Multicast routing in datagram internetworks and extended LANs
ACM Transactions on Computer Systems (TOCS)
Multicast tree generation in networks with asymmetric links
IEEE/ACM Transactions on Networking (TON)
Diffie-Hellman key distribution extended to group communication
CCS '96 Proceedings of the 3rd ACM conference on Computer and communications security
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)
Simple and fault-tolerant key agreement for dynamic collaborative groups
Proceedings of the 7th ACM conference on Computer and communications security
Scalable multicast security with dynamic recipient groups
ACM Transactions on Information and System Security (TISSEC)
On the Security of ElGamal Based Encryption
PKC '98 Proceedings of the First International Workshop on Practice and Theory in Public Key Cryptography: Public Key Cryptography
A survey of key management for secure group communication
ACM Computing Surveys (CSUR)
Proxy Encryptions for Secure Multicast Key Management
LCN '03 Proceedings of the 28th Annual IEEE International Conference on Local Computer Networks
New directions in cryptography
IEEE Transactions on Information Theory
A public key cryptosystem and a signature scheme based on discrete logarithms
IEEE Transactions on Information Theory
Scalable secure one-to-many group communication using dual encryption
Computer Communications
Scalable and efficient approach for secure group communication
ISCIT'09 Proceedings of the 9th international conference on Communications and information technologies
A Multi-service Group Key Management Scheme for Stateless Receivers in Wireless Mesh Networks
Mobile Networks and Applications
Proxy encryption based secure multicast in wireless mesh networks
Journal of Network and Computer Applications
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A secure multicast framework should only allow authorized members of a group to decrypt received messages; usually, one ''group key'' is shared by all approved members. However, this raises the problem of ''one affects all'', whereby the actions of one member affect the whole group. Many researchers have solved the problem by dividing a group into several subgroups, but most current solutions require key distribution centers to coordinate secure data communications between subgroups. We believe this is a constraint on network scalability. In this paper, we propose a novel framework to solve key management problems in multicast networks. Our contribution is threefold: (1) We exploit the ElGamal cryptosystem and propose a technique of key composition. (2) Using key composition with proxy cryptography, the key distribution centers used in secure multicast frameworks are eliminated. (3) For key composition, the framework is designed to resist node failures and support topology reconstruction, which makes it suitable for dynamic network environments. Without reducing the security or performance of proxy cryptography, we successfully eliminate the need for key distribution centers. Our analysis shows that the proposed framework is secure, and comparison with other similar frameworks demonstrates that it is efficient in terms of time and space complexity. In addition, the costs of most protocol operations are bounded by constants, regardless of a group's size and the number of branches of transit nodes.