A Design And Implementation Of Fine-grained Authorization Management System Based On Android Platform

With the popularity of4 G and the advent of 5G, the mass application is more convenient to use at any time, and smart phones, tablet PCs are more and more used. A variety of intelligent devices become the people’s indispensable entertainment and work tool. The devices powered by android operating system especially are in the majority, so the android system has become the main target of malicious programs. Despite the severe situation of current android security, google uses the coarse permissions granted mechanism for the application level security that the user is responsible for their own to grant mechanisms at the beginning of the android system design, so that the android system defence is so fragile. In the face of such a situation, the application level security of the Android platform needs a new authorization management mechanism as a solution.Aiming at the limitation of the coarse-grained authorization management mechanism, this paper proposes a new authorization management solution:Detect Droid prototype system. This system provides fine-grained access control for the Android platform. But the fine-grained management model in this paper is not a simple application of access control. DetectDroid can not only control the access of privacy information, it also designs a permissions analysis module which could run in the background to analyze the privacy permissions, generating a reasonable warning when user grants permissions, and increasing the security of android system access control.Compared with existing fine-grained permissions management system, the finegrained permissions management system DetectDroid presented in this paper which is more reliable and secure in the control of privacy related permissions increases a malicious permissions detection module in the process of the permissions access control. This module allows ordinary users to be more reasonable in the face of the process of granting permissions, and can greatly reduce the possibility of being attacked in android system.