Perfect Light is a one-time pad, a class of pure cyphers, independantly conceived by Frank Miller in 1882, and later by Gilbert Vernam in 1917 while working for AT&T. Since then, systems based on the principal have been used by nearly every foreign service, intelligence organization, and special forces command worldwide. In most modern implementations they are the fallback for station-to-station communication when other systems fail, and they are the only method used to order and confirm nuclear strikes. When the Soviets switched to once-time pads in 1948, devastating the National Security Agency's signal intelligence efforts, the infamous event was dubbed "Black Friday". They are brutally simple, and the mathematical perfection of the principle is obvious.
We have chosen a specific cypher system, originally codenamed DIANA, developed during the Cold War, mentioned publically as early as 2005, and fully declassified in 2015, on which to base Perfect Light. It has been used by American special forces and Other Government Agencies for decades. There are other one-time systems that have been equally battle-tested, but we feel DIANA is an ideal balance between Perfect, unbreakable encryption, and of Light enough design to be used regularly in a business envronment.
Two versions of the system are available, the professional version is currently only available as an included part of Objective Factor's Executive Information Assurance Coaching programs, though we are investigating the option of offering it as a standalone product.
PDF Package includes the printable Perfect Light (free edition) one-time pad field reference card, summarized documentation, and two pages of practice keys. Print the file twice, and give one to a colleague to get started. (PNG Version is available here.)
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