linux-kernel - Re: [PATCH] random: mix all saved registers into entropy pool

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Date:	Wed, 21 May 2014 16:38:11 -0400
From:	Jörn Engel <joern@...fs.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Theodore Ts'o <tytso@....edu>, "H. Peter Anvin" <hpa@...or.com>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] random: mix all saved registers into entropy pool

On Wed, 21 May 2014 21:39:05 +0200, Andi Kleen wrote:
> 
> > I think leaking of private keys or similar information is not a
> > concern.  But please prove me wrong.  Better you now than someone else
> > later.
> 
> While I don't have a concrete exploit it seems seems dangerous to me. 
> The LibreSSL people just removed a similar behavior from OpenSSL.

Btw, if your concern were justified, that would also speak volumes
about the quality of our random generator - with or without my patch.
Either you are wrong or we have a real problem on our hands already.

Jörn

--
This above all: to thine own self be true.
-- Shakespeare
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