x509.h File Reference

X.509 generic defines and structures. More...

#include "config.h"
#include "asn1.h"
#include "pk.h"
#include "rsa.h"

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Classes
struct	mbedtls_x509_time

Macros
#define	MBEDTLS_X509_MAX_INTERMEDIATE_CA   8
#define	MBEDTLS_X509_KU_DIGITAL_SIGNATURE   (0x80) /* bit 0 */
#define	MBEDTLS_X509_KU_NON_REPUDIATION   (0x40) /* bit 1 */
#define	MBEDTLS_X509_KU_KEY_ENCIPHERMENT   (0x20) /* bit 2 */
#define	MBEDTLS_X509_KU_DATA_ENCIPHERMENT   (0x10) /* bit 3 */
#define	MBEDTLS_X509_KU_KEY_AGREEMENT   (0x08) /* bit 4 */
#define	MBEDTLS_X509_KU_KEY_CERT_SIGN   (0x04) /* bit 5 */
#define	MBEDTLS_X509_KU_CRL_SIGN   (0x02) /* bit 6 */
#define	MBEDTLS_X509_KU_ENCIPHER_ONLY   (0x01) /* bit 7 */
#define	MBEDTLS_X509_KU_DECIPHER_ONLY   (0x8000) /* bit 8 */
#define	MBEDTLS_X509_NS_CERT_TYPE_SSL_CLIENT   (0x80) /* bit 0 */
#define	MBEDTLS_X509_NS_CERT_TYPE_SSL_SERVER   (0x40) /* bit 1 */
#define	MBEDTLS_X509_NS_CERT_TYPE_EMAIL   (0x20) /* bit 2 */
#define	MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING   (0x10) /* bit 3 */
#define	MBEDTLS_X509_NS_CERT_TYPE_RESERVED   (0x08) /* bit 4 */
#define	MBEDTLS_X509_NS_CERT_TYPE_SSL_CA   (0x04) /* bit 5 */
#define	MBEDTLS_X509_NS_CERT_TYPE_EMAIL_CA   (0x02) /* bit 6 */
#define	MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING_CA   (0x01) /* bit 7 */
#define	MBEDTLS_X509_EXT_AUTHORITY_KEY_IDENTIFIER   (1 << 0)
#define	MBEDTLS_X509_EXT_SUBJECT_KEY_IDENTIFIER   (1 << 1)
#define	MBEDTLS_X509_EXT_KEY_USAGE   (1 << 2)
#define	MBEDTLS_X509_EXT_CERTIFICATE_POLICIES   (1 << 3)
#define	MBEDTLS_X509_EXT_POLICY_MAPPINGS   (1 << 4)
#define	MBEDTLS_X509_EXT_SUBJECT_ALT_NAME   (1 << 5) /* Supported (DNS) */
#define	MBEDTLS_X509_EXT_ISSUER_ALT_NAME   (1 << 6)
#define	MBEDTLS_X509_EXT_SUBJECT_DIRECTORY_ATTRS   (1 << 7)
#define	MBEDTLS_X509_EXT_BASIC_CONSTRAINTS   (1 << 8) /* Supported */
#define	MBEDTLS_X509_EXT_NAME_CONSTRAINTS   (1 << 9)
#define	MBEDTLS_X509_EXT_POLICY_CONSTRAINTS   (1 << 10)
#define	MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE   (1 << 11)
#define	MBEDTLS_X509_EXT_CRL_DISTRIBUTION_POINTS   (1 << 12)
#define	MBEDTLS_X509_EXT_INIHIBIT_ANYPOLICY   (1 << 13)
