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From: Jamie Lokier <jamie@shareable.org>
To: David Lang <david.lang@digitalinsight.com>
Cc: Andreas Dilger <adilger@clusterfs.com>,
	Matt Mackall <mpm@selenic.com>, Andrew Morton <akpm@osdl.org>,
	tytso@mit.edu, jmorris@intercode.com.au,
	linux-kernel@vger.kernel.org, davem@redhat.com
Subject: Re: [RFC][PATCH] Make cryptoapi non-optional?
Date: Mon, 18 Aug 2003 18:51:20 +0100	[thread overview]
Message-ID: <20030818175120.GD8044@mail.jlokier.co.uk> (raw)
In-Reply-To: <Pine.LNX.4.44.0308180956350.21012-100000@dlang.diginsite.com>

David Lang wrote:
> if you care about global uniqueness then you add in config values that the
> sysasmin sets to make it unique (could be MAC address, IP address, machine
> name, GPS coordinates, etc)

Even a good sysadmin cannot guarantee the MAC address is unique, IP
addresses are often duplicates (e.g. 192.168.1.x) unless you know they
aren't), and the machine name is likely to conflict with someone
else's in the world, but these are all good inputs to include.

> the only reason to add in a random value is if you are trying to protect
> yourself from a malicious sysadmin and there are security problems that
> will arise for other machines if a sysadmin can duplicate this ID.

Not just malicious sysadmins, but accidental conflicts due to
e.g. trusting your MAC address to be unique in the world, too.

-- Jamie

  reply	other threads:[~2003-08-18 17:52 UTC|newest]

