From owner-freebsd-security@FreeBSD.ORG Mon Sep 24 22:10:28 2012 Return-Path: Delivered-To: freebsd-security@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A13E81065670; Mon, 24 Sep 2012 22:10:28 +0000 (UTC) (envelope-from mariusz.gromada@gmail.com) Received: from mail-we0-f182.google.com (mail-we0-f182.google.com [74.125.82.182]) by mx1.freebsd.org (Postfix) with ESMTP id 9D9378FC0C; Mon, 24 Sep 2012 22:10:27 +0000 (UTC) Received: by weyx43 with SMTP id x43so882977wey.13 for ; Mon, 24 Sep 2012 15:10:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; bh=+8RDxzoKNN5k+EgMHMcNSDu2sDmKqpg/hEwXPmlqQ5o=; b=yfnTaukyIqhVmg2vo2v9XdhPnLlFBoIchew/8sLWvble4U+Ka9GxVYUley34gQQHGU QkfsraXXs71x6Ep+taiN0SUA22UJ19E056YAfKCa0FZtEVLiKOM3xDIGc7WWcQS274fS KAdU7pXytUvG1xPD7WE3XiKChLSbZxVkm8vaKyGqsMde9u0xlHw9/B+p/biwl5m1aDb+ JPASbETK0X0pI5Fv5HLjoqV9xkMP8+vK4N2hq4EyxwkPv9hKnBXnqK8QfRGJVO6bsOIo iSsd5w5WE7vMGKPGvPj3bLsLmDhjOTL8D4lEn9TqcezOLGZwBO4+DJ0wXrvpe0BxkGy7 0OYg== Received: by 10.180.100.37 with SMTP id ev5mr17090715wib.5.1348524626443; Mon, 24 Sep 2012 15:10:26 -0700 (PDT) Received: from [192.168.1.100] (89-76-147-86.dynamic.chello.pl. [89.76.147.86]) by mx.google.com with ESMTPS id l6sm16834218wiz.4.2012.09.24.15.10.24 (version=SSLv3 cipher=OTHER); Mon, 24 Sep 2012 15:10:25 -0700 (PDT) Message-ID: <5060DA45.30808@gmail.com> Date: Tue, 25 Sep 2012 00:10:13 +0200 From: Mariusz Gromada User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20120907 Thunderbird/15.0.1 MIME-Version: 1.0 To: Pawel Jakub Dawidek References: <20120918211422.GA1400@garage.freebsd.pl> <20120919231051.4bc5335b@gumby.homeunix.com> <20120920102104.GA1397@garage.freebsd.pl> <201209200758.51924.jhb@freebsd.org> <20120922080323.GA1454@garage.freebsd.pl> <20120922195325.GH1454@garage.freebsd.pl> <505E59DC.7090505@gmail.com> <20120923151706.GN1454@garage.freebsd.pl> <5060D723.6020305@gmail.com> In-Reply-To: <5060D723.6020305@gmail.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Mailman-Approved-At: Mon, 24 Sep 2012 22:35:37 +0000 Cc: Ben Laurie , freebsd-security@freebsd.org, RW , Jonathan Anderson , John Baldwin 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: Mon, 24 Sep 2012 22:10:28 -0000 W dniu 2012-09-24 23:56, Mariusz Gromada pisze: > Ok, finally I have some formal results. To be completely honest I need > to point out that, in fact, we have a discrete data (for example > integers 0, 1, ..., 63, but not continues numbers spread across 0 and > 63). That is way I am going to use two sample Kolmogorov-Smirnov test. Another clarification is needed. KS test in general (and in theory) should be used for continuous distributions. But in our case we can easily say that we observe our distribution in integers only (rounding), and the whole rest is easily estimated. Regards, Mariusz