[Cryptech Tech] Cleanup of chacha

[Olof Kindgren]

On Wed, Dec 28, 2016 at 11:17 AM, Joachim Strömbergson <joachim at secworks.se>
wrote:

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> Aloha!
>
> I've just merged a cleaned up version of the chacha core to Cryptech.
> The API has not changed (besides bumping version minor from 80 to 81),
> but the code is substantially more compact.
>
> The major behavioral change is that while the core includes four QR
> modules, the way they were used they really didn't work in parallel
> which meant that performance was much lower that what it should be. For
> Cryptech this means that random number generation (and thus key
> generation etc) should see improved performance.
>
> Implementation wise, the API address logic has been simplified.
> Registers for key and data has also been changed syntax wise to use
> Verilog two dimensional arrays. All tools (simulators, synthesis/build
> tools) I have access to including ISE, ModelSim, Quartus parses this
> correctly.
>
> The _core previously sampled inputs into registers. These registers has
> been removed which means that if _core is used without the top, the
> caller must ensure that the inputs are stable.
>
>
> - --
> Med vänlig hälsning, Yours
>
> Joachim Strömbergson - Alltid i harmonisk svängning.
> ========================================================================
>  Joachim Strömbergson          Secworks AB          joachim at secworks.se
> ========================================================================
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Is the copyright year for chacha_core.v supposed to change from 2014 to
2011?

//Olof
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