Jon D. Paul. CIA, cipher machine, cold war, electromechanical, encryption, encryption machines, tech history.

Jon D. Paul

Jon D. Paul is a electrical engineer, inventor, and restorer of vintage cipher machines including the Crypto Ag HX-63. He is also a member of the Association des Réservistes du Chiffre et de la Sécurité de l’Information (Association of Reservists of the Ciphers and Security of Information) and frequent contributor to museum exhibitions and technical conferences in France.