From owner-freebsd-numerics@FreeBSD.ORG Tue Mar 17 20:43:34 2015 Return-Path: Delivered-To: freebsd-numerics@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 110FFD29 for ; Tue, 17 Mar 2015 20:43:34 +0000 (UTC) Received: from barracuda.supercp.com (barracuda.supercp.com [216.234.124.51]) by mx1.freebsd.org (Postfix) with ESMTP id C7EA7946 for ; Tue, 17 Mar 2015 20:43:33 +0000 (UTC) X-ASG-Debug-ID: 1426625010-0798da1d4f4b85b90001-ljoQne Received: from a2s42.a2hosting.com (a2s42.a2hosting.com [216.119.133.2]) by barracuda.supercp.com with ESMTP id EecBc0prsYpZhzKf for ; Tue, 17 Mar 2015 16:43:30 -0400 (EDT) X-Barracuda-Envelope-From: dennis.hamilton@acm.org X-Barracuda-Apparent-Source-IP: 216.119.133.2 Received: from 75-165-123-152.tukw.qwest.net ([75.165.123.152]:33229 helo=Astraendo2) by a2s42.a2hosting.com with esmtpa (Exim 4.82) (envelope-from ) id 1YXyKm-001qzp-O2 for freebsd-numerics@freebsd.org; Tue, 17 Mar 2015 16:43:29 -0400 Reply-To: From: "Dennis E. Hamilton" To: References: <7CBD7758-9472-4A2E-8065-EC6E68EE8DAB@FreeBSD.org> <20150317060310.GA21975@troutmask.apl.washington.edu> <00a001d060d7$0077f100$0167d300$@acm.org> <55086E2D.9080806@FreeBSD.org> <550874DE.3060700@FreeBSD.org> In-Reply-To: <550874DE.3060700@FreeBSD.org> Subject: RE: Random number generators Date: Tue, 17 Mar 2015 13:43:27 -0700 X-ASG-Orig-Subj: RE: Random number generators Organization: NuovoDoc Message-ID: <014301d060f3$06388070$12a98150$@acm.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Outlook 15.0 Thread-Index: AQH32Py7Ohz5iRyKYdk0RcO8dKEfnwHlGiR6AYuy88UAwAV03wE/WwDZAitxe8MBerg5zJyJfKyQ Content-Language: en-us X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - a2s42.a2hosting.com X-AntiAbuse: Original Domain - freebsd.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - acm.org X-Get-Message-Sender-Via: a2s42.a2hosting.com: authenticated_id: himself+orcmid.com/only user confirmed/virtual account not confirmed X-Barracuda-Connect: a2s42.a2hosting.com[216.119.133.2] X-Barracuda-Start-Time: 1426625010 X-Barracuda-URL: https://216.234.124.51:443/cgi-mod/mark.cgi Received-SPF: softfail (supercp.com: domain of transitioning dennis.hamilton@acm.org does not designate 75.165.123.152 as permitted sender) X-Virus-Scanned: by bsmtpd at supercp.com X-Barracuda-BRTS-Status: 1 X-Barracuda-Spam-Score: 0.00 X-Barracuda-Spam-Status: No, SCORE=0.00 using per-user scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=4.0 KILL_LEVEL=5.0 tests=BSF_SPF_SOFTFAIL X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.16821 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- 0.00 BSF_SPF_SOFTFAIL Custom Rule SPF Softfail X-BeenThere: freebsd-numerics@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: "Discussions of high quality implementation of libm functions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Mar 2015 20:43:34 -0000 You need to look at the explanations on other PCG pages to see what the = criteria are. Also this narrative is helpful: = . At the bottom of that page, PCG is also considered and it is not = recommended as of cryptographic quality because it has not been tested = and challenged enough. In non-cryptographic use it may also be important to understand that = reseeding or mixing that involves capturing "more entropy" may be = delayed because of exhaustion of a periodic source, and one has to wait = for more bits, making attempted cryptographic quality even slower.=20 -----Original Message----- From: owner-freebsd-numerics@freebsd.org = [mailto:owner-freebsd-numerics@freebsd.org] On Behalf Of Pedro Giffuni Sent: Tuesday, March 17, 2015 11:39 To: Mehmet Erol Sanliturk Cc: dennis.hamilton@acm.org; freebsd-numerics@freebsd.org Subject: Re: Random number generators [ ... ] It just came up here. It looks like PCG compares favorably with=20 ChaCha20, but this is PCG's page and the comparison is not very clear ("Secure" vs=20 "Challenging"?) It may be worth considering though. Pedro. _______________________________________________ freebsd-numerics@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-numerics To unsubscribe, send any mail to = "freebsd-numerics-unsubscribe@freebsd.org"