Fork-resilient continuous group key agreement
J Alwen, M Mularczyk, Y Tselekounis - Annual International Cryptology …, 2023 - Springer
Abstract Continuous Group Key Agreement (CGKA) lets an evolving group of clients agree
on a sequence of group keys. An important application of CGKA is scalable end-to-end …
on a sequence of group keys. An important application of CGKA is scalable end-to-end …
On the insider security of MLS
J Alwen, D Jost, M Mularczyk - Annual International Cryptology …, 2022 - Springer
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 …
(E2E) secure group messaging being developed by the IETF, poised for deployment to …
WhatsUpp with sender keys? Analysis, improvements and security proofs
Developing end-to-end encrypted instant messaging solutions for group conversations is an
ongoing challenge that has garnered significant attention from practitioners and the …
ongoing challenge that has garnered significant attention from practitioners and the …
Interoperability in end-to-end encrypted messaging
Abstract The Digital Markets Act (DMA) is a nascent European Union regulation adopted in
May 2022. One of its most controversial provisions is a requirement that so-called …
May 2022. One of its most controversial provisions is a requirement that so-called …
Quarantined-TreeKEM: a Continuous Group Key Agreement for MLS, Secure in Presence of Inactive Users
C Chevalier, G Lebrun, A Martinelli… - Proceedings of the 2024 …, 2024 - dl.acm.org
The recently standardized secure group messaging protocol Messaging Layer Security
(MLS) is designed to ensure asynchronous communications within large groups, with an …
(MLS) is designed to ensure asynchronous communications within large groups, with an …
The key lattice framework for concurrent group messaging
Today, two-party secure messaging is well-understood and widely adopted, eg, Signal and
WhatsApp. Multiparty protocols for secure group messaging are less mature and many …
WhatsApp. Multiparty protocols for secure group messaging are less mature and many …
On the cost of post-compromise security in concurrent continuous group-key agreement
Abstract Continuous Group-Key Agreement (CGKA) allows a group of users to maintain a
shared key. It is the fundamental cryptographic primitive underlying group messaging …
shared key. It is the fundamental cryptographic primitive underlying group messaging …
DeCAF: Decentralizable CGKA with Fast Healing
J Alwen, B Auerbach, M Cueto Noval, K Klein… - … Conference on Security …, 2024 - Springer
Continuous group key agreement (CGKA) allows a group of users to maintain a
continuously updated shared key in an asynchronous setting where parties only come …
continuously updated shared key in an asynchronous setting where parties only come …
Attribute-Based Authentication in Secure Group Messaging for Distributed Environments
Messaging Layer security (MLS) and its underlying Continuous Group Key Agreement
(CGKA) protocol allows a group of users to share a cryptographic secret in a dynamic …
(CGKA) protocol allows a group of users to share a cryptographic secret in a dynamic …
On the efficiency and security of secure group messaging
G Pascual Perez - 2024 - research-explorer.ista.ac.at
Instant messaging applications like Whatsapp, Signal or Telegram have become ubiquitous
in today's society. Many of them provide not only end-to-end encryption, but also security …
in today's society. Many of them provide not only end-to-end encryption, but also security …