Re: [PATCH,RFC] random: collect cpu randomness

[Kees Cook]

Hi Jörn,

On Sun, Feb 02, 2014 at 03:36:17PM -0500, Jörn Engel wrote:
> Collects entropy from random behaviour all modern cpus exhibit.  The
> scheduler and slab allocator are instrumented for this purpose.  How
> much randomness can be gathered is clearly hardware-dependent and hard
> to estimate.  Therefore the entropy estimate is zero, but random bits
> still get mixed into the pools.

Have you seen this work from PaX Team?

http://grsecurity.net/pipermail/grsecurity/2012-July/001093.html

See http://grsecurity.net/test/grsecurity-3.0-3.13.1-201402052349.patch
and search for PAX_LATENT_ENTROPY.

-Kees

-- 
Kees Cook                                            @outflux.net
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