title: Messaging Layer Security aliases:

• Messaging Layer Security link: https://messaginglayersecurity.rocks tags:
• standards
• e2ee
• IETF

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

• federation spec
• [[p2panda]] is local first and p2p, and implements MLS - see about page
• [[Matrix]] has notes on Decentralized MLS

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