# Security Enhancement Using Cache Based Reauthentication in WiMAX Based E-Learning System

## TL;DR

This paper proposes a cache-based reauthentication method to reduce delays in WiMAX-based E-Learning systems, improving security and performance.

## Contribution

The novel contribution is a Key Caching Based Authentication scheme that reduces reauthentication delay by 50%.

## Key findings

- The cache mechanism reduces 50% of the delay during reauthentication.
- Key Caching Based Authentication improves data access speed in delay-sensitive E-Learning applications.
- The method enhances security by forcing reauthentication to prevent session hijacking.

## Abstract

WiMAX networks are the most suitable for E-Learning through their Broadcast and Multicast Services at rural areas. Authentication of users is carried out by AAA server in WiMAX. In E-Learning systems the users must be forced to perform reauthentication to overcome the session hijacking problem. The reauthentication of users introduces frequent delay in the data access which is crucial in delaying sensitive applications such as E-Learning. In order to perform fast reauthentication caching mechanism known as Key Caching Based Authentication scheme is introduced in this paper. Even though the cache mechanism requires extra storage to keep the user credentials, this type of mechanism reduces the 50% of the delay occurring during reauthentication.