It has strongpoint of symmetry encryption scheme such as encryption speed and encrypt intensity, but also has advantage of public key encryption scheme on key distribution and key management.

该方法兼有两类加密体制的优点：既有对称密码加密体制的加密速度快，强度高的优点，又拥有公钥密码体制在密钥分发与管理上的优势。

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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。

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