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Date: Sat, 13 Feb 2016 15:34:29 -0500
From: Frank Wang <frankw@....edu>
To: john-users@...ts.openwall.com
Subject: Re: Doing raw SHA512 hashes

Sorry about that. opencl_office2013_fmt_plug.c has a bunch of functions but
no "main" function as far as I can see. What file calls the functions
in opencl_office2013_fmt_plug.c to do the cracking? I'm mainly wondering
this because I want to make sure that I'm using the kernel in the right way
to get the optimizations that John the Ripper has done.

Frank

On Sat, Feb 13, 2016 at 2:59 PM, magnum <john.magnum@...hmail.com> wrote:

> On 2016-02-13 17:45, Frank Wang wrote:
>
>> Awesome, thanks magnum! I know the opencl_*.c files call the kernels you
>> mentioned, but what files actually run the functions in the opencl_*.c
>> files?
>>
>
> I don't understand what you mean. The opencl_*.h are headers #include'd by
> the kernels. The format calls the kernel. One such format is
> opencl_office2013_fmt_plug.c.
>
> magnun
>
>
> My goal is write an implementation of just raw SHA256/SHA512 hashes using
>> openCL.
>>
>> Frank
>>
>> On Thu, Feb 4, 2016 at 1:54 AM, magnum <john.magnum@...hmail.com> wrote:
>>
>> On 2016-02-03 21:39, magnum wrote:
>>>
>>> On 2016-02-02 23:49, Frank Wang wrote:
>>>>
>>>> I am trying to run about 10 million raw SHA 512 hashes in my program and
>>>>> offloading it to a GPU will make it substantially faster. It seems like
>>>>> John the Ripper has this functionality, but it seems to be intertwined
>>>>> with
>>>>> the password cracking capabilities. Are there any SHA 512 OpenCL
>>>>> implementations that are easy to separate and integrate into my
>>>>> program?
>>>>> Possibly that already exist in John the Ripper?
>>>>>
>>>>>
>>>> I would think so. Our current GitHub code contains (among other
>>>> implementations) generic SHA512 macros in src/opencl_sha512.h which is
>>>>
>>>>
>>> Sorry, that should be opencl_sha2.h. The other file is an other
>>> implementation that I'm not well acquainted with.
>>>
>>> magnum
>>>
>>>
>>>
>>
>

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