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Date:	Thu, 6 Feb 2014 14:20:02 -0800
From:	Kees Cook <>
To:	Jörn Engel <>
Cc:	"Theodore Ts'o" <>, "H. Peter Anvin" <>,
	Linux Kernel Developers List <>,,,,,,,,
Subject: Re: [PATCH,RFC] random: collect cpu randomness

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?

and search for PAX_LATENT_ENTROPY.


Kees Cook                                  
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