Top Secret: A Handbook of Codes, Ciphers, and Secret Writing By Paul B. Janeczko, illustrated by Jenna LaReau Candlewick, $16.99 Ages 10-14 years Declaration of truth in reviewing: I have never wan… ...

You could do worse than to confuse the meanings of "code" and "cipher"—even cryptographers sometime use the terms as though they had the same meaning. There is, however, a definite distinction ...

But if no one manages to crack the messages, Ricky McCormick’s notes may join an elite group of the world’s most mystifying ciphers and codes.

Janeczko discusses numerous codes that have been used throughout history, from Morse code and semaphore to examples of code usage, such as the ""Beale cipher,"" a still-unsolved mystery regarding ...

Codes -- 7. Ciphers for spies -- 8. Producing random numbers and letters -- 9. The Enigma cipher machine -- 10. The Hagelin cipher machine -- 11. Beyond the Enigma -- 12. Public key cryptography -- 13 ...

We both shared a fascination with codes and ciphers and spent time challenging each other, etc. This book grew out of that fascination.

Students will learn how codes and ciphers were made and used during World War II, practice deciphering codes, create their own ciphers and go on a mission in the museum. Registration required by ...