An efficient secure communication between set-top box and smart card in DTV broadcasting
ASIACCS '06 Proceedings of the 2006 ACM Symposium on Information, computer and communications security
Secure distribution of heterogeneous multimedia content on the internet
International Journal of Internet Protocol Technology
Group-oriented channel protection for mobile devices in digital multimedia broadcasting
ISCIS'05 Proceedings of the 20th international conference on Computer and Information Sciences
Secure communication in IPTV broadcasting
The Journal of Supercomputing
A hybrid user authentication protocol for mobile IPTV service
Multimedia Tools and Applications
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Interoperability between conditional access (CA) systems and set-top boxes (STB)-CA-STB interoperability-has been an issue from the very beginning of receiver development for digital pay-TV. Interoperability ensures that any service can be received on any (interoperable) STB. The common interface solutions SimulCrypt and MultiCrypt are now standardized. However, these solutions have a number of disadvantages, including the need for service providers to agree on using each other's system, increased bandwidth usage, inflexibility, cost, and limited functionality. This paper describes another solution for CA-STB interoperability, based on downloading interoperable software into the STB. It provides full CA-STB interoperability. Furthermore, it can be introduced relatively easily into future STBs and will require only minimal changes in current CA systems