"Discusses different methods for breaking secret codes"--Provided by publisher.

This unique book explains the basic issues of classical and modern cryptography, and provides a self contained essential mathematical background in number theor

Simply and clearly written book, filled with cartoons and easy-to-follow instructions, tells youngsters 8 and up how to break 6 different types of coded message

Learn how to program in Python while making and breaking ciphers—algorithms used to create and send secret messages! After a crash course in Python programmin

The award-winning New York Times bestseller about the American women who secretly served as codebreakers during World War II--a "prodigiously researched and eng