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Message-ID: <dc97951b4a3397f683b2c8369e8eb796@smtp.hushmail.com>
Date: Tue, 3 Jun 2025 12:30:29 +0200
From: magnum <magnumripper@...hmail.com>
To: john-users@...ts.openwall.com
Subject: Re: md5crypt-long works in John but not in hashcat
On 2025-06-02 07:05, Shawn Tayler wrote:
> Just curious what you are doing different in JTR on your
> format md5crypt-long. JTR cracks the hashes straight away but
> I don't have cuda support with it. I have cuda on hashcat but
> it doesn't crack over there.
>
> What are you guys doing differently?
>
> Is there a document to walk me through getting CUDA support on
> JTR?
>
> Thanks for all the great help in the past.
Does any JtR format work with CUDA? If so, you're actually running
OpenCL then (which comes with CUDA). Our actual CUDA support was
experimental and only had a few formats. We dropped it years ago in
favor of OpenCL as the latter is portable.
Other than that, the md5crypt-long format is CPU-only. You're supposed
to run md5crypt-opencl and then (or in parallel) md5crypt-long with
--min-len=16. We should definitely support passwords longer that 15 with
OpenCL but no-one has contributed that and I'm too stupid to understand
the optimizations so my tries have failed.
magnum
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