Secure Network Coding for Wireless Mesh Networks: Threats, Challenges, and Directions

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In recent years, network coding has emerged as a new communication paradigm that can significantly improve the efficiency of network protocols by requiring intermediate nodes to mix packets before forwarding them. Recently, several real-world systems have been proposed to leverage network coding in wireless networks. Although the theoretical foundations of network coding are well understood, a real-world system needs to solve a plethora of practical aspects before network coding can meet its promised potential. These practical design choices expose network coding systems to a wide range of attacks. Authors identify two general frameworks (inter-flow and intra-flow) that encompass several network coding-based systems proposed in wireless networks.