	684
markrad	0:cdf462088d13	685	/*
markrad	0:cdf462088d13	686	* Certificate ::= SEQUENCE {
markrad	0:cdf462088d13	687	* tbsCertificate TBSCertificate,
markrad	0:cdf462088d13	688	* signatureAlgorithm AlgorithmIdentifier,
markrad	0:cdf462088d13	689	* signatureValue BIT STRING }
markrad	0:cdf462088d13	690	*/
markrad	0:cdf462088d13	691	if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
markrad	0:cdf462088d13	692	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
markrad	0:cdf462088d13	693	{
markrad	0:cdf462088d13	694	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	695	return( MBEDTLS_ERR_X509_INVALID_FORMAT );
markrad	0:cdf462088d13	696	}
markrad	0:cdf462088d13	697
markrad	0:cdf462088d13	698	if( len > (size_t) ( end - p ) )
markrad	0:cdf462088d13	699	{
markrad	0:cdf462088d13	700	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	701	return( MBEDTLS_ERR_X509_INVALID_FORMAT +
markrad	0:cdf462088d13	702	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
markrad	0:cdf462088d13	703	}
markrad	0:cdf462088d13	704	crt_end = p + len;
markrad	0:cdf462088d13	705
markrad	0:cdf462088d13	706	// Create and populate a new buffer for the raw field
markrad	0:cdf462088d13	707	crt->raw.len = crt_end - buf;
markrad	0:cdf462088d13	708	crt->raw.p = p = mbedtls_calloc( 1, crt->raw.len );
markrad	0:cdf462088d13	709	if( p == NULL )
markrad	0:cdf462088d13	710	return( MBEDTLS_ERR_X509_ALLOC_FAILED );
markrad	0:cdf462088d13	711
markrad	0:cdf462088d13	712	memcpy( p, buf, crt->raw.len );
markrad	0:cdf462088d13	713
markrad	0:cdf462088d13	714	// Direct pointers to the new buffer
markrad	0:cdf462088d13	715	p += crt->raw.len - len;
markrad	0:cdf462088d13	716	end = crt_end = p + len;
markrad	0:cdf462088d13	717
markrad	0:cdf462088d13	718	/*
markrad	0:cdf462088d13	719	* TBSCertificate ::= SEQUENCE {
markrad	0:cdf462088d13	720	*/
markrad	0:cdf462088d13	721	crt->tbs.p = p;
markrad	0:cdf462088d13	722
markrad	0:cdf462088d13	723	if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
markrad	0:cdf462088d13	724	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
markrad	0:cdf462088d13	725	{
markrad	0:cdf462088d13	726	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	727	return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
markrad	0:cdf462088d13	728	}
markrad	0:cdf462088d13	729
markrad	0:cdf462088d13	730	end = p + len;
markrad	0:cdf462088d13	731	crt->tbs.len = end - crt->tbs.p;
markrad	0:cdf462088d13	732
markrad	0:cdf462088d13	733	/*
markrad	0:cdf462088d13	734	* Version ::= INTEGER { v1(0), v2(1), v3(2) }
markrad	0:cdf462088d13	735	*
markrad	0:cdf462088d13	736	* CertificateSerialNumber ::= INTEGER
markrad	0:cdf462088d13	737	*
markrad	0:cdf462088d13	738	* signature AlgorithmIdentifier
markrad	0:cdf462088d13	739	*/
markrad	0:cdf462088d13	740	if( ( ret = x509_get_version( &p, end, &crt->version ) ) != 0 \|\|
markrad	0:cdf462088d13	741	( ret = mbedtls_x509_get_serial( &p, end, &crt->serial ) ) != 0 \|\|
markrad	0:cdf462088d13	742	( ret = mbedtls_x509_get_alg( &p, end, &crt->sig_oid,
markrad	0:cdf462088d13	743	&sig_params1 ) ) != 0 )
markrad	0:cdf462088d13	744	{
markrad	0:cdf462088d13	745	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	746	return( ret );
markrad	0:cdf462088d13	747	}
markrad	0:cdf462088d13	748
markrad	0:cdf462088d13	749	crt->version++;
markrad	0:cdf462088d13	750
markrad	0:cdf462088d13	751	if( crt->version > 3 )
markrad	0:cdf462088d13	752	{
markrad	0:cdf462088d13	753	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	754	return( MBEDTLS_ERR_X509_UNKNOWN_VERSION );
markrad	0:cdf462088d13	755	}
markrad	0:cdf462088d13	756
markrad	0:cdf462088d13	757	if( ( ret = mbedtls_x509_get_sig_alg( &crt->sig_oid, &sig_params1,
markrad	0:cdf462088d13	758	&crt->sig_md, &crt->sig_pk,
markrad	0:cdf462088d13	759	&crt->sig_opts ) ) != 0 )
markrad	0:cdf462088d13	760	{
markrad	0:cdf462088d13	761	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	762	return( ret );
markrad	0:cdf462088d13	763	}
markrad	0:cdf462088d13	764
markrad	0:cdf462088d13	765	/*
markrad	0:cdf462088d13	766	* issuer Name
markrad	0:cdf462088d13	767	*/
markrad	0:cdf462088d13	768	crt->issuer_raw.p = p;
markrad	0:cdf462088d13	769
markrad	0:cdf462088d13	770	if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
markrad	0:cdf462088d13	771	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
markrad	0:cdf462088d13	772	{
markrad	0:cdf462088d13	773	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	774	return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
markrad	0:cdf462088d13	775	}
markrad	0:cdf462088d13	776
markrad	0:cdf462088d13	777	if( ( ret = mbedtls_x509_get_name( &p, p + len, &crt->issuer ) ) != 0 )
markrad	0:cdf462088d13	778	{
markrad	0:cdf462088d13	779	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	780	return( ret );
markrad	0:cdf462088d13	781	}
markrad	0:cdf462088d13	782
markrad	0:cdf462088d13	783	crt->issuer_raw.len = p - crt->issuer_raw.p;
markrad	0:cdf462088d13	784
markrad	0:cdf462088d13	785	/*
markrad	0:cdf462088d13	786	* Validity ::= SEQUENCE {
markrad	0:cdf462088d13	787	* notBefore Time,
markrad	0:cdf462088d13	788	* notAfter Time }
markrad	0:cdf462088d13	789	*
markrad	0:cdf462088d13	790	*/
markrad	0:cdf462088d13	791	if( ( ret = x509_get_dates( &p, end, &crt->valid_from,
markrad	0:cdf462088d13	792	&crt->valid_to ) ) != 0 )
markrad	0:cdf462088d13	793	{
markrad	0:cdf462088d13	794	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	795	return( ret );
markrad	0:cdf462088d13	796	}
markrad	0:cdf462088d13	797
markrad	0:cdf462088d13	798	/*
markrad	0:cdf462088d13	799	* subject Name
markrad	0:cdf462088d13	800	*/
markrad	0:cdf462088d13	801	crt->subject_raw.p = p;
markrad	0:cdf462088d13	802
markrad	0:cdf462088d13	803	if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
markrad	0:cdf462088d13	804	MBEDTLS_ASN1_CONSTRUCTED \| MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
markrad	0:cdf462088d13	805	{
markrad	0:cdf462088d13	806	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	807	return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
markrad	0:cdf462088d13	808	}
markrad	0:cdf462088d13	809
markrad	0:cdf462088d13	810	if( len && ( ret = mbedtls_x509_get_name( &p, p + len, &crt->subject ) ) != 0 )
markrad	0:cdf462088d13	811	{
markrad	0:cdf462088d13	812	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	813	return( ret );
markrad	0:cdf462088d13	814	}
markrad	0:cdf462088d13	815
markrad	0:cdf462088d13	816	crt->subject_raw.len = p - crt->subject_raw.p;
markrad	0:cdf462088d13	817
markrad	0:cdf462088d13	818	/*
markrad	0:cdf462088d13	819	* SubjectPublicKeyInfo
markrad	0:cdf462088d13	820	*/
markrad	0:cdf462088d13	821	if( ( ret = mbedtls_pk_parse_subpubkey( &p, end, &crt->pk ) ) != 0 )
markrad	0:cdf462088d13	822	{
markrad	0:cdf462088d13	823	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	824	return( ret );
markrad	0:cdf462088d13	825	}
markrad	0:cdf462088d13	826
markrad	0:cdf462088d13	827	/*
markrad	0:cdf462088d13	828	* issuerUniqueID [1] IMPLICIT UniqueIdentifier OPTIONAL,
markrad	0:cdf462088d13	829	* -- If present, version shall be v2 or v3
markrad	0:cdf462088d13	830	* subjectUniqueID [2] IMPLICIT UniqueIdentifier OPTIONAL,
markrad	0:cdf462088d13	831	* -- If present, version shall be v2 or v3
markrad	0:cdf462088d13	832	* extensions [3] EXPLICIT Extensions OPTIONAL
markrad	0:cdf462088d13	833	* -- If present, version shall be v3
markrad	0:cdf462088d13	834	*/
markrad	0:cdf462088d13	835	if( crt->version == 2 \|\| crt->version == 3 )
markrad	0:cdf462088d13	836	{
markrad	0:cdf462088d13	837	ret = x509_get_uid( &p, end, &crt->issuer_id, 1 );
markrad	0:cdf462088d13	838	if( ret != 0 )
markrad	0:cdf462088d13	839	{
markrad	0:cdf462088d13	840	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	841	return( ret );
markrad	0:cdf462088d13	842	}
markrad	0:cdf462088d13	843	}
markrad	0:cdf462088d13	844
markrad	0:cdf462088d13	845	if( crt->version == 2 \|\| crt->version == 3 )
markrad	0:cdf462088d13	846	{
markrad	0:cdf462088d13	847	ret = x509_get_uid( &p, end, &crt->subject_id, 2 );
markrad	0:cdf462088d13	848	if( ret != 0 )
markrad	0:cdf462088d13	849	{
markrad	0:cdf462088d13	850	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	851	return( ret );
markrad	0:cdf462088d13	852	}
markrad	0:cdf462088d13	853	}
markrad	0:cdf462088d13	854
markrad	0:cdf462088d13	855	#if !defined(MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3)
markrad	0:cdf462088d13	856	if( crt->version == 3 )
markrad	0:cdf462088d13	857	#endif
markrad	0:cdf462088d13	858	{
markrad	0:cdf462088d13	859	ret = x509_get_crt_ext( &p, end, crt );
markrad	0:cdf462088d13	860	if( ret != 0 )
markrad	0:cdf462088d13	861	{
markrad	0:cdf462088d13	862	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	863	return( ret );
markrad	0:cdf462088d13	864	}
markrad	0:cdf462088d13	865	}
markrad	0:cdf462088d13	866
markrad	0:cdf462088d13	867	if( p != end )
markrad	0:cdf462088d13	868	{
markrad	0:cdf462088d13	869	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	870	return( MBEDTLS_ERR_X509_INVALID_FORMAT +
markrad	0:cdf462088d13	871	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
markrad	0:cdf462088d13	872	}
markrad	0:cdf462088d13	873
markrad	0:cdf462088d13	874	end = crt_end;
markrad	0:cdf462088d13	875
markrad	0:cdf462088d13	876	/*
markrad	0:cdf462088d13	877	* }
markrad	0:cdf462088d13	878	* -- end of TBSCertificate
markrad	0:cdf462088d13	879	*
markrad	0:cdf462088d13	880	* signatureAlgorithm AlgorithmIdentifier,
markrad	0:cdf462088d13	881	* signatureValue BIT STRING
markrad	0:cdf462088d13	882	*/
markrad	0:cdf462088d13	883	if( ( ret = mbedtls_x509_get_alg( &p, end, &sig_oid2, &sig_params2 ) ) != 0 )
markrad	0:cdf462088d13	884	{
markrad	0:cdf462088d13	885	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	886	return( ret );
markrad	0:cdf462088d13	887	}
markrad	0:cdf462088d13	888
markrad	0:cdf462088d13	889	if( crt->sig_oid.len != sig_oid2.len \|\|
markrad	0:cdf462088d13	890	memcmp( crt->sig_oid.p, sig_oid2.p, crt->sig_oid.len ) != 0 \|\|
markrad	0:cdf462088d13	891	sig_params1.len != sig_params2.len \|\|
markrad	0:cdf462088d13	892	( sig_params1.len != 0 &&
markrad	0:cdf462088d13	893	memcmp( sig_params1.p, sig_params2.p, sig_params1.len ) != 0 ) )
markrad	0:cdf462088d13	894	{
markrad	0:cdf462088d13	895	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	896	return( MBEDTLS_ERR_X509_SIG_MISMATCH );
markrad	0:cdf462088d13	897	}
markrad	0:cdf462088d13	898
markrad	0:cdf462088d13	899	if( ( ret = mbedtls_x509_get_sig( &p, end, &crt->sig ) ) != 0 )
markrad	0:cdf462088d13	900	{
markrad	0:cdf462088d13	901	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	902	return( ret );
markrad	0:cdf462088d13	903	}
markrad	0:cdf462088d13	904
markrad	0:cdf462088d13	905	if( p != end )
markrad	0:cdf462088d13	906	{
markrad	0:cdf462088d13	907	mbedtls_x509_crt_free( crt );
markrad	0:cdf462088d13	908	return( MBEDTLS_ERR_X509_INVALID_FORMAT +
markrad	0:cdf462088d13	909	MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
markrad	0:cdf462088d13	910	}
markrad	0:cdf462088d13	911
markrad	0:cdf462088d13	912	return( 0 );
markrad	0:cdf462088d13	913	}
markrad	0:cdf462088d13	914
markrad	0:cdf462088d13	915	/*
markrad	0:cdf462088d13	916	* Parse one X.509 certificate in DER format from a buffer and add them to a
markrad	0:cdf462088d13	917	* chained list
markrad	0:cdf462088d13	918	*/
markrad	0:cdf462088d13	919	int mbedtls_x509_crt_parse_der( mbedtls_x509_crt chain, const unsigned char buf,
markrad	0:cdf462088d13	920	size_t buflen )
markrad	0:cdf462088d13	921	{
markrad	0:cdf462088d13	922	int ret;
markrad	0:cdf462088d13	923	mbedtls_x509_crt crt = chain, prev = NULL;
markrad	0:cdf462088d13	924
markrad	0:cdf462088d13	925	/*
markrad	0:cdf462088d13	926	* Check for valid input
markrad	0:cdf462088d13	927	*/
markrad	0:cdf462088d13	928	if( crt == NULL \|\| buf == NULL )
markrad	0:cdf462088d13	929	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
markrad	0:cdf462088d13	930
markrad	0:cdf462088d13	931	while( crt->version != 0 && crt->next != NULL )
markrad	0:cdf462088d13	932	{
markrad	0:cdf462088d13	933	prev = crt;
markrad	0:cdf462088d13	934	crt = crt->next;
markrad	0:cdf462088d13	935	}
markrad	0:cdf462088d13	936
markrad	0:cdf462088d13	937	/*
markrad	0:cdf462088d13	938	* Add new certificate on the end of the chain if needed.
