适用于无线传感器网络密钥管理LEAP方案的改进与优化

Improvement and Optimization of LEAP Scheme for Key Management in Wireless Sensor Networks

针对无线传感器网络密钥管理LEAP方案的缺点,提出一种通过引入秘密信息验证节点合法性的方法,并利用Diffie-Hellman算法生成节点间配对密钥来保障密钥的安全.由安全性、节点开销等方面对原LEAP方案与改进方案进行对比分析结果表明,改进方案在计算代价上略有增加,但提高了网络的安全性.

The method to use secret information to verify the legitimacy of the nodes was presented and Diffie-Hellman algorithm was used to generate the shared key for guaranteeing the security of the key so as to overcome the weakness of localized encryption and authentication protocol.The analysis of the original scheme and the improved scheme from the security and node overhead shows that the computational cost is slightly increased in the improved scheme,but the security of the network is improved.