Research And Design Of Bluetooth Access Control System Based On Android Improved Hybrid Encryption Algorithm

Access control system is an important part of the security system,it is an effective solution to the import an export safety issues important measures.With the rapid development of science and technology today,people's living standards have been greatly improved,and the safety of living and working environment has also been higher.The traditional way of access control can no longer meet people's smart and convenient requirements for access control system.Faced with the ever-increasing development of computer network technology and high penetration rate of Android mobile intelligent terminal,it is of great significance to research and design a more secure and convenient intelligent access control system based on Android mobile terminal.In this paper,the low-power Bluetooth technology,Android system and other related technologies are analyzed and researched first,And based on the analysis of the demand of access control system,put forward the overall design of access control system.Aiming at the security of data transmission in access control system,the AES encryption algorithm is studied and analyzed,and the security of S-box and the key expansion algorithm are improved in order to improve the security of the algorithm.Aiming at the inconvenience of key management in AES algorithm,ECC encryption algorithm is adopted to manage its key.The two algorithms are combined to complement each other to ensure the security of user's information.Finally,design a low-power Bluetooth access control system based on improved hybrid encryption algorithm.The system consists of three parts: access control unit,Android client and central controller.In the entrance control unit,choose STM32 microprocessor as the master chip,choose CC2540 Low Power Bluetooth chip to realize the Bluetooth communication with Android device,and describe the key problems in the design.At the same time,also designed the underlying driver,focusing on the design of the underlying Bluetooth chip driver and serial communication program.In the Android client,the BLE device communication software is designed,the data storage and encryption are designed,and then the Bluetooth wireless opening of the Android device is realized.In the part of the central controller,the database design is completed for the storage of data,and the data is decrypted and authenticated,so as to realize the integrated control and control function of the central controller.Finally,setting up the experimental environment,the system designed to verify the test,including function testing and performance testing.The results of the test show that the low power Bluetooth access control system based on the improved hybrid encryption algorithm can effectively manage and control the access control system,and the improved hybrid encryption algorithm can improve the security of thesystem without affecting the real-time performance of the system.