Theory and Practice of MPC

Publications and Preprints

  1. Perfectly-secure Network Agnostic MPC with Optimal Resiliency. PODC 2025.
    Shravani Patil and Arpita Patra
  2. Match Quest: Fast and Secure Pattern Matching. PoPETS 2025.
    Pranav Jangir, Nishat Koti, Varsha Bhat Kukkala, Arpita Patra, Bhavish Raj Gopal.
  3. Pay What You Spend! Privacy-Aware Real-Time Pricing with High Precision IEEE-754 Floating Point Division. AsiaCCS 2025.
    Soumyadyuti Ghosh, Boyapally Harishma, Ajith Suresh, Arpita Patra, Soumyajit Dey, Debdeep Mukhopadhyay.
  4. Graphiti: Secure Graph Computation Made More Scalable. ACM CCS 2024.
    Nishat Koti, Varsha Bhat Kukkala, Arpita Patra, Bhavish Raj Gopal
  5. Perfect Asynchronous MPC with Linear Communication Overhead. EUROCRYPT 2024.
    Ittai Abraham , Gilad Asharov, Shravani Patil and Arpita Patra
  6. Asterisk: Super-fast MPC with a Friend. IEEE S&P 2024.
    Banashri Karmakar, Nishat Koti, Arpita Patra, Sikhar Patranabis, Protik Paul, Divya Ravi
  7. Privadome: A Framework for Citizen Privacy in the Delivery Drone Era. PoPETS 2024.
    Gokulnath Pillai, Eikansh Gupta, Ajith Suresh, Vinod Ganapathy, Arpita Patra
  8. MPClan: Protocol Suite for Privacy-Conscious Computations. Journal of Cryptology (JoC), 2023. Part of Topical Collection on Computing on Encrypted Data..
    Nishat Koti, Shravani Patil, Arpita Patra, Ajith Suresh
  9. Vogue: Faster Computation of Private Heavy Hitters. IEEE Transactions on Dependable and Secure Computing 2023.
    Pranav Jangir, Nishat Koti, Varsha Bhat Kukkala, Arpita Patra, Bhavish Raj Gopal and Somya Sangal
  10. Beyond Honest Majority: The Round Complexity of Fair and Robust Multi-party Computation. Journal of Cryptology, 2023.
    Arpita Patra, Divya Ravi
  11. The Round Complexity of Statistical MPC with Optimal Resiliency. STOC 2023.
    Benny Applebaum, Eliran Kachlon, Arpita Patra.
  12. Detect, Pack and Batch: Perfectly-Secure MPC with Linear Communication and Constant Expected Time. EUROCRYPT 2023.
    Ittai Abraham, Gilad Asharov, Shravani Patil, Arpita Patra
  13. Shield: Secure Allegation Escrow System with Stronger Guarantees. WWW 2023.
    Nishat Koti, Varsha Bhat Kukkala, Arpita Patra, Bhavish Raj Gopal
  14. On the Communication Efficiency of Statistically-Secure Asynchronous MPC. Journal of Cryptology, 2023.
    Ashish, Choudhury, Arpita Patra
  15. Ruffle: Rapid 3-Party Shuffle Protocols. PoPETS/PETS 2023.
    Pranav Shriram A, Nishat Koti, Varsha Bhat Kukkala, Arpita Patra, Bhavish Raj Gopal, Somya Sangal.
  16. Find Thy Neighbourhood: Privacy-Preserving Local Clustering. PoPETS/PETS 2023.
    Pranav Shriram A, Nishat Koti, Varsha Bhat Kukkala, Arpita Patra, Bhavish Raj Gopal.
  17. BOOK: Secure Multi‑party Computation Against Passive Adversaries. “Synthesis Lectures on Distributed Computing Theory”, Springer.
    Ashish Choudhury, Arpita Patra
  18. Verifiable Relation Sharing and Multi-Verifier Zero-Knowledge in Two Rounds: Trading NIZKs with Honest Majority. CRYPTO 2022.
