CRYPTO '93 Proceedings of the 13th annual international cryptology conference on Advances in cryptology
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)
A Novel High-Order Tree for Secure Multicast Key Management
IEEE Transactions on Computers
Using Trapdoor Permutations in a Complete Subtree Method for Broadcast Encryption
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Efficient communication-storage tradeoffs for multicast encryption
EUROCRYPT'99 Proceedings of the 17th international conference on Theory and application of cryptographic techniques
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Broadcast encryption is an efficient and secure method to allow a user to be able to communicate securely with multiple receivers in an insecure broadcast environment. Previously, scholars usually applied tree structures to design multicast key management schemes, in which the distributed key was used to encrypt the transmitted message. However, in order to achieve forward secrecy and backward secrecy, previous tree-structure-based approaches had to conduct the rekeying process when a member joined or left a multicast group. However, the rekeying process usually requires that other members change their cryptographic keys. Consequently, this proved to be inconvenient and impractical. In this paper, we propose an efficient multicast key management scheme to solve this problem. Compared with previous tree-structure-based multicast key management schemes, the benefits of our scheme include eliminating the rekeying process and reducing the required key storage for each member.