From: Herbert Xu Subject: Re: DRBG seeding Date: Thu, 16 Apr 2015 23:26:18 +0800 Message-ID: <20150416152618.GA17690@gondor.apana.org.au> References: <20150416143617.GA17178@gondor.apana.org.au> <1505308.pr7rreheuo@tauon> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Linux Crypto Mailing List To: Stephan Mueller Return-path: Received: from helcar.hengli.com.au ([209.40.204.226]:57335 "EHLO helcar.hengli.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751025AbbDPP0W (ORCPT ); Thu, 16 Apr 2015 11:26:22 -0400 Content-Disposition: inline In-Reply-To: <1505308.pr7rreheuo@tauon> Sender: linux-crypto-owner@vger.kernel.org List-ID: On Thu, Apr 16, 2015 at 05:07:20PM +0200, Stephan Mueller wrote: > > I do not see a specific requirement in SP800-90A about the quality of the > noise source. Well it explicitly says that you cannot use a DRBG. In the worst case get_random_bytes is completely deterministic. > That said, I already developed an in-kernel version of /dev/random. I sent the > patch to LKML some half year ago. If I understood Ted Tso right, there is no > general objection against adding that in-kernel interface. See [1] for the > thread. > > Furthermore, I already started working on updating the DRBG to use that in- > kernel /dev/random interface. > > Shall I pursue that work in earnest now? > > [1] https://lkml.org/lkml/2014/5/11/276 Yes I think we should do this. Thanks, -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt