From: Arnd Bergmann <arnd@arndb.de>
To: Jan Glauber <jan.glauber@de.ibm.com>
Cc: linux-crypto <linux-crypto@vger.kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH] Pseudo-random number generator
Date: Thu, 7 Dec 2006 19:43:13 +0100 [thread overview]
Message-ID: <200612071943.14153.arnd@arndb.de> (raw)
In-Reply-To: <1165504796.5607.17.camel@bender>
On Thursday 07 December 2006 16:19, Jan Glauber wrote:
> Hm, why is /dev/urandom implemented in the kernel?
>
> It could be done completely in user-space (like libica already does)
> but I think having a device node where you can read from is the simplest
> implementation. Also, if we can solve the security flaw we could use it
> as replacement for /dev/urandom.
urandom is more useful, because can't be implemented in user space at
all. /dev/urandom will use the real randomness from the kernel as a seed
without depleting the entropy pool. How does your /dev/prandom device
compare to /dev/urandom performance-wise? If it can be made to use
the same input data and it turns out to be significantly faster, I can
see some use for it.
Arnd <><
next prev parent reply other threads:[~2006-12-07 18:43 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-01 13:19 [RFC][PATCH] Pseudo-random number generator Jan Glauber
2006-12-01 13:39 ` Alan
2006-12-01 15:20 ` Jan Glauber
2006-12-01 15:37 ` Alan
2006-12-04 16:15 ` Valdis.Kletnieks
2006-12-05 13:07 ` Jan Glauber
2007-01-16 14:07 ` Jan Glauber
2006-12-07 15:06 ` Arnd Bergmann
2006-12-07 15:19 ` Jan Glauber
2006-12-07 18:43 ` Arnd Bergmann [this message]
2006-12-08 11:42 ` Jan Glauber
[not found] <7ngD0-8fX-11@gated-at.bofh.it>
[not found] ` <7ngMA-8D-39@gated-at.bofh.it>
[not found] ` <7niv3-4sQ-21@gated-at.bofh.it>
[not found] ` <7niEE-4Mk-5@gated-at.bofh.it>
2006-12-01 17:33 ` Bodo Eggert
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