/
X509.php
3811 lines (3380 loc) · 136 KB
/
X509.php
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<?php
/**
* Pure-PHP X.509 Parser
*
* PHP version 5
*
* Encode and decode X.509 certificates.
*
* The extensions are from {@link http://tools.ietf.org/html/rfc5280 RFC5280} and
* {@link http://web.archive.org/web/19961027104704/http://www3.netscape.com/eng/security/cert-exts.html Netscape Certificate Extensions}.
*
* Note that loading an X.509 certificate and resaving it may invalidate the signature. The reason being that the signature is based on a
* portion of the certificate that contains optional parameters with default values. ie. if the parameter isn't there the default value is
* used. Problem is, if the parameter is there and it just so happens to have the default value there are two ways that that parameter can
* be encoded. It can be encoded explicitly or left out all together. This would effect the signature value and thus may invalidate the
* the certificate all together unless the certificate is re-signed.
*
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2012 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
declare(strict_types=1);
namespace phpseclib3\File;
use phpseclib3\Common\Functions\Strings;
use phpseclib3\Crypt\Common\PrivateKey;
use phpseclib3\Crypt\Common\PublicKey;
use phpseclib3\Crypt\DSA;
use phpseclib3\Crypt\EC;
use phpseclib3\Crypt\Hash;
use phpseclib3\Crypt\PublicKeyLoader;
use phpseclib3\Crypt\Random;
use phpseclib3\Crypt\RSA;
use phpseclib3\Crypt\RSA\Formats\Keys\PSS;
use phpseclib3\Exception\RuntimeException;
use phpseclib3\Exception\UnsupportedAlgorithmException;
use phpseclib3\File\ASN1\Element;
use phpseclib3\File\ASN1\Maps;
use phpseclib3\Math\BigInteger;
/**
* Pure-PHP X.509 Parser
*
* @author Jim Wigginton <terrafrost@php.net>
*/
class X509
{
/**
* Flag to only accept signatures signed by certificate authorities
*
* Not really used anymore but retained all the same to suppress E_NOTICEs from old installs
*/
public const VALIDATE_SIGNATURE_BY_CA = 1;
/**
* Return internal array representation
*
* @see \phpseclib3\File\X509::getDN()
*/
public const DN_ARRAY = 0;
/**
* Return string
*
* @see \phpseclib3\File\X509::getDN()
*/
public const DN_STRING = 1;
/**
* Return ASN.1 name string
*
* @see \phpseclib3\File\X509::getDN()
*/
public const DN_ASN1 = 2;
/**
* Return OpenSSL compatible array
*
* @see \phpseclib3\File\X509::getDN()
*/
public const DN_OPENSSL = 3;
/**
* Return canonical ASN.1 RDNs string
*
* @see \phpseclib3\File\X509::getDN()
*/
public const DN_CANON = 4;
/**
* Return name hash for file indexing
*
* @see \phpseclib3\File\X509::getDN()
*/
public const DN_HASH = 5;
/**
* Save as PEM
*
* ie. a base64-encoded PEM with a header and a footer
*
* @see \phpseclib3\File\X509::saveX509()
* @see \phpseclib3\File\X509::saveCSR()
* @see \phpseclib3\File\X509::saveCRL()
*/
public const FORMAT_PEM = 0;
/**
* Save as DER
*
* @see \phpseclib3\File\X509::saveX509()
* @see \phpseclib3\File\X509::saveCSR()
* @see \phpseclib3\File\X509::saveCRL()
*/
public const FORMAT_DER = 1;
/**
* Save as a SPKAC
*
* @see \phpseclib3\File\X509::saveX509()
* @see \phpseclib3\File\X509::saveCSR()
* @see \phpseclib3\File\X509::saveCRL()
*
* Only works on CSRs. Not currently supported.
*/
public const FORMAT_SPKAC = 2;
/**
* Auto-detect the format
*
* Used only by the load*() functions
*
* @see \phpseclib3\File\X509::saveX509()
* @see \phpseclib3\File\X509::saveCSR()
* @see \phpseclib3\File\X509::saveCRL()
*/
public const FORMAT_AUTO_DETECT = 3;
/**
* Attribute value disposition.
* If disposition is >= 0, this is the index of the target value.
*/
public const ATTR_ALL = -1; // All attribute values (array).
public const ATTR_APPEND = -2; // Add a value.
public const ATTR_REPLACE = -3; // Clear first, then add a value.
