/*
* Copyright (C) 2003-2016 Free Software Foundation, Inc.
* Copyright (C) 2016-2017 Red Hat, Inc.
*
* Author: Nikos Mavrogiannopoulos
*
* This file is part of GnuTLS.
*
* The GnuTLS is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>
*
*/
/* This file contains functions to handle X.509 certificate generation.
*/
#include "gnutls_int.h"
#include <datum.h>
#include <global.h>
#include "errors.h"
#include <common.h>
#include <x509.h>
#include <gnutls/x509-ext.h>
#include <x509_b64.h>
#include "x509_int.h"
#include <libtasn1.h>
#include <pk.h>
static void disable_optional_stuff(gnutls_x509_crt_t cert);
/**
* gnutls_x509_crt_set_dn_by_oid:
* @crt: a certificate of type #gnutls_x509_crt_t
* @oid: holds an Object Identifier in a null terminated string
* @raw_flag: must be 0, or 1 if the data are DER encoded
* @name: a pointer to the name
* @sizeof_name: holds the size of @name
*
* This function will set the part of the name of the Certificate
* subject, specified by the given OID. The input string should be
* ASCII or UTF-8 encoded.
*
* Some helper macros with popular OIDs can be found in gnutls/x509.h
* With this function you can only set the known OIDs. You can test
* for known OIDs using gnutls_x509_dn_oid_known(). For OIDs that are
* not known (by gnutls) you should properly DER encode your data,
* and call this function with @raw_flag set.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_set_dn_by_oid(gnutls_x509_crt_t crt, const char *oid,
unsigned int raw_flag, const void *name,
unsigned int sizeof_name)
{
if (sizeof_name == 0 || name == NULL || crt == NULL) {
return GNUTLS_E_INVALID_REQUEST;
}
MODIFIED(crt);
return _gnutls_x509_set_dn_oid(crt->cert, "tbsCertificate.subject",
oid, raw_flag, name, sizeof_name);
}
/**
* gnutls_x509_crt_set_issuer_dn_by_oid:
* @crt: a certificate of type #gnutls_x509_crt_t
* @oid: holds an Object Identifier in a null terminated string
* @raw_flag: must be 0, or 1 if the data are DER encoded
* @name: a pointer to the name
* @sizeof_name: holds the size of @name
*
* This function will set the part of the name of the Certificate
* issuer, specified by the given OID. The input string should be
* ASCII or UTF-8 encoded.
*
* Some helper macros with popular OIDs can be found in gnutls/x509.h
* With this function you can only set the known OIDs. You can test
* for known OIDs using gnutls_x509_dn_oid_known(). For OIDs that are
* not known (by gnutls) you should properly DER encode your data,
* and call this function with @raw_flag set.
*
* Normally you do not need to call this function, since the signing
* operation will copy the signer's name as the issuer of the
* certificate.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_set_issuer_dn_by_oid(gnutls_x509_crt_t crt,
const char *oid,
unsigned int raw_flag,
const void *name,
unsigned int sizeof_name)
{
if (sizeof_name == 0 || name == NULL || crt == NULL) {
return GNUTLS_E_INVALID_REQUEST;
}
MODIFIED(crt);
return _gnutls_x509_set_dn_oid(crt->cert, "tbsCertificate.issuer",
oid, raw_flag, name, sizeof_name);
}
/**
* gnutls_x509_crt_set_proxy_dn:
* @crt: a gnutls_x509_crt_t type with the new proxy cert
* @eecrt: the end entity certificate that will be issuing the proxy
* @raw_flag: must be 0, or 1 if the CN is DER encoded
* @name: a pointer to the CN name, may be NULL (but MUST then be added later)
* @sizeof_name: holds the size of @name
*
* This function will set the subject in @crt to the end entity's
* @eecrt subject name, and add a single Common Name component @name
* of size @sizeof_name. This corresponds to the required proxy
* certificate naming style. Note that if @name is %NULL, you MUST
* set it later by using gnutls_x509_crt_set_dn_by_oid() or similar.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_set_proxy_dn(gnutls_x509_crt_t crt,
gnutls_x509_crt_t eecrt,
unsigned int raw_flag, const void *name,
unsigned int sizeof_name)
{
int result;
if (crt == NULL || eecrt == NULL) {
return GNUTLS_E_INVALID_REQUEST;
}
MODIFIED(crt);
result = asn1_copy_node(crt->cert, "tbsCertificate.subject",
eecrt->cert, "tbsCertificate.subject");
if (result != ASN1_SUCCESS) {
gnutls_assert();
return _gnutls_asn2err(result);
}
if (name && sizeof_name) {
return _gnutls_x509_set_dn_oid(crt->cert,
"tbsCertificate.subject",
GNUTLS_OID_X520_COMMON_NAME,
raw_flag, name,
sizeof_name);
}
return 0;
}
/**
* gnutls_x509_crt_set_version:
* @crt: a certificate of type #gnutls_x509_crt_t
* @version: holds the version number. For X.509v1 certificates must be 1.
*
* This function will set the version of the certificate. This must
* be one for X.509 version 1, and so on. Plain certificates without
* extensions must have version set to one.
*
* To create well-formed certificates, you must specify version 3 if
* you use any certificate extensions. Extensions are created by
* functions such as gnutls_x509_crt_set_subject_alt_name()
* or gnutls_x509_crt_set_key_usage().
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_set_version(gnutls_x509_crt_t crt, unsigned int version)
{
int result;
unsigned char null = version;
if (crt == NULL || version == 0 || version >= 0x80) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
MODIFIED(crt);
if (null > 0)
null--;
result =
asn1_write_value(crt->cert, "tbsCertificate.version", &null,
1);
if (result != ASN1_SUCCESS) {
gnutls_assert();
return _gnutls_asn2err(result);
}
return 0;
}
/**
* gnutls_x509_crt_set_key:
* @crt: a certificate of type #gnutls_x509_crt_t
* @key: holds a private key
*
* This function will set the public parameters from the given
* private key to the certificate.
*
* To export the public key (i.e., the SubjectPublicKeyInfo part), check
* gnutls_pubkey_import_x509().
