This directory is meant to preserve copies of papers, source code, etc.
related to bitslice implementations of DES (focusing on the S-boxes).

Eli Biham's paper that started it all (biham/cs0891.ps.gz):

http://www.cs.technion.ac.il/users/wwwb/cgi-bin/tr-info.cgi?1997/CS/CS0891
http://www.cs.technion.ac.il/~biham/Reports/cs0891.ps.gz

Matthew Kwan's optimized DES S-box expressions (crawled and preserved as
mkwan/mkwan-bitslice-des-20100611.tar.gz):

http://www.darkside.com.au/bitslice/

Marc Bevand's new set of bitslice DES "S-Box circuits" that average 45.5
gates per S-box by using all the logical instructions of the Cell B.E.
processor SPU ISA (m.bevand/ subdirectory):

http://www.zorinaq.com

Dumplinger Boy (Dango-Chu)'s optimized DES S-box expressions making use
of a vector conditional select operation such as on PowerPC with AltiVec
(dango.chu.jp/ subdirectory):

http://dango.chu.jp/hiki/?Bitslice+DES
http://dango.chu.jp/hiki/?Enhanced+Bitslice+DES
http://dango.chu.jp/hiki/?Bitslice+XOP

Dango-Chu's S-boxes are an improvement upon Marc Bevand's results.