Tor: The Second-Generation Onion Router

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Tor: The Second-Generation Onion Router (2004)

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by Roger Dingledine , Nick Mathewson , Paul Syverson

Venue:	IN PROCEEDINGS OF THE 13 TH USENIX SECURITY SYMPOSIUM
Citations:	1198 - 33 self

BibTeX

@INPROCEEDINGS{Dingledine04tor:the,
    author = {Roger Dingledine and Nick Mathewson and Paul Syverson},
    title = {Tor: The Second-Generation Onion Router},
    booktitle = {IN PROCEEDINGS OF THE 13 TH USENIX SECURITY SYMPOSIUM},
    year = {2004},
    publisher = {}
}

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Abstract

We present Tor, a circuit-based low-latency anonymous communication service. This second-generation Onion Routing system addresses limitations in the original design. Tor adds perfect forward secrecy, congestion control, directory servers, integrity checking, configurable exit policies, and a practical design for rendezvous points. Tor works on the real-world Internet, requires no special privileges or kernel modifications, requires little synchronization or 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 a dozen hosts. We close with a list of open problems in anonymous communication.

Keyphrases

second-generation onion router integrity checking original design little synchronization dozen host open problem directory server rendezvous point real-world internet reasonable tradeoff congestion control kernel modification circuit-based low-latency anonymous communication service anonymous communication practical design configurable exit policy special privilege international network present tor second-generation onion routing system

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