Secure AODV routing protocol based on homomorphic digital signature

Mobile hosts in a Mobile Ad-Hoc Network are linked by wireless links without usual routing infrastructure and link fixed routers. Ad-Hoc Distance vector Routing (AODV) is among one of the prominently used routing protocol for packet transfer from source to destination. It relies on maintaining most recent information, for which, each ad-hoc node maintains hop count and sequence number field. Ad-hoc nodes are prone to security attacks because of their mutable nature. Analogously, routing updates are transmitted in clear text, which again poses a security hazard. In this paper, we will propose an improved version of AODV routing protocol using Homomorphic Encryption Scheme which prevents pollution attack and accomplishes in maintaining Integrity Security Standard by following minimum hop count path. Simulation mechanism is used to evaluate HAODV Routing Scheme and results show that improved throughput and ETE delay can be obtained.