Stateful Communication with Malicious Parties
Chen-Da Liu-Zhang, Christopher Portmann, Guilherme Rito
Velox: Scalable Fair Asynchronous MPC from Lightweight Cryptography
Akhil Bandarupalli, Xiaoyu Ji, Aniket Kate, Chen-Da Liu-Zhang, Daniel Pöllmann, Yifan Song
Conference on Computer and Communications Security -- CCS 2025.
Optimistic Message Dissemination
Chen-Da Liu-Zhang, Christian Matt, Søren Eller Thomsen
Advances in Financial Technologies -- AFT 2025
Computationally Efficient Asynchronous MPC with Linear Communication and Low Additive Overhead
Akhil Bandarupalli, Xiaoyu Ji, Aniket Kate, Chen-Da Liu-Zhang, Yifan Song
Annual International Cryptology Conference -- CRYPTO 2025.
Leader Election with Poly-logarithmic Communication Per Party
Amey Bhangale, Chen-Da Liu-Zhang, Julian Loss, Kartik Nayak, Sravya Yandamuri
Annual International Cryptology Conference -- CRYPTO 2025.
Communication-Optimal Convex Agreement
Diana Ghinea, Chen-Da Liu-Zhang and Roger Wattenhofer.
43th ACM Symposium on Principles of Distributed Computing -- PODC 2025. (A brief announcement of this paper appeared at PODC 2024.)
Efficient Distributed Randomness Generation from Minimal Assumptions where PArties Speak Sequentially Once
Chen-Da Liu-Zhang, Elisaweta Masserova, João Ribeiro, Pratik Soni, Sri AravindaKrishnan Thyagarajan
Annual International Conference on the Theory and Applications of Cryptology and Information Security -- EUROCRYPT 2025.
Optimal Early Termination for Dishonest Majority Broadcast
Giovanni Deligios, Ivana Klasovita, Chen-Da Liu-Zhang
Annual International Conference on the Theory and Applications of Cryptology and Information Security -- EUROCRYPT 2025.
Communication Lower Bounds for Cryptographic Broadcast Protocols
Invited to the DISC Special Issue of the Journal of Distributed Computing
Erica Blum, Elette Boyle, Ran Cohen and Chen-Da Liu-Zhang.
Journal of Distributed Computing 2025
37th International Symposium on Distributed Computing -- DISC 2023.
Statistical Layered MPC
Giovanni Deligios, Anders Konring, Chen-Da Liu-Zhang, Varun Narayanan.
Theory of Cryptography Conference -- TCC 2024.
Unbounded Leakage-Resilience and Intrusion-Detection in a Quantum World
Alper Cakan, Vipul Goyal, Chen-Da Liu-Zhang and João Ribeiro.
Accepted as a talk at Theory of Quantum Computation, Communication and Cryptography -- TQC 2024.
Theory of Cryptography Conference -- TCC 2024.
Efficient Execution Auditing for Blockchains under Byzantine Assumptions
Jeff Burdges, Alfonso Cevallos, Handan Kılınç Alper, Chen-Da Liu-Zhang, Fatemeh Shirazi, Alistair Stewart, Rob Habermeier, Robert Klotzner, and Andronik Ordian.
Science of Blockchain Conference -- SBC 2024.
Towards Achieving Asynchronous MPC with Linear Communication and Optimal Resilience
Vipul Goyal, Chen-Da Liu-Zhang and Yifan Song.
Annual International Cryptology Conference -- CRYPTO 2024.
Brief Announcement: Communication-Optimal Convex Agreement
Diana Ghinea, Chen-Da Liu-Zhang and Roger Wattenhofer.
43th ACM Symposium on Principles of Distributed Computing -- PODC 2024.
Delphi: Efficient Asynchronous Approximate Agreement for Distributed Oracles
Akhil Bandarupalli, Adithya Bhat, Saurabh Bagchi, Aniket Kate, Chen-Da Liu-Zhang, and Michael K. Reiter.
