Design of remote security control system based on 4G

With the rise of the concept of "smart earth", the new generation of information technology has changed the way information interacts. The combination of things, intelligence and interconnection has made people's daily life more convenient. However, while enjoying convenience, information security has become a bottleneck restricting comprehensive interconnection. A variety of devices can be remotely controlled through public networks and sensor networks, but a large number of facts show that in an open network environment, information is easily stolen and tampered, and the resulting security problems are becoming more serious. The 4G (the 4 Generation mobile communication technology) remote security control system implemented in this paper consists of a main controller, a cloud server and an Android client. The information of the main controller and the client is encrypted by the national secret algorithms SM2 and SM4, the information exchange is performed by the cloud server, and the main controller establishes a connection with the terminal device through the short-range wireless network. Compared with the remote control system that usually uses international algorithms, this system has advantages in terms of ensuring the security and control on the basis of satisfying convenience and intelligence.