Secured broadband data access system in WiMAX

Security mechanism is to meet the expectations from mobile users to provide seamless services in mobile WiMAX. Handover should take place in highly secured and in most improved means. The main motive of the mobile technologies is to provide seamless cost effective mobility. But this is affected by Authentication cost and handover delay since on each handoff the Mobile Station (MS) has to undergo all steps of authentication. To overcome these vulnerability we propose an En-hanced EAP-based pre-authentication for fast and secure inter-ASN handovers (HO) using WPKI (wireless public key infrastructure). In this approach, a improved X.509 certificate is generated based on Elliptical Curve Cryptography (ECC) algorithm, then an enhanced mutual authentication flow, which enhances the security and working efficiency of the mutual authentication in multi-hop WiMax system is designed. Asymmetric key cryptography is used to secure the pre-authentication message exchange with low demand of computational resource. The proposed scheme can also meet the security requirements of an authentication protocol. The proposed scheme increases the security and practicability of WiMax system, which has better referenced value to the improvement of IEEE 802.16e standards. The proposed work is simulated by NS2 model and by MATLAB