Electrical and Electronic Engineering - Research Publications

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Start date: 2011 × Author: Farokhi, Farhad × Author: Nesic, Dragan × Author: Lin, Yankai × Type: Conference Paper ×

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    Secure Control of Nonlinear Systems Using Semi-Homomorphic Encryption
    Lin, Y ; Farokhi, F ; Shames, I ; Nesic, D (IEEE, 2018-01-01)
    A secure nonlinear networked control system (NCS) design using semi-homomorphic encryption, namely, Paillier encryption is studied. Under certain assumptions, control signal computation using encrypted signal directly is allowed by semi-homomorphic encryption. Thus, the security of the NCSs is further enhanced by concealing information on the controller side. However, additional technical difficulties in the design and analysis of NCSs are induced compared to standard NCSs. In this paper, the stabilization of a nonlinear discrete time NCS is considered. More specifically, sufficient conditions on the encryption parameters that guarantee stability of the NCS are provided, and a trade-off between the encryption parameters and the ultimate bound of the state is shown.