markrad	0:cdf462088d13	939	*/
markrad	0:cdf462088d13	940	if( crt->version != 0 && crt->next == NULL )
markrad	0:cdf462088d13	941	{
markrad	0:cdf462088d13	942	crt->next = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) );
markrad	0:cdf462088d13	943
markrad	0:cdf462088d13	944	if( crt->next == NULL )
markrad	0:cdf462088d13	945	return( MBEDTLS_ERR_X509_ALLOC_FAILED );
markrad	0:cdf462088d13	946
markrad	0:cdf462088d13	947	prev = crt;
markrad	0:cdf462088d13	948	mbedtls_x509_crt_init( crt->next );
markrad	0:cdf462088d13	949	crt = crt->next;
markrad	0:cdf462088d13	950	}
markrad	0:cdf462088d13	951
markrad	0:cdf462088d13	952	if( ( ret = x509_crt_parse_der_core( crt, buf, buflen ) ) != 0 )
markrad	0:cdf462088d13	953	{
markrad	0:cdf462088d13	954	if( prev )
markrad	0:cdf462088d13	955	prev->next = NULL;
markrad	0:cdf462088d13	956
markrad	0:cdf462088d13	957	if( crt != chain )
markrad	0:cdf462088d13	958	mbedtls_free( crt );
markrad	0:cdf462088d13	959
markrad	0:cdf462088d13	960	return( ret );
markrad	0:cdf462088d13	961	}
markrad	0:cdf462088d13	962
markrad	0:cdf462088d13	963	return( 0 );
markrad	0:cdf462088d13	964	}
markrad	0:cdf462088d13	965
markrad	0:cdf462088d13	966	/*
markrad	0:cdf462088d13	967	* Parse one or more PEM certificates from a buffer and add them to the chained
markrad	0:cdf462088d13	968	* list
markrad	0:cdf462088d13	969	*/
markrad	0:cdf462088d13	970	int mbedtls_x509_crt_parse( mbedtls_x509_crt chain, const unsigned char buf, size_t buflen )
markrad	0:cdf462088d13	971	{
markrad	0:cdf462088d13	972	int success = 0, first_error = 0, total_failed = 0;
markrad	0:cdf462088d13	973	#if defined(MBEDTLS_PEM_PARSE_C)
markrad	0:cdf462088d13	974	int buf_format = MBEDTLS_X509_FORMAT_DER;
markrad	0:cdf462088d13	975	#endif
markrad	0:cdf462088d13	976
markrad	0:cdf462088d13	977	/*
markrad	0:cdf462088d13	978	* Check for valid input
markrad	0:cdf462088d13	979	*/
markrad	0:cdf462088d13	980	if( chain == NULL \|\| buf == NULL )
markrad	0:cdf462088d13	981	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
markrad	0:cdf462088d13	982
markrad	0:cdf462088d13	983	/*
markrad	0:cdf462088d13	984	* Determine buffer content. Buffer contains either one DER certificate or
markrad	0:cdf462088d13	985	* one or more PEM certificates.
markrad	0:cdf462088d13	986	*/
markrad	0:cdf462088d13	987	#if defined(MBEDTLS_PEM_PARSE_C)
markrad	0:cdf462088d13	988	if( buflen != 0 && buf[buflen - 1] == '\0' &&
markrad	0:cdf462088d13	989	strstr( (const char *) buf, "-----BEGIN CERTIFICATE-----" ) != NULL )
markrad	0:cdf462088d13	990	{
markrad	0:cdf462088d13	991	buf_format = MBEDTLS_X509_FORMAT_PEM;
markrad	0:cdf462088d13	992	}
markrad	0:cdf462088d13	993
markrad	0:cdf462088d13	994	if( buf_format == MBEDTLS_X509_FORMAT_DER )
markrad	0:cdf462088d13	995	return mbedtls_x509_crt_parse_der( chain, buf, buflen );
markrad	0:cdf462088d13	996	#else
markrad	0:cdf462088d13	997	return mbedtls_x509_crt_parse_der( chain, buf, buflen );
markrad	0:cdf462088d13	998	#endif
markrad	0:cdf462088d13	999
markrad	0:cdf462088d13	1000	#if defined(MBEDTLS_PEM_PARSE_C)
markrad	0:cdf462088d13	1001	if( buf_format == MBEDTLS_X509_FORMAT_PEM )
markrad	0:cdf462088d13	1002	{
markrad	0:cdf462088d13	1003	int ret;
markrad	0:cdf462088d13	1004	mbedtls_pem_context pem;
markrad	0:cdf462088d13	1005
markrad	0:cdf462088d13	1006	/* 1 rather than 0 since the terminating NULL byte is counted in */
markrad	0:cdf462088d13	1007	while( buflen > 1 )
markrad	0:cdf462088d13	1008	{
markrad	0:cdf462088d13	1009	size_t use_len;
markrad	0:cdf462088d13	1010	mbedtls_pem_init( &pem );
markrad	0:cdf462088d13	1011
markrad	0:cdf462088d13	1012	/* If we get there, we know the string is null-terminated */
markrad	0:cdf462088d13	1013	ret = mbedtls_pem_read_buffer( &pem,
markrad	0:cdf462088d13	1014	"-----BEGIN CERTIFICATE-----",
markrad	0:cdf462088d13	1015	"-----END CERTIFICATE-----",
markrad	0:cdf462088d13	1016	buf, NULL, 0, &use_len );
markrad	0:cdf462088d13	1017
markrad	0:cdf462088d13	1018	if( ret == 0 )
markrad	0:cdf462088d13	1019	{
markrad	0:cdf462088d13	1020	/*
markrad	0:cdf462088d13	1021	* Was PEM encoded
markrad	0:cdf462088d13	1022	*/
markrad	0:cdf462088d13	1023	buflen -= use_len;
markrad	0:cdf462088d13	1024	buf += use_len;
markrad	0:cdf462088d13	1025	}
markrad	0:cdf462088d13	1026	else if( ret == MBEDTLS_ERR_PEM_BAD_INPUT_DATA )
markrad	0:cdf462088d13	1027	{
markrad	0:cdf462088d13	1028	return( ret );
markrad	0:cdf462088d13	1029	}
markrad	0:cdf462088d13	1030	else if( ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
markrad	0:cdf462088d13	1031	{
markrad	0:cdf462088d13	1032	mbedtls_pem_free( &pem );
markrad	0:cdf462088d13	1033
markrad	0:cdf462088d13	1034	/*
markrad	0:cdf462088d13	1035	* PEM header and footer were found
markrad	0:cdf462088d13	1036	*/
markrad	0:cdf462088d13	1037	buflen -= use_len;
markrad	0:cdf462088d13	1038	buf += use_len;
markrad	0:cdf462088d13	1039
markrad	0:cdf462088d13	1040	if( first_error == 0 )
markrad	0:cdf462088d13	1041	first_error = ret;
markrad	0:cdf462088d13	1042
markrad	0:cdf462088d13	1043	total_failed++;
markrad	0:cdf462088d13	1044	continue;
markrad	0:cdf462088d13	1045	}
markrad	0:cdf462088d13	1046	else
markrad	0:cdf462088d13	1047	break;
markrad	0:cdf462088d13	1048
markrad	0:cdf462088d13	1049	ret = mbedtls_x509_crt_parse_der( chain, pem.buf, pem.buflen );
markrad	0:cdf462088d13	1050
markrad	0:cdf462088d13	1051	mbedtls_pem_free( &pem );
markrad	0:cdf462088d13	1052
markrad	0:cdf462088d13	1053	if( ret != 0 )
markrad	0:cdf462088d13	1054	{
markrad	0:cdf462088d13	1055	/*
markrad	0:cdf462088d13	1056	* Quit parsing on a memory error
markrad	0:cdf462088d13	1057	*/
markrad	0:cdf462088d13	1058	if( ret == MBEDTLS_ERR_X509_ALLOC_FAILED )
markrad	0:cdf462088d13	1059	return( ret );
markrad	0:cdf462088d13	1060
markrad	0:cdf462088d13	1061	if( first_error == 0 )
markrad	0:cdf462088d13	1062	first_error = ret;
markrad	0:cdf462088d13	1063
markrad	0:cdf462088d13	1064	total_failed++;
markrad	0:cdf462088d13	1065	continue;
markrad	0:cdf462088d13	1066	}
markrad	0:cdf462088d13	1067
markrad	0:cdf462088d13	1068	success = 1;
markrad	0:cdf462088d13	1069	}
markrad	0:cdf462088d13	1070	}
markrad	0:cdf462088d13	1071
markrad	0:cdf462088d13	1072	if( success )
markrad	0:cdf462088d13	1073	return( total_failed );
markrad	0:cdf462088d13	1074	else if( first_error )
markrad	0:cdf462088d13	1075	return( first_error );
markrad	0:cdf462088d13	1076	else
markrad	0:cdf462088d13	1077	return( MBEDTLS_ERR_X509_CERT_UNKNOWN_FORMAT );
markrad	0:cdf462088d13	1078	#endif /* MBEDTLS_PEM_PARSE_C */
markrad	0:cdf462088d13	1079	}
markrad	0:cdf462088d13	1080
markrad	0:cdf462088d13	1081	#if defined(MBEDTLS_FS_IO)
markrad	0:cdf462088d13	1082	/*
markrad	0:cdf462088d13	1083	* Load one or more certificates and add them to the chained list
markrad	0:cdf462088d13	1084	*/
markrad	0:cdf462088d13	1085	int mbedtls_x509_crt_parse_file( mbedtls_x509_crt chain, const char path )
markrad	0:cdf462088d13	1086	{
markrad	0:cdf462088d13	1087	int ret;
markrad	0:cdf462088d13	1088	size_t n;
markrad	0:cdf462088d13	1089	unsigned char *buf;
markrad	0:cdf462088d13	1090
markrad	0:cdf462088d13	1091	if( ( ret = mbedtls_pk_load_file( path, &buf, &n ) ) != 0 )
markrad	0:cdf462088d13	1092	return( ret );
markrad	0:cdf462088d13	1093
markrad	0:cdf462088d13	1094	ret = mbedtls_x509_crt_parse( chain, buf, n );
markrad	0:cdf462088d13	1095
markrad	0:cdf462088d13	1096	mbedtls_zeroize( buf, n );
markrad	0:cdf462088d13	1097	mbedtls_free( buf );
markrad	0:cdf462088d13	1098
markrad	0:cdf462088d13	1099	return( ret );
markrad	0:cdf462088d13	1100	}
markrad	0:cdf462088d13	1101
markrad	0:cdf462088d13	1102	int mbedtls_x509_crt_parse_path( mbedtls_x509_crt chain, const char path )
markrad	0:cdf462088d13	1103	{
markrad	0:cdf462088d13	1104	int ret = 0;
markrad	0:cdf462088d13	1105	#if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
markrad	0:cdf462088d13	1106	int w_ret;
markrad	0:cdf462088d13	1107	WCHAR szDir[MAX_PATH];
markrad	0:cdf462088d13	1108	char filename[MAX_PATH];
markrad	0:cdf462088d13	1109	char *p;
markrad	0:cdf462088d13	1110	size_t len = strlen( path );
markrad	0:cdf462088d13	1111
markrad	0:cdf462088d13	1112	WIN32_FIND_DATAW file_data;
markrad	0:cdf462088d13	1113	HANDLE hFind;
markrad	0:cdf462088d13	1114
markrad	0:cdf462088d13	1115	if( len > MAX_PATH - 3 )
markrad	0:cdf462088d13	1116	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
markrad	0:cdf462088d13	1117
markrad	0:cdf462088d13	1118	memset( szDir, 0, sizeof(szDir) );
markrad	0:cdf462088d13	1119	memset( filename, 0, MAX_PATH );
markrad	0:cdf462088d13	1120	memcpy( filename, path, len );
markrad	0:cdf462088d13	1121	filename[len++] = '\\';
markrad	0:cdf462088d13	1122	p = filename + len;
markrad	0:cdf462088d13	1123	filename[len++] = '*';
markrad	0:cdf462088d13	1124
markrad	0:cdf462088d13	1125	w_ret = MultiByteToWideChar( CP_ACP, 0, filename, (int)len, szDir,
markrad	0:cdf462088d13	1126	MAX_PATH - 3 );
markrad	0:cdf462088d13	1127	if( w_ret == 0 )
markrad	0:cdf462088d13	1128	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
markrad	0:cdf462088d13	1129
markrad	0:cdf462088d13	1130	hFind = FindFirstFileW( szDir, &file_data );
markrad	0:cdf462088d13	1131	if( hFind == INVALID_HANDLE_VALUE )
markrad	0:cdf462088d13	1132	return( MBEDTLS_ERR_X509_FILE_IO_ERROR );
markrad	0:cdf462088d13	1133
markrad	0:cdf462088d13	1134	len = MAX_PATH - len;
markrad	0:cdf462088d13	1135	do
markrad	0:cdf462088d13	1136	{
markrad	0:cdf462088d13	1137	memset( p, 0, len );
markrad	0:cdf462088d13	1138
markrad	0:cdf462088d13	1139	if( file_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
markrad	0:cdf462088d13	1140	continue;
markrad	0:cdf462088d13	1141
markrad	0:cdf462088d13	1142	w_ret = WideCharToMultiByte( CP_ACP, 0, file_data.cFileName,
markrad	0:cdf462088d13	1143	lstrlenW( file_data.cFileName ),
markrad	0:cdf462088d13	1144	p, (int) len - 1,
markrad	0:cdf462088d13	1145	NULL, NULL );
markrad	0:cdf462088d13	1146	if( w_ret == 0 )
markrad	0:cdf462088d13	1147	return( MBEDTLS_ERR_X509_FILE_IO_ERROR );
markrad	0:cdf462088d13	1148
markrad	0:cdf462088d13	1149	w_ret = mbedtls_x509_crt_parse_file( chain, filename );
