A Secure Identity Authentication Method for Electric Vehicle TCU

This paper analyzes the necessity of safe communication between the billing control unit in the Charging piles intelligent charging system as an important device of the Charging piles and the internet of vehicles platform, charging controller, mobile phone APP and electric vehicle charging card. This method focus on studying the secure data exchange between TCU and security gateway through SSL VPN at the link layer, ensuring the security of the link communication between TCU and security gateway. The security authentication method based on digital certificate is adopted between TCU and the internet of vehicles platform, and the national secret symmetric encryption algorithm is adopted for the transmission of uplink and downlink data, which effectively realizes the confidentiality and integrity of security business data transmission.