Additional OAuth Parameters for Authorization in Constrained Environments (ACE)
draft-ietf-ace-oauth-params-02

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Last updated 2019-01-29
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ACE Working Group                                               L. Seitz
Internet-Draft                                                      RISE
Intended status: Standards Track                        January 29, 2019
Expires: August 2, 2019

      Additional OAuth Parameters for Authorization in Constrained
                           Environments (ACE)
                     draft-ietf-ace-oauth-params-02

Abstract

   This specification defines new parameters for the OAuth 2.0 token and
   introspection endpoints when used with the framework for
   authentication and authorization for constrained environments (ACE).
   These are used to express the desired audience of a requested access
   token, the desired proof-of-possession key, the proof-of-possession
   key that the AS has selected, and the key the RS should use to
   authenticate to the client.

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   This Internet-Draft will expire on August 2, 2019.

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Seitz                    Expires August 2, 2019                 [Page 1]
Internet-Draft              ACE-OAuth-Params                January 2019

   include Simplified BSD License text as described in Section 4.e of
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   2
   3.  Parameters for the Token Endpoint . . . . . . . . . . . . . .   3
     3.1.  Client-to-AS Request  . . . . . . . . . . . . . . . . . .   3
     3.2.  AS-to-Client Response . . . . . . . . . . . . . . . . . .   4
     3.3.  The Resource Server Confirmation Claim  . . . . . . . . .   6
   4.  Parameters for the Introspection Endpoint . . . . . . . . . .   6
     4.1.  AS-to-RS Response . . . . . . . . . . . . . . . . . . . .   6
   5.  Confirmation Method Parameters  . . . . . . . . . . . . . . .   7
   6.  CBOR Mappings . . . . . . . . . . . . . . . . . . . . . . . .   8
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   8.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .   9
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
     9.1.  JSON Web Token Claims . . . . . . . . . . . . . . . . . .   9
     9.2.  CBOR Web Token Claims . . . . . . . . . . . . . . . . . .  10
     9.3.  OAuth Parameter Registration  . . . . . . . . . . . . . .  10
     9.4.  OAuth Introspection Response Parameter Registration . . .  10
     9.5.  Token Endpoint CBOR Mappings Registraton  . . . . . . . .  11
     9.6.  Introspection Endpoint CBOR Mappings Registraton  . . . .  11
   10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  12
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  12
     11.2.  Informative References . . . . . . . . . . . . . . . . .  13
   Appendix A.  Overlap with OAuth work  . . . . . . . . . . . . . .  13
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  14

1.  Introduction

   The Authentication and Authorization for Constrained Environments
   (ACE) specification [I-D.ietf-ace-oauth-authz] requires some new
   parameters for interactions with the OAuth 2.0 [RFC6749] token and
   introspection endpoints, as well as some new claims to be used in
   access tokens.  These parameters and claims can also be used in other
   contexts, and may need to be updated to align them with ongoing OAuth
   work.  Therefore they have been split out into this document, which
   can be used and updated independently of [I-D.ietf-ace-oauth-authz].

2.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
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