Unmanned Aerial Vehicles (UAVs) are increasingly deployed across a wide range of applications, including military surveillance, environmental monitoring, and disaster management. Typically, UAVs are remotely operated from ground control stations (GCS), but as their roles expand, their communication requirements grow in complexity. Beyond basic flight control commands, advanced missions may involve UAV-to-UAV communication to support collaborative tasks or swarming behaviours. Given the critical nature of many of these applications, the underlying communication protocols are potential targets for cyberattacks. In this work, we propose a communication framework aimed at enhancing the security of UAV systems by combining both symmetric and public-key cryptography.