About this deck
Julius Caesar protected military dispatches with a substitution so simple a soldier could memorize it: shift every letter of the plaintext forward by three positions in the alphabet. Key sections include: Cryptography / Declassified; ~ 50 BC: The Caesar Cipher; 9th c.: Al-Kindi & Frequency Analysis; 1466: Alberti's Cipher Disk; 1939–45: Enigma & the Bombe; 1976: Diffie-Hellman Key Exchange; 1977: RSA — Public Keys for Everyone; 1991: PGP — Pretty Good Privacy; 2001: AES — The Modern Standard; Elliptic Curves & TLS 1.3.
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