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RFC 9770: Notification of Revoked Access Tokens in the Authentication and Authorization for Constrained Environments (ACE) Framework

In plain English — editorial summary, not part of the RFC

This document specifies a method of the Authentication and Authorization for Constrained Environments (ACE) framework, which allows an authorization server to notify clients and resource servers (i.e., registered devices) about revoked access tokens. As specified in this document, the method allows clients and resource servers (RSs) to access a Token Revocation List (TRL) on the authorization server by using the Constrained Application Protocol (CoAP), with the possible additional use of resource observation. Resulting (unsolicited) notifications of revoked access tokens complement alternative approaches such as token introspection, while not requiring additional endpoints on clients and RSs.

Document record

Document ID
RFC9770
Published
June 2025
Authors
M. Tiloca; F. Palombini; S. Echeverria; G. Lewis
Status
PROPOSED STANDARD
Stream
IETF
Area
sec
Pages
64
Also known as
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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

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