Implement CreateCMSSignatureRequest

git-svn-id: https://joinup.ec.europa.eu/svn/mocca/trunk@1234 8a26b1a7-26f0-462f-b9ef-d0e30c41f5a4

8 files changed, 793 insertions, 0 deletions

diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/CreateCMSSignatureCommand.java b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/CreateCMSSignatureCommand.java
new file mode 100644
index 00000000..a68c0125
--- /dev/null
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/CreateCMSSignatureCommand.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2013 by Graz University of Technology, Austria
+ * MOCCA has been developed by the E-Government Innovation Center EGIZ, a joint
+ * initiative of the Federal Chancellery Austria and Graz University of Technology.
+ *
+ * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
+ * the European Commission - subsequent versions of the EUPL (the "Licence");
+ * You may not use this work except in compliance with the Licence.
+ * You may obtain a copy of the Licence at:
+ * http://www.osor.eu/eupl/
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the Licence is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
+ *
+ * This product combines work with different licenses. See the "NOTICE" text
+ * file for details on the various modules and licenses.
+ * The "NOTICE" text file is part of the distribution. Any derivative works
+ * that you distribute must include a readable copy of the "NOTICE" text file.
+ */
+
+
+package at.gv.egiz.bku.slcommands;
+
+import at.gv.egiz.bku.slexceptions.SLCommandException;
+import at.gv.egiz.bku.slexceptions.SLRequestException;
+
+public interface CreateCMSSignatureCommand extends SLCommand {
+
+  public void prepareCMSSignature(SLCommandContext commandContext) throws SLCommandException, SLRequestException;
+
+}
diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/CreateCMSSignatureResult.java b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/CreateCMSSignatureResult.java
new file mode 100644
index 00000000..8f215843
--- /dev/null
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/CreateCMSSignatureResult.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2013 by Graz University of Technology, Austria
+ * MOCCA has been developed by the E-Government Innovation Center EGIZ, a joint
+ * initiative of the Federal Chancellery Austria and Graz University of Technology.
+ *
+ * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
+ * the European Commission - subsequent versions of the EUPL (the "Licence");
+ * You may not use this work except in compliance with the Licence.
+ * You may obtain a copy of the Licence at:
+ * http://www.osor.eu/eupl/
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the Licence is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
+ *
+ * This product combines work with different licenses. See the "NOTICE" text
+ * file for details on the various modules and licenses.
+ * The "NOTICE" text file is part of the distribution. Any derivative works
+ * that you distribute must include a readable copy of the "NOTICE" text file.
+ */
+
+
+package at.gv.egiz.bku.slcommands;
+
+import org.w3c.dom.Element;
+
+public interface CreateCMSSignatureResult extends SLResult {
+
+  public Element getContent();
+
+}
diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/CreateCMSSignatureCommandFactory.java b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/CreateCMSSignatureCommandFactory.java
new file mode 100644
index 00000000..2a642f95
--- /dev/null
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/CreateCMSSignatureCommandFactory.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2011 by Graz University of Technology, Austria
+ * MOCCA has been developed by the E-Government Innovation Center EGIZ, a joint
+ * initiative of the Federal Chancellery Austria and Graz University of Technology.
+ *
+ * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
+ * the European Commission - subsequent versions of the EUPL (the "Licence");
+ * You may not use this work except in compliance with the Licence.
+ * You may obtain a copy of the Licence at:
+ * http://www.osor.eu/eupl/
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the Licence is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
+ *
+ * This product combines work with different licenses. See the "NOTICE" text
+ * file for details on the various modules and licenses.
+ * The "NOTICE" text file is part of the distribution. Any derivative works
+ * that you distribute must include a readable copy of the "NOTICE" text file.
