Classic Codes and Ciphers

Classic Codes and Ciphers

Rachael L. Thomas


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Dive into the secret history of . . . secrets! Cryptology is the art and science of secret communication, and its purpose is to protect precious information and keep people safe. Learn about its building blocks: ciphers, codes, and keys.

People have wanted to hide messages and important information for millennia. Read how history's coolest codes and ciphers have progressed from belts and sticks to rotating disks and supercomputers. Use your cryptology skills to design your own secret cipher. And learn about the smart people who built and broke the strongest secret systems.


Rachael L. Thomas:
Rachael L. Thomas is an educational writer and digital media strategist. When she isn't working on new ideas to expand children's library shelves, you'll find her at Buffalo Wild Wings.