Department of Mathematics, National Taiwan UniversityTzeng, JengnanJengnanTzengHwang, Wen-LiangWen-LiangHwangChern, I-LiangI-LiangChern2006-11-142018-06-282006-11-142018-06-282005-02http://ntur.lib.ntu.edu.tw//handle/246246/200611150121832We present an asymmetric watermarking method for copyright protection that uses different matrix operations to embed & extract a watermark. It allows for the public release of all information, except the secret key.We investigate the conditions for a high detection probability, a low false positive probability, & the possibility of unauthorized users successfully hacking into our system. The robustness of our method is demonstrated by the simulation of various attacks.application/pdf1082703 bytesapplication/pdfzh-TWAsymmetric watermarkcopyright protectionjournal articlehttp://ntur.lib.ntu.edu.tw/bitstream/246246/200611150121832/1/4093.pdf