Emergence of Challenge Mechanism in the Light of Existing Secure Routing Schemes in MANET

Abstract: Mobile Ad-hoc Network (MANET) is a collection of mobile nodes which can form a network at any time and at anywhere. All nodes act as routers and help in forwarding data between any two. Security is a major concern in ad-hoc network. Due to frequent node movement, routing algorithms in wired network is not suitable for MANET. Several separate routing algorithms have been designed in MANET for data transfer. But the problem is due to the misbehaving nature of mobile nodes. If a node is of misbehaving nature, it can actively attack the network and also it will not use its own constrained resources for the use of others, but it will preserve them for itself. There are different security based routing schemes to prevent selfishness in MANET and thereby to make routing in ad-hoc network secure. They are Credit based, reputation based, Multipath Routing schemes, Cryptography based and Trust based schemes etc. This paper explores the concept of secure routing in ad-hoc network by preventing malicious nodes from routing using a mechanism called Challenge in FACES Algorithm and also to make a study of the existing secure routing schemes available in MANET.

Keywords: MANET, routing schemes, ad-hoc, Challenge