A wireless physically secure key distribution system

A fast and secure key distribution system is shown that operates in classical channels but with a dynamic protection given by the shot noise of light. The binary signals in the communication channel are protected by coding in random bases and by addition of physical noise that was recorded and added bit by bit to the signals. While the resulting signals are classical they carry the uncontrollable randomness information in the signal sent. The legitimate users start with a shared secret between them creating a measuring advantage over the adversary. This way the introduced noise does not affect the users but frustrates the attacker.