HashDataInput

git-svn-id: https://joinup.ec.europa.eu/svn/mocca/trunk@20 8a26b1a7-26f0-462f-b9ef-d0e30c41f5a4

4 files changed, 1251 insertions, 1174 deletions

diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/HashDataInputImpl.java b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/HashDataInputImpl.java
new file mode 100644
index 00000000..49d3c63f
--- /dev/null
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/HashDataInputImpl.java
@@ -0,0 +1,42 @@
+/*
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package at.gv.egiz.bku.slcommands.impl;
+
+import at.gv.egiz.bku.slcommands.impl.xsect.DataObject;
+import at.gv.egiz.stal.HashDataInput;
+import java.io.InputStream;
+
+/**
+ *
+ * @author clemens
+ */
+public class HashDataInputImpl implements HashDataInput {
+
+    String refId;
+    String mimeType;
+    InputStream hashDataInput;
+
+    public HashDataInputImpl(DataObject dataObject) {
+        refId = dataObject.getReference().getId();
+        mimeType = dataObject.getMimeType();  
+        hashDataInput = dataObject.getReference().getDigestInputStream();
+    }
+    
+    @Override
+    public String getReferenceId() {
+        return refId;
+    }
+
+    @Override
+    public String getMimeType() {
+        return mimeType;
+    }
+
+    @Override
+    public InputStream getHashDataInput() {
+        return hashDataInput;
+    }
+
+}
diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/xsect/STALPrivateKey.java b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/xsect/STALPrivateKey.java
index 64c758c9..25e2d4e5 100644
--- a/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/xsect/STALPrivateKey.java
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/xsect/STALPrivateKey.java
@@ -14,109 +14,115 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-package at.gv.egiz.bku.slcommands.impl.xsect;

-

-import java.security.PrivateKey;

-

-import at.gv.egiz.stal.STAL;

-import at.gv.egiz.stal.HashDataInputCallback;

-

-/**

- * This class implements a private key used by the {@link STALSignature} class. 

- * 

- * @author mcentner

- */

-public class STALPrivateKey implements PrivateKey {

-

-  private static final long serialVersionUID = 1L;

-

-  /**

-   * The STAL implementation.

-   */

-  private STAL stal;

-  

-  /**

-   * The callback interface for obtaining the hash input data.

-   */

-  private HashDataInputCallback hashDataInputCallback;

-  

-  /**

-   * The keybox identifier.

-   */

-  private String keyboxIdentifier;

-  

-  /**

-   * The signature algorithm.

-   */

-  private String algorithm;

-

-  /**

-   * Creates a new instance of this <code>STALPrivateKey</code> with the given

-   * <code>stal</code> implementation, signature <code>algorithm</code>,

-   * <code>keyboxIdentifier</code> and <code>hashDataInputCallback</code>

-   * interface.

-   * 

-   * @param stal

-   *          the STAL implementation

-   * @param algorithm

-   *          the signature algorithm

-   * @param keyboxIdentifier

-   *          the keybox identifier

-   * @param hashDataInputCallback

-   *          the interface for obtaining the has input data

-   */

-  public STALPrivateKey(STAL stal,

-      String algorithm, String keyboxIdentifier, HashDataInputCallback hashDataInputCallback) {

-    super();

-    this.keyboxIdentifier = keyboxIdentifier;

-    this.hashDataInputCallback = hashDataInputCallback;

-    this.stal = stal;

-    this.algorithm = algorithm;

-  }

-

-  /* (non-Javadoc)

-   * @see java.security.Key#getAlgorithm()

-   */

-  @Override

-  public String getAlgorithm() {

-    return algorithm;

-  }

-

-  /* (non-Javadoc)

-   * @see java.security.Key#getEncoded()

-   */

-  @Override

-  public byte[] getEncoded() {

-    throw new UnsupportedOperationException("STALPrivateKey does not support the getEncoded() method.");

-  }

-

-  /* (non-Javadoc)

-   * @see java.security.Key#getFormat()

-   */

-  @Override

-  public String getFormat() {

-    return null;

-  }

-

-  /**

-   * @return the STAL implementation

-   */

-  public STAL getStal() {

-    return stal;

-  }

-

-  /**

-   * @return the interface for obtaining the hash data input

-   */

-  public HashDataInputCallback getHashDataInputCallback() {

-    return hashDataInputCallback;

-  }

-

-  /**

-   * @return the keybox identifier

-   */

-  public String getKeyboxIdentifier() {

-    return keyboxIdentifier;

-  }

-  

-}

+package at.gv.egiz.bku.slcommands.impl.xsect;
+
+import at.gv.egiz.stal.HashDataInput;
+import java.security.PrivateKey;
+
+import at.gv.egiz.stal.STAL;
+//import at.gv.egiz.stal.HashDataInputCallback;
+import java.util.List;
+
+/**
+ * This class implements a private key used by the {@link STALSignature} class. 
+ * 
+ * @author mcentner
+ */
+public class STALPrivateKey implements PrivateKey {
+
+  private static final long serialVersionUID = 1L;
+
+  /**
+   * The STAL implementation.
+   */
+  private STAL stal;
+  
+  /**
+   * The callback interface for obtaining the hash input data.
+   */
+//  private HashDataInputCallback hashDataInputCallback;
+  
+
+  private List<DataObject> dataObjects;
+  
+  /**
+   * The keybox identifier.
+   */
+  private String keyboxIdentifier;
+  
+  /**
+   * The signature algorithm.
+   */
+  private String algorithm;
+
+  /**
+   * Creates a new instance of this <code>STALPrivateKey</code> with the given
+   * <code>stal</code> implementation, signature <code>algorithm</code>,
+   * <code>keyboxIdentifier</code> and <code>hashDataInputCallback</code>
+   * interface.
+   * 
+   * @param stal
+   *          the STAL implementation
+   * @param algorithm
+   *          the signature algorithm
+   * @param keyboxIdentifier
+   *          the keybox identifier
+   * @param hashDataInputCallback
+   *          the interface for obtaining the has input data
+   */
+  public STALPrivateKey(STAL stal,
+      String algorithm, String keyboxIdentifier, List<DataObject> dataObjects) {
+    super();
+    this.keyboxIdentifier = keyboxIdentifier;
+    this.dataObjects = dataObjects;
+    this.stal = stal;
+    this.algorithm = algorithm;
+  }
+
+  /* (non-Javadoc)
+   * @see java.security.Key#getAlgorithm()
+   */
+  @Override
+  public String getAlgorithm() {
+    return algorithm;
+  }
+
+  /* (non-Javadoc)
+   * @see java.security.Key#getEncoded()
+   */
+  @Override
+  public byte[] getEncoded() {
+    throw new UnsupportedOperationException("STALPrivateKey does not support the getEncoded() method.");
+  }
+
+  /* (non-Javadoc)
+   * @see java.security.Key#getFormat()
+   */
+  @Override
+  public String getFormat() {
+    return null;
+  }
+
+  /**
+   * @return the STAL implementation
+   */
+  public STAL getStal() {
+    return stal;
+  }
+
+  /**
+   * @return the interface for obtaining the hash data input
+   */
+  public List<DataObject> getDataObjects() {
+      
+    return dataObjects;
+  }
+
+  /**
+   * @return the keybox identifier
+   */
+  public String getKeyboxIdentifier() {
+    return keyboxIdentifier;
+  }
+  
+}
diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/xsect/STALSignature.java b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/xsect/STALSignature.java
index f0fcb891..eba1d96d 100644
--- a/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/xsect/STALSignature.java
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/xsect/STALSignature.java
@@ -14,152 +14,164 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-package at.gv.egiz.bku.slcommands.impl.xsect;

-

-import java.io.ByteArrayOutputStream;

-import java.security.InvalidKeyException;

-import java.security.InvalidParameterException;

-import java.security.PrivateKey;

-import java.security.PublicKey;

-import java.security.SignatureException;

-import java.security.SignatureSpi;

-import java.util.Collections;

-import java.util.List;

-

-import at.gv.egiz.stal.ErrorResponse;

-import at.gv.egiz.stal.STAL;

-import at.gv.egiz.stal.STALRequest;

-import at.gv.egiz.stal.STALResponse;

-import at.gv.egiz.stal.SignRequest;

-import at.gv.egiz.stal.SignResponse;

-import at.gv.egiz.stal.HashDataInputCallback;

-

-/**

- * A signature service provider implementation that uses STAL to sign.

- * 

- * @author mcentner

- */

-public class STALSignature extends SignatureSpi {

-

-  /**

-   * The private key.

-   */

-  protected STALPrivateKey privateKey;

-  

-  /**

-   * The to-be signed data.

-   */

-  protected ByteArrayOutputStream data = new ByteArrayOutputStream();

-  

-  /* (non-Javadoc)

-   * @see java.security.SignatureSpi#engineGetParameter(java.lang.String)

-   */

-  @Override

-  protected Object engineGetParameter(String param)

-      throws InvalidParameterException {

-    throw new InvalidParameterException();

-  }

-

-  /* (non-Javadoc)

-   * @see java.security.SignatureSpi#engineInitSign(java.security.PrivateKey)

-   */

-  @Override

-  protected void engineInitSign(PrivateKey privateKey)

-      throws InvalidKeyException {

-

-    if (!(privateKey instanceof STALPrivateKey)) {

-      throw new InvalidKeyException("STALSignature supports STALKeys only.");

-    }

-    

-    this.privateKey = (STALPrivateKey) privateKey;

-

-  }

-

-  /* (non-Javadoc)

-   * @see java.security.SignatureSpi#engineInitVerify(java.security.PublicKey)

-   */

-  @Override

-  protected void engineInitVerify(PublicKey publicKey)

-      throws InvalidKeyException {

-    

-    throw new UnsupportedOperationException("STALSignature does not support signature verification.");

-  }

-

-  /* (non-Javadoc)

-   * @see java.security.SignatureSpi#engineSetParameter(java.lang.String, java.lang.Object)

-   */

-  @Override

-  protected void engineSetParameter(String param, Object value)

-      throws InvalidParameterException {

-  }

-

-  /* (non-Javadoc)

-   * @see java.security.SignatureSpi#engineSign()

-   */

-  @Override

-  protected byte[] engineSign() throws SignatureException {

-   

-    STAL stal = privateKey.getStal();

-    

-    if (stal == null) {

-      throw new SignatureException("STALSignature requires the STALPrivateKey " +

-      		"to provide a STAL implementation reference.");

-    }

-    

-    HashDataInputCallback signRefDataSupplier = privateKey.getHashDataInputCallback();

