中文摘要：

无线传感器网络中节点电池电量有限、节点计算能力及存储能力受限,使得现有的大部分群组密钥交换技术不适用于无线传感器网络。针对该问题,提出一种动态的可认证群组密钥交换协议。采用双线性映射技术实现无线传感器网络中节点之间的群组密钥交换。该协议具有可认证性,避免群组密钥交换过程中遭到欺骗攻击及中间人攻击;具有动态性,适用于无线传感器网络节点动态部署;在双线性计算Diffie-Hellman（bilinear computation Diffie-Hellman,BCDH）困难性假设下是可证安全的。分析结果表明,该协议具有较高的安全性和较好的性能。

英文摘要：

Wireless sensor networks have such obvious characteristics as energy-constraint and dynamic topology,computing power and storage capacity are limited.For the problem that most of the existing group key agreement technique can not be used in wireless sensor networks,a dynamic authenticated group key agreement protocol was proposed.Multi-linear mapping technology was used to achieve group key agreement among cluster head nodes and bilinear mapping technology was used to achieve group key agreement among ordinary nodes in wireless sensor networks.The protocol is authentic,so that it can defense the spoofing attacks and man-in-the-middle attacks.Also the protocol is dynamic,so that it can adapt to the replacement of sensor nodes in wireless sensor network.Under the difficulty assumption of BCDH,the proposed protocol is secure.Extensive security and performance analysis shows that the proposed scheme has the advantages in security,computation consumption and communication consumption.