Description

Abstract: Mobile Ad hoc Network (MANET) is a collection of mobile nodes equipped with both a wireless transmitter and a receiver that communicate with each other via bidirectional wireless links either directly or in directly.  This means that two nodes cannot communicate with each other when the distance between the two nodes is beyond the communication range of their own. A digital signature is a mathematical scheme for demonstrating the authenticity of a digital message or document. A valid digital signature gives a recipient reason to believe that the message was created by a known sender, such that the sender cannot deny having sent the message. MANET is popular among critical mission applications, network security is of vital importance. Unfortunately, the open medium and remote distribution of MANET make it vulnerable to various types of attacks. Rapidly changing topology and membership of nodes. Nodes may leave a network at any time or new nodes can enter network so they cannot be trusted for critical network functions of packet forwarding and routing.