| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /** |
| * 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 com.sun.org.apache.xml.internal.security.keys.content; |
| |
| import java.security.KeyFactory; |
| import java.security.NoSuchAlgorithmException; |
| import java.security.PublicKey; |
| import java.security.spec.InvalidKeySpecException; |
| import java.security.spec.X509EncodedKeySpec; |
| |
| 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.Signature11ElementProxy; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Provides content model support for the <code>dsig11:DEREncodedKeyvalue</code> element. |
| * |
| * @author Brent Putman (putmanb@georgetown.edu) |
| */ |
| public class DEREncodedKeyValue extends Signature11ElementProxy implements KeyInfoContent { |
| |
| /** JCA algorithm key types supported by this implementation. */ |
| private static final String supportedKeyTypes[] = { "RSA", "DSA", "EC"}; |
| |
| /** |
| * Constructor DEREncodedKeyValue |
| * |
| * @param element |
| * @param BaseURI |
| * @throws XMLSecurityException |
| */ |
| public DEREncodedKeyValue(Element element, String BaseURI) throws XMLSecurityException { |
| super(element, BaseURI); |
| } |
| |
| /** |
| * Constructor DEREncodedKeyValue |
| * |
| * @param doc |
| * @param publicKey |
| * @throws XMLSecurityException |
| */ |
| public DEREncodedKeyValue(Document doc, PublicKey publicKey) throws XMLSecurityException { |
| super(doc); |
| |
| this.addBase64Text(getEncodedDER(publicKey)); |
| } |
| |
| /** |
| * Constructor DEREncodedKeyValue |
| * |
| * @param doc |
| * @param base64EncodedKey |
| */ |
| public DEREncodedKeyValue(Document doc, byte[] encodedKey) { |
| super(doc); |
| |
| this.addBase64Text(encodedKey); |
| } |
| |
| /** |
| * Sets the <code>Id</code> attribute |
| * |
| * @param Id ID |
| */ |
| public void setId(String id) { |
| if (id != null) { |
| this.constructionElement.setAttributeNS(null, Constants._ATT_ID, id); |
| this.constructionElement.setIdAttributeNS(null, Constants._ATT_ID, true); |
| } else { |
| this.constructionElement.removeAttributeNS(null, Constants._ATT_ID); |
| } |
| } |
| |
| /** |
| * Returns the <code>Id</code> attribute |
| * |
| * @return the <code>Id</code> attribute |
| */ |
| public String getId() { |
| return this.constructionElement.getAttributeNS(null, Constants._ATT_ID); |
| } |
| |
| /** @inheritDoc */ |
| public String getBaseLocalName() { |
| return Constants._TAG_DERENCODEDKEYVALUE; |
| } |
| |
| /** |
| * Method getPublicKey |
| * |
| * @return the public key |
| * @throws XMLSecurityException |
| */ |
| public PublicKey getPublicKey() throws XMLSecurityException { |
| byte[] encodedKey = getBytesFromTextChild(); |
| |
| // Iterate over the supported key types until one produces a public key. |
| for (String keyType : supportedKeyTypes) { |
| try { |
| KeyFactory keyFactory = KeyFactory.getInstance(keyType); |
| X509EncodedKeySpec keySpec = new X509EncodedKeySpec(encodedKey); |
| PublicKey publicKey = keyFactory.generatePublic(keySpec); |
| if (publicKey != null) { |
| return publicKey; |
| } |
| } catch (NoSuchAlgorithmException e) { |
| // Do nothing, try the next type |
| } catch (InvalidKeySpecException e) { |
| // Do nothing, try the next type |
| } |
| } |
| throw new XMLSecurityException("DEREncodedKeyValue.UnsupportedEncodedKey"); |
| } |
| |
| /** |
| * Method getEncodedDER |
| * |
| * @return the public key |
| * @throws XMLSecurityException |
| */ |
| protected byte[] getEncodedDER(PublicKey publicKey) throws XMLSecurityException { |
| try { |
| KeyFactory keyFactory = KeyFactory.getInstance(publicKey.getAlgorithm()); |
| X509EncodedKeySpec keySpec = keyFactory.getKeySpec(publicKey, X509EncodedKeySpec.class); |
| return keySpec.getEncoded(); |
| } catch (NoSuchAlgorithmException e) { |
| Object exArgs[] = { publicKey.getAlgorithm(), publicKey.getFormat(), publicKey.getClass().getName() }; |
| throw new XMLSecurityException("DEREncodedKeyValue.UnsupportedPublicKey", exArgs, e); |
| } catch (InvalidKeySpecException e) { |
| Object exArgs[] = { publicKey.getAlgorithm(), publicKey.getFormat(), publicKey.getClass().getName() }; |
| throw new XMLSecurityException("DEREncodedKeyValue.UnsupportedPublicKey", exArgs, e); |
| } |
| } |
| |
| } |