Integration of UAVs into the fifth generation (5G) cellular networks as aerial base stations would be a promising technology to achieve several goals, namely ubiquitous accessibility, robust navigation, ease of monitoring and management. Real-time distribution of critical information must be embedded throughout transport infrastructure. The ability of Unmanned Aerial Vehicles (UAVs) with high agility, mobility, and flexibility to offload data traffic from terrestrial base stations and Road Side Units (RSUs) by providing additional access points enables swift, accurate, timely and actionable decisions in Intelligent Transportation System (ITS) based on data-driven insights. However, we must ensure secure data exchange when multi-purpose RSU is deployed for confidential data acquisition and distribution. It is a prerequisite for data sovereignty in the Internet of Vehicles (IoV) network to be facilitated by secure data exchange between trusted parties. Therefore, we propose a robust encryption method to incentivize data exchange within the ITS ecosystem to enable confidential data sharing in IoV communication. In addition, the novel encryption method we present enables real-time, encryption and decryption for ciphertexts containing confidential information between UAVs and the control center.