markrad	0:cdf462088d13	1150	if( w_ret < 0 )
markrad	0:cdf462088d13	1151	ret++;
markrad	0:cdf462088d13	1152	else
markrad	0:cdf462088d13	1153	ret += w_ret;
markrad	0:cdf462088d13	1154	}
markrad	0:cdf462088d13	1155	while( FindNextFileW( hFind, &file_data ) != 0 );
markrad	0:cdf462088d13	1156
markrad	0:cdf462088d13	1157	if( GetLastError() != ERROR_NO_MORE_FILES )
markrad	0:cdf462088d13	1158	ret = MBEDTLS_ERR_X509_FILE_IO_ERROR;
markrad	0:cdf462088d13	1159
markrad	0:cdf462088d13	1160	FindClose( hFind );
markrad	0:cdf462088d13	1161	#else /* _WIN32 */
markrad	0:cdf462088d13	1162	int t_ret;
markrad	0:cdf462088d13	1163	int snp_ret;
markrad	0:cdf462088d13	1164	struct stat sb;
markrad	0:cdf462088d13	1165	struct dirent *entry;
markrad	0:cdf462088d13	1166	char entry_name[MBEDTLS_X509_MAX_FILE_PATH_LEN];
markrad	0:cdf462088d13	1167	DIR *dir = opendir( path );
markrad	0:cdf462088d13	1168
markrad	0:cdf462088d13	1169	if( dir == NULL )
markrad	0:cdf462088d13	1170	return( MBEDTLS_ERR_X509_FILE_IO_ERROR );
markrad	0:cdf462088d13	1171
markrad	0:cdf462088d13	1172	#if defined(MBEDTLS_THREADING_PTHREAD)
markrad	0:cdf462088d13	1173	if( ( ret = mbedtls_mutex_lock( &mbedtls_threading_readdir_mutex ) ) != 0 )
markrad	0:cdf462088d13	1174	{
markrad	0:cdf462088d13	1175	closedir( dir );
markrad	0:cdf462088d13	1176	return( ret );
markrad	0:cdf462088d13	1177	}
markrad	0:cdf462088d13	1178	#endif
markrad	0:cdf462088d13	1179
markrad	0:cdf462088d13	1180	while( ( entry = readdir( dir ) ) != NULL )
markrad	0:cdf462088d13	1181	{
markrad	0:cdf462088d13	1182	snp_ret = mbedtls_snprintf( entry_name, sizeof entry_name,
markrad	0:cdf462088d13	1183	"%s/%s", path, entry->d_name );
markrad	0:cdf462088d13	1184
markrad	0:cdf462088d13	1185	if( snp_ret < 0 \|\| (size_t)snp_ret >= sizeof entry_name )
markrad	0:cdf462088d13	1186	{
markrad	0:cdf462088d13	1187	ret = MBEDTLS_ERR_X509_BUFFER_TOO_SMALL;
markrad	0:cdf462088d13	1188	goto cleanup;
markrad	0:cdf462088d13	1189	}
markrad	0:cdf462088d13	1190	else if( stat( entry_name, &sb ) == -1 )
markrad	0:cdf462088d13	1191	{
markrad	0:cdf462088d13	1192	ret = MBEDTLS_ERR_X509_FILE_IO_ERROR;
markrad	0:cdf462088d13	1193	goto cleanup;
markrad	0:cdf462088d13	1194	}
markrad	0:cdf462088d13	1195
markrad	0:cdf462088d13	1196	if( !S_ISREG( sb.st_mode ) )
markrad	0:cdf462088d13	1197	continue;
markrad	0:cdf462088d13	1198
markrad	0:cdf462088d13	1199	// Ignore parse errors
markrad	0:cdf462088d13	1200	//
markrad	0:cdf462088d13	1201	t_ret = mbedtls_x509_crt_parse_file( chain, entry_name );
markrad	0:cdf462088d13	1202	if( t_ret < 0 )
markrad	0:cdf462088d13	1203	ret++;
markrad	0:cdf462088d13	1204	else
markrad	0:cdf462088d13	1205	ret += t_ret;
markrad	0:cdf462088d13	1206	}
markrad	0:cdf462088d13	1207
markrad	0:cdf462088d13	1208	cleanup:
markrad	0:cdf462088d13	1209	closedir( dir );
markrad	0:cdf462088d13	1210
markrad	0:cdf462088d13	1211	#if defined(MBEDTLS_THREADING_PTHREAD)
markrad	0:cdf462088d13	1212	if( mbedtls_mutex_unlock( &mbedtls_threading_readdir_mutex ) != 0 )
markrad	0:cdf462088d13	1213	ret = MBEDTLS_ERR_THREADING_MUTEX_ERROR;
markrad	0:cdf462088d13	1214	#endif
markrad	0:cdf462088d13	1215
markrad	0:cdf462088d13	1216	#endif /* _WIN32 */
markrad	0:cdf462088d13	1217
markrad	0:cdf462088d13	1218	return( ret );
markrad	0:cdf462088d13	1219	}
markrad	0:cdf462088d13	1220	#endif /* MBEDTLS_FS_IO */
markrad	0:cdf462088d13	1221
markrad	0:cdf462088d13	1222	static int x509_info_subject_alt_name( char *buf, size_t size,
markrad	0:cdf462088d13	1223	const mbedtls_x509_sequence *subject_alt_name )
markrad	0:cdf462088d13	1224	{
markrad	0:cdf462088d13	1225	size_t i;
markrad	0:cdf462088d13	1226	size_t n = *size;
markrad	0:cdf462088d13	1227	char p = buf;
markrad	0:cdf462088d13	1228	const mbedtls_x509_sequence *cur = subject_alt_name;
markrad	0:cdf462088d13	1229	const char *sep = "";
markrad	0:cdf462088d13	1230	size_t sep_len = 0;
markrad	0:cdf462088d13	1231
markrad	0:cdf462088d13	1232	while( cur != NULL )
markrad	0:cdf462088d13	1233	{
markrad	0:cdf462088d13	1234	if( cur->buf.len + sep_len >= n )
markrad	0:cdf462088d13	1235	{
markrad	0:cdf462088d13	1236	*p = '\0';
markrad	0:cdf462088d13	1237	return( MBEDTLS_ERR_X509_BUFFER_TOO_SMALL );
markrad	0:cdf462088d13	1238	}
markrad	0:cdf462088d13	1239
markrad	0:cdf462088d13	1240	n -= cur->buf.len + sep_len;
markrad	0:cdf462088d13	1241	for( i = 0; i < sep_len; i++ )
markrad	0:cdf462088d13	1242	*p++ = sep[i];
markrad	0:cdf462088d13	1243	for( i = 0; i < cur->buf.len; i++ )
markrad	0:cdf462088d13	1244	*p++ = cur->buf.p[i];
markrad	0:cdf462088d13	1245
markrad	0:cdf462088d13	1246	sep = ", ";
markrad	0:cdf462088d13	1247	sep_len = 2;
markrad	0:cdf462088d13	1248
markrad	0:cdf462088d13	1249	cur = cur->next;
markrad	0:cdf462088d13	1250	}
markrad	0:cdf462088d13	1251
markrad	0:cdf462088d13	1252	*p = '\0';
markrad	0:cdf462088d13	1253
markrad	0:cdf462088d13	1254	*size = n;
markrad	0:cdf462088d13	1255	*buf = p;
markrad	0:cdf462088d13	1256
markrad	0:cdf462088d13	1257	return( 0 );
markrad	0:cdf462088d13	1258	}
markrad	0:cdf462088d13	1259
markrad	0:cdf462088d13	1260	#define PRINT_ITEM(i) \
markrad	0:cdf462088d13	1261	{ \
markrad	0:cdf462088d13	1262	ret = mbedtls_snprintf( p, n, "%s" i, sep ); \
markrad	0:cdf462088d13	1263	MBEDTLS_X509_SAFE_SNPRINTF; \
markrad	0:cdf462088d13	1264	sep = ", "; \
markrad	0:cdf462088d13	1265	}
markrad	0:cdf462088d13	1266
markrad	0:cdf462088d13	1267	#define CERT_TYPE(type,name) \
markrad	0:cdf462088d13	1268	if( ns_cert_type & type ) \
markrad	0:cdf462088d13	1269	PRINT_ITEM( name );
markrad	0:cdf462088d13	1270
markrad	0:cdf462088d13	1271	static int x509_info_cert_type( char *buf, size_t size,
markrad	0:cdf462088d13	1272	unsigned char ns_cert_type )
markrad	0:cdf462088d13	1273	{
markrad	0:cdf462088d13	1274	int ret;
markrad	0:cdf462088d13	1275	size_t n = *size;
markrad	0:cdf462088d13	1276	char p = buf;
markrad	0:cdf462088d13	1277	const char *sep = "";
markrad	0:cdf462088d13	1278
markrad	0:cdf462088d13	1279	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_CLIENT, "SSL Client" );
markrad	0:cdf462088d13	1280	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_SERVER, "SSL Server" );
markrad	0:cdf462088d13	1281	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_EMAIL, "Email" );
markrad	0:cdf462088d13	1282	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING, "Object Signing" );
markrad	0:cdf462088d13	1283	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_RESERVED, "Reserved" );
markrad	0:cdf462088d13	1284	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_CA, "SSL CA" );
markrad	0:cdf462088d13	1285	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_EMAIL_CA, "Email CA" );
markrad	0:cdf462088d13	1286	CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING_CA, "Object Signing CA" );
markrad	0:cdf462088d13	1287
markrad	0:cdf462088d13	1288	*size = n;
markrad	0:cdf462088d13	1289	*buf = p;
markrad	0:cdf462088d13	1290
markrad	0:cdf462088d13	1291	return( 0 );
markrad	0:cdf462088d13	1292	}
markrad	0:cdf462088d13	1293
markrad	0:cdf462088d13	1294	#define KEY_USAGE(code,name) \
markrad	0:cdf462088d13	1295	if( key_usage & code ) \
markrad	0:cdf462088d13	1296	PRINT_ITEM( name );
markrad	0:cdf462088d13	1297
markrad	0:cdf462088d13	1298	static int x509_info_key_usage( char *buf, size_t size,
markrad	0:cdf462088d13	1299	unsigned int key_usage )
markrad	0:cdf462088d13	1300	{
markrad	0:cdf462088d13	1301	int ret;
markrad	0:cdf462088d13	1302	size_t n = *size;
markrad	0:cdf462088d13	1303	char p = buf;
markrad	0:cdf462088d13	1304	const char *sep = "";
markrad	0:cdf462088d13	1305
markrad	0:cdf462088d13	1306	KEY_USAGE( MBEDTLS_X509_KU_DIGITAL_SIGNATURE, "Digital Signature" );
markrad	0:cdf462088d13	1307	KEY_USAGE( MBEDTLS_X509_KU_NON_REPUDIATION, "Non Repudiation" );
markrad	0:cdf462088d13	1308	KEY_USAGE( MBEDTLS_X509_KU_KEY_ENCIPHERMENT, "Key Encipherment" );
markrad	0:cdf462088d13	1309	KEY_USAGE( MBEDTLS_X509_KU_DATA_ENCIPHERMENT, "Data Encipherment" );
markrad	0:cdf462088d13	1310	KEY_USAGE( MBEDTLS_X509_KU_KEY_AGREEMENT, "Key Agreement" );
markrad	0:cdf462088d13	1311	KEY_USAGE( MBEDTLS_X509_KU_KEY_CERT_SIGN, "Key Cert Sign" );
markrad	0:cdf462088d13	1312	KEY_USAGE( MBEDTLS_X509_KU_CRL_SIGN, "CRL Sign" );
markrad	0:cdf462088d13	1313	KEY_USAGE( MBEDTLS_X509_KU_ENCIPHER_ONLY, "Encipher Only" );
markrad	0:cdf462088d13	1314	KEY_USAGE( MBEDTLS_X509_KU_DECIPHER_ONLY, "Decipher Only" );
markrad	0:cdf462088d13	1315
markrad	0:cdf462088d13	1316	*size = n;
markrad	0:cdf462088d13	1317	*buf = p;
markrad	0:cdf462088d13	1318
markrad	0:cdf462088d13	1319	return( 0 );
markrad	0:cdf462088d13	1320	}
markrad	0:cdf462088d13	1321
markrad	0:cdf462088d13	1322	static int x509_info_ext_key_usage( char *buf, size_t size,
markrad	0:cdf462088d13	1323	const mbedtls_x509_sequence *extended_key_usage )
markrad	0:cdf462088d13	1324	{
markrad	0:cdf462088d13	1325	int ret;
markrad	0:cdf462088d13	1326	const char *desc;
markrad	0:cdf462088d13	1327	size_t n = *size;
markrad	0:cdf462088d13	1328	char p = buf;
markrad	0:cdf462088d13	1329	const mbedtls_x509_sequence *cur = extended_key_usage;
markrad	0:cdf462088d13	1330	const char *sep = "";
markrad	0:cdf462088d13	1331
markrad	0:cdf462088d13	1332	while( cur != NULL )
markrad	0:cdf462088d13	1333	{
markrad	0:cdf462088d13	1334	if( mbedtls_oid_get_extended_key_usage( &cur->buf, &desc ) != 0 )
markrad	0:cdf462088d13	1335	desc = "???";
markrad	0:cdf462088d13	1336
markrad	0:cdf462088d13	1337	ret = mbedtls_snprintf( p, n, "%s%s", sep, desc );
markrad	0:cdf462088d13	1338	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1339
markrad	0:cdf462088d13	1340	sep = ", ";
markrad	0:cdf462088d13	1341
markrad	0:cdf462088d13	1342	cur = cur->next;
markrad	0:cdf462088d13	1343	}
markrad	0:cdf462088d13	1344
markrad	0:cdf462088d13	1345	*size = n;
markrad	0:cdf462088d13	1346	*buf = p;
markrad	0:cdf462088d13	1347
markrad	0:cdf462088d13	1348	return( 0 );
markrad	0:cdf462088d13	1349	}
markrad	0:cdf462088d13	1350
markrad	0:cdf462088d13	1351	/*
markrad	0:cdf462088d13	1352	* Return an informational string about the certificate.
