Fergal Reid (PhD) - Principal Machine Learning Engineer ...

Dandelion++: Lightweight Cryptocurrency Networking with Formal Anonymity Guarantees

Date: 2018-05-28
Author(s): Giulia Fanti, Shaileshh Bojja Venkatakrishnan, Surya Bakshi, Bradley Denby, Shruti Bhargava, Andrew Miller, Pramod Viswanath

Link to Paper

Recent work has demonstrated significant anonymity vulnerabilities in Bitcoin's networking stack. In particular, the current mechanism for broadcasting Bitcoin transactions allows third-party observers to link transactions to the IP addresses that originated them. This lays the groundwork for low-cost, large-scale deanonymization attacks. In this work, we present Dandelion++, a first-principles defense against large-scale deanonymization attacks with near-optimal information-theoretic guarantees. Dandelion++ builds upon a recent proposal called Dandelion that exhibited similar goals. However, in this paper, we highlight simplifying assumptions made in Dandelion, and show how they can lead to serious deanonymization attacks when violated. In contrast, Dandelion++ defends against stronger adversaries that are allowed to disobey protocol. Dandelion++ is lightweight, scalable, and completely interoperable with the existing Bitcoin network. We evaluate it through experiments on Bitcoin's mainnet (i.e., the live Bitcoin network) to demonstrate its interoperability and low broadcast latency overhead.

