Towards secure time-triggered systems

This paper presents the development of a novel joint safety and security architecture for dependable embedded time-triggered systems. While fault-tolerance properties of time-triggered protocols have been very well studied, research on security aspects for time-triggered systems have hardly been covered. Therefore, we explore system design principles which efficiently realize security mechanisms for time-triggered architectures. A particular focus is on synergistic effects of security and safety-related functions, thereby supporting the roll-out of safety-critical embedded systems even in 'untrusted' environments. As a main contribution, we present the Secure COmmunication in Time-Triggered sYstems (SCOTTY) approach to build secure time-triggered systems.