Explains various methods used in cryptography and presents examples to help readers in breaking secret codes

Presents history, trivia, and code-breaking tales in a guide book to the world of secret writing that includes examples of a variety of codes and ciphers.

A how-to book for creating and deciphering codes.

Perfect for word lovers and puzzlers, this comprehensive, illustrated volume includes Indian sign language, Morse code, Jefferson's cipher wheel and more, prese

An explanation of the development, methods, and use of cryptography throughout history.