Untagging Tor: A Formal Treatment of Onion Encryption

  title={Untagging Tor: A Formal Treatment of Onion Encryption},
  author={Jean Paul Degabriele and Martijn Stam},
  journal={IACR Cryptology ePrint Archive},
Tor is a primary tool for maintaining anonymity online. It provides a low-latency, circuit-based, bidirectional secure channel between two parties through a network of onion routers, with the aim of obscuring exactly who is talking to whom, even to adversaries controlling part of the network. Tor relies heavily on cryptographic techniques, yet its onion encryption scheme is susceptible to tagging attacks (Fu and Ling, 2009), which allow an active adversary controlling the first and last node of… CONTINUE READING
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