From: root@mauve.demon.co.uk
To: jamie@shareable.org (Jamie Lokier)
Cc: ragnar@linalco.com (Ragnar Hojland Espinosa),
davids@webmaster.com (David Schwartz), tss@iki.fi (Timo Sirainen),
linux-kernel@vger.kernel.org
Subject: Re: Lockless file reading
Date: Thu, 28 Aug 2003 18:26:49 +0100 (BST) [thread overview]
Message-ID: <200308281726.SAA24033@mauve.demon.co.uk> (raw)
In-Reply-To: <20030828130326.GF6800@mail.jlokier.co.uk> from "Jamie Lokier" at Aug 28, 2003 02:03:26 PM
>
> Ragnar Hojland Espinosa wrote:
> > It can happen. It happened to me with two gifs. FWIW.
>
> Probability on the order of 2^-32 with MD5 any-pairs collision.
> (It's not usual to have so many GIFs to compare, though :)
> SHA is better, and both probably have some weakness that increases the
> probability of collision.
>
> Do you still have the GIFs?
MD5 is 128 bit output, so that's around 2^64 pairs before you have a birthday.
There arn't that many GIFs in the world.
I'd be really surprised if there were that many pictures in the world.
next prev parent reply other threads:[~2003-08-28 17:31 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-27 12:37 Lockless file reading Timo Sirainen
2003-08-27 12:42 ` Martin Konold
2003-08-27 12:52 ` Timo Sirainen
2003-08-27 13:40 ` Richard B. Johnson
2003-08-27 14:56 ` Timo Sirainen
2003-08-27 23:39 ` Jamie Lokier
2003-08-28 0:52 ` Timo Sirainen
2003-08-27 18:42 ` Nagendra Singh Tomar
2003-08-28 8:40 ` Timo Sirainen
2003-08-27 21:15 ` Nagendra Singh Tomar
2003-08-28 9:35 ` Timo Sirainen
2003-08-27 21:52 ` Nagendra Singh Tomar
2003-08-28 13:26 ` Matthias Andree
2003-08-28 9:17 ` David Schwartz
2003-08-28 8:42 ` Valdis.Kletnieks
2003-08-28 20:13 ` David B. Stevens
2003-08-28 1:50 ` Jamie Lokier
2003-08-28 3:17 ` Timo Sirainen
2003-08-28 6:01 ` Valdis.Kletnieks
2003-08-28 6:13 ` Jamie Lokier
2003-08-28 8:57 ` Timo Sirainen
2003-08-28 9:56 ` David Schwartz
2003-08-28 10:26 ` Timo Sirainen
2003-08-27 22:58 ` Nagendra Singh Tomar
2003-08-28 12:18 ` Jamie Lokier
2003-08-28 0:39 ` Nagendra Singh Tomar
2003-08-28 13:00 ` Jamie Lokier
2003-08-28 1:06 ` Nagendra Singh Tomar
2003-08-28 21:49 ` Bernd Eckenfels
2003-08-28 12:01 ` Jamie Lokier
2003-08-28 13:28 ` Timo Sirainen
2003-08-28 20:24 ` David Schwartz
2003-08-28 12:44 ` Ragnar Hojland Espinosa
2003-08-28 13:03 ` Jamie Lokier
2003-08-28 17:26 ` root [this message]
2003-08-28 17:35 ` Jamie Lokier
2003-08-28 18:10 ` root
2003-08-28 21:59 ` Bernd Eckenfels
2003-08-28 23:02 ` Jamie Lokier
2003-08-28 23:44 ` Lockless file readingu root
2003-08-29 10:00 ` jlnance
2003-08-29 11:55 ` David Schwartz
2003-08-29 15:43 ` William Lee Irwin III
2003-08-28 20:37 ` Lockless file reading David Schwartz
2003-08-28 22:11 ` Bernd Eckenfels
2003-08-28 23:00 ` Jamie Lokier
2003-08-29 0:47 ` David Schwartz
2003-08-28 9:13 ` Martin Konold
2003-08-28 9:27 ` Timo Sirainen
2003-08-28 9:48 ` Martin Konold
2003-08-28 0:03 ` Jamie Lokier
2003-08-28 12:08 ` Richard B. Johnson
2003-08-28 12:39 ` Jamie Lokier
2003-08-28 10:08 ` Matthias Andree
2003-08-28 10:54 ` Robin Rosenberg
2003-08-28 12:42 ` Jamie Lokier
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