ElGamal暗号を用いた制御器の暗号化

抄録

This study proposes how to encrypt controllers using ElGamal encryption system. Based on a homomorphism of the ElGamal encryption, the proposed method enables to conceal not only signals over communication links in the control systems, but also parameters of controllers used in calculating a control input. A numerical example confirms that the proposed method correctly works for the cyber-security enhancement.