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[tor-commits] r24791: {} my abstract for the crypto 2011 talk (in projects/articles: . crypto2011)

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Subject: [tor-commits] r24791: {} my abstract for the crypto 2011 talk (in projects/articles: . crypto2011)
From: Roger Dingledine <arma@xxxxxxxxxxxxxx>
Date: Sat, 28 May 2011 07:16:03 +0000 (UTC)
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Author: arma
Date: 2011-05-28 07:16:03 +0000 (Sat, 28 May 2011)
New Revision: 24791

Added:
   projects/articles/crypto2011/
   projects/articles/crypto2011/crypto2011-tor.bib
   projects/articles/crypto2011/crypto2011-tor.tex
   projects/articles/crypto2011/direct-users-2011-04-01-300-eg-2010-12-01.png
   projects/articles/crypto2011/direct-users-2011-04-01-300-ir-2010-12-01.png
   projects/articles/crypto2011/direct-users-2011-04-01-300-ly-2010-12-01.png
   projects/articles/crypto2011/direct-users-2011-04-01-300-sa-2010-09-01.png
   projects/articles/crypto2011/direct-users-2011-04-01-300-tn-2010-12-01.png
Log:
my abstract for the crypto 2011 talk


Added: projects/articles/crypto2011/crypto2011-tor.bib
===================================================================
--- projects/articles/crypto2011/crypto2011-tor.bib	                        (rev 0)
+++ projects/articles/crypto2011/crypto2011-tor.bib	2011-05-28 07:16:03 UTC (rev 24791)
@@ -0,0 +1,154 @@
+@inproceedings{dingledine2004tor,
+  author = {Roger Dingledine and Nick Mathewson and Paul Syverson},
+  title = {Tor: The Second-Generation Onion Router},
+  booktitle = {Proceedings of the 13th USENIX Security Symposium},
+  year = {2004},
+  month = {August},
+  pages = {303--320},
+}
+
+@inproceedings{mccoy2008shining,
+  title = {Shining Light in Dark Places: Understanding the {Tor} Network},
+  author = {Damon McCoy and Kevin Bauer and Dirk Grunwald and Tadayoshi
+    Kohno and Douglas Sicker},
+  booktitle = {Proceedings of the Eighth Symposium on Privacy Enhancing
+    Technologies (PETS 2008)},
+  year = {2008},
+  month = {July},
+  address = {Leuven, Belgium},
+  pages = {63--76},
+  editor = {Nikita Borisov and Ian Goldberg},
+  publisher = {Springer},
+  series = {Lecture Notes in Computer Science},
+  volume = {5134},
+}
+
+@inproceedings{differential,
+  title = {Differential Privacy},
+  author = {Cynthia Dwork},
+  booktitle = {33rd International Colloquium on Automata, Languages
+and Programming (ICALP)},
+  year = {2006},
+  month = {July},
+  address = {Venice, Italy},
+  pages = {1--12},
+  publisher = {Springer},
+  series = {Lecture Notes in Computer Science},
+  volume = {4052},
+}
+
+@techreport{loesing2009measuring,
+  title = {Measuring the {Tor} Network from Public Directory Information},
+  author = {Karsten Loesing},
+  institution = {2nd Hot Topics in Privacy Enhancing Technologies (HotPETs
+    2009)},
+  year = {2009},
+  month = {August},
+  address = {Seattle, WA, USA},
+}
+
+@inproceedings{loesing2008performance,
+  author = {Karsten Loesing and Werner Sandmann and Christian Wilms and Guido Wirtz},
+  title = {Performance Measurements and Statistics of {Tor} Hidden Services},
+  booktitle = {Proceedings of the International Symposium on Applications and the Internet (SAINT 2008)},
+  month = {July},
+  year = {2008},
+  address = {Turku, Finland},
+  publisher = {IEEE Computer Society}
+}
+
+@inproceedings{lenhard2009performance,
+  title = {Performance Measurements of {Tor} Hidden Services in Low-Bandwidth Access Networks},
+  author = {J{\"o}rg Lenhard and Karsten Loesing and Guido Wirtz},
