OUT-OF-BAND MECHANISMS TO ENHANCE SECURITY OF MESSAGING LAYER SECURITY (MLS) PROTOCOL-BASED COMMUNICATIONS

Abstract

Presented herein is a Message Layer Security (MLS)-based secure channel communication arrangement that involves a minimal set of changes to the MLS standard to reduce the redundant overhead in case of two-party (one-to-one or 1:1) communication. These techniques reduce the communication and computation complexity of both devices involved in establishing and supporting the one-to-one secure channel communication. Methods are provided to establish a one-to-one secure channel between a first endpoint and a second endpoint by performing a one-to-one secure channel handshake. Further, methods are provided to incorporate at least one shared secret into the cryptographic state of the one-to-one secure channel via at least one of the one-to-one secure channel handshake or a key update process.

CPC Classifications