/**
* 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.xml.security.stax.impl.securityToken;
import org.apache.xml.security.binding.xmldsig.DSAKeyValueType;
import org.apache.xml.security.exceptions.XMLSecurityException;
import org.apache.xml.security.stax.ext.InboundSecurityContext;
import org.apache.xml.security.stax.impl.util.IDGenerator;
import org.apache.xml.security.stax.securityToken.SecurityTokenConstants;
import java.math.BigInteger;
import java.security.KeyFactory;
import java.security.NoSuchAlgorithmException;
import java.security.PublicKey;
import java.security.spec.DSAPublicKeySpec;
import java.security.spec.InvalidKeySpecException;
/**
* @author $Author: coheigea $
* @version $Revision: 1354898 $ $Date: 2012-06-28 11:19:02 +0100 (Thu, 28 Jun 2012) $
*/
public class DsaKeyValueSecurityToken extends AbstractInboundSecurityToken {
private DSAKeyValueType dsaKeyValueType;
public DsaKeyValueSecurityToken(DSAKeyValueType dsaKeyValueType, InboundSecurityContext inboundSecurityContext) {
super(inboundSecurityContext, IDGenerator.generateID(null), SecurityTokenConstants.KeyIdentifier_KeyValue, true);
this.dsaKeyValueType = dsaKeyValueType;
}
private PublicKey buildPublicKey(DSAKeyValueType dsaKeyValueType) throws InvalidKeySpecException, NoSuchAlgorithmException {
DSAPublicKeySpec dsaPublicKeySpec = new DSAPublicKeySpec(
new BigInteger(1, dsaKeyValueType.getY()),
new BigInteger(1, dsaKeyValueType.getP()),
new BigInteger(1, dsaKeyValueType.getQ()),
new BigInteger(1, dsaKeyValueType.getG()));
KeyFactory keyFactory = KeyFactory.getInstance("DSA");
return keyFactory.generatePublic(dsaPublicKeySpec);
}
@Override
public PublicKey getPublicKey() throws XMLSecurityException {
if (super.getPublicKey() == null) {
try {
setPublicKey(buildPublicKey(this.dsaKeyValueType));
} catch (InvalidKeySpecException e) {
throw new XMLSecurityException(e);
} catch (NoSuchAlgorithmException e) {
throw new XMLSecurityException(e);
}
}
return super.getPublicKey();
}
@Override
public boolean isAsymmetric() {
return true;
}
@Override
public SecurityTokenConstants.TokenType getTokenType() {
return SecurityTokenConstants.KeyValueToken;
}
}