Secret Communication with Feedback

Deniz Gunduz; D. Richard Brown III; H. Vincent Poor

doi:10.1109/isita.2008.4895417

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arXiv · 0812.1713

Secret Communication with Feedback

Deniz Gunduz·D. Richard Brown III·H. Vincent Poor

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Abstract

Secure communication with feedback is studied. An achievability scheme in which the backward channel is used to generate a shared secret key is proposed. The scenario of binary symmetric forward and backward channels is considered, and a combination of the proposed scheme and Maurer's coding scheme is shown to achieve improved secrecy rates. The scenario of a Gaussian channel with perfect output feedback is also analyzed and the Schalkwijk-Kailath coding scheme is shown to achieve the secrecy capacity for this channel.

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Deniz Gunduz, D. Richard Brown III, H. Vincent Poor. 2008-12-09. Secret Communication with Feedback. https://doi.org/10.1109/isita.2008.4895417

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