Abstract
Node privacy in mobile ad hoc networks (MANET) is an important research topic in designing anonymous routing protocols. Many previously published protocols for providing node privacy still leak information about the communication entities and the route by traffic analysis attack. These protocols are also vulnerable to active attacks such as RREQ flooding attacks due to the lack of packet authentication. Therefore, an anonymous secure routing protocol (ASRP) is designed in this work to prevent from traffic analysis attacks. Node identities and locations are also protected in ASRP. Furthermore, symmetric/asymmetric cryptography is adopted to resist passive attacks and a one-hop group key mechanism is adopted to achieve packet authentication for resisting active attacks. The security analysis and simulation study in this work verify the effectiveness of ASRP.