Study On The Strengthening Technology Of Android System Based On Enhanced Application Control

Android is a mobile phone operating system produced by Google company in 2007. With powerful features and massive applications, Android quickly occupied the smart mobile phone market. With the Android system market share growing, applications based on Android platform become more and more complex. A variety of softwares not only leads to the prosperity of the Android Market application, but also provides many conveniences for people’s life. It is worth mentioning that Android booms the mobile Internet business of China. Moreover, Android leads to the birth of a number of Internet Co, and provides many employment opportunities for the society.The development of mobile Internet is rapid, and the applying frequency of mobile applications in daily life becomes more and more. But things have two respects. When Android provides service and experience for people, a variety of malicious deductions, rogue software, data breaches and other issues emerge in an endless stream, which brought serious problems to the users. As an emerging platform, Android’s rapid development is also a matter of recent years. People’s awareness is still stuck in the functional machine era, and they do not concern the virus in the mobile phone. In addition, development threshold of Android application is low, so that mobile malicious applications began to appear and spread.Therefore, the application security of Android system in the future is likely to become a bottleneck which restricts the development of mobile internet, and it’s imperative to solve the security problem of Android application.Aiming at the safety problem existing in Android system, based on the research on the existing technology of strengthening Android system, the following work has been done:Firstly, in view of malicious applications of the current market, this paper under the existing Android security mechanism, constructs a trust mechanism based on the digital certificate by modification to the native Android system. This paper will also be combined with the application trust mechanism and application installation process improvement of Android system, and put forward authorization installation technology based on digital certificate and forced signature verification technology relying on the existing digital signature scheme.Secondly, application installation mechanism can be bypassed by malicious applications using vulnerability and exploit. In this paper, the installation components and the system default application starting component are studied and improved, and respectively in the system startup application installation stage and start-up of the system we should use the application authorization identification. If the authentication fails, the related operation is carried out according to the user’s strategy.Finally, we study the application of data storage methods in Android system. Research found that the application of the data are based on the storage of plain text, and the security of the data can not be guaranteed. In order to support more secure storage, this paper decides to achieve the encryption and decryption of storage in the original storage mode.