Formalization and Verification of the ICC Mechanism in Android System Using CSP

With the rapid development of mobile computing technology, Android System is widely used in smart devices, and the quantity of Android Apps continuously grows. The Inter-Component Communication (ICC) mechanism in the Android framework allows communication between components (inside the same App or on different Apps). However, some security issues are caused by this mechanism, especially in the case of Inter-App Communication (IAC). To ensure the security of the communication in Android System, we formally model the ICC mechanism using Communication Sequential Process (CSP). After that, we verify four properties of the model using the Process Analysis Toolkit (PAT) with the help of C#, including Deadlock Freedom, Data Reachability, Data Security, and Data Reliability.