From owner-freebsd-hackers@FreeBSD.ORG Thu Mar 3 17:55:24 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 4440016A4CE for ; Thu, 3 Mar 2005 17:55:24 +0000 (GMT) Received: from critter.freebsd.dk (f170.freebsd.dk [212.242.86.170]) by mx1.FreeBSD.org (Postfix) with ESMTP id 95D9443D46 for ; Thu, 3 Mar 2005 17:55:23 +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 j23HtG3Q009724; Thu, 3 Mar 2005 18:55:17 +0100 (CET) (envelope-from phk@critter.freebsd.dk) To: Richard Coleman From: "Poul-Henning Kamp" In-Reply-To: Your message of "Thu, 03 Mar 2005 12:31:56 EST." <42274A0C.5010403@criticalmagic.com> Date: Thu, 03 Mar 2005 18:55:16 +0100 Message-ID: <9723.1109872516@critter.freebsd.dk> Sender: phk@critter.freebsd.dk cc: tech-security@NetBSD.org cc: elric@imrryr.org cc: hackers@freebsd.org cc: tls@rek.tjls.com cc: crypto@metzdowd.com 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 17:55:24 -0000 In message <42274A0C.5010403@criticalmagic.com>, Richard Coleman writes: >For instance, the NIST specification for AES and CCM mode (NIST Special >Publication 800-38C) specifically states that you must limit the number >of invocations of the block cipher (specifically AES) to 2^61. Now, I >realize that is an upper bound. But even after removing several orders >of magnitude, that leaves a huge amount of material you can encrypt with >a single key. > >Just throwing out a data point. This would be much more interesting if you qouted the number they will say ten and twenty years from now. -- 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.