Multi-Authority Attribute-Based Searchable Encryption With Attribute Revocation for Internet of Vehicles

The Internet of Vehicles (IoV) is a critical solution for reducing urban roadway congestion and ensuring the safety of pedestrians, passengers, and vehicles. Autonomous vehicle platoon is an effective way to improve traffic capacity and driving experience. In publicly accessible IoV environments, data transmission between roadside units and platoon leaders (PLs) in autonomous vehicle platoons is highly vulnerable to eavesdropping, tampering, and other attacks. Similarly, data transmission between PLs and platoon members (PMs) is also at risk from malicious vehicles. To this end, we suggest the implementation of multi-authority attribute-based searchable encryption with attribute revocation (MA-ABSE-AR) for IoV. Fine-grained access control is carried out by MA-ABSE-AR, which also allows PMs to search for specific information provided by the PL via keywords. In addition, MA-ABSE-AR can instantly revoke the attribute of the departing vehicle without affecting other vehicles. The MA-ABSE-AR scheme accomplishes indistinguishability under chosen plaintext attacks and indistinguishability under chosen keyword attacks. According to the experimental findings, the MA-ABSE-AR scheme offers advantages with regard to search and decryption, and is suitable for autonomous vehicle platoon and other IoV scenarios.