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Blockchain-Based Dynamic Group Key Agreement Protocol for Ad Hoc Network

Blockchain-Based Dynamic Group Key Agreement Protocol for Ad Hoc Network

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Group key agreement (GKA) is one of the key technologies for ensuring information exchange security among group members. While GKA is widely used in secure multi-party computation, safety of resources sharing, and distributed collaborative computing. It still has some security flaws and limitations. We proposes a Blockchain-based dynamic Group key agreement (BDGKA) protocol. In contrast to prior works, BDGKA differs in several significant ways: 1) anonymous identity authenticationit can prevent privacy leaks; 2) traceability-it can track illegal operating entities; 3) load balancing-it balances computation and communication to each node, avoiding the breakdown of single-point and network bottlenecks. This protocol is proven secure under the hardness assumption of decision bilinear DiffieHellman. The performance analysis shows that it is more efficient than the referred works.

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