Study Of Security Anonymous Routing For Mobile Ad Hoc Networks

Mobile Ad hoc networks (MANETs) are finding ever-increasing applications in both military and civilian systems due to their self-configuration and self-maintenance capabilities. Many of these applications are security scenarios, law enforcement, and rescue missions. As a result, security in MANETs has drawn intensive attention recently.A lot of security routing protocols appear for Ad hoc networks, but data encryption can protect the content exchanged between nodes, and routing information may reveal the identities of communicating nodes and their relationships.Traffic analysis is a security attack where an adversary observes network traffic in order to infer sensitive information about the identities of communicating parties and traffic patterns. The leakage of such information is often devastating in security-sensitive scenarios. For example, an unexpected change of the traffic pattern in a military network may indicate a forthcoming action, a chain of commands, or a state change of network alertness. It may also reveal the locations of command centers, which will enable the adversaries to launch the pinpoint attacks on them. Traffic analysis is"invisible"and difficult to detect. It is, therefore, important to design countermeasures against such malicious traffic analysis. This thesis includes three major contributions.First, we introduce the mobile Ad hoc network technology and network security mechanism. In addition, we also present the anonymous communication technology and several attack models.Second, this paper details the several anonymous routing protocols for MANETs and analyzes its anonymity property, evaluates the computational overhead and routing efficiency. Based on the comprehensive anonymity analysis, this paper abstracts a general principle of design on the anonymous routing protocols for MANETs.Last, according to the pairing technique, we proposed the novel security anonymous routing protocols for mobile wireless Ad hoc networks. The new protocols nicely fulfill the routing task without disclosing the real identities of participaty nodes without the high overhead.