The Messaging Layer Security (MLS) Protocol

Source: RFC 9420 Authors: Richard Barnes, Benjamin Beurdouche, Raphael Robert, Jon Millican, Emad Omara, Katriel Cohn-Gordon Date: 2023-07

Core idea

MLS provides efficient asynchronous group key establishment with explicit group epochs, forward secrecy, and post-compromise security for large groups.

Harness takeaway

A distributed actor or coalition in the studio should treat embodiment changes, membership updates, and role reassignment as explicit epoch transitions that roll security and context material forward safely.