Covert Communication Scheme Based on Bitcoin Transaction Mechanism

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Notations</td><td class="align_center">Description</td><td class="align_center">Content</td><td class="align_center">Length</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left"><i>K</i></td><td class="align_center">Key</td><td class="align_center">0xedb53cfdd24edb48cfc9a58ad4c2e9a5d4e905358047383993fbdb525952c178</td><td class="align_center">256 bits</td></tr><tr><td class="align_left"><i>k</i></td><td class="align_center">Symmetric key</td><td class="align_center">0x79b946d16b547aa4399c85ff409e2961</td><td class="align_center">128 bits</td></tr><tr><td class="align_left"><i>A</i><sub><i>K</i></sub></td><td class="align_center">The address generated with the key <i>K</i> as the private key (as the input address)</td><td class="align_center">1Ke9bGkRzpHe5AE6Ei18bULT95eCVehFfM</td><td class="align_center">34 bytes</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Updated key and address (Experiment <a href="https://static.hindawi.com/articles/scn/volume-2021/3025774/figures/#expe1" target="_blank">1</a>).</div>

Security and Communication Networks

Covert Communication Scheme Based on Bitcoin Transaction Mechanism

Table 4