RFC 9820

Authentication Service Based on the Extensible Authentication Protocol (EAP) for Use with the Constrained Application Protocol (CoAP), September 2025

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Status:
PROPOSED STANDARD
Authors:
R. Marin-Lopez
D. Garcia-Carrillo
Stream:
IETF
Source:
ace (sec)

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DOI:  https://doi.org/10.17487/RFC9820

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Abstract

This document specifies an authentication service that uses the Constrained Application Protocol (CoAP) as a transport method to carry the Extensible Authentication Protocol (EAP). As such, it defines an EAP lower layer based on CoAP called "CoAP-EAP". One of the main goals is to authenticate a CoAP-enabled Internet of Things (IoT) device (EAP peer) that intends to join a security domain managed by a Controller (EAP authenticator). Secondly, it allows deriving key material to protect CoAP messages exchanged between them based on Object Security for Constrained RESTful Environments (OSCORE), enabling the establishment of a security association between them.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.




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