Wrapper functions to present a consistent interface to X.509 functions. More...

#include "lib/tls/x509.h"
#include "lib/tls/x509_internal.h"
#include "lib/tls/tortls.h"
#include "lib/crypt_ops/crypto_rand.h"
#include "lib/crypt_ops/crypto_util.h"
#include "lib/crypt_ops/compat_openssl.h"
#include <openssl/opensslv.h>
#include <openssl/err.h>
#include <openssl/asn1.h>
#include <openssl/bio.h>
#include <openssl/bn.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/rsa.h>
#include <openssl/x509.h>
#include "lib/log/log.h"
#include "lib/log/util_bug.h"
#include "lib/ctime/di_ops.h"
#include "lib/encoding/time_fmt.h"
#include <stdlib.h>
#include <string.h>

Macros
#define	TOR_X509_PRIVATE

#define	X509_get_notBefore_const(cert) ((const ASN1_TIME) X509_get_notBefore((X509 )cert))

#define	X509_get_notAfter_const(cert) ((const ASN1_TIME) X509_get_notAfter((X509 )cert))

#define	SERIAL_NUMBER_SIZE 8

Functions
static X509_NAME *	tor_x509_name_new (const char *cname)

X509 *	tor_tls_create_certificate (crypto_pk_t rsa, crypto_pk_t rsa_sign, const char cname, const char cname_sign, unsigned int cert_lifetime)

int	tor_x509_cert_set_cached_der_encoding (tor_x509_cert_t *cert)

void	tor_x509_cert_impl_free_ (tor_x509_cert_impl_t *cert)

tor_x509_cert_impl_t *	tor_x509_cert_impl_dup_ (tor_x509_cert_impl_t *cert)

void	tor_x509_cert_get_der (const tor_x509_cert_t cert, const uint8_t encoded_out, size_t size_out)

tor_x509_cert_t *	tor_x509_cert_decode (const uint8_t *certificate, size_t certificate_len)

crypto_pk_t *	tor_tls_cert_get_key (tor_x509_cert_t *cert)

int	tor_tls_cert_is_valid (int severity, const tor_x509_cert_t cert, const tor_x509_cert_t signing_cert, time_t now, int check_rsa_1024)

static void	log_cert_lifetime (int severity, const X509 cert, const char problem, time_t now)

int	tor_x509_check_cert_lifetime_internal (int severity, const X509 *cert, time_t now, int past_tolerance, int future_tolerance)

Detailed Description

Wrapper functions to present a consistent interface to X.509 functions.

Wrapper functions to present a consistent interface to X.509 functions from OpenSSL.

Definition in file x509_openssl.c.

Function Documentation

◆ log_cert_lifetime()

static void log_cert_lifetime	(	int	severity,
		const X509 *	cert,
		const char *	problem,
		time_t	now
	)

static

Warn that a certificate lifetime extends through a certain range.

Definition at line 367 of file x509_openssl.c.

◆ tor_tls_cert_get_key()

crypto_pk_t* tor_tls_cert_get_key ( tor_x509_cert_t * cert )

Return a newly allocated copy of the public key that a certificate certifies. Watch out! This returns NULL if the cert's key is not RSA.

Definition at line 278 of file x509_openssl.c.

◆ tor_tls_cert_is_valid()

int tor_tls_cert_is_valid	(	int	severity,
		const tor_x509_cert_t *	cert,
		const tor_x509_cert_t *	signing_cert,
		time_t	now,
		int	check_rsa_1024
	)

Check whether cert is well-formed, currently live, and correctly signed by the public key in signing_cert. If check_rsa_1024, make sure that it has an RSA key with 1024 bits; otherwise, just check that the key is long enough. Return 1 if the cert is good, and 0 if it's bad or we couldn't check it.

Definition at line 301 of file x509_openssl.c.

◆ tor_tls_create_certificate()

X509* tor_tls_create_certificate	(	crypto_pk_t *	rsa,
		crypto_pk_t *	rsa_sign,
		const char *	cname,
		const char *	cname_sign,
		unsigned int	cert_lifetime
	)

Generate and sign an X509 certificate with the public key rsa, signed by the private key rsa_sign. The commonName of the certificate will be cname; the commonName of the issuer will be cname_sign. The cert will be valid for cert_lifetime seconds, starting from some time in the past.

Return a certificate on success, NULL on failure.

Definition at line 105 of file x509_openssl.c.

◆ tor_x509_cert_decode()

tor_x509_cert_t* tor_x509_cert_decode	(	const uint8_t *	certificate,
		size_t	certificate_len
	)

Read a DER-encoded X509 cert, of length exactly certificate_len, from a certificate. Return a newly allocated tor_x509_cert_t on success and NULL on failure.

Definition at line 238 of file x509_openssl.c.

◆ tor_x509_cert_get_der()

void tor_x509_cert_get_der	(	const tor_x509_cert_t *	cert,
		const uint8_t **	encoded_out,
		size_t *	size_out
	)

Set *encoded_out and *size_out to cert's encoded DER representation and length, respectively.

Definition at line 224 of file x509_openssl.c.

Referenced by add_x509_cert().

◆ tor_x509_cert_set_cached_der_encoding()

int tor_x509_cert_set_cached_der_encoding ( tor_x509_cert_t * cert )

Set the 'encoded' and 'encoded_len' fields of "cert" from cert->cert.

Definition at line 190 of file x509_openssl.c.

◆ tor_x509_check_cert_lifetime_internal()

int tor_x509_check_cert_lifetime_internal	(	int	severity,
		const X509 *	cert,
		time_t	now,
		int	past_tolerance,
		int	future_tolerance
	)

Helper: check whether cert is expired give or take past_tolerance seconds, or not-yet-valid give or take future_tolerance seconds. (Relative to the current time now.) If it is live, return 0. If it is not live, log a message and return -1.

Definition at line 428 of file x509_openssl.c.

◆ tor_x509_name_new()

static X509_NAME* tor_x509_name_new ( const char * cname )