Digital Watermarking based Key Distribution Method for Pay-TV System

• Main Authors: Ying-Hong Ke, 柯盈宏
• Other Authors: 謝文雄
• Format: Others
• Language: en_US
• Online Access: http://ndltd.ncl.edu.tw/handle/88545885894300464030

碩士 === 國立中山大學 === 資訊工程學系研究所 === 88 === Conventional key distribution methods using on Pay-TV system emphasize on the method’s refinement in order to reduce the quantity of the keys distributed over network. This paper brings up the manner using digital watermarking technique to hide the cryptographic keys into routine encrypted video file without any increment of video file size for the economy of network bandwidth. The experimental results show that the proposed method works well in image quality and economical key distribution.