TightRope: Towards Optimal Load-balancing of Paths in Anonymous Networks
TightRope: Towards Optimal Load-balancing of Paths in Anonymous Networks
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TightRope:实现匿名网络中路径的最佳负载平衡
DOI:
10.1145/3267323.3268953
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Mitra, Sayan
中科院分区:
文献类型:
--
作者:
Darir, Hussein;Sibai, Hussein;Borisov, Nikita;Dullerud, Geir;Mitra, Sayan
We study the problem of load-balancing in path selection in anonymous networks such as Tor. We first find that the current Tor path selection strategy can create significant imbalances. We then develop a (locally) optimal algorithm for selecting paths and show, using flow-level simulation, that it results in much better balancing of load across the network. Our initial algorithm uses the complete state of the network, which is impractical in a distributed setting and can compromise users' privacy. We therefore develop a revised algorithm that relies on a periodic, differentially private summary of the network state to approximate the optimal assignment. Our simulations show that the revised algorithm significantly outpe forms the current strategy while maintaining provable privacy guarantees.
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DOI:
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期刊:
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