Optimal Controller and Security Parameter for Encrypted Control Systems Under Least Squares Identification. (arXiv:2302.12154v1 [eess.SY])

Encrypted control is a framework for the secure outsourcing of controller
computation using homomorphic encryption that allows to perform arithmetic
operations on encrypted data without decryption. In a previous study, the
security level of encrypted control systems was quantified based on the
difficulty and computation time of system identification. This study
investigates an optimal design of encrypted control systems when facing an
attack attempting to estimate a system parameter by the least squares method
from the perspective of the security …

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