/**
* Distinguished Name
*
* @var array
*/
private $dn;
/**
* Public key
*
* @var string|PublicKey
*/
private $publicKey;
/**
* Private key
*
* @var string|PrivateKey
*/
private $privateKey;
/**
* The certificate authorities
*
* @var array
*/
private $CAs = [];
/**
* The currently loaded certificate
*
* @var array
*/
private $currentCert;
/**
* The signature subject
*
* There's no guarantee \phpseclib3\File\X509 is going to re-encode an X.509 cert in the same way it was originally
* encoded so we take save the portion of the original cert that the signature would have made for.
*
* @var string
*/
private $signatureSubject;
/**
* Certificate Start Date
*
* @var string
*/
private $startDate;
/**
* Certificate End Date
*
* @var string|Element
*/
private $endDate;
/**
* Serial Number
*
* @var string
*/
private $serialNumber;
/**
* Key Identifier
*
* See {@link http://tools.ietf.org/html/rfc5280#section-4.2.1.1 RFC5280#section-4.2.1.1} and
* {@link http://tools.ietf.org/html/rfc5280#section-4.2.1.2 RFC5280#section-4.2.1.2}.
*
* @var string
*/
private $currentKeyIdentifier;
/**
* CA Flag
*
* @var bool
*/
private $caFlag = false;
/**
* SPKAC Challenge
*
* @var string
*/
private $challenge;
/**
* @var array
*/
private $extensionValues = [];
/**
* OIDs loaded
*
* @var bool
*/
private static $oidsLoaded = false;
/**
* Recursion Limit
*
* @var int
*/
private static $recur_limit = 5;
/**
* URL fetch flag
*
* @var bool
*/
private static $disable_url_fetch = false;
/**
* @var array
*/
private static $extensions = [];
/**
* @var ?array
*/
private $ipAddresses = null;
/**
* @var ?array
*/
private $domains = null;
public function __construct()
{
// Explicitly Tagged Module, 1988 Syntax
// http://tools.ietf.org/html/rfc5280#appendix-A.1
if (!self::$oidsLoaded) {
// OIDs from RFC5280 and those RFCs mentioned in RFC5280#section-4.1.1.2
ASN1::loadOIDs([
//'id-pkix' => '1.3.6.1.5.5.7',
//'id-pe' => '1.3.6.1.5.5.7.1',
//'id-qt' => '1.3.6.1.5.5.7.2',
//'id-kp' => '1.3.6.1.5.5.7.3',
//'id-ad' => '1.3.6.1.5.5.7.48',
'id-qt-cps' => '1.3.6.1.5.5.7.2.1',
'id-qt-unotice' => '1.3.6.1.5.5.7.2.2',
'id-ad-ocsp' => '1.3.6.1.5.5.7.48.1',
'id-ad-caIssuers' => '1.3.6.1.5.5.7.48.2',
'id-ad-timeStamping' => '1.3.6.1.5.5.7.48.3',
'id-ad-caRepository' => '1.3.6.1.5.5.7.48.5',
//'id-at' => '2.5.4',
'id-at-name' => '2.5.4.41',
'id-at-surname' => '2.5.4.4',
'id-at-givenName' => '2.5.4.42',
'id-at-initials' => '2.5.4.43',
'id-at-generationQualifier' => '2.5.4.44',
'id-at-commonName' => '2.5.4.3',
'id-at-localityName' => '2.5.4.7',
'id-at-stateOrProvinceName' => '2.5.4.8',
'id-at-organizationName' => '2.5.4.10',
'id-at-organizationalUnitName' => '2.5.4.11',
'id-at-title' => '2.5.4.12',
'id-at-description' => '2.5.4.13',
'id-at-dnQualifier' => '2.5.4.46',
'id-at-countryName' => '2.5.4.6',
'id-at-serialNumber' => '2.5.4.5',
'id-at-pseudonym' => '2.5.4.65',
'id-at-postalCode' => '2.5.4.17',
'id-at-streetAddress' => '2.5.4.9',
'id-at-uniqueIdentifier' => '2.5.4.45',
'id-at-role' => '2.5.4.72',
'id-at-postalAddress' => '2.5.4.16',
