An Efficient Conditional Privacy-Preserving Scheme for Smart Parking Sharing

Aiming at the problem of privacy protection of drivers and parking owners in the smart parking sharing scheme, an efficient conditional privacy-preserving scheme for smart parking sharing is proposed in this paper. Specifically, the scheme uses self-updating dynamic pseudonym to protect the identity privacy of drivers and parking owners, and reduces the cost of drivers and parking owners interacting with trusted authority to obtain temporary public and private keys. In addition, when a dispute arises between a driver and cloud server or between a parking owner and cloud server, a trusted authority can reveal the identity of the driver and parking owner. Security analysis shows that based on DL assumption, the scheme can meet anonymous authentication, data confidentiality and traceability. The performance evaluation reflects that the proposed scheme is efficient and practical.