From daemon@ns.ietf.org Fri May 31 15:49:25 2002 Received: from optimus.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id PAA01591 for ; Fri, 31 May 2002 15:49:24 -0400 (EDT) Received: (from daemon@localhost) by optimus.ietf.org (8.9.1a/8.9.1) id PAA00468 for sip-security-archive@odin.ietf.org; Fri, 31 May 2002 15:49:52 -0400 (EDT) Received: from optimus.ietf.org (localhost [127.0.0.1]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id PAA29889; Fri, 31 May 2002 15:40:48 -0400 (EDT) Received: from ietf.org (odin [132.151.1.176]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id PAA29847 for ; Fri, 31 May 2002 15:40:46 -0400 (EDT) Received: from mgw-dax2.ext.nokia.com (mgw-dax2.ext.nokia.com [63.78.179.217]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id PAA00397 for ; Fri, 31 May 2002 15:40:13 -0400 (EDT) From: Tat.Chan@nokia.com Received: from davir02nok.americas.nokia.com (davir02nok.americas.nokia.com [172.18.242.85]) by mgw-dax2.ext.nokia.com (Switch-2.2.1/Switch-2.2.0) with ESMTP id g4VJhrU27053 for ; Fri, 31 May 2002 14:43:53 -0500 (CDT) Received: from daebh001.NOE.Nokia.com (unverified) by davir02nok.americas.nokia.com (Content Technologies SMTPRS 4.2.5) with ESMTP id for ; Fri, 31 May 2002 14:40:35 -0500 Received: from bsebe001.NOE.Nokia.com ([172.19.160.13]) by daebh001.NOE.Nokia.com with Microsoft SMTPSVC(5.0.2195.4905); Fri, 31 May 2002 14:39:13 -0500 X-MimeOLE: Produced By Microsoft Exchange V6.0.5762.3 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Date: Fri, 31 May 2002 15:39:12 -0400 Message-ID: Thread-Topic: S/MIME usage Thread-Index: AcII2sIgDxVyx5wBRVSGf0Hfe9E6tA== To: X-OriginalArrivalTime: 31 May 2002 19:39:13.0658 (UTC) FILETIME=[D7D26DA0:01C208DA] Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by optimus.ietf.org id PAA29849 Subject: [Sip-security] S/MIME usage Sender: sip-security-admin@ietf.org Errors-To: sip-security-admin@ietf.org X-Mailman-Version: 1.0 Precedence: bulk List-Id: Security Issues for the SIP protocol X-BeenThere: sip-security@ietf.org Content-Transfer-Encoding: 8bit Hi, I've been studying S/MIME usage in SIP from the bis 09 draft. I have this question, if a UAC sends an S/MIME message to the UAS, who cannot verify the sender's certificate, what response should the UAS send back to the UAC? Should it be a 403 Forbidden? How can the UAS notify the UAC that the certificate cannot be verified? Thanks! -Tat _______________________________________________ Sip-security mailing list Sip-security@ietf.org https://www1.ietf.org/mailman/listinfo/sip-security