Abstract Intelligent Transportation System (ITS) aims to provide innovative services in the field of road transport and traffic management. This field includes infrastructure, vehicles and users, and interfaces with other modes of transport. Vehicles are capable of exchanging information by radio to improve road safety or allow internet access for passengers. Road safety messages exchanged between vehicles may be falsified or eliminated by malicious entities to cause accidents and endanger people life. The main concern arises how to maintain only the trustworthy participants and revoke the misbehaving ones. In this paper, we propose a new framework for the certificate revocation process within ITS. This process can be activated by Misbehavior Detection Systems (MDSs) running within vehicles and the Misbehavior Authority (MA) within the infrastructure. These MDSs rely on the trust evaluation for participating vehicles updated continuously based on their behaviors. Therefore, the revocation is done periodically through geographical Certificate Revocation List (CRL) which specifies the certificates of all revoked vehicles within a specific area. This results in a lightweight solution for CRL management and distribution within a modular and secure Public Key Infrastructure (PKI), based on group formation and trust evaluation. Simulations were carried out showing the advantages of the proposed revocation framework.


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    METHOD AND SYSTEM FOR INTELLIGENT TRANSPORTATION SYSTEM CERTIFICATE REVOCATION LIST REDUCTION

    RUSSELL NICHOLAS JAMES / BROOKFIELD JONATHON / BARRETT STEPHEN JOHN | European Patent Office | 2020

    Free access

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