Algorithms for validating E-tickets in mobile computing environment
Information Sciences: an International Journal
An efficient authentication scheme for access control in mobile pay-TV systems
IEEE Transactions on Multimedia
A ticket based digital rights management model
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
An efficient anonymous authentication protocol for mobile pay-TV
Journal of Network and Computer Applications
Group-oriented channel protection for mobile devices in digital multimedia broadcasting
ISCIS'05 Proceedings of the 20th international conference on Computer and Information Sciences
Enhanced authentication for commercial video services
Security and Communication Networks
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Current pay-TV systems enable service providers to acquire personal data easily, e.g. the customers' TV-watching habits, which can make customers uncomfortable or cause them inconvenience. Although many privacy protection schemes have been proposed, they only protect customer privacy from abuse by outsiders, not the service providers. This paper develops a new conditional access system (CAS) mechanism - "e-ticket" - for pay-TV systems to protect customer privacy from abuse by both outsiders and providers, while protecting both the customers and the providers against double-spending, loss, misuse, and/or stealing of the e-ticket. This article also demonstrates that the combination of the partial blind digital signature and anonymous digital signature makes pay-TV systems more robust and fairer than before.