+ */
+
+
+
+package at.gv.egiz.bku.slcommands.impl;
+
+import javax.xml.bind.JAXBElement;
+
+import at.gv.egiz.bku.slcommands.AbstractSLCommandFactory;
+import at.gv.egiz.bku.slcommands.SLCommand;
+import at.gv.egiz.bku.slexceptions.SLCommandException;
+
+public class CreateCMSSignatureCommandFactory extends AbstractSLCommandFactory {
+
+  @Override
+  public SLCommand createSLCommand(JAXBElement<?> element) throws SLCommandException {
+    CreateCMSSignatureCommandImpl command = new CreateCMSSignatureCommandImpl();
+    command.init(element);
+    command.setConfiguration(configuration);
+    return command;
+  }
+}
diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/CreateCMSSignatureCommandImpl.java b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/CreateCMSSignatureCommandImpl.java
new file mode 100644
index 00000000..4825351b
--- /dev/null
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/CreateCMSSignatureCommandImpl.java
@@ -0,0 +1,201 @@
+/*
+ * Copyright 2013 by Graz University of Technology, Austria
+ * MOCCA has been developed by the E-Government Innovation Center EGIZ, a joint
+ * initiative of the Federal Chancellery Austria and Graz University of Technology.
+ *
+ * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
+ * the European Commission - subsequent versions of the EUPL (the "Licence");
+ * You may not use this work except in compliance with the Licence.
+ * You may obtain a copy of the Licence at:
+ * http://www.osor.eu/eupl/
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the Licence is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
+ *
+ * This product combines work with different licenses. See the "NOTICE" text
+ * file for details on the various modules and licenses.
+ * The "NOTICE" text file is part of the distribution. Any derivative works
+ * that you distribute must include a readable copy of the "NOTICE" text file.
+ */
+
+
+package at.gv.egiz.bku.slcommands.impl;
+
+import iaik.cms.CMSException;
+
+import java.security.cert.X509Certificate;
+import java.util.Collections;
+import java.util.Date;
+import java.util.List;
+
+import org.apache.commons.configuration.Configuration;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import at.buergerkarte.namespaces.securitylayer._1_2_3.CreateCMSSignatureRequestType;
+import at.gv.egiz.bku.conf.MoccaConfigurationFacade;
+import at.gv.egiz.bku.slcommands.CreateCMSSignatureCommand;
+import at.gv.egiz.bku.slcommands.SLCommandContext;
+import at.gv.egiz.bku.slcommands.SLResult;
+import at.gv.egiz.bku.slcommands.impl.cms.Signature;
+import at.gv.egiz.bku.slexceptions.SLCommandException;
+import at.gv.egiz.bku.slexceptions.SLException;
+import at.gv.egiz.bku.slexceptions.SLRequestException;
+import at.gv.egiz.bku.slexceptions.SLViewerException;
+import at.gv.egiz.stal.InfoboxReadRequest;
+import at.gv.egiz.stal.STALRequest;
+
+/**
+ * This class implements the security layer command
+ * <code>CreateCMSSignatureRequest</code>.
+ * 
+ * @author tkellner
+ */
+public class CreateCMSSignatureCommandImpl extends
+    SLCommandImpl<CreateCMSSignatureRequestType> implements
+    CreateCMSSignatureCommand {
+
+  /**
+   * Logging facility.
+   */
+  private final Logger log = LoggerFactory.getLogger(CreateCMSSignatureCommandImpl.class);
+
+  /**
+   * The signing certificate.
+   */
+  protected X509Certificate signingCertificate;
+
+  /**
+   * The keybox identifier of the key used for signing.
+   */
+  protected String keyboxIdentifier;
+
+  /**
+   * The to-be signed signature.
+   */
+  protected Signature signature;
+
+  /**
+   * The configuration facade used to access the MOCCA configuration.