markrad	0:cdf462088d13	1353	*/
markrad	0:cdf462088d13	1354	#define BEFORE_COLON 18
markrad	0:cdf462088d13	1355	#define BC "18"
markrad	0:cdf462088d13	1356	int mbedtls_x509_crt_info( char buf, size_t size, const char prefix,
markrad	0:cdf462088d13	1357	const mbedtls_x509_crt *crt )
markrad	0:cdf462088d13	1358	{
markrad	0:cdf462088d13	1359	int ret;
markrad	0:cdf462088d13	1360	size_t n;
markrad	0:cdf462088d13	1361	char *p;
markrad	0:cdf462088d13	1362	char key_size_str[BEFORE_COLON];
markrad	0:cdf462088d13	1363
markrad	0:cdf462088d13	1364	p = buf;
markrad	0:cdf462088d13	1365	n = size;
markrad	0:cdf462088d13	1366
markrad	0:cdf462088d13	1367	if( NULL == crt )
markrad	0:cdf462088d13	1368	{
markrad	0:cdf462088d13	1369	ret = mbedtls_snprintf( p, n, "\nCertificate is uninitialised!\n" );
markrad	0:cdf462088d13	1370	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1371
markrad	0:cdf462088d13	1372	return( (int) ( size - n ) );
markrad	0:cdf462088d13	1373	}
markrad	0:cdf462088d13	1374
markrad	0:cdf462088d13	1375	ret = mbedtls_snprintf( p, n, "%scert. version : %d\n",
markrad	0:cdf462088d13	1376	prefix, crt->version );
markrad	0:cdf462088d13	1377	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1378	ret = mbedtls_snprintf( p, n, "%sserial number : ",
markrad	0:cdf462088d13	1379	prefix );
markrad	0:cdf462088d13	1380	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1381
markrad	0:cdf462088d13	1382	ret = mbedtls_x509_serial_gets( p, n, &crt->serial );
markrad	0:cdf462088d13	1383	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1384
markrad	0:cdf462088d13	1385	ret = mbedtls_snprintf( p, n, "\n%sissuer name : ", prefix );
markrad	0:cdf462088d13	1386	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1387	ret = mbedtls_x509_dn_gets( p, n, &crt->issuer );
markrad	0:cdf462088d13	1388	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1389
markrad	0:cdf462088d13	1390	ret = mbedtls_snprintf( p, n, "\n%ssubject name : ", prefix );
markrad	0:cdf462088d13	1391	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1392	ret = mbedtls_x509_dn_gets( p, n, &crt->subject );
markrad	0:cdf462088d13	1393	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1394
markrad	0:cdf462088d13	1395	ret = mbedtls_snprintf( p, n, "\n%sissued on : " \
markrad	0:cdf462088d13	1396	"%04d-%02d-%02d %02d:%02d:%02d", prefix,
markrad	0:cdf462088d13	1397	crt->valid_from.year, crt->valid_from.mon,
markrad	0:cdf462088d13	1398	crt->valid_from.day, crt->valid_from.hour,
markrad	0:cdf462088d13	1399	crt->valid_from.min, crt->valid_from.sec );
markrad	0:cdf462088d13	1400	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1401
markrad	0:cdf462088d13	1402	ret = mbedtls_snprintf( p, n, "\n%sexpires on : " \
markrad	0:cdf462088d13	1403	"%04d-%02d-%02d %02d:%02d:%02d", prefix,
markrad	0:cdf462088d13	1404	crt->valid_to.year, crt->valid_to.mon,
markrad	0:cdf462088d13	1405	crt->valid_to.day, crt->valid_to.hour,
markrad	0:cdf462088d13	1406	crt->valid_to.min, crt->valid_to.sec );
markrad	0:cdf462088d13	1407	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1408
markrad	0:cdf462088d13	1409	ret = mbedtls_snprintf( p, n, "\n%ssigned using : ", prefix );
markrad	0:cdf462088d13	1410	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1411
markrad	0:cdf462088d13	1412	ret = mbedtls_x509_sig_alg_gets( p, n, &crt->sig_oid, crt->sig_pk,
markrad	0:cdf462088d13	1413	crt->sig_md, crt->sig_opts );
markrad	0:cdf462088d13	1414	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1415
markrad	0:cdf462088d13	1416	/* Key size */
markrad	0:cdf462088d13	1417	if( ( ret = mbedtls_x509_key_size_helper( key_size_str, BEFORE_COLON,
markrad	0:cdf462088d13	1418	mbedtls_pk_get_name( &crt->pk ) ) ) != 0 )
markrad	0:cdf462088d13	1419	{
markrad	0:cdf462088d13	1420	return( ret );
markrad	0:cdf462088d13	1421	}
markrad	0:cdf462088d13	1422
markrad	0:cdf462088d13	1423	ret = mbedtls_snprintf( p, n, "\n%s%-" BC "s: %d bits", prefix, key_size_str,
markrad	0:cdf462088d13	1424	(int) mbedtls_pk_get_bitlen( &crt->pk ) );
markrad	0:cdf462088d13	1425	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1426
markrad	0:cdf462088d13	1427	/*
markrad	0:cdf462088d13	1428	* Optional extensions
markrad	0:cdf462088d13	1429	*/
markrad	0:cdf462088d13	1430
markrad	0:cdf462088d13	1431	if( crt->ext_types & MBEDTLS_X509_EXT_BASIC_CONSTRAINTS )
markrad	0:cdf462088d13	1432	{
markrad	0:cdf462088d13	1433	ret = mbedtls_snprintf( p, n, "\n%sbasic constraints : CA=%s", prefix,
markrad	0:cdf462088d13	1434	crt->ca_istrue ? "true" : "false" );
markrad	0:cdf462088d13	1435	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1436
markrad	0:cdf462088d13	1437	if( crt->max_pathlen > 0 )
markrad	0:cdf462088d13	1438	{
markrad	0:cdf462088d13	1439	ret = mbedtls_snprintf( p, n, ", max_pathlen=%d", crt->max_pathlen - 1 );
markrad	0:cdf462088d13	1440	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1441	}
markrad	0:cdf462088d13	1442	}
markrad	0:cdf462088d13	1443
markrad	0:cdf462088d13	1444	if( crt->ext_types & MBEDTLS_X509_EXT_SUBJECT_ALT_NAME )
markrad	0:cdf462088d13	1445	{
markrad	0:cdf462088d13	1446	ret = mbedtls_snprintf( p, n, "\n%ssubject alt name : ", prefix );
markrad	0:cdf462088d13	1447	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1448
markrad	0:cdf462088d13	1449	if( ( ret = x509_info_subject_alt_name( &p, &n,
markrad	0:cdf462088d13	1450	&crt->subject_alt_names ) ) != 0 )
markrad	0:cdf462088d13	1451	return( ret );
markrad	0:cdf462088d13	1452	}
markrad	0:cdf462088d13	1453
markrad	0:cdf462088d13	1454	if( crt->ext_types & MBEDTLS_X509_EXT_NS_CERT_TYPE )
markrad	0:cdf462088d13	1455	{
markrad	0:cdf462088d13	1456	ret = mbedtls_snprintf( p, n, "\n%scert. type : ", prefix );
markrad	0:cdf462088d13	1457	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1458
markrad	0:cdf462088d13	1459	if( ( ret = x509_info_cert_type( &p, &n, crt->ns_cert_type ) ) != 0 )
markrad	0:cdf462088d13	1460	return( ret );
markrad	0:cdf462088d13	1461	}
markrad	0:cdf462088d13	1462
markrad	0:cdf462088d13	1463	if( crt->ext_types & MBEDTLS_X509_EXT_KEY_USAGE )
markrad	0:cdf462088d13	1464	{
markrad	0:cdf462088d13	1465	ret = mbedtls_snprintf( p, n, "\n%skey usage : ", prefix );
markrad	0:cdf462088d13	1466	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1467
markrad	0:cdf462088d13	1468	if( ( ret = x509_info_key_usage( &p, &n, crt->key_usage ) ) != 0 )
markrad	0:cdf462088d13	1469	return( ret );
markrad	0:cdf462088d13	1470	}
markrad	0:cdf462088d13	1471
markrad	0:cdf462088d13	1472	if( crt->ext_types & MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE )
markrad	0:cdf462088d13	1473	{
markrad	0:cdf462088d13	1474	ret = mbedtls_snprintf( p, n, "\n%sext key usage : ", prefix );
markrad	0:cdf462088d13	1475	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1476
markrad	0:cdf462088d13	1477	if( ( ret = x509_info_ext_key_usage( &p, &n,
markrad	0:cdf462088d13	1478	&crt->ext_key_usage ) ) != 0 )
markrad	0:cdf462088d13	1479	return( ret );
markrad	0:cdf462088d13	1480	}
markrad	0:cdf462088d13	1481
markrad	0:cdf462088d13	1482	ret = mbedtls_snprintf( p, n, "\n" );
markrad	0:cdf462088d13	1483	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1484
markrad	0:cdf462088d13	1485	return( (int) ( size - n ) );
markrad	0:cdf462088d13	1486	}
markrad	0:cdf462088d13	1487
markrad	0:cdf462088d13	1488	struct x509_crt_verify_string {
markrad	0:cdf462088d13	1489	int code;
markrad	0:cdf462088d13	1490	const char *string;
markrad	0:cdf462088d13	1491	};
markrad	0:cdf462088d13	1492
markrad	0:cdf462088d13	1493	static const struct x509_crt_verify_string x509_crt_verify_strings[] = {
markrad	0:cdf462088d13	1494	{ MBEDTLS_X509_BADCERT_EXPIRED, "The certificate validity has expired" },
markrad	0:cdf462088d13	1495	{ MBEDTLS_X509_BADCERT_REVOKED, "The certificate has been revoked (is on a CRL)" },
markrad	0:cdf462088d13	1496	{ MBEDTLS_X509_BADCERT_CN_MISMATCH, "The certificate Common Name (CN) does not match with the expected CN" },
markrad	0:cdf462088d13	1497	{ MBEDTLS_X509_BADCERT_NOT_TRUSTED, "The certificate is not correctly signed by the trusted CA" },
markrad	0:cdf462088d13	1498	{ MBEDTLS_X509_BADCRL_NOT_TRUSTED, "The CRL is not correctly signed by the trusted CA" },
markrad	0:cdf462088d13	1499	{ MBEDTLS_X509_BADCRL_EXPIRED, "The CRL is expired" },
markrad	0:cdf462088d13	1500	{ MBEDTLS_X509_BADCERT_MISSING, "Certificate was missing" },
markrad	0:cdf462088d13	1501	{ MBEDTLS_X509_BADCERT_SKIP_VERIFY, "Certificate verification was skipped" },
markrad	0:cdf462088d13	1502	{ MBEDTLS_X509_BADCERT_OTHER, "Other reason (can be used by verify callback)" },
markrad	0:cdf462088d13	1503	{ MBEDTLS_X509_BADCERT_FUTURE, "The certificate validity starts in the future" },
markrad	0:cdf462088d13	1504	{ MBEDTLS_X509_BADCRL_FUTURE, "The CRL is from the future" },
markrad	0:cdf462088d13	1505	{ MBEDTLS_X509_BADCERT_KEY_USAGE, "Usage does not match the keyUsage extension" },
markrad	0:cdf462088d13	1506	{ MBEDTLS_X509_BADCERT_EXT_KEY_USAGE, "Usage does not match the extendedKeyUsage extension" },
markrad	0:cdf462088d13	1507	{ MBEDTLS_X509_BADCERT_NS_CERT_TYPE, "Usage does not match the nsCertType extension" },
markrad	0:cdf462088d13	1508	{ MBEDTLS_X509_BADCERT_BAD_MD, "The certificate is signed with an unacceptable hash." },
markrad	0:cdf462088d13	1509	{ MBEDTLS_X509_BADCERT_BAD_PK, "The certificate is signed with an unacceptable PK alg (eg RSA vs ECDSA)." },
markrad	0:cdf462088d13	1510	{ MBEDTLS_X509_BADCERT_BAD_KEY, "The certificate is signed with an unacceptable key (eg bad curve, RSA too short)." },
markrad	0:cdf462088d13	1511	{ MBEDTLS_X509_BADCRL_BAD_MD, "The CRL is signed with an unacceptable hash." },
markrad	0:cdf462088d13	1512	{ MBEDTLS_X509_BADCRL_BAD_PK, "The CRL is signed with an unacceptable PK alg (eg RSA vs ECDSA)." },
markrad	0:cdf462088d13	1513	{ MBEDTLS_X509_BADCRL_BAD_KEY, "The CRL is signed with an unacceptable key (eg bad curve, RSA too short)." },
markrad	0:cdf462088d13	1514	{ 0, NULL }
markrad	0:cdf462088d13	1515	};
markrad	0:cdf462088d13	1516
markrad	0:cdf462088d13	1517	int mbedtls_x509_crt_verify_info( char buf, size_t size, const char prefix,
markrad	0:cdf462088d13	1518	uint32_t flags )
markrad	0:cdf462088d13	1519	{
markrad	0:cdf462088d13	1520	int ret;
markrad	0:cdf462088d13	1521	const struct x509_crt_verify_string *cur;
markrad	0:cdf462088d13	1522	char *p = buf;
markrad	0:cdf462088d13	1523	size_t n = size;
markrad	0:cdf462088d13	1524
markrad	0:cdf462088d13	1525	for( cur = x509_crt_verify_strings; cur->string != NULL ; cur++ )
markrad	0:cdf462088d13	1526	{
markrad	0:cdf462088d13	1527	if( ( flags & cur->code ) == 0 )
markrad	0:cdf462088d13	1528	continue;
markrad	0:cdf462088d13	1529
markrad	0:cdf462088d13	1530	ret = mbedtls_snprintf( p, n, "%s%s\n", prefix, cur->string );
markrad	0:cdf462088d13	1531	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1532	flags ^= cur->code;
markrad	0:cdf462088d13	1533	}
markrad	0:cdf462088d13	1534
markrad	0:cdf462088d13	1535	if( flags != 0 )
markrad	0:cdf462088d13	1536	{
markrad	0:cdf462088d13	1537	ret = mbedtls_snprintf( p, n, "%sUnknown reason "
markrad	0:cdf462088d13	1538	"(this should not happen)\n", prefix );
markrad	0:cdf462088d13	1539	MBEDTLS_X509_SAFE_SNPRINTF;
markrad	0:cdf462088d13	1540	}
markrad	0:cdf462088d13	1541
markrad	0:cdf462088d13	1542	return( (int) ( size - n ) );
markrad	0:cdf462088d13	1543	}
markrad	0:cdf462088d13	1544
markrad	0:cdf462088d13	1545	#if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
markrad	0:cdf462088d13	1546	int mbedtls_x509_crt_check_key_usage( const mbedtls_x509_crt *crt,
markrad	0:cdf462088d13	1547	unsigned int usage )
markrad	0:cdf462088d13	1548	{
markrad	0:cdf462088d13	1549	unsigned int usage_must, usage_may;
markrad	0:cdf462088d13	1550	unsigned int may_mask = MBEDTLS_X509_KU_ENCIPHER_ONLY
markrad	0:cdf462088d13	1551	\| MBEDTLS_X509_KU_DECIPHER_ONLY;
markrad	0:cdf462088d13	1552
markrad	0:cdf462088d13	1553	if( ( crt->ext_types & MBEDTLS_X509_EXT_KEY_USAGE ) == 0 )
markrad	0:cdf462088d13	1554	return( 0 );
markrad	0:cdf462088d13	1555
markrad	0:cdf462088d13	1556	usage_must = usage & ~may_mask;
markrad	0:cdf462088d13	1557
markrad	0:cdf462088d13	1558	if( ( ( crt->key_usage & ~may_mask ) & usage_must ) != usage_must )
markrad	0:cdf462088d13	1559	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
markrad	0:cdf462088d13	1560
markrad	0:cdf462088d13	1561	usage_may = usage & may_mask;
markrad	0:cdf462088d13	1562
markrad	0:cdf462088d13	1563	if( ( ( crt->key_usage & may_mask ) \| usage_may ) != usage_may )
markrad	0:cdf462088d13	1564	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
markrad	0:cdf462088d13	1565
markrad	0:cdf462088d13	1566	return( 0 );
markrad	0:cdf462088d13	1567	}
markrad	0:cdf462088d13	1568	#endif
markrad	0:cdf462088d13	1569
markrad	0:cdf462088d13	1570	#if defined(MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE)
markrad	0:cdf462088d13	1571	int mbedtls_x509_crt_check_extended_key_usage( const mbedtls_x509_crt *crt,
markrad	0:cdf462088d13	1572	const char *usage_oid,
markrad	0:cdf462088d13	1573	size_t usage_len )
markrad	0:cdf462088d13	1574	{
markrad	0:cdf462088d13	1575	const mbedtls_x509_sequence *cur;
markrad	0:cdf462088d13	1576
markrad	0:cdf462088d13	1577	/* Extension is not mandatory, absent means no restriction */
markrad	0:cdf462088d13	1578	if( ( crt->ext_types & MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE ) == 0 )
markrad	0:cdf462088d13	1579	return( 0 );
markrad	0:cdf462088d13	1580
markrad	0:cdf462088d13	1581	/*
markrad	0:cdf462088d13	1582	* Look for the requested usage (or wildcard ANY) in our list
markrad	0:cdf462088d13	1583	*/
markrad	0:cdf462088d13	1584	for( cur = &crt->ext_key_usage; cur != NULL; cur = cur->next )
markrad	0:cdf462088d13	1585	{
markrad	0:cdf462088d13	1586	const mbedtls_x509_buf *cur_oid = &cur->buf;
markrad	0:cdf462088d13	1587
markrad	0:cdf462088d13	1588	if( cur_oid->len == usage_len &&
markrad	0:cdf462088d13	1589	memcmp( cur_oid->p, usage_oid, usage_len ) == 0 )
markrad	0:cdf462088d13	1590	{
markrad	0:cdf462088d13	1591	return( 0 );
markrad	0:cdf462088d13	1592	}
markrad	0:cdf462088d13	1593
markrad	0:cdf462088d13	1594	if( MBEDTLS_OID_CMP( MBEDTLS_OID_ANY_EXTENDED_KEY_USAGE, cur_oid ) == 0 )
markrad	0:cdf462088d13	1595	return( 0 );
markrad	0:cdf462088d13	1596	}
markrad	0:cdf462088d13	1597
markrad	0:cdf462088d13	1598	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
markrad	0:cdf462088d13	1599	}
markrad	0:cdf462088d13	1600	#endif /* MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE */
markrad	0:cdf462088d13	1601
markrad	0:cdf462088d13	1602	#if defined(MBEDTLS_X509_CRL_PARSE_C)
markrad	0:cdf462088d13	1603	/*
markrad	0:cdf462088d13	1604	* Return 1 if the certificate is revoked, or 0 otherwise.
