class WebCertificateHandler
{
  public WebCertificateHandler(HttpServletRequest request,
                               HttpServletResponse response,
                               AttributeEntry[] aliases)
    throws ParameterError;
  public WebCertificateHandler(HttpServletRequest request,
                               HttpServletResponse response,
                               String aliasesFile)
    throws ParameterError, FormatError, FileNotFoundException,
           IOException, SecurityException;
 
  public void handle(Callback[] callbacks)
    throws IOException, UnsupportedCallbackException;
}