Building the Android platform security mechanism using TrustZone

Android has been extended gradually from mobile to other IT fields. But, Android which pursues an open environment has become a main target of the attackers and malicious codes have rapidly increased. The problem is that it is difficult for users to recognize malicious applications. In this paper, to solve this problem, TrustZone developed by ARM is used in the Android platform structure which provides system security mechanisms by separating Android into a Secure World and a Normal World.