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package org.bouncycastle.asn1.x509;
import java.math.BigInteger;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERTaggedObject;
/**
* PKIX RFC 5280
* <pre>
* id-ce-policyConstraints OBJECT IDENTIFIER ::= { id-ce 36 }
*
* PolicyConstraints ::= SEQUENCE {
* requireExplicitPolicy [0] SkipCerts OPTIONAL,
* inhibitPolicyMapping [1] SkipCerts OPTIONAL }
*
* SkipCerts ::= INTEGER (0..MAX)
* </pre>
*/
public class PolicyConstraints
extends ASN1Object
{
private BigInteger requireExplicitPolicyMapping;
private BigInteger inhibitPolicyMapping;
public PolicyConstraints(BigInteger requireExplicitPolicyMapping, BigInteger inhibitPolicyMapping)
{
this.requireExplicitPolicyMapping = requireExplicitPolicyMapping;
this.inhibitPolicyMapping = inhibitPolicyMapping;
}
private PolicyConstraints(ASN1Sequence seq)
{
for (int i = 0; i != seq.size(); i++)
{
ASN1TaggedObject to = ASN1TaggedObject.getInstance(seq.getObjectAt(i));
if (to.getTagNo() == 0)
{
requireExplicitPolicyMapping = ASN1Integer.getInstance(to, false).getValue();
}
else if (to.getTagNo() == 1)
{
inhibitPolicyMapping = ASN1Integer.getInstance(to, false).getValue();
}
else
{
throw new IllegalArgumentException("Unknown tag encountered.");
}
}
}
public static PolicyConstraints getInstance(
Object obj)
{
if (obj instanceof PolicyConstraints)
{
return (PolicyConstraints)obj;
}
if (obj != null)
{
return new PolicyConstraints(ASN1Sequence.getInstance(obj));
}
return null;
}
public static PolicyConstraints fromExtensions(Extensions extensions)
{
return PolicyConstraints.getInstance(extensions.getExtensionParsedValue(Extension.policyConstraints));
}
public BigInteger getRequireExplicitPolicyMapping()
{
return requireExplicitPolicyMapping;
}
public BigInteger getInhibitPolicyMapping()
{
return inhibitPolicyMapping;
}
public ASN1Primitive toASN1Primitive()
{
ASN1EncodableVector v = new ASN1EncodableVector();
if (requireExplicitPolicyMapping != null)
{
v.add(new DERTaggedObject(0, new ASN1Integer(requireExplicitPolicyMapping)));
}
if (inhibitPolicyMapping != null)
{
v.add(new DERTaggedObject(1, new ASN1Integer(inhibitPolicyMapping)));
}
return new DERSequence(v);
}
}
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