Research And Implementation Of Data Security Protection System Based On Android

With the rapid development of mobile Internet and the increasing market share of Android mobile phone,Android mobile terminal has become an indispensable privacy Butler.People store traditional privacy data on Android mobile terminals,including call records,contacts,and other privacy files,such as pictures,audio and video,and text.Due to the openness of Android system,the security of privacy data and privacy files stored by users is facing a great threat.The attack APP only needs to apply for permission to get access to the user's privacy data and privacy files,thus stealing the user's privacy.Therefore,the main research content of this thesis is the personal privacy disclosure problem in Android system.Firstly,this thesis studies the Android system architecture and data encryption algorithm.Design and implement a pre-screening symmetric encryption algorithm to provide high security and fast encryption protection for user privacy.By analyzing the layered architecture of Android system,this thesis designs and implements a hybrid encryption algorithm framework in the local method layer,develops in C language to improve the operation efficiency of the encryption process,masks the details of the key encryption logic to the application layer,and improves the security of the encryption algorithm.Next,based on the theory of pre-screening symmetric encryption algorithm and hybrid encryption algorithm framework,this thesis designs and implements a personal privacy protection application of Android system by analyzing the requirements of privacy protection of Android system,which is designed and implemented respectively from the password module,data acquisition and display module,encryption and decryption module and external storage media monitoring module.Through the design of test cases,the function and performance of the personal privacy protection application based on Android system are tested and evaluated.The test shows that the application function of personal privacy protection researched and implemented in this thesis is perfect,practical and has a good human-computer interaction experience,which plays a practical role in protecting the user's privacy data security.