Analysis Of Android Terminal Security Mechanism And Research Of Safety Protection Technology

Android operating system is an open source operating system of intelligent mobile phone based on Linux2.6 kernel with Google launched in 2007. Since 2010, the Android system has become the most global popular intelligent mobile phone platform, and the same time the security problems is reflected, including spam message, privacy theft, bank card information leakage, the trojan horse, virus and so on, these security problem brought a serious security threat to privacy information, account security, and communication security.The Android system is an open source operating system, as the hierarchical and modular software structure mode and application are mostly based on the characteristics of Internet applications, the Android system is often attacked by virus and Trojan horse easyly, with the widely application of Android system in the mobile terminal, the security problem has become the main objectives of the study of the security company. The person in various fields is also actively involved in research on security of Android system in order to enhance the safety of Android system.In this thesis, we researched the security problem, the security mechanism and the security vulnerabilities of Android operating system, in-depth analysed the security vulnerabilities, combined the vulnerability analysis and safety demand, based on the safety demand, realized the protected technology of Android terminal security. In this thesis, we constructed a framework to enhance a unified general security mechanism which based on the analysis of Android terminal security mechanism, enhanced the safety of Android terminal in each hierarchical framework, at the same time we realized a variety of security protection technology to removed the security threats of the Android terminal, and provided a safe environment of work to the terminal.In this thesis, the hierarchical structure and characteristics of Android operating system are introduced in detail. The research of Android operation system on security mechanism includes two aspects: Linux kernel security mechanism and the security mechanism of application layer with framework layer system. Relying on the Android security mechanism, the security vulnerabilities is analyzed, including the kernel layer and the application layer security vulnerabilities. For the security mechanism, security vulnerabilities, security threats and security needs of the Android terminal, the unified terminal security protection framework of the Android terminal is established, And based on the security protection framework, the security protection technology of Android terminal is realized.The security protection technology can be applied to mobile phone software application development, can enhance the security of terminal effectively, prevent all kinds of security threats to influence and control the terminal, can realize the use of safety with terminal.