01462nas a2200193   4500008004100000245006200041210005900103260000900162300001200171490000600183520083600189653002001025653003301045653002501078653002601103100001101129700001101140856011701151       2011                        eng d00aA practical and secure buyer-seller watermarking protocol0 apractical and secure buyerseller watermarking protocol  c2011  a43 - 470 v93 aDigital watermarking is an emerging technology for combating copyright piracy. In real applications, the transaction between a buyer and a seller is done through a specific watermarking protocol, which enables the seller to successfully identify a traitor from a pirated copy, while preventing the dishonest seller from framing an inno cent buyer. In this paper, we propose a new buyer-seller watermarking protocol. Compared to the previous works, it makes two improvements, which make it more practi cal. First, no third party is introduced and hence, the problem of the seller (or buyer) colludes with a third party to cheat the buyer (or seller) is solved. Second,a double watermark insertion is avoided, and then the final quality of the watermarked content is higher and the result of the watermark detection is more accurate.10aCopy deterrence10aDigital copyright protection10aDigital watermarking10aWatermarking protocol1 aHu, D.1 aLi, Q.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-79960684787&partnerID=40&md5=2a64f864f0b47aac9775c3f7d261c7e0