package org.bouncycastle.asn1.x509;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Vector;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERSequence;
/**
* The extendedKeyUsage object.
* <pre>
* extendedKeyUsage ::= SEQUENCE SIZE (1..MAX) OF KeyPurposeId
* </pre>
*/
public class ExtendedKeyUsage
extends ASN1Encodable
{
Hashtable usageTable = new Hashtable();
ASN1Sequence seq;
public static ExtendedKeyUsage getInstance(
ASN1TaggedObject obj,
boolean explicit)
{
return getInstance(ASN1Sequence.getInstance(obj, explicit));
}
public static ExtendedKeyUsage getInstance(
Object obj)
{
if(obj == null || obj instanceof ExtendedKeyUsage)
{
return (ExtendedKeyUsage)obj;
}
if(obj instanceof ASN1Sequence)
{
return new ExtendedKeyUsage((ASN1Sequence)obj);
}
throw new IllegalArgumentException("Invalid ExtendedKeyUsage: " + obj.getClass().getName());
}
public ExtendedKeyUsage(
ASN1Sequence seq)
{
this.seq = seq;
Enumeration e = seq.getObjects();
while (e.hasMoreElements())
{
Object o = e.nextElement();
this.usageTable.put(o, o);
}
}
public ExtendedKeyUsage(
Vector usages)
{
ASN1EncodableVector v = new ASN1EncodableVector();
Enumeration e = usages.elements();
while (e.hasMoreElements())
{
DERObject o = (DERObject)e.nextElement();
v.add(o);
this.usageTable.put(o, o);
}
this.seq = new DERSequence(v);
}
public boolean hasKeyPurposeId(
KeyPurposeId keyPurposeId)
{
return (usageTable.get(keyPurposeId) != null);
}
public int size()
{
return usageTable.size();
}
public DERObject toASN1Object()
{
return seq;
}
}