Financial Cryptography and Data Security: 24th International Conference, FC 2020 , Kota Kinabalu, Malaysia, February 10–14, 2020 Revised Selected Papers (Lecture Notes in Computer Science Book 12059)

The 24th International Conference on Financial Cryptography and Data Security (FC 2020), was held February 10–14, 2020, at the Shangri-La Tanjung Aru Resort in Kota Kinabalu, Sabah, Malaysia.We received 162 paper submissions. Of these, 34 full papers and 2 short papers were accepted, a 22.2% acceptance rate. Revised papers appear in these proceedings. We are grateful for the contributions of the 76 members of the Program Committee. The review process took place over approximately seven weeks in October and November 2019. An extensive online discussion phase was utilized to guide decisions.The review process was double-blind and carried out entirely online via the HotCRP review platform. All accepted submissions received at least three reviews. A total of 554 reviews were completed, an average of 3.6 per submitted paper. The Program Committee members provided thoughtful and constructive feedback on all papers, which considerably strengthened the quality of the final program. We are especially thankful to Program Committee members who served as shepherds for 11 of the 36 accepted papers which were accepted conditionally on specific improvements being completed. We also appreciate the reviews contributed by 27 external reviewers. Front Matter ....Pages i-xiv Front Matter ....Pages 1-1 Leveraging Bitcoin Testnet for Bidirectional Botnet Command and Control Systems (Federico Franzoni, Ivan Abellan, Vanesa Daza)....Pages 3-19 Security Analysis on dBFT Protocol of NEO (Qin Wang, Jiangshan Yu, Zhiniang Peng, Van Cuong Bui, Shiping Chen, Yong Ding et al.)....Pages 20-31 Breaking the Encryption Scheme of the Moscow Internet Voting System (Pierrick Gaudry, Alexander Golovnev)....Pages 32-49 Short Paper: XOR Arbiter PUFs Have Systematic Response Bias (Nils Wisiol, Niklas Pirnay)....Pages 50-57 Front Matter ....Pages 59-59 Selfish Mining Re-Examined (Kevin Alarcón Negy, Peter R. Rizun, Emin Gün Sirer)....Pages 61-78 Fairness and Efficiency in DAG-Based Cryptocurrencies (Georgios Birmpas, Elias Koutsoupias, Philip Lazos, Francisco J. Marmolejo-Cossío)....Pages 79-96 Stake Shift in Major Cryptocurrencies: An Empirical Study (Rainer Stütz, Peter Gaži, Bernhard Haslhofer, Jacob Illum)....Pages 97-113 Coded Merkle Tree: Solving Data Availability Attacks in Blockchains (Mingchao Yu, Saeid Sahraei, Songze Li, Salman Avestimehr, Sreeram Kannan, Pramod Viswanath)....Pages 114-134 Front Matter ....Pages 135-135 Decentralized Privacy-Preserving Netting Protocol on Blockchain for Payment Systems (Shengjiao Cao, Yuan Yuan, Angelo De Caro, Karthik Nandakumar, Kaoutar Elkhiyaoui, Yanyan Hu)....Pages 137-155 The Arwen Trading Protocols (Ethan Heilman, Sebastien Lipmann, Sharon Goldberg)....Pages 156-173 SoK: A Classification Framework for Stablecoin Designs (Amani Moin, Kevin Sekniqi, Emin Gun Sirer)....Pages 174-197 Front Matter ....Pages 199-199 SoK: Layer-Two Blockchain Protocols (Lewis Gudgeon, Pedro Moreno-Sanchez, Stefanie Roos, Patrick McCorry, Arthur Gervais)....Pages 201-226 MicroCash: Practical Concurrent Processing of Micropayments (Ghada Almashaqbeh, Allison Bishop, Justin Cappos)....Pages 227-244 LockDown: Balance Availability Attack Against Lightning Network Channels (Cristina Pérez-Solà, Alejandro Ranchal-Pedrosa, Jordi Herrera-Joancomartí, Guillermo Navarro-Arribas, Joaquin Garcia-Alfaro)....Pages 245-263 Ride the Lightning: The Game Theory of Payment Channels (Zeta Avarikioti, Lioba Heimbach, Yuyi Wang, Roger Wattenhofer)....Pages 264-283 