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Date: Wed, 25 Apr 2012 05:11:07 +0400
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: Re: SHA-256 code from Bitcoin miners

On Tue, Apr 24, 2012 at 09:12:07PM -0300, Claudio Andr? wrote:
> Hi, I've been looking at these miners for a while. But since i'm not a 
> criptographic guy, i haven't found (easy) good ideas.
> 
> But, now looking at some recent opencl files in this "cgminer", i 
> noticed there are some ideas and/or probably the correct syntax of 
> something i failed to use in the past.
> 
> I'll try the opencl usage part and i'll report.

Thanks.  Just to make it clear: for suitably licensed source files, we
can even reuse the code as-is (and then modify it to fit our interfaces,
to optimize it further, etc.)  Not just take some ideas from there.

I suspect that the OpenCL kernels in cgminer readily have faster SHA-256
code than ours.

For other hash types such as SHA-512, indeed we can only take ideas (and
I do recall that you worked on SHA-512 specifically so far).

Alexander

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