+   */
+  private ConfigurationFacade configurationFacade = new ConfigurationFacade();
+
+  private class ConfigurationFacade implements MoccaConfigurationFacade {
+    private Configuration configuration;
+
+    public static final String USE_STRONG_HASH = "UseStrongHash";
+
+    public void setConfiguration(Configuration configuration) {
+        this.configuration = configuration;
+    }
+
+    public boolean getUseStrongHash() {
+        return configuration.getBoolean(USE_STRONG_HASH, true);
+    }
+}
+
+  public void setConfiguration(Configuration configuration) {
+    configurationFacade.setConfiguration(configuration);
+  }
+
+  @Override
+  public void prepareCMSSignature(SLCommandContext commandContext) throws SLCommandException,
+      SLRequestException {
+
+    CreateCMSSignatureRequestType request = getRequestValue();
+
+    // DataObject, SigningCertificate, SigningTime
+    Date signingTime = new Date();
+    try {
+      signature = new Signature(request.getDataObject(), signingCertificate,
+          signingTime, configurationFacade.getUseStrongHash());
+    } catch (Exception e) {
+      log.error("Error creating CMS Signature.", e);
+      throw new SLCommandException(4000);
+    }
+  }
+
+  /**
+   * Gets the signing certificate from STAL.
+   * @param commandContext TODO
+   * 
+   * @throws SLCommandException
+   *           if getting the singing certificate fails
+   */
+  private void getSigningCertificate(SLCommandContext commandContext) throws SLCommandException {
+
+    CreateCMSSignatureRequestType request = getRequestValue();
+    keyboxIdentifier = request.getKeyboxIdentifier();
+
+    InfoboxReadRequest stalRequest = new InfoboxReadRequest();
+    stalRequest.setInfoboxIdentifier(keyboxIdentifier);
+
+    STALHelper stalHelper = new STALHelper(commandContext.getSTAL());
+
+    stalHelper.transmitSTALRequest(Collections.singletonList((STALRequest) stalRequest));
+    List<X509Certificate> certificates = stalHelper.getCertificatesFromResponses();
+    if (certificates == null || certificates.size() != 1) {
+      log.info("Got an unexpected number of certificates from STAL.");
+      throw new SLCommandException(4000);
+    }
+    signingCertificate = certificates.get(0);
+
+  }
+
+  /**
+   * Signs the signature.
+   * @param commandContext TODO
+   * @return the CMS signature
+   * @throws SLCommandException
+   *           if signing the signature fails
+   * @throws SLViewerException
+   */
+  private byte[] signCMSSignature(SLCommandContext commandContext) throws SLCommandException, SLViewerException {
+
+    try {
+      return signature.sign(commandContext.getSTAL(), keyboxIdentifier);
+    } catch (CMSException e) {
+      log.error("Error creating CMSSignature", e);
+      throw new SLCommandException(4000);
+    }
+  }
+
+  @Override
+  public SLResult execute(SLCommandContext commandContext) {
+    try {
+
+      // get certificate in order to select appropriate algorithms for hashing
+      // and signing
+      log.info("Requesting signing certificate.");
+      getSigningCertificate(commandContext);
+      if (log.isDebugEnabled()) {
+        log.debug("Got signing certificate. {}", signingCertificate);
+      } else {
+        log.info("Got signing certificate.");
+      }
+
+      // prepare the CMSSignature for signing
+      log.info("Preparing CMS signature.");
+      prepareCMSSignature(commandContext);
+
+      // sign the CMSSignature
+      log.info("Signing CMS signature.");
+      byte[] sig = signCMSSignature(commandContext);
+      log.info("CMS signature signed.");
+
+      return new CreateCMSSignatureResultImpl(sig);
+
+    } catch (SLException e) {
+      return new ErrorResultImpl(e, commandContext.getLocale());
+    }
+  }
+
+  @Override
+  public String getName() {
+    return "CreateCMSSignatureRequest";
+  }
+
+}
diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/CreateCMSSignatureResultImpl.java b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/CreateCMSSignatureResultImpl.java
new file mode 100644
index 00000000..66b24a82
--- /dev/null
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/CreateCMSSignatureResultImpl.java
@@ -0,0 +1,117 @@
+/*
+ * Copyright 2011 by Graz University of Technology, Austria
+ * MOCCA has been developed by the E-Government Innovation Center EGIZ, a joint
+ * initiative of the Federal Chancellery Austria and Graz University of Technology.
