Communication complexity of group key distribution
CCS '98 Proceedings of the 5th ACM conference on Computer and communications security
Key Agreement in Dynamic Peer Groups
IEEE Transactions on Parallel and Distributed Systems
Publish/Subscribe in a mobile enviroment
Proceedings of the 2nd ACM international workshop on Data engineering for wireless and mobile access
Provably authenticated group Diffie-Hellman key exchange
CCS '01 Proceedings of the 8th ACM conference on Computer and Communications Security
Efficient Identity Based Signature Schemes Based on Pairings
SAC '02 Revised Papers from the 9th Annual International Workshop on Selected Areas in Cryptography
Efficient Algorithms for Pairing-Based Cryptosystems
CRYPTO '02 Proceedings of the 22nd Annual International Cryptology Conference on Advances in Cryptology
Dynamic Group Diffie-Hellman Key Exchange under Standard Assumptions
EUROCRYPT '02 Proceedings of the International Conference on the Theory and Applications of Cryptographic Techniques: Advances in Cryptology
Authenticated Multi-Party Key Agreement
ASIACRYPT '96 Proceedings of the International Conference on the Theory and Applications of Cryptology and Information Security: Advances in Cryptology
Round-Optimal Contributory Conference Key Agreement
PKC '03 Proceedings of the 6th International Workshop on Theory and Practice in Public Key Cryptography: Public Key Cryptography
Attack on an ID-based authenticated group key agreement scheme from PKC 2004
Information Processing Letters
Modeling insider attacks on group key-exchange protocols
Proceedings of the 12th ACM conference on Computer and communications security
Errors in computational complexity proofs for protocols
ASIACRYPT'05 Proceedings of the 11th international conference on Theory and Application of Cryptology and Information Security
ID-based authenticated key agreement for low-power mobile devices
ACISP'05 Proceedings of the 10th Australasian conference on Information Security and Privacy
Constant round dynamic group key agreement
ISC'05 Proceedings of the 8th international conference on Information Security
Batch verifications with ID-Based signatures
ICISC'04 Proceedings of the 7th international conference on Information Security and Cryptology
New multiparty authentication services and key agreement protocols
IEEE Journal on Selected Areas in Communications
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Recently, the bilinear pairings such as the Weil and the Tate pairings defined on algebraic curves over a finite field have found applications in the design of cryptographic protocols. One useful application in mobile environments is for secure group communication over a public network. The members in the group need to establish a common group key that will be used to encrypt messages to be broadcast to the group. Furthermore, it is important to update the group key with low computational costs when the members join and leave the group. In this paper, we propose a pairing-based key exchange protocol for dynamic groups. The proposed protocol achieves low communication complexity and provides some computational savings by the batch verification of signatures. We show that the security of our scheme is guaranteed against an active adversary in the random oracle model under the bilinear Diffie-Hellman (BDH) assumption.