Android Security Protection Mechanism and Decryption

With the fast development of mobile communication technology, more and more people choose smartphones, according to the latest statistics from IDC reports, vendors shipped more than 197 million smart mobile devices in the third quarter of 2012, most of them are with Android OS from Google. In present version of Android, screen lock and file system encryption are two major security protection mechanism. This paper covers the research of three kinds of security protection of Android mobile devices:in this paper, some hot topic are studied: Android screen lock pattern algorithm and decryption, Android Screen lock passcode algorithm and decryption, Storage encryption on Android devices.