Messaging Layer Security

Messaging Layer Security (MLS) is an IETF working group building a modern, efficient, secure group messaging protocol.

From the FAQ: Should I use this right now?

Yes! The protocol has been approved by the IESG and has been published as RFC9420. There are several implementations, of which some are open source.

List of existing MLS implementations

Open Questions

Is MLS compatible with decentralized architectures?1

Does MLS hide metadata? That is, can we tell who is talking to each other?

  1. Thanks Natanael for chasing down a bunch of these links 

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