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Frank Rubin
Books by Frank Rubin
Secret Key Cryptography
Ciphers, from simple to unbreakable
By Frank Rubin
Explore the fascinating and rich world of Secret Key cryptography! This book provides practical methods for encrypting messages, an interesting and entertaining historical perspective, and an incredible collection of ciphers and codes—including 30 unbreakable methods.
In Secret K...
In Secret K...