-    

-    String keyboxIdentifier = privateKey.getKeyboxIdentifier();

-    

-    if (keyboxIdentifier == null) {

-      throw new SignatureException("STALSignature requires the STALPrivateKey " + 

-          "to provide a KeyboxIdentifier.");

-    }

-    

-    SignRequest signRequest = new SignRequest();

-    signRequest.setKeyIdentifier(keyboxIdentifier);

-    signRequest.setSignedInfo(data.toByteArray());

-    signRequest.setHashDataInput(signRefDataSupplier);

-    

-    List<STALResponse> responses = stal.handleRequest(Collections.singletonList((STALRequest) signRequest));

-    

-    if (responses == null || responses.size() != 1) {

-      throw new SignatureException("Failed to access STAL.");

-    }

-

-    STALResponse response = responses.get(0);

-    if (response instanceof SignResponse) {

-      return ((SignResponse) response).getSignatureValue();

-    } else if (response instanceof ErrorResponse) {

-      throw new STALSignatureException(((ErrorResponse) response).getErrorCode());

-    } else {

-      throw new SignatureException("Failed to access STAL.");

-    }

-

-  }

-

-  /* (non-Javadoc)

-   * @see java.security.SignatureSpi#engineUpdate(byte)

-   */

-  @Override

-  protected void engineUpdate(byte b) throws SignatureException {

-    data.write(b);

-  }

-

-  /* (non-Javadoc)

-   * @see java.security.SignatureSpi#engineUpdate(byte[], int, int)

-   */

-  @Override

-  protected void engineUpdate(byte[] b, int off, int len)

-      throws SignatureException {

-    data.write(b, off, len);

-  }

-

-  /* (non-Javadoc)

-   * @see java.security.SignatureSpi#engineVerify(byte[])

-   */

-  @Override

-  protected boolean engineVerify(byte[] sigBytes) throws SignatureException {

-    throw new UnsupportedOperationException("STALSignature des not support signature verification.");

-  }

-

-}

+package at.gv.egiz.bku.slcommands.impl.xsect;
+
+import at.gv.egiz.bku.slcommands.impl.HashDataInputImpl;
+import java.io.ByteArrayOutputStream;
+import java.security.InvalidKeyException;
+import java.security.InvalidParameterException;
+import java.security.PrivateKey;
+import java.security.PublicKey;
+import java.security.SignatureException;
+import java.security.SignatureSpi;
+import java.util.Collections;
+import java.util.List;
+
+import at.gv.egiz.stal.ErrorResponse;
+import at.gv.egiz.stal.HashDataInput;
+import at.gv.egiz.stal.STAL;
+import at.gv.egiz.stal.STALRequest;
+import at.gv.egiz.stal.STALResponse;
+import at.gv.egiz.stal.SignRequest;
+import at.gv.egiz.stal.SignResponse;
+//import at.gv.egiz.stal.HashDataInputCallback;
+import java.util.ArrayList;
+
+/**
+ * A signature service provider implementation that uses STAL to sign.
+ * 
+ * @author mcentner
+ */
+public class STALSignature extends SignatureSpi {
+
+//    private static final Log log = LogFactory.getLog(STALSignature.class);
+    
+  /**
+   * The private key.
+   */
+  protected STALPrivateKey privateKey;
+  
+  /**
+   * The to-be signed data.
+   */
+  protected ByteArrayOutputStream data = new ByteArrayOutputStream();
+  
+  /* (non-Javadoc)
+   * @see java.security.SignatureSpi#engineGetParameter(java.lang.String)
+   */
+  @Override
+  protected Object engineGetParameter(String param)
+      throws InvalidParameterException {
+    throw new InvalidParameterException();
+  }
+
+  /* (non-Javadoc)
+   * @see java.security.SignatureSpi#engineInitSign(java.security.PrivateKey)
+   */
+  @Override
+  protected void engineInitSign(PrivateKey privateKey)
+      throws InvalidKeyException {
+
+    if (!(privateKey instanceof STALPrivateKey)) {
+      throw new InvalidKeyException("STALSignature supports STALKeys only.");
+    }
+    
+    this.privateKey = (STALPrivateKey) privateKey;
+
+  }
+
+  /* (non-Javadoc)
+   * @see java.security.SignatureSpi#engineInitVerify(java.security.PublicKey)
+   */
+  @Override
+  protected void engineInitVerify(PublicKey publicKey)
+      throws InvalidKeyException {
+    
+    throw new UnsupportedOperationException("STALSignature does not support signature verification.");
+  }
+
+  /* (non-Javadoc)
+   * @see java.security.SignatureSpi#engineSetParameter(java.lang.String, java.lang.Object)
+   */
+  @Override
+  protected void engineSetParameter(String param, Object value)
+      throws InvalidParameterException {
+  }
+
+  /* (non-Javadoc)
+   * @see java.security.SignatureSpi#engineSign()
+   */
+  @Override
+  protected byte[] engineSign() throws SignatureException {
+   
+    STAL stal = privateKey.getStal();
+    
+    if (stal == null) {
+      throw new SignatureException("STALSignature requires the STALPrivateKey " +
+      		"to provide a STAL implementation reference.");
+    }
+    
+    String keyboxIdentifier = privateKey.getKeyboxIdentifier();
+    
+    if (keyboxIdentifier == null) {
+      throw new SignatureException("STALSignature requires the STALPrivateKey " + 
+          "to provide a KeyboxIdentifier.");
+    }
+    
+    // get hashDataInputs (DigestInputStreams) once slcommands.impl.xsect.Signature::sign() was called
+    List<DataObject> dataObjects = privateKey.getDataObjects();
+//    log.debug("got " + dataObjects.size() + " DataObjects, passing HashDataInputs to STAL SignRequest");
+    
+    List<HashDataInput> hashDataInputs = new ArrayList<HashDataInput>();
+      for (DataObject dataObject : dataObjects) {
+          hashDataInputs.add(new HashDataInputImpl(dataObject));
+      }
+    
+    SignRequest signRequest = new SignRequest();
+    signRequest.setKeyIdentifier(keyboxIdentifier);
+    signRequest.setSignedInfo(data.toByteArray());
+    signRequest.setHashDataInput(hashDataInputs);
+    
+    List<STALResponse> responses = stal.handleRequest(Collections.singletonList((STALRequest) signRequest));
+    
+    if (responses == null || responses.size() != 1) {
+      throw new SignatureException("Failed to access STAL.");
+    }
+
+    STALResponse response = responses.get(0);
+    if (response instanceof SignResponse) {
+      return ((SignResponse) response).getSignatureValue();
+    } else if (response instanceof ErrorResponse) {
+      throw new STALSignatureException(((ErrorResponse) response).getErrorCode());
+    } else {
+      throw new SignatureException("Failed to access STAL.");
+    }
+
+  }
+
+  /* (non-Javadoc)
+   * @see java.security.SignatureSpi#engineUpdate(byte)
+   */
+  @Override
+  protected void engineUpdate(byte b) throws SignatureException {
+    data.write(b);
+  }
+
+  /* (non-Javadoc)
+   * @see java.security.SignatureSpi#engineUpdate(byte[], int, int)
+   */
+  @Override
+  protected void engineUpdate(byte[] b, int off, int len)
+      throws SignatureException {
+    data.write(b, off, len);
+  }
+
+  /* (non-Javadoc)
+   * @see java.security.SignatureSpi#engineVerify(byte[])
+   */
+  @Override
+  protected boolean engineVerify(byte[] sigBytes) throws SignatureException {
+    throw new UnsupportedOperationException("STALSignature des not support signature verification.");
+  }
+
+}
diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/xsect/Signature.java b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/xsect/Signature.java
index 94a4a066..191f8371 100644
--- a/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/xsect/Signature.java
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/xsect/Signature.java
@@ -14,922 +14,939 @@
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-package at.gv.egiz.bku.slcommands.impl.xsect;

-

-import java.io.ByteArrayInputStream;

-import java.io.ByteArrayOutputStream;

-import java.io.IOException;

-import java.io.InputStream;

-import java.io.InputStreamReader;

-import java.io.StringWriter;

-import java.io.UnsupportedEncodingException;

-import java.security.InvalidAlgorithmParameterException;

-import java.security.NoSuchAlgorithmException;

-import java.security.PrivateKey;

-import java.security.cert.X509Certificate;

-import java.util.ArrayList;

-import java.util.Collections;

-import java.util.Date;

-import java.util.HashMap;

-import java.util.List;

-import java.util.Map;

-

-import javax.xml.bind.JAXBElement;

-import javax.xml.bind.JAXBException;

-import javax.xml.crypto.MarshalException;

-import javax.xml.crypto.dom.DOMStructure;

-import javax.xml.crypto.dsig.CanonicalizationMethod;

-import javax.xml.crypto.dsig.DigestMethod;

-import javax.xml.crypto.dsig.Reference;

-import javax.xml.crypto.dsig.SignatureMethod;

-import javax.xml.crypto.dsig.SignedInfo;

-import javax.xml.crypto.dsig.XMLObject;

-import javax.xml.crypto.dsig.XMLSignature;

-import javax.xml.crypto.dsig.XMLSignatureException;

-import javax.xml.crypto.dsig.XMLSignatureFactory;

-import javax.xml.crypto.dsig.dom.DOMSignContext;

-import javax.xml.crypto.dsig.keyinfo.KeyInfo;

-import javax.xml.crypto.dsig.keyinfo.KeyInfoFactory;

-import javax.xml.crypto.dsig.keyinfo.X509Data;

-import javax.xml.stream.XMLStreamException;

-

-import org.apache.commons.logging.Log;

-import org.apache.commons.logging.LogFactory;

-import org.etsi.uri._01903.v1_1.DataObjectFormatType;

-import org.etsi.uri._01903.v1_1.QualifyingPropertiesType;

-import org.w3c.dom.DOMConfiguration;

-import org.w3c.dom.DOMException;

-import org.w3c.dom.Document;

-import org.w3c.dom.DocumentFragment;

-import org.w3c.dom.Element;

-import org.w3c.dom.Node;

-import org.w3c.dom.NodeList;

-import org.w3c.dom.ls.DOMImplementationLS;

-import org.w3c.dom.ls.LSException;

-import org.w3c.dom.ls.LSInput;

-import org.w3c.dom.ls.LSOutput;

-import org.w3c.dom.ls.LSParser;

-import org.w3c.dom.ls.LSResourceResolver;

-import org.w3c.dom.ls.LSSerializer;

-

-import at.buergerkarte.namespaces.securitylayer._1.Base64XMLLocRefReqRefContentType;

-import at.buergerkarte.namespaces.securitylayer._1.Base64XMLOptRefContentType;

-import at.buergerkarte.namespaces.securitylayer._1.DataObjectAssociationType;

-import at.buergerkarte.namespaces.securitylayer._1.DataObjectInfoType;

-import at.buergerkarte.namespaces.securitylayer._1.SignatureInfoCreationType;

-import at.gv.egiz.bku.binding.HttpUtil;

-import at.gv.egiz.bku.slexceptions.SLCommandException;

-import at.gv.egiz.bku.slexceptions.SLRequestException;

-import at.gv.egiz.bku.utils.HexDump;

-import at.gv.egiz.bku.utils.urldereferencer.StreamData;

-import at.gv.egiz.bku.utils.urldereferencer.URLDereferencer;

-import at.gv.egiz.bku.utils.urldereferencer.URLDereferencerContext;

-import at.gv.egiz.dom.DOMUtils;

-import at.gv.egiz.slbinding.impl.XMLContentType;

-import at.gv.egiz.stal.HashDataInputCallback;

-import at.gv.egiz.stal.STAL;

-import at.gv.egiz.xades.QualifyingPropertiesException;

-import at.gv.egiz.xades.QualifyingPropertiesFactory;

-

-/**

- * This class represents an XML-Signature as to be created by the

- * security layer command <code>CreateXMLSignatureRequest</code>. 