54th Annual IEEE/IFIP International Conference on Dependable Systems and Networks -- DSN 2024.
Asymptotically Optimal Message Dissemination with Applications to Blockchains
Chen-Da Liu-Zhang, Christian Matt and Søren Eller Thomsen.
Annual International Conference on the Theory and Applications of Cryptology and Information Security -- EUROCRYPT 2024.
Improved YOSO Randomness Generation with Worst-Case Corruptions
Chen-Da Liu-Zhang, Elisaweta Masserova, João Ribeiro, Pratik Soni, and Sri AravindaKrishnan Thyagarajan.
International Conference on Financial Cryptography and Data Security -- FC 2024.
Workshop on Cryptographic Tools for Blockchains -- CTB 2024.
Perfect MPC over Layered Graphs
Bernardo David, Giovanni Deligios, Aarushi Goel, Yuval Ishai, Anders Konring, Eyal Kushilevitz, Chen-Da Liu-Zhang, and Varun Narayanan.
Annual International Cryptology Conference -- CRYPTO 2023.
Merge of [eprint] and [eprint]
Network-Agnostic Security Comes for Free in DKG and MPC
Renas Bacho, Daniel Collins, Chen-Da Liu-Zhang and Julian Loss.
Annual International Cryptology Conference -- CRYPTO 2023.
Asymmetric Multi-Party Computation
Vipul Goyal, Chen-Da Liu-Zhang and Rafail Ostrovsky.
Information-Theoretic Cryptography -- ITC 2023.
Computational Quantum Secret Sharing
Alper Çakan, Vipul Goyal, Chen-Da Liu-Zhang and João Ribeiro.
Theory of Quantum Computation, Communication and Cryptography -- TQC 2023.
Multidimensional Approximate Agreement with Asynchronous Fallback
Diana Ghinea and Chen-Da Liu-Zhang and Roger Wattenhofer.
35th ACM Symposium on Parallelism in Algorithms and Architectures -- SPAA 2023.
Synchronous Perfectly Secure Message Transmission with Optimal Asynchronous Fallback Guarantees
Giovanni Deligios and Chen-Da Liu-Zhang.
International Conference on Financial Cryptography and Data Security -- FC 2023.
Asynchronous Multi-Party Quantum Computation
Vipul Goyal and Chen-Da Liu-Zhang and Justin Raizes and João Ribeiro.
14th Innovations in Theoretical Computer Science -- ITCS 2023.
Efficient Adaptively-Secure Byzantine Agreement for Long Messages
Amey Bhangale and Chen-Da Liu-Zhang and Julian Loss and Kartik Nayak.
International Conference on the Theory and Application of Cryptology and Information Security -- ASIACRYPT 2022.
Practical Provably Secure Flooding for Blockchains
Chen-Da Liu-Zhang and Christian Matt and Ueli Maurer and Guilherme Rito and Søren Eller Thomsen
International Conference on the Theory and Application of Cryptology and Information Security -- ASIACRYPT 2022.
Workshop on Cryptographic Tools for Blockchains -- CTB 2024.
Optimal Synchronous Approximate Agreement with Asynchronous Fallback
Diana Ghinea, Chen-Da Liu-Zhang and Roger Wattenhofer
41th ACM Symposium on Principles of Distributed Computing -- PODC 2022.
Round-Optimal Byzantine Agreement
Diana Ghinea, Vipul Goyal and Chen-Da Liu-Zhang.
Annual International Conference on the Theory and Applications of Cryptology and Information Security -- EUROCRYPT 2022.
Adaptive Security of Multi-Party Protocols, Revisited
Martin Hirt, Chen-Da Liu-Zhang and Ueli Maurer.
Theory of Cryptography Conference -- TCC 2021.
[eprint] [short video] [long video]
Round-Efficient Synchronous Byzantine Agreement and Multi-Party Computation with Asynchronous Fallback
Giovanni Deligios, Martin Hirt and Chen-Da Liu-Zhang.