#define	MBEDTLS_X509_EXT_FRESHEST_CRL   (1 << 14)
#define	MBEDTLS_X509_EXT_NS_CERT_TYPE   (1 << 16)
#define	MBEDTLS_X509_FORMAT_DER   1
#define	MBEDTLS_X509_FORMAT_PEM   2
#define	MBEDTLS_X509_MAX_DN_NAME_SIZE   256
#define	MBEDTLS_X509_SAFE_SNPRINTF
X509 Error codes
#define	MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE   -0x2080
#define	MBEDTLS_ERR_X509_UNKNOWN_OID   -0x2100
#define	MBEDTLS_ERR_X509_INVALID_FORMAT   -0x2180
#define	MBEDTLS_ERR_X509_INVALID_VERSION   -0x2200
#define	MBEDTLS_ERR_X509_INVALID_SERIAL   -0x2280
#define	MBEDTLS_ERR_X509_INVALID_ALG   -0x2300
#define	MBEDTLS_ERR_X509_INVALID_NAME   -0x2380
#define	MBEDTLS_ERR_X509_INVALID_DATE   -0x2400
#define	MBEDTLS_ERR_X509_INVALID_SIGNATURE   -0x2480
#define	MBEDTLS_ERR_X509_INVALID_EXTENSIONS   -0x2500
#define	MBEDTLS_ERR_X509_UNKNOWN_VERSION   -0x2580
#define	MBEDTLS_ERR_X509_UNKNOWN_SIG_ALG   -0x2600
#define	MBEDTLS_ERR_X509_SIG_MISMATCH   -0x2680
#define	MBEDTLS_ERR_X509_CERT_VERIFY_FAILED   -0x2700
#define	MBEDTLS_ERR_X509_CERT_UNKNOWN_FORMAT   -0x2780
#define	MBEDTLS_ERR_X509_BAD_INPUT_DATA   -0x2800
#define	MBEDTLS_ERR_X509_ALLOC_FAILED   -0x2880
#define	MBEDTLS_ERR_X509_FILE_IO_ERROR   -0x2900
#define	MBEDTLS_ERR_X509_BUFFER_TOO_SMALL   -0x2980
X509 Verify codes
#define	MBEDTLS_X509_BADCERT_EXPIRED   0x01
#define	MBEDTLS_X509_BADCERT_REVOKED   0x02
#define	MBEDTLS_X509_BADCERT_CN_MISMATCH   0x04
#define	MBEDTLS_X509_BADCERT_NOT_TRUSTED   0x08
#define	MBEDTLS_X509_BADCRL_NOT_TRUSTED   0x10
#define	MBEDTLS_X509_BADCRL_EXPIRED   0x20
#define	MBEDTLS_X509_BADCERT_MISSING   0x40
#define	MBEDTLS_X509_BADCERT_SKIP_VERIFY   0x80
#define	MBEDTLS_X509_BADCERT_OTHER   0x0100
#define	MBEDTLS_X509_BADCERT_FUTURE   0x0200
#define	MBEDTLS_X509_BADCRL_FUTURE   0x0400
#define	MBEDTLS_X509_BADCERT_KEY_USAGE   0x0800
#define	MBEDTLS_X509_BADCERT_EXT_KEY_USAGE   0x1000
#define	MBEDTLS_X509_BADCERT_NS_CERT_TYPE   0x2000
#define	MBEDTLS_X509_BADCERT_BAD_MD   0x4000
#define	MBEDTLS_X509_BADCERT_BAD_PK   0x8000
#define	MBEDTLS_X509_BADCERT_BAD_KEY   0x010000
#define	MBEDTLS_X509_BADCRL_BAD_MD   0x020000
#define	MBEDTLS_X509_BADCRL_BAD_PK   0x040000
#define	MBEDTLS_X509_BADCRL_BAD_KEY   0x080000

