The Joy of Cryptography

Did you ever want to send a message that only your friend can read? Or did you want to try and uncover a secret communication from someone else? If so, then here's everything you need to know about creating and cracking codes—from the simplest substitution messages to the secrets of the well-known World War II coding contraption, the amazing Enigma Machine!

This essential guide is the definitive introduction to all major areas of cryptography: message security, key negotiation, and key management.

You'll be thrilled as this amusing book takes you on a codebreaking adventure, learning ways to decode both simple and difficult puzzles, as well as provides you with a history on the cryptology.