Secret Communication with Feedback

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.

Presented at the IEEE Int'l Symposium on Information Theory and its Applications (ISITA), Auckland, New Zealand, December 2008

References in corpus (2)

• The Wiretap Channel with Feedback: Encryption over the Channel
• Secure Lossless Compression with Side Information

Cited by in corpus (2)

• Physical Layer Security Protocol for Poisson Channels for Passive Man-in-the-middle Attack
• Noisy Feedback and Loss Unlimited Private Communication