Hao Zhuo, Zhong Sheng, Yu Nenghai
MicroStrategy, Hangzhou, China.
ScientificWorldJournal. 2013 May 20;2013:935604. doi: 10.1155/2013/935604. Print 2013.
A number of key agreement schemes based on wireless channel characteristics have been proposed recently. However, previous key agreement schemes require that two nodes which need to agree on a key are within the communication range of each other. Hence, they are not suitable for multihop wireless networks, in which nodes do not always have direct connections with each other. In this paper, we first propose a basic multihop key agreement scheme for wireless ad hoc networks. The proposed basic scheme is resistant to external eavesdroppers. Nevertheless, this basic scheme is not secure when there exist internal eavesdroppers or Man-in-the-Middle (MITM) adversaries. In order to cope with these adversaries, we propose an improved multihop key agreement scheme. We show that the improved scheme is secure against internal eavesdroppers and MITM adversaries in a single path. Both performance analysis and simulation results demonstrate that the improved scheme is efficient. Consequently, the improved key agreement scheme is suitable for multihop wireless ad hoc networks.
最近已经提出了许多基于无线信道特性的密钥协商方案。然而，先前的密钥协商方案要求需要就密钥达成一致的两个节点彼此在通信范围内。因此，它们不适用于多跳无线网络，在这种网络中节点并不总是相互直接连接。在本文中，我们首先为无线自组织网络提出了一种基本的多跳密钥协商方案。所提出的基本方案能够抵御外部窃听者。然而，当存在内部窃听者或中间人（MITM）对手时，这个基本方案并不安全。为了应对这些对手，我们提出了一种改进的多跳密钥协商方案。我们表明，改进后的方案在单一路径上对内部窃听者和MITM对手是安全的。性能分析和仿真结果都表明改进后的方案是高效的。因此，改进后的密钥协商方案适用于多跳无线自组织网络。
