RC4 crap

rc4_crap.rb

    def encrypt str
      c = OpenSSL::Cipher::Cipher.new("rc4")
      c.encrypt
      c.key = secret_key
      e = c.update( str )
      e << c.final

      # Make it purdy. Useful for database storage.
      e.unpack("H*")[0]
    end

    def decrypt enc_str

      # Unmake it purdy.
      enc_str = [enc_str].pack("H*")

      c = OpenSSL::Cipher::Cipher.new("rc4")
      c.decrypt
      c.key = secret_key # Note, this is plain text, not hex, etc.
      c.padding = 0
      d = c.update( enc_str )
      d << c.final
    end