- * 

- * @author mcentner

- */

-public class Signature implements HashDataInputCallback {

-  

-  /**

-   * Logging facility.

-   */

-  private static Log log = LogFactory.getLog(Signature.class);

-

-  /**

-   * The DOM implementation used.

-   */

-  private DOMImplementationLS domImplLS;

-  

-  /**

-   * The SignatureContext for the XMLSignature.

-   */

-  private SignatureContext ctx;

-  

-  /**

-   * The list of {@link DataObject}s for this signature.

-   */

-  private List<DataObject> dataObjects = new ArrayList<DataObject>();

-  

-  /**

-   * A mapping from the <code>Id</code>-attribute values of this signature's 

-   * <code>ds:Reference</code>s to the corresponding {@link DataObject}s.

-   */

-  private Map<String, DataObject> dataObjectReferencIds = new HashMap<String, DataObject>();

-  

-  /**

-   * The SignatureEnvironment for this signature.

-   */

-  private SignatureLocation signatureLocation;

-  

-  /**

-   * The XML signature.

-   */

-  private XMLSignature xmlSignature;

-  

-  /**

-   * A list of attributes of type <code>xsd:ID</code> to be registered in the {@link DOMSignContext}.

-   */

-  private List<IdAttribute> idAttributes = new ArrayList<IdAttribute>();

-  

-  /**

-   * The signer's X509 certificate.

-   */

-  private X509Certificate signerCertificate;

-  

-  /**

-   * The signing time.

-   */

-  private Date signingTime;

-  

-  /**

-   * Creates a new SLXMLSignature instance.

-   */

-  public Signature(URLDereferencerContext dereferencerContext,

-      IdValueFactory idValueFactory,

-      AlgorithmMethodFactory algorithmMethodFactory) {

-    

-    domImplLS = DOMUtils.getDOMImplementationLS();

-    

-    ctx = new SignatureContext();

-  

-    ctx.setSignatureFactory(XMLSignatureFactory.getInstance());

-

-    ctx.setDereferencerContext(dereferencerContext);

-    ctx.setIdValueFactory(idValueFactory);

-    ctx.setAlgorithmMethodFactory(algorithmMethodFactory);

-    

-  }

-

-  /**

-   * @return the Document containing this Signature

-   */

-  public Document getDocument() {

-    return ctx.getDocument();

-  }

-  

-  /**

-   * @return the parent Node for this Signature

-   */

-  public Node getParent() {

-    return (signatureLocation != null) ? signatureLocation.getParent() : null;

-  }

-

-  /**

-   * @return the next sibling Node for this Signature

-   */

-  public Node getNextSibling() {

-    return (signatureLocation != null) ? signatureLocation.getNextSibling() : null;

-  }

-  

-  /**

-   * @return the XMLSignature

-   */

-  public XMLSignature getXMLSignature() {

-    return xmlSignature;

-  }

-  

-  /**

-   * @return the list of {@link Reference}s of this Signature

-   */

-  @SuppressWarnings("unchecked")

-  public List<Reference> getReferences() {

-    return (xmlSignature != null) ? xmlSignature.getSignedInfo().getReferences() : null;

-  }

-  

-  /**

-   * @return the list of {@link XMLObject}s of this Signature

-   */

-  @SuppressWarnings("unchecked")

-  public List<XMLObject> getXMLObjects() {

-    return (xmlSignature != null) ? xmlSignature.getObjects() : null;

-  }

-

-  /**

-   * Prepares the signature document with the information given by the

-   * <code>signatureInfo</code> provided.

-   * 

-   * @param signatureInfo

-   *          the <code>SignatureInfo</code>

-   * 

-   * @throws SLCommandException

-   *           if processing fails for any reason

-   * @throws IllegalStateException

-   *           if the <code>parent</code> node has already been set

-   * @throws NullPointerException

-   *           if <code>signatureInfo</code> is <code>null</code>

-   */

-  public void setSignatureInfo(SignatureInfoCreationType signatureInfo) throws SLCommandException {

-    

-    if (signatureLocation != null) {

-      throw new IllegalStateException("SignatureEnvironment already set.");

-    }

-    

-    Base64XMLOptRefContentType signatureEnvironment = signatureInfo.getSignatureEnvironment();

-    

-    if (signatureEnvironment == null) {

-

-      // no SignatureEnvironment, so we use an empty document and the document as parent

-      ensureSignatureLocation();

-      

-    } else {

-      

-      // parse SignatureEnvrionment and use as document

-      Document document = parseSignatureEnvironment(signatureEnvironment, signatureInfo.getSupplement());

-      ctx.setDocument(document);

-

-      signatureLocation = new SignatureLocation(ctx);

-      signatureLocation.setSignatureInfo(signatureInfo);

-      

-    }

-    

-  }

-

-  /**

-   * Ensures a SignatureLocation for this Signature.

-   */

-  private void ensureSignatureLocation() {

-

-    if (signatureLocation == null) {

-      Document document = DOMUtils.createDocument();

-      ctx.setDocument(document);

-      

-      signatureLocation = new SignatureLocation(ctx);

-      signatureLocation.setParent(document);

-    }

-    

-  }

-

-  /**

-   * Adds a DataObject with the information given by the

-   * <code>dataObjectInfo</code> provided to this Signature.

-   * 

-   * @param dataObjectInfo

-   *          the <code>DataObjectInfo</code> element

-   * 

-   * @throws SLCommandException

-   *           if adding the DataObject fails

-   * @throws SLRequestException

-   *           if the information provided by the given

-   *           <code>dataObjectInfo</code> does not conform to the security

-   *           layer specification

-   * @throws NullPointerException

-   *           if <code>dataObjectInfo</code> is <code>null</code>

-   */

-  public void addDataObject(DataObjectInfoType dataObjectInfo) throws SLCommandException, SLRequestException {

-    

-    ensureSignatureLocation();

-    

-    DataObject dataObject = new DataObject(ctx);

-    dataObject.setDataObjectInfo(dataObjectInfo);

-    

-    dataObjects.add(dataObject);

-    

-    dataObjectReferencIds.put(dataObject.getReference().getId(), dataObject);

-    

-  }

-  

-  /**

-   * Sets the <code>SigningTime</code> qualifying property of this Signature.

-   * 

-   * @param signingTime the signing time to set

-   */

-  public void setSigningTime(Date signingTime) {

-    this.signingTime = signingTime;

-  }

-

-  /**

-   * Sets the <code>SignerCertificate</code> qualifying property of this Signature.

-   * 

-   * @param certificate the signer's certificate

-   */

-  public void setSignerCeritifcate(X509Certificate certificate) {

-    this.signerCertificate = certificate;

-  }

-  

-  /**

-   * Builds the XMLSignature data structure of this Signature as configured by

-   * the various setter methods.

-   * 

-   * @throws SLCommandException if building this signature fails

-   */

-  public void buildXMLSignature() throws SLCommandException {

-    

-    List<XMLObject> objects = new ArrayList<XMLObject>();

-    List<Reference> references = new ArrayList<Reference>();

-    

-    // add all data objects

-    for (DataObject dataObject : dataObjects) {

-      if (dataObject.getXmlObject() != null) {

-        objects.add(dataObject.getXmlObject());

-      }

-      if (dataObject.getReference() != null) {

-        references.add(dataObject.getReference());

-      }

-    }

-

-    addXAdESObjectAndReference(objects, references);

-    

-    XMLSignatureFactory signatureFactory = ctx.getSignatureFactory();

-    AlgorithmMethodFactory algorithmMethodFactory = ctx.getAlgorithmMethodFactory();

-    

-    CanonicalizationMethod cm;

-    SignatureMethod sm;

-    try {

-      cm = algorithmMethodFactory.createCanonicalizationMethod(ctx);

-      sm = algorithmMethodFactory.createSignatureMethod(ctx);

-    } catch (NoSuchAlgorithmException e) {

-      log.error("Failed to get Canonicalization or Signature algorithm.", e);

-      throw new SLCommandException(4006);

-    } catch (InvalidAlgorithmParameterException e) {

-      log.error("Failed to get Canonicalization or Signature algorithm.", e);

-      throw new SLCommandException(4006);

-    }

-    

-    String siId = ctx.getIdValueFactory().createIdValue("SignedInfo");

-    

-    SignedInfo si = signatureFactory.newSignedInfo(cm, sm, references, siId);

-    

-    KeyInfo ki = null;

-    if (signerCertificate != null) {

-      KeyInfoFactory kif = KeyInfoFactory.getInstance();

-      X509Data x509Data = kif.newX509Data(Collections.singletonList(signerCertificate));

-      ki = kif.newKeyInfo(Collections.singletonList(x509Data));

-    }

-    

-    String signatureId = ctx.getIdValueFactory().createIdValue("Signature");

-    String signatureValueId = ctx.getIdValueFactory().createIdValue("SignatureValue");

-    

-    xmlSignature = signatureFactory.newXMLSignature(si, ki, objects, signatureId, signatureValueId);

-    

-  }

-

-  /**

-   * Sign this Signature using the given <code>signContext</code>.

-   * <p>

-   * Call's {@link #buildXMLSignature()} if it has not been called yet.

