Design and Applications of Hierarchical Key Management Schemes

• Main Authors: Ting-Ying Lee, 李定穎
• Other Authors: Chu-Hsing Lin
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/10605275460660308737

碩士 === 東海大學 === 資訊工程與科學系 === 92 === In this thesis, we do deep research and discussion to the hierarchical key management structure including of Lin’s discrete logarithm method proposed in 1997 and a lot of scholar’s suggestion and improved methods. We also apply it and smart card cooperatively on video on demand (VOD) system to carry out content protection, video classification and user management mechanisms. But because the smart card is the equipment of low computational ability, the operation amount in the VOD system must be quite low. So, we also propose a hierarchical key management method based on quadratic residues theorem. The main operation amount of this method is just a modular multiplication. Therefore, we reduce the operation amount that smart card need to deal with successfully.