Preventing the falsified data injection attack through multiple relay network

Abstract: A relay network is a broad class of network topology commonly used in networks, where the source and destination are interconnected by means of some nodes. In such a network the source and destination cannot communicate to each other directly because the distance between the source and destination is greater than the transmission range of both of them, hence the need for intermediate node(s) to relay. The problem of detecting malicious relay nodes in single source, multi-relay networks has been studied in the literature for different relaying strategies. Relay nodes in apply network coding while those in and follow the decode-and-forward protocol. The authors consider a peer-to-peer (P2P) network in which peers receive and forward a linear combination of the exogenous data packets.
To check the integrity of the received packets, a signature vector is generated at the source node and broadcasted to all nodes where it is used to check the integrity of the received packets. In and several information theoretic algorithms for mitigating falsified data injection effects are proposed. The network model used in these works is composed of a single source, multiple intermediate nodes which apply network coding. We consider a multiple access relay network where multiple sources send independent data to a single destination through multiple relays, which may inject falsified data into the network. To detect the malicious relays and discard (erase) data from them, tracing bits are embedded in the information data at each source node.

Keywords: Multiple Access Relay Network, Tradeoff Between Reliability And Security, Falsified Data Injection Attack