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
*
**/
int
gnutls_x509_crt_set_key(gnutls_x509_crt_t crt, gnutls_x509_privkey_t key)
{
int result;
if (crt == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
MODIFIED(crt);
result = _gnutls_x509_encode_and_copy_PKI_params(crt->cert,
"tbsCertificate.subjectPublicKeyInfo",
&key->params);
if (result < 0) {
gnutls_assert();
return result;
}
return 0;
}
/**
* gnutls_x509_crt_set_crq:
* @crt: a certificate of type #gnutls_x509_crt_t
* @crq: holds a certificate request
*
* This function will set the name and public parameters as well as
* the extensions from the given certificate request to the certificate.
* Only RSA keys are currently supported.
*
* Note that this function will only set the @crq if it is self
* signed and the signature is correct. See gnutls_x509_crq_sign2().
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int gnutls_x509_crt_set_crq(gnutls_x509_crt_t crt, gnutls_x509_crq_t crq)
{
int result;
if (crt == NULL || crq == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
MODIFIED(crt);
result = gnutls_x509_crq_verify(crq, 0);
if (result < 0)
return gnutls_assert_val(result);
result = asn1_copy_node(crt->cert, "tbsCertificate.subject",
crq->crq,
"certificationRequestInfo.subject");
if (result != ASN1_SUCCESS) {
gnutls_assert();
return _gnutls_asn2err(result);
}
result =
asn1_copy_node(crt->cert,
"tbsCertificate.subjectPublicKeyInfo", crq->crq,
"certificationRequestInfo.subjectPKInfo");
if (result != ASN1_SUCCESS) {
gnutls_assert();
return _gnutls_asn2err(result);
}
return 0;
}
/**
* gnutls_x509_crt_set_crq_extensions:
* @crt: a certificate of type #gnutls_x509_crt_t
* @crq: holds a certificate request
*
* This function will set the extensions from the given request to the
* certificate.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
*
* Since: 2.8.0
**/
int
gnutls_x509_crt_set_crq_extensions(gnutls_x509_crt_t crt,
gnutls_x509_crq_t crq)
{
return gnutls_x509_crt_set_crq_extension_by_oid(crt, crq, NULL, 0);
}
/**
* gnutls_x509_crt_set_crq_extension_by_oid:
* @crt: a certificate of type #gnutls_x509_crt_t
* @crq: holds a certificate request
* @oid: the object identifier of the OID to copy
* @flags: should be zero
*
* This function will set the extension specify by @oid from the given request to the
* certificate.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
*
* Since: 3.5.1
**/
int
gnutls_x509_crt_set_crq_extension_by_oid(gnutls_x509_crt_t crt,
gnutls_x509_crq_t crq, const char *oid,
unsigned flags)
{
size_t i;
if (crt == NULL || crq == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
MODIFIED(crt);
for (i = 0;; i++) {
int result;
char local_oid[MAX_OID_SIZE];
size_t local_oid_size;
uint8_t *extensions;
size_t extensions_size;
unsigned int critical;
gnutls_datum_t ext;
local_oid_size = sizeof(local_oid);
result = gnutls_x509_crq_get_extension_info(crq, i, local_oid,
&local_oid_size,
&critical);
if (result < 0) {
if (result ==
GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE)
break;
gnutls_assert();
return result;
}
if (oid && strcmp(local_oid, oid) != 0)
continue;
extensions_size = 0;
result = gnutls_x509_crq_get_extension_data(crq, i, NULL,
&extensions_size);
if (result < 0) {
gnutls_assert();
return result;
}
extensions = gnutls_malloc(extensions_size);
if (extensions == NULL) {
gnutls_assert();
return GNUTLS_E_MEMORY_ERROR;
}
result =
gnutls_x509_crq_get_extension_data(crq, i, extensions,
&extensions_size);
if (result < 0) {
gnutls_assert();
gnutls_free(extensions);
return result;
}
ext.data = extensions;
ext.size = extensions_size;
result =
_gnutls_x509_crt_set_extension(crt, local_oid, &ext,
critical);
gnutls_free(extensions);
if (result < 0) {
gnutls_assert();
return result;
}
}
return 0;
}
/**
* gnutls_x509_crt_set_extension_by_oid:
* @crt: a certificate of type #gnutls_x509_crt_t
* @oid: holds an Object Identifier in null terminated string
* @buf: a pointer to a DER encoded data
* @sizeof_buf: holds the size of @buf
* @critical: should be non-zero if the extension is to be marked as critical
*
* This function will set an the extension, by the specified OID, in
* the certificate. The extension data should be binary data DER
* encoded.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_set_extension_by_oid(gnutls_x509_crt_t crt,
const char *oid, const void *buf,
size_t sizeof_buf,
unsigned int critical)
{
int result;
gnutls_datum_t der_data;
der_data.data = (void *) buf;
der_data.size = sizeof_buf;
if (crt == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
result =
_gnutls_x509_crt_set_extension(crt, oid, &der_data, critical);
if (result < 0) {
gnutls_assert();
return result;
}
return 0;
}
/**
* gnutls_x509_crt_set_basic_constraints:
* @crt: a certificate of type #gnutls_x509_crt_t
* @ca: true(1) or false(0). Depending on the Certificate authority status.
* @pathLenConstraint: non-negative error codes indicate maximum length of path,
* and negative error codes indicate that the pathLenConstraints field should
* not be present.
*
* This function will set the basicConstraints certificate extension.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_set_basic_constraints(gnutls_x509_crt_t crt,
unsigned int ca,
int pathLenConstraint)
{
int result;
gnutls_datum_t der_data;
if (crt == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
/* generate the extension.
*/
result = gnutls_x509_ext_export_basic_constraints(ca, pathLenConstraint, &der_data);
if (result < 0) {
gnutls_assert();
return result;
}
result =
_gnutls_x509_crt_set_extension(crt, "2.5.29.19", &der_data, 1);
_gnutls_free_datum(&der_data);
if (result < 0) {
gnutls_assert();
return result;
}
return 0;
}
/**
* gnutls_x509_crt_set_ca_status:
* @crt: a certificate of type #gnutls_x509_crt_t
* @ca: true(1) or false(0). Depending on the Certificate authority status.
*
* This function will set the basicConstraints certificate extension.
* Use gnutls_x509_crt_set_basic_constraints() if you want to control
* the pathLenConstraint field too.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int gnutls_x509_crt_set_ca_status(gnutls_x509_crt_t crt, unsigned int ca)
{
return gnutls_x509_crt_set_basic_constraints(crt, ca, -1);
}
/**
* gnutls_x509_crt_set_key_usage:
* @crt: a certificate of type #gnutls_x509_crt_t
* @usage: an ORed sequence of the GNUTLS_KEY_* elements.
