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Date: Fri, 29 Sep 2017 15:44:55 +0200
From: Frank Dittrich <>
Subject: Re: OMP vs. OpenCL performance

Am 29.09.2017 um 15:34 schrieb Scott I. Remick:
> On Fri, Sep 29, 2017, at 03:10 AM, magnum wrote:
>>   I presume your hashes are in the order of 500,000 iterations. If not,
>> that's too slow.
> I did some research and couldn't find a definitive answer to that, but I
> wouldn't put it beyond Apple to use that many in MacOS in 2017. Perhaps
> someone on this list knows.

Actually, john will provide that information :

Loaded 1 password hash (PBKDF2-HMAC-SHA512, GRUB2 / OS X 10.8+ 
[PBKDF2-SHA512 128/128 AVX 2x])
Cost 1 (iteration count) is 24213 for all loaded hashes


Loaded 11 password hashes with 10 different salts (PBKDF2-HMAC-SHA512, 
GRUB2 / OS X 10.8+ [PBKDF2-SHA512 128/128 AVX 2x])
Loaded hashes with cost 1 (iteration count) varying from 1000 to 37313


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