The Messaging Layer Security (MLS) Federation

Document Type Replaced Internet-Draft (mls WG)
Authors Emad Omara  , Raphael Robert 
Last updated 2019-04-25 (latest revision 2019-03-11)
Replaced by draft-ietf-mls-federation
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream WG state Adopted by a WG
Document shepherd No shepherd assigned
IESG IESG state Replaced by draft-ietf-mls-federation
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes how the Messaging Layer Security (MLS) can be used in a federated environment where different MLS implementations can interoperate by defining the message format for user key retrieval. The document also describes some use cases where federation could be useful.


Emad Omara (
Raphael Robert (

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