An AES cryptosystem for small scale network

The Advanced Encryption standard (AES) cryptosystem for the small scale network presents the implementation of the AES algorithm, FIPS 197, on the microcontroller operated on the real-time operating system (RTOS) for securing data in a small scale network for example as an UAVs wireless communication. The Electronic Code Book (ECB) mode of the AES algorithm is mainly used as the cryptographic core. The RTOS has a scheduler with Pre-emptive scheduling algorithm in which each role is to give access the processor for tasks with higher priority. The target hardware is implemented on the arm cortex-M4. The performances of the implemented system are evaluated based on the communication of UAVs including the control commands and telemetry commands.