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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What is ICCH?

The International Conference on Cryptologic History (ICCH) is a forum for the discussion of cryptologic history. Established in 2004 as 'Crypto Collectors', the group includes members located in many countries around the world. ICCH holds events both online and in-person, and also has an email list for general discussion.

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. These are held via the video conferencing program Webex Meeting*. Once a year, ICCH meets at the Friedrichshafen HAM Radio Festival, in Germany for the annual Enigma Forum and flea market. Find out more about the Friedrichshafen event here.

*Information on Cisco Webex Meeting: You are encouraged to allow the Webex Meeting application software to be installed on your computing device. Industry research suggests that security and privacy concerns are minimal. Your favourite browser can also be used, with some reduced functionality and performance. More information about Webex is available here. It is suggested that new participants become familiar with this information in order to make the experience as easy and pleasurable as possible.

Slide show images: Images taken at Friedrichshafen HAM Radio Fest 2014. Images courtesy of Crypto Museum.

News

ICCH has been awarded a Golden Alice for the Best Cryptographic History Event of 2020. You can read more about it here.

Note: ICCH is not responsible for the content of external sites.

The next presentation will held on Saturday, 8 August 2021. Date and times are provided in UTC/GMT. Details are below:

Presentation:

John F. Byrne's Chaocipher System: its History, How it Works, and How it Benefits Cryptology

Speaker:
Date & time (UTC/GMT):
August 8, 2021 5:00 PM
Description:
Description:

Invented in 1918 and published in 1953, John Francis Byrne's "Chaocipher" cryptographic system eluded the best amateur cryptanalysts for almost 60 years. When it was finally revealed, it surprised the cryptanalytic world for its originality. My presentation will present the complete history of this fascinating saga, the colorful characters involved in the story, how the presenter succeeded in uncovering the cipher system, how the cipher system works, and the current state of Chaocipher research. The presentation will also include important and practical lessons learned from the effort to solve Chaocipher, lessons applicable to all cryptanalytic endeavors.

Crypto History News

Note: ICCH is not responsible for the content of external sites. For translation purposes, links to non-English news articles open in Google Translate and are clearly marked as such.

Divers Discover Nazi Enigma Machine Thrown Into the Baltic Sea During WWII - Smithsonian Magazine 7 December 2020

51 Years Later, Coded Message Attributed to Zodiac Killer Has Been Solved, F.B.I. Says - The New York Times 11 December 2020

Six Enigma encryption machines recovered from the Baltic Sea - Welt 21 January 2021 (English translation)

Couple who found secret Nazi messages under floorboards on mission to crack code - Daily Mirror 6 May 2021

Events

FRIEDRICHSHAFEN 2021 (CANCELLED)

The annual ICCH Enigma Forum and Flea Market at the Friedrichshafen HAM Radio Fest 2021, which were due to be held on June 25 -- 27, 2021, have unfortunately been cancelled again due to the ongoing COVID-19 situation.

Our formation and active participation in the International Conference on Cryptologic History (ICCH) will continue to give us all access to some great information and lectures. It brings together cryptologists, historians and collectors who might not be able to attend meetings in person.

Reports of the ICCH Enigma Forum and Flea Market at Friedrichshafen from previous years are available
here.

The organisers of Friedrichshafen HAM Radio Fest have kindly welcomed us back for Friedrichshafen HAM Radio Fest 2022, scheduled for June 24 -- 26, 2022.

Download the following press statement released by the Friedrichshafen event organisers
here.

PRESENTATIONS


To view upcoming presentations click here.

To view past presentations click
here.

Slide show images: Images taken at Friedrichshafen HAM Radio Fest 2013 and 2014. Images courtesy of Crypto Museum.

Register for ICCH

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