A Medial node based privacy approaches for preventing selective jamming in wireless networks

Wireless networks is still an emerging field in terms of security. Taking advantage from unreliability nature of wireless medium, antagonists can easily accomplish numerous attacks. Among those attacks, selective jamming is more clever technique in which jammer will target and corrupt only the messages of high importance. There are existing methods to prevent selective jamming in internal threat model like strong hiding commitment scheme(SHCS), cryptographic puzzle hiding scheme(CPHS) in which they focused only on the correct message delivery to the receiver node. But on the other side, jammer node can solve the puzzle by taking entire packet, making the adversary to know the secured message that was transmitted. Initially, a mechanism to identify the existence of selective jamming is demonstrated. Later, a solution to know the exact node that is performing selective jamming is derived. Then two novel techniques called Embedding Future Key (EFK) and Medial node Method (MNM) are proposed to prevent selective jamming. Finally, experiments are conducted on proposed methods and it is established that better throughput is achieved than the existing methods.