+ *
+ * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
+ * the European Commission - subsequent versions of the EUPL (the "Licence");
+ * You may not use this work except in compliance with the Licence.
+ * You may obtain a copy of the Licence at:
+ * http://www.osor.eu/eupl/
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the Licence is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
+ *
+ * This product combines work with different licenses. See the "NOTICE" text
+ * file for details on the various modules and licenses.
+ * The "NOTICE" text file is part of the distribution. Any derivative works
+ * that you distribute must include a readable copy of the "NOTICE" text file.
+ */
+
+
+package at.gv.egiz.bku.slcommands.impl;
+
+import javax.xml.bind.JAXBElement;
+import javax.xml.bind.JAXBException;
+import javax.xml.bind.Marshaller;
+import javax.xml.transform.Result;
+import javax.xml.transform.Templates;
+import javax.xml.transform.dom.DOMResult;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+
+import at.buergerkarte.namespaces.securitylayer._1_2_3.CreateCMSSignatureResponseType;
+import at.buergerkarte.namespaces.securitylayer._1_2_3.ObjectFactory;
+import at.gv.egiz.bku.slcommands.CreateCMSSignatureResult;
+import at.gv.egiz.bku.slcommands.SLMarshallerFactory;
+import at.gv.egiz.bku.slexceptions.SLRuntimeException;
+
+/**
+ * This implements the result of the security layer command <code>CreateCMSSignature</code>.
+ * 
+ * @author tkellner
+ */
+public class CreateCMSSignatureResultImpl extends SLResultImpl implements CreateCMSSignatureResult {
+
+  /**
+   * Logging facility.
+   */
+  private final Logger log = LoggerFactory.getLogger(CreateCMSSignatureResultImpl.class);
+
+  /**
+   * The CMSSignature data.
+   */
+  protected byte[] signature;
+
+  /**
+   * The CMSSignatureResponse.
+   */
+  private Element content;
+
+  /**
+   * Creates a new instance of this CreateCMSSignatureResultImpl with the given
+   * signature <code>signature</code>.
+   * 
+   * @param document the signature document
+   * 
+   * @throws NullPointerException if <code>document</code> is <code>null</code>
+   */
+  public CreateCMSSignatureResultImpl(byte[] signature) {
+    super();
+
+    if (signature == null)
+      throw new NullPointerException("Argument 'signature' must not be null.");
+    this.signature = signature;
+
+    marshallCreateCMSSignatureResponse();
+  }
+
+  /**
+   * Marshalls the <code>CreateCMSSignatureResponse</code>.
+   */
+  private void marshallCreateCMSSignatureResponse() {
+
+    ObjectFactory factory = new ObjectFactory();
+
+    CreateCMSSignatureResponseType createCreateCMSSignatureResponseType = factory.createCreateCMSSignatureResponseType();
+    createCreateCMSSignatureResponseType.setCMSSignature(signature);
+    JAXBElement<CreateCMSSignatureResponseType> createCreateCMSSignatureResponse = factory.createCreateCMSSignatureResponse(createCreateCMSSignatureResponseType);
+
+    DOMResult res = new DOMResult();
+
+    Marshaller marshaller = SLMarshallerFactory.getInstance().createMarshaller(false);
+    try {
+      marshaller.marshal(createCreateCMSSignatureResponse, res);
+    } catch (JAXBException e) {
+      log.error("Failed to marshall 'CreateCMSSignatureResponse'.", e);
+      throw new SLRuntimeException(e);
+    }
+    content = ((Document)res.getNode()).getDocumentElement();
+  }
+
+  @Override
+  public void writeTo(Result result, Templates templates, boolean fragment) {
+    writeTo(content, result, templates, fragment);
+  }
+
+  @Override
+  public Element getContent() {
+    return content;
+  }
+}
diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/cms/STALPrivateKey.java b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/cms/STALPrivateKey.java
new file mode 100644
index 00000000..8da52227
--- /dev/null
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/cms/STALPrivateKey.java
@@ -0,0 +1,34 @@
