From owner-freebsd-security@FreeBSD.ORG Thu Sep 20 09:05:35 2012 Return-Path: Delivered-To: freebsd-security@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 16897106567A for ; Thu, 20 Sep 2012 09:05:35 +0000 (UTC) (envelope-from des@des.no) Received: from smtp.des.no (smtp.des.no [194.63.250.102]) by mx1.freebsd.org (Postfix) with ESMTP id CC3108FC12 for ; Thu, 20 Sep 2012 09:05:33 +0000 (UTC) Received: from ds4.des.no (smtp.des.no [194.63.250.102]) by smtp.des.no (Postfix) with ESMTP id 1311F6214; Thu, 20 Sep 2012 11:05:33 +0200 (CEST) Received: by ds4.des.no (Postfix, from userid 1001) id B1E1086EB; Thu, 20 Sep 2012 11:05:32 +0200 (CEST) From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= To: RW References: <20120918211422.GA1400@garage.freebsd.pl> <867grqm3pt.fsf@ds4.des.no> <20120919184758.28589516@gumby.homeunix.com> Date: Thu, 20 Sep 2012 11:05:32 +0200 In-Reply-To: <20120919184758.28589516@gumby.homeunix.com> (RW's message of "Wed, 19 Sep 2012 18:47:58 +0100") Message-ID: <86sjadt677.fsf@ds4.des.no> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.4 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Cc: freebsd-security@freebsd.org Subject: Re: Collecting entropy from device_attach() times. X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Security issues \[members-only posting\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 20 Sep 2012 09:05:35 -0000 RW writes: > Dag-Erling Sm=C3=B8rgrav writes: > > I would also suggest modifying yarrow to block reseeding as long as > > possible, ideally right up until the first time something asks for a > > random number, since reseeding throws away all accumulated entropy. > reseeding doesn't throw away entropy Yes, it does. DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no