'jurisdictionOfIncorporationCountryName' => '1.3.6.1.4.1.311.60.2.1.3',
'jurisdictionOfIncorporationStateOrProvinceName' => '1.3.6.1.4.1.311.60.2.1.2',
'jurisdictionLocalityName' => '1.3.6.1.4.1.311.60.2.1.1',
'id-at-businessCategory' => '2.5.4.15',
//'id-domainComponent' => '0.9.2342.19200300.100.1.25',
//'pkcs-9' => '1.2.840.113549.1.9',
'pkcs-9-at-emailAddress' => '1.2.840.113549.1.9.1',
//'id-ce' => '2.5.29',
'id-ce-authorityKeyIdentifier' => '2.5.29.35',
'id-ce-subjectKeyIdentifier' => '2.5.29.14',
'id-ce-keyUsage' => '2.5.29.15',
'id-ce-privateKeyUsagePeriod' => '2.5.29.16',
'id-ce-certificatePolicies' => '2.5.29.32',
//'anyPolicy' => '2.5.29.32.0',
'id-ce-policyMappings' => '2.5.29.33',
'id-ce-subjectAltName' => '2.5.29.17',
'id-ce-issuerAltName' => '2.5.29.18',
'id-ce-subjectDirectoryAttributes' => '2.5.29.9',
'id-ce-basicConstraints' => '2.5.29.19',
'id-ce-nameConstraints' => '2.5.29.30',
'id-ce-policyConstraints' => '2.5.29.36',
'id-ce-cRLDistributionPoints' => '2.5.29.31',
'id-ce-extKeyUsage' => '2.5.29.37',
//'anyExtendedKeyUsage' => '2.5.29.37.0',
'id-kp-serverAuth' => '1.3.6.1.5.5.7.3.1',
'id-kp-clientAuth' => '1.3.6.1.5.5.7.3.2',
'id-kp-codeSigning' => '1.3.6.1.5.5.7.3.3',
'id-kp-emailProtection' => '1.3.6.1.5.5.7.3.4',
'id-kp-timeStamping' => '1.3.6.1.5.5.7.3.8',
'id-kp-OCSPSigning' => '1.3.6.1.5.5.7.3.9',
'id-ce-inhibitAnyPolicy' => '2.5.29.54',
'id-ce-freshestCRL' => '2.5.29.46',
'id-pe-authorityInfoAccess' => '1.3.6.1.5.5.7.1.1',
'id-pe-subjectInfoAccess' => '1.3.6.1.5.5.7.1.11',
'id-ce-cRLNumber' => '2.5.29.20',
'id-ce-issuingDistributionPoint' => '2.5.29.28',
'id-ce-deltaCRLIndicator' => '2.5.29.27',
'id-ce-cRLReasons' => '2.5.29.21',
'id-ce-certificateIssuer' => '2.5.29.29',
'id-ce-holdInstructionCode' => '2.5.29.23',
//'holdInstruction' => '1.2.840.10040.2',
'id-holdinstruction-none' => '1.2.840.10040.2.1',
'id-holdinstruction-callissuer' => '1.2.840.10040.2.2',
'id-holdinstruction-reject' => '1.2.840.10040.2.3',
'id-ce-invalidityDate' => '2.5.29.24',
'rsaEncryption' => '1.2.840.113549.1.1.1',
'md2WithRSAEncryption' => '1.2.840.113549.1.1.2',
'md5WithRSAEncryption' => '1.2.840.113549.1.1.4',
'sha1WithRSAEncryption' => '1.2.840.113549.1.1.5',
'sha224WithRSAEncryption' => '1.2.840.113549.1.1.14',
'sha256WithRSAEncryption' => '1.2.840.113549.1.1.11',
'sha384WithRSAEncryption' => '1.2.840.113549.1.1.12',
'sha512WithRSAEncryption' => '1.2.840.113549.1.1.13',
'id-ecPublicKey' => '1.2.840.10045.2.1',
'ecdsa-with-SHA1' => '1.2.840.10045.4.1',
// from https://tools.ietf.org/html/rfc5758#section-3.2
'ecdsa-with-SHA224' => '1.2.840.10045.4.3.1',
'ecdsa-with-SHA256' => '1.2.840.10045.4.3.2',
'ecdsa-with-SHA384' => '1.2.840.10045.4.3.3',
'ecdsa-with-SHA512' => '1.2.840.10045.4.3.4',
'id-dsa' => '1.2.840.10040.4.1',
'id-dsa-with-sha1' => '1.2.840.10040.4.3',
// from https://tools.ietf.org/html/rfc5758#section-3.1
'id-dsa-with-sha224' => '2.16.840.1.101.3.4.3.1',
'id-dsa-with-sha256' => '2.16.840.1.101.3.4.3.2',
// from https://tools.ietf.org/html/rfc8410:
'id-Ed25519' => '1.3.101.112',