*
* This function will set the keyUsage certificate extension.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_set_key_usage(gnutls_x509_crt_t crt, unsigned int usage)
{
int result;
gnutls_datum_t der_data;
if (crt == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
/* generate the extension.
*/
result =
gnutls_x509_ext_export_key_usage(usage, &der_data);
if (result < 0) {
gnutls_assert();
return result;
}
result =
_gnutls_x509_crt_set_extension(crt, "2.5.29.15", &der_data, 1);
_gnutls_free_datum(&der_data);
if (result < 0) {
gnutls_assert();
return result;
}
return 0;
}
/**
* gnutls_x509_crt_set_inhibit_anypolicy:
* @crt: a certificate of type #gnutls_x509_crt_t
* @skipcerts: number of certificates after which anypolicy is no longer acceptable.
*
* This function will set the Inhibit anyPolicy certificate extension.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_set_inhibit_anypolicy(gnutls_x509_crt_t crt, unsigned int skipcerts)
{
int ret;
gnutls_datum_t der_data;
if (crt == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
/* generate the extension.
*/
ret =
gnutls_x509_ext_export_inhibit_anypolicy(skipcerts, &der_data);
if (ret < 0) {
gnutls_assert();
return ret;
}
ret =
_gnutls_x509_crt_set_extension(crt, "2.5.29.54", &der_data, 1);
_gnutls_free_datum(&der_data);
if (ret < 0) {
gnutls_assert();
return ret;
}
return 0;
}
/**
* gnutls_x509_crt_set_subject_alternative_name:
* @crt: a certificate of type #gnutls_x509_crt_t
* @type: is one of the gnutls_x509_subject_alt_name_t enumerations
* @data_string: The data to be set, a (0) terminated string
*
* This function will set the subject alternative name certificate
* extension. This function assumes that data can be expressed as a null
* terminated string.
*
* The name of the function is unfortunate since it is inconsistent with
* gnutls_x509_crt_get_subject_alt_name().
*
* See gnutls_x509_crt_set_subject_alt_name() for more information.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_set_subject_alternative_name(gnutls_x509_crt_t crt,
gnutls_x509_subject_alt_name_t
type, const char *data_string)
{
if (crt == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
/* only handle text extensions */
if (type != GNUTLS_SAN_DNSNAME && type != GNUTLS_SAN_RFC822NAME &&
type != GNUTLS_SAN_URI) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
return gnutls_x509_crt_set_subject_alt_name(crt, type, data_string,
strlen(data_string),
GNUTLS_FSAN_SET);
}
/**
* gnutls_x509_crt_set_subject_alt_name:
* @crt: a certificate of type #gnutls_x509_crt_t
* @type: is one of the gnutls_x509_subject_alt_name_t enumerations
* @data: The data to be set
* @data_size: The size of data to be set
* @flags: GNUTLS_FSAN_SET to clear previous data or GNUTLS_FSAN_APPEND to append.
*
* This function will set the subject alternative name certificate
* extension. It can set the following types: %GNUTLS_SAN_DNSNAME as a text string,
* %GNUTLS_SAN_RFC822NAME as a text string, %GNUTLS_SAN_URI as a text string,
* %GNUTLS_SAN_IPADDRESS as a binary IP address (4 or 16 bytes),
* %GNUTLS_SAN_OTHERNAME_XMPP as a UTF8 string (since 3.5.0).
*
* Since version 3.5.7 the %GNUTLS_SAN_RFC822NAME, %GNUTLS_SAN_DNSNAME, and
* %GNUTLS_SAN_OTHERNAME_XMPP are converted to ACE format when necessary.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
*
* Since: 2.6.0
**/
int
gnutls_x509_crt_set_subject_alt_name(gnutls_x509_crt_t crt,
gnutls_x509_subject_alt_name_t type,
const void *data,
unsigned int data_size,
unsigned int flags)
{
int result;
gnutls_datum_t der_data = { NULL, 0 };
gnutls_datum_t prev_der_data = { NULL, 0 };
unsigned int critical = 0;
if (crt == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
/* Check if the extension already exists.
*/
if (flags & GNUTLS_FSAN_APPEND) {
result =
_gnutls_x509_crt_get_extension(crt, "2.5.29.17", 0,
&prev_der_data,
&critical);
if (result < 0
&& result != GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE) {
gnutls_assert();
return result;
}
}
/* generate the extension.
*/
result =
_gnutls_x509_ext_gen_subject_alt_name(type, NULL, data, data_size,
&prev_der_data,
&der_data);
if (result < 0) {
gnutls_assert();
goto finish;
}
result =
_gnutls_x509_crt_set_extension(crt, "2.5.29.17", &der_data,
critical);
_gnutls_free_datum(&der_data);
if (result < 0) {
gnutls_assert();
return result;
}
result = 0;
finish:
_gnutls_free_datum(&prev_der_data);
return result;
}
/**
* gnutls_x509_crt_set_issuer_alt_name:
* @crt: a certificate of type #gnutls_x509_crt_t
* @type: is one of the gnutls_x509_subject_alt_name_t enumerations
* @data: The data to be set
* @data_size: The size of data to be set
* @flags: GNUTLS_FSAN_SET to clear previous data or GNUTLS_FSAN_APPEND to append.
*
* This function will set the issuer alternative name certificate
* extension. It can set the same types as gnutls_x509_crt_set_subject_alt_name().
*
* Since version 3.5.7 the %GNUTLS_SAN_RFC822NAME, %GNUTLS_SAN_DNSNAME, and
* %GNUTLS_SAN_OTHERNAME_XMPP are converted to ACE format when necessary.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
*
* Since: 3.3.0
**/
int
gnutls_x509_crt_set_issuer_alt_name(gnutls_x509_crt_t crt,
gnutls_x509_subject_alt_name_t type,
const void *data,
unsigned int data_size,
unsigned int flags)
{
int result;
gnutls_datum_t der_data = { NULL, 0 };
gnutls_datum_t prev_der_data = { NULL, 0 };
unsigned int critical = 0;
if (crt == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
/* Check if the extension already exists.
*/
if (flags & GNUTLS_FSAN_APPEND) {
result =
_gnutls_x509_crt_get_extension(crt, "2.5.29.18", 0,
&prev_der_data,
&critical);
if (result < 0
&& result != GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE) {
gnutls_assert();
return result;
}
}
/* generate the extension.
