International Conference On Cryptologic History

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ICCH awarded a Golden Alice for Best Cryptographic History Event of 2020.
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Welcome to the home page of the International Conference on Cryptologic History (ICCH).

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Upcoming Presentations

Here is a list of upcoming presentations at ICCH. The next presentation is shown at the top. Click on each listing to reveal more information below, including the speaker, as well as the presentation date and description.

To view past 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:

A Simulator for the Welchman-Turing and US Navy Bombes

Speaker(s):
Date & time (UTC/GMT):
November 14, 2021 5:00 PM
Description:

I will give a quick look at the room in The National Museum of Computing, using our online virtual tour facility, in which the Bombe rebuild is situated. Then I will examine the process of analyzing a message to work out how to plug up the Bombe, and then plugging up the Bombe using the Lysator simulator will be explained. For this, a typical crib will be used. The methodology to create the "menu" (a wiring diagram) and then how to wire up this "menu" on the back of the Bombe will be shown, followed by setting the rotors on the front of the machine and starting the run. I will then show how to dismiss false-stops using the checking machine. It is not intended to explain how the Bombe does its work as that is well described elsewhere. Then I shall introduce my software package for automating the wiring of the Bombe simulator The functional difference between the Bombe and the Polish Bomba will be explained. And finally I will discuss the 4-rotor (US Navy Bombe) mode.

Page last updated:

November 12, 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

Upcoming Presentations

Live presentations are held online every fortnight, covering topics including cipher machines/devices, as well as codes and codebreaking from the world's leading experts on cryptologic history.

Here is a list of upcoming presentations at ICCH. The next presentation is shown at the top. Click on each listing to reveal more information below, including the speaker, date and presentation description.

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:

A Simulator for the Welchman-Turing and US Navy Bombes

Speaker(s):
Date & time (UTC/GMT):
November 14, 2021 5:00 PM
Description:

I will give a quick look at the room in The National Museum of Computing, using our online virtual tour facility, in which the Bombe rebuild is situated. Then I will examine the process of analyzing a message to work out how to plug up the Bombe, and then plugging up the Bombe using the Lysator simulator will be explained. For this, a typical crib will be used. The methodology to create the "menu" (a wiring diagram) and then how to wire up this "menu" on the back of the Bombe will be shown, followed by setting the rotors on the front of the machine and starting the run. I will then show how to dismiss false-stops using the checking machine. It is not intended to explain how the Bombe does its work as that is well described elsewhere. Then I shall introduce my software package for automating the wiring of the Bombe simulator The functional difference between the Bombe and the Polish Bomba will be explained. And finally I will discuss the 4-rotor (US Navy Bombe) mode.

Page last updated:

November 12, 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).