Purposes—To provide efficient authentication and privacy protection for communication between vehicles and roadside units in the internet of vehicles(IoV),and improve the verification effi-ciency of aggregated signatures when the verification process of aggregate signature does not lead to the failure of all the aggregated signatures due to the existence of individual invalid signatures.Meth-ods—In the article,the certificateless cryptography is combined with the aggregate signature scheme to design a certificateless aggregate signature scheme applied in IoV.The scheme adopts the pseudo-nym which can be updated in real time to provide privacy protection for vehicles.Result—The scheme provide the vehicles with the privacy protection by using the live updated false identity,and under the random oracle model,its unforgeability has been proved on the strength of elliptic curve discrete log-arithm problem.Conclusion—The analysis shows the proposed scheme has higher efficiency and better performance compared with similar schemes.
certificate less cryptographyfault-tolerant aggregate signatureinternet of vehiclesprivacy protection
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