The following errata report has been verified for RFC8773,
"TLS 1.3 Extension for Certificate-Based Authentication with an External 
Pre-Shared Key". 

--------------------------------------
You may review the report below and at:
https://www.rfc-editor.org/errata/eid8888

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Status: Verified
Type: Technical

Reported by: Muhammad Usama Sardar <[email protected]>
Date Reported: 2026-04-24
Verified by: Deb Cooley (IESG)

Section: 7

Original Text
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Early Secret = HKDF-Extract(External PSK, 0)

Corrected Text
--------------
Early Secret = HKDF-Extract(0, External PSK)

Notes
-----
As discussed in 
https://mailarchive.ietf.org/arch/msg/tls/6Wk82oBGd61rTK23DgfYb7BmRKM/ and 
https://github.com/tlswg/rfc8773bis/pull/2

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RFC8773 (draft-ietf-tls-tls13-cert-with-extern-psk-07)
--------------------------------------
Title               : TLS 1.3 Extension for Certificate-Based Authentication 
with an External Pre-Shared Key
Publication Date    : March 2020
Author(s)           : R. Housley
Category            : EXPERIMENTAL
Source              : Transport Layer Security
Stream              : IETF
Verifying Party     : IESG

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