-   * </p>

-   * 

-   * @param signContext

-   *          the signing context

-   * 

-   * @throws MarshalException

-   *           if marshalling the XMLSignature fails

-   * @throws XMLSignatureException

-   *           if signing the XMLSignature fails

-   * @throws SLCommandException

-   *           if building the XMLSignature fails

-   * @throws NullPointerException

-   *           if <code>signContext</code> is <code>null</code>

-   */

-  public void sign(DOMSignContext signContext) throws MarshalException, XMLSignatureException, SLCommandException {

-

-    if (xmlSignature == null) {

-      buildXMLSignature();

-    }

-    

-    for (IdAttribute idAttribute : idAttributes) {

-      signContext.setIdAttributeNS(idAttribute.element, idAttribute.namespaceURI, idAttribute.localName);

-    }

-    

-    // DO NOT USE: 

-    // signContext.setProperty("iaik.xml.crypto.dsig.sign-over", Boolean.TRUE);

-    

-    signContext.setProperty("javax.xml.crypto.dsig.cacheReference", Boolean.TRUE);

-    

-    signContext.putNamespacePrefix(XMLSignature.XMLNS, "dsig");

-    

-    signContext.setURIDereferencer(new URIDereferncerAdapter(ctx.getDereferencerContext()));

-    

-    try {

-      xmlSignature.sign(signContext);

-    } catch (XMLSignatureException e) {

-      Throwable cause = e.getCause();

-      while (cause != null) {

-        if (cause instanceof STALSignatureException) {

-          int errorCode = ((STALSignatureException) cause).getErrorCode();

-          SLCommandException commandException = new SLCommandException(errorCode);

-          log.info("Failed to sign signature.", commandException);

-          throw commandException;

-        } else {

-          cause = cause.getCause();

-        }

-      }

-      throw e;

-    }

-    

-    // debug

-    if (log.isTraceEnabled()) {

-      for (DataObject dataObject : dataObjects) {

-        Reference reference = dataObject.getReference();

-        InputStream digestInputStream = reference.getDigestInputStream();

-        if (digestInputStream != null) {

-          String mimeType = dataObject.getMimeType();

-          StringBuilder sb = new StringBuilder();

-          sb.append("DigestInput for Reference with id='");

-          sb.append(reference.getId());

-          sb.append("' (MIME-Type=");

-          sb.append(dataObject.getMimeType());

-          sb.append("):\n");

-          try {

-            if (mimeType != null && (

-                mimeType.startsWith("text") ||

-                "application/xhtml+xml".equals(mimeType))) {

-              byte[] b = new byte[512];

-              for (int l; (l = digestInputStream.read(b)) != -1;) {

-                sb.append(new String(b, 0, l));

-              }

-            } else {

-              sb.append(HexDump.hexDump(digestInputStream));

-            }

-          } catch (IOException e) {

-            log.error(e);

-          }

-          log.trace(sb.toString());

-        } else {

-          log.trace("Reference caching is not enabled.");

-        }

-      }

-    }

-    

-  }

-

-  /**

-   * Sign this Signature using the given <code>stal</code> implementation and

-   * <code>keyboxIdentifier</code>.

-   * <p>

-   * This method configures an appropriate {@link DOMSignContext} and calls

-   * {@link #sign(DOMSignContext)}. If {@link #buildXMLSignature()} has not been

-   * called yet, it is called by this method.

-   * </p>

-   * 

-   * @param stal

-   *          the STAL implementation to use

-   * @param keyboxIdentifier

-   *          the KeyboxIdentifier to use

-   * 

-   * @throws MarshalException

-   *           if marshalling this Signature fails

-   * @throws XMLSignatureException

-   *           if signing this Signature fails

-   * @throws SLCommandException

-   *           if building this Signature fails 

-   * @throws NullPointerException

-   *           if <code>stal</code> or <code>keyboxIdentifier</code> is

-   *           <code>null</code>

-   */

-  public void sign(STAL stal, String keyboxIdentifier) throws MarshalException, XMLSignatureException, SLCommandException {

-

-    if (stal == null) {

-      throw new NullPointerException("Argument 'stal' must not be null.");

-    }

-    

-    if (keyboxIdentifier == null) {

-      throw new NullPointerException("Argument 'keyboxIdentifier' must not be null.");

-    }

-    

-    if (xmlSignature == null) {

-      buildXMLSignature();

-    }

-    

-    SignatureMethod signatureMethod = xmlSignature.getSignedInfo().getSignatureMethod();

-    String algorithm = signatureMethod.getAlgorithm();

-    

-    PrivateKey privateKey = new STALPrivateKey(stal, algorithm, keyboxIdentifier, this);

-    

-    DOMSignContext signContext;

-    if (getNextSibling() == null) {

-      signContext = new DOMSignContext(privateKey, getParent());

-    } else {

-      signContext = new DOMSignContext(privateKey, getParent(), getNextSibling());

-    }

-    

-    sign(signContext);

-  }

-  

-  @Override

-  public InputStream getHashDataInput(String referenceId) {

-    

-    DataObject dataObject = dataObjectReferencIds.get(referenceId);

-    if (dataObject != null) {

-      return dataObject.getReference().getDigestInputStream();

-    } else {

-      return null;

-    }

-  }

-

-  /**

-   * Adds the XAdES <code>QualifyingProperties</code> as an

-   * <code>ds:Object</code> and a corresponding <code>ds:Reference</code> to

-   * it's <code>SignedProperties</code> element to this Signature.

-   * 

-   * @param objects

-   *          the list of <code>ds:Objects</code> to add the created

-   *          <code>ds:Object</code> to

-   * @param references

-   *          the list of <code>ds:References</code> to add the created

-   *          <code>ds:Reference</code> to

-   * 

-   * @throws SLCommandException

-   *           if creating and adding the XAdES

-   *           <code>QualifyingProperties</code> fails

-   * @throws NullPointerException

-   *           if <code>objects</code> or <code>references</code> is

-   *           <code>null</code>

-   */

-  private void addXAdESObjectAndReference(List<XMLObject> objects, List<Reference> references) throws SLCommandException {

-    

-    QualifyingPropertiesFactory factory = QualifyingPropertiesFactory.getInstance();

-    

-    String idValue = ctx.getIdValueFactory().createIdValue("SignedProperties");

-    

-    Date date = (signingTime != null) ? signingTime : new Date();

-    

-    List<X509Certificate> signingCertificates;

-    if (signerCertificate != null) {

-      signingCertificates = Collections.singletonList(signerCertificate);

-    } else {

-      signingCertificates = Collections.emptyList();

-    }

-    

-    // TODO: report MOA-SP bug

-    //

-    // The security layer specification mandates the use of version 1.2.2. of the

-    // XAdES QualifyingProperties. However MOA-SP supports only version 1.1.1. Therefore,

-    // the version 1.1.1 is used in order to be compatible with current MOA-SP versions.

-    

-    List<DataObjectFormatType> dataObjectFormats = new ArrayList<DataObjectFormatType>();

-    for (DataObject dataObject : dataObjects) {

-      if (dataObject.getMimeType() != null && dataObject.getReference() != null) {

-        Reference reference = dataObject.getReference();

-        if (reference.getId() != null) {

-          String objectReference = "#" + reference.getId();

-          dataObjectFormats.add(factory.createDataObjectFormatType(

-              objectReference, dataObject.getMimeType(), dataObject

-                  .getDescription()));

-        }

-      }

-    }

-    

-    JAXBElement<QualifyingPropertiesType> qualifyingProperties;

-    try {

-      qualifyingProperties = factory.createQualifyingProperties111(date, signingCertificates, idValue, dataObjectFormats);

-    } catch (QualifyingPropertiesException e) {

-      log.error("Failed to create QualifyingProperties.", e);

-      throw new SLCommandException(4000);

-    }

-    

-    DocumentFragment fragment = ctx.getDocument().createDocumentFragment();

-    

-    try {

-      factory.marshallQualifyingProperties(qualifyingProperties, fragment);

-    } catch (JAXBException e) {

-      log.error("Failed to marshal QualifyingProperties.", e);

-      throw new SLCommandException(4000);

-    }

-    

-    List<DOMStructure> content = Collections.singletonList(new DOMStructure(fragment.getFirstChild()));

-    

-    String objectIdValue = ctx.getIdValueFactory().createIdValue("Object");

-    

-    XMLObject object = ctx.getSignatureFactory().newXMLObject(content, objectIdValue, null, null);

-    

-    objects.add(object);

-

-    // TODO: Report MOA-SP Bug

-    //

-    // Direct referencing of the SignedPorperties Id-attribute is not supported by MOA-SP

-    // because the QualifyingProperties are parsed without the XAdES schema. Therefore,

-    // the shorthand XPointer could not be resolved.

-    //

-    // The following workaround uses an XPointer to select the SignedProperties in order

-    // to allow the signature to be verified with MOA-SP.

-    

-    String referenceURI = "#xmlns(xades=http://uri.etsi.org/01903/v1.1.1%23)%20xpointer(id('"

-        + objectIdValue

-        + "')/child::xades:QualifyingProperties/child::xades:SignedProperties)";

-    DigestMethod dm;

-    try {

-      dm = ctx.getAlgorithmMethodFactory().createDigestMethod(ctx);

-    } catch (NoSuchAlgorithmException e) {

-      log.error("Failed to get DigestMethod algorithm.", e);

-      throw new SLCommandException(4006);

-    } catch (InvalidAlgorithmParameterException e) {

-      log.error("Failed to get DigestMethod algorithm.", e);

-      throw new SLCommandException(4006);

-    }

-    

-    String referenceIdValue = ctx.getIdValueFactory().createIdValue("Reference");

-    String referenceType = QualifyingPropertiesFactory.SIGNED_PROPERTIES_REFERENCE_TYPE_V1_1_1;

-    

-    Reference reference = ctx.getSignatureFactory().newReference(referenceURI, dm, null, referenceType, referenceIdValue);

-    

-    references.add(reference);

-    

-    Node child = fragment.getFirstChild();

-    if (child instanceof Element) {

-      NodeList nodes = ((Element) child).getElementsByTagNameNS(QualifyingPropertiesFactory.NS_URI_V1_1_1, "SignedProperties");

-      if (nodes.getLength() > 0) {

-        IdAttribute idAttribute = new IdAttribute();

-        idAttribute.element = (Element) nodes.item(0);

-        idAttribute.namespaceURI = null;

-        idAttribute.localName = "Id";

-        idAttributes.add(idAttribute);

-      }

-    }

-    

-  }

-

-  /**

-   * Parse the SignatureEnvironment.

