A Lightweight Buyer-Seller Watermarking Protocol

<table>Identifying the “honest” buyer by the
seller. The seller tests the buyers with the watermark <math id="M213" 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>

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fig2

Figure 2

Figure 2: A Lightweight Buyer-Seller Watermarking Protocol 