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arXiv 2302.12154eess.SYcs.CRcs.SY
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最小二乘辨识下加密控制系统的最优控制器与安全参数

Optimal Controller and Security Parameter for Encrypted Control Systems Under Least Squares Identification

Kaoru Teranishi, Kiminao Kogiso

AI总结:

针对攻击者利用最小二乘法估计系统参数的威胁,提出使估计难度最大化的最优$H_2$控制器及最小安全参数方程,在保证安全级别的同时降低计算成本并实现系统化设计。

摘要:

加密控制是一种利用同态加密安全外包控制器计算的框架,允许在不解密的情况下对加密数据执行算术运算。在先前的研究中,加密控制系统的安全级别基于系统辨识的难度和计算时间进行了量化。本研究从安全级别的角度,探讨了面临试图通过最小二乘法估计系统参数的攻击时,加密控制系统的最优设计。本研究提出了使估计难度最大化的最优$H_2$控制器,以及确定保证加密控制系统安全性的最小安全参数的方程,作为该设计问题的解决方案。所提出的控制器和安全参数有利于在达到期望安全级别的同时,降低加密控制系统的计算成本。此外,所提出的设计方法实现了加密控制系统的系统化设计。

英文摘要:

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 level. This study proposes an optimal $H_2$ controller that maximizes the difficulty of estimation and an equation to determine the minimum security parameter that guarantee the security of an encrypted control system as a solution to the design problem. The proposed controller and security parameter are beneficial for reducing the computation costs of an encrypted control system, while achieving the desired security level. Furthermore, the proposed design method enables the systematic design of encrypted control systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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