*/
result =
_gnutls_x509_ext_gen_subject_alt_name(type, NULL, data, data_size,
&prev_der_data,
&der_data);
if (result < 0) {
gnutls_assert();
goto finish;
}
result =
_gnutls_x509_crt_set_extension(crt, "2.5.29.18", &der_data,
critical);
_gnutls_free_datum(&der_data);
if (result < 0) {
gnutls_assert();
return result;
}
result = 0;
finish:
_gnutls_free_datum(&prev_der_data);
return result;
}
int _gnutls_encode_othername_data(unsigned flags, const void *data, unsigned data_size, gnutls_datum_t *output)
{
int ret;
if (flags & GNUTLS_FSAN_ENCODE_OCTET_STRING) {
ret = _gnutls_x509_encode_string(ASN1_ETYPE_OCTET_STRING,
data, data_size, output);
} else if (flags & GNUTLS_FSAN_ENCODE_UTF8_STRING) {
ret = _gnutls_x509_encode_string(ASN1_ETYPE_UTF8_STRING,
data, data_size, output);
} else {
ret = _gnutls_set_datum(output, data, data_size);
}
return ret;
}
/**
* gnutls_x509_crt_set_subject_alt_othername:
* @crt: a certificate of type #gnutls_x509_crt_t
* @oid: The other name OID
* @data: The data to be set
* @data_size: The size of data to be set
* @flags: GNUTLS_FSAN_SET to clear previous data or GNUTLS_FSAN_APPEND to append.
*
* This function will set an "othername" to the subject alternative name certificate
* extension.
*
* The values set are set as binary values and are expected to have the proper DER encoding.
* For convenience the flags %GNUTLS_FSAN_ENCODE_OCTET_STRING and %GNUTLS_FSAN_ENCODE_UTF8_STRING
* can be used to encode the provided data.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
*
* Since: 3.5.0
**/
int
gnutls_x509_crt_set_subject_alt_othername(gnutls_x509_crt_t crt,
const char *oid,
const void *data,
unsigned int data_size,
unsigned int flags)
{
int result;
gnutls_datum_t der_data = { NULL, 0 };
gnutls_datum_t prev_der_data = { NULL, 0 };
gnutls_datum_t encoded_data = { NULL, 0 };
unsigned int critical = 0;
if (crt == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
/* Check if the extension already exists.
*/
if (flags & GNUTLS_FSAN_APPEND) {
result =
_gnutls_x509_crt_get_extension(crt, "2.5.29.17", 0,
&prev_der_data,
&critical);
if (result < 0
&& result != GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE) {
gnutls_assert();
return result;
}
}
result = _gnutls_encode_othername_data(flags, data, data_size, &encoded_data);
if (result < 0) {
gnutls_assert();
goto finish;
}
/* generate the extension.
*/
result =
_gnutls_x509_ext_gen_subject_alt_name(GNUTLS_SAN_OTHERNAME, oid,
encoded_data.data, encoded_data.size,
&prev_der_data, &der_data);
if (result < 0) {
gnutls_assert();
goto finish;
}
result =
_gnutls_x509_crt_set_extension(crt, "2.5.29.17", &der_data,
critical);
if (result < 0) {
gnutls_assert();
goto finish;
}
result = 0;
finish:
_gnutls_free_datum(&der_data);
_gnutls_free_datum(&prev_der_data);
_gnutls_free_datum(&encoded_data);
return result;
}
/**
* gnutls_x509_crt_set_issuer_alt_othername:
* @crt: a certificate of type #gnutls_x509_crt_t
* @oid: The other name OID
* @data: The data to be set
* @data_size: The size of data to be set
* @flags: GNUTLS_FSAN_SET to clear previous data or GNUTLS_FSAN_APPEND to append.
*
* This function will set an "othername" to the issuer alternative name certificate
* extension.
*
* The values set are set as binary values and are expected to have the proper DER encoding.
* For convenience the flags %GNUTLS_FSAN_ENCODE_OCTET_STRING and %GNUTLS_FSAN_ENCODE_UTF8_STRING
* can be used to encode the provided data.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
*
* Since: 3.5.0
**/
int
gnutls_x509_crt_set_issuer_alt_othername(gnutls_x509_crt_t crt,
const char *oid,
const void *data,
unsigned int data_size,
unsigned int flags)
{
int result;
gnutls_datum_t der_data = { NULL, 0 };
gnutls_datum_t prev_der_data = { NULL, 0 };
gnutls_datum_t encoded_data = {NULL, 0};
unsigned int critical = 0;
if (crt == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
/* Check if the extension already exists.
*/
if (flags & GNUTLS_FSAN_APPEND) {
result =
_gnutls_x509_crt_get_extension(crt, "2.5.29.18", 0,
&prev_der_data,
&critical);
if (result < 0
&& result != GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE) {
gnutls_assert();
return result;
}
}
result = _gnutls_encode_othername_data(flags, data, data_size, &encoded_data);
if (result < 0) {
gnutls_assert();
goto finish;
}
/* generate the extension.
*/
result =
_gnutls_x509_ext_gen_subject_alt_name(GNUTLS_SAN_OTHERNAME, oid,
encoded_data.data, encoded_data.size,
&prev_der_data, &der_data);
if (result < 0) {
gnutls_assert();
goto finish;
}
result =
_gnutls_x509_crt_set_extension(crt, "2.5.29.18", &der_data,
critical);
if (result < 0) {
gnutls_assert();
goto finish;
}
result = 0;
finish:
_gnutls_free_datum(&der_data);
_gnutls_free_datum(&prev_der_data);
_gnutls_free_datum(&encoded_data);
return result;
}
/**
* gnutls_x509_crt_set_proxy:
* @crt: a certificate of type #gnutls_x509_crt_t
* @pathLenConstraint: non-negative error codes indicate maximum length of path,
* and negative error codes indicate that the pathLenConstraints field should
* not be present.
* @policyLanguage: OID describing the language of @policy.
* @policy: uint8_t byte array with policy language, can be %NULL
* @sizeof_policy: size of @policy.
*
* This function will set the proxyCertInfo extension.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_set_proxy(gnutls_x509_crt_t crt,
int pathLenConstraint,
const char *policyLanguage,
const char *policy, size_t sizeof_policy)
{
int result;
gnutls_datum_t der_data;
if (crt == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
/* generate the extension.