+package at.gv.egiz.bku.slcommands.impl.cms;
+
+import java.security.PrivateKey;
+
+/**
+ * Dummy PrivateKey implementation for CMS signing using STAL
+ * @author tkellner
+ */
+public class STALPrivateKey implements PrivateKey {
+
+  private static final long serialVersionUID = 1L;
+
+  private String algorithm;
+
+  public STALPrivateKey(String algorithm) {
+    this.algorithm = algorithm;
+  }
+
+  @Override
+  public String getAlgorithm() {
+    return algorithm;
+  }
+
+  @Override
+  public byte[] getEncoded() {
+    throw new UnsupportedOperationException("STALPrivateKey does not support the getEncoded() method.");
+  }
+
+  @Override
+  public String getFormat() {
+    return null;
+  }
+
+}
diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/cms/STALSecurityProvider.java b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/cms/STALSecurityProvider.java
new file mode 100644
index 00000000..437d29ef
--- /dev/null
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/cms/STALSecurityProvider.java
@@ -0,0 +1,76 @@
+package at.gv.egiz.bku.slcommands.impl.cms;
+
+import iaik.asn1.structures.AlgorithmID;
+import iaik.cms.IaikProvider;
+import iaik.utils.Util;
+
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+import java.security.PrivateKey;
+import java.security.SignatureException;
+import java.util.Collections;
+import java.util.List;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import at.gv.egiz.bku.slcommands.impl.xsect.STALSignatureException;
+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;
+
+public class STALSecurityProvider extends IaikProvider {
+
+  private final Logger log = LoggerFactory.getLogger(STALSecurityProvider.class);
+
+  private String keyboxIdentifier;
+
+  private STAL stal;
+
+  public STALSecurityProvider(STAL stal, String keyboxIdentifier) {
+    this.keyboxIdentifier = keyboxIdentifier;
+    this.stal = stal;
+  }
+
+  /* (non-Javadoc)
+   * @see iaik.cms.IaikProvider#calculateSignatureFromSignedAttributes(iaik.asn1.structures.AlgorithmID, iaik.asn1.structures.AlgorithmID, java.security.PrivateKey, byte[])
+   */
+  @Override
+  public byte[] calculateSignatureFromSignedAttributes(AlgorithmID signatureAlgorithm,
+      AlgorithmID digestAlgorithm, PrivateKey privateKey,
+      byte[] signedAttributes)
+      throws SignatureException, InvalidKeyException, NoSuchAlgorithmException {
+    log.debug("calculateSignatureFromSignedAttributes: " + signatureAlgorithm + ", " + digestAlgorithm);
+
+    SignRequest signRequest = new SignRequest();
+    signRequest.setKeyIdentifier(keyboxIdentifier);
+    log.debug("SignedAttributes: " + Util.toBase64String(signedAttributes));
+    signRequest.setSignedInfo(signedAttributes);
+    signRequest.setSignedInfoIsRawData(true);
+    signRequest.setSignatureMethod(privateKey.getAlgorithm());
+
+    log.debug("Sending STAL request");
+    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) {
+      log.debug("Got STAL response: " + Util.toBase64String(((SignResponse) response).getSignatureValue()));
+      return ((SignResponse) response).getSignatureValue();
+    } else if (response instanceof ErrorResponse) {
+      ErrorResponse err = (ErrorResponse) response;
+      STALSignatureException se = new STALSignatureException(err.getErrorCode(), err.getErrorMessage());
+      throw new SignatureException(se);
+    } else {
+      throw new SignatureException("Failed to access STAL.");
+    }
+  }
+
+}
diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/cms/Signature.java b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/cms/Signature.java
new file mode 100644
index 00000000..9f97e363
--- /dev/null
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/cms/Signature.java
@@ -0,0 +1,255 @@
+/*
+ * Copyright 2013 by Graz University of Technology, Austria
+ * MOCCA has been developed by the E-Government Innovation Center EGIZ, a joint
+ * initiative of the Federal Chancellery Austria and Graz University of Technology.
