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Date: Sat, 27 Jul 2013 18:06:14 +0530
From: Sayantan Datta <std2048@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: mask mode issues

Hi,

On Sat, Jul 27, 2013 at 3:28 PM, Lukas Odzioba <lukas.odzioba@...il.com>wrote:

> Sayantan,
> I am getting crashes when mask is invalid, maybe some kind of
> validation can help to avoid that.
>
> ukasz@...l:$ ./john -mask='?a?a?a' crackme -format=raw-md5-opencl
> Device 2: GeForce GTX TITAN
> Local worksize (LWS) 64, global worksize (GWS) 2097152
> Loaded 1 password hash (Raw-MD5-opencl [MD5 OpenCL (inefficient,
> development use only)])
> Press 'q' or Ctrl-C to abort, almost any other key for status
>
> START:
>
> (...x14)
>
> START:
> Segmentation fault (core dumped)
>
>
> ukasz@...l:$ ./john -mask=openwall crackme -format=raw-sha1-opencl
> (...)
> Segmentation fault (core dumped)
>

> Also your changes broke other modes and this is unacceptable:
> ukasz@...l:$ ./john -i crackme -format=raw-sha1-opencl
> Device 2: GeForce GTX TITAN
> Local worksize (LWS) 512, Global worksize (GWS) 2097152
> Loaded 1 password hash (Raw-SHA1-opencl [SHA1 OpenCL (inefficient,
> development use only)])
> New local worksize (LWS) 64
> Press 'q' or Ctrl-C to abort, almost any other key for status
> No given mask.Exiting...
>
>
> ukasz@...l:$ ./john -w crackme -format=raw-sha1-opencl
> (...)
> No given mask.Exiting...
>
> Lukas
>

I will fix these issues next week. Before the contest. Let me know if you
find anything else.

Regards,
Sayantan

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