'id-Ed448' => '1.3.101.113',
'id-RSASSA-PSS' => '1.2.840.113549.1.1.10',
//'id-sha224' => '2.16.840.1.101.3.4.2.4',
//'id-sha256' => '2.16.840.1.101.3.4.2.1',
//'id-sha384' => '2.16.840.1.101.3.4.2.2',
//'id-sha512' => '2.16.840.1.101.3.4.2.3',
//'id-GostR3411-94-with-GostR3410-94' => '1.2.643.2.2.4',
//'id-GostR3411-94-with-GostR3410-2001' => '1.2.643.2.2.3',
//'id-GostR3410-2001' => '1.2.643.2.2.20',
//'id-GostR3410-94' => '1.2.643.2.2.19',
// Netscape Object Identifiers from "Netscape Certificate Extensions"
'netscape' => '2.16.840.1.113730',
'netscape-cert-extension' => '2.16.840.1.113730.1',
'netscape-cert-type' => '2.16.840.1.113730.1.1',
'netscape-comment' => '2.16.840.1.113730.1.13',
'netscape-ca-policy-url' => '2.16.840.1.113730.1.8',
// the following are X.509 extensions not supported by phpseclib
'id-pe-logotype' => '1.3.6.1.5.5.7.1.12',
'entrustVersInfo' => '1.2.840.113533.7.65.0',
'verisignPrivate' => '2.16.840.1.113733.1.6.9',
// for Certificate Signing Requests
// see http://tools.ietf.org/html/rfc2985
'pkcs-9-at-unstructuredName' => '1.2.840.113549.1.9.2', // PKCS #9 unstructured name
'pkcs-9-at-challengePassword' => '1.2.840.113549.1.9.7', // Challenge password for certificate revocations
'pkcs-9-at-extensionRequest' => '1.2.840.113549.1.9.14', // Certificate extension request
]);
}
}
/**
* Load X.509 certificate
*
* Returns an associative array describing the X.509 cert or a false if the cert failed to load
*
* @param array|string $cert
*/
public function loadX509($cert, int $mode = self::FORMAT_AUTO_DETECT)
{
if (is_array($cert) && isset($cert['tbsCertificate'])) {
unset($this->currentCert);
unset($this->currentKeyIdentifier);
$this->dn = $cert['tbsCertificate']['subject'];
if (!isset($this->dn)) {
return false;
}
$this->currentCert = $cert;
$currentKeyIdentifier = $this->getExtension('id-ce-subjectKeyIdentifier');
$this->currentKeyIdentifier = is_string($currentKeyIdentifier) ? $currentKeyIdentifier : null;
unset($this->signatureSubject);
return $cert;
}
if ($mode != self::FORMAT_DER) {
$newcert = ASN1::extractBER($cert);
if ($mode == self::FORMAT_PEM && $cert == $newcert) {
return false;
}
$cert = $newcert;
}
if ($cert === false) {
$this->currentCert = false;
return false;
}
$decoded = ASN1::decodeBER($cert);
if ($decoded) {
$x509 = ASN1::asn1map($decoded[0], Maps\Certificate::MAP);
}
if (!isset($x509) || $x509 === false) {
$this->currentCert = false;
return false;
}
$this->signatureSubject = substr($cert, $decoded[0]['content'][0]['start'], $decoded[0]['content'][0]['length']);
if ($this->isSubArrayValid($x509, 'tbsCertificate/extensions')) {
$this->mapInExtensions($x509, 'tbsCertificate/extensions');
}
$this->mapInDNs($x509, 'tbsCertificate/issuer/rdnSequence');
$this->mapInDNs($x509, 'tbsCertificate/subject/rdnSequence');
$key = $x509['tbsCertificate']['subjectPublicKeyInfo'];
$key = ASN1::encodeDER($key, Maps\SubjectPublicKeyInfo::MAP);
$x509['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey'] =
"-----BEGIN PUBLIC KEY-----\r\n" .
chunk_split(base64_encode($key), 64) .
