%0 Journal Article
%T Secret Communication with Feedback
%A Deniz Gunduz
%A D. Richard Brown III
%A H. Vincent Poor
%J Mathematics
%D 2008
%I arXiv
%X 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.
%U http://arxiv.org/abs/0812.1713v1