Key Management Schemes for Multilayer and Multiple Simultaneous Secure Group Communication

<table>Hierarchical key tree structure for multilayer secure group communication with  <svg height="10.325" id="M116" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 17.237499 10.325" width="17.237499" xmlns="http://www.w3.org/2000/svg">
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International Scholarly Research Notices

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Figure 2

Figure 2: Key Management Schemes for Multilayer and Multiple Simultaneous Secure Group Communication 