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diff --git a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/impl/vfilter/helper/VerificationFilterBinaryHelper.java b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/impl/vfilter/helper/VerificationFilterBinaryHelper.java
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+++ b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/impl/vfilter/helper/VerificationFilterBinaryHelper.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.
+ */
+package at.gv.egiz.pdfas.impl.vfilter.helper;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+import at.gv.egiz.pdfas.exceptions.ErrorCode;
+import at.knowcenter.wag.egov.egiz.PdfASID;
+import at.knowcenter.wag.egov.egiz.exceptions.InvalidIDException;
+import at.knowcenter.wag.egov.egiz.exceptions.PDFDocumentException;
+import at.knowcenter.wag.egov.egiz.pdf.BinarySignature;
+import at.knowcenter.wag.egov.egiz.pdf.Placeholder;
+import at.knowcenter.wag.egov.egiz.pdf.StringInfo;
+import at.knowcenter.wag.exactparser.parsing.IndirectObjectReference;
+import at.knowcenter.wag.exactparser.parsing.PDFUtils;
+import at.knowcenter.wag.exactparser.parsing.results.ArrayParseResult;
+import at.knowcenter.wag.exactparser.parsing.results.DictionaryParseResult;
+import at.knowcenter.wag.exactparser.parsing.results.FooterParseResult;
+import at.knowcenter.wag.exactparser.parsing.results.IndirectObjectReferenceParseResult;
+import at.knowcenter.wag.exactparser.parsing.results.NumberParseResult;
+import at.knowcenter.wag.exactparser.parsing.results.ObjectParseResult;
+
+/**
+ * Contains helpful methods used by the VerificationFilter to analyze the PDF for binary signatures.
+ * 
+ * @author wprinz
+ */
+public final class VerificationFilterBinaryHelper
+{
+  /**
+   * The name of the egiz dict key.
+   */
+  public static final byte[] EGIZ_DICT_NAME = { 'E', 'G', 'I', 'Z', 'S', 'i', 'g', 'D', 'i', 'c', 't' };
+
+  /**
+   * The name of the ID (SIG_KZ) property in the egiz dict.
+   */
+  public static final byte[] EGIZ_KZ_NAME = { 'I', 'D' };
+
+  /**
+   * The log.
+   */
+  private static final Log log = LogFactory.getLog(VerificationFilterBinaryHelper.class);
+
+  /**
+   * Tells, if the given incremental update block contains a binary signature.
+   * 
+   * <p>
+   * According to definition, if a block is a binary block, it must/cannot
+   * contain other signatures than this one.
+   * </p>
+   * 
+   * @param block
+   *          The incremental update block.
+   * @return Returns true, if this block is a binary signature block, false
+   *         otherwise.
+   */
+  public static boolean containsEGIZDict(final byte[] pdf, final FooterParseResult block)
+  {
+    int dict_index = PDFUtils.indexOfName(pdf, block.tpr.dpr.names, EGIZ_DICT_NAME);
+    if (dict_index <= 0)
+    {
+      return false;
+    }
+
+    return true;
+  }
+
+  /**
+   * Extracts the PDF AS ID of the egiz block.
+   * 
+   * @param pdf
+   *          The pdf.
+   * @param block
+   *          The IU block.
+   * @return Returns the extracted PDF AS ID.
+   * @throws PDFDocumentException
+   *           Forwarded exception.
+   * @throws InvalidIDException
+   *           Forwarded exception.
+   */
+  public static PdfASID extractKZFromEGIZBlock(final byte[] pdf, final FooterParseResult block) throws PDFDocumentException, InvalidIDException
+  {
+    int egiz_index = PDFUtils.indexOfName(pdf, block.tpr.dpr.names, EGIZ_DICT_NAME);
+    if (egiz_index < 0)
+    {
+      throw new PDFDocumentException(301, "egiz_index = " + egiz_index);
+    }
+
+    IndirectObjectReferenceParseResult egiz_dict_iorpr = (IndirectObjectReferenceParseResult) block.tpr.dpr.values.get(egiz_index);
+    // logger_.debug("egiz_dict_ir = " + egiz_dict_iorpr.ior.object_number
+    // + " " + egiz_dict_iorpr.ior.generation_number);
+
+    IndirectObjectReference ior = egiz_dict_iorpr.ior;
+
+    final int egiz_dict_offset = PDFUtils.getObjectOffsetFromXRefByIndirectObjectReference(block.xpr, ior);
+    // logger_.debug("egiz_dict_offset = " + egiz_dict_offset);
+
+    ObjectParseResult obj = PDFUtils.parseObject(pdf, egiz_dict_offset);
+    DictionaryParseResult egiz_dict = (DictionaryParseResult) obj.object;
+
+    int kz_index = PDFUtils.indexOfName(pdf, egiz_dict.names, EGIZ_KZ_NAME);
+    if (kz_index < 0)
+    {
+      throw new PDFDocumentException(301, "kz_index = " + kz_index);
+    }
+    ArrayParseResult kz_apr = (ArrayParseResult) egiz_dict.values.get(kz_index);
+
+    String kz_string = restoreKZ(pdf, kz_apr);
+    PdfASID kz = new PdfASID(kz_string);
+
+    return kz;
+  }
+
+  /**
+   * Restores the Kennzeichnung String from an Array.
+   * 
+   * @param pdf
+   *          The PDF.
+   * @param kz_apr
+   *          The Array, as parsed from the EGIZ Dict.
+   * @return Returns the restored KZ.
+   * @throws PDFDocumentException
+   *           Forwarded exception.
+   */
+  public static String restoreKZ(byte[] pdf, ArrayParseResult kz_apr) throws PDFDocumentException
+  {
+    try
+    {
+      List partition = new ArrayList();
+
+      int linesToProcess = (kz_apr.elements.size() / 2);
+      log.trace("Lines to process for KZ: " + linesToProcess);
+      /*
+      if (linesToProcess > 1) {
+         log.debug("Multiple KZHOTFIX: forcing single line to process");
+         linesToProcess = 1;
+      }
+      */
+      for (int i = 0; i < linesToProcess; i++)
+      {
+        NumberParseResult start_npr = (NumberParseResult) kz_apr.elements.get(i * 2);
+        NumberParseResult length_npr = (NumberParseResult) kz_apr.elements.get(i * 2 + 1);
+
+        StringInfo si = new StringInfo();
+        si.string_start = start_npr.number;
+        si.string_length = length_npr.number;
+        si.pdf = pdf;
+
+        log.trace("Adding KZ: " + si.toString());
+        
+        partition.add(si);
+      }
+
+      String KZ = Placeholder.reconstructStringFromPartition(pdf, partition, BinarySignature.ENCODING_WIN);
+      return KZ;
+    }
+    catch (IOException e1)
+    {
+      throw new PDFDocumentException(ErrorCode.DOCUMENT_CANNOT_BE_READ, e1);
+    }
+  }
+
+}