From: Phillip Susi <psusi@cfl.rr.com>
To: Martin Mares <mj@ucw.cz>
Cc: David Wagner <daw-usenet@taverner.cs.berkeley.edu>,
linux-kernel@vger.kernel.org
Subject: Re: Entropy Pool Contents
Date: Tue, 28 Nov 2006 12:22:23 -0500 [thread overview]
Message-ID: <456C704F.3050008@cfl.rr.com> (raw)
In-Reply-To: <mj+md-20061128.131233.3594.atrey@ucw.cz>
Martin Mares wrote:
> More importantly, it should be possible for root to write to /dev/random
> _without_ increasing the entropy count, for example when restoring random
> pool contents after reboot. In such cases you want the pool to contain
> at least some unpredictable data before real entropy arrives, so that
> /dev/urandom cannot be guessed, but you unless you remember the entropy
> counter as well, you should not add any entropy.
After a reboot the entropy estimate starts at zero, so if you are adding
data to the pool from the previous boot, you DO want the estimate to
increase because you are, in fact, adding entropy.
next prev parent reply other threads:[~2006-11-28 17:21 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-22 23:54 Entropy Pool Contents Gunter Ohrner
2006-11-22 23:59 ` Gunter Ohrner
2006-11-23 0:10 ` Jan Engelhardt
2006-11-23 21:40 ` Gunter Ohrner
2006-11-27 16:16 ` Phillip Susi
2006-11-27 16:19 ` Chris Friesen
2006-11-27 18:54 ` Phillip Susi
2006-11-27 19:33 ` David Wagner
2006-11-27 20:38 ` Phillip Susi
2006-11-27 20:40 ` David Wagner
2006-11-27 21:52 ` Kyle Moffett
2006-11-28 4:17 ` David Wagner
2006-11-28 5:19 ` Ben Pfaff
2006-11-28 12:13 ` Henrique de Moraes Holschuh
2006-11-28 12:58 ` David Wagner
2006-11-28 13:32 ` Eran Tromer
2006-11-28 13:15 ` Martin Mares
2006-11-28 17:22 ` Phillip Susi [this message]
2006-11-28 17:24 ` Martin Mares
2006-11-28 17:46 ` Phillip Susi
2006-11-28 17:49 ` Martin Mares
2006-11-28 18:40 ` Phillip Susi
2006-11-28 21:05 ` Martin Mares
2006-11-29 20:04 ` Phillip Susi
2006-11-28 17:42 ` Phillip Susi
2006-11-28 17:59 ` Martin Mares
2006-11-28 22:50 ` Eran Tromer
2006-11-27 22:21 ` Gunter Ohrner
2006-11-24 0:48 ` Theodore Tso
2006-11-24 1:01 ` Jeff Garzik
2006-11-23 20:54 ` Lennart Sorensen
2006-11-23 21:34 ` Gunter Ohrner
2006-11-23 21:04 ` Jeff Garzik
2006-11-23 21:43 ` Gunter Ohrner
2006-11-26 1:26 ` Folkert van Heusden
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