Design And Implementation Of Privacy Protection Under Android Platform

With the development of the Android market,Android smartphones are becoming more and more popular,and people are increasingly dependent on them.However,when users use many functions,they need to enter personal privacy information,such as geographic location,address book,personal identity information,photo album,and so on.In this way,many lawless elements will try to steal this private information for their own personal gain.They use the vulnerability of the mobile terminal to implant malicious programs into the smart phone,so the user's private data can be easily stolen and utilized,and the loss suffered by the user may be incalculable.Therefore,the privacy security of the Android system is a pressing issue today.Designing a privacy protection system under the Android platform is an urgent task.In view of the privacy leakage of the Android platform,the Android platform is mainly improved from its rights management system and data encryption in this paper.On the one hand,in order to fill the loopholes of the coarse-grained rights management mechanism of the Android platform,a fine-grained rights management scheme is proposed.The functions such as the selection and modification of permissions,the extraction and analysis of privacy rights,and the identification of malicious applications are included in this program.Malicious applications stealing the privacy data of mobile phone users are mainly blocked by the authority control of the Android system.On the other hand,it is extremely unsafe to store user privacy data in plain text in mobile phones.Therefore,a data encryption scheme is proposed to symmetrically encrypt the privacy files that need to be protected in the user's mobile phone,including pictures,videos and document file.Through this solution,mobile phone users can more intuitively encrypt the privacy data,and the security of the Android platform has been added an effective protection measure.The privacy protection system under the Android platform designed in this paper improves the protection ability of the system from two aspects: rights management and data encryption.Compared with the traditional security protection related applications,a malicious application identification module is added to the system,that is,when the user wants to agree to the application accessing a certain privacy-related right,if the permission is detected that the application is turned into a malicious application because of the permission,users will be advised to block to this permission.At the same time,users are enabled to not only control their permissions by the fine-grained rights management scheme when the application is installed,but also modify the permissions after the application is installed.The possibility of users managing permissions is more flexibly improved by this function.The data encryption module is a data protection strategy to prevent privacy leakage.The encryption operation of larger files is classified by the scheme with all encryption or partial encryption,which greatly improves the efficiency of encryption of private data and provides effective protection for users.At the end of this paper,the various functions of the system are tested in detail.The test results show that the privacy protection effect of the Android platform has been achieved by the system,and the user can realize the rights management and data encryption,which effectively protects the user's privacy.