Time-Enabled and Verifiable Secure Search for Blockchain-Empowered Electronic Health Record Sharing in IoT

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Transactions</td><td class="align_center"><span style="width: 62.8345ptpx;"><svg height="12.4698pt" id="M567" style="vertical-align:-3.18147pt" version="1.1" viewbox="-0.0498162 -9.28833 62.8345 12.4698" width="62.8345pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M620 675H597C578 656 570 650 541 650H144C112 650 104 653 94 675H72C59 618 42 552 23 493L53 491C71 534 88 564 105 585C124 608 144 615 238 615H290L197 121C182 40 174 34 88 28L82 0H361L367 28C275 34 266 38 281 121L374 615H441C522 615 543 608 553 583C562 560 566 531 565 493L597 494C603 551 612 629 620 675Z"></path></g><g transform="matrix(.013,0,0,-0.013,7.502,0)"><path d="M536 404C536 423 520 448 491 448C445 448 398 404 308 283L286 338C255 416 242 448 217 448C182 448 138 402 92 341L111 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colspan="5"><hr/></td></tr><tr><td class="align_left">Length (bytes)</td><td class="align_center">1436</td><td class="align_center">6556</td><td class="align_center">12956</td><td class="align_center">96</td></tr><tr><td class="align_left">Average time (ms)</td><td class="align_center">59.8</td><td class="align_center">357.82</td><td class="align_center">623.91</td><td class="align_center">47.446</td></tr><tr><td class="align_left">Max time (ms)</td><td class="align_center">105</td><td class="align_center">645</td><td class="align_center">1130</td><td class="align_center">98</td></tr><tr><td class="align_left">Min time (ms)</td><td class="align_center">48</td><td class="align_center">329</td><td class="align_center">614</td><td class="align_center">37</td></tr><tr><td class="align_left">Gas used (wei)</td><td class="align_center">1277948</td><td class="align_center">2466374</td><td class="align_center">4544114</td><td class="align_center">471536</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Time consumption of transactions.</div>

Security and Communication Networks

tab5

Table 5

Table 5: Time-Enabled and Verifiable Secure Search for Blockchain-Empowered Electronic Health Record Sharing in IoT 