Research And Implementation Of Mobile Terminal Sensitive Information Protection Technology Based On Android

With the development of the mobile terminal into the era of intelligent,its performance has been greatly improved,also its function is increasingly rich and colorful.Users will stored a lot of important sensitive information and privacy data on the mobile intelligent terminal.Once the information and data is leaked,it will directly affect the user's economic interests,so the security of these data is particularly important.In this paper,we have studied the method of anti-leakage of sensitive information,designed and implemented a full range of security protection system to protect sensitive information.The project's design includes privacy space module which used to encrypt the source of sensitive information,malicious behavior detection module,the software lock module based on access control and the anti-theft module to control the sensitive information when you lose the terminal.The main contents and innovations of this paper are as follows:(1)A sensitive information security model based on hierarchical architecture is proposed.The security of sensitive information is protected by the design of data layer,system interaction layer,application layer and function layer.The data layer guarantees the security of sensitive information,and the interaction layer of the system control the terminal visitor's operate.The application layer provides the interface for the realization of the function layer.(2)Designed the sensitive information encryption module Based on research of encryption,storage and extraction method of image,video,file and SMS in Android mobile intelligent terminal.Encrypt the sensitive information on the terminal based on the AES algorithm to ensure the safety of this information.(3)A software lock scheme based on the application of the black and white list is proposed,after research on access control mechanism of Android mobile intelligent terminal.By setting up the blacklist,lock the software which carry a personal sensitive information;through a temporary set of white list,to ensure the normal use of locked software by the legitimate users.(4)Designed intelligent anti-theft module after research on the way of sensitive information disclosure and Android's Broadcast mechanism.By monitoring the status of the SIM card and acquiring the terminal position information,it can provide the information for retrieve the terminal.We can erase the terminal sensitive information by this module,so that the sensitive information is still in a controllable state when terminal lost.(5)Designed Malware monitoring module based on the analysis of the authority.Through reverse the application's program and resolve the permission application,give tips to users when there are sensitive permissions of installation.And through the monitoring program of access,to control the operation of sensitive information.Through the modification of the contents of the Android system,to achieve re-authorization of the program.In this paper,we study the security technology of sensitive information for Android mobile intelligent terminal,and realize the sensitive information security system based on the layered architecture.The test shows that the system can meet the actual needs well in the function and performance.It has a reference value to the similar sensitive information security system.