[1] [n. d.]. AWS Regions and Endpoints. ([n. d.]). http://docs.aws.amazon.com/general/latest/grande.html.
[2] [n. d.]. Bitcoin Core integration/staging tree. ([n. d.]). https://github.com/bitcoin/bitcoin.
[3] [n. d.]. Chainalysis. ([n. d.]). https://www.chainalysis.com/.
[4] [n. d.]. The Kovri I2P Router Project. ([n. d.]). https://github.com/monero-project/kovri.
[5] [n. d.]. Monero. ([n. d.]). https://getmonero.org/home.
[6] 2015. Bitcoin Core Commit 5400ef6. (2015). https://github.com/bitcoin/bitcoin/commit/5400ef6bcb9d243b2b21697775aa6491115420f3.
[7] 2016. reddit/monero. (2016). https://www.reddit.com/Monero/comments/4aki0k/what_is_the_status_of_monero_and_i2p/.
[8] Elli Androulaki, Ghassan O Karame, Marc Roeschlin, Tobias Scherer, and Srdjan Capkun. 2013. Evaluating user privacy in bitcoin. In International Conference on Financial Cryptography and Data Security. Springer, 34–51.
[9] Maria Apostolaki, Aviv Zohar, and Laurent Vanbever. 2016. Hijacking Bitcoin: Large-scale Network Attacks on Cryptocurrencies. arXiv preprint arXiv:1605.07524 (2016).
[10] Krishna B Athreya and Peter E Ney. 2004. Branching processes. Courier Corporation.
[11] Alex Biryukov, Dmitry Khovratovich, and Ivan Pustogarov. 2014. Deanonymisation of clients in Bitcoin P2P network. In Proceedings of the 2014 ACM SIGSAC Conference on Computer and Communications Security. ACM, 15–29.
[12] Alex Biryukov and Ivan Pustogarov. 2015. Bitcoin over Tor isn’t a good idea. In Symposium on Security and Privacy. IEEE, 122–134.
[13] John Bohannon. 2016. Why criminals can’t hide behind Bitcoin. Science (2016).
[14] Shaileshh Bojja Venkatakrishnan, Giulia Fanti, and Pramod Viswanath. 2017. Dandelion: Redesigning the Bitcoin Network for Anonymity. POMACS 1, 1 (2017), 22.
[15] D. Chaum. 1988. The dining cryptographers problem: Unconditional sender and recipient untraceability. Journal of cryptology 1, 1 (1988).
[16] Ramnath K Chellappa and Raymond G Sin. 2005. Personalization versus privacy: An empirical examination of the online consumer’s dilemma. Information technology and management 6, 2 (2005), 181–202.
[17] H. Corrigan-Gibbs and B. Ford. 2010. Dissent: accountable anonymous group messaging. In CCS. ACM.
[18] George Danezis, Claudia Diaz, Emilia Käsper, and Carmela Troncoso. 2009. The wisdom of Crowds: attacks and optimal constructions. In European Symposium on Research in Computer Security. Springer, 406–423.
[19] George Danezis, Claudia Diaz, Carmela Troncoso, and Ben Laurie. 2010. Drac: An Architecture for Anonymous Low-Volume Communications.. In Privacy Enhancing Technologies, Vol. 6205. Springer, 202–219.
[20] R. Dingledine, N. Mathewson, and P. Syverson. 2004. Tor: The second-generation onion router. Technical Report. DTIC Document.
[21] G. Fanti, P. Kairouz, S. Oh, and P. Viswanath. 2015. Spy vs. Spy: Rumor Source Obfuscation. In SIGMETRICS Perform. Eval. Rev., Vol. 43. 271–284. Issue 1.
[22] Giulia Fanti and Pramod Viswanath. 2017. Anonymity Properties of the Bitcoin P2P Network. arXiv preprint arXiv:1703.08761 (2017).
[23] M.J. Freedman and R. Morris. 2002. Tarzan: A peer-to-peer anonymizing network layer. In Proc. CCS. ACM.
[24] Sam Frizell. 2015. Bitcoins Are Easier To Track Than You Think. Time (January 2015).
[25] Adam Efe Gencer and Emin Gün Sirer. 2017. State of the Bitcoin Network. Hacking Distributed, http://hackingdistributed.com/2017/02/15/state-of-the-bitcoin-network/. (February 2017).
[26] S. Goel, M. Robson, M. Polte, and E. Sirer. 2003. Herbivore: A scalable and efficient protocol for anonymous communication. Technical Report.
[27] P. Golle and A. Juels. 2004. Dining cryptographers revisited. In Advances in Cryptology-Eurocrypt 2004.
[28] Ethan Heilman, Leen Alshenibr, Foteini Baldimtsi, Alessandra Scafuro, and Sharon Goldberg. 2016. TumbleBit: An untrusted Bitcoin-compatible anonymous payment hub. Technical Report. Cryptology ePrint Archive, Report 2016/575.
[29] TE Jedusor. 2016. Mimblewimble. (2016).
[30] Philip Koshy. 2013. CoinSeer: A Telescope Into Bitcoin. Ph.D. Dissertation. The Pennsylvania State University.
[31] Philip Koshy, Diana Koshy, and Patrick McDaniel. 2014. An analysis of anonymity in bitcoin using p2p network traffic. In International Conference on Financial Cryptography and Data Security. Springer, 469–485.
[32] Greg Maxwell. 2013. CoinJoin: Bitcoin privacy for the real world. In Post on Bitcoin Forum.
[33] Dave McMillen. 2017. Mirai IoT Botnet: Mining for Bitcoins? SecurityIntelligence (April 2017).
[34] Sarah Meiklejohn, Marjori Pomarole, Grant Jordan, Kirill Levchenko, Damon McCoy, Geoffrey M Voelker, and Stefan Savage. 2013. A fistful of bitcoins: characterizing payments among men with no names. In Proceedings of the 2013 conference on Internet measurement conference. ACM, 127–140.
[35] Marc Mezard and Andrea Montanari. 2009. Information, physics, and computation. Oxford University Press.
[36] Andrew Miller, James Litton, Andrew Pachulski, Neal Gupta, Dave Levin, Neil Spring, and Bobby Bhattacharjee. 2015. Discovering Bitcoin’s public topology and influential nodes. (2015).
[37] Prateek Mittal, Matthew Wright, and Nikita Borisov. 2013. Pisces: Anonymous communication using social networks. In NDSS. ACM.
[38] Satoshi Nakamoto. 2008. Bitcoin: A peer-to-peer electronic cash system. (2008).
[39] Micha Ober, Stefan Katzenbeisser, and Kay Hamacher. 2013. Structure and anonymity of the bitcoin transaction graph. Future internet 5, 2 (2013), 237–250.
[40] Larry L Peterson and Bruce S Davie. 2007. Computer networks: a systems approach. Elsevier.
[41] P. C. Pinto, P. Thiran, and M. Vetterli. 2012. Locating the source of diffusion in large-scale networks. Physical review letters 109, 6 (2012), 068702.
[42] Fergal Reid and Martin Harrigan. 2013. An analysis of anonymity in the bitcoin system. In Security and privacy in social networks. Springer, 197–223.
[43] Michael K Reiter and Aviel D Rubin. 1998. Crowds: Anonymity for web transactions. ACM Transactions on Information and System Security (TISSEC) 1, 1 (1998), 66–92.
[44] Dorit Ron and Adi Shamir. 2013. Quantitative analysis of the full bitcoin transaction graph. In International Conference on Financial Cryptography and Data Security. Springer, 6–24.
[45] Tim Ruffing, Pedro Moreno-Sanchez, and Aniket Kate. 2014. CoinShuffle: Practical decentralized coin mixing for Bitcoin. In European Symposium on Research in Computer Security. Springer, 345–364.
[46] Eli Ben Sasson, Alessandro Chiesa, Christina Garman, Matthew Green, Ian Miers, Eran Tromer, and Madars Virza. 2014. Zerocash: Decentralized anonymous payments from bitcoin. In Symposium on Security and Privacy. IEEE, 459–474.
[47] Alexander Schrijver. 2002. Combinatorial optimization: polyhedra and efficiency. Vol. 24. Springer Science & Business Media.
[48] Rob Sherwood, Bobby Bhattacharjee, and Aravind Srinivasan. 2005. P5: A protocol for scalable anonymous communication. Journal of Computer Security 13, 6 (2005), 839–876.
[49] Jelle van den Hooff, David Lazar, Matei Zaharia, and Nickolai Zeldovich. [n. d.]. Scalable Private Messaging Resistant to Traffic Analysis. ([n. d.]).
[50] Zhaoxu Wang, Wenxiang Dong, Wenyi Zhang, and Chee Wei Tan. 2014. Rumor source detection with multiple observations: Fundamental limits and algorithms. In ACM SIGMETRICS Performance Evaluation Review, Vol. 42. ACM, 1–13.
[51] David Isaac Wolinsky, Henry Corrigan-Gibbs, Bryan Ford, and Aaron Johnson. 2012. Dissent in Numbers: Making Strong Anonymity Scale.. In OSDI. 179–182.
[52] M. Zamani, J. Saia, M. Movahedi, and J. Khoury. 2013. Towards provably-secure scalable anonymous broadcast. In USENIX FOCI.
[53] Bassam Zantout and Ramzi Haraty. 2011. I2P data communication system. In Proceedings of ICN. Citeseer, 401–409.
[54] Kai Zhu and Lei Ying. 2014. A robust information source estimator with sparse observations. Computational Social Networks 1, 1 (2014), 3.
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