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Date:	Thu, 6 Feb 2014 17:21:51 -0500
From:	Dave Taht <>
To:	Kees Cook <>
Cc:	Jörn Engel <>,
	"Theodore Ts'o" <>, "H. Peter Anvin" <>,
	Linux Kernel Developers List <>,
	"Maciej W. Rozycki" <>,
	Ralf Baechle <>,
	John Crispin <>,
	Andrew McGregor <>,
	Stephan Mueller <>,,
Subject: Re: [PATCH,RFC] random: collect cpu randomness

On Thu, Feb 6, 2014 at 5:20 PM, Kees Cook <> wrote:
> 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?
> See
> and search for PAX_LATENT_ENTROPY.

The hardware rng world just got easier with the "hashlet".

Kernel driver wanted...

> -Kees
> --
> Kees Cook                                  

Dave Täht

Fixing bufferbloat with cerowrt:
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