markrad	0:cdf462088d13	1605	*/
markrad	0:cdf462088d13	1606	int mbedtls_x509_crt_is_revoked( const mbedtls_x509_crt crt, const mbedtls_x509_crl crl )
markrad	0:cdf462088d13	1607	{
markrad	0:cdf462088d13	1608	const mbedtls_x509_crl_entry *cur = &crl->entry;
markrad	0:cdf462088d13	1609
markrad	0:cdf462088d13	1610	while( cur != NULL && cur->serial.len != 0 )
markrad	0:cdf462088d13	1611	{
markrad	0:cdf462088d13	1612	if( crt->serial.len == cur->serial.len &&
markrad	0:cdf462088d13	1613	memcmp( crt->serial.p, cur->serial.p, crt->serial.len ) == 0 )
markrad	0:cdf462088d13	1614	{
markrad	0:cdf462088d13	1615	if( mbedtls_x509_time_is_past( &cur->revocation_date ) )
markrad	0:cdf462088d13	1616	return( 1 );
markrad	0:cdf462088d13	1617	}
markrad	0:cdf462088d13	1618
markrad	0:cdf462088d13	1619	cur = cur->next;
markrad	0:cdf462088d13	1620	}
markrad	0:cdf462088d13	1621
markrad	0:cdf462088d13	1622	return( 0 );
markrad	0:cdf462088d13	1623	}
markrad	0:cdf462088d13	1624
markrad	0:cdf462088d13	1625	/*
markrad	0:cdf462088d13	1626	* Check that the given certificate is not revoked according to the CRL.
markrad	0:cdf462088d13	1627	* Skip validation is no CRL for the given CA is present.
markrad	0:cdf462088d13	1628	*/
markrad	0:cdf462088d13	1629	static int x509_crt_verifycrl( mbedtls_x509_crt crt, mbedtls_x509_crt ca,
markrad	0:cdf462088d13	1630	mbedtls_x509_crl *crl_list,
markrad	0:cdf462088d13	1631	const mbedtls_x509_crt_profile *profile )
markrad	0:cdf462088d13	1632	{
markrad	0:cdf462088d13	1633	int flags = 0;
markrad	0:cdf462088d13	1634	unsigned char hash[MBEDTLS_MD_MAX_SIZE];
markrad	0:cdf462088d13	1635	const mbedtls_md_info_t *md_info;
markrad	0:cdf462088d13	1636
markrad	0:cdf462088d13	1637	if( ca == NULL )
markrad	0:cdf462088d13	1638	return( flags );
markrad	0:cdf462088d13	1639
markrad	0:cdf462088d13	1640	while( crl_list != NULL )
markrad	0:cdf462088d13	1641	{
markrad	0:cdf462088d13	1642	if( crl_list->version == 0 \|\|
markrad	0:cdf462088d13	1643	crl_list->issuer_raw.len != ca->subject_raw.len \|\|
markrad	0:cdf462088d13	1644	memcmp( crl_list->issuer_raw.p, ca->subject_raw.p,
markrad	0:cdf462088d13	1645	crl_list->issuer_raw.len ) != 0 )
markrad	0:cdf462088d13	1646	{
markrad	0:cdf462088d13	1647	crl_list = crl_list->next;
markrad	0:cdf462088d13	1648	continue;
markrad	0:cdf462088d13	1649	}
markrad	0:cdf462088d13	1650
markrad	0:cdf462088d13	1651	/*
markrad	0:cdf462088d13	1652	* Check if the CA is configured to sign CRLs
markrad	0:cdf462088d13	1653	*/
markrad	0:cdf462088d13	1654	#if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
markrad	0:cdf462088d13	1655	if( mbedtls_x509_crt_check_key_usage( ca, MBEDTLS_X509_KU_CRL_SIGN ) != 0 )
markrad	0:cdf462088d13	1656	{
markrad	0:cdf462088d13	1657	flags \|= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
markrad	0:cdf462088d13	1658	break;
markrad	0:cdf462088d13	1659	}
markrad	0:cdf462088d13	1660	#endif
markrad	0:cdf462088d13	1661
markrad	0:cdf462088d13	1662	/*
markrad	0:cdf462088d13	1663	* Check if CRL is correctly signed by the trusted CA
markrad	0:cdf462088d13	1664	*/
markrad	0:cdf462088d13	1665	if( x509_profile_check_md_alg( profile, crl_list->sig_md ) != 0 )
markrad	0:cdf462088d13	1666	flags \|= MBEDTLS_X509_BADCRL_BAD_MD;
markrad	0:cdf462088d13	1667
markrad	0:cdf462088d13	1668	if( x509_profile_check_pk_alg( profile, crl_list->sig_pk ) != 0 )
markrad	0:cdf462088d13	1669	flags \|= MBEDTLS_X509_BADCRL_BAD_PK;
markrad	0:cdf462088d13	1670
markrad	0:cdf462088d13	1671	md_info = mbedtls_md_info_from_type( crl_list->sig_md );
markrad	0:cdf462088d13	1672	if( md_info == NULL )
markrad	0:cdf462088d13	1673	{
markrad	0:cdf462088d13	1674	/*
markrad	0:cdf462088d13	1675	* Cannot check 'unknown' hash
markrad	0:cdf462088d13	1676	*/
markrad	0:cdf462088d13	1677	flags \|= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
markrad	0:cdf462088d13	1678	break;
markrad	0:cdf462088d13	1679	}
markrad	0:cdf462088d13	1680
markrad	0:cdf462088d13	1681	mbedtls_md( md_info, crl_list->tbs.p, crl_list->tbs.len, hash );
markrad	0:cdf462088d13	1682
markrad	0:cdf462088d13	1683	if( x509_profile_check_key( profile, crl_list->sig_pk, &ca->pk ) != 0 )
markrad	0:cdf462088d13	1684	flags \|= MBEDTLS_X509_BADCERT_BAD_KEY;
markrad	0:cdf462088d13	1685
markrad	0:cdf462088d13	1686	if( mbedtls_pk_verify_ext( crl_list->sig_pk, crl_list->sig_opts, &ca->pk,
markrad	0:cdf462088d13	1687	crl_list->sig_md, hash, mbedtls_md_get_size( md_info ),
markrad	0:cdf462088d13	1688	crl_list->sig.p, crl_list->sig.len ) != 0 )
markrad	0:cdf462088d13	1689	{
markrad	0:cdf462088d13	1690	flags \|= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
markrad	0:cdf462088d13	1691	break;
markrad	0:cdf462088d13	1692	}
markrad	0:cdf462088d13	1693
markrad	0:cdf462088d13	1694	/*
markrad	0:cdf462088d13	1695	* Check for validity of CRL (Do not drop out)
markrad	0:cdf462088d13	1696	*/
markrad	0:cdf462088d13	1697	if( mbedtls_x509_time_is_past( &crl_list->next_update ) )
markrad	0:cdf462088d13	1698	flags \|= MBEDTLS_X509_BADCRL_EXPIRED;
markrad	0:cdf462088d13	1699
markrad	0:cdf462088d13	1700	if( mbedtls_x509_time_is_future( &crl_list->this_update ) )
markrad	0:cdf462088d13	1701	flags \|= MBEDTLS_X509_BADCRL_FUTURE;
markrad	0:cdf462088d13	1702
markrad	0:cdf462088d13	1703	/*
markrad	0:cdf462088d13	1704	* Check if certificate is revoked
markrad	0:cdf462088d13	1705	*/
markrad	0:cdf462088d13	1706	if( mbedtls_x509_crt_is_revoked( crt, crl_list ) )
markrad	0:cdf462088d13	1707	{
markrad	0:cdf462088d13	1708	flags \|= MBEDTLS_X509_BADCERT_REVOKED;
markrad	0:cdf462088d13	1709	break;
markrad	0:cdf462088d13	1710	}
markrad	0:cdf462088d13	1711
markrad	0:cdf462088d13	1712	crl_list = crl_list->next;
markrad	0:cdf462088d13	1713	}
markrad	0:cdf462088d13	1714
markrad	0:cdf462088d13	1715	return( flags );
markrad	0:cdf462088d13	1716	}
markrad	0:cdf462088d13	1717	#endif /* MBEDTLS_X509_CRL_PARSE_C */
markrad	0:cdf462088d13	1718
markrad	0:cdf462088d13	1719	/*
markrad	0:cdf462088d13	1720	* Like memcmp, but case-insensitive and always returns -1 if different
markrad	0:cdf462088d13	1721	*/
markrad	0:cdf462088d13	1722	static int x509_memcasecmp( const void s1, const void s2, size_t len )
markrad	0:cdf462088d13	1723	{
markrad	0:cdf462088d13	1724	size_t i;
markrad	0:cdf462088d13	1725	unsigned char diff;
markrad	0:cdf462088d13	1726	const unsigned char n1 = s1, n2 = s2;
markrad	0:cdf462088d13	1727
markrad	0:cdf462088d13	1728	for( i = 0; i < len; i++ )
markrad	0:cdf462088d13	1729	{
markrad	0:cdf462088d13	1730	diff = n1[i] ^ n2[i];
markrad	0:cdf462088d13	1731
markrad	0:cdf462088d13	1732	if( diff == 0 )
markrad	0:cdf462088d13	1733	continue;
markrad	0:cdf462088d13	1734
markrad	0:cdf462088d13	1735	if( diff == 32 &&
markrad	0:cdf462088d13	1736	( ( n1[i] >= 'a' && n1[i] <= 'z' ) \|\|
markrad	0:cdf462088d13	1737	( n1[i] >= 'A' && n1[i] <= 'Z' ) ) )
markrad	0:cdf462088d13	1738	{
markrad	0:cdf462088d13	1739	continue;
markrad	0:cdf462088d13	1740	}
markrad	0:cdf462088d13	1741
markrad	0:cdf462088d13	1742	return( -1 );
markrad	0:cdf462088d13	1743	}
markrad	0:cdf462088d13	1744
markrad	0:cdf462088d13	1745	return( 0 );
markrad	0:cdf462088d13	1746	}
markrad	0:cdf462088d13	1747
markrad	0:cdf462088d13	1748	/*
markrad	0:cdf462088d13	1749	* Return 0 if name matches wildcard, -1 otherwise
markrad	0:cdf462088d13	1750	*/
markrad	0:cdf462088d13	1751	static int x509_check_wildcard( const char cn, mbedtls_x509_buf name )
markrad	0:cdf462088d13	1752	{
markrad	0:cdf462088d13	1753	size_t i;
markrad	0:cdf462088d13	1754	size_t cn_idx = 0, cn_len = strlen( cn );
markrad	0:cdf462088d13	1755
markrad	0:cdf462088d13	1756	if( name->len < 3 \|\| name->p[0] != '*' \|\| name->p[1] != '.' )
markrad	0:cdf462088d13	1757	return( 0 );
markrad	0:cdf462088d13	1758
markrad	0:cdf462088d13	1759	for( i = 0; i < cn_len; ++i )
markrad	0:cdf462088d13	1760	{
markrad	0:cdf462088d13	1761	if( cn[i] == '.' )
markrad	0:cdf462088d13	1762	{
markrad	0:cdf462088d13	1763	cn_idx = i;
markrad	0:cdf462088d13	1764	break;
markrad	0:cdf462088d13	1765	}
markrad	0:cdf462088d13	1766	}
markrad	0:cdf462088d13	1767
markrad	0:cdf462088d13	1768	if( cn_idx == 0 )
markrad	0:cdf462088d13	1769	return( -1 );
markrad	0:cdf462088d13	1770
markrad	0:cdf462088d13	1771	if( cn_len - cn_idx == name->len - 1 &&
markrad	0:cdf462088d13	1772	x509_memcasecmp( name->p + 1, cn + cn_idx, name->len - 1 ) == 0 )
markrad	0:cdf462088d13	1773	{
markrad	0:cdf462088d13	1774	return( 0 );
markrad	0:cdf462088d13	1775	}
markrad	0:cdf462088d13	1776
markrad	0:cdf462088d13	1777	return( -1 );
markrad	0:cdf462088d13	1778	}
markrad	0:cdf462088d13	1779
markrad	0:cdf462088d13	1780	/*
markrad	0:cdf462088d13	1781	* Compare two X.509 strings, case-insensitive, and allowing for some encoding
markrad	0:cdf462088d13	1782	* variations (but not all).
