Design And Implementation Of Property Isolation System Based On Android Platform

In recent years,with the growing development of modern science and technology,smart phones have become good partners in people's lives and provide a great convenience in many aspects so as to improve the quality of life.The biggest convenient way is to provide a lot of flexibilities in managing their property.The use of smart phones for payment or transfer has become the most popular way.In order to meet this demand,a variety of third-party payment platforms appeared on the market,such as Alipay,WeChat and the major bank applications.When people go out for shopping,they can use smart phones to pay bills through these third-party platforms and do not need to bring cash.Therefore,they give people great convenience and security.However,android system hold a large market share in contemporary smart phones.Because of its open nature,there appear a lot of malicious software which seriously threaten people's property privacy data's security.Therefore,the thesis proposes a scheme that helps smart phone users protect their property application data.The thesis focuses on the research of the existing methods to protect users' property based on Android platform and analyzes the existing security vulnerabilities.On this basis,the thesis proposes two kinds of designing scheme which helps people protect their property.By the contrast analysis,the thesis gives the final scheme in order to protect the users' property application of static data and transmission data.In order to achieve the purpose of isolation with common application data,the thesis sets up a separate storage space that stores user property related application data,and uses MAC(mandatory access mechanisms)to protect it.Therefore,it can also ensure the payment security even if the user's phones are infected with the virus.The transmission Data is protected through the wifi network environment safety detection,transaction message authentication code and the system interface's protection from hijacked.The thesis completes the detailed design and implementation of the property isolation system based on Android platform.First,this thesis studies and analyses the related technologies,including Android system architecture,Android key components,Android security mechanism and SEAndroid security mechanism.The thesis presented the function of the software requirement analysis and completed the overall program design through the property of isolation system overall architecture.Its functionalmodules including system interface module,data isolated storage,data security protection,wifi security detection,SMS security detection and system against the screenshots are completed with code by the thesis.In the end,the thesis conducted the correlation test on the function,performance and safety of the property isolation system.Test results show that the isolation system can be stable operation and protect the user application property of static and transmit data,which conform to the expected design goal.