关键词: 飞行器自组网络, 群组密钥管理, 密钥合并/分裂操作, 前向后向性安全, 身份

Abstract:

Flying Ad Hoc network has wide application prospect in the future. However, it has some significant characteristics including frequent topology change, high speed mobility and constrained capability, so some interactive key agreement protocols increase time delay among members of flying networks for security targets, and their message complexity of rekeying is related to the network scale. To deal with the problem, this paper proposes a non-    interactive dynamic group key management scheme (NIGKM). In the proposed scheme, a public encryption key corresponds to a plurality of secret decryption keys which have key independence, and those decryption keys bind entities identities, only the public key must be updated in rekeying for group key operations, however non-leaving or non-joining members still keep their secret decryption keys unchanged. In the efficiency aspect, as there is not interaction among non-leaving or non-joining members, the message cost is reduced and the 1-affect-n problem is solved in rekeying, implicit authentication further reduces latency without interaction. In the security aspect, the forward/backward security is guaranteed. Therefore, the proposed scheme is suitable to the frequent topology change and high speed mobility flying Ad Hoc networks.

Key words: flying Ad Hoc network, group key management, key merging/partition operation, forward/backward  , security, identity