Secure Broadcasting Using the Secure Lock
IEEE Transactions on Software Engineering
Iolus: a framework for scalable secure multicasting
SIGCOMM '97 Proceedings of the ACM SIGCOMM '97 conference on Applications, technologies, architectures, and protocols for computer communication
Secure group communications using key graphs
IEEE/ACM Transactions on Networking (TON)
Key management for restricted multicast using broadcast encryption
IEEE/ACM Transactions on Networking (TON)
Key Agreement in Dynamic Peer Groups
IEEE Transactions on Parallel and Distributed Systems
Batch rekeying for secure group communications
Proceedings of the 10th international conference on World Wide Web
Kronos: A Scalable Group Re-Keying Approach for Secure Multicast
SP '00 Proceedings of the 2000 IEEE Symposium on Security and Privacy
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In this paper, we propose a new group-rekeying method for changing the multicast group key matrix-mask-based group-rekeying (MMGR). The main aim of our rekeying method is to solve the rekeying problem that arises when some group members leave the group. In MMGR, the group controller constructs the rekeying message using a numerical matrix, and the group members apply secret bit masks on the matrix to get the group key. MMGR does not need computationally expensive encryption of the group key before transmission and hence eliminates the need to decrypt it after receiving the rekeying message. In MMGR, rekeying message construction and group key retrieval processes need only simple operations. The computational cost of the rekeying server is low, and the computational cost of the group members is low and constant regardless of the rekeying message size.