john-users - Re: Re: John the Ripper 1.7.8-jumbo-4

Openwall GNU/*/Linux 3.0 - a small security-enhanced Linux distro for servers
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Date: Sun, 24 Jul 2011 13:44:24 -0500
From: "JimF" <jfoug@....net>
To: <john-users@...ts.openwall.com>
Subject: Re: Re: John the Ripper 1.7.8-jumbo-4

There is a patch past jumbo-4. Solar beat me to completion by releasing J4 
before I finished all I was working on.

The Jumbo-4 patch does get these md5gen sub-formats 'working' in x86-64 
builds.  It does this by setting a flag that FORCES md5-gen to not use SSE 
instructions (only for x86-64 builds) on the priorly broken sub formats. 
Once it is forced back into 'generic' OpenSSL type mode (usually does not 
use OpenSSL, btw), the code worked fine. However, any performance benefit of 
the SSE enhancements were lost.

However, I have found the problem, and correctly fixed it. Now, these 
subformats work correctly AND utilize SSE2i on linux-64 builds.   There are 
also many more changes / improvements.

Thus if a user wants better performance, they can obtain jumbo-4 today, and 
apply a few patches from the wiki pages, and get this performance.

However, it is likely that a jumbo 5 will be out shortly that incorporates 
all of these changes into a single jumbo build.

The patches can be found:  http://openwall.info/wiki/john/patches

NOTE, there is also a new John-Test-Suite (v1.05).  It is always good to 
test your john build, to make sure it actually will find the hashes it 
claims to be able to find.

Jim.


----- Original Message ----- 
From: "Donovan" <contact.newangels@...il.com>
To: <john-users@...ts.openwall.com>
Sent: Sunday, July 24, 2011 12:37 PM
Subject: [john-users] Re: John the Ripper 1.7.8-jumbo-4


> Solar Designer <solar@...> writes:
>
>>
>> Hi,
>>
>> John the Ripper 1.7.8-jumbo-4 is available from the usual places:
>>
>> http://www.openwall.com/john/
>>
>> Thanks to magnum and JimF!
>>
>>
>> JimF enhanced the "generic MD5" code to provide more of the MD5 and
>> SHA-1 based hash types under more build targets.  Yes, sha1(md5($p)),
>> also known as md5_gen(23), now works under -x86-64 targets.
>>
>>
>>
>> Alexander
>>
>
> Hello,
>
> Wow ! awesome News !! thank you so much ! specialy for the sha1(md5($p)) + 
> the
> other improvements for sure.
>
> Regards,
>
> Donovan
>
>
>
>