/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.geronimo.crypto.asn1.x509;
import java.math.BigInteger;
import java.util.Enumeration;
import org.apache.geronimo.crypto.asn1.ASN1Encodable;
import org.apache.geronimo.crypto.asn1.ASN1EncodableVector;
import org.apache.geronimo.crypto.asn1.ASN1Sequence;
import org.apache.geronimo.crypto.asn1.ASN1TaggedObject;
import org.apache.geronimo.crypto.asn1.DERInteger;
import org.apache.geronimo.crypto.asn1.DERObject;
import org.apache.geronimo.crypto.asn1.DERSequence;
public class DSAParameter
extends ASN1Encodable
{
DERInteger p, q, g;
public static DSAParameter getInstance(
ASN1TaggedObject obj,
boolean explicit)
{
return getInstance(ASN1Sequence.getInstance(obj, explicit));
}
public static DSAParameter getInstance(
Object obj)
{
if(obj == null || obj instanceof DSAParameter)
{
return (DSAParameter)obj;
}
if(obj instanceof ASN1Sequence)
{
return new DSAParameter((ASN1Sequence)obj);
}
throw new IllegalArgumentException("Invalid DSAParameter: " + obj.getClass().getName());
}
public DSAParameter(
BigInteger p,
BigInteger q,
BigInteger g)
{
this.p = new DERInteger(p);
this.q = new DERInteger(q);
this.g = new DERInteger(g);
}
public DSAParameter(
ASN1Sequence seq)
{
Enumeration e = seq.getObjects();
p = (DERInteger)e.nextElement();
q = (DERInteger)e.nextElement();
g = (DERInteger)e.nextElement();
}
public BigInteger getP()
{
return p.getPositiveValue();
}
public BigInteger getQ()
{
return q.getPositiveValue();
}
public BigInteger getG()
{
return g.getPositiveValue();
}
public DERObject toASN1Object()
{
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(p);
v.add(q);
v.add(g);
return new DERSequence(v);
}
}