From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753888AbXLEPKq (ORCPT ); Wed, 5 Dec 2007 10:10:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751743AbXLEPKi (ORCPT ); Wed, 5 Dec 2007 10:10:38 -0500 Received: from torres.zugschlus.de ([85.214.68.41]:40364 "EHLO torres.zugschlus.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750898AbXLEPKh (ORCPT ); Wed, 5 Dec 2007 10:10:37 -0500 Date: Wed, 5 Dec 2007 16:10:36 +0100 From: Marc Haber To: linux-kernel@vger.kernel.org Subject: Re: Why does reading from /dev/urandom deplete entropy so much? Message-ID: <20071205151036.GF24685@torres.zugschlus.de> References: <20071204114125.GA17310@torres.zugschlus.de> <20071204161811.GB15974@stusta.de> <20071205122912.GC24685@torres.zugschlus.de> <20071205133320.GI7259@thunk.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20071205133320.GI7259@thunk.org> User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Dec 05, 2007 at 08:33:20AM -0500, Theodore Tso wrote: > BTW, note that it would be a polite thing for GnuTLS when it is > encrpyting data, which represents information which might not be > available to an adversary, and SHA1 hash it (out of paranoia) and feed > it to /dev/random. > > This won't give any "credits" to the random entropy counter, but to > the extent that is information that isn't available to the adversary, > it adds additional uncertainty to the random pool. I have filed this as https://savannah.gnu.org/support/index.php?106113 Thanks for suggesting. Greetings Marc -- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Mannheim, Germany | lose things." Winona Ryder | Fon: *49 621 72739834 Nordisch by Nature | How to make an American Quilt | Fax: *49 3221 2323190