From: daw@cs.berkeley.edu (David Wagner)
To: linux-kernel@vger.kernel.org
Subject: Re: Entropy Pool Contents
Date: Mon, 27 Nov 2006 19:33:05 +0000 (UTC) [thread overview]
Message-ID: <ekfehh$kbu$1@taverner.cs.berkeley.edu> (raw)
In-Reply-To: 456B3483.4010704@cfl.rr.com
Phillip Susi wrote:
>Why are non root users allowed write access in the first place? Can't
>the pollute the entropy pool and thus actually REDUCE the amount of good
>entropy?
Nope, I don't think so. If they could, that would be a security hole,
but /dev/{,u}random was designed to try to make this impossible, assuming
the cryptographic algorithms are secure.
After all, some of the entropy sources come from untrusted sources and
could be manipulated by an external adversary who doesn't have any
account on your machine (root or non-root), so the scheme has to be
secure against introduction of maliciously chosen samples in any event.
next prev parent reply other threads:[~2006-11-27 19:39 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 [this message]
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
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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