"-----END PUBLIC KEY-----";
$this->currentCert = $x509;
$this->dn = $x509['tbsCertificate']['subject'];
$currentKeyIdentifier = $this->getExtension('id-ce-subjectKeyIdentifier');
$this->currentKeyIdentifier = is_string($currentKeyIdentifier) ? $currentKeyIdentifier : null;
return $x509;
}
/**
* Save X.509 certificate
*
* @return string|false
*/
public function saveX509(array $cert, int $format = self::FORMAT_PEM)
{
if (!is_array($cert) || !isset($cert['tbsCertificate'])) {
return false;
}
switch (true) {
// "case !$a: case !$b: break; default: whatever();" is the same thing as "if ($a && $b) whatever()"
case !($algorithm = $this->subArray($cert, 'tbsCertificate/subjectPublicKeyInfo/algorithm/algorithm')):
case is_object($cert['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey']):
break;
default:
$cert['tbsCertificate']['subjectPublicKeyInfo'] = new Element(
base64_decode(preg_replace('#-.+-|[\r\n]#', '', $cert['tbsCertificate']['subjectPublicKeyInfo']['subjectPublicKey']))
);
}
if ($algorithm == 'rsaEncryption') {
$cert['signatureAlgorithm']['parameters'] = null;
$cert['tbsCertificate']['signature']['parameters'] = null;
}
$filters = [];
$type_utf8_string = ['type' => ASN1::TYPE_UTF8_STRING];
$filters['tbsCertificate']['signature']['parameters'] = $type_utf8_string;
$filters['tbsCertificate']['signature']['issuer']['rdnSequence']['value'] = $type_utf8_string;
$filters['tbsCertificate']['issuer']['rdnSequence']['value'] = $type_utf8_string;
$filters['tbsCertificate']['subject']['rdnSequence']['value'] = $type_utf8_string;
$filters['tbsCertificate']['subjectPublicKeyInfo']['algorithm']['parameters'] = $type_utf8_string;
$filters['signatureAlgorithm']['parameters'] = $type_utf8_string;
$filters['authorityCertIssuer']['directoryName']['rdnSequence']['value'] = $type_utf8_string;
//$filters['policyQualifiers']['qualifier'] = $type_utf8_string;
$filters['distributionPoint']['fullName']['directoryName']['rdnSequence']['value'] = $type_utf8_string;
$filters['directoryName']['rdnSequence']['value'] = $type_utf8_string;
foreach (self::$extensions as $extension) {
$filters['tbsCertificate']['extensions'][] = $extension;
}
/* in the case of policyQualifiers/qualifier, the type has to be \phpseclib3\File\ASN1::TYPE_IA5_STRING.
\phpseclib3\File\ASN1::TYPE_PRINTABLE_STRING will cause OpenSSL's X.509 parser to spit out random
characters.
*/
$filters['policyQualifiers']['qualifier']
= ['type' => ASN1::TYPE_IA5_STRING];
ASN1::setFilters($filters);
$this->mapOutExtensions($cert, 'tbsCertificate/extensions');
$this->mapOutDNs($cert, 'tbsCertificate/issuer/rdnSequence');
$this->mapOutDNs($cert, 'tbsCertificate/subject/rdnSequence');
$cert = ASN1::encodeDER($cert, Maps\Certificate::MAP);
switch ($format) {
case self::FORMAT_DER:
return $cert;
// case self::FORMAT_PEM:
default:
return "-----BEGIN CERTIFICATE-----\r\n" . chunk_split(Strings::base64_encode($cert), 64) . '-----END CERTIFICATE-----';
}
}
/**
* Map extension values from octet string to extension-specific internal
* format.
*/
private function mapInExtensions(array &$root, string $path): void
{
$extensions = &$this->subArrayUnchecked($root, $path);
if ($extensions) {
for ($i = 0; $i < count($extensions); $i++) {
$id = $extensions[$i]['extnId'];
$value = &$extensions[$i]['extnValue'];
/* [extnValue] contains the DER encoding of an ASN.1 value
corresponding to the extension type identified by extnID */
$map = $this->getMapping($id);
if (!is_bool($map)) {
$decoder = $id == 'id-ce-nameConstraints' ?
[static::class, 'decodeNameConstraintIP'] :
[static::class, 'decodeIP'];
$decoded = ASN1::decodeBER($value);
if (!$decoded) {
continue;
}
$mapped = ASN1::asn1map($decoded[0], $map, ['iPAddress' => $decoder]);
$value = $mapped === false ? $decoded[0] : $mapped;
if ($id == 'id-ce-certificatePolicies') {
for ($j = 0; $j < count($value); $j++) {
if (!isset($value[$j]['policyQualifiers'])) {
continue;
}
for ($k = 0; $k < count($value[$j]['policyQualifiers']); $k++) {
$subid = $value[$j]['policyQualifiers'][$k]['policyQualifierId'];
$map = $this->getMapping($subid);
$subvalue = &$value[$j]['policyQualifiers'][$k]['qualifier'];
if ($map !== false) {
$decoded = ASN1::decodeBER($subvalue);
if (!$decoded) {
continue;
}
$mapped = ASN1::asn1map($decoded[0], $map);
$subvalue = $mapped === false ? $decoded[0] : $mapped;
}
}
}
}
}
}
}
}
/**
* Map extension values from extension-specific internal format to
* octet string.
