Fu-Shen Ho

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—To provide secure media delivery in pay-TV systems, a large number of messages are exchanged for key updates in the conventional key distribution schemes. This is inefficient and costly when the client side (set-top box) uses a smart card with limited computing power. In this paper, we present three key distribution schemes for channel protection and(More)
The advantage of the ID-based authentication protocols over public-key based protocols is that authentication can be performed by simply knowing the identity of a party. Meanwhile, Public Key Infrastructure (PKI) provides a suite of excellent security and user management mechanisms that can be easily deployed to the Internet. In this paper, we present an(More)
This paper presents a generic electronic payment model which is intended for a multi-merchant transaction, in which more than one merchant (the retailer, multiple resellers and content providers) are involved in the distribution of electronic contents. With our payment model, every involved merchant will be notified to verify the license information of a(More)
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