无线传感器网络的密码体制适用性探讨

The Applicability of Key Cryptosystem in Wireless Sensor Networks

分析包括MD类、SHA类、ECC加密、ECC认证以及哈希链等算法在无线传感器网络中的应用,并权衡安全性和时空等因素,提出了扩展哈希链的概念。最后在MICAZ节点上,基于TinyOS和TinyECC椭圆曲线密码库,对上述算法进行仿真分析,证明了扩展哈希链的优势。同时,通过硬件实验探讨了扩展哈希链在无线传感器网络环境中的适合长度。

The algorithms include MD, SHA, ECC, ECDSA and Hash Chain Mechanism is analyzed in the application of WSN, meanwhile by considering the security and the memory/time cost etc., the extended Hash Chain Mechanism is developed. Finally in MICAz nodes, based on TinyOS and TinyECC library, these algorithms are used in simulation environment to verify the advantage of the extended Hash Chain Mechanism. By hardware experiment, the suitable length of Hash Chain in WSN is discussed.