Research Of System Security Technology Based On SEAndroid

Smart phones and mobile devices has been fully integrated into the life of modern people, both in recreational, social, educational, medical and mobile payments, and other areas. Android operating system for smart phones accounted for a market share of more than 85%, and continues to increase. Smart phones brings a wealth of application as well as a large number of malicious programs, taking into account the Android system using generalized and the attractive revenue that malware to their developers,security threats to mobile phone users will only become increasingly serious. How to protect your mobile phone security and user privacy is becoming one of the hot spots.Firstly, the Android architecture and special components of the system were introduced, and then analysis the Android platform security mechanism, after discovering problems with existing security mechanisms made detailed analysis of access control technologies. Next studied SELinux security subsystem which on the Linux platform based on mandatory access control technology, after analysis the distinction between functional requirements and security requirements of the mobile device and the PC platform, made systematic research of SEAndroid security mechanisms for mobile which improve from SELinux security system, then the article came up with the malware protection systems based on the security mechanism of SEAndroid, according to the permissions which applications applied for and the install-time mandatory access control mechanism provided by SEAndroid, System can classify applications automatically and dynamic label security context to the applications, compared to the original default security context token, this kind of way can make a well grained classification, can make a more targeted strategies and do better on protecting system security as well.