+  booktitle = {Proceedings of the 7th International Conference on
+    Applied Cryptography and Network Security (ACNS 09), Paris-Rocquencourt, France},
+  month = {June},
+  year = {2009},
+}
+
+@inproceedings{wendolsky2007performance,
+  title = {Performance Comparison of Low-Latency Anonymisation Services from a User Perspective},
+  author = {Rolf Wendolsky and Dominik Herrmann and Hannes Federrath},
+  booktitle = {Proceedings of the Seventh Symposium on Privacy Enhancing Technologies (PET 2007)},
+  pages = {233--253},
+  year = {2007},
+  month = {June},
+  series = {Lecture Notes in Computer Science},
+  publisher = {Springer}, 
+  editor = {Nikita Borisov and Philippe Golle},
+  volume = {4776},
+}
+
+@manual{tor2009dirspec,
+  author = {The Tor Project},
+  title = {Tor directory protocol, version 3},
+  year = {2009},
+  note = {\url{https://git.torproject.org/checkout/tor/master/doc/spec/dir-spec.txt}},
+}
+
+@manual{bridges-spec,
+  author = {The Tor Project},
+  title = {Tor bridges specification},
+  year = {2009},
+  note = {\url{https://git.torproject.org/checkout/tor/master/doc/spec/bridges-spec.txt}},
+}
+
+@inproceedings{murdoch-pet2007,
+  title = {Sampled Traffic Analysis by {I}nternet-Exchange-Level Adversaries}, 
+  author = {Steven J. Murdoch and Piotr Zieli{\'n}ski}, 
+  booktitle = {Proceedings of the Seventh Workshop on Privacy Enhancing Technologies (PET 2007)}, 
+  year = {2007}, 
+  month = {June}, 
+  address = {Ottawa, Canada}, 
+  editor = {Nikita Borisov and Philippe Golle}, 
+  publisher = {Springer}, 
+  series = {LNCS 4776},
+}
+
+@inproceedings{hs-attack06,
+  title = {Locating Hidden Servers}, 
+  author = {Lasse {\O}verlier and Paul Syverson}, 
+  booktitle = {Proceedings of the 2006 IEEE Symposium on Security and Privacy}, 
+  year = {2006}, 
+  month = {May}, 
+  publisher = {IEEE CS}, 
+  www_pdf_url = {http://www.onion-router.net/Publications/locating-hidden-servers.pdf}, 
+  www_section = {Traffic analysis}, 
+}
+
+@misc{colorado-irb-response,
+  author = {Damon McCoy and Kevin Bauer and Dirk Grunwald and Tadayoshi Kohno and Douglas Sicker},
+  title = {Response to Tor Study},
+  note = {\url{http://systems.cs.colorado.edu/mediawiki/index.php/Response_To_Tor_Study}},
+}
+
+@misc{tor-legal-faq,
+  key = "Tor-legal-faq",
+  author = "{Electronic Frontier Foundation}",
+  title = "Tor: Legal {FAQ} for {T}or Server Operators",
+  howpublished = {\url{https://www.torproject.org/eff/tor-legal-faq.html}}
+}
+
+@inproceedings{wecsr10measuring-tor,
+  title = {A Case Study on Measuring Statistical Data in the {T}or Anonymity Network},
+  author = {Karsten Loesing and Steven J. Murdoch and Roger Dingledine},
+  booktitle = {Proceedings of the Workshop on Ethics in Computer Security Research (WECSR 2010)},
+  year = {2010},
+  month = {January},
+  address = {Tenerife, Canary Islands, Spain},
+  publisher = {Springer},
+  series = {LNCS 6054},
+  editor = {Sven Dietrich},
+  howpublished = {\url{https://metrics.torproject.org/papers/wecsr10.pdf}},
+}
+
+@techreport{tor-blocking,
+  title = {Design of a blocking-resistant anonymity system},
+  author = {Roger Dingledine and Nick Mathewson},
+  institution = {The Tor Project},
+  number = {2006-1},
+  year = {2006},
+  month = {November},
+  howpublished = {\url{https://svn.torproject.org/svn/projects/design-paper/blocking.pdf}},
+}
+


Property changes on: projects/articles/crypto2011/crypto2011-tor.bib
___________________________________________________________________
Added: svn:executable
   + *

