Publications

Publications by research theme and year, in reverse chronological order.

2026

  1. PETS
    When Threshold Meets Anamorphic Signatures: What is Possible and What is Not!
    Hien Chu, Khue Do, Lucjan Hanzlik, and Sri AravindaKrishnan Thyagarajan
    In Proceedings on Privacy Enhancing Technologies, 2026
    To appear
    Privacy
    PDF
  2. CCS
    Anchor-DKG: Distributed Key Generation with Repeating Parties
    Hanwen Feng, Qiang Tang, and Sri AravindaKrishnan Thyagarajan
    In Proceedings of the 2026 ACM SIGSAC Conference on Computer and Communications Security, 2026
    To appear
    Fairness in Computation Blockchain
  3. EUROCRYPT
    Game Theory Does Not Always Help: The Case of Statistical Multi-Party Coin Tossing
    Chen-Da Liu-Zhang, Elisaweta Masserova, João Ribeiro, and Sri AravindaKrishnan Thyagarajan
    In Advances in Cryptology – EUROCRYPT, 2026
    To appear
    Crypto meets Game Theory
    PDF
  4. FC
    How To Make Delegated Payments on Bitcoin: A Question for the AI Agentic Future
    Jay Taylor, Paul Gerhart, and Sri AravindaKrishnan Thyagarajan
    In Financial Cryptography and Data Security – FC, 2026
    To appear
    Blockchain Fairness in Computation
    PDF
  5. IEEE SP
    New Constructions of Functional Adaptor Signatures: Broader Functions and Improved Efficiency
    Nikhil Vanjani, Garrett Greiner, Sri AravindaKrishnan Thyagarajan, and Pratik Soni
    In IEEE Symposium on Security and Privacy, SP, 2026
    To appear
    Blockchain Fairness in Computation PQ Security

2025

  1. CSF
    VRaaS: Verifiable Randomness as a Service on Blockchains
    Jacob Gorman, Lucjan Hanzlik, Aniket Kate, Easwar Vivek Mangipudi, Pratyay Mukherjee, Pratik Sarkar, and Sri AravindaKrishnan Thyagarajan
    In 38th IEEE Computer Security Foundations Symposium, CSF, 2025
    Blockchain
    DOI PDF
  2. CVCBT
    Verifiable Weighted Secret Sharing
    Kareem Shehata, Han Fangqi, and Sri AravindaKrishnan Thyagarajan
    In Crypto Valley Conference, CVCBT, 2025
    Fairness in Computation
    DOI PDF
  3. IEEE SP
    Vitārit: Paying for Threshold Services on Bitcoin and Friends
    Sri AravindaKrishnan Thyagarajan, Easwar Vivek Mangipudi, Lucjan Hanzlik, Aniket Kate, and Pratyay Mukherjee
    In IEEE Symposium on Security and Privacy, SP, 2025
    Fairness in Computation Blockchain
    DOI PDF
  4. FC
    Rapidash: Atomic Swaps Secure Under User-Miner Collusion
    Hao Chung, Elisaweta Masserova, Elaine Shi, and Sri AravindaKrishnan Thyagarajan
    In Financial Cryptography and Data Security – FC, 2025
    Crypto meets Game Theory
    DOI PDF
  5. EUROCRYPT
    Efficient Distributed Randomness Generation from Minimal Assumptions Where PArties Speak Sequentially Once
    Chen-Da Liu-Zhang, Elisaweta Masserova, João Ribeiro, Pratik Soni, and Sri AravindaKrishnan Thyagarajan
    In Advances in Cryptology – EUROCRYPT, 2025
    Fairness in Computation
    DOI PDF

