From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephan Mueller Subject: Re: Could this be applied to random(4)? Date: Sun, 29 May 2016 21:20:11 +0200 Message-ID: <3128607.kWjc3BaTVM@positron.chronox.de> References: <1536831.omfD4HBPSy@tauon.atsec.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Cc: linux-crypto@vger.kernel.org, Theodore Ts'o , John Denker To: Sandy Harris Return-path: Received: from mail.eperm.de ([89.247.134.16]:35070 "EHLO mail.eperm.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753003AbcE2TUN (ORCPT ); Sun, 29 May 2016 15:20:13 -0400 In-Reply-To: Sender: linux-crypto-owner@vger.kernel.org List-ID: Am Freitag, 27. Mai 2016, 16:09:53 schrieb Sandy Harris: Hi Sandy, > On Fri, May 27, 2016 at 2:30 PM, Stephan Mueller wrote: > > This document describes extractors. Those extractors are intended to > > combine *independent* sources with weak entropy. > > > > None of our sources we have in add_*_randomness are independent. > > No, but it would be easy to get two independent sources, interrupts > and some sort of timer jitter thing as in my maxwell, your jitter > driver, havege, ... I think I would concur with you here. From my LRNG code: static int lrng_pdrbg_seed_internal(u8 *outbuf, u32 outbuflen, bool fullentropy, bool drain) { ... /* * Concatenate the output of the noise sources. This would be the * spot to add an entropy extractor logic if desired. ... > -- > To unsubscribe from this list: send the line "unsubscribe linux-crypto" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html Ciao Stephan