Double Encryption Approach for Security Enhancement in MANET

The Communication systems are typical data systems, which can be undetermined by unauthorized users who have illegal access to the systems. Main Problem created in attacking to malicious node and group of network, whole traffic by system break, data loss, data affecting and data failure system. Overcome node Proposed scheme uses a rolebased access control frame work, MANET concept working algorithm with combined cryptographic primitives. A cryptographic puzzle module and a SHA2 key-based module to protect traffic patterns transferred through the Mobile adhoc network. Source node sends the data packet through the wireless channel with these two combined cryptographic primitives. A node. which wants to receive the traffic pattern must solve these two primitives. First it solves the cryptographic puzzles and then it solves the key-based scheme (symmetric encryption) then only it can access the data traffic pattern packet send over the Mobile ad-hoc network. This scheme is compatible with packet transmission and storage and it takes low power consumption. Our experiments have demonstrated that combines the cryptographic primitives for key based and Puzzle based techniques to provide better security, since it uses the doubleguarded security so that it provides efficient and secured system for Mobile ad-hoc Network.