About this deck
Three thousand years of attempts to make a message readable to its intended recipient and unreadable to anyone else. Until 1976, all of it ran on the same fundamental architecture. Then everything changed. Key sections include: Crypt ography.; // Opening $ what is cryptography; Chapter I $ the shift cipher.; Chapter II $ frequency analysis.; Chapter III $ the polyalphabetic ciphers.; Chapter IV $ the one-time pad.; Chapter V $ the enigma machine.; Chapter VI $ bletchley park.; Chapter VII $ the shannon paper.; Chapter VIII $ the symmetric standards..
mathematicscryptography