基于可信基站的SPINS协议研究与改进

SPINS安全协议基于可信基站，为无线传感器网络数据传输提供了一套安全的解决方案。通过分析SPINS协议，指出其中存在的不足，并对其进行了三方面的改进，即引入全局密钥、支持网络扩展和加入密钥更新机制。分析表明，改进的方案具有较好的扩展性，能有效支持路由信息的认证，新的密钥更新机制在一定程度上增加了安全性。

Security research and improvement of SPINS protocol

SPINS security protocol, which is based on the trusted base station, provides a solution for wireless sensor networks security. By analyzing the SPINS, this paper pointed out some existing shortages, and gave three improvements:the global key, network expansion, key update. The following analysis shows that, the improvement scheme has good scalability and effectively supports the authentication of routing messages. The new mechanism of key update increases the security level of WSNs to a certain extent.