gistfile1.rb

com.write_message( ("\x02" + 6.chr + "AE5X:W" + ("AE5X:W" ^ 6.chr) + "\x03").force_encoding("ASCII-8BIT"))

  class ::String
    ###
    # @return the first charater in the string as an integer
    def byte
      self.bytes[0]
    end

    ### 
    # XOR two strings
    # @str assumed to be a one byte string or integer
    def ^ str
      if str.class == String
        str = str.byte
      elsif str.class == Fixnum
        nil
      else
        raise "invalid arg: #{str.class} \n Must be String or Fixnum"
      end
      self.bytes.each do |i|
        str = str ^ i
      end
      str.chr.force_encoding( "ASCII-8BIT")
    end
  end