    Benny Applebaum, Eliran Kachlon, Arpita Patra
  19. Quadratic Multiparty Randomized Encodings Beyond Honest Majority and Their Applications. CRYPTO 2022.
    Benny Applebaum, Yuval Ishai, Orr Karni, Arpita Patra
  20. Round-optimal Honest-majority MPC in Minicrypt and with Everlasting Security. TCC 2022 .
    Benny Applebaum, Eliran Kachlon, Arpita Patra.
  21. Fully-Secure MPC with Minimal Trust. TCC 2022 .
    Yuval Ishai, Arpita Patra, Sikhar Patranabis, Divya Ravi, Akshayaram Srinivasan.
  22. On Perfectly Secure Two-Party Computation for Symmetric Functionalities with Correlated Randomness. TCC 2022 .
    Bar Alon, Olga Nissenbaum, Eran Omri, Anat Paskin-Cherniavsky, Arpita Patra.
  23. Attaining GOD Beyond Honest Majority With Friends and Foes. ASIACRYPT 2022 .
    Aditya Hegde, Nishat Koti, Varsha Bhat Kukkala, Shravani Patil, Arpita Patra and Protik Paul.
  24. PentaGOD: Stepping beyond traditional GOD with five parties. ACM CCS 2022.
    Nishat Koti, Varsha Bhat Kukkala, Arpita Patra, Bhavish Rajgopal
  25. A survey on Perfectly-Secure Verifiable Secret-Sharing. ACM Computing Survey 2022.
    Anirudh C, Ashish Choudhury, Arpita Patra
  26. Tetrad: Actively Secure 4PC for Secure Training and Inference. NDSS 2022.
    Nishat Koti, Arpita Patra, Rahul Rachuri, Ajith Suresh
  27. How to prove any NP statement jointly? Efficient Distributed-prover Zero-Knowledge Protocols. PoPETS/PETS 2022.
    Pankaj Dayama, Arpita Patra, Protik Paul, Nitin Singh, Dhinakaran Vinayagamurthy
  28. Three-Round Secure Multiparty Computation from Black-Box Two-Round Oblivious Transfer. CRYPTO 2021.
    Arpita Patra, Akshayaram Srinivasan.
  29. On the Exact Round Complexity of Three-party Computation. Journal of Cryptology 2021.
    Full and extended version of CRYPTO 2018 [PDF]
    Arpita Patra and Divya Ravi
  30. SWIFT: Super-fast and Robust Privacy-Preserving Machine Learning. Usenix Security Symposium 2021. (Brief Announcement in NeurIPS PRIML and PPML Workshop 2020.)
    Nishat Koti, Mahak Pancholi, Arpita Patra, Ajith Suresh.
  31. ABY2.0: Improved Mixed-Protocol Secure Two-Party Computation Usenix Security Symposium 2021.
    Arpita Patra, Thomas Schneider, Ajith Suresh, Hossein Yalame
  32. SynCirc: Efficient Synthesis of Depth‐Optimized Circuits for Secure Computation IEEE HOST 2021.
    Arpita Patra, Thomas Schneider, Ajith Suresh, Hossein Yalame
  33. The Round Complexity of Perfect MPC with Active Security and Optimal Resiliency. FOCS 2020.
    Benny Applebaum, Eliran Kachlon, Arpita Patra
  34. The Resiliency of MPC with Low Interaction: The Benefit of Making Errors. TCC 2020.
    Benny Applebaum, Eliran Kachlon and Arpita Patra.
  35. On the Exact Round Complexity of Best-of-both-Worlds Multi-party Computation. ASIACRYPT 2020.
    Arpita Patra, Divya Ravi and Swati Singla
  36. BLAZE: Blazing Fast Privacy-Preserving Machine Learning. NDSS 2020.
    Arpita Patra, Ajith Suresh
  37. FLASH: Fast and Robust Framework for Privacy-preserving Machine Learning. PETS 2020.
    Megha Byali, Harsh Chaudhari, Arpita Patra and Ajith Suresh
  38. Beyond Honest Majority: The Round Complexity of Fair and Robust Multi-party Computation. Asiacrypt 2019.
    Full and extended version in submission. [PDF].
