无线传感器网络中基于混沌的密钥预分配方案

Key pre-distribution scheme based on chaos in wireless sensor network

为了提高无线传感器网络的安全性,降低能耗,延长网络的生命周期,提出了混沌密钥预分配方案。该方案利用混沌的遍历性来增强密钥的抗破译性,利用混沌的初值敏感性来保证加密密钥在通信过程中可安全地动态改变。分析表明该方案能提供较大的密钥空间,而且密钥协商所需的通信和计算的开销均较小,具有较强的实用性。

To increase the security of Wireless Sensor Network （WSN）, reduce the energy consumption and prolong the lifecycle of the system, a chaos scheme of key pre-distribution was put forward. In this scheme, the ergodicity of chaos was used to avoid the key of being decrypted, and chaos initial value sensitivity was used to ensure the key could be altered safely in communications. The analysis shows that the scheme can provide larger key space and the cost in communication and computation are smaller, thus it has stronger practicality.