Abstract
The smart grid, new generation of the electric grid, aims to improve the energy production, delivery and customer usages. To reach this goal, smart devices, smart meters, etc. must exchange information with the control center in a bidirectional way. The Home Area Network (HAN) manages communications among the smart meter and smart devices inside the home. The ZigBee Alliance developed a profile for the energy HAN called the ZigBee Smart Energy Profile (SEP). While the HAN is vulnerable to several types of attacks (eavesdropping, spoofing, DoS, etc.), SEP defined security mechanisms to join the network and to protect the traffic. In this paper, we identify vulnerabilities of SEP security mechanisms and we propose improvements to the SEP join process and key refreshment. We conducted simulations to evaluate the latency for energy real time applications while using SEP and the success rate for SEP and the enhanced SEP.
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