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Introduction: A Revolutionary Cipher Crypto Before 1500: A Bit of Magic The Black Chambers: 1500 – 1776 Crypto Goes to War:  The American Revolution Crypto Goes to War: The American Civil War 1861 – 1865 Crypto and the War to End All Wars: 1914 – 1919 The Interwar Period: 1919 – 1941 The Rise of the Machines: 1918 – 1941 Battle Against the Machines: World War II 1939 – 1945 The Machines Take Over: Computer Cryptography Alice and Bob and Whit and Martin: Public-Key Cryptography Web and Mobile Device Cryptology Cyber Weapons and Cyber Warfare Cryptology and the Internet of Things What is Next in Cryptology? Cipher Mysteries