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/*
 * Copyright  1999-2004 The Apache Software Foundation.
 *
 *  Licensed 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
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 *  distributed under the License is distributed on an "AS IS" BASIS,
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 *  See the License for the specific language governing permissions and
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package com.sun.org.apache.xml.internal.security.keys.content.keyvalues;

import java.math.BigInteger;
import java.security.Key;
import java.security.KeyFactory;
import java.security.NoSuchAlgorithmException;
import java.security.PublicKey;
import java.security.interfaces.DSAPublicKey;
import java.security.spec.DSAPublicKeySpec;
import java.security.spec.InvalidKeySpecException;

import com.sun.org.apache.xml.internal.security.exceptions.XMLSecurityException;
import com.sun.org.apache.xml.internal.security.utils.Constants;
import com.sun.org.apache.xml.internal.security.utils.I18n;
import com.sun.org.apache.xml.internal.security.utils.SignatureElementProxy;
import com.sun.org.apache.xml.internal.security.utils.XMLUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;

Author:$Author: mullan $
/** * * @author $Author: mullan $ */
public class DSAKeyValue extends SignatureElementProxy implements KeyValueContent {
Constructor DSAKeyValue
Params:
  • element –
  • BaseURI –
Throws:
/** * Constructor DSAKeyValue * * @param element * @param BaseURI * @throws XMLSecurityException */
public DSAKeyValue(Element element, String BaseURI) throws XMLSecurityException { super(element, BaseURI); }
Constructor DSAKeyValue
Params:
  • doc –
  • P –
  • Q –
  • G –
  • Y –
/** * Constructor DSAKeyValue * * @param doc * @param P * @param Q * @param G * @param Y */
public DSAKeyValue(Document doc, BigInteger P, BigInteger Q, BigInteger G, BigInteger Y) { super(doc); XMLUtils.addReturnToElement(this._constructionElement); this.addBigIntegerElement(P, Constants._TAG_P); this.addBigIntegerElement(Q, Constants._TAG_Q); this.addBigIntegerElement(G, Constants._TAG_G); this.addBigIntegerElement(Y, Constants._TAG_Y); }
Constructor DSAKeyValue
Params:
  • doc –
  • key –
Throws:
/** * Constructor DSAKeyValue * * @param doc * @param key * @throws IllegalArgumentException */
public DSAKeyValue(Document doc, Key key) throws IllegalArgumentException { super(doc); XMLUtils.addReturnToElement(this._constructionElement); if (key instanceof java.security.interfaces.DSAPublicKey) { this.addBigIntegerElement(((DSAPublicKey) key).getParams().getP(), Constants._TAG_P); this.addBigIntegerElement(((DSAPublicKey) key).getParams().getQ(), Constants._TAG_Q); this.addBigIntegerElement(((DSAPublicKey) key).getParams().getG(), Constants._TAG_G); this.addBigIntegerElement(((DSAPublicKey) key).getY(), Constants._TAG_Y); } else { Object exArgs[] = { Constants._TAG_DSAKEYVALUE, key.getClass().getName() }; throw new IllegalArgumentException(I18n .translate("KeyValue.IllegalArgument", exArgs)); } }
@inheritDoc
/** @inheritDoc */
public PublicKey getPublicKey() throws XMLSecurityException { try { DSAPublicKeySpec pkspec = new DSAPublicKeySpec(this .getBigIntegerFromChildElement(Constants._TAG_Y, Constants .SignatureSpecNS), this .getBigIntegerFromChildElement(Constants._TAG_P, Constants .SignatureSpecNS), this .getBigIntegerFromChildElement(Constants._TAG_Q, Constants .SignatureSpecNS), this .getBigIntegerFromChildElement(Constants ._TAG_G, Constants.SignatureSpecNS)); KeyFactory dsaFactory = KeyFactory.getInstance("DSA"); PublicKey pk = dsaFactory.generatePublic(pkspec); return pk; } catch (NoSuchAlgorithmException ex) { throw new XMLSecurityException("empty", ex); } catch (InvalidKeySpecException ex) { throw new XMLSecurityException("empty", ex); } }
@inheritDoc
/** @inheritDoc */
public String getBaseLocalName() { return Constants._TAG_DSAKEYVALUE; } }