A Survey of Key Technologies for Constructing Network Covert Channel

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left"> </td><td class="align_center">Facet [<a href="/journals/scn/2020/8892896/#B25" target="_blank">25</a>]</td><td class="align_center">CovertCast [<a href="/journals/scn/2020/8892896/#B26" target="_blank">26</a>]</td><td class="align_center">DeltaShaper [<a href="/journals/scn/2020/8892896/#B27" target="_blank">27</a>]</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Covert message</td><td class="align_center">Video</td><td class="align_center">Web content</td><td class="align_center">TCP/IP traffic</td></tr><tr><td class="align_left">Platform</td><td class="align_center">Skype</td><td class="align_center">YouTube</td><td class="align_center">Skype</td></tr><tr><td class="align_left">Bidirectional</td><td class="align_center"><span style="width: 7.75925ptpx;"><svg height="7.35473pt" id="M127" style="vertical-align:-0.3499303pt" version="1.1" viewbox="-0.0498162 -7.0048 7.75925 7.35473" width="7.75925pt" 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="M528 54L331 254L528 455L492 493L294 291L96 493L60 455L257 254L60 54L96 16L294 217L492 16L528 54Z"></path></g></svg></span></td><td class="align_center"><span style="width: 7.75925ptpx;"><svg height="7.35473pt" id="M128" style="vertical-align:-0.3499303pt" version="1.1" viewbox="-0.0498162 -7.0048 7.75925 7.35473" width="7.75925pt" 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="M528 54L331 254L528 455L492 493L294 291L96 493L60 455L257 254L60 54L96 16L294 217L492 16L528 54Z"></path></g></svg></span></td><td class="align_center"><span style="width: 10.0689ptpx;"><svg height="12.4959pt" id="M129" style="vertical-align:-2.92051pt" version="1.1" viewbox="-0.0498162 -9.57539 10.0689 12.4959" width="10.0689pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,.013)"><path d="M782 731H740L476 -79H474L280 352L133 274L151 239L242 286L473 -219L782 731Z"></path></g></svg></span></td></tr><tr><td class="align_left">Multiple clients</td><td class="align_center"><span style="width: 7.75925ptpx;"><svg height="7.35473pt" id="M130" style="vertical-align:-0.3499303pt" version="1.1" viewbox="-0.0498162 -7.0048 7.75925 7.35473" width="7.75925pt" 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="M528 54L331 254L528 455L492 493L294 291L96 493L60 455L257 254L60 54L96 16L294 217L492 16L528 54Z"></path></g></svg></span></td><td class="align_center"><span style="width: 10.0689ptpx;"><svg height="12.4959pt" id="M131" style="vertical-align:-2.92051pt" version="1.1" viewbox="-0.0498162 -9.57539 10.0689 12.4959" width="10.0689pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,.013)"><path d="M782 731H740L476 -79H474L280 352L133 274L151 239L242 286L473 -219L782 731Z"></path></g></svg></span></td><td class="align_center"><span style="width: 7.75925ptpx;"><svg height="7.35473pt" id="M132" style="vertical-align:-0.3499303pt" version="1.1" viewbox="-0.0498162 -7.0048 7.75925 7.35473" width="7.75925pt" 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="M528 54L331 254L528 455L492 493L294 291L96 493L60 455L257 254L60 54L96 16L294 217L492 16L528 54Z"></path></g></svg></span></td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Streaming media-based covert communication systems.</div>

Security and Communication Networks

tab5

Table 5

Table 5: A Survey of Key Technologies for Constructing Network Covert Channel 