A Secure and Anonymous Communicate Scheme over the Internet of Things

Anonymous exchange of data has a strong demand in many scenarios. With the development of IoT and wireless networks, plenty of smart devices are interconnected through wireless technologies such as 5G and Wi-Fi, making it possible to use them for information exchanging. The authors find a P2P network model for secure and anonymous communication, which is a typical Crowds system and the operating mechanism meets the characteristics of limited-resources of IoT devices. Based on this network model, the authors design a lightweight communication scheme for the remote-control system in this work, using two kinds of Virtual-Spaces to achieve the purpose of identity announced and data exchanged. The authors implemented a prototype system of the scheme and tested it over the Freenet, proving that the scheme can effectively resist the impact of flow analysis on the anonymity of communication while ensuring communication data security. By analyzing the scheme's performance, the author believes that the scheme is practical and is suitable for scenarios that are not time-sensitive but require high anonymity.