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中文摘要：
由于无线传感器网络受电源、计算能力、内存容量等方面的限制，传统的基于公钥和可信任的密钥管理方式不再适用。为了进一步提高无线传感器网络的安全连通性，在分析DU Wen-liang等人的group-based节点投放模型的基础上，提出了一种改进的密钥管理方案：多密钥空间与多路径增强相结合的随机密钥预分配方案。结果分析表明，该方案需要较少的内存存储空间，不仅提高了系统的连通性，还降低了节点的被捕获概率。
英文摘要：
Due to limitations of power, computation capability and storage resources , the traditional trusted key management based on the public-key was not suitable for wireless sensor networks. To further enhance the security and connectivity for wireless sensor networks, proposed an improved key management scheme. Introduced the scheme, a random key predistribution using multiple key spaces and multipath key reinforcement was based on group-based deployment model which in the paper of DU Wen-liang. Analysis and simulations show that the scheme has lower memory and communication overheads, better ability against attacks besides good security performance.
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