None of the research ideas discussed above consider
security issue but in 2012 SECURE-LEACH [16] was
proposed to increase the security of cluster head in a sensor
field. The key idea behind this technique is to generate large
number of key pools at the time of deployment. The unique key is assigned to each node randomly and each one shares the
pair wise key with the base station. In this work two protocol
using spanning tree and cluster based approach are proposed.
The rest of the paper includes Problem statement in section 2,
system model in section 3 and simulation results in section 4.