Fundamental features of mobile ad-hoc wireless networks (MANET) make implementing secure communication difficult. Lack of infrastructure, wireless connectivity, and scattered cooperation, dynamic topology, lack of affiliation, limitations on resource, and node vulnerability are some of these traits. The two main categories that may be used to broadly categorize attacks in a MANET are routing attacks and data forwarding attacks. When an attacker tries to take over a network’s routing protocol, this is known as a routing attack. Any action or behaviour that violates the established standards for the routing protocols is known as a routing attack. A routing attack’s main objective is to deceive or otherwise obstruct a network’s regular operation by disseminating fake routing updates. There are many ways to go about doing this. Data packets may be altered or deleted during data forwarding attacks, but none of these actions affect the routing algorithm in any way. We contributed a method for securing the routing protocol called ad-hoc on-demand distance vector (AODV). The suggested method offers security for packet routing and might effectively thwart attacks like impersonation, black holes, and routing information modification. A mechanism known as a hashed message authentication code (HMAC) is used in the proposed method. This feature makes it possible to quickly authenticate senders and intermediary nodes in addition to messages. We have used the NS2 tool for simulation and outcomes are contrasted with those of the conventional AODV protocol and the Secure AODV (SAODV) protocol. The results show that the recommended method reduces the network routing load and time delay associated with calculating and verifying security fields while route discovery is occurring. Additionally, the proposed approach performs better than the original AODV protocol when malicious nodes are launching black hole attacks on the network.