Experimental Examination of Secure Two-Party Controller Computation
For control systems requiring long-term security, this work shows that secure two-party controller computation is practically feasible on commercial cloud platforms.
The paper demonstrates the feasibility of a secure two-party computation protocol for dynamic controllers on a cloud platform, successfully stabilizing an inverted pendulum despite online communication overhead.
A secure two-party computation protocol for running dynamic controllers over secret sharing has recently been proposed. Unlike encrypted control schemes based on homomorphic encryption, this protocol enables operating dynamic controllers for an infinite time horizon without controller-state decryption, controller-state reset, or input re-encryption. However, the two-party setting introduces additional online communication between the computing parties, which may hinder real-time feasibility. In this study, we demonstrate the feasibility of the protocol through implementation on a commercial cloud platform with an inverted pendulum testbed. Experimental results show that the proposed protocol successfully stabilized the pendulum despite the online communication overhead.