Paper 2025/1948 Original: eprint.iacr.org/2025/1948 ↗
Feedback Lunch: Deep Feedback Codes for Wiretap Channels
Abstract
We consider reversely-degraded wiretap channels, for which the secrecy capacity is zero if there is no channel feedback. This work focuses on a seeded modular code design for the Gaussian wiretap channel with channel output feedback, combining universal hash functions for security and learned feedback-based codes for reliability to achieve positive secrecy rates. We study the trade-off between communication reliability and information leakage, illustrating that feedback enables agreeing on a secret key shared between legitimate parties, overcoming the security advantage of the wiretapper. Our findings also motivate code designs for sensing-assisted secure communication, to be used in next-generation integrated sensing and communication methods.
Metadata
- Available format(s)
PDF- Category
- Foundations
- Publication info
- Preprint.
- History
- 2025-10-18: last updated
- 2025-10-18: published
- Short URL
- https://ia.cr/2025/1948
- License
- https://creativecommons.org/licenses/by-nc-nd/4.0/
BibTeX
@misc{cryptoeprint:2025/1948,
author = {Yingyao Zhou and Natasha Devroye and Onur Günlü},
title = {Feedback Lunch: Deep Feedback Codes for Wiretap Channels},
howpublished = {Cryptology {ePrint} Archive, Paper 2025/1948},
year = {2025},
url = {https://eprint.iacr.org/2025/1948}
}