Exploring Loose Routing in Mix-Nets for Enhanced Anonymity
Dive into the world of mix-networks and the concept of loose routing to potentially increase anonymity in standard mix networks. Learn about the benefits, downsides, and future prospects of implementing this innovative approach.
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Presentation Transcript
Loose Routing in Mix-Nets Mitchell Artin MitchManiaLabs.com
Approach Can we use loose routing in a mix network to increase anonymity of a standard mix network? Can we defeat n-1 attacks? Standard mix network Sender picks route of mixes, encrypts for each mix, sends packet, all mixes follow this route Loose routing Mixes may not follow the route chosen by the sender If sender choses to route with N mixes, message will be routed with at least N mixes, maybe more!
Standard Route Alice Mix 1 Mix 2 Bob
Loose Route Alice Mix 1 flips a coin, gets a 1, picks a new next hop, encrypts message for mix 3 Mix 1 Mix 3 flips a coin, gets a 0, uses original next hop Mix 3 Mix 2 flips a coin, gets a 0, uses original next hop (destination) Mix 2 Bob
Downsides Increased delays Depending on the coin we use (could be incredibly biased) messages may see significantly increased delays
More Work to Be Done So far I have researched and discussed this topic with network engineers at UF Plan to implement this overlay network in python as a proof-of-concept
References Chaum, David. "Untraceable Electronic Mail, Return Addresses and Digital Pseudonyms." Communications of the ACM (1981): 84-88. Web. Serjantov, Andrei, Roger Dingledine, and Paul Syverson. "From a Trickle to a Flood: Active Attacks on Several Mix Types." (2002): n. pag. The Free Haven Project. Web. Newman-Wolfe, Richard. "High Level Prevention of Traffic Analysis." Computer Security Applications Conference (1991): 102-09. Web.
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