Abstract:The data of the meter is collected by the data collector and data aggregator,which is transmitted to the data storage center.The current method of collecting electricity data has data leakage,man-in-the-middle attacks,and the problem that attackers are not easy to find.To solve this problem,a method called RAHRM is proposed,adopting RSA-AES-HASH authentication.In the authentication process,the information is summarized by the HASH function,and the data transmitted by the smart meter is encrypted,using RSA encryption algorithm.At the same time,traffic monitoring and abnormal alarm on the server.Praide a safe and reliable channel eusuring the need for real-time intelligent data collection of smart meters.The experimental results show that this security protection method can reduce the man-in-the-middle attacks in the process of smart meter communication and solve the problem that attackers are not easy to be discovered.It can ensure the safety of communication lines.