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Date: Wed, 8 Jan 2020 16:31:02 -0300
From: Ricardo CYRYLZ MIESZKO <cyrylz.mieszko@...il.com>
To: john-users@...ts.openwall.com
Subject: Re: opencl not finds the password. In CPU it founds.
I'll confirm but as Claudio said the problem is the max-len of the passwd
in opencl that is different than in CPU. Really don't know why this is
different but..
On Tue, Jan 7, 2020 at 1:00 PM Solar Designer <solar@...nwall.com> wrote:
> On Mon, Jan 06, 2020 at 05:00:36PM -0500, robertde12e wrote:
> > You want to know what I was told when I reported the same problem with
> wpapsk?
>
> You must be referring to:
>
> https://github.com/magnumripper/JohnTheRipper/issues/4187
>
> You didn't report the same problem as what Ricardo brought up in this
> thread. It only looks "the same" in that you had no success using your
> GPU, but the underlying issue is different. With the drivers setup (or
> lack thereof, maybe) that you had, programs like JtR couldn't see your
> GPU at all, so you ran OpenCL on CPU instead and that's not something
> we optimized for - you're better off not using OpenCL, then.
>
> In Ricardo's case, a GPU is seen, and even the self-test succeeds (or
> else JtR would have reported the failure), but somehow the password is
> not cracked.
>
> One thing in common, though, is that getting a reliably working setup
> with AMD GPU drivers can be tricky.
>
> > Use Windows
>
> Claudio did provide that response, and as you should have seen I
> immediately corrected him:
>
> "let's not say things like "please use Windows" nor any other OS.
> Saying that "I've tested on [this OS] and it worked and it was pretty
> easy" is OK, but saying "please use [this OS]" doesn't reflect our
> project's intent to support multiple OSes."
>
> Now you bring this up on this mailing list as if that correction was
> never made.
>
> > and to stop looking for bugs.
>
> No one ever said that, as far as I can see. On the contrary, Claudio
> said that "We assume you are genuinely thinking you are reporting a real
> bug to help the project." This would have been appropriate use of
> GitHub issues then. However, you did not in fact report a bug in JtR,
> and that's not what our use of GitHub issues is for - hence, your issue
> got closed. Your GPU not being found is an issue with your GPU driver
> setup, and not with JtR.
>
> > Same exact problem in Windows too.
>
> You posted so much content to that GitHub issue that it's unclear to me
> what problem you think you reported. You'd need to be specific.
>
> > I guess if you pretend the problem isn't there and don't look at it then
> it's ok, so stop looking for bugs use Windows it's your fault.I reality
> your not alone I had the same problem, solution there is none they don't
> care,
>
> I'm sorry you found our response unsatisfactory, but frankly there was
> little we could do with a problem report as non-specific as yours.
>
> > or do what I did move to social engineering, you can get a hundred times
> the work done in the time it takes John to get one password.
>
> Sure there are other approaches.
>
> On Sun, Jan 5, 2020 at 8:07 PM Ricardo CYRYLZ MIESZKO <
> cyrylz.mieszko@...il.com> wrote:
> > When I use john with wordlist and --format=dmg-opencl or
> > --format=7z-opencl it can't find the password. If I use without the
> opencl
> > it finds.
>
> I'll reply to Ricardo separately, and it's a pity that we now have these
> unrelated stories mixed up in the same thread.
>
> Please do not hijack existing threads like that.
>
> Alexander
>
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