cryptography

This revealing book traces codes throughout history, from an encryption device used by the Spartans in 400 B.C. to the Enigma Code of the 1940s, pausing to consider coded military secrets and newspaper scoops alike. Students will be delighted by code-cracking diagrams.

Examines cryptography, discussing the history of the science, different cipher types, and how codes and codebreaking have changed with computers.

This account of the Allied efforts to decode Axis messages--and keep the success of their efforts secret--describes the men and women behind the scenes, as well as the institutions they served, and the early computers devised for the purpose.

Discusses secret writing, ciphers, and the processes of creating and deciphering secret or difficult languages. Includes thinking and writing exercises.

Two Navajo brothers use their native language that they've been forbidden to speak to help in winning World War II.

Presents various methods of writing, speaking, and signaling secret messages.

Discusses the history and different varieties of codes and ciphers, describing code machines, signals, sign language, picture languages, and hidden messages.

This book discusses the battle between codemakers and codebreakers that has been going on for centuries as well as describing the processes of enciphering and deciphering.