Bandwidth efficient buyer-seller watermarking protocol
by Zhongqiu Xu; Liangju Li; Haibo Gao
International Journal of Information and Computer Security (IJICS), Vol. 5, No. 1, 2012

Abstract: Digital watermarking has been used widely for the purposes of copyright protection and copy deterrence for multimedia content. In a forensic watermarking architecture, a buyer-seller watermarking protocol can enable a seller to identify a traitor from a pirated copy, while preventing the seller from framing an innocent buyer. Existing schemes are inefficient in practice for their high bandwidth usage. This paper proposes a buyer-seller watermarking protocol that is efficient from the bandwidth usage point of view. First, multicast that is an efficient transport technology for one-to-many communication is exploited, which can reduce the bandwidth usage significantly. Second, symmetric encryption instead of public-key encryption is performed on the multimedia content, which also can reduce the complexity and communication cost.

Online publication date: Sat, 30-Aug-2014

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