How to Profit from Payments Channels (Oğuzhan Ersoy, Stefanie Roos, Zekeriya Erkin)....Pages 284-303 Boomerang: Redundancy Improves Latency and Throughput in Payment-Channel Networks (Vivek Bagaria, Joachim Neu, David Tse)....Pages 304-324 DLSAG: Non-interactive Refund Transactions for Interoperable Payment Channels in Monero (Pedro Moreno-Sanchez, Arthur Blue, Duc V. Le, Sarang Noether, Brandon Goodell, Aniket Kate)....Pages 325-345 Cerberus Channels: Incentivizing Watchtowers for Bitcoin (Zeta Avarikioti, Orfeas Stefanos Thyfronitis Litos, Roger Wattenhofer)....Pages 346-366 Front Matter ....Pages 367-367 Communication-Efficient (Client-Aided) Secure Two-Party Protocols and Its Application (Satsuya Ohata, Koji Nuida)....Pages 369-385 Secure Computation of the \(k^{\mathrm {th}}\)-Ranked Element in a Star Network (Anselme Tueno, Florian Kerschbaum, Stefan Katzenbeisser, Yordan Boev, Mubashir Qureshi)....Pages 386-403 Insured MPC: Efficient Secure Computation with Financial Penalties (Carsten Baum, Bernardo David, Rafael Dowsley)....Pages 404-420 Front Matter ....Pages 421-421 Zether: Towards Privacy in a Smart Contract World (Benedikt Bünz, Shashank Agrawal, Mahdi Zamani, Dan Boneh)....Pages 423-443 An Airdrop that Preserves Recipient Privacy (Riad S. Wahby, Dan Boneh, Christopher Jeffrey, Joseph Poon)....Pages 444-463 RingCT 3.0 for Blockchain Confidential Transaction: Shorter Size and Stronger Security (Tsz Hon Yuen, Shi-Feng Sun, Joseph K. Liu, Man Ho Au, Muhammed F. Esgin, Qingzhao Zhang et al.)....Pages 464-483 BLAZE: Practical Lattice-Based Blind Signatures for Privacy-Preserving Applications (Nabil Alkeilani Alkadri, Rachid El Bansarkhani, Johannes Buchmann)....Pages 484-502 Front Matter ....Pages 503-503 Non-interactive Proofs of Proof-of-Work (Aggelos Kiayias, Andrew Miller, Dionysis Zindros)....Pages 505-522 Proof-of-Burn (Kostis Karantias, Aggelos Kiayias, Dionysis Zindros)....Pages 523-540 Non-interactive Cryptographic Timestamping Based on Verifiable Delay Functions (Esteban Landerreche, Marc Stevens, Christian Schaffner)....Pages 541-558 Front Matter ....Pages 559-559 Open Market or Ghost Town? The Curious Case of OpenBazaar (James E. Arps, Nicolas Christin)....Pages 561-577 Exploring the Monero Peer-to-Peer Network (Tong Cao, Jiangshan Yu, Jérémie Decouchant, Xiapu Luo, Paulo Verissimo)....Pages 578-594 Surviving the Cryptojungle: Perception and Management of Risk Among North American Cryptocurrency (Non)Users (Artemij Voskobojnikov, Borke Obada-Obieh, Yue Huang, Konstantin Beznosov)....Pages 595-614 Front Matter ....Pages 615-615 Address Clustering Heuristics for Ethereum (Friedhelm Victor)....Pages 617-633 What are the Actual Flaws in Important Smart Contracts (And How Can We Find Them)? (Alex Groce, Josselin Feist, Gustavo Grieco, Michael Colburn)....Pages 634-653 Characterizing Code Clones in the Ethereum Smart Contract Ecosystem (Ningyu He, Lei Wu, Haoyu Wang, Yao Guo, Xuxian Jiang)....Pages 654-675 Smart Contracts for Government Processes: Case Study and Prototype Implementation (Short Paper) (Magnus Krogsbøll, Liv Hartoft Borre, Tijs Slaats, Søren Debois)....Pages 676-684 Back Matter ....Pages 685-686 This book constitutes the thoroughly refereed post-conference proceedings of the 24th International Conference on Financial Cryptography and Data Security, FC 2020, held in Kota Kinabalu, Malaysia, in February 2020. The 34 revised full papers and 2 short papers were carefully selected and reviewed from 162 submissions. The papers are grouped in the following topical sections: attacks; consensus; cryptoeconomics; layer 2; secure computation; privacy; crypto foundations; empirical studies; and smart contracts.