draft-ietf-ace-oauth-params-14.txt   draft-ietf-ace-oauth-params-15.txt 
ACE Working Group L. Seitz ACE Working Group L. Seitz
Internet-Draft Combitech Internet-Draft Combitech
Intended status: Standards Track March 25, 2021 Intended status: Standards Track May 5, 2021
Expires: September 26, 2021 Expires: November 6, 2021
Additional OAuth Parameters for Authorization in Constrained Additional OAuth Parameters for Authorization in Constrained
Environments (ACE) Environments (ACE)
draft-ietf-ace-oauth-params-14 draft-ietf-ace-oauth-params-15
Abstract Abstract
This specification defines new parameters and encodings for the OAuth This specification defines new parameters and encodings for the OAuth
2.0 token and introspection endpoints when used with the framework 2.0 token and introspection endpoints when used with the framework
for authentication and authorization for constrained environments for authentication and authorization for constrained environments
(ACE). These are used to express the proof-of-possession key the (ACE). These are used to express the proof-of-possession key the
client wishes to use, the proof-of-possession key that the client wishes to use, the proof-of-possession key that the
Authorization Server has selected, and the key the Resource Server Authorization Server has selected, and the key the Resource Server
uses to authenticate to the client. uses to authenticate to the client.
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
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Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on September 26, 2021. This Internet-Draft will expire on November 6, 2021.
Copyright Notice Copyright Notice
Copyright (c) 2021 IETF Trust and the persons identified as the Copyright (c) 2021 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of (https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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3.1. Client-to-AS Request 3.1. Client-to-AS Request
This section defines the "req_cnf" parameter allowing clients to This section defines the "req_cnf" parameter allowing clients to
request a specific proof-of-possession key in an access token from a request a specific proof-of-possession key in an access token from a
token endpoint in the ACE framework [I-D.ietf-ace-oauth-authz]: token endpoint in the ACE framework [I-D.ietf-ace-oauth-authz]:
req_cnf req_cnf
OPTIONAL. This field contains information about the key the OPTIONAL. This field contains information about the key the
client would like to bind to the access token for proof-of- client would like to bind to the access token for proof-of-
possession. It is RECOMMENDED that an AS reject a request possession. It is RECOMMENDED that an AS rejects a request
containing a symmetric key value in the 'req_cnf' field containing a symmetric key value in the 'req_cnf' field
(kty=Symmetric), since the AS is expected to be able to generate (kty=Symmetric), since the AS is expected to be able to generate
better symmetric keys than a constrained client (Note: this does better symmetric keys than a constrained client (Note: this does
not apply to key identifiers referencing a symmetric key). The AS not apply to key identifiers referencing a symmetric key). The AS
MUST verify that the client really is in possession of the MUST verify that the client really is in possession of the
corresponding key. Profiles of [I-D.ietf-ace-oauth-authz] using corresponding key. Profiles of [I-D.ietf-ace-oauth-authz] using
this specification MUST define the proof-of-possession method used this specification MUST define the proof-of-possession method used
by the AS, if they allow clients to use this request parameter. by the AS, if they allow clients to use this request parameter.
Values of this parameter follow the syntax and semantics of the Values of this parameter follow the syntax and semantics of the
"cnf" claim either from section 3.1 of [RFC8747] for CBOR-based "cnf" claim either from section 3.1 of [RFC8747] for CBOR-based
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projects CyberWI, and CRITISEC with funding from Vinnova. projects CyberWI, and CRITISEC with funding from Vinnova.
12. References 12. References
12.1. Normative References 12.1. Normative References
[I-D.ietf-ace-oauth-authz] [I-D.ietf-ace-oauth-authz]
Seitz, L., Selander, G., Wahlstroem, E., Erdtman, S., and Seitz, L., Selander, G., Wahlstroem, E., Erdtman, S., and
H. Tschofenig, "Authentication and Authorization for H. Tschofenig, "Authentication and Authorization for
Constrained Environments (ACE) using the OAuth 2.0 Constrained Environments (ACE) using the OAuth 2.0
Framework (ACE-OAuth)", draft-ietf-ace-oauth-authz-38 Framework (ACE-OAuth)", draft-ietf-ace-oauth-authz-40
(work in progress), March 2021. (work in progress), April 2021.
[IANA.OAuthParameters] [IANA.OAuthParameters]
IANA, "OAuth Parameters", IANA, "OAuth Parameters",
<https://www.iana.org/assignments/oauth-parameters/oauth- <https://www.iana.org/assignments/oauth-parameters/oauth-
parameters.xhtml#parameters>. parameters.xhtml#parameters>.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997, DOI 10.17487/RFC2119, March 1997,
<https://www.rfc-editor.org/info/rfc2119>. <https://www.rfc-editor.org/info/rfc2119>.
skipping to change at page 12, line 10 skipping to change at page 12, line 10
DOI 10.17487/RFC7252, June 2014, DOI 10.17487/RFC7252, June 2014,
<https://www.rfc-editor.org/info/rfc7252>. <https://www.rfc-editor.org/info/rfc7252>.
Author's Address Author's Address
Ludwig Seitz Ludwig Seitz
Combitech Combitech
Djaeknegatan 31 Djaeknegatan 31
Malmoe 211 35 Malmoe 211 35
Sweden Sweden
Email: ludwig.seitz@combitech.se Email: ludwig.seitz@combitech.com
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