An Optimal Authentication Protocol Using Certificateless ID-Based Signature in MANET

Mobile Ad hoc Network (MANET) is a matter of great concern and an emerging research field of ubiquitous computing. Nowadays, security issues regarding MANETs are gaining remarkable research interest. MANET is more vulnerable to the security attacks by resource constraints. An ID based cryptography allows an user to generate their public keys without exchanging any certificates. In above scheme, public/private key can be construct without exchanging any certificate. The idea of bilinear pairings make the system efficient and easy to providing basic security. In order to provide secure communication in MANET, many researchers used different schemes to provide authentication. However, existing techniques have drawbacks such as forgery on adaptive chosen plain text message and back secrecy in traditional authentication schemes. In this paper, we work on an ID based signature scheme for achieving reliability and secure authentication in MANET. We show that proposed id based signature scheme is secure against forgery attack in the random oracle model under the Inverse-Computational Diffie-Hellman Problem (Inv-CDHP) assumption. Proposed scheme is more efficient in term of computation than other traditional schemes.