[2890] in cryptography@c2.net mail archive
Re: Search for "better" F box for Skipjack
daemon@ATHENA.MIT.EDU (Mok-Kong Shen)
Tue Jun 30 11:08:45 1998
Date: Tue, 30 Jun 1998 09:32:16 +0100
From: Mok-Kong Shen <mok-kong.shen@stud.uni-muenchen.de>
To: Marcus Leech <Marcus.Leech.mleech@nt.com>
CC: cryptography@c2.net
Marcus Leech wrote:
>
> My system has been searching for over 3000 CPU minutes, and has
> yet to find an 8x8 S-box with maximum pairs-XOR count of
> <=10 and minimum hamming distance (to any of the linear-boolean
> vectors) > 0.405. Lots of boxes <= 10, but very few even
> approaching 0.405 in hamming distance.
What search heuristics do you use?
M. K. Shen