*/
result = gnutls_x509_ext_export_proxy(pathLenConstraint,
policyLanguage,
policy, sizeof_policy,
&der_data);
if (result < 0) {
gnutls_assert();
return result;
}
result = _gnutls_x509_crt_set_extension(crt, "1.3.6.1.5.5.7.1.14",
&der_data, 1);
_gnutls_free_datum(&der_data);
if (result < 0) {
gnutls_assert();
return result;
}
return 0;
}
/**
* gnutls_x509_crt_set_private_key_usage_period:
* @crt: a certificate of type #gnutls_x509_crt_t
* @activation: The activation time
* @expiration: The expiration time
*
* This function will set the private key usage period extension (2.5.29.16).
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_set_private_key_usage_period(gnutls_x509_crt_t crt,
time_t activation,
time_t expiration)
{
int result;
gnutls_datum_t der_data;
if (crt == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
result = gnutls_x509_ext_export_private_key_usage_period(activation,
expiration, &der_data);
if (result < 0) {
gnutls_assert();
goto cleanup;
}
result = _gnutls_x509_crt_set_extension(crt, "2.5.29.16",
&der_data, 0);
_gnutls_free_datum(&der_data);
cleanup:
return result;
}
/**
* gnutls_x509_crt_sign2:
* @crt: a certificate of type #gnutls_x509_crt_t
* @issuer: is the certificate of the certificate issuer
* @issuer_key: holds the issuer's private key
* @dig: The message digest to use, %GNUTLS_DIG_SHA256 is a safe choice
* @flags: must be 0
*
* This function will sign the certificate with the issuer's private key, and
* will copy the issuer's information into the certificate.
*
* This must be the last step in a certificate generation since all
* the previously set parameters are now signed.
*
* A known limitation of this function is, that a newly-signed certificate will not
* be fully functional (e.g., for signature verification), until it
* is exported an re-imported.
*
* After GnuTLS 3.6.1 the value of @dig may be %GNUTLS_DIG_UNKNOWN,
* and in that case, a suitable but reasonable for the key algorithm will be selected.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_sign2(gnutls_x509_crt_t crt, gnutls_x509_crt_t issuer,
gnutls_x509_privkey_t issuer_key,
gnutls_digest_algorithm_t dig, unsigned int flags)
{
int result;
gnutls_privkey_t privkey;
if (crt == NULL || issuer == NULL || issuer_key == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
MODIFIED(crt);
result = gnutls_privkey_init(&privkey);
if (result < 0) {
gnutls_assert();
return result;
}
result = gnutls_privkey_import_x509(privkey, issuer_key, 0);
if (result < 0) {
gnutls_assert();
goto fail;
}
result =
gnutls_x509_crt_privkey_sign(crt, issuer, privkey, dig, flags);
if (result < 0) {
gnutls_assert();
goto fail;
}
result = 0;
fail:
gnutls_privkey_deinit(privkey);
return result;
}
/**
* gnutls_x509_crt_sign:
* @crt: a certificate of type #gnutls_x509_crt_t
* @issuer: is the certificate of the certificate issuer
* @issuer_key: holds the issuer's private key
*
* This function is the same a gnutls_x509_crt_sign2() with no flags,
* and an appropriate hash algorithm. The hash algorithm used may
* vary between versions of GnuTLS, and it is tied to the security
* level of the issuer's public key.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_sign(gnutls_x509_crt_t crt, gnutls_x509_crt_t issuer,
gnutls_x509_privkey_t issuer_key)
{
return gnutls_x509_crt_sign2(crt, issuer, issuer_key,
0, 0);
}
/**
* gnutls_x509_crt_set_activation_time:
* @cert: a certificate of type #gnutls_x509_crt_t
* @act_time: The actual time
*
* This function will set the time this certificate was or will be
* activated.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_set_activation_time(gnutls_x509_crt_t cert,
time_t act_time)
{
if (cert == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
MODIFIED(cert);
return _gnutls_x509_set_time(cert->cert,
"tbsCertificate.validity.notBefore",
act_time, 0);
}
/**
* gnutls_x509_crt_set_expiration_time:
* @cert: a certificate of type #gnutls_x509_crt_t
* @exp_time: The actual time
*
* This function will set the time this Certificate will expire.
* Setting an expiration time to (time_t)-1 will set
* to the no well-defined expiration date value.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_set_expiration_time(gnutls_x509_crt_t cert,
time_t exp_time)
{
if (cert == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
MODIFIED(cert);
return _gnutls_x509_set_time(cert->cert,
"tbsCertificate.validity.notAfter",
exp_time, 0);
}
/**
* gnutls_x509_crt_set_serial:
* @cert: a certificate of type #gnutls_x509_crt_t
* @serial: The serial number
* @serial_size: Holds the size of the serial field.
*
* This function will set the X.509 certificate's serial number.
* While the serial number is an integer, it is often handled
* as an opaque field by several CAs. For this reason this function
* accepts any kind of data as a serial number. To be consistent
* with the X.509/PKIX specifications the provided @serial should be
* a big-endian positive number (i.e. it's leftmost bit should be zero).
*
* The size of the serial is restricted to 20 bytes maximum by RFC5280.
* This function allows writing more than 20 bytes but the generated
* certificates in that case may be rejected by other implementations.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_set_serial(gnutls_x509_crt_t cert, const void *serial,
size_t serial_size)
{
int ret;
unsigned all_zero, i;
const unsigned char *pserial = serial;
if (cert == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
/* check for non-zero serial */
all_zero = 1;
for (i=0;i<serial_size;i++) {
if (pserial[i] != 0) {
all_zero = 0;
break;
}
}
if (all_zero) {
_gnutls_debug_log("error: certificate serial is zero\n");
return GNUTLS_E_INVALID_REQUEST;
}
MODIFIED(cert);
ret =
asn1_write_value(cert->cert, "tbsCertificate.serialNumber",
serial, serial_size);
if (ret != ASN1_SUCCESS) {
gnutls_assert();
return _gnutls_asn2err(ret);
}
return 0;
}
/**
* gnutls_x509_crt_set_issuer_unique_id:
* @cert: a certificate of type #gnutls_x509_crt_t
* @id: The unique ID
* @id_size: Holds the size of the unique ID.
