Abstract
In view of the characteristics of limited energy and dynamic change in Ad Hoc network,an identity-based group key agreement scheme was presented.The topology was in a structure composed by clusters,and allowed the synchronous execution of multi-party key agreement protocols based on pairings.The number of cluster members did not affect the key agreement,and it did not require interactivity during the key agreement.It provided the authentication and dynamics.In addition,the scheme was proved semantics secure under the Decisional Bilinear Diffie-Hellman(DBDH) problem.At last,compared with the previous schemes,the proposed scheme has advantages in terms of negotiation rounds and authentication.
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