目錄 - ç ”ç©¶ç™¼å±•è™• - 稻江科技暨管理學院

稻 江 學 報 第 五 卷 第 一 期
A Hierarchical Access Control Multicast System
1 Ming-Chang Wu, 2 Jyh-Horng Wen, 3 Yan Tsang Wu
1 Assistant Professor, Department of Network System, Toko University
2 Professor, Department of Electrical Engineering, Tunghai University
3 Graduate Student, Department of Network System, Toko University
Abstract
When many different data are delivered by transmitter to receivers, the multicasting way is more efficient than
multiple unicasting way. Hence, the transmitter can reduce transmission overhead and network bandwidth necessity.
This is the benefit of the multicasting way.
In an organization, the multicast model is usually used to convey the data. The members can obtain the
multicast data via a secure communication network and they store it. The higher class can acquire the multicast data
of lower class with a way of the access control, but the lower class does not obtain the multicast data of the higher
class with this way. Obviously, this is an access control problem between the higher class and the lower class. In such
environment, it is formed naturally a hierarchical access control multicast system.
In the hierarchical access control multicast system, we proposed an elliptic curve method for encryption and
decryption in order to establish a hierarchical access control multicast system. We do the security analysis to this
system and the analysis results show that the system is secure.
Keywords: Elliptic curve; Information security; Secure filter; Access control; Multicast system
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