The Research Of Key Technology On Data Privacy-Perserving In Wearable Device

Wearable equipment is a portable device which is directly on the body or integrated into the user's clothes or accessories.Wearable equipment combined with hardware,sensors,networks and background servers together composes the Internet of things environment,which provides users with family care,environmental health,family management and other services.With the popularity of wearable equipment,the real-time collection of massive data is a weak link of personal privacy disclosure,which poses a serious threat to the user property and life safety,so it is urgent to protect the data of wearable devices.Based on the analysis of the current mainstream privacy protection algorithm and communication security protocol,meanwhile combined with the portable and intelligent features of wearable equipment,an architecture is proposed in this thesis which accomplishes data security transmission and privacy protection and solves the problem of privacy protection of trajectory data.The algorithm is based on the structure of the central server.The method of the safe area instead of K value combined with L-diversity is used to get anonymous user set which enhances the security of the trajectory privacy data in the transmission process,reduces the similarity of the track privacy data,and improves the service quality.Furthermore,the algorithm decreases the possibility that the anonymous server and the database server are attacked.According to the above architecture and the background of caring the health of the elderly,a system with the function of privacy protection to prevent the old from wandering away is designed.The security architecture of the system is a typical Internet of Things technology.The perception layer of the system uses ARM embedded technology,which joined the equipment binding function to guarantee one to one location service to ensure the safety of users' privacy data.The network layer of the system uses the scheme based on Hyper Text Transfer Protocol that ensures the communication process of data transmission security,dependability and anti-defamation,the application layer of the system adopts privacy preserving trajectory algorithm to protect the users' privacy of position data further.The system is composed of a monitoring platform module,a wearable device module carried by the person under guardianship and a hand-held terminal module of the guardian.Finally,this thesis addressed the integrated test and analyzed the safety of every level of the architecture.The result shows that the system meets the goal of the design which can not only provide the function of accurate location query,track management,monitoring and alarming,but also protect the data privacy of the old which meets the needs of practical applications and has a very important social and economic benefits.