Spectrum - High-bandwidth Anonymous Broadcast

Explore a high-bandwidth, metadata-private file broadcasting system called Spectrum in this 16-minute conference talk from NSDI '22. Discover how Spectrum optimizes for scenarios with few broadcasters and many subscribers, significantly improving throughput over previous solutions. Learn about the novel blind access control technique that prevents malicious clients from disrupting broadcasts and the measures taken to protect broadcasters from deanonymization by malicious servers. Examine the implementation and evaluation results, showcasing Spectrum's impressive performance compared to existing cryptographic anonymous communication systems. Gain insights into the system's scalability, cost-effectiveness, and potential applications for whistleblowers and other scenarios requiring anonymous file sharing.

Introduction
Motivation
How can whistleblowers publish anonymously
Spectrum
Blind Message Authentication
Multiple Broadcasters
Client Elimination
Blame Game
Comparison
Evaluation