From owner-freebsd-hackers@FreeBSD.ORG Thu Mar 3 20:43:12 2005 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6924B16A4CE for ; Thu, 3 Mar 2005 20:43:12 +0000 (GMT) Received: from critter.freebsd.dk (f170.freebsd.dk [212.242.86.170]) by mx1.FreeBSD.org (Postfix) with ESMTP id BAA4C43D49 for ; Thu, 3 Mar 2005 20:43:11 +0000 (GMT) (envelope-from phk@critter.freebsd.dk) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.13.1/8.13.1) with ESMTP id j23KhA08010984; Thu, 3 Mar 2005 21:43:10 +0100 (CET) (envelope-from phk@critter.freebsd.dk) To: Todd Vierling From: "Poul-Henning Kamp" In-Reply-To: Your message of "Thu, 03 Mar 2005 14:37:24 EST." Date: Thu, 03 Mar 2005 21:43:10 +0100 Message-ID: <10983.1109882590@critter.freebsd.dk> Sender: phk@critter.freebsd.dk cc: ALeine cc: elric@imrryr.org cc: "Perry E. Metzger" cc: hackers@freebsd.org cc: tech-security@NetBSD.org cc: ticso@cicely.de Subject: Re: FUD about CGD and GBDE X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Mar 2005 20:43:12 -0000 In message , Todd Vierling writes: >On Thu, 3 Mar 2005, Poul-Henning Kamp wrote: > >> At the time where I wrote GBDE, the best that was offered was CGD (and >> similar) and users (not cryptographers!) didn't trust it > >Could you back up this claim, insofar that "users" did not trust cgd? I >haven't seen any distrust of cgd -- in fact, I've seen quite a bit of >welcome acceptace of cgd by both users *and* cryptographers. Some of the people I talked to were very unhappy about the same key being used for all sectors on the disk. Even a small weakness in the cipher becomes a big hole because of the amount of data this offers for analysis. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.