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Here is a list of past presentations at ICCH. The most recent presentation is at the top. Click on each listing to reveal more information below, including the speaker, presentation description and to access recordings.
Note: Effort has been made to ensure that the information on each presentation is accurate and up-to-date. To suggest a correction please contact the ICCH webmaster Patrick Hayes at .
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.
January 9, 2021
Here is a list of past presentations at ICCH. The most recent presentation is at the top. Click on each listing to reveal more information below, including the speaker, as well as the presentation date and description. Presentation recordings are available separately, in the ICCH Portal.
To view upcoming ICCH presentations, click here.
Note: Effort has been made to ensure that the information on each presentation is accurate and up-to-date. To suggest a correction please contact the ICCH webmaster Patrick Hayes at info@cryptologichistory.org.
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.
January 9, 2021
