To Achieve Source Anonymity in Wireless Network Using Network Coding

Abstract

Wireless networks have been widely deployed in the access network area due to
their benefits such as convenience, mobility, and low cost. However, they still suffer from
the main critical issues are lack of security and privacy threats. The Existing privacypreserving techniques such as Onion Routing in which the attackers easy to attack the
messages in intermediate nodes. We propose a Network coding based privacy-preserving
scheme With homomorphic encryption on Global Encoding Vectors (GEVs). It offers two
significant privacy preserving features such as packet flow untraceability and message
content confidentiality. Our objective is to achieve source anonymity by preventing traffic
analysis and flow tracing attacks. With the employment of HEFs (Homomorphic Encryption
Function) to GEVs, the confidentiality of messages is effectively guaranteed which makes
difficult for the attackers to recover the GEVs. Even when some intermediate nodes are
compromised the adversaries still cannot decrypt the GEVs because we employ message
recoding at intermediate nodes based on network coding.