An aggregated trust evaluation method for message reliability in vanets

摘要

#$%^&*AU2018308958A120200430.pdf#####ABSTRACT In the present invention, an aggregated trust evaluation method for message reliability in VANETs is disclosed. In the proposed method, the trust authority is responsible for maintaining the trust information of vehicles. Vehicles regularly request their latest trust certificates from the trust authority. Message senders send messages with the latest trust certificates to prove their own trustworthiness. After receiving each message, the message receiver extracts the trust certificate and comprehensively considers the messages from multiple message senders to decide whether they are reliable, then generates a trust feedback for each message sender according to the quality of message and sends it to the trust authority, which then updates the local storage. This invention efficiently aggregates two kinds of trust evaluation, and does not require message receivers to request the trust authority in real time, so the evaluation is more accurate and the evaluation speed is faster. This invention is compatible with the situation that vehicles cannot connect to the trust authority in a short period, thus it is more suitable for the high dynamic characteristics in VENETs.