+ *
+ * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
+ * the European Commission - subsequent versions of the EUPL (the "Licence");
+ * You may not use this work except in compliance with the Licence.
+ * You may obtain a copy of the Licence at:
+ * http://www.osor.eu/eupl/
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the Licence is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
+ *
+ * This product combines work with different licenses. See the "NOTICE" text
+ * file for details on the various modules and licenses.
+ * The "NOTICE" text file is part of the distribution. Any derivative works
+ * that you distribute must include a readable copy of the "NOTICE" text file.
+ */
+
+
+package at.gv.egiz.bku.slcommands.impl.cms;
+
+import iaik.asn1.ASN1Object;
+import iaik.asn1.CodingException;
+import iaik.asn1.ObjectID;
+import iaik.asn1.SEQUENCE;
+import iaik.asn1.UTF8String;
+import iaik.asn1.structures.AlgorithmID;
+import iaik.asn1.structures.Attribute;
+import iaik.asn1.structures.ChoiceOfTime;
+import iaik.cms.CMSException;
+import iaik.cms.CertificateIdentifier;
+import iaik.cms.ContentInfo;
+import iaik.cms.IssuerAndSerialNumber;
+import iaik.cms.SignedData;
+import iaik.cms.SignerInfo;
+import iaik.security.ecc.interfaces.ECDSAParams;
+import iaik.smime.ess.ESSCertID;
+import iaik.smime.ess.ESSCertIDv2;
+import iaik.x509.X509ExtensionException;
+
+import java.security.InvalidParameterException;
+import java.security.NoSuchAlgorithmException;
+import java.security.PrivateKey;
+import java.security.PublicKey;
+import java.security.cert.CertificateEncodingException;
+import java.security.cert.CertificateException;
+import java.security.cert.X509Certificate;
+import java.security.interfaces.ECPublicKey;
+import java.security.interfaces.RSAPublicKey;
+import java.security.spec.ECParameterSpec;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.List;
+
+import org.apache.commons.lang.ArrayUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import at.buergerkarte.namespaces.securitylayer._1_2_3.CMSDataObjectRequiredMetaType;
+import at.buergerkarte.namespaces.securitylayer._1_2_3.ExcludedByteRangeType;
+import at.gv.egiz.bku.slcommands.impl.xsect.AlgorithmMethodFactory;
+import at.gv.egiz.bku.slcommands.impl.xsect.AlgorithmMethodFactoryImpl;
+import at.gv.egiz.stal.STAL;
+
+/**
+ * This class represents a CMS-Signature as to be created by the
+ * security layer command <code>CreateCMSSignatureRequest</code>.
+ * 
+ * @author tkellner
+ */
+public class Signature {
+  /**
+   * Logging facility.
+   */
+  private final Logger log = LoggerFactory.getLogger(Signature.class);
+
+  private SignedData signedData;
+  private SignerInfo signerInfo;
+  private AlgorithmID signatureAlgorithm;
+  private AlgorithmID digestAlgorithm;
+  private String signatureAlgorithmURI;
+  @SuppressWarnings("unused")
+  private String digestAlgorithmURI;
+
+  public Signature(CMSDataObjectRequiredMetaType dataObject,
+      X509Certificate signingCertificate, Date signingTime, boolean useStrongHash) throws NoSuchAlgorithmException, CertificateEncodingException, CertificateException, X509ExtensionException, InvalidParameterException, CodingException {
+    byte[] data = getContent(dataObject);
+    this.signedData = new SignedData(data, SignedData.EXPLICIT);
+    setAlgorithmIDs(signingCertificate, useStrongHash);
+    createSignerInfo(signingCertificate);
+    setSignerCertificate(signingCertificate);
+    setAttributes(dataObject.getMetaInfo().getMimeType(), signingCertificate, signingTime);
