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Date Submitted:
07/11/06
Hits: 58 Rating:  based on 0 votes
Selectively Traceable AnonymityAdded by Papergrl
Description:
Anonymous communication can, by its very nature, facilitate socially unacceptable behavior. In this paper we present one approach to dealing with abuse: selective traceability. A system for anonymous communication is said to be selectively traceable if it allows the tracing of a message's sender after a set of sensible conditions have been met (e.g., both the FBI and the ACLU have agreed to trace the message, or 90% of the users agree that the message should be traced, etc.). We introduce general techniques to transform a large class of anonymous communication protocols (including most of those that have been proposed so far, such as DC-Nets, Mix-Nets, and their derivatives) into selectively traceable anonymous communication protocols. We also present more efficient modifications to two existing anonymous communication protocols that do not affect the asymptotic efficiency of the underlying schemes. Our resulting protocols are provably secure against malicious adversaries.
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