From: Oliver Neukum <oliver@neukum.name>
To: Marco Colombo <marco@esi.it>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] (0/4) Entropy accounting fixes
Date: Mon, 19 Aug 2002 18:29:52 +0200 [thread overview]
Message-ID: <200208191829.52241.oliver@neukum.name> (raw)
In-Reply-To: <Pine.LNX.4.44.0208191711500.26653-100000@Megathlon.ESI>
> Not at all. Let me (one process) read 1MB from /dev/urandom,
> and analyze it. If I can break SHA-1, I'm able to predict *future*
> /dev/urandom output, expecially if I keep draining bits from
> /dev/random.
True, but you cannot predict which task will read which part
of the output of urandom.
Also not all attackers can read from urandom.
If you really care, you might implement entropy pools
per user.
Regards
Oliver
next prev parent reply other threads:[~2002-08-19 16:26 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-18 2:15 Oliver Xymoron
2002-08-18 2:23 ` [PATCH] (1/4) " Oliver Xymoron
2002-08-18 2:26 ` [PATCH] (2/4) Update input drivers Oliver Xymoron
2002-08-18 2:29 ` [PATCH] (3/4) SA_RANDOM user fixup Oliver Xymoron
2002-08-18 2:32 ` [PATCH] (4/4) entropy batching update Oliver Xymoron
2002-08-18 2:30 ` [PATCH] (0/4) Entropy accounting fixes Linus Torvalds
2002-08-18 2:59 ` Oliver Xymoron
2002-08-18 3:08 ` Linus Torvalds
2002-08-18 3:25 ` Linus Torvalds
2002-08-18 4:42 ` Oliver Xymoron
2002-08-18 4:53 ` Linus Torvalds
2002-08-18 5:05 ` Dmitri
2002-08-18 6:18 ` Oliver Xymoron
2002-08-22 3:33 ` David Wagner
2002-08-18 10:30 ` Alan Cox
2002-08-18 15:08 ` Oliver Xymoron
2002-08-18 17:31 ` Jonathan Lundell
2002-08-22 3:27 ` David Wagner
2002-08-18 4:30 ` Oliver Xymoron
2002-08-21 8:44 ` Rogier Wolff
2002-08-21 12:47 ` Oliver Xymoron
2002-08-18 5:28 ` Andreas Dilger
2002-08-18 5:53 ` Oliver Xymoron
2002-08-22 3:25 ` David Wagner
2002-08-18 3:05 ` Linus Torvalds
2002-08-18 3:51 ` Robert Love
2002-08-18 4:01 ` Linus Torvalds
2002-08-18 5:38 ` Oliver Xymoron
2002-08-19 4:21 ` Theodore Ts'o
2002-08-19 10:15 ` Marco Colombo
2002-08-19 10:25 ` Oliver Neukum
2002-08-19 11:03 ` Marco Colombo
2002-08-19 14:22 ` Oliver Neukum
2002-08-19 15:21 ` Marco Colombo
2002-08-19 16:29 ` Oliver Neukum [this message]
2002-08-19 12:39 ` Oliver Xymoron
2002-08-18 6:31 ` Robert Love
2002-08-18 6:48 ` Oliver Xymoron
2002-08-18 4:06 ` dean gaudet
2002-08-18 4:44 ` Oliver Xymoron
2002-08-18 7:31 ` Bernd Eckenfels
2002-08-18 9:48 ` Ralf Baechle
2002-08-20 12:51 ` Bernd Eckenfels
2002-08-18 16:58 ` Robert Love
2002-08-18 10:25 ` Alan Cox
2002-08-19 10:47 ` Marco Colombo
2002-08-19 12:29 ` Alan Cox
2002-08-19 12:56 ` Marco Colombo
2002-09-08 3:43 ` D. Hugh Redelmeier
2002-09-08 18:03 ` David Wagner
2002-09-09 16:53 ` Oliver Xymoron
2002-09-09 16:58 ` David Wagner
2002-09-09 19:47 ` Oliver Xymoron
2002-09-09 23:22 ` David Wagner
2002-09-16 22:51 ` dean gaudet
2002-09-17 1:18 ` Oliver Xymoron
2002-09-09 18:54 ` Kent Borg
2002-09-09 19:57 ` Oliver Xymoron
2002-09-09 20:11 ` Kent Borg
2002-08-18 4:57 ` Oliver Xymoron
2002-08-18 4:28 ` Oliver Xymoron
2002-08-18 4:51 ` Linus Torvalds
2002-08-18 5:24 ` Oliver Xymoron
2002-08-18 16:59 ` Linus Torvalds
2001-11-02 10:34 ` Pavel Machek
2002-08-23 20:16 ` Linus Torvalds
2002-08-18 17:03 ` Robert Love
2002-08-18 17:31 ` Oliver Xymoron
2002-08-18 16:54 ` Robert Love
2002-08-18 17:18 ` Oliver Xymoron
2002-08-18 17:20 ` Robert Love
2002-08-19 5:43 ` Theodore Ts'o
2001-11-02 10:05 ` Pavel Machek
2002-08-19 6:06 ` *Challenge* Finding a solution (When kernel boots it does not display any system info) louie miranda
2002-08-19 7:30 ` Gilad Ben-Yossef
2002-08-19 7:30 ` Ryan Cumming
2002-08-20 0:55 ` louie miranda
2002-08-19 13:52 ` [PATCH] (0/4) Entropy accounting fixes Oliver Xymoron
2002-08-20 8:59 ` Tommi Kyntola
2002-08-20 13:21 ` Oliver Xymoron
2002-08-20 16:19 ` Tommi Kyntola
2002-08-20 17:22 ` Oliver Xymoron
2002-09-08 3:51 ` D. Hugh Redelmeier
2002-09-08 4:31 ` Oliver Xymoron
2002-08-18 4:57 David Brownell
2002-08-18 6:02 ` Oliver Xymoron
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