Encrypted control for networked systems -- An illustrative introduction and current challenges

TL;DR

This paper introduces encrypted control for networked systems, highlighting its importance in securing sensitive data in cloud-based control environments amidst growing cyber threats.

Contribution

It provides an illustrative tutorial overview of encrypted control, outlining current challenges and the significance of data confidentiality in networked control systems.

Findings

Encrypted control enhances data security in networked control systems.

It addresses key challenges in implementing secure control in cloud environments.

The paper highlights the importance of confidentiality against cyber threats.

Abstract

Cloud computing and distributed computing are becoming ubiquitous in many modern control systems such as smart grids, building automation, robot swarms or intelligent transportation systems. Compared to "isolated" control systems, the advantages of cloud-based and distributed control systems are, in particular, resource pooling and outsourcing, rapid scalability, and high performance. However, these capabilities do not come without risks. In fact, the involved communication and processing of sensitive data via public networks and on third-party platforms promote, among other cyberthreats, eavesdropping and manipulation of data. Encrypted control addresses this security gap and provides confidentiality of the processed data in the entire control loop. This paper presents a tutorial-style introduction to this young but emerging field in the framework of secure control for networked dynamical systems.