Date: Tue, 3 Sep 2013 18:35:18 +0400 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: Daniel's weekly report #12 Daniel, On Tue, Sep 03, 2013 at 03:47:25PM +0200, D?niel Bali wrote: > CRC-32 could work. One question: what do you mean by CRC-32 as a JtR format? > Would this have to run inside the JtR "framework"? Yes. We already have a CRC-32 JtR format in jumbo, it works on CPU. You'd produce the same on GPU, using gcnasm for the GPU code, as a sample and a baseline for further work on JtR formats that use gcnasm. Since this is primarily a sample, please keep the code simple. Its speed is unimportant. In fact, it will certainly run slower than its CPU equivalent, because of all the data transfers to/from GPU (unless you implement mask mode on GPU, which Sayantan is working on - but you should not bother with that yet). We need a very basic/skeleton format showing how code written using gcnasm can be integrated into JtR. Alexander
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