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<?php |
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namespace X509\CertificationPath; |
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use CryptoUtil\Crypto\Crypto; |
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use X509\Certificate\Certificate; |
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use X509\Certificate\CertificateBundle; |
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use X509\Certificate\CertificateChain; |
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use X509\CertificationPath\Exception\PathValidationException; |
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use X509\CertificationPath\PathBuilding\CertificationPathBuilder; |
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use X509\CertificationPath\PathValidation\PathValidationConfig; |
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use X509\CertificationPath\PathValidation\PathValidationResult; |
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use X509\CertificationPath\PathValidation\PathValidator; |
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/** |
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* Implements certification path structure. |
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* |
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* Certification path is a list of certificates from the trust anchor to |
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* the end entity certificate, possibly spanning over multiple intermediate |
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* certificates. |
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* |
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* @link https://tools.ietf.org/html/rfc5280#section-3.2 |
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*/ |
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class CertificationPath implements \Countable, \IteratorAggregate |
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{ |
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/** |
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* Certification path. |
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* |
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* @var Certificate[] $_certificates |
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*/ |
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protected $_certificates; |
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/** |
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* Constructor. |
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* |
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* @param Certificate ...$certificates Certificates from the trust anchor |
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* to the target end-entity certificate |
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*/ |
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public function __construct(Certificate ...$certificates) { |
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$this->_certificates = $certificates; |
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} |
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/** |
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* Initialize from a certificate chain. |
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* |
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* @param CertificateChain $chain |
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* @return self |
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*/ |
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public static function fromCertificateChain(CertificateChain $chain) { |
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return new self(...array_reverse($chain->certificates(), false)); |
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} |
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/** |
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* Build certification path to given target. |
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* |
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* @param Certificate $target Target end-entity certificate |
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* @param CertificateBundle $trust_anchors List of trust anchors |
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* @param CertificateBundle|null $intermediate Optional intermediate |
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* certificates |
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* @return self |
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*/ |
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public static function toTarget(Certificate $target, |
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CertificateBundle $trust_anchors, |
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CertificateBundle $intermediate = null) { |
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$builder = new CertificationPathBuilder($trust_anchors); |
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return $builder->shortestPathToTarget($target, $intermediate); |
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} |
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/** |
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* Build certification path from given trust anchor to target certificate, |
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* using intermediate certificates from given bundle. |
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* |
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* @param Certificate $trust_anchor Trust anchor certificate |
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* @param Certificate $target Target end-entity certificate |
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* @param CertificateBundle|null $intermediate Optional intermediate |
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* certificates |
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* @return self |
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*/ |
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public static function fromTrustAnchorToTarget(Certificate $trust_anchor, |
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Certificate $target, CertificateBundle $intermediate = null) { |
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return self::toTarget($target, new CertificateBundle($trust_anchor), |
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$intermediate); |
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} |
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/** |
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* Get certificates. |
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* |
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* @return Certificate[] |
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*/ |
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public function certificates() { |
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return $this->_certificates; |
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} |
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/** |
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* Get the trust anchor certificate from the path. |
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* |
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* @throws \LogicException If path is empty |
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* @return Certificate |
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*/ |
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public function trustAnchorCertificate() { |
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if (!count($this->_certificates)) { |
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throw new \LogicException("No certificates."); |
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} |
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return $this->_certificates[0]; |
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} |
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/** |
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* Get the end-entity certificate from the path. |
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* |
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* @throws \LogicException If path is empty |
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* @return Certificate |
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*/ |
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public function endEntityCertificate() { |
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if (!count($this->_certificates)) { |
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throw new \LogicException("No certificates."); |
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} |
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return $this->_certificates[count($this->_certificates) - 1]; |
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} |
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/** |
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* Check whether certification path starts with one ore more given |
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* certificates in parameter order. |
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* |
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* @param Certificate ...$certs Certificates |
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* @return true |
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*/ |
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public function startsWith(Certificate ...$certs) { |
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$n = count($certs); |
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if ($n > count($this->_certificates)) { |
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return false; |
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} |
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for ($i = 0; $i < $n; ++$i) { |
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if (!$certs[$i]->equals($this->_certificates[$i])) { |
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return false; |
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} |
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} |
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return true; |
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} |
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/** |
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* Validate certification path. |
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* |
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* @param Crypto $crypto |
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* @param PathValidationConfig $config |
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* @throws PathValidationException |
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* @return PathValidationResult |
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*/ |
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public function validate(Crypto $crypto, PathValidationConfig $config) { |
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$validator = new PathValidator($crypto, $config, ...$this->_certificates); |
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return $validator->validate(); |
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} |
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/** |
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* |
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* @see Countable::count() |
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* @return int |
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*/ |
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public function count() { |
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return count($this->_certificates); |
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} |
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/** |
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* Get iterator for certificates. |
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* |
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* @see IteratorAggregate::getIterator() |
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* @return \ArrayIterator |
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*/ |
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public function getIterator() { |
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return new \ArrayIterator($this->_certificates); |
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} |
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} |
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sop /
x509
