This paper presents Riposte, a new system for anonymous broadcast messaging. Riposte is the first such system, to our knowledge, that simultaneously protects against traffic-analysis attacks, prevents anonymous denial-of-service by malicious clients, and scales to million-user anonymity sets. To achieve these properties, Riposte makes novel use of techniques used in systems for private information retrieval and secure multi-party computation. For latency-tolerant workloads with many more readers than writers (e.g. Twitter, Wikileaks), we demonstrate that a three-server Riposte cluster can build an anonymity set of 2,895,216 users in 32 hours.
Cite
@article{arxiv.1503.06115,
title = {Riposte: An Anonymous Messaging System Handling Millions of Users},
author = {Henry Corrigan-Gibbs and Dan Boneh and David Mazières},
journal= {arXiv preprint arXiv:1503.06115},
year = {2021}
}
Comments
This is an extended and corrected version of a paper published at the IEEE Symposium on Security and Privacy 2015 ("Oakland 2015")