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Date: Mon, 16 Jul 2012 23:32:36 +0530
From: Sayantan Datta <std2048@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: PBKDF2 implementation with salt length > 16

On Mon, Jul 16, 2012 at 7:38 PM, Dhiru Kholia <dhiru.kholia@...il.com>wrote:

> Hi,
>
> I am looking for a self-contained PBKDF2 implementation which supports
> salt lengths > 16. The following two options only work correctly if
> salt length <= 16.
>
> 1. http://openwall.info/wiki/john/MSCash2
>
I guess 16 is the salt length in unicode. So it supports only 8 char e.g
"12345678"


> 2. WPA-PSK OpenCL kernel
>
> Any ideas how to fix these kernels? Why are these kernels buggy?
> Lukas, Sayantan, Jim? Thanks!
>
> --
> Cheers,
> Dhiru
>

There is some problem with sha1_digest in wiki/MSCash2. My implementation
of pbkdf2_kernel is mostly inspired from Jim's openssl code in CPU MSCash2.
So you may take a look at that.

Regards,
Sayantan

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