Tor: The Second-Generation Onion Router

作者：Roger Dingledine，Nick Mathewson，Paul Syverson

全文：http://www.torproject.org/svn/trunk/doc/design-paper/tor-design.pdf

摘要：We present Tor, a circuit-based low-latency anonymous communication service. This second-generation Onion Routing system addresses limitations in the original design by adding perfect forward secrecy, congestion control, directory servers,integrity checking, configurable exit policies, and a practical design for location-hidden services via rendezvous points. Tor works on the real-world Internet, requires no special privileges or kernel modifications, requires little synchronizationor coordination between nodes, and provides a reasonable tradeoff between anonymity, usability, and efficiency. We briefly describe our experiences with an international network of more than 30 nodes. We close with a list of open problems in anonymous communication