From owner-freebsd-security@FreeBSD.ORG  Wed Sep 19 17:48:11 2012
Return-Path: <owner-freebsd-security@FreeBSD.ORG>
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 40E6D106568A
	for <freebsd-security@freebsd.org>;
	Wed, 19 Sep 2012 17:48:11 +0000 (UTC)
	(envelope-from rwmaillists@googlemail.com)
Received: from mail-ee0-f54.google.com (mail-ee0-f54.google.com [74.125.83.54])
	by mx1.freebsd.org (Postfix) with ESMTP id C3D858FC14
	for <freebsd-security@freebsd.org>;
	Wed, 19 Sep 2012 17:48:10 +0000 (UTC)
Received: by eeke52 with SMTP id e52so601778eek.13
	for <freebsd-security@freebsd.org>;
	Wed, 19 Sep 2012 10:48:04 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
	d=googlemail.com; s=20120113;
	h=date:from:to:subject:message-id:in-reply-to:references:x-mailer
	:mime-version:content-type:content-transfer-encoding;
	bh=kuyaYNCtYmExgSf5pv1ysb7cLfLAWgdK8WeYLQnSz54=;
	b=bxV8C/SnvKa1MMffZQbAwJ6ZnedN2lZ21bBWFW37c/Ue55DQvAKxXUq8FNMsGK63hn
	8lY/Md813oQlZDnjUtvBwg8Ty2L/BnFy/XeYZdTpu6VevbhNCXR23WEt3YJUwCWPJy2k
	QkzBSKkAnARIGBBvD/I9HgPvxI7O0eUCpBd9cOCYReBLPb76H1zZdm3ePcxErEAkdMD+
	KOZAfePBASQKHi0qqJRV4SojoIuOZ+6Qf+KDo9+ECdvlkB4OihZg1TqA5IEx/+1GM4UN
	+1uzIPi2ewk1xhsNkv9Gp/tsNmwR0q8M+0ZsOBibgdewLkQ2G0cwXcmaI4i+xQqVhvrf
	PpUg==
Received: by 10.14.182.134 with SMTP id o6mr4472214eem.26.1348076883922;
	Wed, 19 Sep 2012 10:48:03 -0700 (PDT)
Received: from gumby.homeunix.com (87-194-105-247.bethere.co.uk.
	[87.194.105.247])
	by mx.google.com with ESMTPS id e7sm9084649eep.2.2012.09.19.10.48.00
	(version=SSLv3 cipher=OTHER); Wed, 19 Sep 2012 10:48:02 -0700 (PDT)
Date: Wed, 19 Sep 2012 18:47:58 +0100
From: RW <rwmaillists@googlemail.com>
To: freebsd-security@freebsd.org
Message-ID: <20120919184758.28589516@gumby.homeunix.com>
In-Reply-To: <867grqm3pt.fsf@ds4.des.no>
References: <20120918211422.GA1400@garage.freebsd.pl>
	<867grqm3pt.fsf@ds4.des.no>
X-Mailer: Claws Mail 3.8.1 (GTK+ 2.24.6; amd64-portbld-freebsd8.3)
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
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 \[members-only posting\]"
	<freebsd-security.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-security>, 
	<mailto:freebsd-security-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-security>
List-Post: <mailto:freebsd-security@freebsd.org>
List-Help: <mailto:freebsd-security-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-security>, 
	<mailto:freebsd-security-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 19 Sep 2012 17:48:11 -0000

On Wed, 19 Sep 2012 17:28:46 +0200
Dag-Erling Sm=F8rgrav wrote:

=20
> 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 it just resets the counters, after
initrandom forces a slow reseed all of the accumulated entropy  (up
to 256 bits) is in the generator.