insider.si.edu

Codes and ciphers : Julius Caesar, the Enigma, and the internet / R.F. Churchhouse

1. Introduction -- 2. From Julius Caesar to simple substitution -- 3. Polyalphabetic systems -- 4. Jigsaw ciphers -- 5. Two-letter ciphers -- 6. Codes -- 7. Ciphers for spies -- 8. Producing random ...
Morning Overview on MSN

Voynich manuscript: New study says it may actually be a cipher

The Voynich manuscript has long been shorthand for the unsolved and the unknowable, a late medieval codex filled with looping ...
insider.si.edu

History of cryptography and cryptanalysis codes, ciphers, and their algorithms John F. Dooley

Introduction: A revolutionary cipher -- Cryptology 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 ...