Secure group communications using key graphs
IEEE/ACM Transactions on Networking (TON)
Computation-Efficient Multicast Key Distribution
IEEE Transactions on Parallel and Distributed Systems
Information Processing Letters
Key distribution protocol for secure multicast with reduced communication delay
AMT'11 Proceedings of the 7th international conference on Active media technology
IEEE Wireless Communications
Key management and distribution for secure multimedia multicast
IEEE Transactions on Multimedia
Efficient key distribution schemes for secure media delivery in pay-TV systems
IEEE Transactions on Multimedia
Efficient Key Distribution for Access Control in Pay-TV Systems
IEEE Transactions on Multimedia
Flexible-Pay-Per-Channel: A New Model for Content Access Control in Pay-TV Broadcasting Systems
IEEE Transactions on Multimedia
MDS array codes with independent parity symbols
IEEE Transactions on Information Theory
Key distribution based on hierarchical access control for conditional access system in DTV broadcast
IEEE Transactions on Consumer Electronics
A scalable key distribution scheme for conditional access system in digital pay-TV system
IEEE Transactions on Consumer Electronics
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The distribution of keys in a Conditional Access System (CAS) takes large computation time, since the number of keys to be updated is high. Moreover, it is necessary to send the keys securely to the authorized group members. In this paper, we propose a new Key Distribution Protocol that reduces the computation time taken to compute the re-keying information whenever there is a change in the group membership. In the proposed system, when the Group Centre needs to refresh a new group key, only few encryption/decryption operations are needed. Two primary operations that are performed by the service providers and members are XOR and multiplication, in which computation load is very less. From the experiments carried out in this work, it has been observed that the computation time is reduced in this work when compared with the existing systems.