markrad	0:cdf462088d13	1783	*
markrad	0:cdf462088d13	1784	* Return 0 if equal, -1 otherwise.
markrad	0:cdf462088d13	1785	*/
markrad	0:cdf462088d13	1786	static int x509_string_cmp( const mbedtls_x509_buf a, const mbedtls_x509_buf b )
markrad	0:cdf462088d13	1787	{
markrad	0:cdf462088d13	1788	if( a->tag == b->tag &&
markrad	0:cdf462088d13	1789	a->len == b->len &&
markrad	0:cdf462088d13	1790	memcmp( a->p, b->p, b->len ) == 0 )
markrad	0:cdf462088d13	1791	{
markrad	0:cdf462088d13	1792	return( 0 );
markrad	0:cdf462088d13	1793	}
markrad	0:cdf462088d13	1794
markrad	0:cdf462088d13	1795	if( ( a->tag == MBEDTLS_ASN1_UTF8_STRING \|\| a->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) &&
markrad	0:cdf462088d13	1796	( b->tag == MBEDTLS_ASN1_UTF8_STRING \|\| b->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) &&
markrad	0:cdf462088d13	1797	a->len == b->len &&
markrad	0:cdf462088d13	1798	x509_memcasecmp( a->p, b->p, b->len ) == 0 )
markrad	0:cdf462088d13	1799	{
markrad	0:cdf462088d13	1800	return( 0 );
markrad	0:cdf462088d13	1801	}
markrad	0:cdf462088d13	1802
markrad	0:cdf462088d13	1803	return( -1 );
markrad	0:cdf462088d13	1804	}
markrad	0:cdf462088d13	1805
markrad	0:cdf462088d13	1806	/*
markrad	0:cdf462088d13	1807	* Compare two X.509 Names (aka rdnSequence).
markrad	0:cdf462088d13	1808	*
markrad	0:cdf462088d13	1809	* See RFC 5280 section 7.1, though we don't implement the whole algorithm:
markrad	0:cdf462088d13	1810	* we sometimes return unequal when the full algorithm would return equal,
markrad	0:cdf462088d13	1811	* but never the other way. (In particular, we don't do Unicode normalisation
markrad	0:cdf462088d13	1812	* or space folding.)
markrad	0:cdf462088d13	1813	*
markrad	0:cdf462088d13	1814	* Return 0 if equal, -1 otherwise.
markrad	0:cdf462088d13	1815	*/
markrad	0:cdf462088d13	1816	static int x509_name_cmp( const mbedtls_x509_name a, const mbedtls_x509_name b )
markrad	0:cdf462088d13	1817	{
markrad	0:cdf462088d13	1818	/* Avoid recursion, it might not be optimised by the compiler */
markrad	0:cdf462088d13	1819	while( a != NULL \|\| b != NULL )
markrad	0:cdf462088d13	1820	{
markrad	0:cdf462088d13	1821	if( a == NULL \|\| b == NULL )
markrad	0:cdf462088d13	1822	return( -1 );
markrad	0:cdf462088d13	1823
markrad	0:cdf462088d13	1824	/* type */
markrad	0:cdf462088d13	1825	if( a->oid.tag != b->oid.tag \|\|
markrad	0:cdf462088d13	1826	a->oid.len != b->oid.len \|\|
markrad	0:cdf462088d13	1827	memcmp( a->oid.p, b->oid.p, b->oid.len ) != 0 )
markrad	0:cdf462088d13	1828	{
markrad	0:cdf462088d13	1829	return( -1 );
markrad	0:cdf462088d13	1830	}
markrad	0:cdf462088d13	1831
markrad	0:cdf462088d13	1832	/* value */
markrad	0:cdf462088d13	1833	if( x509_string_cmp( &a->val, &b->val ) != 0 )
markrad	0:cdf462088d13	1834	return( -1 );
markrad	0:cdf462088d13	1835
markrad	0:cdf462088d13	1836	/* structure of the list of sets */
markrad	0:cdf462088d13	1837	if( a->next_merged != b->next_merged )
markrad	0:cdf462088d13	1838	return( -1 );
markrad	0:cdf462088d13	1839
markrad	0:cdf462088d13	1840	a = a->next;
markrad	0:cdf462088d13	1841	b = b->next;
markrad	0:cdf462088d13	1842	}
markrad	0:cdf462088d13	1843
markrad	0:cdf462088d13	1844	/* a == NULL == b */
markrad	0:cdf462088d13	1845	return( 0 );
markrad	0:cdf462088d13	1846	}
markrad	0:cdf462088d13	1847
markrad	0:cdf462088d13	1848	/*
markrad	0:cdf462088d13	1849	* Check if 'parent' is a suitable parent (signing CA) for 'child'.
markrad	0:cdf462088d13	1850	* Return 0 if yes, -1 if not.
markrad	0:cdf462088d13	1851	*
markrad	0:cdf462088d13	1852	* top means parent is a locally-trusted certificate
markrad	0:cdf462088d13	1853	* bottom means child is the end entity cert
markrad	0:cdf462088d13	1854	*/
markrad	0:cdf462088d13	1855	static int x509_crt_check_parent( const mbedtls_x509_crt *child,
markrad	0:cdf462088d13	1856	const mbedtls_x509_crt *parent,
markrad	0:cdf462088d13	1857	int top, int bottom )
markrad	0:cdf462088d13	1858	{
markrad	0:cdf462088d13	1859	int need_ca_bit;
markrad	0:cdf462088d13	1860
markrad	0:cdf462088d13	1861	/* Parent must be the issuer */
markrad	0:cdf462088d13	1862	if( x509_name_cmp( &child->issuer, &parent->subject ) != 0 )
markrad	0:cdf462088d13	1863	return( -1 );
markrad	0:cdf462088d13	1864
markrad	0:cdf462088d13	1865	/* Parent must have the basicConstraints CA bit set as a general rule */
markrad	0:cdf462088d13	1866	need_ca_bit = 1;
markrad	0:cdf462088d13	1867
markrad	0:cdf462088d13	1868	/* Exception: v1/v2 certificates that are locally trusted. */
markrad	0:cdf462088d13	1869	if( top && parent->version < 3 )
markrad	0:cdf462088d13	1870	need_ca_bit = 0;
markrad	0:cdf462088d13	1871
markrad	0:cdf462088d13	1872	/* Exception: self-signed end-entity certs that are locally trusted. */
markrad	0:cdf462088d13	1873	if( top && bottom &&
markrad	0:cdf462088d13	1874	child->raw.len == parent->raw.len &&
markrad	0:cdf462088d13	1875	memcmp( child->raw.p, parent->raw.p, child->raw.len ) == 0 )
markrad	0:cdf462088d13	1876	{
markrad	0:cdf462088d13	1877	need_ca_bit = 0;
markrad	0:cdf462088d13	1878	}
markrad	0:cdf462088d13	1879
markrad	0:cdf462088d13	1880	if( need_ca_bit && ! parent->ca_istrue )
markrad	0:cdf462088d13	1881	return( -1 );
markrad	0:cdf462088d13	1882
markrad	0:cdf462088d13	1883	#if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
markrad	0:cdf462088d13	1884	if( need_ca_bit &&
markrad	0:cdf462088d13	1885	mbedtls_x509_crt_check_key_usage( parent, MBEDTLS_X509_KU_KEY_CERT_SIGN ) != 0 )
markrad	0:cdf462088d13	1886	{
markrad	0:cdf462088d13	1887	return( -1 );
markrad	0:cdf462088d13	1888	}
markrad	0:cdf462088d13	1889	#endif
markrad	0:cdf462088d13	1890
markrad	0:cdf462088d13	1891	return( 0 );
markrad	0:cdf462088d13	1892	}
markrad	0:cdf462088d13	1893
markrad	0:cdf462088d13	1894	static int x509_crt_verify_top(
markrad	0:cdf462088d13	1895	mbedtls_x509_crt child, mbedtls_x509_crt trust_ca,
markrad	0:cdf462088d13	1896	mbedtls_x509_crl *ca_crl,
markrad	0:cdf462088d13	1897	const mbedtls_x509_crt_profile *profile,
markrad	0:cdf462088d13	1898	int path_cnt, int self_cnt, uint32_t *flags,
markrad	0:cdf462088d13	1899	int (f_vrfy)(void , mbedtls_x509_crt , int, uint32_t ),
markrad	0:cdf462088d13	1900	void *p_vrfy )
markrad	0:cdf462088d13	1901	{
markrad	0:cdf462088d13	1902	int ret;
markrad	0:cdf462088d13	1903	uint32_t ca_flags = 0;
markrad	0:cdf462088d13	1904	int check_path_cnt;
markrad	0:cdf462088d13	1905	unsigned char hash[MBEDTLS_MD_MAX_SIZE];
markrad	0:cdf462088d13	1906	const mbedtls_md_info_t *md_info;
markrad	0:cdf462088d13	1907
markrad	0:cdf462088d13	1908	if( mbedtls_x509_time_is_past( &child->valid_to ) )
markrad	0:cdf462088d13	1909	*flags \|= MBEDTLS_X509_BADCERT_EXPIRED;
markrad	0:cdf462088d13	1910
markrad	0:cdf462088d13	1911	if( mbedtls_x509_time_is_future( &child->valid_from ) )
markrad	0:cdf462088d13	1912	*flags \|= MBEDTLS_X509_BADCERT_FUTURE;
markrad	0:cdf462088d13	1913
markrad	0:cdf462088d13	1914	if( x509_profile_check_md_alg( profile, child->sig_md ) != 0 )
markrad	0:cdf462088d13	1915	*flags \|= MBEDTLS_X509_BADCERT_BAD_MD;
markrad	0:cdf462088d13	1916
markrad	0:cdf462088d13	1917	if( x509_profile_check_pk_alg( profile, child->sig_pk ) != 0 )
markrad	0:cdf462088d13	1918	*flags \|= MBEDTLS_X509_BADCERT_BAD_PK;
markrad	0:cdf462088d13	1919
markrad	0:cdf462088d13	1920	/*
markrad	0:cdf462088d13	1921	* Child is the top of the chain. Check against the trust_ca list.
markrad	0:cdf462088d13	1922	*/
markrad	0:cdf462088d13	1923	*flags \|= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
markrad	0:cdf462088d13	1924
markrad	0:cdf462088d13	1925	md_info = mbedtls_md_info_from_type( child->sig_md );
markrad	0:cdf462088d13	1926	if( md_info == NULL )
markrad	0:cdf462088d13	1927	{
markrad	0:cdf462088d13	1928	/*
markrad	0:cdf462088d13	1929	* Cannot check 'unknown', no need to try any CA
markrad	0:cdf462088d13	1930	*/
markrad	0:cdf462088d13	1931	trust_ca = NULL;
markrad	0:cdf462088d13	1932	}
markrad	0:cdf462088d13	1933	else
markrad	0:cdf462088d13	1934	mbedtls_md( md_info, child->tbs.p, child->tbs.len, hash );
markrad	0:cdf462088d13	1935
markrad	0:cdf462088d13	1936	for( /* trust_ca */ ; trust_ca != NULL; trust_ca = trust_ca->next )
markrad	0:cdf462088d13	1937	{
markrad	0:cdf462088d13	1938	if( x509_crt_check_parent( child, trust_ca, 1, path_cnt == 0 ) != 0 )
markrad	0:cdf462088d13	1939	continue;
markrad	0:cdf462088d13	1940
markrad	0:cdf462088d13	1941	check_path_cnt = path_cnt + 1;
markrad	0:cdf462088d13	1942
markrad	0:cdf462088d13	1943	/*
markrad	0:cdf462088d13	1944	* Reduce check_path_cnt to check against if top of the chain is
markrad	0:cdf462088d13	1945	* the same as the trusted CA
markrad	0:cdf462088d13	1946	*/
markrad	0:cdf462088d13	1947	if( child->subject_raw.len == trust_ca->subject_raw.len &&
markrad	0:cdf462088d13	1948	memcmp( child->subject_raw.p, trust_ca->subject_raw.p,
markrad	0:cdf462088d13	1949	child->issuer_raw.len ) == 0 )
markrad	0:cdf462088d13	1950	{
markrad	0:cdf462088d13	1951	check_path_cnt--;
markrad	0:cdf462088d13	1952	}
markrad	0:cdf462088d13	1953
markrad	0:cdf462088d13	1954	/* Self signed certificates do not count towards the limit */
markrad	0:cdf462088d13	1955	if( trust_ca->max_pathlen > 0 &&
markrad	0:cdf462088d13	1956	trust_ca->max_pathlen < check_path_cnt - self_cnt )
markrad	0:cdf462088d13	1957	{
markrad	0:cdf462088d13	1958	continue;
markrad	0:cdf462088d13	1959	}
markrad	0:cdf462088d13	1960
markrad	0:cdf462088d13	1961	if( mbedtls_x509_time_is_past( &trust_ca->valid_to ) )
markrad	0:cdf462088d13	1962	{
markrad	0:cdf462088d13	1963	continue;
markrad	0:cdf462088d13	1964	}
markrad	0:cdf462088d13	1965
markrad	0:cdf462088d13	1966	if( mbedtls_x509_time_is_future( &trust_ca->valid_from ) )
markrad	0:cdf462088d13	1967	{
markrad	0:cdf462088d13	1968	continue;
markrad	0:cdf462088d13	1969	}
markrad	0:cdf462088d13	1970
markrad	0:cdf462088d13	1971	if( mbedtls_pk_verify_ext( child->sig_pk, child->sig_opts, &trust_ca->pk,
markrad	0:cdf462088d13	1972	child->sig_md, hash, mbedtls_md_get_size( md_info ),
markrad	0:cdf462088d13	1973	child->sig.p, child->sig.len ) != 0 )
markrad	0:cdf462088d13	1974	{
markrad	0:cdf462088d13	1975	continue;
markrad	0:cdf462088d13	1976	}
markrad	0:cdf462088d13	1977
markrad	0:cdf462088d13	1978	/*
markrad	0:cdf462088d13	1979	* Top of chain is signed by a trusted CA
markrad	0:cdf462088d13	1980	*/
markrad	0:cdf462088d13	1981	*flags &= ~MBEDTLS_X509_BADCERT_NOT_TRUSTED;
markrad	0:cdf462088d13	1982
markrad	0:cdf462088d13	1983	if( x509_profile_check_key( profile, child->sig_pk, &trust_ca->pk ) != 0 )
markrad	0:cdf462088d13	1984	*flags \|= MBEDTLS_X509_BADCERT_BAD_KEY;
markrad	0:cdf462088d13	1985
markrad	0:cdf462088d13	1986	break;
markrad	0:cdf462088d13	1987	}
markrad	0:cdf462088d13	1988
markrad	0:cdf462088d13	1989	/*
markrad	0:cdf462088d13	1990	* If top of chain is not the same as the trusted CA send a verify request
markrad	0:cdf462088d13	1991	* to the callback for any issues with validity and CRL presence for the
markrad	0:cdf462088d13	1992	* trusted CA certificate.
