The cipher of Mary Queen of Scots
The birth of cryptography, the substitution cipher and the invention of codebreaking by frequency analysis
The anonymous codebreaker
The Vigenere cipher, why cryptographers seldom get credit for their breakthroughs and a tale of buried treasure
The mechanization of secrecy
The Zimmermann telegram, the Enigma machine and how cryptography changed the courses of World Wars I and II
The impenetrability of unknown languages, the Navajo code talkers of World War II and the decipherment of Egyptian hieroglyphs
Modern cryptography, the solution to the so-called key-distribution problem and the secret history of nonsecret encryption
The politics of privacy, the future of cryptography and the quest for an uncrackable code.
