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Message-ID: <20131030082734.GB23388@openwall.com>
Date: Wed, 30 Oct 2013 12:27:34 +0400
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: Re: descrypt-opencl "section 0" fix
On Tue, Oct 29, 2013 at 07:51:16PM +0100, magnum wrote:
> On 2013-10-29 19:20, magnum wrote:
> >I do not get the difference between the above vs. having a built-in test
> >vector using the same data? In both cases, we call set_salt("VT"),
> >set_key(0) and finally crypt_all(1).
>
> OK, it's because during self-test, salt passed to crypt_all() is NULL so
> we don't really test that functionality yet, right?
I think so, yes. Although the bug was in host code, it was related to
on-GPU hash comparisons. To figure it out, I had to read the OpenCL
kernel code, and in particular the cmp() function, and only then return
to host code to find and fix the bug.
Alexander
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