TC: Small: Collaborative Research: Exploiting Network Dynamics for Secret Key Generation

TC：小型：协作研究：利用网络动态生成密钥

• 批准号: 1321223
• 负责人: Lifeng Lai
• 金额: $ 17.59万
• 依托单位: Worcester Polytechnic Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-11-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1321223&HistoricalAwards=false
• 关键词: TC; Small; Collaborative; Research; Exploiting

Key management in wireless networks is a very challenging problem because of the unreliable transmission medium, the lack of network infrastructure, and stringent energy and complexity limitations at terminals. Recently, there has been increased interest in exploiting physical layer dynamics to generate keys. However, existing schemes exploit only the channel dynamics in the point-to-point channel or basic small wireless systems, but not other rich dynamics inherent to multiuser wireless networks. Furthermore, current studies focus mainly on the pairwise key agreement problem, and did not address issues arising from user interactions in networks. This project develops practical key generation schemes for large scale networks, which 1) fully exploit rich opportunities inherent to network dynamics, and 2) properly address issues arising from interaction among multiple users in networks. Topics including unicast and/or multicast key generation, oblivious relay-assisted key generation, and secret sharing among multiple users are investigated. The goal of this project is to design transmission protocols and algorithms that have engineering impact and practical feasibility. Furthermore, these protocols and algorithms are implemented and tested on a testbed. This project also has strong education components. In addition to providing thesis topics for graduate students, this project provides hands-on lab opportunities for undergraduate education on communication security.

由于传输介质不可靠、网络基础设施缺乏以及终端严格的能量和复杂性限制，无线网络中的密钥管理是一个非常具有挑战性的问题。最近，人们对利用物理层动态生成密钥越来越感兴趣。然而，现有方案仅利用点对点信道或基本小型无线系统中的信道动态，而不利用多用户无线网络固有的其他丰富动态。此外，当前的研究主要集中在成对密钥协商问题上，并没有解决网络中用户交互产生的问题。 该项目为大规模网络开发实用的密钥生成方案，1）充分利用网络动态固有的丰富机会，2）正确解决网络中多个用户之间交互所产生的问题。研究的主题包括单播和/或多播密钥生成、不经意的中继辅助密钥生成以及多个用户之间的秘密共享。该项目的目标是设计具有工程影响力和实际可行性的传输协议和算法。此外，这些协议和算法是在测试台上实现和测试的。该项目还具有很强的教育成分。除了为研究生提供论文主题外，该项目还为通信安全本科教育提供实践实验室的机会。