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Date: Wed, 18 Jul 2012 16:32:50 +0800
From: myrice <qqlddg@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: reset()

On Wed, Jul 18, 2012 at 10:13 AM, Solar Designer <solar@...nwall.com> wrote:
> myrice, magnum, Jim, all -
>
> Here's how I am introducing reset() - a format method that may transfer
> salts/hashes to GPU.
>
> /* Called whenever the set of password hashes being cracked changes, such as
>  * after self-test, but before actual cracking starts.  When called before a
>  * self-test or benchmark rather than before actual cracking, db may be NULL.
>  * Normally, this is a no-op since a format implementation shouldn't mess with
>  * the database unnecessarily.  However, when there is a good reason to do so
>  * this may e.g. transfer the salts and hashes onto a GPU card. */
>         void (*reset)(struct db_main *db);
>
> ..
> Unfortunately, the existing self-test won't be able to test such formats
> for real (including their on-GPU storage of salts/hashes).  We may
> revise the approach to self-testing later.
>

I see your patch. If we passed NULL before self-test or benchmark, we
could not use reset() to store hashes/salts in self-test or benchmark.
So selt-test and benchmark cannot measure stored loaded hashes/salts
on GPU, right?

Thanks
myrice

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