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.

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

The Secret Code Book is a short introduction to substitution ciphers. The chapters ease young readers into the concept of rotation ciphers and work their way up

Covert communications have won or lost wars, exposed political intrigue, disguised secret religions and societies, and secured financial transactions. This imme