Abstract:

A large number of wireless communication technologies are nowapplied in the Internet of Things field, and the security problems therein are often neglected due to cost and the like. Aiming at the security problems exposed by shortdistance wireless communication technology in IoT devices, this paper takes the smart locks which are widely used in the field of Internet of Things as the research object, and analyzes the short distance wireless communication technology with Bluetooth Low Energy as an example. The application of IoT smart lock security mechanism, using protocol analysis and security model analysis, etc., studied the security vulnerabilities existing in the IoT smart lock. The method of remote attack on IoT smart lock is described by example. Based on CPN model, the resistance of IoT smart lock to illegal replay attacks and eavesdropping attacks is analyzed, and corresponding improvement methods are proposed for security vulnerabilities. The CPN model is used to analyze the reinforced communication model to prove that it can resist the resistance to illegal replay attacks and eavesdropping attacks.

Key words: short distance wireless communication, smart lock, BLE, CPN