Cracking Code Book

How to make it, break it, hack it, crack it.The secret history of codes and code breaking.Simon Singh's best-selling title The Code Book now re-issued for the young-adult market.The Science of Secrecy from Ancient Egypt to Quantum Cryptography.Simon Singh brings life to an amazing story of puzzles, codes, languages and riddles - revealing the continual pursuit to disguise and uncover, and to work ...