Secure group communications using key graphs
IEEE/ACM Transactions on Networking (TON)
A method for obtaining digital signatures and public-key cryptosystems
Communications of the ACM
The LSD Broadcast Encryption Scheme
CRYPTO '02 Proceedings of the 22nd Annual International Cryptology Conference on Advances in Cryptology
A survey of key management for secure group communication
ACM Computing Surveys (CSUR)
A scalable key-management scheme with minimizing key storage for secure group communications
International Journal of Network Management
LITESET/A++: A New Agent-Assisted Secure Payment Protocol
CEC '04 Proceedings of the IEEE International Conference on E-Commerce Technology
CEC '04 Proceedings of the IEEE International Conference on E-Commerce Technology
CEC '05 Proceedings of the Seventh IEEE International Conference on E-Commerce Technology
Efficient key distribution schemes for secure media delivery in pay-TV systems
IEEE Transactions on Multimedia
A public key cryptosystem and a signature scheme based on discrete logarithms
IEEE Transactions on Information Theory
A scalable key distribution scheme for conditional access system in digital pay-TV system
IEEE Transactions on Consumer Electronics
A smart-card-based conditional access subsystem separation scheme for digital TV broadcasting
IEEE Transactions on Consumer Electronics
A survey of proposals for an alternative group communication service
IEEE Network: The Magazine of Global Internetworking
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E-service providers usually encrypt each E-service message to prevent unauthorized receivers from reading the content and they change the encryption keys periodically for security reasons. In some one-to-many E-services, like global positioning systems (GPS) or news feeds systems, it is not reasonable to ask customers to stay on-line all the time and save the changes of keys to the system. If registered customers are not on-line, they will miss the re-keying messages and will not be able to decrypt any E-service content. We propose a practical revocation scheme for one-to-many E-services with stateless and service diversity properties. Our scheme reduces the key-storage requirement of service providers to a constant size and customers are not required to be on-line constantly (stateless). Also, service providers can provide various E-services for their customers at the same time (service diversity) and customers can request any E-service or cancel it whenever needed.