Scalable and Storage Efficient Dynamic Key Management Scheme for Wireless Sensor Network

Algorithm 3

Refresh the key of node.

Require: Network

 1. BS initiate key refresh by brodcastion message BS->:M{ Hello, BS, Lavel=0, Energy= }

 2. All the sensor node receiving the message set =L and forword the message by increasing the level and seting their id and energy lavel.

 3. After seting up the value of all node execute algorithim 1

 4. Node chose the cluster head as per weight