From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 1 Nov 2002 10:28:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 1 Nov 2002 10:28:42 -0500 Received: from outpost.ds9a.nl ([213.244.168.210]:21981 "EHLO outpost.ds9a.nl") by vger.kernel.org with ESMTP id ; Fri, 1 Nov 2002 10:28:41 -0500 Date: Fri, 1 Nov 2002 16:35:09 +0100 From: bert hubert To: Linus Torvalds Cc: linux-kernel@vger.kernel.org Subject: Re: What's left over. Message-ID: <20021101153508.GA10277@outpost.ds9a.nl> Mail-Followup-To: bert hubert , Linus Torvalds , linux-kernel@vger.kernel.org References: <20021031181252.GB24027@tapu.f00f.org> <20021031194351.GA24676@tapu.f00f.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.3.28i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Nov 01, 2002 at 03:25:01PM +0000, Linus Torvalds wrote: > (copy-in and copy-out, and that's so theoretical that it's not even > funny - I'd be surprised if RL throughput copying back and forth over a > PCI bus is more than 25-30MB/s), I suspect that you can do most crypto > faster on the CPU directly these days. I'd be amazed of current CPUs would be able to do asymmetric encryption at anywhere within an order of magnitude of those rates. Symmetric encryption is something else. This is the reason many encryption products (ie, pgp) only use asymmetric encryption for encrypting a symmetric session key, and not encrypting the entire message. Regards, bert hubert -- http://www.PowerDNS.com Versatile DNS Software & Services http://lartc.org Linux Advanced Routing & Traffic Control HOWTO