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Codes, Cryptography & BlockchainClassical Cryptography

The Enigma Machine

158 quintillion settings, changed every single day

Press the same key twice on this machine and you get two different letters. How could anyone ever read its messages?

You'll find out

  • Why one key gives many letters
  • The mirror inside the machine
  • How big 158 quintillion really is

Why it matters

A machine its makers trusted completely shows what makes a code strong, and what makes it fall.

About 3 min6 interactive slides · 5 questionsLesson 178 · Zone 20

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