A Decomposed Encryption-Decryption Scheme for Deception Attack Detection and Privacy-Preserving

This paper deals with the deception attack detection and privacy-preserving problem for the multi-agent systems with malicious attacks. First, a decomposed encryption-decryption scheme based on the cryptographic technique and state-decomposition idea is proposed, with the purpose of detecting the deception attacks and achieving full process privacy-preserving. Via the proposed scheme, the decomposed substate transmitted in the communication links is encrypted and decrypted by the dynamic keys. Since the attacker cannot tamper with the attached digital signature, the detector is capable of detecting the multiple types of deception attacks. Then, for different attackers, the detection and privacy protection performance are discussed, respectively. Finally, the effectiveness and superiority of this scheme are verified through simulation experiments.