-   * 

-   * @param signatureEnvironment

-   *          the <code>SignatureEnvironment</code> element

-   * @param supplements

-   *          an optional list of <code>Supplements</code> (may be

-   *          <code>null</code>)

-   * 

-   * @return the parsed SignatureEnvironment document

-   * 

-   * @throws SLCommandException

-   *           if parsing the SignatureEnvironment fails

-   * @throws NullPointerException

-   *           if <code>signatureEnvironment</code> is <code>null</code>

-   */

-  private Document parseSignatureEnvironment(

-      Base64XMLOptRefContentType signatureEnvironment,

-      List<DataObjectAssociationType> supplements) throws SLCommandException {

-

-    if (signatureEnvironment == null) {

-      throw new NullPointerException("Argument 'signatureEnvironment' must not be null.");

-    }

-    

-    LSInput input;

-    try {

-      if (signatureEnvironment.getReference() != null) {

-        log.debug("SignatureEnvironment contains Reference " + signatureEnvironment.getReference() + ".");

-        input = createLSInput(signatureEnvironment.getReference());

-      } else if (signatureEnvironment.getBase64Content() != null) {

-        log.debug("SignatureEnvironment contains Base64Content.");

-        input = createLSInput(signatureEnvironment.getBase64Content());

-      } else if (signatureEnvironment.getXMLContent() != null) {

-        log.debug("SignatureEnvironment contains XMLContent.");

-        input = createLSInput((XMLContentType) signatureEnvironment.getXMLContent());

-      } else {

-        // the schema does not allow us to reach this point

-        throw new SLCommandException(4000);

-      }

-    } catch (IOException e) {

-      log.info("XML document in which the signature is to be integrated cannot be resolved.", e);

-      throw new SLCommandException(4100);

-    } catch (XMLStreamException e) {

-      log.info("XML document in which the signature is to be integrated cannot be resolved.", e);

-      throw new SLCommandException(4100);

-    }

-    

-    LSParser parser = domImplLS.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, null);

-    DOMConfiguration domConfig = parser.getDomConfig();

-    SimpleDOMErrorHandler errorHandler = new SimpleDOMErrorHandler();

-    domConfig.setParameter("error-handler", errorHandler);

-    LSResourceResolverAdapter resourceResolver = new LSResourceResolverAdapter(supplements);

-    domConfig.setParameter("resource-resolver", resourceResolver);

-    domConfig.setParameter("validate", Boolean.TRUE);

-

-    Document doc;

-    try {

-      doc = parser.parse(input);

-    } catch (DOMException e) {

-      log.info("XML document in which the signature is to be integrated cannot be parsed.", e);

-      throw new SLCommandException(4101);

-    } catch (LSException e) {

-      log.info("XML document in which the signature is to be integrated cannot be parsed.", e);

-      throw new SLCommandException(4101);

-    }

-    

-    if (resourceResolver.getError() != null) {

-      log.info("Failed to resolve resource while parsing SignatureEnvironment document.", resourceResolver.getError());

-      // we don't stop here, as we only _try_ to parse validating

-    }

-    

-    if (errorHandler.hasFatalErrors()) {

-      // log fatal errors

-      if (log.isInfoEnabled()) {

-        List<String> errorMessages = errorHandler.getErrorMessages();

-        StringBuffer sb = new StringBuffer();

-        for (String errorMessage : errorMessages) {

-          sb.append(" ");

-          sb.append(errorMessage);

-        }

-        log.info("XML document in which the signature is to be integrated cannot be parsed." + sb.toString());

-      }

-      throw new SLCommandException(4101);

-    }

-

-    // log parsed document

-    if (log.isTraceEnabled()) {

-      

-      StringWriter writer = new StringWriter();

-      

-      writer.write("SignatureEnvironment:\n");

-      

-      LSOutput output = domImplLS.createLSOutput();

-      output.setCharacterStream(writer);

-      output.setEncoding("UTF-8");

-      LSSerializer serializer = domImplLS.createLSSerializer();

-      serializer.write(doc, output);

-      

-      log.trace(writer.toString());

-    }

-

-    return doc;

-    

-  }

-

-  /**

-   * Creates an LSInput from the given <code>reference</code> URI.

-   * 

-   * @param reference

-   *          the reference URL

-   * 

-   * @return an LSInput from the given <code>reference</code> URI

-   * 

-   * @throws IOException

-   *           if dereferencing the given <code>reference</code> fails

-   */

-  private LSInput createLSInput(String reference) throws IOException {

-    

-    URLDereferencer urlDereferencer = URLDereferencer.getInstance();

-    StreamData streamData = urlDereferencer.dereference(reference, ctx.getDereferencerContext());

-

-    String contentType = streamData.getContentType();

-    String charset = HttpUtil.getCharset(contentType, true);

-    InputStreamReader streamReader;

-    try {

-      streamReader = new InputStreamReader(streamData.getStream(), charset);

-    } catch (UnsupportedEncodingException e) {

-      log.info("Charset " + charset + " not supported. Using default.");

-      streamReader = new InputStreamReader(streamData.getStream());

-    }

-

-    LSInput input = domImplLS.createLSInput();

-    input = domImplLS.createLSInput();

-    input.setCharacterStream(streamReader);

-    

-    return input;

-    

-  }

-

-  /**

-   * Creates an LSInput from the given <code>content</code> bytes.

-   * 

-   * @param content

-   *          the content bytes

-   * 

-   * @return an LSInput from the givne <code>content</code> bytes

-   */

-  private LSInput createLSInput(byte[] content) {

-    

-    ByteArrayInputStream inputStream = new ByteArrayInputStream(content);

-    LSInput input = domImplLS.createLSInput();

-    input.setByteStream(inputStream);

-

-    return input;

-    

-  }

-

-  /**

-   * Creates an LSInput from the given XML <code>content</code>.

-   * 

-   * @param content

-   *          the XML content

-   * @return an LSInput from the given XML <code>content</code>

-   * 

-   * @throws XMLStreamException

-   *           if reading the XMLStream from the given XML content fails

-   */

-  private LSInput createLSInput(XMLContentType content) throws XMLStreamException {

-

-    ByteArrayOutputStream redirectedStream = content.getRedirectedStream();

-    if (redirectedStream != null) {

-      LSInput input = domImplLS.createLSInput();

-      input.setByteStream(new ByteArrayInputStream(redirectedStream.toByteArray()));

-      return input;

-    } else {

-      return null;

-    }

-    

-  }

-  

-  /**

-   * Represents an <code>xsd:Id</code>-attribute value.

-   * 

-   * @author mcentner

-   */

-  private class IdAttribute {

-    

-    private Element element;

-    

-    private String namespaceURI;

-    

-    private String localName;

-    

-  }

-  

-  /**

-   * An implementation of the LSResourceResolver that uses a list of supplements

-   * to resolve resources.

-   * 

-   * @author mcentner

-   */

-  private class LSResourceResolverAdapter implements LSResourceResolver {

-    

-    List<DataObjectAssociationType> supplements;

-    

-    private LSResourceResolverAdapter(

-        List<DataObjectAssociationType> supplements) {

-      this.supplements = supplements;

-    }

-  

-    private Exception error;

-    

-    /**

-     * @return the error

-     */

-    public Exception getError() {

-      return error;

-    }

-  

-    @Override

-    public LSInput resolveResource(String type, String namespaceURI,

-        String publicId, String systemId, String baseURI) {

-  

-      if (log.isTraceEnabled()) {

-        log.trace("Resolve resource :" +

-            "\n  type=" + type +

-            "\n  namespaceURI=" + namespaceURI +

-            "\n  publicId=" + publicId +

-            "\n  systemId=" + systemId +

-            "\n  baseURI=" + baseURI);

-      }

-  

-      if (systemId != null) {

-

-        log.debug("Resolve resource '" + systemId + "'.");

-        

-        for (DataObjectAssociationType supplement : supplements) {

-          

-          Base64XMLLocRefReqRefContentType content = supplement.getContent();

-          if (content != null) {

-  

-            String reference = content.getReference();

-            if (systemId.equals(reference)) {

-              

-              try {

-                if (content.getLocRefContent() != null) {

-                  log.trace("Resolved resource '" + reference + "' to supplement with LocRefContent.");

-                  return createLSInput(content.getLocRefContent());

-                } else if (content.getBase64Content() != null) {

-                  log.trace("Resolved resource '" + reference + "' to supplement with Base64Content.");

-                  return createLSInput(content.getBase64Content());

-                } else if (content.getXMLContent() != null) {

-                  log.trace("Resolved resource '" + reference + "' to supplement with XMLContent.");

-                  return createLSInput((XMLContentType) content.getXMLContent());

-                } else {

-                  return null;

-                }

-              } catch (IOException e) {

-                log.info("Failed to resolve resource '" + systemId + "' to supplement.", e);

-                error = e;

-                return null;

-              } catch (XMLStreamException e) {

-                log.info("Failed to resolve resource '" + systemId + "' to supplement.", e);

-                error = e;

-                return null;

-              }

-              

-            }

-  

-          }

-          

-        }

-

-        log.info("Failed to resolve resource '" + systemId + "' to supplement. No such supplement.");

-        

-      }

-  

-      return null;

