1. The researchers designed an HMACSAH1 based authentication protocol for securing communication between drone and ground station; this is a lightweight, much secure, and balancing of security with performance based protocol. The performance analysis result shows that the protocol is suitable for practical implantation in a real-world IoD environment. 2. The authors mitigated the known vulnerabilities i.e. privileged insider and stolen verifier attacks, also tackled the outdated data transmission flaws, that often noted in prior protocols. 3. The researchers give directions to the different flying zones for drone, dynamic network topologies, and specified all possible threats to the system. 4. The researchers analyzed the protocol on the widely used random oracle model and simulate using ProVerif2.02 software verification toolkit. 5. A pragmatic illustration for known attacks shows that the protocol is robust and resists all known attacks