The Research And Design Of Mobile Phone Security System Based On Android Platform

In recent years, with the rapid development of mobile Internet at home and abroad, the entire ecosystem of the Android is more and more prosperous, the market share of the terminal based on Android operating system is getting higher and higher. However, with users and applications being increasingly rich, the risk brought by the openness of the system are a serious threat to the security of the Android platform. Behavior such as stealing user privacy, charges deducting maliciously, malicious system intrusion occurred frequently, which poses a great threat to the security of user information and property, so the research on the security mechanism of Android is very necessary.Android system security risks are mainly from two aspects:malicious code and message push. So this paper mainly completed works for malicious code detection and message push security. Works are as follows:First of all, this paper analyzed the underlying principles of Linux and Android security mechanism, analyzed respectively in detail from the aspects of privilege mechanism, component security protection,application program signature, code confusion and so on.Secondly, this paper analyzed the malicious code detection technology deeply,designed and implemented a malicious code detection system which used combination of feature values detection staticly and behavior monitoring dynamicly, and tested the functions of malicious code detection system,proved that the system can accurately detect the malicious code.In addition, this paper analyzed of the push technology of Android platform,designed and implemented an XMPP based Android message push system, and analyzed security of push system, and tested the fuctions of push system, which proved that Android client could receive message from server of push system. Finally, this paper summarized all of work,and put forword the next plan of research.