International Conference On Cryptologic History

NEWS

ICCH awarded a Golden Alice for Best Cryptographic History Event of 2020.
Search ICCH speakers, presentations & websites.

Welcome to the home page of the International Conference on Cryptologic History (ICCH).

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Archived Presentations

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 info@cryptologichistory.org.

Presentation:

M-94 Cylinder Cipher: A Story of Innovation, Intrigue, and Deception

Speaker(s):
Date & time (UTC/GMT):
October 3, 2020 5:00 PM
Description:

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.

Page last updated:

January 9, 2021

Register for ICCH

Thank you. You are now registered and will receive a confirmation email shortly.
Oops! Something went wrong while submitting the form. Please try again.

Welcome to the home page of the International Conference on Cryptologic History (ICCH).

Welcome to the home page of the International Conference on Cryptologic History (ICCH).

Register for ICCH

Thank you. You are now registered and will receive a confirmation email shortly.
Oops! Something went wrong while submitting the form. Please try again.

Speakers
Presentations
Useful Links
ICCH File Drive
Contact

Archived Presentations

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 File Drive.

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.

Presentation:

M-94 Cylinder Cipher: A Story of Innovation, Intrigue, and Deception

Speaker(s):
Date & time (UTC/GMT):
October 3, 2020 5:00 PM
Description:

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.

Page last updated:

January 9, 2021

Register for ICCH

Thank you. You are now registered and will receive a confirmation email shortly.
Oops! Something went wrong while submitting the form. Please try again.

Welcome to the home page of the International Conference on Cryptologic History (ICCH).