/**
* 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 RSAPublicKeyStructure
extends ASN1Encodable
{
private BigInteger modulus;
private BigInteger publicExponent;
public static RSAPublicKeyStructure getInstance(
ASN1TaggedObject obj,
boolean explicit)
{
return getInstance(ASN1Sequence.getInstance(obj, explicit));
}
public static RSAPublicKeyStructure getInstance(
Object obj)
{
if(obj == null || obj instanceof RSAPublicKeyStructure)
{
return (RSAPublicKeyStructure)obj;
}
if(obj instanceof ASN1Sequence)
{
return new RSAPublicKeyStructure((ASN1Sequence)obj);
}
throw new IllegalArgumentException("Invalid RSAPublicKeyStructure: " + obj.getClass().getName());
}
public RSAPublicKeyStructure(
BigInteger modulus,
BigInteger publicExponent)
{
this.modulus = modulus;
this.publicExponent = publicExponent;
}
public RSAPublicKeyStructure(
ASN1Sequence seq)
{
Enumeration e = seq.getObjects();
modulus = ((DERInteger)e.nextElement()).getPositiveValue();
publicExponent = ((DERInteger)e.nextElement()).getPositiveValue();
}
public BigInteger getModulus()
{
return modulus;
}
public BigInteger getPublicExponent()
{
return publicExponent;
}
/**
* This outputs the key in PKCS1v2 format.
* <pre>
* RSAPublicKey ::= SEQUENCE {
* modulus INTEGER, -- n
* publicExponent INTEGER, -- e
* }
* </pre>
* <p>
*/
public DERObject toASN1Object()
{
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(new DERInteger(getModulus()));
v.add(new DERInteger(getPublicExponent()));
return new DERSequence(v);
}
}