Date: Tue, 7 Jan 2020 10:28:07 -0300 From: Claudio André <claudioandre.br@...il.com> To: john-users@...ts.openwall.com Subject: AMD and MacOS OpenCL issues Hi We can easily find errors in the Apple OpenCL runtime and in AMD drivers. If you intend to actually crack using any of these, make sure that all target formats are NOT problematic on these "platforms". Driver errors are difficult to troubleshoot. And we need volunteers working on it. We are aware of several bugs. Besides, OpenCL and CPU formats are TWO DIFFERENT formats: - the implementation details and limits are NOT the same. - the maximum length, the supported algorithms, and so on, differ. Something that is crackable using a CPU format may be not crackable using the OpenCL format. And, please: - provide (in private) the problematic file. The hash created by a *2john tool, at least. ---------- BTW: and that's my opinion, we desperately need hardware to test JtR. I recently discovered that it may be more complicated to use AMD hardware nowadays (https://github.com/magnumripper/JohnTheRipper/issues/4188). Devs need help. Claudio
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