From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/84377 Path: news.gmane.org!not-for-mail From: Uwe Brauer Newsgroups: gmane.emacs.gnus.general Subject: Re: Email encryption with S/MIME or OpenPGP? Date: Wed, 19 Mar 2014 18:33:43 +0100 Message-ID: <87ob12gkjs.fsf@gilgamesch.quim.ucm.es> References: NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=sha1; protocol="application/pkcs7-signature" X-Trace: ger.gmane.org 1395250477 20805 80.91.229.3 (19 Mar 2014 17:34:37 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 19 Mar 2014 17:34:37 +0000 (UTC) To: ding@gnus.org Original-X-From: ding-owner+M32623@lists.math.uh.edu Wed Mar 19 18:34:45 2014 Return-path: Envelope-to: ding-account@gmane.org Original-Received: from util0.math.uh.edu ([129.7.128.18]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1WQKO4-0004oD-KV for ding-account@gmane.org; Wed, 19 Mar 2014 18:34:45 +0100 Original-Received: from localhost ([127.0.0.1] helo=lists.math.uh.edu) by util0.math.uh.edu with smtp (Exim 4.63) (envelope-from ) id 1WQKNX-00027s-ST; Wed, 19 Mar 2014 12:34:11 -0500 Original-Received: from mx2.math.uh.edu ([129.7.128.33]) by util0.math.uh.edu with esmtps (TLSv1:AES256-SHA:256) (Exim 4.63) (envelope-from ) id 1WQKNV-00027g-UH for ding@lists.math.uh.edu; Wed, 19 Mar 2014 12:34:09 -0500 Original-Received: from quimby.gnus.org ([80.91.231.51]) by mx2.math.uh.edu with esmtps (TLSv1:AES128-SHA:128) (Exim 4.76) (envelope-from ) id 1WQKNU-0000jK-Eg for ding@lists.math.uh.edu; Wed, 19 Mar 2014 12:34:09 -0500 Original-Received: from plane.gmane.org ([80.91.229.3]) by quimby.gnus.org with esmtp (Exim 4.80) (envelope-from ) id 1WQKNS-0003zd-HU for ding@gnus.org; Wed, 19 Mar 2014 18:34:06 +0100 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1WQKNQ-0003nf-I7 for ding@gnus.org; Wed, 19 Mar 2014 18:34:04 +0100 Original-Received: from gilgamesch.quim.ucm.es ([147.96.12.99]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 19 Mar 2014 18:34:04 +0100 Original-Received: from oub by gilgamesch.quim.ucm.es with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 19 Mar 2014 18:34:04 +0100 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: ding@gnus.org Original-Lines: 167 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: gilgamesch.quim.ucm.es Mail-Copies-To: never X-Hashcash: 1:20:140319:gmane.emacs.gnus.general::in0EuVZTF9dPDeGZ:00000000000000000000000000000000000003Ur6 User-Agent: Gnus/5.13001 (Ma Gnus v0.10) XEmacs/21.5-b33 (linux) Cancel-Lock: sha1:gbCELWiVhjtzS4lERKjkDwb11pE= X-Spam-Score: -1.9 (-) List-ID: Precedence: bulk Xref: news.gmane.org gmane.emacs.gnus.general:84377 Archived-At: --=-=-= Content-Type: text/plain Content-Transfer-Encoding: quoted-printable >> "Rainer" =3D=3D Rainer M Krug writes: > Hi > At the moment I am using OpenPGP to sign and encrypt my emails, but > this does not work easily on my iPhone (please tell me otherwise if it > does?). No it is not, unfortunately. There is no native support and the 3rd party pkgs are not terrible easy to use, since they are not integrated with the email reader. One of them is even not gpg conform and it was impossible to import an old gpg key of mine. This was one of the reasons for me to switch to smime. > But the iPhone implements S/MIME encryption. Now what are the > advantages of using each as a standard signing / encryption? Which > one is better / safer? I have OpenPGP working via gnus on a Mac and > am happy with it. Both use a-symmetric encryption and are both safe, what is radially different is the distribution of public keys. Pgp/gpg has a key model in which you generate your key pair and distribute your public key or uplaod it to a server. The problem is not safety but authency so in gpg you hope that your key on the server gets signed but a sufficient amout of trustworthy people. Smime has a hirachical model. There are a couple of organisations with posses a root certificate in which signed public keys (called certificates). You typically apply for such a certificate (a process in which the encryption module of your bowswer generate your private key), the authority then allows you to download your certificate signed by their root certificate, confirming usually only the authenticity of your email address. > So - what are others using and why? Should I use S/MIME instead? Well it is much easier to use and also easier to convince others to use it as well, because - It is integrated in your email reader usually.=20 - You do not have to generate a key pair for your self. - And you do not need to exchange the public keys, they are automatically included in your signature. - it is compatible with the iPhone. cheers Uwe Brauer=20 --=-=-= Content-Type: application/pkcs7-signature; name=smime.p7s Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename=smime.p7s MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIITGzCC BDYwggMeoAMCAQICAQEwDQYJKoZIhvcNAQEFBQAwbzELMAkGA1UEBhMCU0UxFDASBgNVBAoT C0FkZFRydXN0IEFCMSYwJAYDVQQLEx1BZGRUcnVzdCBFeHRlcm5hbCBUVFAgTmV0d29yazEi MCAGA1UEAxMZQWRkVHJ1c3QgRXh0ZXJuYWwgQ0EgUm9vdDAeFw0wMDA1MzAxMDQ4MzhaFw0y MDA1MzAxMDQ4MzhaMG8xCzAJBgNVBAYTAlNFMRQwEgYDVQQKEwtBZGRUcnVzdCBBQjEmMCQG A1UECxMdQWRkVHJ1c3QgRXh0ZXJuYWwgVFRQIE5ldHdvcmsxIjAgBgNVBAMTGUFkZFRydXN0 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