Abstract:
Ad-Hoc networks are spontaneously formed when devices connect and communicate with each other. One
of the significant issues in mobile Ad-Hoc networks is seeking an efficient and secure route from a specific
source leading to an anticipated destination. In managed-open environments there is a chance for predeployment of some keys and certificates. ARANz protocol has been proposed to be implemented in such
environments and utilized the authentication techniques of the original Authenticated Routing for Ad-Hoc
Networks (ARAN). ARANz seeks to enhance security, attain robustness and solve single point of attack and
failure problems by electing numerous certificate authority servers. Furthermore, ARANz ensures improved
scalability and performance through dividing the network into zones and using restricted directional flooding.
A detailed and extensive simulated performance evaluation has been conducted to assess ARANz and
compare it with ARAN protocol and Ad-Hoc On-demand Distance Vector (AODV). Results demonstrate
that ARANz is able to discover secure routes effectively within relatively large networks having large number
of mobile nodes, while attaining the minimum packet routing load. Results also show that ARANz has
superior performance regardless nodes density, local communications percentage, zone size and failed nodes
percentage.
