draft-ietf-ace-oauth-params-04.txt   draft-ietf-ace-oauth-params-05.txt 
ACE Working Group L. Seitz ACE Working Group L. Seitz
Internet-Draft RISE Internet-Draft RISE
Intended status: Standards Track February 11, 2019 Intended status: Standards Track March 25, 2019
Expires: August 15, 2019 Expires: September 26, 2019
Additional OAuth Parameters for Authorization in Constrained Additional OAuth Parameters for Authorization in Constrained
Environments (ACE) Environments (ACE)
draft-ietf-ace-oauth-params-04 draft-ietf-ace-oauth-params-05
Abstract Abstract
This specification defines new parameters for the OAuth 2.0 token and This specification defines new parameters for the OAuth 2.0 token and
introspection endpoints when used with the framework for introspection endpoints when used with the framework for
authentication and authorization for constrained environments (ACE). authentication and authorization for constrained environments (ACE).
These are used to express the proof-of-possession key the client These are used to express the proof-of-possession key the client
whishes to use, the proof-of-possession key that the AS has selected, whishes to use, the proof-of-possession key that the AS has selected,
and the key the RS should use to authenticate to the client. and the key the RS should use 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
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
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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 August 15, 2019. This Internet-Draft will expire on September 26, 2019.
Copyright Notice Copyright Notice
Copyright (c) 2019 IETF Trust and the persons identified as the Copyright (c) 2019 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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6. CBOR Mappings 6. CBOR Mappings
If CBOR is used, the new parameters and claims defined in this If CBOR is used, the new parameters and claims defined in this
document MUST be mapped to CBOR types as specified in Figure 5, using document MUST be mapped to CBOR types as specified in Figure 5, using
the given integer abbreviation for the map key. the given integer abbreviation for the map key.
/-----------------+----------+----------------------------------\ /-----------------+----------+----------------------------------\
| Parameter name | CBOR Key | Value Type | | Parameter name | CBOR Key | Value Type |
|-----------------+----------+----------------------------------| |-----------------+----------+----------------------------------|
| cnf | 8 | map | | req_cnf | TBD (4) | map |
| rs_cnf | 11 | map | | cnf | TBD (8) | map |
| req_cnf | 12 | map | | rs_cnf | TBD (41) | map |
\-----------------+----------+----------------------------------/ \-----------------+----------+----------------------------------/
Figure 5: CBOR mappings for new parameters. Figure 5: CBOR mappings for new parameters.
7. Security Considerations 7. Security Considerations
This document is an extension to [I-D.ietf-ace-oauth-authz]. All This document is an extension to [I-D.ietf-ace-oauth-authz]. All
security considerations from that document apply here as well. security considerations from that document apply here as well.
8. Privacy Considerations 8. Privacy Considerations
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9.2. CBOR Web Token Claims 9.2. CBOR Web Token Claims
This specification registers the following new claim in the "CBOR Web This specification registers the following new claim in the "CBOR Web
Token (CWT) Claims" registry [IANA.CborWebTokenClaims]. Token (CWT) Claims" registry [IANA.CborWebTokenClaims].
o Claim Name: "rs_cnf" o Claim Name: "rs_cnf"
o Claim Description: The public key the RS is supposed to use to o Claim Description: The public key the RS is supposed to use to
authenticate to the client wielding this token. authenticate to the client wielding this token.
o JWT Claim Name: rs_cnf o JWT Claim Name: rs_cnf
o Claim Key: TBD (suggested: 40) o Claim Key: TBD (suggested: 41)
o Claim Value Type(s): map o Claim Value Type(s): map
o Change Controller: IESG o Change Controller: IESG
o Specification Document(s): Section 3.3 of [this document] o Specification Document(s): Section 3.3 of [this document]
9.3. OAuth Parameter Registration 9.3. OAuth Parameter Registration
This section registers the following parameters in the "OAuth This section registers the following parameters in the "OAuth
Parameters" registry [IANA.OAuthParameters]: Parameters" registry [IANA.OAuthParameters]:
o Name: "req_cnf" o Name: "req_cnf"
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o Change Controller: IESG o Change Controller: IESG
o Reference: Section 4.1 of [this document] o Reference: Section 4.1 of [this document]
9.5. Token Endpoint CBOR Mappings Registraton 9.5. Token Endpoint CBOR Mappings Registraton
This section registers the following parameter mappings in the "Token This section registers the following parameter mappings in the "Token
Endpoint CBOR Mappings" registry established in section 8.9. of Endpoint CBOR Mappings" registry established in section 8.9. of
[I-D.ietf-ace-oauth-authz]. [I-D.ietf-ace-oauth-authz].
