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Date: Mon, 20 Feb 2012 01:18:21 +0530
From: Deepika Dutta Mishra <>
Subject: Bitsliced DES

Hi, I am deepika and I just joined your mailing list. Actually I want to
use bitsliced DES for one of my projects so I wanted to learn about your
implementation which is said to be the fastest bitsliced DES with optimized
sbox expressions. I hope so you will help me in understanding bitslicing
technique,  I have few questions as mentioned below, please do answer.

--Does JTR do bitsliced DES using SSE and other vector processing
instructions only or c codes are also there (though i can't find one)?
--Is it possible to get sbox optimized expressions as used by JTR? Reading
from code is very difficult, if mathematical equations can be found?
--Have you published any papers or is there any documentation of your
implementation which can help in understanding your bitsliced DES code?

Though I know the basic idea of bitslicing, I want to understand your
implementation and use it according to my requirement as it is the most
optimized code. I hope so you will not have any problem in answering my

Waiting for your reply.


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