Abstract
Abstract-The Online Electric Vehicle (OLEV) concept is introduced by Korea Advanced Institute of Science and Technology (KAIST) in South Korea. In OLEV system, an electric vehicle (EV) picks up electric energy remotely from power transmitters (PTs) which are buried under a certain route using its pick-up device while the EV is running. The OLEV uses wireless power transfer (WPT) technology which has been widely adopted to charge the batteries of EVs. However, there is not any billing systems for OLEV up to now. In this paper, we propose a secure and privacy-preserving billing scheme for OLEV. Users can buy electric energy from power supply company and charge their EVs anonymously and unlinkably. We assume that each PT transmits a fixed amount of energy to the EV and the energy supply company bills the EV a same amount of money for the electric energy from every PT. EVs can buy the energy according to the levels of their batteries.
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