Communication Breakdown: Modularizing Application Tunneling for Signaling Around Censorship
Paul Vines, Samuel McKay, Jesse Jenter, Suresh Krishnaswamy · Proceedings on Privacy Enhancing Technologies · 2023
We present Raceboat, a novel framework for developing and managing censorship circumvention channels. The Raceboat framework simplifies using signaling channels for low-bandwidth and/or latency-tolerant tasks like bridge distribution and authentication. We further develop a novel decomposition of application tunneling circumvention channels that is well suited to signaling channel usage. This decomposition enables modular components that are reusable across varied channels. We demonstrate the flexibility and extensibility of Raceboat for signaling uses by mixing-and-matching seven different channels.