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RT @SMCADMAN: Polyalphabetic Encryption: Keys: De cifris of Leon Battista Alberti (1404–1472) https://t.co/7HosijdYDR
6,522 followers
Polyalphabetic Encryption: Keys: De cifris of Leon Battista Alberti (1404–1472) https://t.co/7HosijdYDR