移动自组网中的恶意节点对路由协议的安全和隐匿具有严重威胁.现在针对安全路由协议的研究很多,但是很少有人涉及匿名性问题,匿名路由协议能够实现节点身份、位置和通信关系的隐匿,在军事和其它机密通信领域中具有重要意义.首先对匿名路由协议面临的攻击行为进行分析,介绍其定义、分类和匿名性评价方法,然后概括性的介绍已有的典型匿名路由协议,比较其匿名性和安全性,最后对以后研究的问题和方向作了总结和展望.%Malicious nodes in mobile ad hoc networks (MANETs) impose great threat on the security and anonymity of routing protocols. Although there is a huge amount of work in secure routing protocols, few focuses on anonymity problems recent years. Anonymous routing protocols are significantly important in military and other confidential areas because of their capability of hiding the node's identity, location and communication relations. In this paper, a detailed survey of existing literature on anonymous routing protocols is presented. Attack behaviois in anonymous routing protocols are first identified, and the strict definition, taxonomy and anonymity evaluation metrics are also introduced. Then several typical anonymous routing protocols are generally described and their performance on security and anonymity are analyzed and compared as well. At last, some main problems and possible directions for future research are summarized and discussed.
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