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Compact TLS 1.3

Document Type Replaced Internet-Draft (candidate for tls WG)
Expired & archived
Authors Eric Rescorla , Richard Barnes , Hannes Tschofenig
Last updated 2020-03-09
Replaced by draft-ietf-tls-ctls
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Additional resources Mailing list discussion
Stream WG state Call For Adoption By WG Issued
Associated WG milestone
Jul 2021
Submit "Compact TLS 1.3" to the IESG
Document shepherd (None)
IESG IESG state Replaced by draft-ietf-tls-ctls
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document specifies a "compact" version of TLS 1.3. It is isomorphic to TLS 1.3 but saves space by trimming obsolete material, tighter encoding, and a template-based specialization technique. cTLS is not directly interoperable with TLS 1.3, but it should eventually be possible for a cTLS/TLS 1.3 server to exist and successfully interoperate.


Eric Rescorla
Richard Barnes
Hannes Tschofenig

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)