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In this paper, the authors explore the security merits of network coding and potential trade-offs with the widely accepted throughput benefits, especially in multicast scenarios. In particular, they propose a novel Source Authentication using Network Coding (SANC) scheme. Towards this objective, they propose a general framework for embedding the authentication information within the network coding Global Encoding Vector. First, they illustrate the proposed concept using a simple mapping function. Second, they present a detailed security analysis that reveals the security merits of the proposed scheme, contrasted against two baseline schemes. Finally, they present simulation results pertaining to the network coding performance.
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