Analysis and Improvement on an Authentication Protocol for IoT-Enabled Devices in Distributed Cloud Computing Environment

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left"> </td><td class="align_center">P1</td><td class="align_center">P2</td><td class="align_center">P3</td><td class="align_center">P4</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">Xue et al. [<a href="/journals/mpe/2020/1970798/#B11" target="_blank">11</a>]</td><td class="align_center">7H + 2X</td><td class="align_center">5H + 5X</td><td class="align_center">25H + 25X</td><td class="align_center">37H + 32X</td></tr><tr><td class="align_left">Improved protocol</td><td class="align_center">7H + 3X</td><td class="align_center">5H + 6X</td><td class="align_center">18H + 21X</td><td class="align_center">30H + 30X</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr><tr class="table-fn"><td><div>P1: registration phase; P2: login phase; P3: authentication phase; P4: total computation cost; H: hash computation and its time cost; X: xor operation and its time cost.<br/></div></td></tr></table>

<div>Comparison of computation costs.</div>

Mathematical Problems in Engineering

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Table 3

Table 3: Analysis and Improvement on an Authentication Protocol for IoT-Enabled Devices in Distributed Cloud Computing Environment 