-      

-    }

-    

-    

-  }

-

-}

+package at.gv.egiz.bku.slcommands.impl.xsect;
+
+import at.gv.egiz.stal.HashDataInput;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.StringWriter;
+import java.io.UnsupportedEncodingException;
+import java.security.InvalidAlgorithmParameterException;
+import java.security.NoSuchAlgorithmException;
+import java.security.PrivateKey;
+import java.security.cert.X509Certificate;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.xml.bind.JAXBElement;
+import javax.xml.bind.JAXBException;
+import javax.xml.crypto.MarshalException;
+import javax.xml.crypto.dom.DOMStructure;
+import javax.xml.crypto.dsig.CanonicalizationMethod;
+import javax.xml.crypto.dsig.DigestMethod;
+import javax.xml.crypto.dsig.Reference;
+import javax.xml.crypto.dsig.SignatureMethod;
+import javax.xml.crypto.dsig.SignedInfo;
+import javax.xml.crypto.dsig.XMLObject;
+import javax.xml.crypto.dsig.XMLSignature;
+import javax.xml.crypto.dsig.XMLSignatureException;
+import javax.xml.crypto.dsig.XMLSignatureFactory;
+import javax.xml.crypto.dsig.dom.DOMSignContext;
+import javax.xml.crypto.dsig.keyinfo.KeyInfo;
+import javax.xml.crypto.dsig.keyinfo.KeyInfoFactory;
+import javax.xml.crypto.dsig.keyinfo.X509Data;
+import javax.xml.stream.XMLStreamException;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.etsi.uri._01903.v1_1.DataObjectFormatType;
+import org.etsi.uri._01903.v1_1.QualifyingPropertiesType;
+import org.w3c.dom.DOMConfiguration;
+import org.w3c.dom.DOMException;
+import org.w3c.dom.Document;
+import org.w3c.dom.DocumentFragment;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.w3c.dom.ls.DOMImplementationLS;
+import org.w3c.dom.ls.LSException;
+import org.w3c.dom.ls.LSInput;
+import org.w3c.dom.ls.LSOutput;
+import org.w3c.dom.ls.LSParser;
+import org.w3c.dom.ls.LSResourceResolver;
+import org.w3c.dom.ls.LSSerializer;
+
+import at.buergerkarte.namespaces.securitylayer._1.Base64XMLLocRefReqRefContentType;
+import at.buergerkarte.namespaces.securitylayer._1.Base64XMLOptRefContentType;
+import at.buergerkarte.namespaces.securitylayer._1.DataObjectAssociationType;
+import at.buergerkarte.namespaces.securitylayer._1.DataObjectInfoType;
+import at.buergerkarte.namespaces.securitylayer._1.SignatureInfoCreationType;
+import at.gv.egiz.bku.binding.HttpUtil;
+import at.gv.egiz.bku.slexceptions.SLCommandException;
+import at.gv.egiz.bku.slexceptions.SLRequestException;
+import at.gv.egiz.bku.utils.HexDump;
+import at.gv.egiz.bku.utils.urldereferencer.StreamData;
+import at.gv.egiz.bku.utils.urldereferencer.URLDereferencer;
+import at.gv.egiz.bku.utils.urldereferencer.URLDereferencerContext;
+import at.gv.egiz.dom.DOMUtils;
+import at.gv.egiz.slbinding.impl.XMLContentType;
+import at.gv.egiz.stal.STAL;
+import at.gv.egiz.xades.QualifyingPropertiesException;
+import at.gv.egiz.xades.QualifyingPropertiesFactory;
+
+/**
+ * This class represents an XML-Signature as to be created by the
+ * security layer command <code>CreateXMLSignatureRequest</code>. 
+ * 
+ * @author mcentner
+ */
+public class Signature {
+  
+  /**
+   * Logging facility.
+   */
+  private static Log log = LogFactory.getLog(Signature.class);
+
+  /**
+   * The DOM implementation used.
+   */
+  private DOMImplementationLS domImplLS;
+  
+  /**
+   * The SignatureContext for the XMLSignature.
+   */
+  private SignatureContext ctx;
+  
+  /**
+   * The list of {@link DataObject}s for this signature.
+   */
+  private List<DataObject> dataObjects = new ArrayList<DataObject>();
+  
+  /**
+   * A mapping from the <code>Id</code>-attribute values of this signature's 
+   * <code>ds:Reference</code>s to the corresponding {@link DataObject}s.
+   */
+//  private Map<String, DataObject> dataObjectReferencIds = new HashMap<String, DataObject>();
+  
+  /**
+   * The SignatureEnvironment for this signature.
+   */
+  private SignatureLocation signatureLocation;
+  
+  /**
+   * The XML signature.
+   */
+  private XMLSignature xmlSignature;
+  
+  /**
+   * A list of attributes of type <code>xsd:ID</code> to be registered in the {@link DOMSignContext}.
+   */
+  private List<IdAttribute> idAttributes = new ArrayList<IdAttribute>();
+  
+  /**
+   * The signer's X509 certificate.
+   */
+  private X509Certificate signerCertificate;
+  
+  /**
+   * The signing time.
+   */
+  private Date signingTime;
+  
+  /**
+   * Creates a new SLXMLSignature instance.
+   */
+  public Signature(URLDereferencerContext dereferencerContext,
+      IdValueFactory idValueFactory,
+      AlgorithmMethodFactory algorithmMethodFactory) {
+    
+    domImplLS = DOMUtils.getDOMImplementationLS();
+    
+    ctx = new SignatureContext();
+  
+    ctx.setSignatureFactory(XMLSignatureFactory.getInstance());
+
+    ctx.setDereferencerContext(dereferencerContext);
+    ctx.setIdValueFactory(idValueFactory);
+    ctx.setAlgorithmMethodFactory(algorithmMethodFactory);
+    
+  }
+
+  /**
+   * @return the Document containing this Signature
+   */
+  public Document getDocument() {
+    return ctx.getDocument();
+  }
+  
+  /**
+   * @return the parent Node for this Signature
+   */
+  public Node getParent() {
+    return (signatureLocation != null) ? signatureLocation.getParent() : null;
+  }
+
+  /**
+   * @return the next sibling Node for this Signature
+   */
+  public Node getNextSibling() {
+    return (signatureLocation != null) ? signatureLocation.getNextSibling() : null;
+  }
+  
+  /**
+   * @return the XMLSignature
+   */
+  public XMLSignature getXMLSignature() {
+    return xmlSignature;
+  }
+  
+  /**
+   * @return the list of {@link Reference}s of this Signature
+   */
+  @SuppressWarnings("unchecked")
+  public List<Reference> getReferences() {
+    return (xmlSignature != null) ? xmlSignature.getSignedInfo().getReferences() : null;
+  }
+  
+  /**
+   * @return the list of {@link XMLObject}s of this Signature
+   */
+  @SuppressWarnings("unchecked")
+  public List<XMLObject> getXMLObjects() {
+    return (xmlSignature != null) ? xmlSignature.getObjects() : null;
+  }
+
+  /**
+   * Prepares the signature document with the information given by the
+   * <code>signatureInfo</code> provided.
+   * 
+   * @param signatureInfo
+   *          the <code>SignatureInfo</code>
+   * 
+   * @throws SLCommandException
+   *           if processing fails for any reason
+   * @throws IllegalStateException
+   *           if the <code>parent</code> node has already been set
+   * @throws NullPointerException
+   *           if <code>signatureInfo</code> is <code>null</code>
+   */
+  public void setSignatureInfo(SignatureInfoCreationType signatureInfo) throws SLCommandException {
+    
+    if (signatureLocation != null) {
+      throw new IllegalStateException("SignatureEnvironment already set.");
+    }
+    
+    Base64XMLOptRefContentType signatureEnvironment = signatureInfo.getSignatureEnvironment();
+    
+    if (signatureEnvironment == null) {
+
+      // no SignatureEnvironment, so we use an empty document and the document as parent
+      ensureSignatureLocation();
+      
+    } else {
+      
+      // parse SignatureEnvrionment and use as document
+      Document document = parseSignatureEnvironment(signatureEnvironment, signatureInfo.getSupplement());
+      ctx.setDocument(document);
+
+      signatureLocation = new SignatureLocation(ctx);
+      signatureLocation.setSignatureInfo(signatureInfo);
+      
+    }
+    
+  }
+
+  /**
+   * Ensures a SignatureLocation for this Signature.
+   */
+  private void ensureSignatureLocation() {
+
+    if (signatureLocation == null) {
+      Document document = DOMUtils.createDocument();
+      ctx.setDocument(document);
+      
+      signatureLocation = new SignatureLocation(ctx);
+      signatureLocation.setParent(document);
+    }
+    
+  }
+
+  /**
+   * Adds a DataObject with the information given by the
+   * <code>dataObjectInfo</code> provided to this Signature.
+   * 
+   * @param dataObjectInfo
+   *          the <code>DataObjectInfo</code> element
+   * 
+   * @throws SLCommandException
+   *           if adding the DataObject fails
+   * @throws SLRequestException
+   *           if the information provided by the given
+   *           <code>dataObjectInfo</code> does not conform to the security
+   *           layer specification
+   * @throws NullPointerException
+   *           if <code>dataObjectInfo</code> is <code>null</code>
+   */
+  public void addDataObject(DataObjectInfoType dataObjectInfo) throws SLCommandException, SLRequestException {
+    
+    ensureSignatureLocation();
+    
+    DataObject dataObject = new DataObject(ctx);
+    dataObject.setDataObjectInfo(dataObjectInfo);
+    
+    dataObjects.add(dataObject);
+    
+//    dataObjectReferencIds.put(dataObject.getReference().getId(), dataObject);
+    
+  }
+  
+  /**
+   * Sets the <code>SigningTime</code> qualifying property of this Signature.
+   * 
+   * @param signingTime the signing time to set
+   */
+  public void setSigningTime(Date signingTime) {
+    this.signingTime = signingTime;
+  }
+
+  /**
+   * Sets the <code>SignerCertificate</code> qualifying property of this Signature.
+   * 
+   * @param certificate the signer's certificate
+   */
+  public void setSignerCeritifcate(X509Certificate certificate) {
+    this.signerCertificate = certificate;
+  }
+  
+  /**
+   * Builds the XMLSignature data structure of this Signature as configured by
+   * the various setter methods.
+   * 
+   * @throws SLCommandException if building this signature fails
+   */
+  public void buildXMLSignature() throws SLCommandException {
+    
+    List<XMLObject> objects = new ArrayList<XMLObject>();
+    List<Reference> references = new ArrayList<Reference>();
+    
+    // add all data objects
+    for (DataObject dataObject : dataObjects) {
+      if (dataObject.getXmlObject() != null) {
+        objects.add(dataObject.getXmlObject());
+      }
+      if (dataObject.getReference() != null) {
+        references.add(dataObject.getReference());
+      }
+    }
+
+    addXAdESObjectAndReference(objects, references);
+    
+    XMLSignatureFactory signatureFactory = ctx.getSignatureFactory();
+    AlgorithmMethodFactory algorithmMethodFactory = ctx.getAlgorithmMethodFactory();
+    
+    CanonicalizationMethod cm;
+    SignatureMethod sm;
+    try {
+      cm = algorithmMethodFactory.createCanonicalizationMethod(ctx);
+      sm = algorithmMethodFactory.createSignatureMethod(ctx);
+    } catch (NoSuchAlgorithmException e) {
+      log.error("Failed to get Canonicalization or Signature algorithm.", e);
+      throw new SLCommandException(4006);
+    } catch (InvalidAlgorithmParameterException e) {
+      log.error("Failed to get Canonicalization or Signature algorithm.", e);
+      throw new SLCommandException(4006);
+    }
+    
+    String siId = ctx.getIdValueFactory().createIdValue("SignedInfo");
+    
