DIRECT: Dynamic Key Renewal Using Secure Cluster Head Election in Wireless Sensor Networks

In modern sensor networks, key management is essential to transmit data from sensors to the sink securely. That is, sensors are likely to be compromised by attackers, and a key management scheme should renew the keys for communication as frequently as possible. In clustered sensor networks, CHs(Cluster Heads) tend to become targets of compromise attack because they collect data from sensors and delivers the aggregated data to the sink