Espionage Black Book Two

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Benjamin Franklin once said, "Three may keep a secret if two of them are dead." There is some truth to that thought, but when there is a need to transmit secret information from one person to another, communication will undoubtedly be via a cryptosystem. In this second in the series of "Espionage Black Books, " former government intelligence officer Dr Henry Prunckun explains what codes and ciphers are, how they are created, and how they can be broken. These fascinating details lead to a discussion about so-called unbreakable ciphers, and whether they can survive future attacks by quantum computers and sophisticated search algorithms.