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1·Due to node resource constraints, research focuses on achieving minimum path length of indirect pairwise key construction.

由于节点资源受限，如何尽可能减小建立间接对偶密钥的路径长度是该类算法的研究焦点之一。

2·Analyzing the schemes of pairwise key management in sensor networks, comparing the various schemes of key management, and proposing the strongpoint and shortcoming of every scheme.

分析了传感器网络中的对密钥管理方案，比较了各种对密钥管理方案的优缺点。

3·Finally, this paper presents three new key predistribution schemes based on the analysis above and the purpose of improving the probability of establish pairwise key and resilient.

最后以对上述密钥管理方案的分析为基础，以提高建立对密钥的概率和抗捕获性为目的设计了三种新的密钥预分配方案。