Theory of Cryptography Conference -- TCC 2021.
On Communication-Efficient Asynchronous MPC with Adaptive Security
Annick Chopard, Martin Hirt and Chen-Da Liu-Zhang.
Theory of Cryptography Conference -- TCC 2021.
Expand-and-Extract: A New Way of Designing Round-Efficient Byzantine Agreement Protocols
Matthias Fitzi, Chen-Da Liu-Zhang and Julian Loss.
40th ACM Symposium on Principles of Distributed Computing -- PODC 2021.
Multi-Threshold Asynchronous Reliable Broadcast and Consensus
Martin Hirt, Ard Kastrati and Chen-Da Liu-Zhang.
24th Conference on Principles of Distributed Systems -- OPODIS 2020. (A brief announcement of this paper appeared at DISC 2020.)
On Broadcast in Generalized Network and Adversarial Models
Chen-Da Liu-Zhang, Varun Maram, and Ueli Maurer.
24th Conference on Principles of Distributed Systems -- OPODIS 2020. (A brief announcement of this paper appeared at DISC 2019.)
MPC with Synchronous Security and Asynchronous Responsiveness
Chen-Da Liu-Zhang, Julian Loss, Ueli Maurer, Tal Moran, and Daniel Tschudi.
International Conference on the Theory and Application of Cryptology and Information Security -- ASIACRYPT 2020.
Asynchronous Byzantine Agreement with Subquadratic Communication
Erica Blum, Jonathan Katz, Chen-Da Liu-Zhang, and Julian Loss.
Theory of Cryptography Conference -- TCC 2020.
Synchronous Constructive Cryptography
Chen-Da Liu-Zhang and Ueli Maurer.
Theory of Cryptography Conference -- TCC 2020.
From Partial to Global Asynchronous Reliable Broadcast
Diana Ghinea, Martin Hirt, and Chen-Da Liu-Zhang.
34th International Symposium on Distributed Computing -- DISC 2020.
Brief Announcement: Multi-Threshold Asynchronous Reliable Broadcast and Consensus
Martin Hirt, Ard Kastrati and Chen-Da Liu-Zhang.
34th International Symposium on Distributed Computing -- DISC 2020.
Always Have a Backup Plan: Fully Secure Synchronous MPC with Asynchronous Fallback
Erica Blum, Chen-Da Liu-Zhang, and Julian Loss.
Annual International Cryptology Conference -- CRYPTO 2020.
Topology-Hiding Computation for Networks with Unknown Delays
Rio LaVigne, Chen-Da Liu-Zhang, Ueli Maurer, Tal Moran, Marta Mularczyk, and Daniel Tschudi.
Public-Key Cryptography -- PKC 2020.
Brief Announcement: Towards Byzantine Broadcast in Generalized Communication and Adversarial Models
Chen-Da Liu-Zhang, Varun Maram and Ueli Maurer.
33rd International Symposium on Distributed Computing -- DISC 2019.
Topology-Hiding Computation Beyond Semi-Honest Adversaries
Rio LaVigne, Chen-Da Liu-Zhang, Ueli Maurer, Tal Moran, Marta Mularczyk, and Daniel Tschudi.
Theory of Cryptography Conference -- TCC 2018.
Efficiency Lower Bounds for Commit-and-Prove Constructions
Christian Badertscher, Sandro Coretti, Chen-Da Liu-Zhang, and Ueli Maurer.
IEEE Symposium on Information Theory -- ISIT 2017.
Witness-Hiding Proofs of Knowledge for Cable Locks
Chen-Da Liu-Zhang, Ueli Maurer, Martin Raszyk, and Daniel Tschudi.
IEEE Symposium on Information Theory -- ISIT 2017.
Multi-Party Computation: Definitions, Enhanced Security Guarantees and Efficiency
ETH Zurich, June 2021