2024

  1. CCS
    Functional Adaptor Signatures: Beyond All-or-Nothing Blockchain-based Payments
    Nikhil Vanjani, Pratik Soni, and Sri AravindaKrishnan Thyagarajan
    In Proceedings of the 2024 ACM SIGSAC Conference on Computer and Communications Security, 2024
    Blockchain Fairness in Computation PQ Security
    DOI PDF
  2. CRYPTO
    Game-Theoretically Fair Distributed Sampling
    Sri AravindaKrishnan Thyagarajan, Pratik Soni, and Ke Wu
    In Advances in Cryptology – CRYPTO, 2024
    Crypto meets Game Theory
    DOI PDF
  3. CCS
    Non-interactive VSS using Class Groups and Application to DKG
    Aniket Kate, Easwar Vivek Mangipudi, Pratyay Mukherjee, Hamza Saleem, and Sri AravindaKrishnan Thyagarajan
    In Proceedings of the 2024 ACM SIGSAC Conference on Computer and Communications Security, 2024
    Fairness in Computation
    DOI PDF
  4. EUROCRYPT
    Foundations of Adaptor Signatures
    Paul Gerhart, Dominique Schröder, Pratik Soni, and Sri AravindaKrishnan Thyagarajan
    In Advances in Cryptology – EUROCRYPT, 2024
    Blockchain Fairness in Computation
    DOI PDF
  5. IEEE SP
    Sweep-UC: Swapping Coins Privately
    Lucjan Hanzlik, Julian Loss, Sri AravindaKrishnan Thyagarajan, and Benedikt Wagner
    In IEEE Symposium on Security and Privacy, SP, 2024
    Fairness in Computation Blockchain Privacy
    DOI PDF
  6. FC
    Improved YOSO Randomness Generation with Worst-Case Corruptions
    Chen-Da Liu-Zhang, Elisaweta Masserova, João Ribeiro, Pratik Soni, and Sri AravindaKrishnan Thyagarajan
    In Financial Cryptography and Data Security – FC, 2024
    Fairness in Computation
    DOI PDF Video

2023

  1. CCS
    Post Quantum Fuzzy Stealth Signatures and Applications
    Sihang Pu, Sri AravindaKrishnan Thyagarajan, Nico Döttling, and Lucjan Hanzlik
    In Proceedings of the 2023 ACM SIGSAC Conference on Computer and Communications Security, 2023
    Blockchain PQ Security Privacy
    DOI PDF
  2. PKC
    Transparent Batchable Time-lock Puzzles and Applications to Byzantine Consensus
    Shravan Srinivasan, Julian Loss, Giulio Malavolta, Kartik Nayak, Charalampos Papamanthou, and Sri AravindaKrishnan Thyagarajan
    In Public-Key Cryptography – PKC, 2023
    Fairness in Computation Blockchain
    DOI PDF
  3. NDSS
    Cryptographic Oracle-based Conditional Payments
    Varun Madathil, Sri AravindaKrishnan Thyagarajan, Dimitrios Vasilopoulos, Lloyd Fournier, Giulio Malavolta, and Pedro Moreno-Sanchez
    In 30th Annual Network and Distributed System Security Symposium, NDSS, 2023
    Fairness in Computation Blockchain
    PDF Video

2022

  1. ESORICS
    Verifiable Timed Linkable Ring Signatures for Scalable Payments for Monero
    Sri AravindaKrishnan Thyagarajan, Giulio Malavolta, Fritz Schmid, and Dominique Schröder
    In Computer Security – ESORICS, 2022
    Fairness in Computation Blockchain Privacy
    DOI PDF Video
  2. CCS
    Foundations of Coin Mixing Services
    Noemi Glaeser, Matteo Maffei, Giulio Malavolta, Pedro Moreno-Sanchez, Erkan Tairi, and Sri AravindaKrishnan Thyagarajan
    In Proceedings of the 2022 ACM SIGSAC Conference on Computer and Communications Security, 2022
    Blockchain Privacy
    DOI PDF
  3. CRYPTO
    Lattice-Based SNARKs: Publicly Verifiable, Preprocessing, and Recursively Composable
    Martin R. Albrecht, Valerio Cini, Russell W. F. Lai, Giulio Malavolta, and Sri AravindaKrishnan Thyagarajan
    In Advances in Cryptology – CRYPTO, 2022
    PQ Security Privacy
    DOI PDF Video Blog
  4. CCS
    Sleepy Channels: Bi-directional Payment Channels without Watchtowers
    Lukas Aumayr, Sri AravindaKrishnan Thyagarajan, Giulio Malavolta, Pedro Moreno-Sanchez, and Matteo Maffei
    In Proceedings of the 2022 ACM SIGSAC Conference on Computer and Communications Security, 2022
    Blockchain Crypto meets Game Theory
    DOI PDF Video
  5. IEEE SP
    Universal Atomic Swaps: Secure Exchange of Coins Across All Blockchains
    Sri AravindaKrishnan Thyagarajan, Giulio Malavolta, and Pedro Moreno-Sanchez
    In 43rd IEEE Symposium on Security and Privacy, SP, 2022
    Fairness in Computation Blockchain
    DOI PDF Video