+  }
+
+  private void createSignerInfo(X509Certificate signingCertificate) throws CertificateEncodingException, CertificateException {
+    iaik.x509.X509Certificate sigcert =
+        new iaik.x509.X509Certificate(signingCertificate.getEncoded());
+    CertificateIdentifier signerIdentifier =
+        new IssuerAndSerialNumber(sigcert);
+    PrivateKey privateKey = new STALPrivateKey(signatureAlgorithmURI);
+    signerInfo = new SignerInfo(signerIdentifier, digestAlgorithm,
+        signatureAlgorithm, privateKey);
+  }
+
+  private void setSignerCertificate(X509Certificate signingCertificate) {
+    X509Certificate[] sigcerts = new X509Certificate[] { signingCertificate };
+    signedData.addCertificates(sigcerts);
+  }
+
+  private void setAttributes(String mimeType, X509Certificate signingCertificate, Date signingTime) throws CertificateException, NoSuchAlgorithmException, CodingException {
+    List<Attribute> attributes = new ArrayList<Attribute>();
+    setMimeTypeAttrib(attributes, mimeType);
+    setContentTypeAttrib(attributes);
+    setSigningCertificateAttrib(attributes, signingCertificate);
+    setSigningTimeAttrib(attributes, signingTime);
+    Attribute[] attributeArray = attributes.toArray(new Attribute[attributes.size()]);
+    signerInfo.setSignedAttributes(attributeArray);
+  }
+
+  private void setMimeTypeAttrib(List<Attribute> attributes, String mimeType) {
+    String oidStr = "0.4.0.1733.2.1";
+    String name = "mime-type";
+    ObjectID mimeTypeOID = new ObjectID(oidStr, name);
+
+    Attribute mimeTypeAtt = new Attribute(mimeTypeOID, new ASN1Object[] {new UTF8String(mimeType)});
+    attributes.add(mimeTypeAtt);
+  }
+
+  private void setContentTypeAttrib(List<Attribute> attributes) {
+    Attribute contentType = new Attribute(ObjectID.contentType, new ASN1Object[] {ObjectID.cms_data});
+    attributes.add(contentType);
+  }
+
+  private void setSigningCertificateAttrib(List<Attribute> attributes, X509Certificate signingCertificate) throws CertificateException, NoSuchAlgorithmException, CodingException {
+    ObjectID id;
+    ASN1Object value = new SEQUENCE();
+    if (digestAlgorithm.equals(AlgorithmID.sha1)) {
+      id = ObjectID.signingCertificate;
+      value.addComponent(new ESSCertID(signingCertificate, true).toASN1Object());
+    }
+    else {
+      id = ObjectID.signingCertificateV2;
+      value.addComponent(new ESSCertIDv2(digestAlgorithm, signingCertificate, true).toASN1Object());
+    }
+    ASN1Object signingCert = new SEQUENCE();
+    signingCert.addComponent(value);
+    Attribute signingCertificateAttrib = new Attribute(id, new ASN1Object[] {signingCert});
+    attributes.add(signingCertificateAttrib);
+  }
+
+  private void setSigningTimeAttrib(List<Attribute> attributes, Date date) {
+    Attribute signingTime = new Attribute(ObjectID.signingTime, new ASN1Object[] {new ChoiceOfTime(date).toASN1Object()});
+    attributes.add(signingTime);
+  }
+
+  private byte[] getContent(CMSDataObjectRequiredMetaType dataObject) throws InvalidParameterException {
+    byte[] data = dataObject.getContent().getBase64Content();
+    ExcludedByteRangeType ebr = dataObject.getExcludedByteRange();
+    if (ebr == null)
+      return data;
+
+    int from = dataObject.getExcludedByteRange().getFrom().intValue();
+    int to = dataObject.getExcludedByteRange().getTo().intValue();
+    if (from > data.length || to > data.length || from > to)
+      throw new InvalidParameterException("ExcludeByteRange contains invalid data: [" +
