What is Messaging Layer Security (MLS)?

Making MLS more decentralized

It’s no secret that we at Phoenix R&D are big fans of the Messaging Layer Security (MLS) protocol, having helped it to come into existence. It’s a versatile group key agreement and messaging protocol that’s used to power both asynchronous and real-time applications. MLS is relatively

OpenMLS

An open-source implementation of the Messaging Layer Security (MLS) protocol.

awslabs/mls-rs

An implementation of Messaging Layer Security (RFC 9420)

Investigation into Message Layer Security (MLS)

This article investigates Message Layer Security (MLS), the IETF standard protocol (RFC 9420) for Signal-style end-to-end encryption. Through a practical analysis of OpenMLS (the Rust reference implementation) and a demonstration CLI chat application (mls-chat), the post reveals the substantial gap between protocol specification and production deployment. Introduction MLS (Message Layer …

Decentralized Pairwise MLS — Germ Network

Today, MLS is predominantly used in a centralized context, where a central entity hosts group state. Germ now leverages this powerful technology for decentralized 1:1 conversations, by letting users cooperatively advance group state.

Autonomous Communicator (AC) Protocol — Germ Network

“Hi, I’m Mark, here’s how you can send a message to me.” Our Autonomous Communicator (AC) Protocol empowers people to autonomously define identities which they can exchange with others to form relationships for communicating over end-to-end encrypted (E2EE) messaging channels.

Secure messaging, anywhere - Briar

Secure messaging, anywhere

XMPP - The universal messaging standard

XMPP is the Extensible Messaging and Presence Protocol, a set of open technologies for instant messaging, presence, multi-party chat, voice and video calls, collaboration, lightweight middleware, content syndication, and generalized routing of XML data.

MCP and LLM Security Research Briefing | Wiz Blog

Explore the evolving Model Context Protocol (MCP), its security risks, and how to prepare for safe adoption as LLMs connect to external systems.

maqp/tfc

Tinfoil Chat - Onion-routed, endpoint secure messaging system

DIDComm: The Future of Secure and Decentralized Communication

How the W3C-Defined DIDComm Protocol is Revolutionizing Digital Messaging

Signal, the secure messaging app: A guide for beginners

Also available in Spanish.

Alex Albert on Twitter / X

We just published a near-term development roadmap for the model context protocol (MCP)Some highlights:- Remote support (and auth!)- Reference implementations- Better package management- Agent support pic.twitter.com/SflJi1RapH— Alex Albert (@alexalbert__) January 2, 2025

Bluvy Messenger

La messagerie privée construite sur Bluesky. Chiffrement de bout en bout MLS, vos clés, votre contrôle. Gratuit sur Web, Android et iOS.

MessagePort - Web APIs | MDN

The MessagePort interface of the Channel Messaging API represents one of the two ports of a MessageChannel, allowing messages to be sent from one port and listening out for them arriving at the other.