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Message-ID: <e8cad4f82230cf3eccb7006ff99a1939@smtp.hushmail.com>
Date: Tue, 7 May 2013 08:53:02 +0200
From: magnum <john.magnum@...hmail.com>
To: john-dev@...ts.openwall.com
Subject: Re: Enhancements to pbkdf2-sha256
On 7 May, 2013, at 7:45 , jfoug@....net wrote:
> ---- jfoug <jfoug@....net> wrote:
>> $ ../run/john -test=5 -form=aix-ssha
>> Benchmarking: aix-ssha, AIX LPA PBKDF2-HMAC-SHA-1 / SHA-2 [32/32]... DONE
>> Raw: 4629 c/s real, 4733 c/s virtual
>>
>> $ ../run/john -test=5 -form=aix-ssha
>> Benchmarking: aix-ssha, AIX LPA PBKDF2-HMAC-SHA-1 / SHA-2 [32/32]... DONE
>> Raw: 23831 c/s real, 24317 c/s virtual
>>
>> That is a 5x improvement, by simply not using the 'official/correct'
>> PKCS5_PBKDF2_HMAC() function.
>
> Here is an SSE2 build:
>
> $ ../run/john -test=5 -form=aix-ssha
> Benchmarking: aix-ssha, AIX LPA PBKDF2-HMAC-SHA-1 / SHA-2 [32/32]... DONE
> Raw: 74061 c/s real, 74737 c/s virtual
WAT!?, so you went from 4K to 24K without even starting to use SSE2? Wow. If you're not done with SSE2 SHA-512 in time for 1.8-Jumbo-1 we should simply wait until it's ready. We can release 1.7.9-Jumbo-8 in the meantime :-)
magnum
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