[Ace] RFC 9431 on Message Queuing Telemetry Transport (MQTT) and Transport Layer Security (TLS) Profile of Authentication and Authorization for Constrained Environments (ACE) Framework

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        RFC 9431

        Title:      Message Queuing Telemetry Transport (MQTT) 
                    and Transport Layer Security (TLS) Profile 
                    of Authentication and Authorization for Constrained 
                    Environments (ACE) Framework 
        Author:     C. Sengul,
                    A. Kirby
        Status:     Standards Track
        Stream:     IETF
        Date:       July 2023
        Mailbox:    csengul@acm.org,
                    anthony@anthony.org
        Pages:      33
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-ace-mqtt-tls-profile-17.txt

        URL:        https://www.rfc-editor.org/info/rfc9431

        DOI:        10.17487/RFC9431

This document specifies a profile for the Authentication and
Authorization for Constrained Environments (ACE) framework to enable
authorization in a publish-subscribe messaging system based on
Message Queuing Telemetry Transport (MQTT). Proof-of-Possession keys,
bound to OAuth 2.0 access tokens, are used to authenticate and
authorize MQTT Clients. The protocol relies on TLS for
confidentiality and MQTT server (Broker) authentication.

This document is a product of the Authentication and Authorization for Constrained Environments Working Group of the IETF.

This is now a Proposed Standard.

STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements.  Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the 
standardization state and status of this protocol.  Distribution of this 
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