*/
private function mapOutExtensions(array &$root, string $path): void
{
$extensions = &$this->subArray($root, $path, !empty($this->extensionValues));
foreach ($this->extensionValues as $id => $data) {
extract($data);
$newext = [
'extnId' => $id,
'extnValue' => $value,
'critical' => $critical,
];
if ($replace) {
foreach ($extensions as $key => $value) {
if ($value['extnId'] == $id) {
$extensions[$key] = $newext;
continue 2;
}
}
}
$extensions[] = $newext;
}
if (is_array($extensions)) {
$size = count($extensions);
for ($i = 0; $i < $size; $i++) {
if ($extensions[$i] instanceof Element) {
continue;
}
$id = $extensions[$i]['extnId'];
$value = &$extensions[$i]['extnValue'];
switch ($id) {
case 'id-ce-certificatePolicies':
for ($j = 0; $j < count($value); $j++) {
if (!isset($value[$j]['policyQualifiers'])) {
continue;
}
for ($k = 0; $k < count($value[$j]['policyQualifiers']); $k++) {
$subid = $value[$j]['policyQualifiers'][$k]['policyQualifierId'];
$map = $this->getMapping($subid);
$subvalue = &$value[$j]['policyQualifiers'][$k]['qualifier'];
if ($map !== false) {
// by default \phpseclib3\File\ASN1 will try to render qualifier as a \phpseclib3\File\ASN1::TYPE_IA5_STRING since it's
// actual type is \phpseclib3\File\ASN1::TYPE_ANY
$subvalue = new Element(ASN1::encodeDER($subvalue, $map));
}
}
}
break;
case 'id-ce-authorityKeyIdentifier': // use 00 as the serial number instead of an empty string
if (isset($value['authorityCertSerialNumber'])) {
if ($value['authorityCertSerialNumber']->toBytes() == '') {
$temp = chr((ASN1::CLASS_CONTEXT_SPECIFIC << 6) | 2) . "\1\0";
$value['authorityCertSerialNumber'] = new Element($temp);
}
}
}
/* [extnValue] contains the DER encoding of an ASN.1 value
corresponding to the extension type identified by extnID */
$map = $this->getMapping($id);
if (is_bool($map)) {
if (!$map) {
//user_error($id . ' is not a currently supported extension');
unset($extensions[$i]);
}
} else {
$value = ASN1::encodeDER($value, $map, ['iPAddress' => [static::class, 'encodeIP']]);
}
}
}
}
/**
* Map attribute values from ANY type to attribute-specific internal
* format.
*
* @param array $root (by reference)
*/
private function mapInAttributes(array &$root, string $path): void
{
$attributes = &$this->subArray($root, $path);
if (is_array($attributes)) {
for ($i = 0; $i < count($attributes); $i++) {
$id = $attributes[$i]['type'];
/* $value contains the DER encoding of an ASN.1 value
corresponding to the attribute type identified by type */
$map = $this->getMapping($id);
if (is_array($attributes[$i]['value'])) {
$values = &$attributes[$i]['value'];
for ($j = 0; $j < count($values); $j++) {
$value = ASN1::encodeDER($values[$j], Maps\AttributeValue::MAP);
$decoded = ASN1::decodeBER($value);
if (!is_bool($map)) {
if (!$decoded) {
continue;
}
$mapped = ASN1::asn1map($decoded[0], $map);
if ($mapped !== false) {
$values[$j] = $mapped;
}
if ($id == 'pkcs-9-at-extensionRequest' && $this->isSubArrayValid($values, (string) $j)) {
$this->mapInExtensions($values, (string) $j);
}
} elseif ($map) {
$values[$j] = $value;
}
}
}
}
}
}
/**
* Map attribute values from attribute-specific internal format to
* ANY type.
