Unmanned aerial vehicles (UAVs) come up with eminent opportunities for military and civilian applications. Such opportunities come with unique challenges. The high mobility of UAVs leads to the frequent change in the network topology that results in packet loss or routing path failure, and so on. Moreover, secure routing is one of the most important features while organizing wireless communication among UAVs. To counter these challenges, a secure and reliable routing protocol (SecRIP) for the flying ad hoc network is proposed for efficient and reliable data transfer. This SecRIP works toward the enhancement of the quality of service (QoS) and quality of experience (QoE) metrics. The SecRIP works on two algorithms: (i) a chaotic algae algorithm and (ii) dragonfly algorithm; these algorithm serves the functionality of cluster selection, management, and data transmission in intercluster. The proposed technique is compared with other existing techniques using a network simulator. The results show that the proposed technique is capable of maintaining the higher QoS and the QoE standards and also helps the nodes conserve their power without compromising on the performance. The simulated results show improvement as it decreases the delay incurred in SecRIP is 24%, and routing overhead is 19%, where the PDR of SecRIP is increased by 32% in comparison with existing protocols. In an extreme case, when node density increases, the SecRIP helps to limits the delay to 41%, and the PDR is 28% higher than the other existing protocols. Finally, the result demonstrates that the SecRIP protocol achieves secure and reliable data transmission.

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