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.
Secret communication with feedback / Gunduz, D.; Brown, R.; Poor, H. V.. - (2008), pp. 1-6. (Intervento presentato al convegno 2008 International Symposium on Information Theory and its Applications, ISITA2008 tenutosi a Auckland, nzl nel 2008) [10.1109/ISITA.2008.4895417].
Secret communication with feedback
D. Gunduz;
2008
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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