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<?php |
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declare(strict_types = 1); |
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namespace X509\AttributeCertificate; |
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use ASN1\Element; |
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use ASN1\Type\Constructed\Sequence; |
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use ASN1\Type\Primitive\BitString; |
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use ASN1\Type\Primitive\Enumerated; |
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use ASN1\Type\Primitive\ObjectIdentifier; |
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use Sop\CryptoTypes\AlgorithmIdentifier\AlgorithmIdentifier; |
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use Sop\CryptoTypes\AlgorithmIdentifier\Feature\AlgorithmIdentifierType; |
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/** |
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* Implements <i>ObjectDigestInfo</i> ASN.1 type. |
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* |
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* @link https://tools.ietf.org/html/rfc5755#section-4.1 |
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* @link https://tools.ietf.org/html/rfc5755#section-7.3 |
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*/ |
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class ObjectDigestInfo |
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{ |
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const TYPE_PUBLIC_KEY = 0; |
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const TYPE_PUBLIC_KEY_CERT = 1; |
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const TYPE_OTHER_OBJECT_TYPES = 2; |
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/** |
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* Object type. |
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* |
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* @var int $_digestedObjectType |
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*/ |
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protected $_digestedObjectType; |
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/** |
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* OID of other object type. |
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* |
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* @var string|null $_otherObjectTypeID |
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*/ |
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protected $_otherObjectTypeID; |
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/** |
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* Digest algorithm. |
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* |
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* @var AlgorithmIdentifierType $_digestAlgorithm |
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*/ |
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protected $_digestAlgorithm; |
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/** |
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* Object digest. |
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* |
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* @var BitString $_objectDigest |
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*/ |
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protected $_objectDigest; |
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/** |
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* Constructor. |
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* |
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* @param int $type |
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* @param AlgorithmIdentifierType $algo |
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* @param BitString $digest |
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*/ |
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public function __construct(int $type, AlgorithmIdentifierType $algo, |
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BitString $digest) |
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{ |
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$this->_digestedObjectType = $type; |
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$this->_otherObjectTypeID = null; |
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$this->_digestAlgorithm = $algo; |
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$this->_objectDigest = $digest; |
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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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* @return self |
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*/ |
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public static function fromASN1(Sequence $seq): ObjectDigestInfo |
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{ |
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4 |
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$type = $seq->at(0) |
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->asEnumerated() |
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->intNumber(); |
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$oid = null; |
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4 |
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$idx = 1; |
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if ($seq->has($idx, Element::TYPE_OBJECT_IDENTIFIER)) { |
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1 |
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$oid = $seq->at($idx++) |
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1 |
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->asObjectIdentifier() |
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1 |
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->oid(); |
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} |
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$algo = AlgorithmIdentifier::fromASN1($seq->at($idx++)->asSequence()); |
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$digest = $seq->at($idx)->asBitString(); |
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$obj = new self($type, $algo, $digest); |
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$obj->_otherObjectTypeID = $oid; |
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return $obj; |
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} |
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/** |
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* Generate ASN.1 structure. |
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* |
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* @return Sequence |
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*/ |
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public function toASN1(): Sequence |
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{ |
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$elements = array(new Enumerated($this->_digestedObjectType)); |
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if (isset($this->_otherObjectTypeID)) { |
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$elements[] = new ObjectIdentifier($this->_otherObjectTypeID); |
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} |
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$elements[] = $this->_digestAlgorithm->toASN1(); |
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$elements[] = $this->_objectDigest; |
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return new Sequence(...$elements); |
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} |
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} |
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et-nik /
x509
