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- W1483037127 abstract "We analyze physical-layer security based on the premise that the coding mechanism for secrecy over noisy channels is tied to the notion of resolvability. Instead of considering capacity-based constructions, which associate to each message a sub-code that operates just below the capacity of the eavesdropper’s channel, we consider resolvability-based constructions, which associate to each message a sub-code that operates just above the resolvability of the eavesdropper’s channel. Building upon the work of Csisz´ ar and Hayashi, we provide further evidence that resolvability is a powerful and versatile coding mechanism for secrecy by developing results that hold for strong secrecy metrics and arbitrary channels. Specifically, we show that, at least for symmetric wiretap channels, random capacity-based constructions fail to achieve the strong secrecy capacity while resolvability-based constructions achieve it. We then leverage resolvability to establish the secrecy-capacity region of arbitrary broadcast channels with confidential messages and a cost constraint for strong secrecy metrics. Finally, we specialize our results to study the secrecy capacity of wireless channels with perfect channel state information, compound and mixed channels, as well as the secret-key capacity of source models for secret-key agreement. By tying secrecy to resolvability, we obtain achievable rates for strong secrecy metrics with simple proofs." @default.
- W1483037127 created "2016-06-24" @default.
- W1483037127 creator A5055689993 @default.
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- W1483037127 date "2011-05-26" @default.
- W1483037127 modified "2023-09-27" @default.
- W1483037127 title "Secrecy from Resolvability" @default.
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