o Name: "req_cnf" o Name: "req_cnf"
o CBOR key: 19 o CBOR key: TBD (suggested: 4)
o Change Controller: IESG o Change Controller: IESG
o Reference: Section 3.1 of [this document] o Reference: Section 3.1 of [this document]
o Name: "cnf" o Name: "cnf"
o CBOR key: 8 o CBOR key: TBD (suggested: 8)
o Change Controller: IESG o Change Controller: IESG
o Reference: Section 3.2 of [this document] o Reference: Section 3.2 of [this document]
o Name: "rs_cnf" o Name: "rs_cnf"
o CBOR key: 17 o CBOR key: TBD (suggested: 41)
o Change Controller: IESG o Change Controller: IESG
o Reference: Section 3.2 of [this document] o Reference: Section 3.2 of [this document]
9.6. Introspection Endpoint CBOR Mappings Registraton 9.6. Introspection Endpoint CBOR Mappings Registraton
This section registers the following parameter mappings in the This section registers the following parameter mappings in the
"Introspection Endpoint CBOR Mappings" registry established in "Introspection Endpoint CBOR Mappings" registry established in
section 8.11. of [I-D.ietf-ace-oauth-authz]. section 8.11. of [I-D.ietf-ace-oauth-authz].
o Name: "cnf" o Name: "cnf"
o CBOR key: 8 o CBOR key: TBD (suggested: 8)
o Change Controller: IESG o Change Controller: IESG
o Reference: Section 4.1 of [this document] o Reference: Section 4.1 of [this document]
o Name: "rs_cnf" o Name: "rs_cnf"
o CBOR key: 17 o CBOR key: TBD (suggested: 41)
o Change Controller: IESG o Change Controller: IESG
o Reference: Section 4.1 of [this document] o Reference: Section 4.1 of [this document]
10. Acknowledgments 10. Acknowledgments
This document is a product of the ACE working group of the IETF. This document is a product of the ACE working group of the IETF.
Ludwig Seitz worked on this document as part of the CelticPlus Ludwig Seitz worked on this document as part of the CelticNext
project CyberWI, with funding from Vinnova. projects CyberWI, and CRITISEC with funding from Vinnova.
11. References 11. References
11.1. Normative References 11.1. Normative References
[I-D.ietf-ace-cwt-proof-of-possession] [I-D.ietf-ace-cwt-proof-of-possession]
Jones, M., Seitz, L., Selander, G., Erdtman, S., and H. Jones, M., Seitz, L., Selander, G., Erdtman, S., and H.
Tschofenig, "Proof-of-Possession Key Semantics for CBOR Tschofenig, "Proof-of-Possession Key Semantics for CBOR
Web Tokens (CWTs)", draft-ietf-ace-cwt-proof-of- Web Tokens (CWTs)", draft-ietf-ace-cwt-proof-of-
possession-05 (work in progress), November 2018. possession-06 (work in progress), February 2019.
[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-18 Framework (ACE-OAuth)", draft-ietf-ace-oauth-authz-22
(work in progress), January 2019. (work in progress), March 2019.
[IANA.CborWebTokenClaims] [IANA.CborWebTokenClaims]
IANA, "CBOR Web Token (CWT) Claims", IANA, "CBOR Web Token (CWT) Claims",
<https://www.iana.org/assignments/cwt/ <https://www.iana.org/assignments/cwt/
cwt.xhtml#claims-registry>. cwt.xhtml#claims-registry>.
[IANA.JsonWebTokenClaims] [IANA.JsonWebTokenClaims]
IANA, "JSON Web Token Claims", IANA, "JSON Web Token Claims",
<https://www.iana.org/assignments/jwt/jwt.xhtml#claims>. <https://www.iana.org/assignments/jwt/jwt.xhtml#claims>.
skipping to change at page 12, line 32 skipping to change at page 12, line 32
<https://www.rfc-editor.org/info/rfc7252>. <https://www.rfc-editor.org/info/rfc7252>.
[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC [RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174, 2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
May 2017, <https://www.rfc-editor.org/info/rfc8174>. May 2017, <https://www.rfc-editor.org/info/rfc8174>.
11.2. Informative References 11.2. Informative References
[I-D.ietf-oauth-pop-key-distribution] [I-D.ietf-oauth-pop-key-distribution]
Bradley, J., Hunt, P., Jones, M., Tschofenig, H., and M. Bradley, J., Hunt, P., Jones, M., Tschofenig, H., and M.
Mihaly, "OAuth 2.0 Proof-of-Possession: Authorization Meszaros, "OAuth 2.0 Proof-of-Possession: Authorization
Server to Client Key Distribution", draft-ietf-oauth-pop- Server to Client Key Distribution", draft-ietf-oauth-pop-
key-distribution-04 (work in progress), October 2018. key-distribution-06 (work in progress), March 2019.
Appendix A. Overlap with OAuth work Appendix A. Overlap with OAuth work
This document overlaps with draft work from OAuth on proof-of- This document overlaps with draft work from OAuth on proof-of-
possesion keys [I-D.ietf-oauth-pop-key-distribution]. possesion keys [I-D.ietf-oauth-pop-key-distribution].
The OAuth draft specifies the use of "req_cnf" and "cnf" for The OAuth draft specifies the use of "req_cnf" and "cnf" for
requesting proof-of-possession tokens and indicating the key that the requesting proof-of-possession tokens and indicating the key that the
AS has selected. It it was initially deemed that the work at OAuth AS has selected. It it was initially deemed that the work at OAuth
had been discontinued and therefore equivalent functionality was had been discontinued and therefore equivalent functionality was
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