PASSporT SHAKEN Extension (SHAKEN)
draft-ietf-stir-passport-shaken-02

Document Type Active Internet-Draft (stir WG)
Last updated 2018-04-29 (latest revision 2018-03-19)
Replaces draft-wendt-stir-passport-shaken
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stir                                                            C. Wendt
Internet-Draft                                                   Comcast
Intended status: Standards Track                               M. Barnes
Expires: September 20, 2018                                    iconectiv
                                                          March 19, 2018

                   PASSporT SHAKEN Extension (SHAKEN)
                   draft-ietf-stir-passport-shaken-02

Abstract

   This document extends PASSporT, which is a token object that conveys
   cryptographically-signed information about the participants involved
   in communications, to include information defined as part of the
   SHAKEN specification from ATIS (Alliance for Telecommunications
   Industry Solutions) and the SIP Forum IP-NNI Joint Task Force.  These
   extensions provide a level of confidence in the correctness of the
   originating identity for a telephone network that has communications
   coming from both STIR participating originating communications as
   well as communications that does not include STIR information.

Status of This Memo

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   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on September 20, 2018.

Copyright Notice

   Copyright (c) 2018 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

Wendt & Barnes         Expires September 20, 2018               [Page 1]
Internet-Draft                   shaken                       March 2018

   carefully, as they describe your rights and restrictions with respect
   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 . . . . . . . . . . . . . . . . . . . . . . . . .   2
   3.  Overview of 'shaken' PASSporT extension . . . . . . . . . . .   3
   4.  PASSporT 'attest' Claim . . . . . . . . . . . . . . . . . . .   3
   5.  PASSporT 'origid' Claim . . . . . . . . . . . . . . . . . . .   4
   6.  Example . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   7.  Using 'shaken' in SIP . . . . . . . . . . . . . . . . . . . .   5
   8.  Order of Claim Keys . . . . . . . . . . . . . . . . . . . . .   5
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
     9.1.  JSON Web Token claims . . . . . . . . . . . . . . . . . .   5
     9.2.  PASSporT Types  . . . . . . . . . . . . . . . . . . . . .   6
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   6
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     11.1.  Normative References . . . . . . . . . . . . . . . . . .   6
     11.2.  Informative References . . . . . . . . . . . . . . . . .   7
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   7

1.  Introduction

   The SHAKEN [ATIS-1000074] specification defines a framework for using
   STIR protocols including PASSporT [RFC8225], RFC4474bis [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 with the origination of calls from
   various parts of the VoIP or TDM telephone network.  This document
   specifies these indicators as a specified PASSporT extension.

2.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].
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