Published Paper Details:

Mobile Ad hoc Network is a collection of wireless mobile devices with restricted broadcast range and resources. Communication is achieved by relaying data along appropriate routes that are dynamically discovered and maintained through collaboration between nodes. Discovery of such routes is a major task, both from efficiency and security point of view. Due to MANET characteristics security is a key issue in ad hoc networks In this paper, we proposed a method SDE (Secure Dynamic Encryption) based on asymmetric key and dynamic encryption for the OLSR protocol. SDE-OLSR aims to enhance the security against all kinds of attacks without having impact on the performance of the network. This proposed SDE_OLSR is compared with OLSR protocol in different modes such as normal mode, attack mode to evaluate the efficiency of SDE-OLSR in MANET. This empirical results shows the increase of packet delivery rate (PDR) is by 23 % and reduction in delay by 27 %.