+      from + "-" + to + "], Content length: " + data.length);
+    byte[] first = null;
+    byte[] second = null;
+    if (from > 0)
+      first = Arrays.copyOfRange(data, 0, from);
+    if ((to + 1) < data.length)
+      second = Arrays.copyOfRange(data, to + 1, data.length);
+    data = ArrayUtils.addAll(first, second);
+    log.debug("ExcludeByteRange [" + from + "-" + to + "], Content length: " + data.length);
+    return data;
+  }
+
+  private void setSignerInfo() {
+    try {
+      signedData.addSignerInfo(signerInfo);
+    } catch (NoSuchAlgorithmException e) {
+      log.error("Error setting signer info", e);
+    }
+  }
+
+  private void setAlgorithmIDs(X509Certificate signingCertificate, boolean useStrongHash) throws NoSuchAlgorithmException {
+    PublicKey publicKey = signingCertificate.getPublicKey();
+    String algorithm = publicKey.getAlgorithm();
+    AlgorithmMethodFactory amf = new AlgorithmMethodFactoryImpl(signingCertificate, useStrongHash);
+    signatureAlgorithmURI = amf.getSignatureAlgorithmURI();
+    digestAlgorithmURI = amf.getDigestAlgorithmURI();
+
+    if ("DSA".equals(algorithm)) {
+      signatureAlgorithm = AlgorithmID.dsaWithSHA1;
+    } else if ("RSA".equals(algorithm)) {
+
+      int keyLength = 0;
+      if (publicKey instanceof RSAPublicKey) {
+        keyLength = ((RSAPublicKey) publicKey).getModulus().bitLength();
+      }
+
+      if (useStrongHash && keyLength >= 2048) {
+        signatureAlgorithm = AlgorithmID.sha256WithRSAEncryption;
+        digestAlgorithm = AlgorithmID.sha256;
+      } else if (useStrongHash) {
+        signatureAlgorithm = AlgorithmID.rsaSignatureWithRipemd160;
+        digestAlgorithm = AlgorithmID.ripeMd160;
+      } else {
+        signatureAlgorithm = AlgorithmID.sha1WithRSAEncryption;
+        digestAlgorithm = AlgorithmID.sha1;
+      }
+      
+    } else if (("EC".equals(algorithm)) || ("ECDSA".equals(algorithm))) {
+
+      int fieldSize = 0;
+      if (publicKey instanceof iaik.security.ecc.ecdsa.ECPublicKey) {
+        ECDSAParams params = ((iaik.security.ecc.ecdsa.ECPublicKey) publicKey).getParameter();
+        fieldSize = params.getG().getCurve().getField().getSize().bitLength();
+      } else if (publicKey instanceof ECPublicKey) {
+        ECParameterSpec params = ((ECPublicKey) publicKey).getParams();
+        fieldSize = params.getCurve().getField().getFieldSize();
+      }
+      
+      if (useStrongHash && fieldSize >= 512) {
+        signatureAlgorithm = AlgorithmID.ecdsa_plain_With_SHA512;
+        digestAlgorithm = AlgorithmID.sha512;
+      } else if (useStrongHash && fieldSize >= 256) {
+        signatureAlgorithm = AlgorithmID.ecdsa_plain_With_SHA256;
+        digestAlgorithm = AlgorithmID.sha256;
+      } else if (useStrongHash) {
+          signatureAlgorithm = AlgorithmID.ecdsa_plain_With_RIPEMD160;
+          digestAlgorithm = AlgorithmID.ripeMd160;
+      } else {
+        signatureAlgorithm = AlgorithmID.ecdsa_plain_With_SHA1;
+        digestAlgorithm = AlgorithmID.sha1;
+      }
+    } else {
+      throw new NoSuchAlgorithmException("Public key algorithm '" + algorithm
+          + "' not supported.");
+    }
+  }
+
+  public byte[] sign(STAL stal, String keyboxIdentifier) throws CMSException {
+    signedData.setSecurityProvider(new STALSecurityProvider(stal, keyboxIdentifier));
+    setSignerInfo();
+    ContentInfo contentInfo = new ContentInfo(signedData);
+    return contentInfo.getEncoded();
+  }
+}