[TLS] Secdir telechat review of draft-ietf-tls-exported-authenticator-14

[Yaron Sheffer via Datatracker <[e-mail]>]

Reviewer: Yaron Sheffer
Review result: Has Issues

After a bit of back and forth over my *two* previous SecDir requests, I'm
afraid that my original comment has not yet been fully addressed. The IANA
considerations section (Sec. 8.1) adds server_name as a possible extension for
CertificateRequest. This would be a non-backward compatible change to TLS.

IMO what we needed to do is both to clarify the allowed extensions for what
Nick called "the CR-like structure" (almost done in Sec. 4, though the last
sentence should by changed to include CertificateRequest) and undo the change
to the TLS ExtensionType registry (not done, would require to remove Sec. 8.1).

* Nit: this sentence is repeated almost verbatim in Sec. 4 and Sec. 5, and in
both cases is mangled.

Old:

The application layer protocol used to send the authenticator request SHOULD
use a secure with equivalent security to TLS, such as QUIC [QUIC-TLS], as its
as its underlying transport to keep the request confidential.

New:

The application layer protocol used to send the authenticator request SHOULD
use a secure *channel* with equivalent security to TLS, such as QUIC
[QUIC-TLS], as its ~~as its~~ underlying transport to keep the request
confidential.