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中文摘要：
无线网络自身的广播特性决定了它更易受到攻击,网络编码的提出为抵御被动窃听攻击提供了新的思路。现有研究方法中,匿名路径建立过程需要很高的复杂性且编码矩阵不完全可逆,提出的新的区域推进机制能够降低匿名路径建立的复杂度,特殊的编码矩阵构造方法能够保证编码矩阵完全可逆和数据包在目的节点的无条件可解码性。分析结果表明,该方案不仅可以达到抵御被动窃听攻击的目的,确保通信的匿名性,而且可以在一定程度上减小通信过程中数据包的大小。
英文摘要：
Wireless network is subject to various security attacks due to the broadcasting feature of its own,the presentation of network coding gives a new idea to resisting passive wiretapping attack. In existing study approaches,the construction process of anonymous path requires very high complexity and the encoding matrices are incompletely invertible. The new area-promotion mechanism proposed in the paper is able to lower the complexity of anonymous path construction,and the special conformation method of encoding matrix can ensure it being completely invertible and ensure the unconditional decodability of the packets at destination code. Analysis result shows that the proposed scheme can reach the goal of resisting the passive wiretapping attacks and guarantee the anonymity of communication. Moreover it is able to decrease the size of packets during the transmission process to a certain degree.
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