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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\UnspecifiedType; |
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use X501\ASN1\Name; |
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use X509\Certificate\Certificate; |
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use X509\GeneralName\DirectoryName; |
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use X509\GeneralName\GeneralNames; |
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/** |
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* Base class implementing <i>AttCertIssuer</i> ASN.1 CHOICE type. |
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* |
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* @link https://tools.ietf.org/html/rfc5755#section-4.1 |
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*/ |
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abstract class AttCertIssuer |
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{ |
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/** |
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* Generate ASN.1 element. |
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* |
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* @return Element |
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*/ |
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abstract public function toASN1(); |
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/** |
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* Check whether AttCertIssuer identifies given certificate. |
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* |
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* @param Certificate $cert |
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* @return bool |
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*/ |
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abstract public function identifiesPKC(Certificate $cert): bool; |
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/** |
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* Initialize from distinguished name. |
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* |
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* This conforms to RFC 5755 which states that only v2Form must be used, |
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* and issuerName must contain exactly one GeneralName of DirectoryName |
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* type. |
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* |
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* @link https://tools.ietf.org/html/rfc5755#section-4.2.3 |
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* @param Name $name |
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* @return self |
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*/ |
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public static function fromName(Name $name) |
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{ |
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return new V2Form(new GeneralNames(new DirectoryName($name))); |
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} |
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/** |
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* Initialize from an issuer's public key certificate. |
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* |
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* @param Certificate $cert |
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* @return self |
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*/ |
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public static function fromPKC(Certificate $cert) |
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{ |
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return self::fromName($cert->tbsCertificate()->subject()); |
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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 UnspecifiedType $el CHOICE |
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* @throws \UnexpectedValueException |
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* @return self |
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*/ |
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public static function fromASN1(UnspecifiedType $el) |
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{ |
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if (!$el->isTagged()) { |
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throw new \UnexpectedValueException("v1Form issuer not supported."); |
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} |
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$tagged = $el->asTagged(); |
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switch ($tagged->tag()) { |
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case 0: |
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return V2Form::fromV2ASN1( |
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$tagged->asImplicit(Element::TYPE_SEQUENCE)->asSequence()); |
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} |
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throw new \UnexpectedValueException("Unsupported issuer type."); |
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} |
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} |
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sop /
x509
