CRYPTO '87 A Conference on the Theory and Applications of Cryptographic Techniques on Advances in Cryptology
A minimal model for secure computation (extended abstract)
STOC '94 Proceedings of the twenty-sixth annual ACM symposium on Theory of computing
Diffie-Hellman key distribution extended to group communication
CCS '96 Proceedings of the 3rd ACM conference on Computer and communications security
Simple and fault-tolerant key agreement for dynamic collaborative groups
Proceedings of the 7th ACM conference on Computer and communications security
Provably authenticated group Diffie-Hellman key exchange
CCS '01 Proceedings of the 8th ACM conference on Computer and Communications Security
Communication-efficient group key agreement
Sec '01 Proceedings of the 16th international conference on Information security: Trusted information: the new decade challenge
Multiparty authentication services and key agreement protocols with semi-trusted third party
Journal of Computer Science and Technology
Group Key Agreement Efficient in Communication
IEEE Transactions on Computers
On the performance of group key agreement protocols
ACM Transactions on Information and System Security (TISSEC)
Provably secure authenticated group Diffie-Hellman key exchange
ACM Transactions on Information and System Security (TISSEC)
Secure distribution of events in content-based publish subscribe systems
SSYM'01 Proceedings of the 10th conference on USENIX Security Symposium - Volume 10
nPAKE+: a tree-based group password-authenticated key exchange protocol using different passwords
Journal of Computer Science and Technology
Efficient re-keying protocols for multicast encryption
SCN'02 Proceedings of the 3rd international conference on Security in communication networks
A New Secure Authenticated Group Key Transfer Protocol
Wireless Personal Communications: An International Journal
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Users of large communication networks often require a multi-party teleconferencing facility. The most common technique for providing secure audio teleconferencing requires the speech of each participant to be returned to clear form in a bridge circuit where it is combined with the speech of the other participants. The combined signal is then re-encrypted for distribution to the conferees. This introduces a security weakness as the bridge works with the clear speech and the cipher keys for all of the participants. In this paper we describe secure conferencing systems in which some of the bridge functions are distributed among the users so that no additional security weakness is introduced. The network conference bridge knows the addresses of the participants and receives and distributes the encrypted speech without modification. The conference system can be used with a number of encryption algorithms and the system is suitable for deployment on digital networks such as ISDN. High quality and robust secure voice communications can be provided with this technique.