Research On Access Control Security Technology For New Generation Mobile Intelligent Terminal

Smartphone with its powerful functions has expanded into people’s life, study and work andfinally gained popularity. However, the openness and flexibility of smartphone brings the greatpotential security problems to the mobile terminal. The security of personal privacy data hasbecame the important problem that attracts great concern. How to implement access controleffectively on smartphone has become a new hot topic of the terminal security research in recentyears.A study had been made on new generation popular mobile intelligent terminal. We studiedAndroid mobile terminal access control security mechanism as well as existing problems. Based onthe existing security mechanism of Android, we had made a further study on access permissionmechanism, message access control and multi-user access. The main work of the paper is asfollows:Firstly, we analyzed and summarized the existing Android phone control security mechanism,focused on permission access security mechanism, and put forward to the existing deficiency incurrent access mechanism. According to the study of the Android security scheme based on asecurity distance, we proposed optimization scheme that access permission divided into fourcategories, with combination among four kinds of permissions, quantified permission combinationsecurity threat value for reducing application security threat coarse-grained value of scheme basedon security distance.In addition, we analyzed relevant technologies of current message access control, aiming atthe fact that most of spam message defense plans focused on short message service center, weproposed spam message defense scheme based on the Android, then focused on two aspects ofnumber blacklist mechanism and improved Bayesian classification method for filtering out spammessage.Finally, we discussed the issue of current Android operating system supports only a singleuser, and proposed a new multi-user access control system(MUAC) based on the application layerof Android. With the classification of applications on Android by access permission, the MUACsystem can be registered by account and password authentication to get the operational applicationsin ListView, so as to achieve the goal of multi-user access control. According to the above proposed schemes, we used the Android mobile phonedevelopment environment to simulation experiments, and analyzed the proposed schemeeffectively, demonstrated the rationality and superiority of the scheme.