OSCORE profile of the Authentication and Authorization for Constrained Environments Framework
draft-ietf-ace-oscore-profile-00
ACE Working Group L. Seitz
Internet-Draft RISE SICS AB
Intended status: Standards Track F. Palombini
Expires: June 15, 2018 Ericsson AB
M. Gunnarsson
RISE SICS AB
December 12, 2017
OSCORE profile of the Authentication and Authorization for Constrained
Environments Framework
draft-ietf-ace-oscore-profile-00
Abstract
This memo specifies a profile for the Authentication and
Authorization for Constrained Environments (ACE) framework. It
utilizes Object Security for Constrained RESTful Environments
(OSCORE) to provide communication security, server authentication,
and proof-of-possession for a key owned by the client and bound to an
OAuth 2.0 access token.
Status of This Memo
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
2. Client to Resource Server . . . . . . . . . . . . . . . . . . 3
2.1. Signaling the use of OSCORE . . . . . . . . . . . . . . . 3
2.2. Key establishment for OSCORE . . . . . . . . . . . . . . 4
3. Client to Authorization Server . . . . . . . . . . . . . . . 6
4. Resource Server to Authorization Server . . . . . . . . . . . 7
5. Security Considerations . . . . . . . . . . . . . . . . . . . 7
6. Privacy Considerations . . . . . . . . . . . . . . . . . . . 7
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 7
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 7
8.1. Normative References . . . . . . . . . . . . . . . . . . 7
8.2. Informative References . . . . . . . . . . . . . . . . . 8
Appendix A. Profile Requirements . . . . . . . . . . . . . . . . 9
Appendix B. Using the pop-key with EDHOC (EDHOC+OSCORE) . . . . 10
B.1. Using Asymmetric Keys . . . . . . . . . . . . . . . . . . 10
B.2. Using Symmetric Keys . . . . . . . . . . . . . . . . . . 12
B.3. Processing . . . . . . . . . . . . . . . . . . . . . . . 13
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 15
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 16
1. Introduction
This memo specifies a profile of the ACE framework
[I-D.ietf-ace-oauth-authz]. In this profile, a client and a resource
server use CoAP [RFC7252] to communicate. The client uses an access
token, bound to a key (the proof-of-possession key) to authorize its
access to the resource server. In order to provide communication
security, proof of possession, and server authentication they use
Object Security for Constrained RESTful Environments (OSCORE)
[I-D.ietf-core-object-security]. Optionally the client and the
resource server may also use CoAP and OSCORE to communicate with the
authorization server.
OSCORE specifies how to use CBOR Object Signing and Encryption (COSE)
[RFC8152] to secure CoAP messages. In order to provide replay and
reordering protection OSCORE also introduces sequence numbers that
are used together with COSE.
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