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RFC 9973
Title: TLS 1.3 Extension for Using Certificates
with an External Pre-Shared Key
Author: R. Housley
Status: Proposed Standard
Stream: IETF
Date: July 2026
Mailbox: [email protected]
Pages: 13
Obsoletes: RFC 8773
I-D Tag: draft-ietf-tls-8773bis-13
URL: https://www.rfc-editor.org/info/rfc9973
DOI: 10.17487/RFC9973
This document specifies a TLS 1.3 extension that allows TLS clients and servers
to authenticate with certificates and provide confidentiality based on
encryption with a symmetric key from the usual key agreement algorithm and an
external pre-shared key (PSK). This Standards Track RFC obsoletes RFC 8773,
which was an Experimental RFC.
This document is a product of the Transport Layer Security Working Group of the
IETF.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and
suggestions for improvements. Distribution of this memo is unlimited.
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