+    SignedInfo si = signatureFactory.newSignedInfo(cm, sm, references, siId);
+    
+    KeyInfo ki = null;
+    if (signerCertificate != null) {
+      KeyInfoFactory kif = KeyInfoFactory.getInstance();
+      X509Data x509Data = kif.newX509Data(Collections.singletonList(signerCertificate));
+      ki = kif.newKeyInfo(Collections.singletonList(x509Data));
+    }
+    
+    String signatureId = ctx.getIdValueFactory().createIdValue("Signature");
+    String signatureValueId = ctx.getIdValueFactory().createIdValue("SignatureValue");
+    
+    xmlSignature = signatureFactory.newXMLSignature(si, ki, objects, signatureId, signatureValueId);
+    
+  }
+
+  /**
+   * Sign this Signature using the given <code>signContext</code>.
+   * <p>
+   * Call's {@link #buildXMLSignature()} if it has not been called yet.
+   * </p>
+   * 
+   * @param signContext
+   *          the signing context
+   * 
+   * @throws MarshalException
+   *           if marshalling the XMLSignature fails
+   * @throws XMLSignatureException
+   *           if signing the XMLSignature fails
+   * @throws SLCommandException
+   *           if building the XMLSignature fails
+   * @throws NullPointerException
+   *           if <code>signContext</code> is <code>null</code>
+   */
+  public void sign(DOMSignContext signContext) throws MarshalException, XMLSignatureException, SLCommandException {
+
+    if (xmlSignature == null) {
+      buildXMLSignature();
+    }
+    
+    for (IdAttribute idAttribute : idAttributes) {
+      signContext.setIdAttributeNS(idAttribute.element, idAttribute.namespaceURI, idAttribute.localName);
+    }
+    
+    // DO NOT USE: 
+    // signContext.setProperty("iaik.xml.crypto.dsig.sign-over", Boolean.TRUE);
+    
+    signContext.setProperty("javax.xml.crypto.dsig.cacheReference", Boolean.TRUE);
+    
+    signContext.putNamespacePrefix(XMLSignature.XMLNS, "dsig");
+    
+    signContext.setURIDereferencer(new URIDereferncerAdapter(ctx.getDereferencerContext()));
+    
+    try {
+      xmlSignature.sign(signContext);
+    } catch (XMLSignatureException e) {
+      Throwable cause = e.getCause();
+      while (cause != null) {
+        if (cause instanceof STALSignatureException) {
+          int errorCode = ((STALSignatureException) cause).getErrorCode();
+          SLCommandException commandException = new SLCommandException(errorCode);
+          log.info("Failed to sign signature.", commandException);
+          throw commandException;
+        } else {
+          cause = cause.getCause();
+        }
+      }
+      throw e;
+    }
+    
+    // debug
+    if (log.isTraceEnabled()) {
+      for (DataObject dataObject : dataObjects) {
+        Reference reference = dataObject.getReference();
+        InputStream digestInputStream = reference.getDigestInputStream();
+        if (digestInputStream != null) {
+          String mimeType = dataObject.getMimeType();
+          StringBuilder sb = new StringBuilder();
+          sb.append("DigestInput for Reference with id='");
+          sb.append(reference.getId());
+          sb.append("' (MIME-Type=");
+          sb.append(dataObject.getMimeType());
+          sb.append("):\n");
+          try {
+            if (mimeType != null && (
+                mimeType.startsWith("text") ||
+                "application/xhtml+xml".equals(mimeType))) {
+              byte[] b = new byte[512];
+              for (int l; (l = digestInputStream.read(b)) != -1;) {
+                sb.append(new String(b, 0, l));
+              }
+            } else {
+              sb.append(HexDump.hexDump(digestInputStream));
+            }
+          } catch (IOException e) {
+            log.error(e);
+          }
+          log.trace(sb.toString());
+        } else {
+          log.trace("Reference caching is not enabled.");
+        }
+      }
+    }
+    
+  }
+
+  /**
+   * Sign this Signature using the given <code>stal</code> implementation and
+   * <code>keyboxIdentifier</code>.
+   * <p>
+   * This method configures an appropriate {@link DOMSignContext} and calls
+   * {@link #sign(DOMSignContext)}. If {@link #buildXMLSignature()} has not been
+   * called yet, it is called by this method.
+   * </p>
+   * 
+   * @param stal
+   *          the STAL implementation to use
+   * @param keyboxIdentifier
+   *          the KeyboxIdentifier to use
+   * 
+   * @throws MarshalException
+   *           if marshalling this Signature fails
+   * @throws XMLSignatureException
+   *           if signing this Signature fails
+   * @throws SLCommandException
+   *           if building this Signature fails 
+   * @throws NullPointerException
+   *           if <code>stal</code> or <code>keyboxIdentifier</code> is
+   *           <code>null</code>
+   */
+  public void sign(STAL stal, String keyboxIdentifier) throws MarshalException, XMLSignatureException, SLCommandException {
+
+    if (stal == null) {
+      throw new NullPointerException("Argument 'stal' must not be null.");
+    }
+    
+    if (keyboxIdentifier == null) {
+      throw new NullPointerException("Argument 'keyboxIdentifier' must not be null.");
+    }
+    
+    if (xmlSignature == null) {
+      buildXMLSignature();
+    }
+    
+    SignatureMethod signatureMethod = xmlSignature.getSignedInfo().getSignatureMethod();
+    String algorithm = signatureMethod.getAlgorithm();
+    
+    //don't get hashDataInputs (digestInputStreams) now, only once Signature.sign() was called (cf STALSignature.engineSign)
+    PrivateKey privateKey = new STALPrivateKey(stal, algorithm, keyboxIdentifier, dataObjects); // hashDataInputs);
+    
+    DOMSignContext signContext;
+    if (getNextSibling() == null) {
+      signContext = new DOMSignContext(privateKey, getParent());
+    } else {
+      signContext = new DOMSignContext(privateKey, getParent(), getNextSibling());
+    }
+    
+    sign(signContext);
+  }
+  
+//  @Override
+//  public HashDataInput getHashDataInput(final String referenceId) {
+//      final DataObject dataObject = dataObjectReferencIds.get(referenceId);
+//      if (dataObject != null) {
+//          return new HashDataInput() {
+//
+//              InputStream hashDataInput = dataObject.getReference().getDigestInputStream();
+//              
+//                @Override
+//                public String getReferenceId() {
+//                    return referenceId;
+//                }
+//
+//                @Override
+//                public String getMimeType() {
+//                    return dataObject.getMimeType();
+//                }
+//
+//                @Override
+//                public InputStream getHashDataInput() {
+//                    return hashDataInput;
+//                }
+//          };
+//      } 
+//      return null;
+//  }
+
+  /**
+   * Adds the XAdES <code>QualifyingProperties</code> as an
+   * <code>ds:Object</code> and a corresponding <code>ds:Reference</code> to
+   * it's <code>SignedProperties</code> element to this Signature.
+   * 
+   * @param objects
+   *          the list of <code>ds:Objects</code> to add the created
+   *          <code>ds:Object</code> to
+   * @param references
+   *          the list of <code>ds:References</code> to add the created
+   *          <code>ds:Reference</code> to
+   * 
+   * @throws SLCommandException
+   *           if creating and adding the XAdES
+   *           <code>QualifyingProperties</code> fails
+   * @throws NullPointerException
+   *           if <code>objects</code> or <code>references</code> is
+   *           <code>null</code>
+   */
+  private void addXAdESObjectAndReference(List<XMLObject> objects, List<Reference> references) throws SLCommandException {
+    
+    QualifyingPropertiesFactory factory = QualifyingPropertiesFactory.getInstance();
+    
+    String idValue = ctx.getIdValueFactory().createIdValue("SignedProperties");
+    
+    Date date = (signingTime != null) ? signingTime : new Date();
+    
+    List<X509Certificate> signingCertificates;
+    if (signerCertificate != null) {
+      signingCertificates = Collections.singletonList(signerCertificate);
+    } else {
+      signingCertificates = Collections.emptyList();
+    }
+    
+    // TODO: report MOA-SP bug
+    //
+    // The security layer specification mandates the use of version 1.2.2. of the
+    // XAdES QualifyingProperties. However MOA-SP supports only version 1.1.1. Therefore,
+    // the version 1.1.1 is used in order to be compatible with current MOA-SP versions.
+    
+    List<DataObjectFormatType> dataObjectFormats = new ArrayList<DataObjectFormatType>();
+    for (DataObject dataObject : dataObjects) {
+      if (dataObject.getMimeType() != null && dataObject.getReference() != null) {
+        Reference reference = dataObject.getReference();
+        if (reference.getId() != null) {
+          String objectReference = "#" + reference.getId();
+          dataObjectFormats.add(factory.createDataObjectFormatType(
+              objectReference, dataObject.getMimeType(), dataObject
+                  .getDescription()));
+        }
+      }
+    }
+    
+    JAXBElement<QualifyingPropertiesType> qualifyingProperties;
+    try {
+      qualifyingProperties = factory.createQualifyingProperties111(date, signingCertificates, idValue, dataObjectFormats);
+    } catch (QualifyingPropertiesException e) {
+      log.error("Failed to create QualifyingProperties.", e);
+      throw new SLCommandException(4000);
+    }
+    
+    DocumentFragment fragment = ctx.getDocument().createDocumentFragment();
+    
+    try {
+      factory.marshallQualifyingProperties(qualifyingProperties, fragment);
+    } catch (JAXBException e) {
+      log.error("Failed to marshal QualifyingProperties.", e);
+      throw new SLCommandException(4000);
+    }
+    
+    List<DOMStructure> content = Collections.singletonList(new DOMStructure(fragment.getFirstChild()));
+    
+    String objectIdValue = ctx.getIdValueFactory().createIdValue("Object");
+    
+    XMLObject object = ctx.getSignatureFactory().newXMLObject(content, objectIdValue, null, null);
+    
+    objects.add(object);
+
+    // TODO: Report MOA-SP Bug
+    //
+    // Direct referencing of the SignedPorperties Id-attribute is not supported by MOA-SP
+    // because the QualifyingProperties are parsed without the XAdES schema. Therefore,
+    // the shorthand XPointer could not be resolved.
+    //
+    // The following workaround uses an XPointer to select the SignedProperties in order
+    // to allow the signature to be verified with MOA-SP.
+    
+    String referenceURI = "#xmlns(xades=http://uri.etsi.org/01903/v1.1.1%23)%20xpointer(id('"
+        + objectIdValue
+        + "')/child::xades:QualifyingProperties/child::xades:SignedProperties)";
+    DigestMethod dm;
+    try {
+      dm = ctx.getAlgorithmMethodFactory().createDigestMethod(ctx);
+    } catch (NoSuchAlgorithmException e) {
+      log.error("Failed to get DigestMethod algorithm.", e);
