Keep the Dirt: Tainted TreeKEM, Adaptively and Actively Secure Continuous Group Key AgreementContinuous Group Key Agreement • September 26th, 2013
This work focuses on improving the efficiency of existing Continuous Group Key Agreement (CGKA) protocols, underlying efficient secure group messaging. In particular, it builds on TreeKEM, the proto- col by the IETF working group on Message Layer Security (MLS). We formalize and analyze a modification named Tainted TreeKEM (TTKEM).