摘要： 移动Ad Hoc网络是一种新型的移动多跳无线网络。在网络中构建组密钥协商协议时应尽量减少节点的资源开销。该文提出一种新的多层组密钥协商协议，MTKA-ECC协议。该协议在多层组模型结构上，采用椭圆曲线密码体制实施密钥协商和分配，使得节点在密钥协商过程中具有低计算开销与低通信开销的优势。与GDH, TGDH组密钥协商协议相比，该协议有效地降低了节点在密钥协商过程中的计算和通信开销，适用于移动Ad Hoc网络。

关键词: Ad Hoc网络, 组密钥协商, 椭圆曲线

Abstract: Mobile Ad Hoc network is a new-style mobile multihop wireless network. The costs of the nodes resource should be minimized whenever constructing the group key agreement protocol in the Ad Hoc network. This paper proposes a novel group key agreement protocol MTKA-ECC based on a multi tier structure. In this protocol, the elliptic curve cryptosystem is employed to establish and allocate group key. So the protocol has some advantages that are the cost of computation and communication on node in key agreement process is low. Compared with TGDH and GDH group key agreement protocols, this protocol decreases both the computational overhead and communication costs and adapts to the mobile Ad Hoc network.

Key words: Ad Hoc network, group key agreement, elliptic curve

中图分类号: 

• TP393.08