NeTS: Medium: Collaborative Research: Secure Networking Using Network Coding

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。本项目从网络编码的角度确定了网络保密性的基本限制，并将该理论应用于提高对等网络和无线网络的安全保障。随着网络编码作为有线和无线网络的重要策略而日益突出，该项目确定了使用网络编码的优势和漏洞。随后，该工作开发了一种设计方法，该方法利用了优势，同时仔细地补偿了漏洞。这个项目分析了外部攻击和内部攻击下的网络。具体来说，开发了编码机制来对抗外部窃听者。此外，密码学和信息论工具的组合用于对抗网络上的内部修改攻击。然后将结果用于两个案例研究：对无线网状网络的窃听攻击和对P2P内容分发系统的污染攻击。安全的网络编码系统，一旦被很好地理解，可以极大地影响网络的设计和部署方式。几乎每种网络设置（无线、有线或异构）都可以在其设计中受益于改进的弹性（除了吞吐量等其他性能优势之外）。案例研究的目的是帮助将理论原理转化为实际算法。研究团队包括一名行业成员，这将有助于我们的研究理念从理论到实践的转变。该小组将通过传统的学术场所、网络和每个合作机构的当地社区传播其研究结果。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This project determines the fundamental limits of network secrecy from a network coding perspective, and then applies this theory to improve security guarantees in peer-to-peer and wireless networks. As network coding gains prominence as an important strategy for both wired and wireless networks, the project identifies both the advantages and vulnerabilities from using network coding. Subsequently, the effort develops a design methodology that exploits the advantages while carefully compensating for the vulnerabilities. This project analyzes networks under both outsider and insider attacks. Specifically, coding mechanisms are developed to combat an external eavesdropper. Also, a combination of cryptographic and information-theoretic tools are used to combat internal modification attacks on the network. The results are then used in two case studies: eavesdropper attacks on wireless mesh networks and pollution attacks on P2P content distribution systems. Secure network coded systems, once well understood, can greatly impact how networks are designed and deployed. Nearly every network setting (wireless, wired or heterogeneous) can benefit in terms of improved resilience (in addition to other performance benefits such as throughput) in its design. Case studies in this effort are designed to help transition the theoretical principles developed into practical algorithms. The research team includes an industry member which will aid in transitioning our research ideas from theory to practice. The team will disseminate its findings through traditional scholarly venues, through the web and to the local community at each partner institution.