Improved Random Key Pre-Distribution Scheme for Wireless Sensor Networks
Kuang Wang · Chuangan jishu xuebao · 2010
In order to resolve the problem of low connectivity in the basic random key pre-distribution schemes,we propose an improved key management scheme for Wireless Sensor Networks(WSNs).By performing a 'neighboring' node expansion protocol,secure isolated nodes find the sharing key(s)with sensor nodes located at the outside of one-hop so that they establish a secure path to guarantee the network connectivity.Analysis and simulation results show that our proposed scheme has higher global connectivity,higher security performance and larger total usable energy compared with the original scheme.And the performance improvement of proposed scheme is in the price of limited additional negotiation overhead.