Typedefs
Structures for parsing X.509 certificates, CRLs and CSRs
typedef mbedtls_asn1_buf	mbedtls_x509_buf
typedef mbedtls_asn1_bitstring	mbedtls_x509_bitstring
typedef mbedtls_asn1_named_data	mbedtls_x509_name
typedef mbedtls_asn1_sequence	mbedtls_x509_sequence
typedef struct mbedtls_x509_time	mbedtls_x509_time

Functions
int	mbedtls_x509_dn_gets (char *buf, size_t size, const mbedtls_x509_name *dn)
	Store the certificate DN in printable form into buf; no more than size characters will be written. More...
int	mbedtls_x509_serial_gets (char *buf, size_t size, const mbedtls_x509_buf *serial)
	Store the certificate serial in printable form into buf; no more than size characters will be written. More...
int	mbedtls_x509_time_is_past (const mbedtls_x509_time *time)
	Check a given mbedtls_x509_time against the system time and tell if it's in the past. More...
int	mbedtls_x509_time_is_future (const mbedtls_x509_time *time)
	Check a given mbedtls_x509_time against the system time and tell if it's in the future. More...
int	mbedtls_x509_self_test (int verbose)
	Checkup routine. More...
int	mbedtls_x509_get_name (unsigned char **p, const unsigned char *end, mbedtls_x509_name *cur)
int	mbedtls_x509_get_alg_null (unsigned char **p, const unsigned char *end, mbedtls_x509_buf *alg)
int	mbedtls_x509_get_alg (unsigned char **p, const unsigned char *end, mbedtls_x509_buf *alg, mbedtls_x509_buf *params)
int	mbedtls_x509_get_rsassa_pss_params (const mbedtls_x509_buf *params, mbedtls_md_type_t *md_alg, mbedtls_md_type_t *mgf_md, int *salt_len)
int	mbedtls_x509_get_sig (unsigned char **p, const unsigned char *end, mbedtls_x509_buf *sig)
int	mbedtls_x509_get_sig_alg (const mbedtls_x509_buf *sig_oid, const mbedtls_x509_buf *sig_params, mbedtls_md_type_t *md_alg, mbedtls_pk_type_t *pk_alg, void **sig_opts)
int	mbedtls_x509_get_time (unsigned char **p, const unsigned char *end, mbedtls_x509_time *time)
int	mbedtls_x509_get_serial (unsigned char **p, const unsigned char *end, mbedtls_x509_buf *serial)
int	mbedtls_x509_get_ext (unsigned char **p, const unsigned char *end, mbedtls_x509_buf *ext, int tag)
int	mbedtls_x509_sig_alg_gets (char *buf, size_t size, const mbedtls_x509_buf *sig_oid, mbedtls_pk_type_t pk_alg, mbedtls_md_type_t md_alg, const void *sig_opts)
int	mbedtls_x509_key_size_helper (char *buf, size_t buf_size, const char *name)
int	mbedtls_x509_string_to_names (mbedtls_asn1_named_data **head, const char *name)
int	mbedtls_x509_set_extension (mbedtls_asn1_named_data **head, const char *oid, size_t oid_len, int critical, const unsigned char *val, size_t val_len)
int	mbedtls_x509_write_extensions (unsigned char **p, unsigned char *start, mbedtls_asn1_named_data *first)
int	mbedtls_x509_write_names (unsigned char **p, unsigned char *start, mbedtls_asn1_named_data *first)
int	mbedtls_x509_write_sig (unsigned char **p, unsigned char *start, const char *oid, size_t oid_len, unsigned char *sig, size_t size)

Detailed Description

X.509 generic defines and structures.

Copyright (C) 2006-2015, ARM Limited, All Rights Reserved SPDX-License-Identifier: Apache-2.0

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

This file is part of mbed TLS (https://tls.mbed.org)

Macro Definition Documentation

MBEDTLS_X509_EXT_AUTHORITY_KEY_IDENTIFIER

#define MBEDTLS_X509_EXT_AUTHORITY_KEY_IDENTIFIER   (1 << 0)

MBEDTLS_X509_EXT_BASIC_CONSTRAINTS

#define MBEDTLS_X509_EXT_BASIC_CONSTRAINTS   (1 << 8) /* Supported */

MBEDTLS_X509_EXT_CERTIFICATE_POLICIES

#define MBEDTLS_X509_EXT_CERTIFICATE_POLICIES   (1 << 3)

MBEDTLS_X509_EXT_CRL_DISTRIBUTION_POINTS

#define MBEDTLS_X509_EXT_CRL_DISTRIBUTION_POINTS   (1 << 12)

MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE

#define MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE   (1 << 11)

MBEDTLS_X509_EXT_FRESHEST_CRL

#define MBEDTLS_X509_EXT_FRESHEST_CRL   (1 << 14)

MBEDTLS_X509_EXT_INIHIBIT_ANYPOLICY

#define MBEDTLS_X509_EXT_INIHIBIT_ANYPOLICY   (1 << 13)

MBEDTLS_X509_EXT_ISSUER_ALT_NAME

#define MBEDTLS_X509_EXT_ISSUER_ALT_NAME   (1 << 6)

MBEDTLS_X509_EXT_KEY_USAGE

#define MBEDTLS_X509_EXT_KEY_USAGE   (1 << 2)

MBEDTLS_X509_EXT_NAME_CONSTRAINTS

#define MBEDTLS_X509_EXT_NAME_CONSTRAINTS   (1 << 9)

MBEDTLS_X509_EXT_NS_CERT_TYPE

#define MBEDTLS_X509_EXT_NS_CERT_TYPE   (1 << 16)

MBEDTLS_X509_EXT_POLICY_CONSTRAINTS

#define MBEDTLS_X509_EXT_POLICY_CONSTRAINTS   (1 << 10)

MBEDTLS_X509_EXT_POLICY_MAPPINGS

#define MBEDTLS_X509_EXT_POLICY_MAPPINGS   (1 << 4)

MBEDTLS_X509_EXT_SUBJECT_ALT_NAME

#define MBEDTLS_X509_EXT_SUBJECT_ALT_NAME   (1 << 5) /* Supported (DNS) */

MBEDTLS_X509_EXT_SUBJECT_DIRECTORY_ATTRS

#define MBEDTLS_X509_EXT_SUBJECT_DIRECTORY_ATTRS   (1 << 7)

