Chasing the Rabbit - a cryptanalytic contest

Hi all!

At the rump session of Crypto 2006, we started the
"chasing the Rabbit"
contest. Dan Bernstein was so kind as to present the slides
on our
behalf. The details of the contest are given below; they can
also be
downloaded from http://www.cryptico.com/Files/Filer/rabbit_contest.pdf.

Best regards

Erik Zenner

--
Dr. Erik Zenner       Phone:  +45 39 17 96 06    Cryptico
A/S
Chief Cryptographer   Mobile: +45 60 77 95 41   
Fruebjergvej 3
ezcryptico.com       www.cryptico.com           DK 2100
Copenhagen

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Chasing the Rabbit - a cryptanalytic contest

At the workshop on Fast Software Encryption (FSE) 2003, the
stream
cipher Rabbit was presented for the first time. It used a
novel approach
for pseudo-random output generation and provided very high
performance.
Now, 3 1/2 years later, Rabbit is still unbroken. 

Starting from August 1, 2006, Cryptico A/S starts the Rabbit
contest.
The purpose is to encourage further research and analysis,
but also the
publication of already existing results. For the most
interesting paper
on Rabbit cryptanalysis, Cryptico A/S offers a price of US $
1000. 

In order to qualify for the competition, a paper has to meet
the
following conditions:
- At least part of the paper deals with cryptanalysis of the
Rabbit
stream cipher. 
- Cryptanalysis may be of the full cipher, of a reduced
version, or of
cipher components. 
- The paper has been accepted for presentation at a
cryptographic
conference with fully reviewed proceedings (either online or
printed),
or for publication in an academic journal of good standing. 
- Cryptico A/S has been notified about the paper's
existence and the
conference or journal it has been accepted for. 

The closing date of the competition is September 30, 2007.
After that
date, the Cryptico jury will decide on which paper it
considers to be
the most interesting. We preserve the right to split the
price money
between several contestants, if this seems most appropriate.


Closing remarks:
- Employees, former employees, and advisory board members of
Cryptico
A/S may not participate. 
- The specification of the Rabbit stream cipher and the
white papers on
cryptanalysis are available from the Cryptico homepage,
http://www.cryptico.com/.
- For any questions or comments, please contact infocryptico.com.

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At 15:26  +0200 2006/08/23, Erik Zenner wrote:
>Hi all!
>
>At the rump session of Crypto 2006, we started the
"chasing the Rabbit"
>contest. Dan Bernstein was so kind as to present the
slides on our
>behalf. The details of the contest are given below; they
can also be
>downloaded from http://www.cryptico.com/Files/Filer/rabbit_contest.pdf.

Dan did *not* make the presentation. He was on the program
but didn't speak.

Greg.


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