*
* @param array $root (by reference)
*/
private function mapOutAttributes(array &$root, string $path): void
{
$attributes = &$this->subArray($root, $path);
if (is_array($attributes)) {
$size = count($attributes);
for ($i = 0; $i < $size; $i++) {
/* [value] contains the DER encoding of an ASN.1 value
corresponding to the attribute type identified by type */
$id = $attributes[$i]['type'];
$map = $this->getMapping($id);
if ($map === false) {
//user_error($id . ' is not a currently supported attribute', E_USER_NOTICE);
unset($attributes[$i]);
} elseif (is_array($attributes[$i]['value'])) {
$values = &$attributes[$i]['value'];
for ($j = 0; $j < count($values); $j++) {
switch ($id) {
case 'pkcs-9-at-extensionRequest':
$this->mapOutExtensions($values, $j);
break;
}
if (!is_bool($map)) {
$temp = ASN1::encodeDER($values[$j], $map);
$decoded = ASN1::decodeBER($temp);
if (!$decoded) {
continue;
}
$values[$j] = ASN1::asn1map($decoded[0], Maps\AttributeValue::MAP);
}
}
}
}
}
}
/**
* Map DN values from ANY type to DN-specific internal
* format.
*/
private function mapInDNs(array &$root, string $path): void
{
$dns = &$this->subArray($root, $path);
if (is_array($dns)) {
for ($i = 0; $i < count($dns); $i++) {
for ($j = 0; $j < count($dns[$i]); $j++) {
$type = $dns[$i][$j]['type'];
$value = &$dns[$i][$j]['value'];
if (is_object($value) && $value instanceof Element) {
$map = $this->getMapping($type);
if (!is_bool($map)) {
$decoded = ASN1::decodeBER($value);
if (!$decoded) {
continue;
}
$value = ASN1::asn1map($decoded[0], $map);
}
}
}
}
}
}
/**
* Map DN values from DN-specific internal format to
* ANY type.
*
* @param array $root (by reference)
*/
private function mapOutDNs(array &$root, string $path): void
{
$dns = &$this->subArray($root, $path);
if (is_array($dns)) {
$size = count($dns);
for ($i = 0; $i < $size; $i++) {
for ($j = 0; $j < count($dns[$i]); $j++) {
$type = $dns[$i][$j]['type'];
$value = &$dns[$i][$j]['value'];
if (is_object($value) && $value instanceof Element) {
continue;
}
$map = $this->getMapping($type);
if (!is_bool($map)) {
$value = new Element(ASN1::encodeDER($value, $map));
}
}
}
}
}
/**
* Associate an extension ID to an extension mapping
*/
private function getMapping(string $extnId)
{
if (!is_string($extnId)) { // eg. if it's a \phpseclib3\File\ASN1\Element object
return true;
}
if (isset(self::$extensions[$extnId])) {
return self::$extensions[$extnId];
}
switch ($extnId) {
case 'id-ce-keyUsage':
return Maps\KeyUsage::MAP;
case 'id-ce-basicConstraints':
return Maps\BasicConstraints::MAP;
case 'id-ce-subjectKeyIdentifier':
return Maps\KeyIdentifier::MAP;
case 'id-ce-cRLDistributionPoints':
return Maps\CRLDistributionPoints::MAP;
case 'id-ce-authorityKeyIdentifier':
return Maps\AuthorityKeyIdentifier::MAP;
case 'id-ce-certificatePolicies':
return Maps\CertificatePolicies::MAP;
case 'id-ce-extKeyUsage':
return Maps\ExtKeyUsageSyntax::MAP;
case 'id-pe-authorityInfoAccess':
return Maps\AuthorityInfoAccessSyntax::MAP;
case 'id-ce-subjectAltName':
return Maps\SubjectAltName::MAP;
case 'id-ce-subjectDirectoryAttributes':
return Maps\SubjectDirectoryAttributes::MAP;
case 'id-ce-privateKeyUsagePeriod':
return Maps\PrivateKeyUsagePeriod::MAP;
case 'id-ce-issuerAltName':
return Maps\IssuerAltName::MAP;
case 'id-ce-policyMappings':
return Maps\PolicyMappings::MAP;
case 'id-ce-nameConstraints':
return Maps\NameConstraints::MAP;
case 'netscape-cert-type':
return Maps\netscape_cert_type::MAP;
case 'netscape-comment':
return Maps\netscape_comment::MAP;
case 'netscape-ca-policy-url':
return Maps\netscape_ca_policy_url::MAP;
// since id-qt-cps isn't a constructed type it will have already been decoded as a string by the time it gets
// back around to asn1map() and we don't want it decoded again.
