PASSporT SHAKEN Extension (SHAKEN)
draft-wendt-stir-passport-shaken-00

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stir                                                            C. Wendt
Internet-Draft                                                   Comcast
Intended status: Standards Track                               M. Barnes
Expires: January 4, 2018                     MLB@Realtime Communications
                                                           July 03, 2017

                   PASSporT SHAKEN Extension (SHAKEN)
                  draft-wendt-stir-passport-shaken-00

Abstract

   This document extends PASSporT, a token object that conveys
   cryptographically-signed information about the participants involved
   in personal communications, to include information defined as part of
   the SHAKEN [ATIS-1000074] specification for indicating an attestation
   level and originating ID.

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   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Wendt & Barnes           Expires January 4, 2018                [Page 1]
Internet-Draft                    idreg                        July 2017

   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.  PASSporT 'attest' Claim . . . . . . . . . . . . . . . . . . .   2
   4.  PASSporT 'origid' Claim . . . . . . . . . . . . . . . . . . .   3
   5.  Example . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
   6.  Using 'shaken' in SIP . . . . . . . . . . . . . . . . . . . .   3
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   3
     7.1.  JSON Web Token claims . . . . . . . . . . . . . . . . . .   3
     7.2.  PASSporT Types  . . . . . . . . . . . . . . . . . . . . .   4
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   4
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   4
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     10.1.  Normative References . . . . . . . . . . . . . . . . . .   4
     10.2.  Informative References . . . . . . . . . . . . . . . . .   5
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   5

1.  Introduction

   The SHAKEN specification defines a framework for using STIR protocols
   including PASSporT and the STIR certificate framework 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 is 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 attribution 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].

3.  PASSporT 'attest' Claim

   This indicator allows for both identifying the service provider that
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