Date: Sun, 26 Aug 2012 13:41:29 +0530 From: Sayantan Datta <std2048@...il.com> To: john-dev@...ts.openwall.com Subject: Re: bitslice DES on GPU On Sun, Aug 26, 2012 at 1:06 PM, Solar Designer <solar@...nwall.com> wrote: > Do you mean the base address gets changed on the CPU side or the GPU > side? Relative to what does it change? > > What problem does this create, exactly? > > I can interpret your statements/question in too many ways for me to try > answering directly right away. > > Please clarify. > > Thanks, > > Alexander > The base address of K array gets changed in the opencl kernel. In the DES_bs_init() function the addresses stored in of *KSp array are derived from the address of key bits array K. Now when the key bits array K is transferred to GPU side the base address of the K array gets changed thereby rendering the addresses stored in *KSp array invalid. I'm thinking to transfer a small section of code which generates the *KSp values to the kernel which should fix the problem. Regards, Sayantan Content of type "text/html" skipped
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