A Lightweight Buyer-Seller Watermarking Protocol

<table>Identifying the malicious buyer by the
seller. The seller tests the buyers with the watermark <math id="M221" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi mathvariant="bold">V</mi></mrow></math> according to
(<a href="https://static.hindawi.com/articles/am/volume-2008/905065/figures/#eq2">3</a>).</table>

Advances in Multimedia

fig4

Figure 4

Figure 4: A Lightweight Buyer-Seller Watermarking Protocol 