Added: projects/articles/crypto2011/crypto2011-tor.tex
===================================================================
--- projects/articles/crypto2011/crypto2011-tor.tex	                        (rev 0)
+++ projects/articles/crypto2011/crypto2011-tor.tex	2011-05-28 07:16:03 UTC (rev 24791)
@@ -0,0 +1,113 @@
+\documentclass{llncs}
+\usepackage[cmex10]{amsmath}
+\usepackage{subfigure}
+\usepackage[pdftex]{graphicx}
+\usepackage{graphics}
+\usepackage{color}
+\pagestyle{empty}
+
+%\usepackage[pdftex,%
+% breaklinks=true,%
+% colorlinks=true,%
+% linkcolor=black,%
+% citecolor=black,%
+% urlcolor=black,%
+% bookmarks=false,%
+% pdfpagemode=UseNone,%
+%]{hyperref}
+
+\begin{document}
+\title{Tor and circumvention: lessons learned\\
+(Abstract to go with invited talk)}
+\author{Roger Dingledine}
+\institute{The Tor Project}
+\maketitle
+
+Tor is a free-software anonymizing overlay network that helps people
+around the world use the Internet in safety. Tor's 2500 volunteer relays
+carry almost 10Gb/s of traffic for several hundred thousand users each day.
+
+While many in the
+research community know Tor as the primary fielded system in the anonymous
+communications literature~\cite{dingledine2004tor}, Tor has also played a
+central role in recent
+research on \emph{blocking resistance}. That is, even if an anonymity
+system provides
+great anonymity, a government censor can render it moot by simply
+blocking the relays. In recent years we streamlined Tor's
+network communications to look more like ordinary SSL, and we introduced
+``bridge relays'' that are harder for an attacker to find and block than
+Tor's public relays~\cite{tor-blocking}.
+
+Tor played a key role in several Middle Eastern countries in early
+2011. In this talk I'll walk the audience through how Iran used
+its Nokia DPI boxes to filter SSL flows that used Tor's original Diffie-Hellman
+parameter $p$; the surge in Tor traffic when Egypt blocked Facebook and
+the flatline when they unplugged the net; the continued bad news for
+Libya's Internet; and an intriguing trend in Saudi Arabia. I'll also
+cover current trends in China and Tunisia (not pictured).
+
+\begin{figure}[h]
+\begin{minipage}{0.495\textwidth}
+\includegraphics[width=\linewidth]{direct-users-2011-04-01-300-ir-2010-12-01.png}
+\end{minipage}
+\begin{minipage}{0.495\textwidth}
+\includegraphics[width=\linewidth]{direct-users-2011-04-01-300-eg-2010-12-01.png}
+\end{minipage}
+\begin{minipage}{0.495\textwidth}
+\includegraphics[width=\linewidth]{direct-users-2011-04-01-300-ly-2010-12-01.png}
+\end{minipage}
+\begin{minipage}{0.495\textwidth}
+\includegraphics[width=\linewidth]{direct-users-2011-04-01-300-sa-2010-09-01.png}
+\end{minipage}
+\caption{Estimates of daily Tor clients connecting from each country}
+\end{figure}
+
+The data for these user graphs, along with historical Tor network
+data and ongoing performance statistics, are all available at
+https://metrics.torproject.org/. Our WECSR'10
+paper~\cite{wecsr10measuring-tor} explains our
+aggregation techniques and why we think they're safe---we'd love for you
+to show us that we're wrong. Further, if you're working on Tor-related
+research, please talk to us (https://torproject.org/research)
+so we can explain what's available and help interpret your results.
+
+\subsection*{Some open questions from the anonymity field}
+
+Here are a few examples of open anonymity and blocking-resistance
+problems:
+
+1) How effective is the traffic correlation attack really? Tor's threat
+model assumes that an adversary who can see a traffic flow into the Tor
+network and the corresponding flow out of the Tor network can correlate
+them with high probability and low false positives. Recent results from
+Steven Murdoch~\cite{murdoch-pet2007} show confirmation attacks even when both
+sides only see a small sample of traffic on each side. But how quick
+can the attack actually be in practice, using how little traffic? Are
+there effective padding schemes to make correlation less effective?
+
+2) For various diversity metrics (like entropy), how has the diversity
+of the Tor network changed over time? How robust is it to change or
+attack?{\footnote{https://blog.torproject.org/blog/research-problem-measuring-safety-tor-network}}
+
+3) How can we automatically recognize blocking events---when Tor relays
+are censored at a firewall by destination address or by traffic flow
+characteristics?
+
+4) Clients who are censored from the public Tor relays can use private
+addresses to ``bridge'' into the public Tor network. What strategies
+should we use to give out these addresses such that legitimate users
+get enough addresses but adversaries can't learn too many?
+
+5) How can we make it hard for censors to recognize Tor traffic flows by
+content (e.g.\ distinguishing Tor's handshake from other expected protocols)
+and by traffic characteristics (packet size, volume, and timing)? We need
+\emph{obfuscation} metrics to let us anticipate which protocols will
+blend in better with background traffic or otherwise defeat deep packet
+inspection (DPI) algorithms.
+
+\bibliographystyle{plain} \bibliography{crypto2011-tor}
+\end{document}
+
+\end{document}
+

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