Abstract: A system and method for providing an improved way to secure messages being transmitted between communicating devices. Security mechanisms, operating below the session establishment level, provide fast encryption that is unconditionally secure or becomes stronger over time as devices continue to communicate. After random or arbitrary characters are used to encrypt an initial message, each new message communicated between two devices is encrypted with the most recent message communicated there-between as well as the changing key. Moreover, an exclusive dyadic relationship between the devices is obtained which prevents the cloning or piracy of the devices or the data communicated between them. The disclosed system and method also provide a multi-threading capability, thereby reducing the likelihood of a denial of service of attack.