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Date: Sat, 13 Oct 2012 16:52:56 -0400
From: Alain Espinosa <>
Subject: Re: bitslice DES on GPU

On 10/13/12, Sayantan Datta <> wrote:
> As a point of reference, what should be our targeted non-overhead speed?
> For instance, Hashcat does 83.4M c/s in traditional-des.

Hi Sayantan. I am implementing bitslice LM algorithm in GPU for the
next version of Hash Suite. In an AMD HD 6450 i am benchmarking 80M
when loading a lot of hashes(1000-10000) and 250M-300M for small
hashes (less than 32) (oclhashcat get 24M). Yet there is room for
improvements, the ALUBusy is ~60%-70%. So i can probably double the
speed for small hashes, and get 3x-4x speedup for a lot of hashes.

In my opinion the target speed of a bitslice LM GPU implementation is
near Hashcat NTLM speed.


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