Survey of Anonymous Routing Protocols for Mobile Ad Hoc Networks
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 behaviors 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.