On key agreement in wireless sensor networks based on radio transmission properties
On key agreement in wireless sensor networks based on radio transmission properties
复制标题
基于无线传输特性的无线传感器网络密钥协商
DOI：
10.1109/npsec.2009.5342245
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
J. Schmitt
中科院分区：
文献类型：
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作者：
Matthias Wilhelm;I. Martinovic;J. Schmitt
最近，一些研究成果证明，无线通信不仅是一个安全的负担。其不可预测和不稳定的性质也可以用来对付对手，并用于增强传统的安全协议，特别是密钥协商。在本文中，我们的灵感来自于这样的密钥协商方案的有前途的研究，但旨在释放他们的一些限制性假设。我们证明了我们的计划在性能受限的无线传感器网络的可行性。其中心思想是使用两个收发器之间的无线信道响应的互易性作为相关的随机变量。在几个频率上这样做会产生一个随机向量，从中提取共享秘密。通过采用纠错技术，我们能够控制我们的密钥协商协议的保密性和鲁棒性之间的权衡。为了评估其适用性，该协议在MicaZ传感器节点上实现，并在室内环境中进行分析。此外，这些实验提供了对现实信道行为、可用信息熵的深入了解，并显示出高达95%的成功密钥协议率。
Recently, several research contributions have justified that wireless communication is not only a security burden. Its unpredictable and erratic nature can also be turned against an adversary and used to augment conventional security protocols, especially key agreement. In this paper, we are inspired by promising studies on such key agreement schemes, yet aim for releasing some of their limiting assumptions. We demonstrate the feasibility of our scheme within performance-limited wireless sensor networks. The central idea is to use the reciprocity of the wireless channel response between two transceivers as a correlated random variable. Doing so over several frequencies results in a random vector from which a shared secret is extracted. By employing error correction techniques, we are able to control the trade-off between the amount of secrecy and the robustness of our key agreement protocol. To evaluate its applicability, the protocol is implemented on MicaZ sensor nodes and analyzed in indoor environments. Further, these experiments provide insights into realistic channel behavior, available information entropy, and show a high rate of successful key agreements, up to 95 %.