PASSporT Extension for Rich Call Data
draft-ietf-stir-passport-rcd-02

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Replaces draft-peterson-stir-cnam
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Network Working Group                                        J. Peterson
Internet-Draft                                              Neustar Inc.
Intended status: Standards Track                                C. Wendt
Expires: August 22, 2019                                         Comcast
                                                       February 18, 2019

                 PASSporT Extension for Rich Call Data
                    draft-ietf-stir-passport-rcd-02

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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   This Internet-Draft will expire on August 22, 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
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   (https://trustee.ietf.org/license-info) in effect on the date of
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Peterson & Wendt         Expires August 22, 2019                [Page 1]
Internet-Draft              STIR Caller Name               February 2019

   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
     3.1.  'nam' key . . . . . . . . . . . . . . . . . . . . . . . .   3
     3.2.  'jcd' key . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.3.  'jcl' key . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.4.  'rcd' Usage . . . . . . . . . . . . . . . . . . . . . . .   4
     3.5.  Example 'rcd' PASSporTs . . . . . . . . . . . . . . . . .   5
   4.  Further Information Associated with Callers . . . . . . . . .   6
   5.  Third-Party Uses  . . . . . . . . . . . . . . . . . . . . . .   7
     5.1.  Signing as a Third Party  . . . . . . . . . . . . . . . .   8
   6.  Levels of Assurance . . . . . . . . . . . . . . . . . . . . .   9
   7.  Using 'rcd' in SIP  . . . . . . . . . . . . . . . . . . . . .   9
     7.1.  Authentication Service Behavior . . . . . . . . . . . . .   9
     7.2.  Verification Service Behavior . . . . . . . . . . . . . .  10
   8.  Using 'rcd' as additional claims to other PASSporT extensions  11
     8.1.  Procedures for applying 'rcd' as claims only  . . . . . .  11
     8.2.  Example for applying 'rcd' as claims only . . . . . . . .  11
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  12
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
     10.1.  JSON Web Token Claim . . . . . . . . . . . . . . . . . .  12
     10.2.  PASSporT Types . . . . . . . . . . . . . . . . . . . . .  13
     10.3.  PASSporT RCD Types . . . . . . . . . . . . . . . . . . .  13
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  13
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  13
     12.2.  Informative References . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   PASSporT [RFC8225] is a token format based on JWT [RFC7519] for
   conveying cryptographically-signed information about the people
   involved in personal communications; it is used to convey a signed
   assertion of the identity of the participants in real-time
   communications established via a protocol like SIP [RFC8224].  The
   STIR problem statement [RFC7340] declared securing the display name
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