2000 character limit reached
Secret Communication with Feedback (0812.1713v1)
Published 9 Dec 2008 in cs.IT and math.IT
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.
Collections
Sign up for free to add this paper to one or more collections.