    Arpita Patra, Divya Ravi
  39. ASTRA: High Throughput 3PC over Rings with Application to Secure Prediction. ACM CCSW 2019, PPML 2019.
    Harsh Chaudhari, Ashish Choudhury, Arpita Patra and Ajith Suresh
  40. Fast Actively-secure 5-Party Computation with Security Beyond Abort. ACM CCS 2019.
    Megha Byali, Carmit Hazay, Arpita Patra and Swati Singla
  41. On the power of Hybrid Networks in Secure Multi-party Computation. IEEE Transactions on Information Theory 2018.
    Arpita Patra and Divya Ravi
  42. On the Exact Round Complexity of Three-party Computation. CRYPTO'18.
    Full and extended version in submission. [PDF].
    Arpita Patra and Divya Ravi
  43. Fast Secure Computation for Small Population over the Internet. ACM CCS'18.
    with Megha Byali, Arun Joseph and Divya Ravi
  44. Efficient Adaptively Secure Zero-knowledge from Garbled Circuits. PKC 2018.
    with Chaya Ganesh, Yashvanth Kondi and Pratik Sarkar
  45. Privacy-Free Garbled Circuits for Formulas: Size Zero and Information-Theoretic. CRYPTO 2017.
    with Yashvanth Kondi
  46. Fast Actively Secure OT Extension for Short Secrets. NDSS 2017.
    with Pratik Sarkar and Ajith Suresh
  47. Round and Communication Efficient Unconditionally-Secure MPC with n > 3t in Partially Synchronous Network. ICITS 2017.
    with Ashish Choudhury and Divya Ravi
  48. An Efficient Framework for Unconditionally-secure Multiparty Computation. IEEE Transactions on Information Theory.
    with Ashish Choudhury
  49. Efficient One-Sided Adaptively Secure Computation. Journal of Cryptology, 2016.
    Full and extended version of TCC 2014. [PDF].
    with Carmit Hazay
  50. Linear Overhead Robust MPC with Honest Majority Using Preprocessing. SCN 2016. [PDF].
    with Ashish Choudhury, Emmanuela Orsini, Nigel Smart
  51. Efficient Asynchronous Verifiable Secret Sharing and Multiparty Computation. Journal of Cryptology, 2015.
    with Ashish Choudhary and C. Pandu Rangan
  52. Adaptively Secure Computation with Partial Erasures. PODC 2015.
    Full and extended version in submission. [PDF].
    with Carmit Hazay and Yehuda Lindell
  53. Optimally Resilient Asynchronous MPC with Linear Communication Complexity. ICDCN 2015 .
    with Ashish Choudhury
  54. Reducing the Overhead of MPC over a Large Population. SCN 2014. PDF.
    with Ashish Choudhury and Nigel P. Smart
  55. One-Sided Adaptively Secure Two-Party Computation. TCC 2014, LNCS 8349, pp. 368-393, 2014.
    with Carmit Hazay
  56. Between a Rock and a Hard Place: Interpolating Between MPC and FHE. ASIACRYPT 2013, LNCS 8270, pp. 221-240, 2013. PDF.
    with Ashish Choudhury, Jake Loftus, Emmanuela Orsini and Nigel P. Smart.
