| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /* |
| * 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 |
| * |
| * 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 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 $ |
| */ |
| public class DSAKeyValue extends SignatureElementProxy |
| implements KeyValueContent { |
| |
| /** |
| * Constructor DSAKeyValue |
| * |
| * @param element |
| * @param BaseURI |
| * @throws XMLSecurityException |
| */ |
| public DSAKeyValue(Element element, String BaseURI) |
| throws XMLSecurityException { |
| super(element, BaseURI); |
| } |
| |
| /** |
| * 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 |
| * |
| * @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 */ |
| 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 */ |
| public String getBaseLocalName() { |
| return Constants._TAG_DSAKEYVALUE; |
| } |
| } |