  In parallel with the advances of aerial networks, the use of drones is
quickly included in daily activities. According to the characteristics of the
operations to be carried out using the drones, the need for simultaneous use of
one or more drones has arisen. The use of a drone swarm is preferred rather
than the use of a single drone to complete activities such as secure crowd
monitoring systems, cargo delivery.
  Due to the limited airtime of the drones, new members may be included in the
swarm, or there may be a unification of two or more drone swarms when needed.
Authentication of the new drone that will take its place in the drone swarm and
the rapid mutual-verification of two different swarms of drones are some of the
security issues in the swarm structures. In this study, group
authentication-based solutions have been put forward to solve the identified
security issues. The proposed methods and 5G new radio (NR) authentication
methods were compared in terms of time and a significant time difference was
obtained. According to the 5G NR standard, it takes 22 ms for a user equipment
(UE) to be verified by unified data management (UDM), while in the proposed
method, this time varies according to the threshold value of the polynomial
used and it is substantially lower than 22 ms for most threshold values.
