PASSporT SHAKEN Extension (SHAKEN)
draft-ietf-stir-passport-shaken-08

Document Type Active Internet-Draft (stir WG)
Last updated 2019-03-28 (latest revision 2019-03-10)
Replaces draft-wendt-stir-passport-shaken
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Stream WG state Submitted to IESG for Publication (wg milestone: Sep 2018 - Submit PASSPorT SHAK... )
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STIR                                                            C. Wendt
Internet-Draft                                                   Comcast
Intended status: Standards Track                               M. Barnes
Expires: September 11, 2019                                    iconectiv
                                                          March 10, 2019

                   PASSporT SHAKEN Extension (SHAKEN)
                   draft-ietf-stir-passport-shaken-08

Abstract

   This document extends PASSporT, which is a token object that conveys
   cryptographically-signed information about the participants involved
   in communications.  The extension is defined, corresponding to the
   SHAKEN specification, to provide both a specific set of levels-of-
   confidence in the correctness of the originating identity for a SIP
   based Communication Service Provider (CSP) telephone network
   originated call as well as an identifier that allows the CSP to
   uniquely identify the origin of the call within its network.

Status of This Memo

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   This Internet-Draft will expire on September 11, 2019.

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect

Wendt & Barnes         Expires September 11, 2019               [Page 1]
Internet-Draft                   shaken                       March 2019

   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Overview of 'shaken' PASSporT extension . . . . . . . . . . .   3
   4.  PASSporT 'attest' Claim . . . . . . . . . . . . . . . . . . .   4
   5.  PASSporT 'origid' Claim . . . . . . . . . . . . . . . . . . .   4
   6.  Example "shaken" PASSporT . . . . . . . . . . . . . . . . . .   4
   7.  Using 'shaken' in SIP . . . . . . . . . . . . . . . . . . . .   4
   8.  Order of Claim Keys . . . . . . . . . . . . . . . . . . . . .   4
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   10. Privacy Considerations  . . . . . . . . . . . . . . . . . . .   5
   11. IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
     11.1.  JSON Web Token claims  . . . . . . . . . . . . . . . . .   6
     11.2.  PASSporT Types . . . . . . . . . . . . . . . . . . . . .   6
   12. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   6
   13. References  . . . . . . . . . . . . . . . . . . . . . . . . .   7
     13.1.  Normative References . . . . . . . . . . . . . . . . . .   7
     13.2.  Informative References . . . . . . . . . . . . . . . . .   7
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   8

1.  Introduction

   The Signature-based Handling of Asserted information using toKENs
   (SHAKEN) [ATIS-1000074] specification defines a framework for using
   Secure Telephone Identity Revisited (STIR) protocols including
   PASSporT [RFC8225], SIP Authenticated Identity Management [RFC8224]
   and the STIR certificate framework [RFC8226] for implementing the
   cryptographic validation of an authorized originator of telephone
   calls using SIP.  Because the current telephone network contains both
   VoIP and TDM/SS7 originated traffic, there are many scenarios that
   need to be accounted for where PASSporT signatures may represent
   either direct or indirect call origination scenarios.  The SHAKEN
   [ATIS-1000074] specification defines levels of attestation of the
   origination of the call as well as an origination identifier that can
   help create a unique association between the origin of a particular
   call to the point in the VoIP or TDM telephone network the call came
   from to identify, for example, either a customer or class of service
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