Messaging Layer Security
charter-ietf-mls-02

The Messaging Layer Security (MLS) protocol, RFC 9420, specifies a key
establishment protocol that provides efficient asynchronous group key
establishment with forward secrecy (FS) and post-compromise security (PCS)
for groups in size ranging from two to thousands.

The MLS WG will maintain the protocol and will work on the
following MLS protocol extensions:

• Support for use of MLS in protocols developed by the MIMI working group
• Support for new credential types
• Support for common operational patterns in messaging applications
• Support for quantum resistance
• Framework for safe extensibility
• Detection of lost application messages
• Support for sending messages to individual members of a group

Many of the extensions to support these features will be included in
draft-ietf-mls-extensions, but some of the extensions will be published in
separate specifications.