Datagram Transport Layer Security (DTLS) Profile for Authentication and Authorization for Constrained Environments (ACE)
draft-ietf-ace-dtls-authorize-15
| Document | Type | Active Internet-Draft (ace WG) | |
|---|---|---|---|
| Authors | Stefanie Gerdes , Olaf Bergmann , Carsten Bormann , Göran Selander , Ludwig Seitz | ||
| Last updated | 2021-01-20 | ||
| Replaces | draft-gerdes-ace-dtls-authorize | ||
| Stream | IETF | ||
| Intended RFC status | Proposed Standard | ||
| Formats | plain text xml pdf htmlized (tools) htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Jim Schaad | ||
| Shepherd write-up | Show (last changed 2020-01-01) | ||
| IESG | IESG state | Waiting for Writeup::External Party | |
| Action Holders |
(None)
|
||
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Benjamin Kaduk | ||
| Send notices to | Jim Schaad <ietf@augustcellars.com> | ||
| IANA | IANA review state | Version Changed - Review Needed | |
ACE Working Group S. Gerdes
Internet-Draft O. Bergmann
Intended status: Standards Track C. Bormann
Expires: 24 July 2021 Universität Bremen TZI
G. Selander
Ericsson AB
L. Seitz
Combitech
20 January 2021
Datagram Transport Layer Security (DTLS) Profile for Authentication and
Authorization for Constrained Environments (ACE)
draft-ietf-ace-dtls-authorize-15
Abstract
This specification defines a profile of the ACE framework that allows
constrained servers to delegate client authentication and
authorization. The protocol relies on DTLS version 1.2 for
communication security between entities in a constrained network
using either raw public keys or pre-shared keys. A resource-
constrained server can use this protocol to delegate management of
authorization information to a trusted host with less severe
limitations regarding processing power and memory.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on 24 July 2021.
Copyright Notice
Copyright (c) 2021 IETF Trust and the persons identified as the
document authors. All rights reserved.
Gerdes, et al. Expires 24 July 2021 [Page 1]
Internet-Draft CoAP-DTLS January 2021
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.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 4
2. Protocol Overview . . . . . . . . . . . . . . . . . . . . . . 4
3. Protocol Flow . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1. Communication Between the Client and the Authorization
Server . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2. RawPublicKey Mode . . . . . . . . . . . . . . . . . . . . 7
3.2.1. Access Token Retrieval from the Authorization
Server . . . . . . . . . . . . . . . . . . . . . . . 7
3.2.2. DTLS Channel Setup Between Client and Resource
Server . . . . . . . . . . . . . . . . . . . . . . . 9
3.3. PreSharedKey Mode . . . . . . . . . . . . . . . . . . . . 10
3.3.1. Access Token Retrieval from the Authorization
Server . . . . . . . . . . . . . . . . . . . . . . . 10
3.3.2. DTLS Channel Setup Between Client and Resource
Server . . . . . . . . . . . . . . . . . . . . . . . 14
3.4. Resource Access . . . . . . . . . . . . . . . . . . . . . 16
4. Dynamic Update of Authorization Information . . . . . . . . . 18
5. Token Expiration . . . . . . . . . . . . . . . . . . . . . . 19
6. Secure Communication with an Authorization Server . . . . . . 20
7. Security Considerations . . . . . . . . . . . . . . . . . . . 20
7.1. Reuse of Existing Sessions . . . . . . . . . . . . . . . 21
7.2. Multiple Access Tokens . . . . . . . . . . . . . . . . . 22
7.3. Out-of-Band Configuration . . . . . . . . . . . . . . . . 22
8. Privacy Considerations . . . . . . . . . . . . . . . . . . . 23
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 23
10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 24
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 24
11.1. Normative References . . . . . . . . . . . . . . . . . . 24
Show full document text