markrad	0:cdf462088d13	1993	*/
markrad	0:cdf462088d13	1994	if( trust_ca != NULL &&
markrad	0:cdf462088d13	1995	( child->subject_raw.len != trust_ca->subject_raw.len \|\|
markrad	0:cdf462088d13	1996	memcmp( child->subject_raw.p, trust_ca->subject_raw.p,
markrad	0:cdf462088d13	1997	child->issuer_raw.len ) != 0 ) )
markrad	0:cdf462088d13	1998	{
markrad	0:cdf462088d13	1999	#if defined(MBEDTLS_X509_CRL_PARSE_C)
markrad	0:cdf462088d13	2000	/* Check trusted CA's CRL for the chain's top crt */
markrad	0:cdf462088d13	2001	*flags \|= x509_crt_verifycrl( child, trust_ca, ca_crl, profile );
markrad	0:cdf462088d13	2002	#else
markrad	0:cdf462088d13	2003	((void) ca_crl);
markrad	0:cdf462088d13	2004	#endif
markrad	0:cdf462088d13	2005
markrad	0:cdf462088d13	2006	if( NULL != f_vrfy )
markrad	0:cdf462088d13	2007	{
markrad	0:cdf462088d13	2008	if( ( ret = f_vrfy( p_vrfy, trust_ca, path_cnt + 1,
markrad	0:cdf462088d13	2009	&ca_flags ) ) != 0 )
markrad	0:cdf462088d13	2010	{
markrad	0:cdf462088d13	2011	return( ret );
markrad	0:cdf462088d13	2012	}
markrad	0:cdf462088d13	2013	}
markrad	0:cdf462088d13	2014	}
markrad	0:cdf462088d13	2015
markrad	0:cdf462088d13	2016	/* Call callback on top cert */
markrad	0:cdf462088d13	2017	if( NULL != f_vrfy )
markrad	0:cdf462088d13	2018	{
markrad	0:cdf462088d13	2019	if( ( ret = f_vrfy( p_vrfy, child, path_cnt, flags ) ) != 0 )
markrad	0:cdf462088d13	2020	return( ret );
markrad	0:cdf462088d13	2021	}
markrad	0:cdf462088d13	2022
markrad	0:cdf462088d13	2023	*flags \|= ca_flags;
markrad	0:cdf462088d13	2024
markrad	0:cdf462088d13	2025	return( 0 );
markrad	0:cdf462088d13	2026	}
markrad	0:cdf462088d13	2027
markrad	0:cdf462088d13	2028	static int x509_crt_verify_child(
markrad	0:cdf462088d13	2029	mbedtls_x509_crt child, mbedtls_x509_crt parent,
markrad	0:cdf462088d13	2030	mbedtls_x509_crt trust_ca, mbedtls_x509_crl ca_crl,
markrad	0:cdf462088d13	2031	const mbedtls_x509_crt_profile *profile,
markrad	0:cdf462088d13	2032	int path_cnt, int self_cnt, uint32_t *flags,
markrad	0:cdf462088d13	2033	int (f_vrfy)(void , mbedtls_x509_crt , int, uint32_t ),
markrad	0:cdf462088d13	2034	void *p_vrfy )
markrad	0:cdf462088d13	2035	{
markrad	0:cdf462088d13	2036	int ret;
markrad	0:cdf462088d13	2037	uint32_t parent_flags = 0;
markrad	0:cdf462088d13	2038	unsigned char hash[MBEDTLS_MD_MAX_SIZE];
markrad	0:cdf462088d13	2039	mbedtls_x509_crt *grandparent;
markrad	0:cdf462088d13	2040	const mbedtls_md_info_t *md_info;
markrad	0:cdf462088d13	2041
markrad	0:cdf462088d13	2042	/* Counting intermediate self signed certificates */
markrad	0:cdf462088d13	2043	if( ( path_cnt != 0 ) && x509_name_cmp( &child->issuer, &child->subject ) == 0 )
markrad	0:cdf462088d13	2044	self_cnt++;
markrad	0:cdf462088d13	2045
markrad	0:cdf462088d13	2046	/* path_cnt is 0 for the first intermediate CA */
markrad	0:cdf462088d13	2047	if( 1 + path_cnt > MBEDTLS_X509_MAX_INTERMEDIATE_CA )
markrad	0:cdf462088d13	2048	{
markrad	0:cdf462088d13	2049	*flags \|= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
markrad	0:cdf462088d13	2050	return( MBEDTLS_ERR_X509_CERT_VERIFY_FAILED );
markrad	0:cdf462088d13	2051	}
markrad	0:cdf462088d13	2052
markrad	0:cdf462088d13	2053	if( mbedtls_x509_time_is_past( &child->valid_to ) )
markrad	0:cdf462088d13	2054	*flags \|= MBEDTLS_X509_BADCERT_EXPIRED;
markrad	0:cdf462088d13	2055
markrad	0:cdf462088d13	2056	if( mbedtls_x509_time_is_future( &child->valid_from ) )
markrad	0:cdf462088d13	2057	*flags \|= MBEDTLS_X509_BADCERT_FUTURE;
markrad	0:cdf462088d13	2058
markrad	0:cdf462088d13	2059	if( x509_profile_check_md_alg( profile, child->sig_md ) != 0 )
markrad	0:cdf462088d13	2060	*flags \|= MBEDTLS_X509_BADCERT_BAD_MD;
markrad	0:cdf462088d13	2061
markrad	0:cdf462088d13	2062	if( x509_profile_check_pk_alg( profile, child->sig_pk ) != 0 )
markrad	0:cdf462088d13	2063	*flags \|= MBEDTLS_X509_BADCERT_BAD_PK;
markrad	0:cdf462088d13	2064
markrad	0:cdf462088d13	2065	md_info = mbedtls_md_info_from_type( child->sig_md );
markrad	0:cdf462088d13	2066	if( md_info == NULL )
markrad	0:cdf462088d13	2067	{
markrad	0:cdf462088d13	2068	/*
markrad	0:cdf462088d13	2069	* Cannot check 'unknown' hash
markrad	0:cdf462088d13	2070	*/
markrad	0:cdf462088d13	2071	*flags \|= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
markrad	0:cdf462088d13	2072	}
markrad	0:cdf462088d13	2073	else
markrad	0:cdf462088d13	2074	{
markrad	0:cdf462088d13	2075	mbedtls_md( md_info, child->tbs.p, child->tbs.len, hash );
markrad	0:cdf462088d13	2076
markrad	0:cdf462088d13	2077	if( x509_profile_check_key( profile, child->sig_pk, &parent->pk ) != 0 )
markrad	0:cdf462088d13	2078	*flags \|= MBEDTLS_X509_BADCERT_BAD_KEY;
markrad	0:cdf462088d13	2079
markrad	0:cdf462088d13	2080	if( mbedtls_pk_verify_ext( child->sig_pk, child->sig_opts, &parent->pk,
markrad	0:cdf462088d13	2081	child->sig_md, hash, mbedtls_md_get_size( md_info ),
markrad	0:cdf462088d13	2082	child->sig.p, child->sig.len ) != 0 )
markrad	0:cdf462088d13	2083	{
markrad	0:cdf462088d13	2084	*flags \|= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
markrad	0:cdf462088d13	2085	}
markrad	0:cdf462088d13	2086	}
markrad	0:cdf462088d13	2087
markrad	0:cdf462088d13	2088	#if defined(MBEDTLS_X509_CRL_PARSE_C)
markrad	0:cdf462088d13	2089	/* Check trusted CA's CRL for the given crt */
markrad	0:cdf462088d13	2090	*flags \|= x509_crt_verifycrl(child, parent, ca_crl, profile );
markrad	0:cdf462088d13	2091	#endif
markrad	0:cdf462088d13	2092
markrad	0:cdf462088d13	2093	/* Look for a grandparent in trusted CAs */
markrad	0:cdf462088d13	2094	for( grandparent = trust_ca;
markrad	0:cdf462088d13	2095	grandparent != NULL;
markrad	0:cdf462088d13	2096	grandparent = grandparent->next )
markrad	0:cdf462088d13	2097	{
markrad	0:cdf462088d13	2098	if( x509_crt_check_parent( parent, grandparent,
markrad	0:cdf462088d13	2099	0, path_cnt == 0 ) == 0 )
markrad	0:cdf462088d13	2100	break;
markrad	0:cdf462088d13	2101	}
markrad	0:cdf462088d13	2102
markrad	0:cdf462088d13	2103	if( grandparent != NULL )
markrad	0:cdf462088d13	2104	{
markrad	0:cdf462088d13	2105	ret = x509_crt_verify_top( parent, grandparent, ca_crl, profile,
markrad	0:cdf462088d13	2106	path_cnt + 1, self_cnt, &parent_flags, f_vrfy, p_vrfy );
markrad	0:cdf462088d13	2107	if( ret != 0 )
markrad	0:cdf462088d13	2108	return( ret );
markrad	0:cdf462088d13	2109	}
markrad	0:cdf462088d13	2110	else
markrad	0:cdf462088d13	2111	{
markrad	0:cdf462088d13	2112	/* Look for a grandparent upwards the chain */
markrad	0:cdf462088d13	2113	for( grandparent = parent->next;
markrad	0:cdf462088d13	2114	grandparent != NULL;
markrad	0:cdf462088d13	2115	grandparent = grandparent->next )
markrad	0:cdf462088d13	2116	{
markrad	0:cdf462088d13	2117	/* +2 because the current step is not yet accounted for
markrad	0:cdf462088d13	2118	* and because max_pathlen is one higher than it should be.
markrad	0:cdf462088d13	2119	* Also self signed certificates do not count to the limit. */
markrad	0:cdf462088d13	2120	if( grandparent->max_pathlen > 0 &&
markrad	0:cdf462088d13	2121	grandparent->max_pathlen < 2 + path_cnt - self_cnt )
markrad	0:cdf462088d13	2122	{
markrad	0:cdf462088d13	2123	continue;
markrad	0:cdf462088d13	2124	}
markrad	0:cdf462088d13	2125
markrad	0:cdf462088d13	2126	if( x509_crt_check_parent( parent, grandparent,
markrad	0:cdf462088d13	2127	0, path_cnt == 0 ) == 0 )
markrad	0:cdf462088d13	2128	break;
markrad	0:cdf462088d13	2129	}
markrad	0:cdf462088d13	2130
markrad	0:cdf462088d13	2131	/* Is our parent part of the chain or at the top? */
markrad	0:cdf462088d13	2132	if( grandparent != NULL )
markrad	0:cdf462088d13	2133	{
markrad	0:cdf462088d13	2134	ret = x509_crt_verify_child( parent, grandparent, trust_ca, ca_crl,
markrad	0:cdf462088d13	2135	profile, path_cnt + 1, self_cnt, &parent_flags,
markrad	0:cdf462088d13	2136	f_vrfy, p_vrfy );
markrad	0:cdf462088d13	2137	if( ret != 0 )
markrad	0:cdf462088d13	2138	return( ret );
markrad	0:cdf462088d13	2139	}
markrad	0:cdf462088d13	2140	else
markrad	0:cdf462088d13	2141	{
markrad	0:cdf462088d13	2142	ret = x509_crt_verify_top( parent, trust_ca, ca_crl, profile,
markrad	0:cdf462088d13	2143	path_cnt + 1, self_cnt, &parent_flags,
markrad	0:cdf462088d13	2144	f_vrfy, p_vrfy );
markrad	0:cdf462088d13	2145	if( ret != 0 )
markrad	0:cdf462088d13	2146	return( ret );
markrad	0:cdf462088d13	2147	}
markrad	0:cdf462088d13	2148	}
markrad	0:cdf462088d13	2149
markrad	0:cdf462088d13	2150	/* child is verified to be a child of the parent, call verify callback */
markrad	0:cdf462088d13	2151	if( NULL != f_vrfy )
markrad	0:cdf462088d13	2152	if( ( ret = f_vrfy( p_vrfy, child, path_cnt, flags ) ) != 0 )
markrad	0:cdf462088d13	2153	return( ret );
markrad	0:cdf462088d13	2154
markrad	0:cdf462088d13	2155	*flags \|= parent_flags;
markrad	0:cdf462088d13	2156
markrad	0:cdf462088d13	2157	return( 0 );
markrad	0:cdf462088d13	2158	}
markrad	0:cdf462088d13	2159
markrad	0:cdf462088d13	2160	/*
markrad	0:cdf462088d13	2161	* Verify the certificate validity
markrad	0:cdf462088d13	2162	*/
markrad	0:cdf462088d13	2163	int mbedtls_x509_crt_verify( mbedtls_x509_crt *crt,
markrad	0:cdf462088d13	2164	mbedtls_x509_crt *trust_ca,
markrad	0:cdf462088d13	2165	mbedtls_x509_crl *ca_crl,
markrad	0:cdf462088d13	2166	const char cn, uint32_t flags,
markrad	0:cdf462088d13	2167	int (f_vrfy)(void , mbedtls_x509_crt , int, uint32_t ),
markrad	0:cdf462088d13	2168	void *p_vrfy )
markrad	0:cdf462088d13	2169	{
markrad	0:cdf462088d13	2170	return( mbedtls_x509_crt_verify_with_profile( crt, trust_ca, ca_crl,
markrad	0:cdf462088d13	2171	&mbedtls_x509_crt_profile_default, cn, flags, f_vrfy, p_vrfy ) );
markrad	0:cdf462088d13	2172	}
markrad	0:cdf462088d13	2173
markrad	0:cdf462088d13	2174
markrad	0:cdf462088d13	2175	/*
markrad	0:cdf462088d13	2176	* Verify the certificate validity, with profile
markrad	0:cdf462088d13	2177	*/
markrad	0:cdf462088d13	2178	int mbedtls_x509_crt_verify_with_profile( mbedtls_x509_crt *crt,
markrad	0:cdf462088d13	2179	mbedtls_x509_crt *trust_ca,
markrad	0:cdf462088d13	2180	mbedtls_x509_crl *ca_crl,
markrad	0:cdf462088d13	2181	const mbedtls_x509_crt_profile *profile,
markrad	0:cdf462088d13	2182	const char cn, uint32_t flags,
markrad	0:cdf462088d13	2183	int (f_vrfy)(void , mbedtls_x509_crt , int, uint32_t ),
markrad	0:cdf462088d13	2184	void *p_vrfy )
markrad	0:cdf462088d13	2185	{
markrad	0:cdf462088d13	2186	size_t cn_len;
markrad	0:cdf462088d13	2187	int ret;
