linux-kernel - Re: [PATCH v31 00/12] /dev/random - a new approach with full SP800-90B

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Message-ID: <20200728204044.GD1012@bug>
Date:   Tue, 28 Jul 2020 22:40:44 +0200
From:   Pavel Machek <pavel@....cz>
To:     Stephan M?ller <smueller@...onox.de>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-crypto@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
        linux-api@...r.kernel.org,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        "Alexander E. Patrakov" <patrakov@...il.com>,
        "Ahmed S. Darwish" <darwish.07@...il.com>,
        "Theodore Y. Ts'o" <tytso@....edu>, Willy Tarreau <w@....eu>,
        Matthew Garrett <mjg59@...f.ucam.org>,
        Vito Caputo <vcaputo@...garu.com>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        Jan Kara <jack@...e.cz>, Ray Strode <rstrode@...hat.com>,
        William Jon McCann <mccann@....edu>,
        zhangjs <zachary@...shancloud.com>,
        Andy Lutomirski <luto@...nel.org>,
        Florian Weimer <fweimer@...hat.com>,
        Lennart Poettering <mzxreary@...inter.de>,
        Nicolai Stange <nstange@...e.de>,
        "Peter, Matthias" <matthias.peter@....bund.de>,
        Marcelo Henrique Cerri <marcelo.cerri@...onical.com>,
        Roman Drahtmueller <draht@...altsekun.de>,
        Neil Horman <nhorman@...hat.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Julia Lawall <julia.lawall@...ia.fr>,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: Re: [PATCH v31 00/12] /dev/random - a new approach with full
 SP800-90B

Hi!

> The following patch set provides a different approach to /dev/random which is called 
> Linux Random Number Generator (LRNG) to collect entropy within the Linux kernel. The 
> main improvements compared to the existing /dev/random is to provide sufficient entropy 
> during boot time as well as in virtual environments and when using SSDs. A secondary 
> design goal is to limit the impact of the entropy collection on massive parallel systems 
> and also allow the use accelerated cryptographic primitives. Also, all steps of the 
> entropic data processing are testable.

That sounds good.. maybe too good. Where does LRNG get the entropy? That is the
part that should be carefully documented..

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html