Blockchain-based data sharing scheme for Internet of Vehicles

Internet of Vehicles (IoV) can effectively utilize vehicle dynamic information in the network system, provide vehicles services, and make traffic smoother. For the data sharing problem between different cryptosystems in IoV, an efficient and secure blockchain-based data sharing scheme for the IoV is proposed. Heterogeneous aggregated signcryption technology is used to realize secure communication between certificateless cryptography (CLC) and public key infrastructure (PKI). The outsourced computing operation of smart contracts based on blockchain greatly reduces the computing overhead of roadside units and on-board units, while improving the security of data sharing in the IoV. Furthermore, the analysis results show that the proposed scheme can guarantee the confidentiality and integrity of IoV data sharing and has high computational efficiency.