+      throw new SLCommandException(4006);
+    } catch (InvalidAlgorithmParameterException e) {
+      log.error("Failed to get DigestMethod algorithm.", e);
+      throw new SLCommandException(4006);
+    }
+    
+    String referenceIdValue = ctx.getIdValueFactory().createIdValue("Reference");
+    String referenceType = QualifyingPropertiesFactory.SIGNED_PROPERTIES_REFERENCE_TYPE_V1_1_1;
+    
+    Reference reference = ctx.getSignatureFactory().newReference(referenceURI, dm, null, referenceType, referenceIdValue);
+    
+    references.add(reference);
+    
+    Node child = fragment.getFirstChild();
+    if (child instanceof Element) {
+      NodeList nodes = ((Element) child).getElementsByTagNameNS(QualifyingPropertiesFactory.NS_URI_V1_1_1, "SignedProperties");
+      if (nodes.getLength() > 0) {
+        IdAttribute idAttribute = new IdAttribute();
+        idAttribute.element = (Element) nodes.item(0);
+        idAttribute.namespaceURI = null;
+        idAttribute.localName = "Id";
+        idAttributes.add(idAttribute);
+      }
+    }
+    
+  }
+
+  /**
+   * Parse the SignatureEnvironment.
+   * 
+   * @param signatureEnvironment
+   *          the <code>SignatureEnvironment</code> element
+   * @param supplements
+   *          an optional list of <code>Supplements</code> (may be
+   *          <code>null</code>)
+   * 
+   * @return the parsed SignatureEnvironment document
+   * 
+   * @throws SLCommandException
+   *           if parsing the SignatureEnvironment fails
+   * @throws NullPointerException
+   *           if <code>signatureEnvironment</code> is <code>null</code>
+   */
+  private Document parseSignatureEnvironment(
+      Base64XMLOptRefContentType signatureEnvironment,
+      List<DataObjectAssociationType> supplements) throws SLCommandException {
+
+    if (signatureEnvironment == null) {
+      throw new NullPointerException("Argument 'signatureEnvironment' must not be null.");
+    }
+    
+    LSInput input;
+    try {
+      if (signatureEnvironment.getReference() != null) {
+        log.debug("SignatureEnvironment contains Reference " + signatureEnvironment.getReference() + ".");
+        input = createLSInput(signatureEnvironment.getReference());
+      } else if (signatureEnvironment.getBase64Content() != null) {
+        log.debug("SignatureEnvironment contains Base64Content.");
+        input = createLSInput(signatureEnvironment.getBase64Content());
+      } else if (signatureEnvironment.getXMLContent() != null) {
+        log.debug("SignatureEnvironment contains XMLContent.");
+        input = createLSInput((XMLContentType) signatureEnvironment.getXMLContent());
+      } else {
+        // the schema does not allow us to reach this point
+        throw new SLCommandException(4000);
+      }
+    } catch (IOException e) {
+      log.info("XML document in which the signature is to be integrated cannot be resolved.", e);
+      throw new SLCommandException(4100);
+    } catch (XMLStreamException e) {
+      log.info("XML document in which the signature is to be integrated cannot be resolved.", e);
+      throw new SLCommandException(4100);
+    }
+    
+    LSParser parser = domImplLS.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, null);
+    DOMConfiguration domConfig = parser.getDomConfig();
+    SimpleDOMErrorHandler errorHandler = new SimpleDOMErrorHandler();
+    domConfig.setParameter("error-handler", errorHandler);
+    LSResourceResolverAdapter resourceResolver = new LSResourceResolverAdapter(supplements);
+    domConfig.setParameter("resource-resolver", resourceResolver);
+    domConfig.setParameter("validate", Boolean.TRUE);
+
+    Document doc;
+    try {
+      doc = parser.parse(input);
+    } catch (DOMException e) {
+      log.info("XML document in which the signature is to be integrated cannot be parsed.", e);
+      throw new SLCommandException(4101);
+    } catch (LSException e) {
+      log.info("XML document in which the signature is to be integrated cannot be parsed.", e);
+      throw new SLCommandException(4101);
+    }
+    
+    if (resourceResolver.getError() != null) {
+      log.info("Failed to resolve resource while parsing SignatureEnvironment document.", resourceResolver.getError());
+      // we don't stop here, as we only _try_ to parse validating
+    }
+    
+    if (errorHandler.hasFatalErrors()) {
+      // log fatal errors
+      if (log.isInfoEnabled()) {
+        List<String> errorMessages = errorHandler.getErrorMessages();
+        StringBuffer sb = new StringBuffer();
+        for (String errorMessage : errorMessages) {
+          sb.append(" ");
+          sb.append(errorMessage);
+        }
+        log.info("XML document in which the signature is to be integrated cannot be parsed." + sb.toString());
+      }
+      throw new SLCommandException(4101);
+    }
+
+    // log parsed document
+    if (log.isTraceEnabled()) {
+      
+      StringWriter writer = new StringWriter();
+      
+      writer.write("SignatureEnvironment:\n");
+      
+      LSOutput output = domImplLS.createLSOutput();
+      output.setCharacterStream(writer);
+      output.setEncoding("UTF-8");
+      LSSerializer serializer = domImplLS.createLSSerializer();
+      serializer.write(doc, output);
+      
+      log.trace(writer.toString());
+    }
+
+    return doc;
+    
+  }
+
+  /**
+   * Creates an LSInput from the given <code>reference</code> URI.
+   * 
+   * @param reference
+   *          the reference URL
+   * 
+   * @return an LSInput from the given <code>reference</code> URI
+   * 
+   * @throws IOException
+   *           if dereferencing the given <code>reference</code> fails
+   */
+  private LSInput createLSInput(String reference) throws IOException {
+    
+    URLDereferencer urlDereferencer = URLDereferencer.getInstance();
+    StreamData streamData = urlDereferencer.dereference(reference, ctx.getDereferencerContext());
+
+    String contentType = streamData.getContentType();
+    String charset = HttpUtil.getCharset(contentType, true);
+    InputStreamReader streamReader;
+    try {
+      streamReader = new InputStreamReader(streamData.getStream(), charset);
+    } catch (UnsupportedEncodingException e) {
+      log.info("Charset " + charset + " not supported. Using default.");
+      streamReader = new InputStreamReader(streamData.getStream());
+    }
+
+    LSInput input = domImplLS.createLSInput();
+    input = domImplLS.createLSInput();
+    input.setCharacterStream(streamReader);
+    
+    return input;
+    
+  }
+
+  /**
+   * Creates an LSInput from the given <code>content</code> bytes.
+   * 
+   * @param content
+   *          the content bytes
+   * 
+   * @return an LSInput from the givne <code>content</code> bytes
+   */
+  private LSInput createLSInput(byte[] content) {
+    
+    ByteArrayInputStream inputStream = new ByteArrayInputStream(content);
+    LSInput input = domImplLS.createLSInput();
+    input.setByteStream(inputStream);
+
+    return input;
+    
+  }
+
+  /**
+   * Creates an LSInput from the given XML <code>content</code>.
+   * 
+   * @param content
+   *          the XML content
+   * @return an LSInput from the given XML <code>content</code>
+   * 
+   * @throws XMLStreamException
+   *           if reading the XMLStream from the given XML content fails
+   */
+  private LSInput createLSInput(XMLContentType content) throws XMLStreamException {
+
+    ByteArrayOutputStream redirectedStream = content.getRedirectedStream();
+    if (redirectedStream != null) {
+      LSInput input = domImplLS.createLSInput();
+      input.setByteStream(new ByteArrayInputStream(redirectedStream.toByteArray()));
+      return input;
+    } else {
+      return null;
+    }
+    
+  }
+  
+  /**
+   * Represents an <code>xsd:Id</code>-attribute value.
+   * 
+   * @author mcentner
+   */
+  private class IdAttribute {
+    
+    private Element element;
+    
+    private String namespaceURI;
+    
+    private String localName;
+    
+  }
+  
+  /**
+   * An implementation of the LSResourceResolver that uses a list of supplements
+   * to resolve resources.
+   * 
+   * @author mcentner
+   */
+  private class LSResourceResolverAdapter implements LSResourceResolver {
+    
+    List<DataObjectAssociationType> supplements;
+    
+    private LSResourceResolverAdapter(
+        List<DataObjectAssociationType> supplements) {
+      this.supplements = supplements;
+    }
+  
+    private Exception error;
+    
+    /**
+     * @return the error
+     */
+    public Exception getError() {
+      return error;
+    }
+  
+    @Override
+    public LSInput resolveResource(String type, String namespaceURI,
+        String publicId, String systemId, String baseURI) {
+  
+      if (log.isTraceEnabled()) {
+        log.trace("Resolve resource :" +
+            "\n  type=" + type +
+            "\n  namespaceURI=" + namespaceURI +
+            "\n  publicId=" + publicId +
+            "\n  systemId=" + systemId +
+            "\n  baseURI=" + baseURI);
+      }
+  
+      if (systemId != null) {
+
+        log.debug("Resolve resource '" + systemId + "'.");
+        
+        for (DataObjectAssociationType supplement : supplements) {
+          
+          Base64XMLLocRefReqRefContentType content = supplement.getContent();
+          if (content != null) {
+  
+            String reference = content.getReference();
+            if (systemId.equals(reference)) {
+              
+              try {
+                if (content.getLocRefContent() != null) {
+                  log.trace("Resolved resource '" + reference + "' to supplement with LocRefContent.");
+                  return createLSInput(content.getLocRefContent());
+                } else if (content.getBase64Content() != null) {
+                  log.trace("Resolved resource '" + reference + "' to supplement with Base64Content.");
+                  return createLSInput(content.getBase64Content());
+                } else if (content.getXMLContent() != null) {
+                  log.trace("Resolved resource '" + reference + "' to supplement with XMLContent.");
+                  return createLSInput((XMLContentType) content.getXMLContent());
+                } else {
+                  return null;
+                }
+              } catch (IOException e) {
+                log.info("Failed to resolve resource '" + systemId + "' to supplement.", e);
+                error = e;
+                return null;
+              } catch (XMLStreamException e) {
+                log.info("Failed to resolve resource '" + systemId + "' to supplement.", e);
+                error = e;
+                return null;
+              }
+              
+            }
+  
+          }
+          
+        }
+
+        log.info("Failed to resolve resource '" + systemId + "' to supplement. No such supplement.");
+        
+      }
+  
+      return null;
+      
+    }
+    
+    
+  }
+
+}