From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: A couple of questions and concerns about Emacs network security Date: Mon, 09 Jul 2018 20:02:44 +0300 Message-ID: <83k1q4gx57.fsf@gnu.org> References: <83o9g2uhju.fsf@gnu.org> <20180705115826.73c1d95e@jabberwock.cb.piermont.com> <878t6lom8g.fsf@mouse.gnus.org> <87pnzxn4kw.fsf@mouse.gnus.org> <87fu0tmxfs.fsf@mouse.gnus.org> <83va9pha36.fsf@gnu.org> <83tvp9h9dv.fsf@gnu.org> <87y3ellggt.fsf@mouse.gnus.org> <83sh4th84d.fsf@gnu.org> <87fu0tle7f.fsf@mouse.gnus.org> NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1531155717 16728 195.159.176.226 (9 Jul 2018 17:01:57 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 9 Jul 2018 17:01:57 +0000 (UTC) Cc: wyuenho@gmail.com, emacs-devel@gnu.org To: Lars Ingebrigtsen Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Jul 09 19:01:53 2018 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1fcZXt-0004FK-69 for ged-emacs-devel@m.gmane.org; Mon, 09 Jul 2018 19:01:53 +0200 Original-Received: from localhost ([::1]:43451 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fcZa0-0003t5-Bo for ged-emacs-devel@m.gmane.org; Mon, 09 Jul 2018 13:04:04 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:35458) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fcZYf-0003IJ-JB for emacs-devel@gnu.org; Mon, 09 Jul 2018 13:02:45 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fcZYb-0004bN-TP for emacs-devel@gnu.org; Mon, 09 Jul 2018 13:02:41 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:42331) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fcZYb-0004bJ-Q1; Mon, 09 Jul 2018 13:02:37 -0400 Original-Received: from [176.228.60.248] (port=3971 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1fcZYb-0003IW-2Z; Mon, 09 Jul 2018 13:02:37 -0400 In-reply-to: <87fu0tle7f.fsf@mouse.gnus.org> (message from Lars Ingebrigtsen on Sun, 08 Jul 2018 21:28:20 +0200) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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" Xref: news.gmane.org gmane.emacs.devel:227158 Archived-At: > From: Lars Ingebrigtsen > Cc: wyuenho@gmail.com, emacs-devel@gnu.org > Date: Sun, 08 Jul 2018 21:28:20 +0200 > > Eli Zaretskii writes: > > >> Users aren't supposed to care about that variable, anyway, since the NSM > >> warns about less than 1024 bits... > > > > Yes, but what if GnuTLS bumps the default to more than that? And even > > if not, I think I might like to know how far below 1024 I'm going to > > be if I allow the connection. > > The NSM will say explicitly how many bits the DH exchange is using. Try > this one with `M-x eww' > > https://dh480.badssl.com/ > > and you should get the warning. The warning says The Diffie-Hellman prime bits (480) used for this connection to dh480.badssl.com:443 is less than what is considered safe (1024) So it doesn't show the 1008 value. What did I miss?