Vectors of Trust
RFC 8485

Document Type RFC - Proposed Standard (October 2018; No errata)
Was draft-richer-vectors-of-trust (individual in sec area)
Last updated 2018-10-12
Stream IETF
Formats plain text pdf html bibtex
Reviews
Stream WG state (None)
Document shepherd Sean Turner
Shepherd write-up Show (last changed 2018-03-18)
IESG IESG state RFC 8485 (Proposed Standard)
Consensus Boilerplate Yes
Telechat date
Responsible AD Benjamin Kaduk
Send notices to (None)
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
Internet Engineering Task Force (IETF)                    J. Richer, Ed.
Request for Comments: 8485                           Bespoke Engineering
Category: Standards Track                                   L. Johansson
ISSN: 2070-1721                               Swedish University Network
                                                            October 2018

                            Vectors of Trust

Abstract

   This document defines a mechanism for describing and signaling
   several aspects of a digital identity transaction and its
   participants.  These aspects are used to determine the amount of
   trust to be placed in that transaction.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   https://www.rfc-editor.org/info/rfc8485.

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
   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.

Richer & Johansson           Standards Track                    [Page 1]
RFC 8485                    Vectors of Trust                October 2018

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   4
     1.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   4
     1.3.  Identity Model  . . . . . . . . . . . . . . . . . . . . .   5
     1.4.  Component Architecture  . . . . . . . . . . . . . . . . .   6
   2.  Component Dimension Definitions . . . . . . . . . . . . . . .   6
     2.1.  Identity Proofing (P) . . . . . . . . . . . . . . . . . .   7
     2.2.  Primary Credential Usage (C)  . . . . . . . . . . . . . .   8
     2.3.  Primary Credential Management (M) . . . . . . . . . . . .   8
     2.4.  Assertion Presentation (A)  . . . . . . . . . . . . . . .   8
   3.  Communicating Vector Values to RPs  . . . . . . . . . . . . .   9
     3.1.  On-the-Wire Representation  . . . . . . . . . . . . . . .  10
     3.2.  In OpenID Connect . . . . . . . . . . . . . . . . . . . .  11
   4.  Requesting Vector Values  . . . . . . . . . . . . . . . . . .  11
     4.1.  In OpenID Connect . . . . . . . . . . . . . . . . . . . .  12
   5.  Trustmarks  . . . . . . . . . . . . . . . . . . . . . . . . .  12
   6.  Defining New Vector Values  . . . . . . . . . . . . . . . . .  13
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
     7.1.  Vector of Trust Components Registry . . . . . . . . . . .  14
       7.1.1.  Registration Template . . . . . . . . . . . . . . . .  14
       7.1.2.  Initial Registry Contents . . . . . . . . . . . . . .  15
     7.2.  Addition to the OAuth Parameters Registry . . . . . . . .  15
     7.3.  Additions to JWT Claims Registry  . . . . . . . . . . . .  16
     7.4.  Additions to OAuth Token Introspection Response . . . . .  16
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  16
   9.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  17
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  17
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  17
     10.2.  Informative References . . . . . . . . . . . . . . . . .  18
   Appendix A.  Vectors of Trust Default Component Value Definitions  19
     A.1.  Identity Proofing . . . . . . . . . . . . . . . . . . . .  19
     A.2.  Primary Credential Usage  . . . . . . . . . . . . . . . .  20
     A.3.  Primary Credential Management . . . . . . . . . . . . . .  20
     A.4.  Assertion Presentation  . . . . . . . . . . . . . . . . .  21
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .  21
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  21

Richer & Johansson           Standards Track                    [Page 2]
RFC 8485                    Vectors of Trust                October 2018

1.  Introduction

   Methods for measuring trust in digital identity transactions have
Show full document text