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diff --git a/pdf-as-lib/src/main/java/at/knowcenter/wag/egov/egiz/pdf/IncrementalUpdateInformation.java b/pdf-as-lib/src/main/java/at/knowcenter/wag/egov/egiz/pdf/IncrementalUpdateInformation.java
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+/**
+ * <copyright> Copyright 2006 by Know-Center, Graz, Austria </copyright>
+ * PDF-AS has been contracted 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.
+ *
+ * $Id: IncrementalUpdateInformation.java,v 1.2 2006/10/31 08:09:33 wprinz Exp $
+ */
+package at.knowcenter.wag.egov.egiz.pdf;
+
+import java.io.IOException;
+import java.io.Serializable;
+import java.util.List;
+
+import org.apache.log4j.Logger;
+
+import at.gv.egiz.pdfas.api.analyze.NonTextObjectInfo;
+import at.gv.egiz.pdfas.api.timestamp.TimeStamper;
+import at.gv.egiz.pdfas.framework.input.PdfDataSource;
+import at.gv.egiz.pdfas.utils.PdfAUtil;
+import at.knowcenter.wag.egov.egiz.sig.SignatureData;
+import at.knowcenter.wag.egov.egiz.sig.connectors.bku.SignSignatureObject;
+
+import com.lowagie.text.pdf.PdfReader;
+
+/**
+ * This parameter object contains all useful inforamtion the binary incremental
+ * update methods need to create and replace a binary singature block.
+ * 
+ * <p>
+ * This class is basically used to transport information about the document from
+ * the prepareSign to the finishSign of the Signator. In future, this could be
+ * extended and encapsulated to task proprietary IUI instances. E.g. a
+ * BinarySignatorIUI, a TextualSignatorIUI, both implementing the core IUI
+ * interface, but encapsulating Binary or Textual specialities.
+ * </p>
+ * 
+ * @author wprinz
+ */
+public class IncrementalUpdateInformation implements Serializable
+{
+   public static final Logger log = Logger.getLogger(IncrementalUpdateInformation.class);
+   
+  /**
+   * SVUID.
+   */
+  private static final long serialVersionUID = -5904526956127108035L;
+
+  /**
+   * The original PDF document.
+   */
+  //public byte[] original_document = null;
+  public PdfDataSource original_document = null;
+
+  /**
+   * The Singature type to be created.
+   */
+  public String signature_type = null;
+
+  /**
+   * The signed pdf document.
+   * 
+   * <p>
+   * This is the original document plus the incremental update block.
+   * </p>
+   */
+  public byte[] signed_pdf = null;
+  // this is only valid during prepare
+  
+  // holds the variable iui data for bin sigs.
+  public byte [] sign_iui_block = null;
+
+  /**
+   * The start index of this incremental update block.
+   */
+  int start_index = -1;
+
+  /**
+   * The indirect reference of the egiz dict.
+   */
+  // PdfIndirectReference egiz_dict_ir = null;
+  public int egiz_dict_ir_number;
+
+  public int egiz_dict_ir_generation;
+
+  /**
+   * The List of ReplaceInfo objects specifying the byte ranges where the
+   * variable data has to be fille in.
+   */
+  public List replaces = null;
+
+  /**
+   * The List of StringInfo objects specifying the byte ranges that should
+   * be/were signed.
+   */
+  public List byte_ranges = null;
+
+  /**
+   * The indirect reference of the signature x-object.
+   */
+  // public PdfIndirectReference temp_ir;
+  public int temp_ir_number;
+
+  public int temp_ir_generation;
+
+  /**
+   * The start index of the content stream of the signature x-object.
+   */
+  public int content_stream_start = -1;
+
+  /**
+   * The length of the content stream of the signature x-object.
+   */
+  public int content_stream_length = -1;
+
+//  /**
+//   * The document text for signing.
+//   */
+//  public String document_text;
+  /**
+   * The data to be signed or verified.
+   * 
+   * <p>
+   * For text signature this is the document text.
+   * For binary signature this is the PDF document.
+   * </p>
+   */
+  public SignatureData signature_data = null;
+
+  /**
+   * The SignatureObject containing the variable values after the document text
+   * has been signed.
+   * <p>
+   * These values have to be filled in.
+   * </p>
+   */
+  public SignSignatureObject signed_signature_object;
+
+  /**
+   * The start of the /encodings array.
+   */
+  public int enc_start = -1;
+
+  /**
+   * The length of the /encodings array.
+   */
+  public int enc_length = -1;
+
+  /**
+   * The start of the first /Cert
+   */
+  public int cert_start = -1;
+
+  /**
+   * The length of the /cert placeholder.
+   */
+  public int cert_length = -1;
+  
+  /**
+   * The length of the /TimeStamp placeholder.
+   */
+  public int timestamp_length = -1;
+  
+  /**
+   * The start of the first /Timestamp
+   */
+  public int timestamp_start = -1;  
+
+  /**
+   * The list of strings of the KZ.
+   */
+  public List kz_list;
+
+  /**
+   * The table position.
+   */
+  public TablePos pos;
+  
+  /**
+   * For signing: the profile.
+   */
+  public String signProfile;
+  
+  /**
+   * The actual position where the table was written.
+   */
+  public ActualTablePos actualTablePos;
+
+  /**
+   * The field definitions of invisible fields, which data should be stored in /Data.
+   */
+  public List invisible_field_definitions;
+  
+  /**
+   * The invisible KZ String, if KZ is invisible.
+   */
+  public String invisibleKZString = null;
+  
+  /**
+   * List {@link NonTextObjectInfo} of non text objects if available (text signature only).
+   * 
+   */
+  public List nonTextObjectInfos;
+  
+  
+  /**
+   * The timestamper if any
+   */
+  public TimeStamper timeStamper;
+
+  // dferbas
+
+  public String getPdfVersion() {
+     byte[] pdf_data = this.original_document.getAsByteArray();
+     PdfReader reader;
+     String pdfVersion = null;
+     try {
+        reader = new PdfReader(pdf_data);
+        // is.close();
+
+        byte[] metaData = reader.getMetadata();
+        if (metaData != null) {
+           pdfVersion = PdfAUtil.findPdfAVersion(new String(metaData));
+        }
+        if (pdfVersion == null) {
+           pdfVersion = "PDF 1." + reader.getPdfVersion();
+        }
+
+        reader.close();
+     } catch (IOException e) {
+        log.error(e.getMessage(), e);         
+     }
+     return pdfVersion;
+  }
+}