JOURNAL OF MULTIMEDIA (JMM)
ISSN : 1796-2048
Volume : 4    Issue : 3    Date : June 2009

A Secure and Efficient Buyer-Seller Watermarking Protocol
Yuping Hu and Jun Zhang
Page(s): 161-168
Full Text:
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Abstract
The Digital watermarking technology has become increasing popular in the protection digital
copyright. However, in the practical application, the watermarking algorithms should be combined
with a secure copyright protection protocol to solve the copyright protection problems completely. In
this paper, a novel buyer-seller watermarking protocol is proposed for piracy tracing, in which a
memoryless Watermark Certification Authority (WCA) can offer a number of watermarks for a buyer
simultaneously, avoiding itself being involved in each digital transaction operated between the buyer
and the seller. Besides, in order to guarantee the anonymity of the buyer, the WCA can provide the
buyer with an encrypted digital certificate and have it submitted directly to the seller by the buyer. In
addition, the proposed protocol also can resolve other problems, such as the customer right
problem, the binding attack problem, the anonymity problem, the conspiracy problem, the dispute
problem. The analyses indicate that the proposed protocol is secure and practical.

Index Terms
copyright protection,digital watermarking, secure protocol