From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268114AbUH1CrO (ORCPT ); Fri, 27 Aug 2004 22:47:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268115AbUH1CrO (ORCPT ); Fri, 27 Aug 2004 22:47:14 -0400 Received: from science.horizon.com ([192.35.100.1]:35657 "HELO science.horizon.com") by vger.kernel.org with SMTP id S268114AbUH1CrN (ORCPT ); Fri, 27 Aug 2004 22:47:13 -0400 Date: 28 Aug 2004 02:47:12 -0000 Message-ID: <20040828024712.29061.qmail@science.horizon.com> From: linux@horizon.com To: jlcooke@engsoc.org, linux-kernel@vger.kernel.org Subject: Re: Preliminary paper on collisions in SHA-2 Family Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org The paper is NOT reporting a collision or attack; it's just reporting a flaw in a previous security claim. An attack was claimed to be ineffective on SHA-2 because one step was computationally very expensive. This paper shows that it's not all that expensive, so the security claim needs to be re-examined; perhaps the attack can be made to work after all.