Information security encryption and privacy protection in V2G mode of electric vehicles

The development of artificial intelligence in the field of electric power has made the Vehicle-to-Grid (V2G) mode one of the important contents, and the security of data transmission and user privacy protection in the V2G mode has the problems of high difficulty and poor performance. For this reason, the research adopts the sharding technology and the coalition chain to solve the conflict of decentralization, security, and scalability of blockchain in V2G mode. At the same time, the consensus efficiency and node incentives are insufficiently avoided according to the timeliness contribution proof. The results show that the effect of sharding technology makes the transaction delay reduced by 98% compared with the traditional blockchain, which is only 500ms. the technology is able to process in parallel and improve the scalability. The scheme can effectively improve the security of data transmission in V2G mode and reduce the risk of information leakage, while maintaining high computational efficiency. This provides information security for the deep integration of electric vehicles and smart grids and promotes the secure application of V2G mode.