MBEDTLS_X509_EXT_SUBJECT_KEY_IDENTIFIER

#define MBEDTLS_X509_EXT_SUBJECT_KEY_IDENTIFIER   (1 << 1)

MBEDTLS_X509_FORMAT_DER

#define MBEDTLS_X509_FORMAT_DER   1

MBEDTLS_X509_FORMAT_PEM

#define MBEDTLS_X509_FORMAT_PEM   2

MBEDTLS_X509_KU_CRL_SIGN

#define MBEDTLS_X509_KU_CRL_SIGN   (0x02) /* bit 6 */

MBEDTLS_X509_KU_DATA_ENCIPHERMENT

#define MBEDTLS_X509_KU_DATA_ENCIPHERMENT   (0x10) /* bit 3 */

MBEDTLS_X509_KU_DECIPHER_ONLY

#define MBEDTLS_X509_KU_DECIPHER_ONLY   (0x8000) /* bit 8 */

MBEDTLS_X509_KU_DIGITAL_SIGNATURE

#define MBEDTLS_X509_KU_DIGITAL_SIGNATURE   (0x80) /* bit 0 */

MBEDTLS_X509_KU_ENCIPHER_ONLY

#define MBEDTLS_X509_KU_ENCIPHER_ONLY   (0x01) /* bit 7 */

MBEDTLS_X509_KU_KEY_AGREEMENT

#define MBEDTLS_X509_KU_KEY_AGREEMENT   (0x08) /* bit 4 */

MBEDTLS_X509_KU_KEY_CERT_SIGN

#define MBEDTLS_X509_KU_KEY_CERT_SIGN   (0x04) /* bit 5 */

MBEDTLS_X509_KU_KEY_ENCIPHERMENT

#define MBEDTLS_X509_KU_KEY_ENCIPHERMENT   (0x20) /* bit 2 */

MBEDTLS_X509_KU_NON_REPUDIATION

#define MBEDTLS_X509_KU_NON_REPUDIATION   (0x40) /* bit 1 */

MBEDTLS_X509_MAX_DN_NAME_SIZE

#define MBEDTLS_X509_MAX_DN_NAME_SIZE   256

Maximum value size of a DN entry

MBEDTLS_X509_NS_CERT_TYPE_EMAIL

#define MBEDTLS_X509_NS_CERT_TYPE_EMAIL   (0x20) /* bit 2 */

MBEDTLS_X509_NS_CERT_TYPE_EMAIL_CA

#define MBEDTLS_X509_NS_CERT_TYPE_EMAIL_CA   (0x02) /* bit 6 */

MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING

#define MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING   (0x10) /* bit 3 */

MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING_CA

#define MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING_CA   (0x01) /* bit 7 */

MBEDTLS_X509_NS_CERT_TYPE_RESERVED

#define MBEDTLS_X509_NS_CERT_TYPE_RESERVED   (0x08) /* bit 4 */

MBEDTLS_X509_NS_CERT_TYPE_SSL_CA

#define MBEDTLS_X509_NS_CERT_TYPE_SSL_CA   (0x04) /* bit 5 */

MBEDTLS_X509_NS_CERT_TYPE_SSL_CLIENT

#define MBEDTLS_X509_NS_CERT_TYPE_SSL_CLIENT   (0x80) /* bit 0 */

MBEDTLS_X509_NS_CERT_TYPE_SSL_SERVER

#define MBEDTLS_X509_NS_CERT_TYPE_SSL_SERVER   (0x40) /* bit 1 */

MBEDTLS_X509_SAFE_SNPRINTF

#define MBEDTLS_X509_SAFE_SNPRINTF

Value:

do { \
 if( ret < 0 || (size_t) ret >= n ) \
 return( MBEDTLS_ERR_X509_BUFFER_TOO_SMALL ); \
 \
 n -= (size_t) ret; \
 p += (size_t) ret; \
 } while( 0 )

Function Documentation

mbedtls_x509_dn_gets()

int mbedtls_x509_dn_gets	(	char *	buf,
		size_t	size,
		const mbedtls_x509_name *	dn
	)

Store the certificate DN in printable form into buf; no more than size characters will be written.

Parameters

buf	Buffer to write to
size	Maximum size of buffer
dn	The X509 name to represent

Returns

The length of the string written (not including the terminated nul byte), or a negative error code.

