Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754205AbXLHXs1 (ORCPT ); Sat, 8 Dec 2007 18:48:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752889AbXLHXsU (ORCPT ); Sat, 8 Dec 2007 18:48:20 -0500 Received: from THUNK.ORG ([69.25.196.29]:37317 "EHLO thunker.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752875AbXLHXsT (ORCPT ); Sat, 8 Dec 2007 18:48:19 -0500 Date: Sat, 8 Dec 2007 18:47:21 -0500 From: Theodore Tso To: Willy Tarreau Cc: Jeff Garzik , Matt Mackall , Mike McGrath , Jon Masters , Alan Cox , Ray Lee , Adrian Bunk , Marc Haber , linux-kernel@vger.kernel.org, hmh@debian.org Subject: Re: entropy gathering (was Re: Why does reading from /dev/urandom deplete entropy so much?) Message-ID: <20071208234721.GR17037@thunk.org> Mail-Followup-To: Theodore Tso , Willy Tarreau , Jeff Garzik , Matt Mackall , Mike McGrath , Jon Masters , Alan Cox , Ray Lee , Adrian Bunk , Marc Haber , linux-kernel@vger.kernel.org, hmh@debian.org References: <20071204223345.GJ19691@waste.org> <4756B50B.3060100@redhat.com> <20071205144934.GL7259@thunk.org> <1197099477.20786.149.camel@perihelion> <20071208173204.GI17037@thunk.org> <475AD585.7020908@redhat.com> <20071208174908.GJ17037@thunk.org> <20071208181525.GL19691@waste.org> <475AF241.5000809@garzik.org> <20071208204239.GG15227@1wt.eu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20071208204239.GG15227@1wt.eu> User-Agent: Mutt/1.5.15+20070412 (2007-04-11) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: tytso@thunk.org X-SA-Exim-Scanned: No (on thunker.thunk.org); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 714 Lines: 16 On Sat, Dec 08, 2007 at 09:42:39PM +0100, Willy Tarreau wrote: > I remember having installed openssh on an AIX machines years ago, and > being amazed by the number of sources it collected entropy from. Simple > commands such as "ifconfig -a", "netstat -i" and "du -a", "ps -ef", "w" > provided a lot of entropy. Well.... not as many bits of entropy as you might think. But every little bit helps, especially if some of it is not available to adversary. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/