A Lattice-Based Ring Signature Scheme to Secure Automated Valet Parking.

Automated Valet Parking (AVP) systems have great potential to mitigate parking pressure. The core of AVP is parking space reservation which users send relevant information to parking lot providers to complete the parking reservation and automatic parking. However, that reveals the drivers’ identity information and the reservation messages might be forged. In addition, with quantum computers developing rapidly, existing systems also suffer from privacy and security issues under quantum attacks. These become the major obstacles to the development of the AVP system. To deal with the above challenges, our paper proposes a lattice-based ring signature scheme for autonomous vehicles which is the first AVP privacy preservation system capable of resisting quantum attacks. More significantly, our system applies lattice-based ring signatures to ensure the correctness, anonymity and unforgeability of messages. Finally, security analyses are conducted to compare our system with others in terms of security and privacy, and also the efficiency analysis shows that the performance of our system is superior to others.