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: Should Emacs provide a uuid function? Date: Mon, 09 May 2011 10:27:53 -0500 Organization: =?utf-8?B?0KLQtdC+0LTQvtGAINCX0LvQsNGC0LDQvdC+0LI=?= @ Cienfuegos Message-ID: <87d3jrgah2.fsf@lifelogs.com> References: <87ipu3v0ru.fsf@stupidchicken.com> <871v0raqub.fsf@uwakimon.sk.tsukuba.ac.jp> <42A7030B-DE0C-4CCA-A768-B82BE70C42F9@raeburn.org> <87liyynm6a.fsf@stupidchicken.com> <83aaewjq1x.fsf@gnu.org> <87sjsnvrkr.fsf@stupidchicken.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: dough.gmane.org 1304954897 2403 80.91.229.12 (9 May 2011 15:28:17 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Mon, 9 May 2011 15:28:17 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon May 09 17:28:12 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 1QJSNY-0005eZ-1J for ged-emacs-devel@m.gmane.org; Mon, 09 May 2011 17:28:12 +0200 Original-Received: from localhost ([::1]:50105 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QJSNX-0006WP-Bj for ged-emacs-devel@m.gmane.org; Mon, 09 May 2011 11:28:11 -0400 Original-Received: from eggs.gnu.org ([140.186.70.92]:51939) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QJSNT-0006SQ-Sx for emacs-devel@gnu.org; Mon, 09 May 2011 11:28:08 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QJSNS-0007Wr-PQ for emacs-devel@gnu.org; Mon, 09 May 2011 11:28:07 -0400 Original-Received: from lo.gmane.org ([80.91.229.12]:51136) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QJSNS-0007Wm-Fu for emacs-devel@gnu.org; Mon, 09 May 2011 11:28:06 -0400 Original-Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1QJSNQ-0005Zy-QD for emacs-devel@gnu.org; Mon, 09 May 2011 17:28:04 +0200 Original-Received: from 38.98.147.130 ([38.98.147.130]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 09 May 2011 17:28:04 +0200 Original-Received: from tzz by 38.98.147.130 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 09 May 2011 17:28:04 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 32 Original-X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: 38.98.147.130 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" User-Agent: Gnus/5.110018 (No Gnus v0.18) Emacs/24.0.50 (gnu/linux) Cancel-Lock: sha1:PJmmbgpx1+9a1MQgh3Xstw8hzHM= 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:139262 Archived-At: On Mon, 09 May 2011 11:09:24 -0400 Chong Yidong wrote: CY> I'm not sure we should introduce a separate function, though. It makes CY> more sense to improve the existing `random' primitive, making it return CY> a random number (via /dev/random or /dev/urandom or GnuTLS) rather than CY> a pseudo-random number when possible. On Mon, 09 May 2011 14:35:40 +0300 Eli Zaretskii wrote: >> From: Ted Zlatanov >> GnuTLS has facilities for this, using /dev/*random and the Yarrow >> algorithm from libnettle. Look at lib/nettle/rnd.c >> http://git.savannah.gnu.org/gitweb/?p=gnutls.git;a=tree;f=lib/nettle;hb=HEAD >> for the `do_trivia_source' and `do_device_source' functions. EZ> Yes, I meant to use on Windows the 2 APIs that rnd.c uses. >> Since GnuTLS is enabled by default in Emacs 24 maybe we can rely on that >> functionality instead of writing it anew? EZ> It is enabled, but it isn't guaranteed to be present. It isn't a good EZ> idea, IMO, to have features unrelated to gnutls depend on it being EZ> available. Random number generation is implemented very well in GnuTLS, though (cryptographers care about randomness more than almost anyone else). Maybe we should make GnuTLS a source of random numbers together with a slower ELisp version when GnuTLS is not available? That would work for everyone, I think. Ted