/**
 * 
 */
package at.knowcenter.wag.egov.egiz.test;

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.util.Iterator;
import java.util.Set;

/**
 * @author wprinz
 */
public class X509Ext
{

  /**
   * @param args
   * @throws CertificateException 
   * @throws IOException 
   */
  public static void main(String[] args) throws CertificateException, IOException
  {
    InputStream is = new FileInputStream("C:\\oid.der");
    CertificateFactory cf = CertificateFactory.getInstance("X.509");
    X509Certificate cert = (X509Certificate)cf.generateCertificate(is);
    is.close();
    
   Set oids = cert.getNonCriticalExtensionOIDs();
   Iterator it = oids.iterator();
   while (it.hasNext())
   {
     String oid = (String) it.next();
     
     System.out.println(oid);
   }
    
   // Perhaps use IAIK JCE to parse this in a future version.
   byte [] octet_stream = cert.getExtensionValue("1.2.40.0.10.1.1.1");
   System.out.println("octet_stream = " + octet_stream);

  }

}