Title: Bandwidth efficient buyer-seller watermarking protocol

Authors: Zhongqiu Xu; Liangju Li; Haibo Gao

Addresses: Department of Academic Affairs Office, Hunan International Economics University, Changsha 410205, Hunan, China ' Department of Continuation Education, Hunan International Economics University, Changsha 410205, Hunan, China ' College of Computer Science and Technology, Hunan International Economics University, Changsha 410205, Hunan, China

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.

Keywords: digital watermarking; buyer-seller protocol; digital copyright protection; oblivious transfer; multicast; bandwidth efficiency; multimedia content; pirated copies; symmetric encryption; cryptography; security.

DOI: 10.1504/IJICS.2012.051079

International Journal of Information and Computer Security, 2012 Vol.5 No.1, pp.1 - 10

Received: 08 May 2021
Accepted: 12 May 2021

Published online: 14 Dec 2012 *

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