A Sustained Authentication Approach For Wi-Fi Communication Based On Concurrent Bluetooth

In recent years,with the rapid development of mobile internet,Wi-Fi network because of its wide range of transmission,low latency and other characteristics,has become the preferred networking of wireless devices.However,due to the characteristics of portability and mobility,portable devices are vulnerable to hijacking,copying,monitoring and other risks,the authentication technologies of the terminal devices with the user as the main body become the key to the construction of the secure Wi-Fi network.Among them,the authentication technology based on human behavior,physiological characteristics overcomes the risk of security authentication code generation,storage and verification.The authentication based on wearable devices has become a more practical and secure way.Based on the above background,we proposed a identity authentication program of direct communication between Bluetooth and Wi-Fi.First,we solved the problem of direct communication between Bluetooth and Wi-Fi.Bluetooth and Wi-Fi work in the same physical frequency bands,so,we designed the modulation of Bluetooth side based on the interference of the Bluetooth signal with the Wi-Fi signal.It is composed of DAFSK(discrete amplitude shift keying)and symbol mapping;Wi-Fi decodes the Bluetooth information embedded in Wi-Fi packets using the Bluetooth signal interfering with CSI(channel status information).It also includes two steps,namely the design of CSI extractor and the design of decoder.Through the modulation of Bluetooth side and the demodulation of Wi-Fi side,we solved the direct communication problem between Bluetooth and Wi-Fi without taking additional bandwidth.It laid the foundation for the next biometrics certification based on wearable devices.Second,we have designed the security authentication steps in detail according to the characteristics of the Bluetooth frequency hopping communication.In this framework,based on concurrent communication between Bluetooth and Wi-Fi,we sliced the frequency hopping sequence and identity code,and designed a novel information transfer mechanism.Finally,by decoding the authentication information,we achieve the purpose of security certification.At the end of this article,we demonstrated the feasibility and communication performance of direct communication between Bluetooth and Wi-Fi through experiments in a variety of environments.And we analyzed the bit error rate and transmission rate of direct communication in a variety of situations.We also conducted a detailed security analysis of the proposed new biometric authentication program.Through the analysis,we conclude that this new biometric authentication scheme has high security and can meet the requirements.