From: Christian Borntraeger <borntraeger@de.ibm.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Rusty Russell <rusty@rustcorp.com.au>,
"H. Peter Anvin" <hpa@zytor.com>,
Johannes Berg <johannes@sipsolutions.net>,
virtualization@lists.linux-foundation.org,
Jeff Garzik <jeff@garzik.org>,
LKML <linux-kernel@vger.kernel.org>, Theodore Tso <tytso@mit.edu>,
Matt Mackall <mpm@selenic.com>
Subject: Re: [PATCH 2/2] lguest: virtio-rng support
Date: Sat, 17 May 2008 09:43:53 +0200 [thread overview]
Message-ID: <200805170943.54031.borntraeger@de.ibm.com> (raw)
In-Reply-To: <20080517064307.GA16857@gondor.apana.org.au>
Am Samstag, 17. Mai 2008 schrieb Herbert Xu:
> On Sat, May 17, 2008 at 04:28:03PM +1000, Rusty Russell wrote:
> >
> > But you did not address the DoS question: can we ignore it? Or are we
trading
> > off a DoS in the host against a potential security weakness in the guest?
>
> Why not do both? Use the host's urandom to make the guest at least
> unpredictable on start-up without increasing the guest's entropy,
> and use the host's random to actually increase the guest's entropy.
I think the proper solution would be to use the hosts /dev/hw_rng - if
available.
next prev parent reply other threads:[~2008-05-17 7:46 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-15 18:48 Virt RNG? Jeff Garzik
2008-05-15 19:53 ` Jeremy Fitzhardinge
2008-05-15 20:26 ` Dor Laor
2008-05-15 20:31 ` Christian Borntraeger
2008-05-15 20:44 ` Jeff Garzik
2008-05-15 20:43 ` Jeff Dike
2008-05-15 23:43 ` Rusty Russell
2008-05-16 0:07 ` Henrique de Moraes Holschuh
2008-05-16 5:31 ` [PATCH 1/2] virtio: hardware random device Rusty Russell
2008-05-16 5:39 ` [PATCH 2/2] lguest: virtio-rng support Rusty Russell
2008-05-16 10:49 ` Johannes Berg
2008-05-16 20:25 ` H. Peter Anvin
2008-05-17 4:46 ` Rusty Russell
2008-05-17 4:50 ` H. Peter Anvin
2008-05-17 6:28 ` Rusty Russell
2008-05-17 6:43 ` Herbert Xu
2008-05-17 7:43 ` Christian Borntraeger [this message]
2008-05-17 15:56 ` H. Peter Anvin
2008-05-17 7:47 ` Jeremy Fitzhardinge
2008-05-19 9:05 ` Rusty Russell
2008-05-19 9:10 ` Jeremy Fitzhardinge
2008-05-19 9:28 ` Rusty Russell
2008-05-19 9:45 ` Jeremy Fitzhardinge
2008-05-17 15:57 ` H. Peter Anvin
2008-05-16 7:31 ` [PATCH 1/2] virtio: hardware random device Christian Borntraeger
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