Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754202AbcLOGJW (ORCPT ); Thu, 15 Dec 2016 01:09:22 -0500 Received: from helcar.hengli.com.au ([209.40.204.226]:57035 "EHLO helcar.apana.org.au" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752523AbcLOGJV (ORCPT ); Thu, 15 Dec 2016 01:09:21 -0500 Date: Thu, 15 Dec 2016 14:09:04 +0800 From: Herbert Xu To: PrasannaKumar Muralidharan Cc: Corentin Labbe , davem@davemloft.net, maxime.ripard@free-electrons.com, Chen-Yu Tsai , linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v2] crypto: sun4i-ss: support the Security System PRNG Message-ID: <20161215060904.GB13152@gondor.apana.org.au> References: <1480934922-20732-1-git-send-email-clabbe.montjoie@gmail.com> <20161205123705.GA10732@gondor.apana.org.au> <20161205125738.GA13525@Red> <20161207120900.GC20680@gondor.apana.org.au> <20161207125127.GB28218@Red> <20161208090618.GB22932@gondor.apana.org.au> <20161213141059.GB10647@Red> <20161214050551.GD9592@gondor.apana.org.au> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 521 Lines: 13 On Thu, Dec 15, 2016 at 12:47:16AM +0530, PrasannaKumar Muralidharan wrote: > Should there be a mandate that driver will be accepted only when it > passes 'rngtest'. This will make sure that prng drivers won't get > added in future. You cannot use software to distinguish between a PRNG and an HRNG. We can only rely on the veracity of the documentation. Cheers, -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt