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Date: Sat, 15 Jun 2013 09:32:32 +0530
From: Sayantan Datta <std2048@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: Mask mode for GPU

On Saturday 15 June 2013 06:36 AM, Solar Designer wrote:
> As to introducing support for format's set_mask() into this - now that's
> possibly more difficult than it would be with a specialized implementation.
> Yet I think we should not give up on this approach.  Perhaps we'd have
> to untie mask mode from rpp, but we may nevertheless start by duplicating
> much of rpp's structure and initially even code - and only then proceed
> to customize it for optional use of set_mask().

I looked into the patch. You are using rpp to generate passwords on cpu 
even though rpp was primarily meant to process rules which are very 
similar to password generation. But if I understand correctly,we need 
only the set of characters for each place holder that will be used on 
gpu to generate the required password.  I should find a way to do that 
using rpp's format, right?

Also we need to parallelize rpp's algorithm of password generation for 
gpu SIMDs.

Regards,
Sayantan

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