ISMANET: A Secure Routing Protocol Using Identity-Based Signcryption Scheme for Mobile Ad-Hoc Networks

Mobile ad-hoc networks consist of mobile nodes interconnected by multihop path that has no fixed network infrastructure support. Due to the limited bandwidth and resource, and also the frequent changes in topologies, ad-hoc network should consider these features for the provision of security. We present a secure routing protocol based on identity-based signcryption scheme. Since the proposed protocol uses an identity-based cryptosystem, it does not need to maintain a public key directory and to exchange any certificate. In addition, the signcyption scheme simultaneously fulfills both the functions of digital signature and encryption. Therefore, our protocol can give savings in computation cost and have less amount of overhead than the other protocols based on RSA because it uses identitybased signcryption with pairing on elliptic curve. The effectiveness of our protocol is illustrated by simulations conducted using ns-2. key words: ad-hoc networks, secure routing, identity-based signcryption