From owner-cvs-src@FreeBSD.ORG Sun May 15 06:06:58 2005 Return-Path: Delivered-To: cvs-src@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CFB9716A4CE; Sun, 15 May 2005 06:06:58 +0000 (GMT) Received: from pd4mo2so.prod.shaw.ca (shawidc-mo1.cg.shawcable.net [24.71.223.10]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8500F43D9E; Sun, 15 May 2005 06:06:58 +0000 (GMT) (envelope-from cperciva@freebsd.org) Received: from pd4mr7so.prod.shaw.ca (pd4mr7so-qfe3.prod.shaw.ca [10.0.141.84])2004)) with ESMTP id <0IGI00HECOX3GPPP@l-daemon>; Sun, 15 May 2005 00:05:27 -0600 (MDT) Received: from pn2ml4so.prod.shaw.ca ([10.0.121.148]) by pd4mr7so.prod.shaw.ca (Sun ONE Messaging Server 6.0 HotFix 1.01 (built Mar 15 2004)) with ESMTP id <0IGI00B03OX33QB0@pd4mr7so.prod.shaw.ca>; Sun, 15 May 2005 00:05:27 -0600 (MDT) Received: from [192.168.0.60] (S0106006067227a4a.vc.shawcable.net [24.87.209.6]) by l-daemon (iPlanet Messaging Server 5.2 HotFix 1.18 (built Jul 28 2003)) with ESMTP id <0IGI00B1UOX27Q@l-daemon>; Sun, 15 May 2005 00:05:26 -0600 (MDT) Date: Sun, 15 May 2005 02:05:25 -0400 From: Colin Percival In-reply-to: <42864809.7020700@root.org> To: Nate Lawson Message-id: <4286E6A5.4030902@freebsd.org> MIME-version: 1.0 Content-type: text/plain; charset=KOI8-R Content-transfer-encoding: 7bit X-Accept-Language: en-us, en X-Enigmail-Version: 0.91.0.0 References: <200505130001.j4D01KcE015393@repoman.freebsd.org> <20050514093203.GA81770@FreeBSD.org> <4285C73B.3040409@freebsd.org> <42864809.7020700@root.org> User-Agent: Mozilla Thunderbird 1.0.2 (X11/20050406) cc: Jacques Vidrine cc: cvs-src@FreeBSD.org cc: src-committers@FreeBSD.org cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/amd64/amd64 mp_machdep.csrc/sys/amd64/include cpufunc.h src/sys/i386/i386 mp_machdep.c src/sys/i386/include cpufunc.h X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 15 May 2005 06:06:59 -0000 Nate Lawson wrote: > That is at best, hyperbole. Have you been talking to Intel lately? > Crypto implementations which properly > implement blinding or operate in constant time are not vulnerable. Crypto implementations which implement blinding are vulnerable. Crypto implementations which operate in constant time would not be vulnerable, but not for the reasons you think, and I don't think any such implementations currently exist. > Disabling HTT only decreases the quality of measurement, requiring more > measurements. No. Read my paper. I'm not measuring the total time needed for an RSA operation; I'm watching it as it occurs. Colin Percival