aDTN - Undetectable Communication in Wireless Delay-tolerant Networks (Working Draft)

TL;DR

This paper proposes a wireless delay-tolerant communication system that ensures user privacy by making all communications undetectable to external and internal adversaries, leveraging a mix network adaptation without relying on broken encryption.

Contribution

It introduces a novel undetectable communication system for wireless networks that maintains privacy even against internal adversaries, based on a group-based mix network approach.

Findings

Achieves undetectability of users and messages against external adversaries.

Ensures undetectability of non-compromised groups against internal adversaries.

Provides a privacy-preserving communication framework for wireless delay-tolerant networks.

Abstract

This document describes a best-effort delay-tolerant communication system that protects the privacy of users in wireless ad-hoc networks by making their communication undetectable. The proposed system is a wireless broadcast-based adaptation of mix networks where each user belongs to at least one group it trusts, and each group acts as a mix node. Assuming encryption is not broken, it provides undetectability of all users and messages against external adversaries, as well as undetectability of users and messages in non-compromised groups against internal adversaries.