At last, Shared key is adopted to maintain the security of message transmitting. Finally, performance evaluation of routing algorithm and secure mechanism is showed in NS2 under different topologies.

最后，使用网络仿真工具ns2在多种网络场景下分别对提出的路由算法和安全机制进行了性能评估。

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Provide technical assistance and advice to, and training of, national teams responsible for curriculum change and development processes, in the context of national curriculum making, implementation, monitoring and evaluation processes through the use of diversified content and promotion of unversally shared values and with an expanded vision of educational quality and innovation.

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