Making and breaking secret messages from hieroglyphs to the Internet. Learn about the fascinating world of codes - from deciphering ancient hieroglyphics to the cipher machines used in wartime and modern computer cryptology for encoding financial transactions. The making and breaking of codes has shaped history: every chapter of this book is a dramatic story with thrilling narratives and detailed descriptions of code development. The topics include: Transposition ciphers; Substitution ciphers; Cipher devices and machines; Cryptanalysis; Codes; Codebooks; Codebreaking; Signals Steganography; Scripts & Languages; Invented languages; Biographies; and Quizzes and answers. This is a massive book with over 700 pages chock-full of fascinating history, logic and mathematical science. It chronicles the famous milestones in the world of secret communication: Thomas Jefferson's Wheel Cipher, Enigma and Bletchley Park, American Indian Codetalkers, Naval Codes, etc. Bestseller: Hardback Edition was published in 1998 and sold 46,000 copies worldwide; ISBN 1-57912-040-7.