From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Ted Zlatanov Newsgroups: gmane.emacs.devel Subject: Re: New function: secure-random-bytes Date: Mon, 27 Jun 2011 11:10:36 -0500 Organization: =?utf-8?B?0KLQtdC+0LTQvtGAINCX0LvQsNGC0LDQvdC+0LI=?= @ Cienfuegos Message-ID: <87y60nb6gz.fsf@lifelogs.com> References: <87liwrh7r2.fsf@lifelogs.com> <4E04CA7B.2020101@cs.ucla.edu> Reply-To: emacs-devel@gnu.org NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: dough.gmane.org 1309195789 3332 80.91.229.12 (27 Jun 2011 17:29:49 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Mon, 27 Jun 2011 17:29:49 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Jun 27 19:29:38 2011 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1QbFcw-000530-7a for ged-emacs-devel@m.gmane.org; Mon, 27 Jun 2011 19:29:38 +0200 Original-Received: from localhost ([::1]:49331 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QbFcv-00053C-8j for ged-emacs-devel@m.gmane.org; Mon, 27 Jun 2011 13:29:37 -0400 Original-Received: from eggs.gnu.org ([140.186.70.92]:48056) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QbESs-0002Dm-OF for emacs-devel@gnu.org; Mon, 27 Jun 2011 12:15:12 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QbESo-0005ej-FK for emacs-devel@gnu.org; Mon, 27 Jun 2011 12:15:10 -0400 Original-Received: from lo.gmane.org ([80.91.229.12]:38179) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QbESo-0005dL-4K for emacs-devel@gnu.org; Mon, 27 Jun 2011 12:15:06 -0400 Original-Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1QbESm-0000eF-RK for emacs-devel@gnu.org; Mon, 27 Jun 2011 18:15:04 +0200 Original-Received: from 38.98.147.133 ([38.98.147.133]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 27 Jun 2011 18:15:04 +0200 Original-Received: from tzz by 38.98.147.133 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 27 Jun 2011 18:15:04 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: emacs-devel@gnu.org Original-Lines: 29 Original-X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: 38.98.147.133 X-Face: bd.DQ~'29fIs`T_%O%C\g%6jW)yi[zuz6; d4V0`@y-~$#3P_Ng{@m+e4o<4P'#(_GJQ%TT= D}[Ep*b!\e,fBZ'j_+#"Ps?s2!4H2-Y"sx" Mail-Copies-To: never User-Agent: Gnus/5.110018 (No Gnus v0.18) Emacs/24.0.50 (gnu/linux) Cancel-Lock: sha1:Ln0fUeta+zuWLleNYV43YtJ8PLU= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 80.91.229.12 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:141079 Archived-At: On Fri, 24 Jun 2011 10:33:47 -0700 Paul Eggert wrote: PE> On 06/24/11 02:57, Ted Zlatanov wrote: >> Do you think you could you provide three functions, >> `secure-random-bytes-{urandom,gnutls,openssl}' instead of three versions >> with the same name? PE> I dunno, I kind of like the simpler interface. PE> It's better to have the notion of a random-source, PE> independent of the notion of generating random bytes from it. PE> Whether that source should be represenated by an atom or PE> by something else is a different matter. At least for GnuTLS it would make sense to put the function that actually calls GnuTLS at the C level in gnutls.c. Ditto for OpenSSL. Beyond that, it can be abstracted any way you like :) My way was just a suggestion. PE> I suggest using ISAAC-64, which is what coreutils' random-bytes PE> generators use by default. (Coreutils originally defaulted to PE> /dev/urandom, but users complained because that was too slow.) PE> On my list of things to do is to gnulib-ize the coreutils PE> ISAAC-64 and random-bytes generators, and I can do that if PE> there's interest. Works for me. I think you're right about the /dev/urandom performance. Ted