/**
* 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.keys.keyresolver.implementations;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.cert.X509Certificate;
import javax.crypto.SecretKey;
import org.apache.xml.security.exceptions.XMLSecurityException;
import org.apache.xml.security.keys.content.DEREncodedKeyValue;
import org.apache.xml.security.keys.keyresolver.KeyResolverException;
import org.apache.xml.security.keys.keyresolver.KeyResolverSpi;
import org.apache.xml.security.keys.storage.StorageResolver;
import org.apache.xml.security.utils.Constants;
import org.apache.xml.security.utils.XMLUtils;
import org.w3c.dom.Element;
/**
* KeyResolverSpi implementation which resolves public keys from a
* <code>dsig11:DEREncodedKeyValue</code> element.
*
* @author Brent Putman (putmanb@georgetown.edu)
*/
public class DEREncodedKeyValueResolver extends KeyResolverSpi {
private static org.slf4j.Logger log =
org.slf4j.LoggerFactory.getLogger(DEREncodedKeyValueResolver.class);
/** {@inheritDoc}. */
public boolean engineCanResolve(Element element, String baseURI, StorageResolver storage) {
return XMLUtils.elementIsInSignature11Space(element, Constants._TAG_DERENCODEDKEYVALUE);
}
/** {@inheritDoc}. */
public PublicKey engineLookupAndResolvePublicKey(Element element, String baseURI, StorageResolver storage)
throws KeyResolverException {
if (log.isDebugEnabled()) {
log.debug("Can I resolve " + element.getTagName());
}
if (!engineCanResolve(element, baseURI, storage)) {
return null;
}
try {
DEREncodedKeyValue derKeyValue = new DEREncodedKeyValue(element, baseURI);
return derKeyValue.getPublicKey();
} catch (XMLSecurityException e) {
if (log.isDebugEnabled()) {
log.debug("XMLSecurityException", e);
}
}
return null;
}
/** {@inheritDoc}. */
public X509Certificate engineLookupResolveX509Certificate(Element element, String baseURI, StorageResolver storage)
throws KeyResolverException {
return null;
}
/** {@inheritDoc}. */
public SecretKey engineLookupAndResolveSecretKey(Element element, String baseURI, StorageResolver storage)
throws KeyResolverException {
return null;
}
/** {@inheritDoc}. */
public PrivateKey engineLookupAndResolvePrivateKey(Element element, String baseURI, StorageResolver storage)
throws KeyResolverException {
return null;
}
}