From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751774AbaELDp0 (ORCPT ); Sun, 11 May 2014 23:45:26 -0400 Received: from mga01.intel.com ([192.55.52.88]:47480 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751609AbaELDpZ (ORCPT ); Sun, 11 May 2014 23:45:25 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,1032,1389772800"; d="scan'208";a="537442430" Message-ID: <537043D4.8070301@linux.intel.com> Date: Sun, 11 May 2014 20:45:24 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: Stephan Mueller CC: "Theodore Ts'o" , LKML , linux-crypto@vger.kernel.org Subject: Re: arch_random_refill References: <21542339.0lFnPSyGRS@myon.chronox.de> <53703E74.9020700@linux.intel.com> <3260147.sUis3H5ONm@myon.chronox.de> In-Reply-To: <3260147.sUis3H5ONm@myon.chronox.de> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/11/2014 08:36 PM, Stephan Mueller wrote: > > But in our current predicament, not everybody trusts a few potentially easily > manipulated gates that have no other purpose than produce white noise which > are developed by the biggest chip vendor in the US. Gates which have other > purposes may not be that easily manipulated. > Incidentally, I disagree with the "easily manipulated" bit. Yes, I have seen the paper which says that you can do it in such a way that it doesn't show up on *visual* examination. However, put an electrical probe on it and it shows up immediately. -hpa