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In this paper, we propose a joint digital watermarking protocol for the multiparty multilevel DRM architecture using Garner's algorithm for the Chinese remainder theorem (CRT). Our protocol exploits the incremental nature of the computation of CRT by the Garner's algorithm. The proposed joint watermarking protocol embeds a single watermark signal into the content while taking care of the various security concerns such as proof of involvement in the distribution chain, nonrepudiation of thedoi:10.1109/icme.2009.5202668 dblp:conf/icmcs/ThomasEDK09 fatcat:ma7xpnryiradtirbulowuszfbe