Department of Computer Science and Engineering, University of Bridgeport, 126 Park Ave, Bridgeport, CT 06604, USA.
Sensors (Basel). 2018 Oct 21;18(10):3569. doi: 10.3390/s18103569.
Modern wireless sensor networks have adopted the IEEE 802.15.4 standard. This standard defines the first two layers, the physical and medium access control layers; determines the radio wave used for communication; and defines the 128-bit advanced encryption standard (AES-128) for encrypting and validating the transmitted data. However, the standard does not specify how to manage, store, or distribute the encryption keys. Many solutions have been proposed to address this problem, but the majority are impractical in resource-constrained devices such as wireless sensor nodes or cause degradation of other metrics. Therefore, we propose an efficient and secure key distribution protocol that is simple, practical, and feasible to implement on resource-constrained wireless sensor nodes. We conduct simulations and hardware implementations to analyze our work and compare it to existing solutions based on different metrics such as energy consumption, storage overhead, key connectivity, replay attack, man-in-the-middle attack, and resiliency to node capture attack. Our findings show that the proposed protocol is secure and more efficient than other solutions.
现代无线传感器网络采用了 IEEE 802.15.4 标准。该标准定义了前两层，即物理层和介质访问控制层；确定了用于通信的无线电波；并定义了用于加密和验证传输数据的 128 位高级加密标准（AES-128）。然而，该标准并未指定如何管理、存储或分发加密密钥。已经提出了许多解决方案来解决这个问题，但大多数在资源受限的设备（如无线传感器节点）中不切实际，或者会导致其他指标的劣化。因此，我们提出了一种高效、安全的密钥分发协议，该协议简单、实用，并且可以在资源受限的无线传感器节点上实现。我们进行了仿真和硬件实现来分析我们的工作，并根据不同的指标（如能耗、存储开销、密钥连通性、重放攻击、中间人攻击以及对节点捕获攻击的弹性）与现有解决方案进行了比较。我们的研究结果表明，所提出的协议是安全的，并且比其他解决方案更高效。