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mbedtls_x509_get_alg()

int mbedtls_x509_get_alg	(	unsigned char **	p,
		const unsigned char *	end,
		mbedtls_x509_buf *	alg,
		mbedtls_x509_buf *	params
	)

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mbedtls_x509_get_alg_null()

int mbedtls_x509_get_alg_null	(	unsigned char **	p,
		const unsigned char *	end,
		mbedtls_x509_buf *	alg
	)

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mbedtls_x509_get_ext()

int mbedtls_x509_get_ext	(	unsigned char **	p,
		const unsigned char *	end,
		mbedtls_x509_buf *	ext,
		int	tag
	)

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mbedtls_x509_get_name()

int mbedtls_x509_get_name	(	unsigned char **	p,
		const unsigned char *	end,
		mbedtls_x509_name *	cur
	)

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mbedtls_x509_get_rsassa_pss_params()

int mbedtls_x509_get_rsassa_pss_params	(	const mbedtls_x509_buf *	params,
		mbedtls_md_type_t *	md_alg,
		mbedtls_md_type_t *	mgf_md,
		int *	salt_len
	)

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mbedtls_x509_get_serial()

int mbedtls_x509_get_serial	(	unsigned char **	p,
		const unsigned char *	end,
		mbedtls_x509_buf *	serial
	)

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mbedtls_x509_get_sig()

int mbedtls_x509_get_sig	(	unsigned char **	p,
		const unsigned char *	end,
		mbedtls_x509_buf *	sig
	)

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mbedtls_x509_get_sig_alg()

int mbedtls_x509_get_sig_alg	(	const mbedtls_x509_buf *	sig_oid,
		const mbedtls_x509_buf *	sig_params,
		mbedtls_md_type_t *	md_alg,
		mbedtls_pk_type_t *	pk_alg,
		void **	sig_opts
	)

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mbedtls_x509_get_time()

int mbedtls_x509_get_time	(	unsigned char **	p,
		const unsigned char *	end,
		mbedtls_x509_time *	time
	)

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mbedtls_x509_key_size_helper()

int mbedtls_x509_key_size_helper	(	char *	buf,
		size_t	buf_size,
		const char *	name
	)

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mbedtls_x509_self_test()

int mbedtls_x509_self_test

(

int

verbose

)

Checkup routine.

Returns

0 if successful, or 1 if the test failed

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mbedtls_x509_serial_gets()

int mbedtls_x509_serial_gets	(	char *	buf,
		size_t	size,
		const mbedtls_x509_buf *	serial
	)

Store the certificate serial in printable form into buf; no more than size characters will be written.

Parameters

buf	Buffer to write to
size	Maximum size of buffer
serial	The X509 serial to represent

Returns

The length of the string written (not including the terminated nul byte), or a negative error code.

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mbedtls_x509_set_extension()

int mbedtls_x509_set_extension	(	mbedtls_asn1_named_data **	head,
		const char *	oid,
		size_t	oid_len,
		int	critical,
		const unsigned char *	val,
		size_t	val_len
	)

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mbedtls_x509_sig_alg_gets()

int mbedtls_x509_sig_alg_gets	(	char *	buf,
		size_t	size,
		const mbedtls_x509_buf *	sig_oid,
		mbedtls_pk_type_t	pk_alg,
		mbedtls_md_type_t	md_alg,
		const void *	sig_opts
	)

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mbedtls_x509_string_to_names()

int mbedtls_x509_string_to_names	(	mbedtls_asn1_named_data **	head,
		const char *	name
	)

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mbedtls_x509_time_is_future()

int mbedtls_x509_time_is_future

(

const mbedtls_x509_time *

time

)

Check a given mbedtls_x509_time against the system time and tell if it's in the future.

Note

Intended usage is "if( is_future( valid_from ) ) ERROR". Hence the return value of 1 if on internal errors.

Parameters

time	mbedtls_x509_time to check

Returns

1 if the given time is in the future or an error occured, 0 otherwise.

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mbedtls_x509_time_is_past()

int mbedtls_x509_time_is_past

(

const mbedtls_x509_time *

time

)

Check a given mbedtls_x509_time against the system time and tell if it's in the past.

Note

Intended usage is "if( is_past( valid_to ) ) ERROR". Hence the return value of 1 if on internal errors.

Parameters

time	mbedtls_x509_time to check

Returns

1 if the given time is in the past or an error occured, 0 otherwise.

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mbedtls_x509_write_extensions()

int mbedtls_x509_write_extensions	(	unsigned char **	p,
		unsigned char *	start,
		mbedtls_asn1_named_data *	first
	)

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mbedtls_x509_write_names()

int mbedtls_x509_write_names	(	unsigned char **	p,
		unsigned char *	start,
		mbedtls_asn1_named_data *	first
	)

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mbedtls_x509_write_sig()

int mbedtls_x509_write_sig	(	unsigned char **	p,
		unsigned char *	start,
		const char *	oid,
		size_t	oid_len,
		unsigned char *	sig,
		size_t	size
	)

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