A Secure and Efficient Authentication Protocol Based on Identity Based Aggregate Signature for Electric Vehicle

This paper proposes a new access authentication protocol for electric vehicle in a secure and efficient way. The proposed protocol employs identity based aggregate signatures to achieve access authentication. It has the characteristics of local signals, identity based, etc. For security, the new protocol can support mutual authentication, message integrity and replay attack resistance. For efficiency, the proposed scheme wins high performance due to no involved pairing operations. In particular, a batch verification mechanism is designed to reduce AP´s burden, which can greatly enhance the protocol efficiency. The security analysis and the simulating results show that the proposed protocol can provide secure and efficient service for electric vehicle.