Date: Sat, 7 Aug 2010 19:05:06 -0400 From: kenshin himura <foufou33@...il.com> To: john-users@...ts.openwall.com Subject: DES bit slice VS standard Hi all, do you have any pointer regarding the use of JR to exhaust the key space of DES (simple plain old ECB DES) ?? that is I'm trying to implement something using CUDA. Do I have any advantage to use Bitsliced implementation over the statndard one? The situation is like this : Given: Cipher text . the first bytes of the plaintext (or at least what they should look like) unkonwn: Key (of course :)) and plain text The idea is to decrypt the first (and only the first block) and may times as needed (in parallel : CUDA) extract first bytes and compare if intresting store it. As I understand the Bitslice is good for multiple enc/dec on diffrent blocks using the same key so in this situation does it really give the edge over table lookups ?? Thanks -- - Unix is fundamentally a simple system, but you have to be a genius to understand it's simplicity. - Do not seek death, death will ultimatly find you. Seek the raod that makes death a fullfilment.
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