def strip_padding
      subset = bytes
      
      if padding?
        pad = padding
        len = pad.length
        subset = bytes[0,bytes.length - len]
      end
      self.class.new(subset)
    end
def strip_padding
      subset = bytes
      
      if padding?
        pad = padding
        len = pad.length
        subset = bytes[0,bytes.length - len]
      end
      self.class.new(subset)
    end
Strip the existing padding if present