| 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 { |
| |
| /** {@link org.apache.commons.logging} logging facility */ |
| 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; |
| } |
| |
| |
| |
| } |