linux-kernel - Re: [RFC] AES instead of SHA1 for /dev/urandom

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Date:	Wed, 12 Dec 2012 09:58:16 +0100
From:	Ondřej Bílka <neleai@...nam.cz>
To:	NeilBrown <neilb@...e.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [RFC] AES instead of SHA1 for /dev/urandom

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.

Ondra
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