linux-kernel - Re: drivers/char/random.c needs a (new) maintainer

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Message-ID: <e61c46f2ded9d8676c77beb40c78200df0ada928.camel@chronox.de>
Date:   Wed, 23 Dec 2020 16:22:22 +0100
From:   Stephan Mueller <smueller@...onox.de>
To:     "Jason A. Donenfeld" <Jason@...c4.com>,
        Petr Tesarik <ptesarik@...e.cz>
Cc:     Torsten Duwe <duwe@....de>,
        Marcelo Henrique Cerri <marcelo.cerri@...onical.com>,
        "Theodore Y. Ts'o" <tytso@....edu>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Willy Tarreau <w@....eu>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        Nicolai Stange <nstange@...e.de>,
        LKML <linux-kernel@...r.kernel.org>,
        Arnd Bergmann <arnd@...db.de>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        "Alexander E. Patrakov" <patrakov@...il.com>,
        "Ahmed S. Darwish" <darwish.07@...il.com>,
        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>,
        Peter Matthias <matthias.peter@....bund.de>,
        Neil Horman <nhorman@...hat.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Julia Lawall <julia.lawall@...ia.fr>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        And y Lavr <andy.lavr@...il.com>,
        Eric Biggers <ebiggers@...nel.org>,
        Ard Biesheuvel <ardb@...nel.org>, simo@...hat.com
Subject: Re: drivers/char/random.c needs a (new) maintainer

Am Mittwoch, dem 23.12.2020 um 15:32 +0100 schrieb Jason A. Donenfeld:
> 
> I would, however, be interested in a keccak-based construction. But
> just using the keccak permutation does not automatically make it
> "SHA-3", so we're back at the same issue again. FIPS is simply not
> interesting for our requirements.

Your requirements? Interesting approach.

Using non-assessed cryptography? Sounds dangerous to me even though it may be
based on some well-known construction.

I thought Linux in general and crypto in particular is about allowing user (or
the vendor) to decide about the used algorithm. So, let us have a mechanism
that gives them this freedom.

Thus the proposed idea sounds to me like a dangerous proposition upon which
almost all cryptography shall rest. This will surely invite even more
fragmentation.

Ciao
Stephan

PS: This entire discussion is NOT about the crypto side of the random numbers,
but about how get the entropy for the random numbers.