  57. Unconditionally Secure Asynchronous Multiparty Computation with Linear Communication Complexity. DISC 2013, LNCS 8205, pp. 406--421, 2013. [PDF].
    with Ashish Choudhury and Martin Hirt
  58. Brief Announcement: Efficient Optimally Resilient Statistical AVSS and Its Applications. Accepted in PODC 2012, pp. 103-104, ACM Press, 2012. PDF.
    with Ashish Choudhury
  59. Computational Verifiable Secret Sharing Revisited. ASIACRYPT 2011, LNCS 7073, pp. 590-609, 2011. PDF.
    with Michael Backes and Aniket Kate
  60. The Round Complexity of Verifiable Secret Sharing: The Statistical Case. ASIACRYPT 2010, LNCS 6477, pp. 431-447, 2010. PDF.
    with Ranjit Kumaresan and C. Pandu Rangan
  61. Communication Efficient Perfectly Secure VSS and MPC in Asynchronous Networks with Optimal Resilience. AFRICACRYPT 2010, LNCS 6055, pp. 184--202, 2010.
    with Ashish Choudhury and C. Pandu Rangan
  62. Information Theoretically Secure Multi Party Set Intersection Re-Visited. SAC 2009, LNCS 5867, pp. 71--91, 2009. PDF.
    with Ashish Choudhury and C. Pandu Rangan
  63. The Round Complexity of Verifiable Secret Sharing Revisited. CRYPTO 2009, LNCS 5677, pp. 487--504, 2009. PDF.
    with Ashish Choudhury, Tal Rabin and C. Pandu Rangan

Fault-tolerant Distributed Computing

Publications and Preprints

  1. BOOK: Fault-Tolerant Distributed Consensus in Synchronous Networks. Information Security and Cryptography, Springer 2025, ISBN 978-3-031-80459-5 .
    Ashish Choudhury, Arpita Patra
  2. Perfect Asynchronous Agreement on a Core Set in Constant Expected Time TCC 2024.
    Ittai Abraham , Gilad Asharov , Arpita Patra and Gilad Stern
  3. Asymptotically Free Broadcast in Constant Expected Time via Packed VSS. TCC 2022 .
    Ittai Abraham, Gilad Asharov, Shravani Patil, Arpita Patra.
  4. The Power of Shunning: Efficient Asynchronous Byzantine Agreement Revisited. Journal of ACM 2020.
    Full and extended version of PODC'18.
    Laasya Bangalore, Ashish Choudhury and Arpita Patra
  5. Optimal Extension Protocols for Byzantine Broadcast and Agreement. Distributed Computing 2020.
    Full and extended version of PODC'16 and OPODIS'11. [PDF].
    Chaya Ganesh, Arpita Patra
  6. Almost-Surely Terminating Asynchronous Byzantine Agreement Revisited. PODC'18.
    with Laasya Bangalore and Ashish Choudhury
  7. Crash-tolerant Consensus in Directed Graph Revisited. DISC 2017 (brief announcement); SIROCCO 2018 (full paper).
    with Ashish Choudhury, Gayathri Garimella, Divya Ravi and Pratik Sarkar
  8. Broadcast Extensions with Optimal Communication and Round Complexity. PODC 2016.
    with Chaya Ganesh
  9. Efficient Asynchronous Byzantine Agreement with Optimal Resilience. Distributed Computing Journal, volume 27, number 2, pp. 111- 146, 2014. PDF.
    with Ashish Choudhary and C. Pandu Rangan
  10. On the Tradeoff Between Network Connectivity, Round Complexity and Communication Complexity of Reliable Message Transmission. Journal of ACM, 2012. PDF.
    with Ashwinkumar Badanidiyuru, Ashish Choudhury, Kannan Srinathan and C. Pandu Rangan
  11. Secure Message Transmission in Asynchronous Networks. Journal of Parallel and Distributed Computing, vol. 71, no. 8, pp. 1067-1074, 2011. PDF.
    with Ashish Choudhury, Ashwinkumar B. V, Kannan Srinathan and C. Pandu Rangan
  12. Error-free Multi-valued Broadcast and Byzantine Agreement with Optimal Communication Complexity. OPODIS 2011, LNCS 7109, pp. 34-49, 2011. PDF.
