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Reducing Latency in Tor

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Since the original implementation of the Tor anonymity network, a number of possible improvements have been identified. Of particular interest to us was the insight that weighting node selection probabilities as proportional to the node bandwidth may not be optimal. Building a purely mathematical queuing model, which we justify as being a good representation of the Tor network, we demonstrate that this is indeed the case, and we derive an optimal solution. Finally we investigate some of the possible problems with deploying the solution to Tor directly.

This talk is part of the Computer Laboratory Digital Technology Group (DTG) Meetings series.

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