Node-Oriented Secure Data Transmission Algorithm Based on IoT System in Social Networks

With the rapid development of information technology, the global network is already in a relatively open environment. In this open environment, mobile devices in the Internet of Things(IoT) system often act as nodes in a social network. However, because the secure transmission of the node's data cannot be ensured, it is extremely vulnerable to attacks by malicious nodes, which further leads to more energy consumption. Aiming at these problems, this letter proposes a node-oriented secure data transmission algorithm (NOSDT) based on the Internet of Things system in the social network. The algorithm detects the true nature of the node, analyzes the behavior of the malicious node, and gives a safe data transmission method. It can not only prevent relaying with malicious nodes, but also select reliable nodes for secure data transmission. Simulation experiments show that the algorithm can improve the security and delivery ratio of data transmission.