Comparison and performance analysis of dynamic encrypted control approaches
Systems and Control
2025-10-21 v1 Cryptography and Security
Systems and Control
Optimization and Control
Abstract
Encrypted controllers using homomorphic encryption have proven to guarantee the privacy of measurement and control signals, as well as system and controller parameters, while regulating the system as intended. However, encrypting dynamic controllers has remained a challenge due to growing noise and overflow issues in the encoding. In this paper, we review recent approaches to dynamic encrypted control, such as bootstrapping, periodic resets of the controller state, integer reformulations, and FIR controllers, and equip them with a stability and performance analysis to evaluate their suitability. We complement the analysis with a numerical performance comparison on a benchmark system.
Cite
@article{arxiv.2510.17333,
title = {Comparison and performance analysis of dynamic encrypted control approaches},
author = {Sebastian Schlor and Frank Allgöwer},
journal= {arXiv preprint arXiv:2510.17333},
year = {2025}
}