作者：George Danezis, Claudia Diaz
全文：http://homes.esat.kuleuven.be/~gdanezis/anonSurvey.pdf
摘要：We present an overview of the field of anonymous communications, from its establishment in 1981 from David Chaum to today. Key systems are presented categorized according to their underlying principles: semi-trusted relays, mix systems, remailers, onion routing, and systems to provide robust mixing. We include extended discussions of the threat models and usage models that different schemes provide, and the trade-offs between the security properties offered and the communication characteristics different systems support.
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