On the capacity of multiple unicast sessions in undirected graphs
IEEE/ACM Transactions on Networking (TON) - Special issue on networking and information theory
Network coding theory: single sources
Communications and Information Theory
Optimal linear network coding design for secure unicast with multiple streams
INFOCOM'10 Proceedings of the 29th conference on Information communications
P-coding: secure network coding against eavesdropping attacks
INFOCOM'10 Proceedings of the 29th conference on Information communications
Secure network coding against wiretapping and Byzantine attacks
EURASIP Journal on Wireless Communications and Networking
Reputation-based networked control with data-corrupting channels
Proceedings of the 14th international conference on Hybrid systems: computation and control
Survey Cyber security in the Smart Grid: Survey and challenges
Computer Networks: The International Journal of Computer and Telecommunications Networking
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In wireless networks, an attacker can tune a receiver and tap the communication between two nodes. Whether or not some meaningful information is obtained by tapping a wireless connection depends the security protocols used. One may use cryptographic techniques to secure the communications. In this article we discuss an alternate way of securing the communication between two nodes. We provide a simple security protocol against a wiretapping attack based on the network topology. Although we study the problem from a theoretical perspective, our protocol is easily implementable. Our protocol is at least as secure as any other protocol against these attacks. We show that an attacker can get any meaningful information only by wiretapping those links that are necessary for the communication between the sender and the receiver. We use techniques from network encoding. Our protocol works for any network topology, including cycle networks. We note here that acyclicity is the main assumption in much of the network encoding literature.