Date & time (UTC/GMT):
October 3, 2020 5:00 PM
This is the story of the invention and history of the cylinder cipher, starting with the c.1795 invention by Thomas Jefferson. This is a simple, user-friendly, and cryptographically strong cipher device for its time and was in use for over 150 years. We have evidence of the creative spark from Thomas Jefferson and Parker Hitt which brought about their independent inventions. The acceptance of the M-94 into the US military after WW1 is a story of deception involving the titans of early US cryptology; Joseph Mauborgne, William Friedman, and Herbert Yardley. An aluminum M-94 and a rare prototype M-94 will be demonstrated.