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Date:	Tue, 1 Jan 2013 23:50:29 +0100
From:	Pavel Machek <pavel@....cz>
To:	NeilBrown <neilb@...e.de>
Cc:	Ondřej Bílka <neleai@...nam.cz>,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC] AES instead of SHA1 for /dev/urandom

On Wed 2012-12-12 20:10:16, NeilBrown wrote:
> On Wed, 12 Dec 2012 09:58:16 +0100 Ondřej Bílka <neleai@...nam.cz> wrote:
> 
> > On Wed, Dec 12, 2012 at 01:08:26PM +1100, NeilBrown wrote:
> > > On Wed, 12 Dec 2012 03:03:54 +0100 Ondřej Bílka <neleai@...nam.cz> wrote:
> > > 
> > > > I consider to speed-up /dev/urandom on recent intel processors by
> > > > using hardware aes. Same for accelerated aes crypto.
> > > > 
> > > > Would you accept a patch if I wrote it?
> > > 
> > > Have you read  https://lwn.net/Articles/525459  ?
> > > 
> > Yes
> > > In particular the paragraph containing:
> > > 
> > >    A member of the audience asked why the kernel couldn't just do away with
> > >    the existing system and use the HWRNG directly.
> > > 
> > > Does that answer your question in any way?
> > > 
> > No as AES is a HWRNG about as much as horse is type of automobile.
> 
> Yes, of course.  Thanks.

Dunno. Some people don't trust HWRNG for various reasons.... (what if
it malfunctions? what if it is backdoored?)

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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