Collaborative Research: CT- ISG Key Generation from Physical Layer Characteristics in Wireless Networks

提案名称：CT-ISG：协作研究：无线网络中物理层特征的密钥生成机构：康奈狄格大学摘要：日期：08/05/08本项目致力于开发一类新的密钥生成和更新算法，通过利用物理层特征来保护无线网络。该方法的基础是确定一对节点之间高度相关（尽管不相同）的可测量数量的无线信道。利用这种相关性，该项目开发了在各种对抗模型下获取共享密钥的算法。这解决了一个关键的问题领域，因为无线链路的广播性质为对手提供了自然的窃听和干预能力，因此保护无线链路对任何无线网络的安全都是至关重要的。该项目承担了多个协议的设计、实现、分析和测试，并阐明了信道特性与使用它们的加密协议之间的关系。它还研究了计算和通信成本之间的权衡，并量化了假设各种对抗模型的密钥生成和更新协议所达到的安全级别。该项目更广泛的影响在于，它有可能使无线通信更加安全，同时避免加密的成本（计算和组织成本）。考虑到无线互联网络的增加以及普通用户目前携带的大量无线设备，无线链路的安全性成为保护计算机系统安全的最关键方面之一。计算的减少也将转化为能源使用的减少，这对电池或替代动力系统很重要。在教育方面，该项目将展示信号处理、计算机安全、算法和密码学等方面的一个有吸引力的组合，并将为学生的参与提供丰富的问题

Proposal Title: CT-ISG: Collaborative Research: Key Generation from PhysicalLayer Characteristics in Wireless NetworksInstitution: University of ConnecticutAbstract Date: 08/05/08This project focuses on the development of a new class of secret key generation andrenewal algorithms for securing wireless networks by taking advantage of physicallayer characteristics. The basis of the approach is the identification of measurablequantities of the wireless channel between a pair of nodes that are highly correlatedexclusively between them (albeit not identical). Capitalizing on this correlation, theproject develops algorithms for obtaining a shared key under various adversarialmodels.This addresses a critical problem area as the broadcast nature of a wireless linkprovides a natural eavesdropping and intervention capability to an adversary and thus itfollows that securing a wireless link is essential to the security of any wireless network.This project undertakes the design, implementation, analysis and testing of severalprotocols and clarifies the relationship between the channel characteristics and thecryptographic protocols that use them. It also investigates the trade-offs betweencomputational and communication costs, and quantifies the level of security achievedby the key generation and renewal protocols assuming various adversarial models.The broader impact of the project is in the potential of making wireless communicationsmore secure while avoiding costs (both computational and organizational) ofcryptography. Given the increased wireless internetworking and the multitude ofwireless enabled devices presently carried by an average user, the security of thewireless link becomes one of the most critical aspects of securing computer systems.The reduction in the computation also will translate to a reduction in energy use,important to battery or alternative powered systems. Educationally, the project willpresent an attractive combination of aspects of signal processing, computer security,algorithms and cryptography and will offer a wealth of problems for student engagement