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    Please use this identifier to cite or link to this item: http://ir.nknu.edu.tw/ir/handle/987654321/11980


    題名: Efficient Key Distribution for Access Control in Pay-TV Systems
    Authors: 王釋毅
    Shyh-Yih Wang;Chi-Sung Laih
    貢獻者: 光電與通訊工程學系
    Keywords: Access control;hierarchy;key distribution;pay-TV
    Date: 2008-04
    Issue Date: 2010-11-19 16:49:56 (UTC+8)
    Abstract: The conditional access system (CAS) is an essential part of digital pay-TV systems for controlling access to the program services. Conventionally, due to the restrictions of bandwidth and computational capability, a CAS only supports period subscription services that are charged on a monthly basis. In this paper, based on the concept of hierarchical key assignment, we propose three key distribution schemes for the access control of pay-TV systems. With these schemes, a CAS can support more charging strategies for service providers, such as adopting a smaller charging unit and allowing a subscription of any subset of channels with little communication and computational overhead. In addition, the piracy management problem can also be dealt with easily.
    關聯: IEEE Transactions on Multimedia / vol.10, no.3, pp.480-492, DOI: 10.1109/TMM.2008.917417
    Appears in Collections:[光電與通訊工程學系] 期刊論文
    [光通系] 王釋毅

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