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

• DOI: 10.1049/cje.2020.02.020
• Publication Date: 2020-05-26T18:17:53Z
• Authors: Qikun Zhang; Bingli Wang; Xiaosong Zhang; Junling Yuan; Ruifang Wang
• Keywords: Group key; Traceability; Forward secrecy

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