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diff --git a/src/main/java/at/knowcenter/wag/egov/egiz/pdf/Utils.java b/src/main/java/at/knowcenter/wag/egov/egiz/pdf/Utils.java
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+/**
+ * <copyright> Copyright (c) 2006 by Know-Center, Graz, Austria </copyright>
+ * 
+ * This software is the confidential and proprietary information of Know-Center,
+ * Graz, Austria. You shall not disclose such Confidential Information and shall
+ * use it only in accordance with the terms of the license agreement you entered
+ * into with Know-Center.
+ * 
+ * KNOW-CENTER MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
+ * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
+ * NON-INFRINGEMENT. KNOW-CENTER SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY
+ * LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
+ * DERIVATIVES.
+ * 
+ * $Id: Utils.java,v 1.3 2006/10/31 08:13:02 wprinz Exp $
+ */
+package at.knowcenter.wag.egov.egiz.pdf;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+
+/**
+ * Abstract class that contains helpful utility functions used by the digital
+ * signatures.
+ * 
+ * @author wprinz
+ */
+public abstract class Utils
+{
+
+  /**
+   * Extracts the pure content text from a given content stream.
+   * 
+   * <p>
+   * The pure content text is just an assembly of all strings that occur within the content stream in
+   * stream order.
+   * Each of these strings will be set on a new line.
+   * </p>
+   * 
+   * @param stream_bytes The content stream.
+   * @return Returns the extracted string.
+   * @throws IOException Forwarded exception.
+   */
+  public static String extractPureTextFromContentStream(
+      final byte[] stream_bytes) throws IOException
+  {
+
+    // logger_.debug("stream_bytes:");
+    // logger_.debug(new String(stream_bytes, "US-ASCII"));
+    // logger_.debug(":end of stream_bytes");
+
+    final byte OPEN = '(';
+    final byte CLOSE = ')';
+
+    StringWriter strwrtr = new StringWriter();
+    PrintWriter printer = new PrintWriter(strwrtr);
+    int open_index = -1;
+    int close_index = -1;
+    for (int i = 0; i < stream_bytes.length; i++)
+    {
+      if (stream_bytes[i] == OPEN)
+      {
+        open_index = i;
+        continue;
+      }
+      if (stream_bytes[i] == CLOSE)
+      {
+        close_index = i;
+
+        // logger_.debug("open = " + open_index + ", close = " +
+        // close_index);
+
+        int len = close_index - open_index - 1;
+        // logger_.debug("len = " + len);
+
+        byte[] bytes = new byte[len];
+        System.arraycopy(stream_bytes, open_index + 1, bytes, 0, len);
+
+        String str = new String(bytes, "ISO-8859-1");
+        // logger_.debug("string = " + str);
+
+        printer.println(str);
+
+        continue;
+      }
+    }
+    strwrtr.close();
+    String signature_text = new String(strwrtr.getBuffer());
+    // logger_.debug(signature_text);
+
+    return signature_text;
+  }
+
+}