*
* This function will set the X.509 certificate's issuer unique ID field.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
*
* Since: 3.4.7
**/
int
gnutls_x509_crt_set_issuer_unique_id(gnutls_x509_crt_t cert, const void *id,
size_t id_size)
{
int ret;
if (cert == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
MODIFIED(cert);
ret =
asn1_write_value(cert->cert, "tbsCertificate.issuerUniqueID",
id, id_size*8);
if (ret != ASN1_SUCCESS) {
gnutls_assert();
return _gnutls_asn2err(ret);
}
return 0;
}
/**
* gnutls_x509_crt_set_subject_unique_id:
* @cert: a certificate of type #gnutls_x509_crt_t
* @id: The unique ID
* @id_size: Holds the size of the unique ID.
*
* This function will set the X.509 certificate's subject unique ID field.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
*
* Since: 3.4.7
**/
int
gnutls_x509_crt_set_subject_unique_id(gnutls_x509_crt_t cert, const void *id,
size_t id_size)
{
int ret;
if (cert == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
MODIFIED(cert);
ret =
asn1_write_value(cert->cert, "tbsCertificate.subjectUniqueID",
id, id_size*8);
if (ret != ASN1_SUCCESS) {
gnutls_assert();
return _gnutls_asn2err(ret);
}
return 0;
}
/* If OPTIONAL fields have not been initialized then
* disable them.
*/
static void disable_optional_stuff(gnutls_x509_crt_t cert)
{
asn1_data_node_st n;
asn1_node node;
unsigned remove_subject_unique_id = 1;
unsigned remove_issuer_unique_id = 1;
node = asn1_find_node(cert->cert, "tbsCertificate.issuerUniqueID");
if (node) {
if (asn1_read_node_value(node, &n) == ASN1_SUCCESS && n.value_len != 0)
remove_issuer_unique_id = 0;
}
node = asn1_find_node(cert->cert, "tbsCertificate.subjectUniqueID");
if (node) {
if (asn1_read_node_value(node, &n) == ASN1_SUCCESS && n.value_len != 0)
remove_subject_unique_id = 0;
}
if (remove_issuer_unique_id)
(void)asn1_write_value(cert->cert, "tbsCertificate.issuerUniqueID", NULL,
0);
if (remove_subject_unique_id)
(void)asn1_write_value(cert->cert, "tbsCertificate.subjectUniqueID",
NULL, 0);
if (cert->use_extensions == 0) {
_gnutls_debug_log("Disabling X.509 extensions.\n");
(void)asn1_write_value(cert->cert, "tbsCertificate.extensions",
NULL, 0);
}
return;
}
/**
* gnutls_x509_crt_set_crl_dist_points:
* @crt: a certificate of type #gnutls_x509_crt_t
* @type: is one of the gnutls_x509_subject_alt_name_t enumerations
* @data_string: The data to be set
* @reason_flags: revocation reasons
*
* This function will set the CRL distribution points certificate extension.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_set_crl_dist_points(gnutls_x509_crt_t crt,
gnutls_x509_subject_alt_name_t type,
const void *data_string,
unsigned int reason_flags)
{
return gnutls_x509_crt_set_crl_dist_points2(crt, type, data_string,
strlen(data_string),
reason_flags);
}
/**
* gnutls_x509_crt_set_crl_dist_points2:
* @crt: a certificate of type #gnutls_x509_crt_t
* @type: is one of the gnutls_x509_subject_alt_name_t enumerations
* @data: The data to be set
* @data_size: The data size
* @reason_flags: revocation reasons
*
* This function will set the CRL distribution points certificate extension.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
*
* Since: 2.6.0
**/
int
gnutls_x509_crt_set_crl_dist_points2(gnutls_x509_crt_t crt,
gnutls_x509_subject_alt_name_t type,
const void *data,
unsigned int data_size,
unsigned int reason_flags)
{
int ret;
gnutls_datum_t der_data = { NULL, 0 };
gnutls_datum_t old_der = { NULL, 0 };
unsigned int critical;
gnutls_x509_crl_dist_points_t cdp = NULL;
gnutls_datum_t san;
if (crt == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
ret = gnutls_x509_crl_dist_points_init(&cdp);
if (ret < 0)
return gnutls_assert_val(ret);
/* Check if the extension already exists.
*/
ret =
_gnutls_x509_crt_get_extension(crt, "2.5.29.31", 0, &old_der,
&critical);
if (ret >= 0 && old_der.data != NULL) {
ret = gnutls_x509_ext_import_crl_dist_points(&old_der, cdp, 0);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
}
san.data = (void*)data;
san.size = data_size;
ret = gnutls_x509_crl_dist_points_set(cdp, type, &san, reason_flags);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
/* generate the extension.
*/
ret =
gnutls_x509_ext_export_crl_dist_points(cdp, &der_data);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
ret =
_gnutls_x509_crt_set_extension(crt, "2.5.29.31", &der_data, 0);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
ret = 0;
cleanup:
_gnutls_free_datum(&der_data);
_gnutls_free_datum(&old_der);
if (cdp != NULL)
gnutls_x509_crl_dist_points_deinit(cdp);
return ret;
}
/**
* gnutls_x509_crt_cpy_crl_dist_points:
* @dst: a certificate of type #gnutls_x509_crt_t
* @src: the certificate where the dist points will be copied from
*
* This function will copy the CRL distribution points certificate
* extension, from the source to the destination certificate.
* This may be useful to copy from a CA certificate to issued ones.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_cpy_crl_dist_points(gnutls_x509_crt_t dst,
gnutls_x509_crt_t src)
{
int result;
gnutls_datum_t der_data;
unsigned int critical;
if (dst == NULL || src == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
/* Check if the extension already exists.
*/
result =
_gnutls_x509_crt_get_extension(src, "2.5.29.31", 0, &der_data,
&critical);
if (result < 0) {
gnutls_assert();
return result;
}
result =
_gnutls_x509_crt_set_extension(dst, "2.5.29.31", &der_data,
critical);
_gnutls_free_datum(&der_data);
if (result < 0) {
gnutls_assert();
return result;
}
return 0;
}
/**
* gnutls_x509_crt_set_subject_key_id:
* @cert: a certificate of type #gnutls_x509_crt_t
* @id: The key ID
* @id_size: Holds the size of the subject key ID field.
