Research On Security Authentication Mechanism Of Intelligent Lock

As requirements for secure access control become higher,and scenes are more complicated,intelligent locks are becoming widely used.In this paper,two applications which are characterized by low power consumption and inconvenient connection: wireless access and intelligent public bike lock are studied and two mechanisms of fusing NFC and fingerprint recognition are designed,realizing convenient,fast and secure access control.This paper firstly analyzes the protocol stack of NFC,and finds out the risk of eavesdropping because of plaintext transmission.Then,a general scenario model is built for intelligent lock,and the potential threats and the corresponding countermeasures are analyzed.For access control system,a safety control mechanism utilizes traditional cryptography algorithm is designed,and CPN modeling analysis on the illegal access and eavesdropping is performed.For shared-bike system,an ultra-lightweight security mechanism is designed,and the security is also analyzed by CPN modeling.Both the mechanisms achieve one-time pad design.On the basis of ensuring security,the use of NFC and fingerprint identification ensures convenience.Finally,the prototype system is carried out.The results show that the mechanisms designed in this paper operate robustly and have good prospects.The proposed mechanisms can resist replay attack and wiretap attack and guarantee channel isolation.