Matrix, the open protocol for secure decentralised communications
Sharing a safety tool: announcing policyserv
Matrix, the open protocol for secure decentralised communications
Introducing Matrix Widgets - including Jitsi video conferencing!
Matrix, the open protocol for secure decentralised communications
Solidarity Social operates a Bluesky PDS and uses Matrix for private DMs
Matrix, the open protocol for secure decentralised communications
Welcoming Discord users amidst the challenge of Age Verification
Matrix, the open protocol for secure decentralised communications
FR#163 – Decrypting Matrix
On the convergence towards private data on social networking protocols, and the connection to Matrix
Matrix - Decentralised and secure communication
You're invited to talk on Matrix. If you don't already have a client this link will help you pick one, and join the conversation. If you already have one, this link will help you join the conversation
Matrix - Decentralised and secure communication
You're invited to talk on Matrix. If you don't already have a client this link will help you pick one, and join the conversation. If you already have one, this link will help you join the conversation
Room to grow: Building collaborative, open software
We examine one approach to collaborative, open software by building on Matrix, a secure, decentralised, real-time communication protocol with generic database capabilities hiding beneath its current focus on chat.
BeeKEM: Decentralized, Secure and Efficient Group Key Agreement
Group key agreement protocols are essential for modern secure messaging. Most existing group key agreement protocols assume a centralized model with a semi-trusted service that mediates the communication. This is efficient, but problematic for some important applications, since a central service can be a choke point for surveillance and censorship. There is a nascent literature on decentralized group key agreement that avoids such reliance, but existing proposals either do not scale, with update costs linear or quadratic in the group size, or lack proofs of security. Centralized protocols can offer much lower (logarithmic) cost. We present BeeKEM, the first decentralized group key agreement protocol with logarithmic update cost in the common case (degrading to linear in the worst case) and proofs of security. We provide an open-source implementation and demonstrate that it is competitive with OpenMLS. BeeKEM opens the door for a range of communication and collaboration applications offering not only end-to-end encryption, but also metadata privacy and censorship resistance.
Decentralization Trade Offs in AT Protocol and ActivityPub DWeb Camp 2026
Christine Lemmer Webber is lead author and co-editor of the W3C ActivityPub specification. Daniel Holmgren is Head of Protocol at Bluesky, working on the AT Protocol specification at the IETF. Join us for a discussion on decentralization trade-offs and other design decisions in the two protocols, and what that means for different architectures, structures, and even future points of convergence. Moderated by Boris Mann
attested.network — Proof of Payment for ATProtocol
An open specification for decentralized, cryptographically verifiable proof of payments.
Key Agreement for Decentralized Secure Group Messaging with Strong Security Guarantees
Secure group messaging protocols, providing end-to-end encryption for group communication, need to handle mobile devices frequently being offline, group members being added or removed, and the possibility of device compromises during long-lived chat sessions. Existing work targets a centralized network model in which all messages are routed through a single server, which is trusted to provide a consistent total order on updates to the group state. In this paper we adapt secure group messaging for decentralized networks that have no central authority. Servers may still optionally be used, but they are trusted less. We define decentralized continuous group key agreement (DCGKA), a new cryptographic primitive encompassing the core of a decentralized secure group messaging protocol; we give a practical construction of a DCGKA protocol and prove its security; and we describe how to construct a full messaging protocol from DCGKA. In the face of device compromise our protocol achieves forward secrecy and post-compromise security. We evaluate the performance of a prototype implementation, and demonstrate that our protocol has practical efficiency.
Self-hosting a Matrix server for 5 years
Experiences with the Matrix protocol, Matrix Synapse server, bridges, and Element mobile apps.
Decrypting Matrix – Where Do Rooms Go?
Matrix has been running private rooms on open protocols for a decade, and they ended up inside European governments. This piece is about why happened, and why it does not have to be the result of the various projects for private data and rooms on the open social web too.
Home - Beckn
Beckn enables the creation of open, peer-to-peer decentralized networks for pan-sector economic transactions.The protocol can be