//case 'id-qt-cps':
// return Maps\CPSuri::MAP;
case 'id-qt-unotice':
return Maps\UserNotice::MAP;
// the following OIDs are unsupported but we don't want them to give notices when calling saveX509().
case 'id-pe-logotype': // http://www.ietf.org/rfc/rfc3709.txt
case 'entrustVersInfo':
// http://support.microsoft.com/kb/287547
case '1.3.6.1.4.1.311.20.2': // szOID_ENROLL_CERTTYPE_EXTENSION
case '1.3.6.1.4.1.311.21.1': // szOID_CERTSRV_CA_VERSION
// "SET Secure Electronic Transaction Specification"
// http://www.maithean.com/docs/set_bk3.pdf
case '2.23.42.7.0': // id-set-hashedRootKey
// "Certificate Transparency"
// https://tools.ietf.org/html/rfc6962
case '1.3.6.1.4.1.11129.2.4.2':
// "Qualified Certificate statements"
// https://tools.ietf.org/html/rfc3739#section-3.2.6
case '1.3.6.1.5.5.7.1.3':
return true;
// CSR attributes
case 'pkcs-9-at-unstructuredName':
return Maps\PKCS9String::MAP;
case 'pkcs-9-at-challengePassword':
return Maps\DirectoryString::MAP;
case 'pkcs-9-at-extensionRequest':
return Maps\Extensions::MAP;
// CRL extensions.
case 'id-ce-cRLNumber':
return Maps\CRLNumber::MAP;
case 'id-ce-deltaCRLIndicator':
return Maps\CRLNumber::MAP;
case 'id-ce-issuingDistributionPoint':
return Maps\IssuingDistributionPoint::MAP;
case 'id-ce-freshestCRL':
return Maps\CRLDistributionPoints::MAP;
case 'id-ce-cRLReasons':
return Maps\CRLReason::MAP;
case 'id-ce-invalidityDate':
return Maps\InvalidityDate::MAP;
case 'id-ce-certificateIssuer':
return Maps\CertificateIssuer::MAP;
case 'id-ce-holdInstructionCode':
return Maps\HoldInstructionCode::MAP;
case 'id-at-postalAddress':
return Maps\PostalAddress::MAP;
}
return false;
}
/**
* Load an X.509 certificate as a certificate authority
*/
public function loadCA(string $cert): bool
{
$olddn = $this->dn;
$oldcert = $this->currentCert;
$oldsigsubj = $this->signatureSubject;
$oldkeyid = $this->currentKeyIdentifier;
$cert = $this->loadX509($cert);
if (!$cert) {
$this->dn = $olddn;
$this->currentCert = $oldcert;
$this->signatureSubject = $oldsigsubj;
$this->currentKeyIdentifier = $oldkeyid;
return false;
}
/* From RFC5280 "PKIX Certificate and CRL Profile":
If the keyUsage extension is present, then the subject public key
MUST NOT be used to verify signatures on certificates or CRLs unless
the corresponding keyCertSign or cRLSign bit is set. */
//$keyUsage = $this->getExtension('id-ce-keyUsage');
//if ($keyUsage && !in_array('keyCertSign', $keyUsage)) {
// return false;
//}
/* From RFC5280 "PKIX Certificate and CRL Profile":
The cA boolean indicates whether the certified public key may be used
to verify certificate signatures. If the cA boolean is not asserted,
then the keyCertSign bit in the key usage extension MUST NOT be
asserted. If the basic constraints extension is not present in a
version 3 certificate, or the extension is present but the cA boolean
is not asserted, then the certified public key MUST NOT be used to
verify certificate signatures. */
//$basicConstraints = $this->getExtension('id-ce-basicConstraints');
//if (!$basicConstraints || !$basicConstraints['cA']) {
// return false;
//}
$this->CAs[] = $cert;
$this->dn = $olddn;
$this->currentCert = $oldcert;
$this->signatureSubject = $oldsigsubj;
return true;
}
/**
* Validate an X.509 certificate against a URL
*
* From RFC2818 "HTTP over TLS":
*
* Matching is performed using the matching rules specified by
* [RFC2459]. If more than one identity of a given type is present in
* the certificate (e.g., more than one dNSName name, a match in any one
* of the set is considered acceptable.) Names may contain the wildcard
* character * which is considered to match any single domain name
* component or component fragment. E.g., *.a.com matches foo.a.com but