A mobile ad hoc network is a collection of mobile nodes forming an ad hoc network without the assistance of any centralised structures or administration. It is a wireless network and a self-configuring one. Due to high mobility of nodes in mobile ad hoc networks (MANETs), there exist frequent link breakages which lead to frequent path failures and route discoveries. The overhead of a route discovery cannot be neglected. In a route discovery, broadcasting is a fundamental and effective data dissemination mechanism, where a mobile node blindly rebroadcasts the first received route request packets unless it has a route to the destination, and thus it causes the broadcast storm problem. In this phase, cross layer is deployed to improve lifetime and quality of service (QoS). By deploying secret sharing scheme have provided message integrity and authentication. By using the experimental result of CLSMRSCA achieves more path reliability rate, lifetime, end to end delay and less overhead than the existing scheme CLMNRP.