EPRU: Efficient and Privacy-Aware Reputation Update Scheme With a Dual-Threshold Mechanism for Vehicular Platoons

This paper presents EPRU, a reputation-based authentication system designed to help vehicles in platoons (groups of cars traveling together) communicate securely and trustworthily. Unlike existing systems that only verify message integrity, EPRU also evaluates whether the content of messages is credible by tracking vehicle behavior in real time, using encryption (mathematical techniques that scramble data) to protect vehicle identities and feedback data.