  13. Simple and Efficient Single Round Almost Perfectly Secure Message Transmission Tolerating Generalized Adversary. ACNS 2011, LNCS 6715, pp. 292-308, 2011. PDF.
    with Ashish Choudhury and Kaoru Kurosawa
  14. Communication Efficient Asynchronous Byzantine Agreement. PODC 2010, pp 243-244, ACM Press, 2010. PDF.
    with C. Pandu Rangan
  15. Unconditionally Reliable and Secure Message Transmission in Undirected Synchronous Networks: Possibility, Feasibility and Optimality. International Journal of Applied Cryptography (IJACT), vol 2, Issue 2, pp. 159-197, 2010. PDF.
    with Ashish Choudhury, Kannan Srinathan and C. Pandu Rangan
  16. On The Communication Complexity of Perfectly Secure Message Transmission in Directed Networks. ICDCN 2010, LNCS 5935, pp. 42--53, 2010. PDF.
    with Ashish Choudhury and C. Pandu Rangan
  17. Simple and Efficient Asynchronous Byzantine Agreement with Optimal Resilience. PODC 2009, pp. 92--101, ACM Press, 2009.
    with Ashish Choudhury and C. Pandu Rangan
  18. Perfectly Reliable and Secure Message Transmission Tolerating Mobile Adversary. International Journal of Applied Cryptography (IJACT), vol. 1, Issue 3, pp. 200-224, 2009.
    with Ashish Choudhury, Kannan Srinathan, C. Pandu Rangan and Prasad Raghavendra
  19. Perfectly Secure Message Transmission in Directed Networks Revisited. PODC 2009, pp. 278--279, ACM Press, 2009.
    with Ashish Choudhury and C. Pandu Rangan
  20. On Minimal Connectivity Requirement for Secure Message Transmission in Asynchronous Networks. ICDCN 2009, LNCS 5408, pp. 148--162, 2009.
    with Ashish Choudhury, Ashwinkumar B.V, Kannan Srinathan and C. Pandu Rangan
  21. On Tradeoff Between Network Connectivity, Phase Complexity and Communication Complexity of Reliable Communication Tolerating Mixed Adversary. PODC 2008, pp. 115--124, ACM Press, 2008
    with Ashish Choudhury, Ashwinkumar B.V, Kannan Srinathan and C. Pandu Rangan
  22. Brief Announcement: Efficient Single Phase Unconditionally Secure Message Transmission with Optimum Communication Complexity. PODC 2008, pp. 457, ACM Press, 2008.
    with Ashish Choudhury, Kannan Srinathan and C. Pandu Rangan
  23. Efficient Perfectly Reliable and Secure Communication Tolerating Mobile Adversary. ACISP 2008, LNCS 5107, pp. 170--186, 2008.
    with Ashish Choudhury, Madhu Gayatri and C. Pandu Rangan
  24. Unconditionally Reliable and Secure Message Transmission in Directed Networks Revisited. SCN 2008, LNCS 5229, pp. 309--326, 2008.
    with Ashish Choudhury and C. Pandu Rangan
  25. Constant Phase Efficient Protocols for Perfectly Secure Message Transmission in Directed Networks. PODC 2007, pp. 322-323, ACM Press, 2007.
    with Ashish Choudhury and C. Pandu Rangan
  26. Perfectly Secure Message Transmission in Directed Networks Tolerating Mixed Adversary. DISC 2007, LNCS 4731, pp. 496--498, 2007.
    with Ashish Choudhury, Kannan Srinathan and C. Pandu Rangan

Miscellaneous

Publications

  1. Selective Opening Security for Receivers. ASIACRYPT 2015. Full and extended version in submission. [PDF].
    with Carmit Hazay and Bogdan Warinschi
  2. Anonymous Authentication with Shared Secrets. LatinCrypt 2014. PDF.
    with Joel Alwen, Martin Hirt, Ueli Maurer and Pavel Raykov
  3. Key-Indistinguishable Message Authentication Codes. SCN 2014, 2014. PDF.
    with Joel Alwen, Martin Hirt, Ueli Maurer and Pavel Raykov