From: Jon Masters <jonmasters@gmail.com>
To: Bernard Normier <bernard@zeroc.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Concurrent access to /dev/urandom
Date: Mon, 29 Nov 2004 22:47:29 +0000 [thread overview]
Message-ID: <35fb2e5904112914476df48518@mail.gmail.com> (raw)
In-Reply-To: <006001c4d4c2$14470880$6400a8c0@centrino>
On Sat, 27 Nov 2004 15:45:49 -0500, Bernard Normier <bernard@zeroc.com> wrote:
> I use /dev/urandom to generate UUIDs by reading 16 random bytes from
> /dev/urandom (very much like e2fsprogs' libuuid).
Why not use /dev/random for such data instead?
/dev/urandom suffers from a poor level of entropy if you keep reading
from it over and over again whereas the alternative can block until it
has more randomness available.
Cheers,
Jon.
next prev parent reply other threads:[~2004-11-29 23:08 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-27 20:45 Concurrent access to /dev/urandom Bernard Normier
2004-11-27 20:56 ` Jan Engelhardt
2004-11-27 21:15 ` Bernard Normier
2004-11-27 21:22 ` Jan Engelhardt
2004-11-28 20:58 ` Bernard Normier
2004-12-07 23:41 ` Bernard Normier
2004-12-08 1:28 ` Theodore Ts'o
2004-12-08 1:56 ` Bernard Normier
2004-12-08 19:21 ` Theodore Ts'o
2004-12-08 20:15 ` Bernard Normier
2004-12-08 21:56 ` Matt Mackall
2004-12-09 1:57 ` Theodore Ts'o
2004-12-09 2:46 ` andyliu
2004-12-09 4:55 ` Matt Mackall
2004-12-09 2:58 ` Matt Mackall
2004-12-09 21:29 ` Matt Mackall
2004-12-10 4:47 ` Matt Mackall
2004-12-10 16:35 ` Theodore Ts'o
2004-12-10 18:28 ` Matt Mackall
2004-12-10 21:28 ` Theodore Ts'o
2004-12-10 22:23 ` Matt Mackall
2004-12-11 0:22 ` Adam Heath
2004-12-11 1:10 ` Matt Mackall
2004-12-11 17:33 ` Theodore Ts'o
2004-12-11 19:58 ` Adam Heath
2004-12-11 20:40 ` Matt Mackall
2004-12-12 16:19 ` Pavel Machek
2004-12-11 0:19 ` Adam Heath
2004-12-09 3:10 ` David Lang
2004-12-09 4:52 ` Matt Mackall
2004-12-09 6:36 ` Theodore Ts'o
2004-11-29 22:47 ` Jon Masters [this message]
2004-11-29 23:14 ` Bernard Normier
2004-11-29 23:43 ` Sven-Haegar Koch
2004-11-30 2:31 ` David Schwartz
2004-11-30 4:14 ` Kyle Moffett
2004-11-30 8:23 ` Jan Engelhardt
2004-11-30 18:50 ` David Schwartz
2004-11-29 23:42 ` David Wagner
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