Engineering Commons^™

A Coding Enabled Anonymity Network, Saikrishna Gumudavally

ETD Archive

An onion routing based anonymous communication system is developed to address timing analysis attacks, a common limitation of many contemporary anonymous systems including Tor. Timing analysis based attacks gained importance because simple payload check and packet inspection attacks are avoided by encrypting packets. Timing information gathered at one part of the network is correlated with information gathered at other parts to break the anonymity. Network coding, a recently developed packet forwarding technique, is used to disrupt timing attacks. The system uses a multicast tree of onion routers (OR) through which the packets are relayed to desired destinations. Packets from different …