PASSporT Extension for Rich Call Data
draft-ietf-stir-passport-rcd-00

Document Type Active Internet-Draft (stir WG)
Last updated 2017-07-05 (latest revision 2017-07-03)
Replaces draft-peterson-stir-cnam
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Network Working Group                                        J. Peterson
Internet-Draft                                                   Neustar
Intended status: Informational                                  C. Wendt
Expires: January 4, 2018                                         Comcast
                                                            July 3, 2017

                 PASSporT Extension for Rich Call Data
                  draft-ietf-stir-passport-rcd-00.txt

Abstract

   This document extends PASSporT, a token for conveying
   cryptographically-signed information about personal communications,
   to include rich data that can be rendered to users, such as a human-
   readable display name comparable to the "Caller ID" function common
   on the telephone network.  The element defined for this purpose is
   extensible to include related information about calls that helps
   people decide whether to pick up the phone.

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 January 4, 2018.

Copyright Notice

   Copyright (c) 2017 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
   (http://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
   to this document.  Code Components extracted from this document must

Peterson & Wendt         Expires January 4, 2018                [Page 1]
Internet-Draft              STIR Caller Name                   July 2017

   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.  PASSporT 'rcd' Claim  . . . . . . . . . . . . . . . . . . . .   3
   4.  Further Information Associated with Callers . . . . . . . . .   4
   5.  Third-Party Uses  . . . . . . . . . . . . . . . . . . . . . .   5
     5.1.  Signing as a Third Party  . . . . . . . . . . . . . . . .   6
   6.  Levels of Assurance . . . . . . . . . . . . . . . . . . . . .   6
   7.  Using 'rcd' in SIP  . . . . . . . . . . . . . . . . . . . . .   6
     7.1.  Authentication Service Behavior . . . . . . . . . . . . .   7
     7.2.  Verification Service Behavior . . . . . . . . . . . . . .   7
   8.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   8
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
     9.1.  JSON Web Token Claims . . . . . . . . . . . . . . . . . .   8
     9.2.  PASSporT Types  . . . . . . . . . . . . . . . . . . . . .   9
     9.3.  PASSporT RCD Types  . . . . . . . . . . . . . . . . . . .   9
   10. Security Considerations . . . . . . . . . . . . . . . . . . .   9
   11. Informative References  . . . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   PASSporT [I-D.ietf-stir-passport] is a token format based on JWT
   [RFC7519] for conveying cryptographically-signed information about
   the people involved in personal communications; it is used with STIR
   [I-D.ietf-stir-rfc4474bis] to convey a signed assertion of the
   identity of the participants in real-time communications established
   via a protocol like SIP.  The STIR problem statement [RFC7340]
   declared securing the display name of callers outside of STIR's
   initial scope, so baseline STIR provides no features for caller name.
   This specification documents an optional mechanism for PASSporT and
   the associated STIR mechanisms which extends PASSporT to carry
   additional elements conveying richer information: information that is
   intended to be rendered to an end user to assist a called party in
   determining whether to accept or trust incoming communications.  This
   includes the name of the person on one side of a communications
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