src_samples/org/apache/xml/security/samples/utils/Base64Sample.java

/*
 * Copyright  1999-2004 The Apache Software Foundation.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */
package org.apache.xml.security.samples.utils;



import java.math.BigInteger;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.apache.xml.security.c14n.Canonicalizer;
import org.apache.xml.security.utils.Base64;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Text;


/**
 * Sample usage for Base64 class
 *
 * @author $Author$
 */
public class Base64Sample {

   /**
    * Method main
    *
    * @param unused
    * @throws Exception
    */
   public static void main(String[] unused) throws Exception {

      DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();

      dbf.setNamespaceAware(true);

      DocumentBuilder db = dbf.newDocumentBuilder();
      Document doc = db.newDocument();
      //J-
      BigInteger bi =
         new BigInteger("43268743267463264169236328648732694167862"
                        + "349613278648732164986132849761329543543"
                        + "874618327964897164823698416236345435435"
                        + "491823648913268496218974698126498712698"
                        + "426861432892343242343243242342342354354"
                        + "349613278648732164986132849761329543543"
                        + "874618327964897164823698416236345435435"
                        + "491823648913268496218974698126498712698"
                        + "426861432892343242343243242342342354354"
                        + "349613278648732164986132849761329543543"
                        + "874618327964897164823698416236345435435"
                        + "491823648913268496218974698126498712698"
                        + "426861432892343242343243242342342354354"
                        + "349613278648732164986132849761329543543"
                        + "874618327964897164823698416236345435435"
                        + "491823648913268496218974698126498712698"
                        + "426861432892343242343243242342342354354"
                        + "349613278648732164986132849761329543543"
                        + "874618327964897164823698416236345435435"
                        + "491823648913268496218974698126498712698"
                        + "426861432892343242343243242342342354354"
                        + "3246874621496829136");
      //J+
      Text base64text = doc.createTextNode(Base64.encode(bi));
      Element root = doc.createElementNS(null, "Base64");

      doc.appendChild(root);
      root.appendChild(base64text);

      Canonicalizer c14n =
         Canonicalizer.getInstance(Canonicalizer.ALGO_ID_C14N_WITH_COMMENTS);

      System.out.println(new String(c14n.canonicalizeSubtree(doc)));
   }
}