markrad	0:cdf462088d13	2188	int pathlen = 0, selfsigned = 0;
markrad	0:cdf462088d13	2189	mbedtls_x509_crt *parent;
markrad	0:cdf462088d13	2190	mbedtls_x509_name *name;
markrad	0:cdf462088d13	2191	mbedtls_x509_sequence *cur = NULL;
markrad	0:cdf462088d13	2192	mbedtls_pk_type_t pk_type;
markrad	0:cdf462088d13	2193
markrad	0:cdf462088d13	2194	if( profile == NULL )
markrad	0:cdf462088d13	2195	return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
markrad	0:cdf462088d13	2196
markrad	0:cdf462088d13	2197	*flags = 0;
markrad	0:cdf462088d13	2198
markrad	0:cdf462088d13	2199	if( cn != NULL )
markrad	0:cdf462088d13	2200	{
markrad	0:cdf462088d13	2201	name = &crt->subject;
markrad	0:cdf462088d13	2202	cn_len = strlen( cn );
markrad	0:cdf462088d13	2203
markrad	0:cdf462088d13	2204	if( crt->ext_types & MBEDTLS_X509_EXT_SUBJECT_ALT_NAME )
markrad	0:cdf462088d13	2205	{
markrad	0:cdf462088d13	2206	cur = &crt->subject_alt_names;
markrad	0:cdf462088d13	2207
markrad	0:cdf462088d13	2208	while( cur != NULL )
markrad	0:cdf462088d13	2209	{
markrad	0:cdf462088d13	2210	if( cur->buf.len == cn_len &&
markrad	0:cdf462088d13	2211	x509_memcasecmp( cn, cur->buf.p, cn_len ) == 0 )
markrad	0:cdf462088d13	2212	break;
markrad	0:cdf462088d13	2213
markrad	0:cdf462088d13	2214	if( cur->buf.len > 2 &&
markrad	0:cdf462088d13	2215	memcmp( cur->buf.p, "*.", 2 ) == 0 &&
markrad	0:cdf462088d13	2216	x509_check_wildcard( cn, &cur->buf ) == 0 )
markrad	0:cdf462088d13	2217	{
markrad	0:cdf462088d13	2218	break;
markrad	0:cdf462088d13	2219	}
markrad	0:cdf462088d13	2220
markrad	0:cdf462088d13	2221	cur = cur->next;
markrad	0:cdf462088d13	2222	}
markrad	0:cdf462088d13	2223
markrad	0:cdf462088d13	2224	if( cur == NULL )
markrad	0:cdf462088d13	2225	*flags \|= MBEDTLS_X509_BADCERT_CN_MISMATCH;
markrad	0:cdf462088d13	2226	}
markrad	0:cdf462088d13	2227	else
markrad	0:cdf462088d13	2228	{
markrad	0:cdf462088d13	2229	while( name != NULL )
markrad	0:cdf462088d13	2230	{
markrad	0:cdf462088d13	2231	if( MBEDTLS_OID_CMP( MBEDTLS_OID_AT_CN, &name->oid ) == 0 )
markrad	0:cdf462088d13	2232	{
markrad	0:cdf462088d13	2233	if( name->val.len == cn_len &&
markrad	0:cdf462088d13	2234	x509_memcasecmp( name->val.p, cn, cn_len ) == 0 )
markrad	0:cdf462088d13	2235	break;
markrad	0:cdf462088d13	2236
markrad	0:cdf462088d13	2237	if( name->val.len > 2 &&
markrad	0:cdf462088d13	2238	memcmp( name->val.p, "*.", 2 ) == 0 &&
markrad	0:cdf462088d13	2239	x509_check_wildcard( cn, &name->val ) == 0 )
markrad	0:cdf462088d13	2240	break;
markrad	0:cdf462088d13	2241	}
markrad	0:cdf462088d13	2242
markrad	0:cdf462088d13	2243	name = name->next;
markrad	0:cdf462088d13	2244	}
markrad	0:cdf462088d13	2245
markrad	0:cdf462088d13	2246	if( name == NULL )
markrad	0:cdf462088d13	2247	*flags \|= MBEDTLS_X509_BADCERT_CN_MISMATCH;
markrad	0:cdf462088d13	2248	}
markrad	0:cdf462088d13	2249	}
markrad	0:cdf462088d13	2250
markrad	0:cdf462088d13	2251	/* Check the type and size of the key */
markrad	0:cdf462088d13	2252	pk_type = mbedtls_pk_get_type( &crt->pk );
markrad	0:cdf462088d13	2253
markrad	0:cdf462088d13	2254	if( x509_profile_check_pk_alg( profile, pk_type ) != 0 )
markrad	0:cdf462088d13	2255	*flags \|= MBEDTLS_X509_BADCERT_BAD_PK;
markrad	0:cdf462088d13	2256
markrad	0:cdf462088d13	2257	if( x509_profile_check_key( profile, pk_type, &crt->pk ) != 0 )
markrad	0:cdf462088d13	2258	*flags \|= MBEDTLS_X509_BADCERT_BAD_KEY;
markrad	0:cdf462088d13	2259
markrad	0:cdf462088d13	2260	/* Look for a parent in trusted CAs */
markrad	0:cdf462088d13	2261	for( parent = trust_ca; parent != NULL; parent = parent->next )
markrad	0:cdf462088d13	2262	{
markrad	0:cdf462088d13	2263	if( x509_crt_check_parent( crt, parent, 0, pathlen == 0 ) == 0 )
markrad	0:cdf462088d13	2264	break;
markrad	0:cdf462088d13	2265	}
markrad	0:cdf462088d13	2266
markrad	0:cdf462088d13	2267	if( parent != NULL )
markrad	0:cdf462088d13	2268	{
markrad	0:cdf462088d13	2269	ret = x509_crt_verify_top( crt, parent, ca_crl, profile,
markrad	0:cdf462088d13	2270	pathlen, selfsigned, flags, f_vrfy, p_vrfy );
markrad	0:cdf462088d13	2271	if( ret != 0 )
markrad	0:cdf462088d13	2272	return( ret );
markrad	0:cdf462088d13	2273	}
markrad	0:cdf462088d13	2274	else
markrad	0:cdf462088d13	2275	{
markrad	0:cdf462088d13	2276	/* Look for a parent upwards the chain */
markrad	0:cdf462088d13	2277	for( parent = crt->next; parent != NULL; parent = parent->next )
markrad	0:cdf462088d13	2278	if( x509_crt_check_parent( crt, parent, 0, pathlen == 0 ) == 0 )
markrad	0:cdf462088d13	2279	break;
markrad	0:cdf462088d13	2280
markrad	0:cdf462088d13	2281	/* Are we part of the chain or at the top? */
markrad	0:cdf462088d13	2282	if( parent != NULL )
markrad	0:cdf462088d13	2283	{
markrad	0:cdf462088d13	2284	ret = x509_crt_verify_child( crt, parent, trust_ca, ca_crl, profile,
markrad	0:cdf462088d13	2285	pathlen, selfsigned, flags, f_vrfy, p_vrfy );
markrad	0:cdf462088d13	2286	if( ret != 0 )
markrad	0:cdf462088d13	2287	return( ret );
markrad	0:cdf462088d13	2288	}
markrad	0:cdf462088d13	2289	else
markrad	0:cdf462088d13	2290	{
markrad	0:cdf462088d13	2291	ret = x509_crt_verify_top( crt, trust_ca, ca_crl, profile,
markrad	0:cdf462088d13	2292	pathlen, selfsigned, flags, f_vrfy, p_vrfy );
markrad	0:cdf462088d13	2293	if( ret != 0 )
markrad	0:cdf462088d13	2294	return( ret );
markrad	0:cdf462088d13	2295	}
markrad	0:cdf462088d13	2296	}
markrad	0:cdf462088d13	2297
markrad	0:cdf462088d13	2298	if( *flags != 0 )
markrad	0:cdf462088d13	2299	return( MBEDTLS_ERR_X509_CERT_VERIFY_FAILED );
markrad	0:cdf462088d13	2300
markrad	0:cdf462088d13	2301	return( 0 );
markrad	0:cdf462088d13	2302	}
markrad	0:cdf462088d13	2303
markrad	0:cdf462088d13	2304	/*
markrad	0:cdf462088d13	2305	* Initialize a certificate chain
markrad	0:cdf462088d13	2306	*/
markrad	0:cdf462088d13	2307	void mbedtls_x509_crt_init( mbedtls_x509_crt *crt )
markrad	0:cdf462088d13	2308	{
markrad	0:cdf462088d13	2309	memset( crt, 0, sizeof(mbedtls_x509_crt) );
markrad	0:cdf462088d13	2310	}
markrad	0:cdf462088d13	2311
markrad	0:cdf462088d13	2312	/*
markrad	0:cdf462088d13	2313	* Unallocate all certificate data
markrad	0:cdf462088d13	2314	*/
markrad	0:cdf462088d13	2315	void mbedtls_x509_crt_free( mbedtls_x509_crt *crt )
markrad	0:cdf462088d13	2316	{
markrad	0:cdf462088d13	2317	mbedtls_x509_crt *cert_cur = crt;
markrad	0:cdf462088d13	2318	mbedtls_x509_crt *cert_prv;
markrad	0:cdf462088d13	2319	mbedtls_x509_name *name_cur;
markrad	0:cdf462088d13	2320	mbedtls_x509_name *name_prv;
markrad	0:cdf462088d13	2321	mbedtls_x509_sequence *seq_cur;
markrad	0:cdf462088d13	2322	mbedtls_x509_sequence *seq_prv;
markrad	0:cdf462088d13	2323
markrad	0:cdf462088d13	2324	if( crt == NULL )
markrad	0:cdf462088d13	2325	return;
markrad	0:cdf462088d13	2326
markrad	0:cdf462088d13	2327	do
markrad	0:cdf462088d13	2328	{
markrad	0:cdf462088d13	2329	mbedtls_pk_free( &cert_cur->pk );
markrad	0:cdf462088d13	2330
markrad	0:cdf462088d13	2331	#if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
markrad	0:cdf462088d13	2332	mbedtls_free( cert_cur->sig_opts );
markrad	0:cdf462088d13	2333	#endif
markrad	0:cdf462088d13	2334
markrad	0:cdf462088d13	2335	name_cur = cert_cur->issuer.next;
markrad	0:cdf462088d13	2336	while( name_cur != NULL )
markrad	0:cdf462088d13	2337	{
markrad	0:cdf462088d13	2338	name_prv = name_cur;
markrad	0:cdf462088d13	2339	name_cur = name_cur->next;
markrad	0:cdf462088d13	2340	mbedtls_zeroize( name_prv, sizeof( mbedtls_x509_name ) );
markrad	0:cdf462088d13	2341	mbedtls_free( name_prv );
markrad	0:cdf462088d13	2342	}
markrad	0:cdf462088d13	2343
markrad	0:cdf462088d13	2344	name_cur = cert_cur->subject.next;
markrad	0:cdf462088d13	2345	while( name_cur != NULL )
markrad	0:cdf462088d13	2346	{
markrad	0:cdf462088d13	2347	name_prv = name_cur;
markrad	0:cdf462088d13	2348	name_cur = name_cur->next;
markrad	0:cdf462088d13	2349	mbedtls_zeroize( name_prv, sizeof( mbedtls_x509_name ) );
markrad	0:cdf462088d13	2350	mbedtls_free( name_prv );
markrad	0:cdf462088d13	2351	}
markrad	0:cdf462088d13	2352
markrad	0:cdf462088d13	2353	seq_cur = cert_cur->ext_key_usage.next;
markrad	0:cdf462088d13	2354	while( seq_cur != NULL )
markrad	0:cdf462088d13	2355	{
markrad	0:cdf462088d13	2356	seq_prv = seq_cur;
markrad	0:cdf462088d13	2357	seq_cur = seq_cur->next;
markrad	0:cdf462088d13	2358	mbedtls_zeroize( seq_prv, sizeof( mbedtls_x509_sequence ) );
markrad	0:cdf462088d13	2359	mbedtls_free( seq_prv );
markrad	0:cdf462088d13	2360	}
markrad	0:cdf462088d13	2361
markrad	0:cdf462088d13	2362	seq_cur = cert_cur->subject_alt_names.next;
markrad	0:cdf462088d13	2363	while( seq_cur != NULL )
markrad	0:cdf462088d13	2364	{
markrad	0:cdf462088d13	2365	seq_prv = seq_cur;
markrad	0:cdf462088d13	2366	seq_cur = seq_cur->next;
markrad	0:cdf462088d13	2367	mbedtls_zeroize( seq_prv, sizeof( mbedtls_x509_sequence ) );
markrad	0:cdf462088d13	2368	mbedtls_free( seq_prv );
markrad	0:cdf462088d13	2369	}
markrad	0:cdf462088d13	2370
markrad	0:cdf462088d13	2371	if( cert_cur->raw.p != NULL )
markrad	0:cdf462088d13	2372	{
markrad	0:cdf462088d13	2373	mbedtls_zeroize( cert_cur->raw.p, cert_cur->raw.len );
markrad	0:cdf462088d13	2374	mbedtls_free( cert_cur->raw.p );
markrad	0:cdf462088d13	2375	}
markrad	0:cdf462088d13	2376
markrad	0:cdf462088d13	2377	cert_cur = cert_cur->next;
markrad	0:cdf462088d13	2378	}
markrad	0:cdf462088d13	2379	while( cert_cur != NULL );
markrad	0:cdf462088d13	2380
markrad	0:cdf462088d13	2381	cert_cur = crt;
markrad	0:cdf462088d13	2382	do
markrad	0:cdf462088d13	2383	{
markrad	0:cdf462088d13	2384	cert_prv = cert_cur;
markrad	0:cdf462088d13	2385	cert_cur = cert_cur->next;
markrad	0:cdf462088d13	2386
markrad	0:cdf462088d13	2387	mbedtls_zeroize( cert_prv, sizeof( mbedtls_x509_crt ) );
markrad	0:cdf462088d13	2388	if( cert_prv != crt )
markrad	0:cdf462088d13	2389	mbedtls_free( cert_prv );
markrad	0:cdf462088d13	2390	}
markrad	0:cdf462088d13	2391	while( cert_cur != NULL );
markrad	0:cdf462088d13	2392	}
markrad	0:cdf462088d13	2393
markrad	0:cdf462088d13	2394	#endif /* MBEDTLS_X509_CRT_PARSE_C */

Repository toolbox

Export to desktop IDE

Repository details

Type:	Library
Created:	05 Jan 2017
Imports:	525
Forks:	0
Commits:	1
Dependents:	4
Dependencies:	0
Followers:	32

The code in this repository is Apache licensed.

library/x509_crt.c@0:cdf462088d13, 2017-01-05 (annotated)

Who changed what in which revision?

Repository toolbox

Repository details

Important Information for this Arm website

Access Warning