The Design And Implement Of SMS Filtering Module Of Application Protective System On Android Platform

Intelligent terminals gets popular as promotion of 3G. In the competition of various platform,android gradually occupies the mainstream.Google learns app store mode from apple and sets up its android market. Facing up the booming of application market,users install kinds of software and may import serious security threat and danger.As investigation shows,security problem becomes the most important issue of intelligent terminals,in addition to traditional problems of telecommunication such as harassing phone and message, many malicious software come into terminal and steal user's personal data,doing harm to user's vital interest.This paper focuses on the security of application layer on android platform, based on its framework and system security mechanism,pays attention to the secutity perspective during design of application, analyzes basic principle of application designing from component design,data sharing,component interaction and user interaction, providing theoretical guidance for developers.After that, according to the safety requirements of users, design a application protective system, which had divided into data protection ubsystem,connection protection subsystem,public application protection ubsystem, state overall design of function and logic structure.Finally focus on the SMS filtering module,combine white and black list,key word filtering and text classification,in the process of realizing classifier the paper proposed improved method based Native Bayes algorithm,lastly integrated the filtering process into the SMS application,having function of automatically filtering incoming spam SMS.Android is an open platform,application is core of it.Our protective system provide protection from every perspective,meet the need of various application on Android.Meanwhile,user shoud enhance safety consciousness,don't easily trust download application,notice using passward protecting the important data.Android security need close cooperation of developers,users,network administrators,content providers and service providers.As continuous upgrade of Android and gradual familiarity of users,I believe prospect of intelligent terminal will get more and more glorious.