*
* This function will set the X.509 certificate's subject key ID
* extension.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_set_subject_key_id(gnutls_x509_crt_t cert,
const void *id, size_t id_size)
{
int result;
gnutls_datum_t old_id, der_data;
gnutls_datum_t d_id;
unsigned int critical;
if (cert == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
/* Check if the extension already exists.
*/
result =
_gnutls_x509_crt_get_extension(cert, "2.5.29.14", 0, &old_id,
&critical);
if (result >= 0)
_gnutls_free_datum(&old_id);
if (result != GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
/* generate the extension.
*/
d_id.data = (void*)id;
d_id.size = id_size;
result = gnutls_x509_ext_export_subject_key_id(&d_id, &der_data);
if (result < 0) {
gnutls_assert();
return result;
}
result =
_gnutls_x509_crt_set_extension(cert, "2.5.29.14", &der_data,
0);
_gnutls_free_datum(&der_data);
if (result < 0) {
gnutls_assert();
return result;
}
return 0;
}
/**
* gnutls_x509_crt_set_authority_key_id:
* @cert: a certificate of type #gnutls_x509_crt_t
* @id: The key ID
* @id_size: Holds the size of the key ID field.
*
* This function will set the X.509 certificate's authority key ID extension.
* Only the keyIdentifier field can be set with this function.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_set_authority_key_id(gnutls_x509_crt_t cert,
const void *id, size_t id_size)
{
int result;
gnutls_datum_t old_id, der_data;
unsigned int critical;
if (cert == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
/* Check if the extension already exists.
*/
result =
_gnutls_x509_crt_get_extension(cert, "2.5.29.35", 0, &old_id,
&critical);
if (result >= 0)
_gnutls_free_datum(&old_id);
if (result != GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
/* generate the extension.
*/
result = _gnutls_x509_ext_gen_auth_key_id(id, id_size, &der_data);
if (result < 0) {
gnutls_assert();
return result;
}
result =
_gnutls_x509_crt_set_extension(cert, "2.5.29.35", &der_data,
0);
_gnutls_free_datum(&der_data);
if (result < 0) {
gnutls_assert();
return result;
}
return 0;
}
/**
* gnutls_x509_crt_set_key_purpose_oid:
* @cert: a certificate of type #gnutls_x509_crt_t
* @oid: a pointer to a null terminated string that holds the OID
* @critical: Whether this extension will be critical or not
*
* This function will set the key purpose OIDs of the Certificate.
* These are stored in the Extended Key Usage extension (2.5.29.37)
* See the GNUTLS_KP_* definitions for human readable names.
*
* Subsequent calls to this function will append OIDs to the OID list.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned,
* otherwise a negative error code is returned.
**/
int
gnutls_x509_crt_set_key_purpose_oid(gnutls_x509_crt_t cert,
const void *oid, unsigned int critical)
{
int ret;
gnutls_datum_t old_id = {NULL,0};
gnutls_datum_t der = {NULL,0};
gnutls_x509_key_purposes_t p = NULL;
if (cert == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
ret = gnutls_x509_key_purpose_init(&p);
if (ret < 0)
return gnutls_assert_val(ret);
/* Check if the extension already exists.
*/
ret =
_gnutls_x509_crt_get_extension(cert, "2.5.29.37", 0, &old_id,
NULL);
if (ret >= 0) {
ret = gnutls_x509_ext_import_key_purposes(&old_id, p, 0);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
}
ret = gnutls_x509_key_purpose_set(p, oid);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
ret = gnutls_x509_ext_export_key_purposes(p, &der);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
ret = _gnutls_x509_crt_set_extension(cert, "2.5.29.37",
&der, critical);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
ret = 0;
cleanup:
_gnutls_free_datum(&der);
_gnutls_free_datum(&old_id);
if (p != NULL)
gnutls_x509_key_purpose_deinit(p);
return ret;
}
/**
* gnutls_x509_crt_privkey_sign:
* @crt: a certificate of type #gnutls_x509_crt_t
* @issuer: is the certificate of the certificate issuer
* @issuer_key: holds the issuer's private key
* @dig: The message digest to use, %GNUTLS_DIG_SHA256 is a safe choice
* @flags: must be 0
*
* This function will sign the certificate with the issuer's private key, and
* will copy the issuer's information into the certificate.
*
* This must be the last step in a certificate generation since all
* the previously set parameters are now signed.
*
* A known limitation of this function is, that a newly-signed certificate will not
* be fully functional (e.g., for signature verification), until it
* is exported an re-imported.
*
* After GnuTLS 3.6.1 the value of @dig may be %GNUTLS_DIG_UNKNOWN,
* and in that case, a suitable but reasonable for the key algorithm will be selected.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crt_privkey_sign(gnutls_x509_crt_t crt,
gnutls_x509_crt_t issuer,
gnutls_privkey_t issuer_key,
gnutls_digest_algorithm_t dig,
unsigned int flags)
{
int result;
if (crt == NULL || issuer == NULL || issuer_key == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
if (dig == 0) {
result = gnutls_x509_crt_get_preferred_hash_algorithm(issuer, &dig, NULL);
if (result < 0)
return gnutls_assert_val(result);
}
MODIFIED(crt);
/* disable all the unneeded OPTIONAL fields.
*/
disable_optional_stuff(crt);
result = _gnutls_check_cert_sanity(crt);
if (result < 0) {
gnutls_assert();
return result;
}
result = _gnutls_x509_pkix_sign(crt->cert, "tbsCertificate",
dig, flags, issuer, issuer_key);
if (result < 0) {
gnutls_assert();
return result;
}
return 0;
}
/**
* gnutls_x509_crt_set_authority_info_access:
* @crt: Holds the certificate
* @what: what data to get, a #gnutls_info_access_what_t type.
* @data: output data to be freed with gnutls_free().
*
* This function sets the Authority Information Access (AIA)
* extension, see RFC 5280 section 4.2.2.1 for more information.
*
* The type of data stored in @data is specified via @what which
* should be #gnutls_info_access_what_t values.
*
* If @what is %GNUTLS_IA_OCSP_URI, @data will hold the OCSP URI.
