Tunny Cryptanalysis at Bletchey Park, 1942-1945
Dr. Jim Reeds (IDA CCR) will give a presentation on Tunny cryptanalysis at Bletchey Park at Bell Laboratories, Nokia, in Murray Hill, NJ. The meeting will be held in Room 6A-106, which is located near the main entrance behind the Bell Labs Showcase exhibition area. It is not necessary to register as a visitor to access this area.
Everyone is welcome to attend this meeting.
Please register in advance for this meeting using VTOOLS to provide the meeting organizers an accurate head count. You can change/cancel the registration if your plans change.
For more information, please contact Adriaan van Wijngaarden (avw@ieee.org).
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- 600 Mountain Ave
- Murray Hill, New Jersey
- United States 07974
- Building: Bell Laboratories, Nokia
- Room Number: 6A-106
- Click here for Map
- Contact Event Host
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Adriaan J. van Wijngaarden, IEEE North Jersey Section Chair and IEEE New York/North Jersey Information Theory Society Chapter Chair, E-mail: avw@ieee.org
- Co-sponsored by IT, COMSOC, VTS
- Starts 01 September 2016 04:00 PM UTC
- Ends 15 September 2016 05:30 PM UTC
- No Admission Charge
Speakers
Jim Reeds
Tunny Cryptanalysis at Bletchey Park, 1942-1945
Abstract - The solution of the German "Tunny" cipher at Bletchley Park in the latter part of World War II marked, in its time, an extreme point in cryptanalytical technique with regard both to its mathematical and statistical sophistication as well as to its use of pioneering electronic computing machines.
In spite of the impression left by television documentaries, the effectiveness of the Tunny-breaking techniques diminished over time. German improvements in the Tunny cipher machine and in the ways it was used made the job of the quaintly-named Government Code & Cypher School (GC&CS) increasingly harder. So did the steadily increasing volume of traffic sent on an ever-increasing number of Tunny links. The paradoxical net result is, although GC&CS put more and more resources into the problem, and although GC&CS's techniques became more sophisticated and stronger, and although GC&CS used innovative electronic computing machines to help with the work, and although the amount of plain text resulting from this effort kept climbing, the success rate kept dropping. By the end of the war a much smaller fraction of the Tunny traffic was read than in late 1942 and early 1943.
The speaker is one of the editors of the recently published "Breaking Teleprinter Ciphers at Bletchley Park", a scholarly edition of the once-secret 1945 "General Report on Tunny".
Address:IDA CCR,
Jim Reeds
Tunny Cryptanalysis at Bletchey Park, 1942-1945
Biography:
Jim Reeds
Tunny Cryptanalysis at Bletchey Park, 1942-1945
Biography:
Jim Reeds
Tunny Cryptanalysis at Bletchey Park, 1942-1945
Biography:
Agenda
| 02:00 pm - 03:00 pm | Tunny Cryptanalysis at Bletchey Park, 1942-1945 |
| Dr. Jim Reeds, IDA CCR |