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摘要: 基于LU矩阵的密钥预分配方案是无线传感器网络(WSN)进行密钥管理的有效方法,但它存在通信密钥不能正确建立和通信开销大的缺陷。为此,引入了密钥认证机制,提高了密钥协商的安全性和成功的几率;并对密钥协商过程进行优化,如减少发送无关信息。分析表明,相对于原LU方案,带认证的LU方案将密钥协商过程中的平均通信量降低了16.7%。最后给出Sun Spot 传感器上的实现方案及其性能分析。