Blockchain-Based Authentication Scheme with an Adaptive Multi-Factor Authentication Strategy

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Roles</td><td class="align_center">Flag bit</td><td class="align_center">Responsibilities</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Follower</td><td class="align_center">0</td><td class="align_center">Transmit messages and verify blocks</td></tr><tr><td class="align_left">Candidate</td><td class="align_center">1</td><td class="align_center">Verify blocks and participate in consensus</td></tr><tr><td class="align_left">Leader</td><td class="align_center">2</td><td class="align_center">Generate blocks and participate in consensus</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Flags and responsibilities of nodes with different roles.</div>

Mobile Information Systems

tab2

Table 2

Table 2: Blockchain-Based Authentication Scheme with an Adaptive Multi-Factor Authentication Strategy 