Technical Summary
This document describes a mechanism in Transport Layer Security (TLS)
for encrypting a ClientHello message under a server public key.
Working Group Summary
The document has broad consensus. While there are some concerns about the
ease with with this can (and is) being filtered, extension work to prevent
this in the future has started and will not require changes to this document.
Document Quality
Draft versions of this protocol have been deployed and tested at scale. A
number of vendors have implemented this protocol and tested interoperability.
Some of the implementers include: Server Side - Google, Cloudflare Client Side,
Firefox, Chrome
There is code available several libraries including OpenSSL, BoringSSL and rustls
Personnel
The Document Shepherd for this document is Joseph A. Salowey. The
Responsible Area Director is Paul Wouters.