* If @what is %GNUTLS_IA_CAISSUERS_URI, @data will hold the caIssuers
* URI.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
*
* Since: 3.0
**/
int
gnutls_x509_crt_set_authority_info_access(gnutls_x509_crt_t crt,
int what, gnutls_datum_t * data)
{
int ret;
gnutls_datum_t der = { NULL, 0 };
gnutls_datum_t new_der = { NULL, 0 };
gnutls_x509_aia_t aia_ctx = NULL;
const char *oid;
unsigned int c;
if (crt == NULL)
return gnutls_assert_val(GNUTLS_E_INVALID_REQUEST);
ret = gnutls_x509_aia_init(&aia_ctx);
if (ret < 0) {
gnutls_assert();
return ret;
}
ret = _gnutls_x509_crt_get_extension(crt, GNUTLS_OID_AIA, 0, &der,
&c);
if (ret >= 0) { /* decode it */
ret = gnutls_x509_ext_import_aia(&der, aia_ctx, 0);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
}
if (what == GNUTLS_IA_OCSP_URI)
oid = GNUTLS_OID_AD_OCSP;
else if (what == GNUTLS_IA_CAISSUERS_URI)
oid = GNUTLS_OID_AD_CAISSUERS;
else
return gnutls_assert_val(GNUTLS_E_INVALID_REQUEST);
ret = gnutls_x509_aia_set(aia_ctx, oid, GNUTLS_SAN_URI, data);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
ret = gnutls_x509_ext_export_aia(aia_ctx, &new_der);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
ret = _gnutls_x509_crt_set_extension(crt, GNUTLS_OID_AIA,
&new_der, 0);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
cleanup:
if (aia_ctx != NULL)
gnutls_x509_aia_deinit(aia_ctx);
_gnutls_free_datum(&new_der);
_gnutls_free_datum(&der);
return ret;
}
/**
* gnutls_x509_crt_set_policy:
* @crt: should contain a #gnutls_x509_crt_t type
* @policy: A pointer to a policy
* @critical: use non-zero if the extension is marked as critical
*
* This function will set the certificate policy extension (2.5.29.32).
* Multiple calls to this function append a new policy.
*
* Note the maximum text size for the qualifier %GNUTLS_X509_QUALIFIER_NOTICE
* is 200 characters. This function will fail with %GNUTLS_E_INVALID_REQUEST
* if this is exceeded.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
*
* Since: 3.1.5
**/
int
gnutls_x509_crt_set_policy(gnutls_x509_crt_t crt,
const struct gnutls_x509_policy_st *policy,
unsigned int critical)
{
int ret;
gnutls_datum_t der_data = {NULL, 0}, prev_der_data = { NULL, 0 };
gnutls_x509_policies_t policies = NULL;
if (crt == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
ret = gnutls_x509_policies_init(&policies);
if (ret < 0) {
gnutls_assert();
return ret;
}
ret = _gnutls_x509_crt_get_extension(crt, "2.5.29.32", 0,
&prev_der_data, NULL);
if (ret < 0 && ret != GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE) {
gnutls_assert();
goto cleanup;
}
if (ret != GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE) {
ret = gnutls_x509_ext_import_policies(&prev_der_data,
policies, 0);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
}
ret = gnutls_x509_policies_set(policies, policy);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
ret = gnutls_x509_ext_export_policies(policies, &der_data);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
ret = _gnutls_x509_crt_set_extension(crt, "2.5.29.32",
&der_data, 0);
cleanup:
if (policies != NULL)
gnutls_x509_policies_deinit(policies);
_gnutls_free_datum(&prev_der_data);
_gnutls_free_datum(&der_data);
return ret;
}
/**
* gnutls_x509_crt_set_spki:
* @crt: a certificate of type #gnutls_x509_crt_t
* @spki: a SubjectPublicKeyInfo structure of type #gnutls_x509_spki_t
* @flags: must be zero
*
* This function will set the certificate's subject public key
* information explicitly. This is intended to be used in the cases
* where a single public key (e.g., RSA) can be used for multiple
* signature algorithms (RSA PKCS1-1.5, and RSA-PSS).
*
* To export the public key (i.e., the SubjectPublicKeyInfo part), check
* gnutls_pubkey_import_x509().
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
* negative error value.
*
* Since: 3.6.0
**/
int
gnutls_x509_crt_set_spki(gnutls_x509_crt_t crt,
const gnutls_x509_spki_t spki,
unsigned int flags)
{
int ret;
gnutls_pk_algorithm_t crt_pk;
gnutls_x509_spki_st tpki;
gnutls_pk_params_st params;
unsigned bits;
if (crt == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
ret = _gnutls_x509_crt_get_mpis(crt, ¶ms);
if (ret < 0) {
gnutls_assert();
return ret;
}
bits = pubkey_to_bits(¶ms);
crt_pk = params.algo;
if (!_gnutls_pk_are_compat(crt_pk, spki->pk)) {
ret = gnutls_assert_val(GNUTLS_E_INVALID_REQUEST);
goto cleanup;
}
if (spki->pk != GNUTLS_PK_RSA_PSS) {
if (crt_pk == spki->pk) {
ret = 0;
goto cleanup;
}
gnutls_assert();
ret = GNUTLS_E_INVALID_REQUEST;
goto cleanup;
}
memset(&tpki, 0, sizeof(gnutls_x509_spki_st));
if (crt_pk == GNUTLS_PK_RSA) {
const mac_entry_st *me;
me = hash_to_entry(spki->rsa_pss_dig);
if (unlikely(me == NULL)) {
gnutls_assert();
ret = GNUTLS_E_INVALID_REQUEST;
goto cleanup;
}
tpki.pk = spki->pk;
tpki.rsa_pss_dig = spki->rsa_pss_dig;
/* If salt size is zero, find the optimal salt size. */
if (spki->salt_size == 0) {
ret = _gnutls_find_rsa_pss_salt_size(bits, me,
spki->salt_size);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
tpki.salt_size = ret;
} else
tpki.salt_size = spki->salt_size;
} else if (crt_pk == GNUTLS_PK_RSA_PSS) {
ret = _gnutls_x509_crt_read_spki_params(crt, &tpki);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
tpki.salt_size = spki->salt_size;
tpki.rsa_pss_dig = spki->rsa_pss_dig;
}
memcpy(¶ms.spki, &tpki, sizeof(tpki));
ret = _gnutls_x509_check_pubkey_params(¶ms);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
MODIFIED(crt);
ret = _gnutls_x509_write_spki_params(crt->cert,
"tbsCertificate."
"subjectPublicKeyInfo.algorithm",
&tpki);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
ret = 0;
cleanup:
gnutls_pk_params_release(¶ms);
return ret;
}