From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fredrik Skolmli Subject: Re: About git and the use of SHA-1 Date: Tue, 29 Apr 2008 22:50:31 +0200 Message-ID: <20080429205031.GA14547@frsk.net> References: <20080429124152.GB6160@dpotapov.dyndns.org> <481733A3.4010802@op5.se> <7f9d599f0804290859y6a579302m5db9f7f827b320a4@mail.gmail.com> <7f9d599f0804291048n2c706f3amdf159ffe86bdbc8@mail.gmail.com> <7f9d599f0804291102j4a30c344h18d12d03a6d5953b@mail.gmail.com> <7f9d599f0804291331v2f44bee1y29c1580d68a3107a@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Daniel Barkalow , Nicolas Pitre , Andreas Ericsson , Dmitry Potapov , Henrik Austad , git@vger.kernel.org To: Geoffrey Irving X-From: git-owner@vger.kernel.org Tue Apr 29 22:51:44 2008 connect(): Connection refused Return-path: Envelope-to: gcvg-git-2@gmane.org Received: from vger.kernel.org ([209.132.176.167]) by lo.gmane.org with esmtp (Exim 4.50) id 1Jqwna-0001Kd-IC for gcvg-git-2@gmane.org; Tue, 29 Apr 2008 22:51:39 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761631AbYD2Uuu (ORCPT ); Tue, 29 Apr 2008 16:50:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761482AbYD2Uut (ORCPT ); Tue, 29 Apr 2008 16:50:49 -0400 Received: from cassarossa.samfundet.no ([129.241.93.19]:53965 "EHLO cassarossa.samfundet.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761261AbYD2Uut (ORCPT ); Tue, 29 Apr 2008 16:50:49 -0400 Received: from asterix.samfundet.no ([2001:700:300:1800::f] ident=postfix) by cassarossa.samfundet.no with esmtp (Exim 4.63) (envelope-from ) id 1JqwmV-0006uV-Sf; Tue, 29 Apr 2008 22:50:32 +0200 Received: by asterix.samfundet.no (Postfix, from userid 1000) id D0975A60359; Tue, 29 Apr 2008 22:50:31 +0200 (CEST) Content-Disposition: inline In-Reply-To: <7f9d599f0804291331v2f44bee1y29c1580d68a3107a@mail.gmail.com> User-Agent: Mutt/1.5.13 (2006-08-11) Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: On Tue, Apr 29, 2008 at 01:31:51PM -0700, Geoffrey Irving wrote: > I sincerely hope that pdf/postscript don't allow the internal > rendering code to branch based on the current date. That would be an > absurd security hole, and would indeed make you entirely correct. If > you actually know that it is possible to write that in postscript, I > would very much want to see an example. Have a look at * http://th.informatik.uni-mannheim.de/People/Lucks/HashCollisions/letter_of_rec.ps vs * http://th.informatik.uni-mannheim.de/People/Lucks/HashCollisions/order.ps both found on a website[1] already mentioned[2] in this thread. :-) [1]: http://th.informatik.uni-mannheim.de/People/Lucks/HashCollisions/ [2]: http://marc.info/?l=git&m=120949349923584&w=2 - F -- Regards, Fredrik Skolmli