Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: ShorTor: Improving Tor Network Latency via Multi-hop Overlay Routing   We present ShorTor, a protocol for reducing latency on the Tor network.
ShorTor uses multi-hop overlay routing, a technique typically employed by
content delivery networks, to influence the route Tor traffic takes across the
internet. ShorTor functions as an overlay on top of onion routing-Tor's
existing routing protocol and is run by Tor relays, making it independent of
the path selection performed by Tor clients. As such, ShorTor reduces latency
while preserving Tor's existing security properties. Specifically, the routes
taken in ShorTor are in no way correlated to either the Tor user or their
destination, including the geographic location of either party. We analyze the
security of ShorTor using the AnoA framework, showing that ShorTor maintains
all of Tor's anonymity guarantees. We augment our theoretical claims with an
empirical analysis. To evaluate ShorTor's performance, we collect a real-world
dataset of over 400,000 latency measurements between the 1,000 most popular Tor
relays, which collectively see the vast majority of Tor traffic. With this
data, we identify pairs of relays that could benefit from ShorTor: that is, two
relays where introducing an additional intermediate network hop results in
lower latency than the direct route between them. We use our measurement
dataset to simulate the impact on end users by applying ShorTor to two million
Tor circuits chosen according to Tor's specification. ShorTor reduces the
latency for the 99th percentile of relay pairs in Tor by 148 ms. Similarly,
ShorTor reduces the latency of Tor circuits by 122 ms at the 99th percentile.
In practice, this translates to ShorTor truncating tail latencies for Tor which
has a direct impact on page load times and, consequently, user experience on
the Tor browser.

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The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: plasm-ph
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The categories of this paper are: math
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The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
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The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: cond-mat
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The categories of this paper are: nlin
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The categories of this paper are: patt-sol
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The categories of this paper are: stat
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The categories of this paper are: nucl-th