NeTS-NOSS: Secure, Robust and DoS-Resilient Code Dissemination in Wireless Sensor Networks

无线传感器网络是监测关键基础设施、在危险环境中获取数据和军事行动等广泛应用的理想选择。传感器节点在通过无线链路部署后，通常需要重新编程。该项目旨在研究通过无线链路对传感器节点进行安全、健壮和拒绝服务弹性的远程编程。首先，提出了一种结合主动传输和NACK机制的可靠性机制，有效地容忍了代码分发过程中的丢包；其次，在该方法中集成了高效的认证机制，以保证分发的代码图像的完整性。第三，本项目开发了弱认证机制来缓解潜在的DoS攻击，目的是消耗传感器节点的资源(特别是电池功率)。第四，本项目扩展了上述技术，以在混合传感器网络中提供安全、主动健壮和拒绝服务弹性代码分发，其中既有通过高容量无线链路(例如802.11)连接的高端节点(例如，PDA、Intel Mote2)，也有通过低功率无线链路(例如，802.15.4)连接的低端节点(例如，MicaZ微尘)。为了实现对这些技术的透彻理解，本项目在北卡罗来纳州立大学名为WiSeNeT的混合无线传感器网络试验台上实现了所有提出的技术并对它们进行了评估。

Wireless sensor networks are ideal candidates for a wide range ofapplications, such as monitoring of critical infrastructures, dataacquisition in hazardous environments, and military operations. It isusually necessary to reprogram sensor nodes after they are deployedthrough wireless links. This project is aimed at investigating secure,robust, and DoS-resilient remote programming of sensor nodes throughwireless links. First, this project develops a novel reliabilitymechanism that integrates proactive transmission and NACK mechanismsto tolerate packet losses during code dissemination efficiently.Second, this research integrates efficient authentication mechanismsinto this approach to guarantee the integrity of disseminated codeimages. Third, this project develops weak authentication mechanismsto mitigate the potential DoS attacks aimed at consuming the resources(particularly the battery power) of sensor nodes. Fourth, this projectextends the above techniques to provide secure, proactively robust,and DoS-resilient code dissemination in hybrid sensor networks, wherethere are both high-end nodes (e.g., PDAs, Intel mote 2) connectedthrough high-capacity wireless links (e.g., 802.11) and low-end nodes(e.g., MicaZ motes) connected via low-power wireless links (e.g.,802.15.4). To achieve a thorough understanding of these techniques,this project implements all the proposed techniques and evaluates themin a hybrid wireless sensor network test-bed named WiSeNeT at NorthCarolina State University.