Recently, Network-on-Chip (NoC) has become the standard for modern communication infrastructures in multi-processor systems on chip, due to scalability issues in this area. However, such embedded systems are vulnerable to security threats such as the extraction of confidential information and are susceptible to faults. In this paper, we consider malicious routers within the NoC and focus mainly on improving the efficiency, robustness, and reliability of the communication based on a secure communication protocol with authenticated encryption. We use random linear network coding with a generation-based approach, and evaluate its efficiency using a cycle-level NoC simulation platform written in SystemC TLM. Finally, we were able to show that the robustness and reliability of the NoC communication was increased up to 10%, even when 8 attackers are present.