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

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

Code Making and Code Breaking by Jack Luger is a practical guide to the world of cryptography. This illustrated book explores the art of creating secret codes a

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

Ever since humans first began to communicate, we’ve had secrets to keep — secrets of state, war, business, or the heart. From the moment the first secret me