The Messaging Layer Security (MLS) project is an IETF effort aiming to establish an industry-
wide standard for secure group messaging (SGM). Its development is supported by several …

Secure messaging (SM) protocols allow users to communicate securely over untrusted
infrastructure. In contrast to most other secure communication protocols (such as TLS, SSH …

Abstract The Messaging Layer Security (MLS) protocol is an open standard for end-to-end
(E2E) secure group messaging being developed by the IETF, poised for deployment to …

Messaging Layer Security (MLS), currently undergoing standardization at the IETF, is an
asynchronous group messaging protocol that aims to be efficient for large dynamic groups …

Secure group messaging protocols, providing end-to-end encryption for group
communication, need to handle mobile devices frequently being offline, group members …

A continuous group key agreement (CGKA) protocol allows a long-lived group of parties to
agree on a continuous stream of fresh secret key material. CGKA protocols allow parties to …

In the past few years secure messaging has become mainstream, with over a billion active
users of end-to-end encryption protocols such as Signal. The Signal Protocol provides a …

Many real-world group messaging systems delegate group administration to the application
level, failing to provide formal guarantees related to group membership. Taking a …

Continuous group key agreements (CGKAs) are a class of protocols that can provide strong
security guarantees to secure group messaging protocols such as Signal and MLS …

While messaging systems with strong security guarantees are widely used in practice,
designing a protocol that scales efficiently to large groups and enjoys similar security …