Programmatio_computatralis
Alanus_Mathison_Turing
Cryptographia
WikiLeaks
Tessera_(solutio)
Codex_Voynich
Leo_Baptista_Albertus
Claudius_Elwood_Shannon
Praesidium_Communicationis_Gubernativum_(Britanniarum_Regnum)
Quadratum_Satoris
Steganographia
Irving_Ioannes_Good
WhatsApp
Notae_Caesarianae
Augustus_Kerckhoffs