An ad hoc network is a multi-hop wireless communication network supporting mobile users without any existing infrastructure. Security is an essential requirement in mobile ad hoc network to provide protected communication between mobile nodes by establishing robust and fault free route. Several secure routing protocols like SEAD, SAODV and SRP exists ensuring the three security pillars namely Confidentiality Integrity and Availability. Authenticated Routing for Ad hoc Network (ARAN) fills the void created by deficiencies in other protocols by providing authentication, integrity, and non-repudiation sans confidentiality. The proposed system demands the use of reputation in ad hoc network for efficient trust routers and relays in ARAN by tolerating the overhead caused by communication, computation and storage complexities. Simulation results in NS2 accurately predict the performance of proposed scheme in terms of packet delivery ratio, end-to-end delay, average path length, average route acquisition and control overhead under varying network conditions.