Date Added: Mar 2012
Now-a-days Wireless Sensor Network (WSN) is an emerging technology in ubiquitous computing environment. When performing monitoring tasks in hostile environments, security requirements become critically important and also the most challenging issue in WSN. Due to the mobility of the nodes, high security and authentication should be needed. So considering the user mobility, re-authenticating the mobile node is significant. For Re-authenticating the mobile node, the authors put forward an efficient method. Re-authenticating the mobile node should be in less cost as well scalability is maintained. Also for fast and secure transaction, multipath multicasting technique is implemented. Based on this technique, network life time can be maximized as well power consumption can be minimized.