Implementing homomorphic encryption based secure feedback control

Tran, Julian; Farokhi, Farhad; Cantoni, Michael; Shames, Iman

doi:10.1016/j.conengprac.2020.104350

Cited by 29 publications

(15 citation statements)

References 56 publications

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“…It finds proper encryption operators or algorithms, which guarantees the homomorphic nature between the data before and after the encryption operation. Farokhi et al [29], [30] and Tran et al [31] considered such problems. Ni et al [32] proposed a novel privacy scheme for distributed estimation based on the technique of homomorphic encryption.…”

Section: A Related Studiesmentioning

confidence: 99%

Privacy Preservation by Local Design in Cooperative Networked Control Systems

Liu¹,

Ye²,

Shi³

2022

Preprint

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In this paper, we study the privacy preservation problem in a cooperative networked control system working for the task of LQG control. The system consists of a user and a server: the user owns the state process, the server provides computation capability, and the user employs the server to compute control inputs for it. To enable the server's computation, the user needs to provide the measurements of the process states to the server. However, the user regards the states as privacy and wants the server to have deviated knowledge of the state estimates rather than the true value. Regarding that, we propose a novel local design of privacy preservation, which creates a deviation in the server's knowledge of the state estimates from the true value. Meanwhile, we propose an associated privacy metric to measure the deviation and analyze the privacy performance accordingly. Furthermore, we analyze the service loss in the LQG control performance caused by the privacy scheme. Finally, we study the performance trade-off between the privacy preservation and the LQG control, where the proposed optimization problems are solved by numerical methods efficiently.

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Section: A Related Studiesmentioning

confidence: 99%

Privacy Preservation by Local Design in Cooperative Networked Control Systems

Liu¹,

Ye²,

Shi³

2022

Preprint

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“…In the scope of this paper, a custom digital design for encrypted control on an FPGA that makes use of hardware-optimized modular multiplications is proposed in [93].…”

Section: Basics On Homomorphic Encryption Secret Sharing and Multi-pa...mentioning

confidence: 99%

Encrypted Control for Networked Systems: An Illustrative Introduction and Current Challenges

et al. 2021

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“…However, the data shown in Table 1 indicate that a key length of 600 bits may not be suitable for real-time computations. For readers interested in real-time computations, we refer to [41] where FPGA-based systems are used to get 1ms delays for key length of 512 bits and 10ms for key length of 1024 bits . From Fig.…”

Section: An Illustrative Examplementioning

confidence: 99%

Secure Networked Control Systems Design Using Semi-homomorphic Encryption

Lin

Farokhi

Shames

et al. 2021

Lecture Notes in Control and Information Sciences

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A secure and private nonlinear networked control systems (NCSs) design using semi-homomorphic encryption is studied. Static feedback controllers are used and network architectures are provided to enable control signal computation using encrypted signals directly. As a result, the security of the NCSs is further enhanced by preserving the privacy of information flowing through the whole network. Whereas in traditional encryption techniques, encrypted signals are decrypted before control computation and are encrypted again after computation for transmission. While this is highly desirable from privacy point of view, additional technical difficulties in the design and analysis of NCSs are induced compared to standard NCSs. In this paper, we provide sufficient conditions on the encryption parameters that guarantee robust stability of the NCS in the presence of disturbances in a semi-global practical sense, and discuss the trade-offs between the required computational resources, security guarantees and the closed-loop performance. The proof technique is based on Lyapunov methods.

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Implementing homomorphic encryption based secure feedback control

Cited by 29 publications

References 56 publications

Privacy Preservation by Local Design in Cooperative Networked Control Systems

Privacy Preservation by Local Design in Cooperative Networked Control Systems

Encrypted Control for Networked Systems: An Illustrative Introduction and Current Challenges

Secure Networked Control Systems Design Using Semi-homomorphic Encryption

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