Experimental Examination of Secure Two-Party Controller Computation

TL;DR

This paper experimentally evaluates a secure two-party computation protocol for dynamic controllers, demonstrating its real-time feasibility and stability in a cloud-based inverted pendulum setup.

Contribution

It provides the first practical implementation of a secure two-party controller computation protocol for real-time control systems.

Findings

Protocol successfully stabilized the inverted pendulum.

Experimental results confirm real-time feasibility despite communication overhead.

Demonstrates practical deployment on a commercial cloud platform.

Abstract

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.