Beakman's World: History of Cryptography
11:36 - 19:58
8m 22s
Beakman explains the history of code. Cryptography is the foundation of codes. Beakman then makes a DIY skytale to create a secret code. The enigma machine helped with WW2 codes and then Beakman shows how to create a DIY Grille to decode messages.
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