Thread overview: 120+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-08-09  7:44 [RFC][PATCH] Make cryptoapi non-optional? Matt Mackall
2003-08-09  8:04 ` David S. Miller
2003-08-09 14:05   ` Matt Mackall
2003-08-09 17:39     ` David S. Miller
2003-08-09 19:46       ` Matt Mackall
2003-08-09 20:17         ` David S. Miller
2003-08-10  8:15           ` Matt Mackall
2003-08-10  8:32             ` virt_to_offset() (Re: [RFC][PATCH] Make cryptoapi non-optional?) YOSHIFUJI Hideaki / 吉藤英明
2003-08-10  8:30               ` David S. Miller
2003-08-10  9:02                 ` virt_to_offset() YOSHIFUJI Hideaki / 吉藤英明
2003-08-11 18:21                   ` virt_to_offset() David Mosberger
2003-08-12  2:46                     ` virt_to_offset() David S. Miller
2003-08-10  9:05                 ` virt_to_offset() (Re: [RFC][PATCH] Make cryptoapi non-optional?) Matt Mackall
2003-08-10  9:04                   ` David S. Miller
2003-08-10 11:00                     ` [PATCH 1/9] introduce virt_to_pagoff() YOSHIFUJI Hideaki / 吉藤英明
2003-08-10 11:00                     ` [PATCH 2/9] convert crypto to virt_to_pageoff() YOSHIFUJI Hideaki / 吉藤英明
2003-08-10 11:05                     ` [PATCH 3/9] convert net " YOSHIFUJI Hideaki / 吉藤英明
2003-08-10 11:07                     ` [PATCH 4/9] convert drivers/block " YOSHIFUJI Hideaki / 吉藤英明
2003-08-10 11:09                     ` [PATCH 5/9] convert drivers/ide " YOSHIFUJI Hideaki / 吉藤英明
2003-08-10 11:10                     ` [PATCH 6/9] convert drivers/net " YOSHIFUJI Hideaki / 吉藤英明
2003-08-10 11:10                     ` [PATCH 7/9] convert drivers/scsi " YOSHIFUJI Hideaki / 吉藤英明
2003-08-10 11:31                       ` Christoph Hellwig
2003-08-10 11:51                         ` David S. Miller
2003-08-10 12:03                           ` YOSHIFUJI Hideaki / 吉藤英明
2003-08-10 14:54                             ` Christoph Hellwig
2003-08-10 14:51                           ` Christoph Hellwig
2003-08-10 13:54                         ` Russell King
2003-08-10 13:55                         ` Russell King
2003-08-10 14:55                           ` Christoph Hellwig
2003-08-11  5:21                           ` David S. Miller
2003-08-10 11:10                     ` [PATCH 8/9] convert drivers/usb " YOSHIFUJI Hideaki / 吉藤英明
2003-08-10 11:10                     ` [PATCH 9/9] convert fs/jbd " YOSHIFUJI Hideaki / 吉藤英明
2003-08-11  2:15             ` [RFC][PATCH] Make cryptoapi non-optional? Jamie Lokier
2003-08-11  2:38               ` Matt Mackall
2003-08-11  4:54               ` David S. Miller
2003-08-11  5:17                 ` Jamie Lokier
2003-08-13  5:01                 ` [Numbers][PATCH] " Matt Mackall
2003-08-10 14:46           ` [RFC][PATCH] " James Morris
2003-08-09 14:33 ` Matt Mackall
2003-08-09 17:13   ` Jamie Lokier
2003-08-09 17:33     ` Matt Mackall
2003-08-10 13:18       ` James Morris
2003-08-10 17:45         ` Matt Mackall
2003-08-11  2:09           ` Jamie Lokier
2003-08-11  2:35             ` Matt Mackall
2003-08-11  4:59               ` Jamie Lokier
2003-08-11  5:04                 ` Matt Mackall
2003-08-11  5:20                   ` Jamie Lokier
2003-08-11  5:54                     ` Matt Mackall
2003-08-11  6:24                       ` Jamie Lokier
2003-08-11  4:58             ` David Wagner
2003-08-11  5:36               ` Jamie Lokier
2003-08-11 19:21                 ` David Wagner
2003-08-13 19:37                   ` Jamie Lokier
2003-08-13  3:52             ` Theodore Ts'o
2003-08-13 15:44               ` i810_rng.o on various Dell models Jim Carter
2003-08-13 16:15                 ` Jeff Garzik
2003-08-13 18:43                   ` Jamie Lokier
2003-08-13 18:36               ` [RFC][PATCH] Make cryptoapi non-optional? Jamie Lokier
2003-08-15  0:16                 ` Network Card Entropy? was: " Mike Fedyk
2003-08-15  0:22                   ` Robert Love
2003-08-13  3:20           ` Theodore Ts'o
2003-08-13  4:06             ` Matt Mackall
2003-08-14 16:53               ` Val Henson
2003-08-14 19:40                 ` David Wagner
2003-08-14 20:07                   ` Chris Friesen
2003-08-14 21:36                   ` Jamie Lokier
2003-08-15  0:25                     ` Val Henson
2003-08-15 11:47                       ` Jamie Lokier
2003-08-15  0:17                   ` Val Henson
2003-08-15  1:45                     ` David Wagner
2003-08-15  2:21                       ` Matt Mackall
2003-08-15  7:30                     ` Andries Brouwer
2003-08-15  7:40                       ` David S. Miller
2003-08-15  7:55                         ` Andries Brouwer
2003-08-15  8:06                           ` Måns Rullgård
2003-08-15  8:11                             ` Nick Piggin
2003-08-15 15:11                             ` Matt Mackall
2003-08-15 22:16                               ` Jamie Lokier
2003-08-15 20:22                           ` Val Henson
2003-08-16  6:27                             ` David Wagner
2003-08-18  4:25                               ` Val Henson
2003-08-15  8:09                         ` Nick Piggin
2003-08-15 15:03                       ` Matt Mackall
2003-08-15 17:04                         ` Andries Brouwer
2003-08-15 22:05                           ` Jamie Lokier
2003-08-15 22:02                         ` Jamie Lokier
2003-08-15 12:48                     ` Jamie Lokier
2003-08-15 22:34                     ` Theodore Ts'o
2003-08-15 22:12               ` Theodore Ts'o
2003-08-15 23:35                 ` James Morris
2003-08-16 15:51                   ` Matt Mackall
2003-08-17 14:37                     ` James Morris
2003-08-17 15:30                       ` Matt Mackall
2003-08-15 23:55                 ` Matt Mackall
2003-08-16  0:05                   ` Andrew Morton
2003-08-16  0:58                     ` Jamie Lokier
2003-08-16  4:57                       ` Matt Mackall
2003-08-16  4:38                     ` Matt Mackall
2003-08-16  5:03                       ` Andrew Morton
2003-08-16  5:39                         ` Matt Mackall
2003-08-18  6:43                       ` Andreas Dilger
2003-08-18  6:55                         ` David Lang
2003-08-18 11:59                           ` Jamie Lokier
2003-08-18 12:11                             ` Måns Rullgård
2003-08-18 13:33                               ` Jamie Lokier
2003-08-18 17:03                             ` David Lang
2003-08-18 17:51                               ` Jamie Lokier [this message]
2003-08-22  4:28                           ` David Wagner
2003-08-25  4:29                             ` Jamie Lokier
2003-08-18 15:20                         ` Matt Mackall
2003-08-18  3:23                   ` Theodore Ts'o
2003-08-18 15:46                     ` Matt Mackall
2003-08-10  2:07   ` Robert Love
2003-08-10  3:14     ` Matt Mackall
2003-08-10  3:49       ` David S. Miller
2003-08-10  4:01         ` Robert Love
2003-08-10  4:07           ` Robert Love
2003-08-16 20:40 Adam J. Richter
2003-08-17  4:28 ` Matt Mackall

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