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<?php |
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declare(strict_types = 1); |
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namespace Sop\X509\AttributeCertificate; |
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use Sop\ASN1\Element; |
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use Sop\ASN1\Type\Constructed\Sequence; |
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use Sop\ASN1\Type\Tagged\ImplicitlyTaggedType; |
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use Sop\X501\ASN1\Name; |
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use Sop\X509\Certificate\Certificate; |
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use Sop\X509\GeneralName\GeneralNames; |
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/** |
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* Implements *V2Form* ASN.1 type used as a attribute certificate issuer. |
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* |
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* @see https://tools.ietf.org/html/rfc5755#section-4.1 |
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*/ |
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class V2Form extends AttCertIssuer |
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{ |
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/** |
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* Issuer name. |
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* |
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* @var null|GeneralNames |
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*/ |
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protected $_issuerName; |
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/** |
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* Issuer PKC's issuer and serial. |
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* |
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* @var IssuerSerial |
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*/ |
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protected $_baseCertificateID; |
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/** |
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* Linked object. |
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* |
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* @var ObjectDigestInfo |
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*/ |
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protected $_objectDigestInfo; |
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/** |
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* Constructor. |
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* |
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* @param null|GeneralNames $names |
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*/ |
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public function __construct(?GeneralNames $names = null) |
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{ |
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$this->_issuerName = $names; |
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$this->_baseCertificateID = null; |
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$this->_objectDigestInfo = null; |
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} |
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/** |
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* Initialize from ASN.1. |
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* |
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* @param Sequence $seq |
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* |
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* @return self |
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*/ |
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public static function fromV2ASN1(Sequence $seq): self |
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{ |
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$issuer = null; |
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$cert_id = null; |
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$digest_info = null; |
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if ($seq->has(0, Element::TYPE_SEQUENCE)) { |
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$issuer = GeneralNames::fromASN1($seq->at(0)->asSequence()); |
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} |
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if ($seq->hasTagged(0)) { |
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$cert_id = IssuerSerial::fromASN1( |
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$seq->getTagged(0)->asImplicit(Element::TYPE_SEQUENCE) |
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->asSequence()); |
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} |
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if ($seq->hasTagged(1)) { |
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$digest_info = ObjectDigestInfo::fromASN1( |
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$seq->getTagged(1)->asImplicit(Element::TYPE_SEQUENCE) |
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->asSequence()); |
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} |
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$obj = new self($issuer); |
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$obj->_baseCertificateID = $cert_id; |
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$obj->_objectDigestInfo = $digest_info; |
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return $obj; |
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} |
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/** |
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* Check whether issuer name is set. |
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* |
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* @return bool |
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*/ |
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public function hasIssuerName(): bool |
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{ |
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return isset($this->_issuerName); |
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} |
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/** |
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* Get issuer name. |
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* |
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* @throws \LogicException If not set |
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* |
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* @return GeneralNames |
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*/ |
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public function issuerName(): GeneralNames |
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{ |
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if (!$this->hasIssuerName()) { |
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throw new \LogicException('issuerName not set.'); |
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} |
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return $this->_issuerName; |
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} |
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/** |
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* Get DN of the issuer. |
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* |
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* This is a convenience method conforming to RFC 5755, which states |
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* that Issuer must contain only one non-empty distinguished name. |
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* |
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* @return Name |
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*/ |
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public function name(): Name |
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{ |
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return $this->issuerName()->firstDN(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function toASN1(): Element |
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{ |
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$elements = []; |
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if (isset($this->_issuerName)) { |
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$elements[] = $this->_issuerName->toASN1(); |
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} |
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if (isset($this->_baseCertificateID)) { |
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$elements[] = new ImplicitlyTaggedType(0, |
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$this->_baseCertificateID->toASN1()); |
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} |
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if (isset($this->_objectDigestInfo)) { |
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$elements[] = new ImplicitlyTaggedType(1, |
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$this->_objectDigestInfo->toASN1()); |
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} |
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return new ImplicitlyTaggedType(0, new Sequence(...$elements)); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function identifiesPKC(Certificate $cert): bool |
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{ |
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$name = $this->_issuerName->firstDN(); |
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if (!$cert->tbsCertificate()->subject()->equals($name)) { |
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return false; |
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} |
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return true; |
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} |
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} |
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sop /
x509