2021

  1. CCS
    Efficient CCA Timed Commitments in Class Groups
    Sri AravindaKrishnan Thyagarajan, Guilhem Castagnos, Fabien Laguillaumie, and Giulio Malavolta
    In CCS ’21: 2021 ACM SIGSAC Conference on Computer and Communications Security, 2021
    Fairness in Computation
    DOI PDF
  2. CCS
    OpenSquare: Decentralized Repeated Modular Squaring Service
    Sri AravindaKrishnan Thyagarajan, Tiantian Gong, Adithya Bhat, Aniket Kate, and Dominique Schröder
    In CCS ’21: 2021 ACM SIGSAC Conference on Computer and Communications Security, 2021
    Fairness in Computation Blockchain
    DOI PDF
  3. IEEE SP
    Lockable Signatures for Blockchains: Scriptless Scripts for All Signatures
    Sri AravindaKrishnan Thyagarajan and Giulio Malavolta
    In 42nd IEEE Symposium on Security and Privacy, SP, 2021
    Blockchain Fairness in Computation
    DOI PDF Video
  4. FC
    Reparo: Publicly Verifiable Layer to Repair Blockchains
    Sri AravindaKrishnan Thyagarajan, Adithya Bhat, Bernardo Magri, Daniel Tschudi, and Aniket Kate
    In Financial Cryptography and Data Security – FC, 2021
    Blockchain
    DOI PDF

2020

  1. CCS
    Verifiable Timed Signatures Made Practical
    Sri AravindaKrishnan Thyagarajan, Adithya Bhat, Giulio Malavolta, Nico Döttling, Aniket Kate, and Dominique Schröder
    In CCS ’20: 2020 ACM SIGSAC Conference on Computer and Communications Security, 2020
    Fairness in Computation Blockchain Privacy
    DOI PDF Video
  2. ACNS
    Minting Mechanism for Proof of Stake Blockchains
    Dominic Deuber, Nico Döttling, Bernardo Magri, Giulio Malavolta, and Sri AravindaKrishnan Thyagarajan
    In Applied Cryptography and Network Security – ACNS, 2020
    Blockchain
    DOI PDF Video

2019

  1. CRYPTO
    Homomorphic Time-Lock Puzzles and Applications
    Giulio Malavolta and Sri AravindaKrishnan Thyagarajan
    In Advances in Cryptology – CRYPTO, 2019
    Fairness in Computation
    DOI PDF Video
  2. CCS
    Omniring: Scaling Private Payments Without Trusted Setup
    Russell W. F. Lai, Viktoria Ronge, Tim Ruffing, Dominique Schröder, Sri AravindaKrishnan Thyagarajan, and Jiafan Wang
    In Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security, 2019
    Fairness in Computation Blockchain Privacy
    DOI PDF
  3. IEEE SP
    Redactable Blockchain in the Permissionless Setting
    Dominic Deuber, Bernardo Magri, and Sri AravindaKrishnan Thyagarajan
    In 2019 IEEE Symposium on Security and Privacy, SP 2019, 2019
    Blockchain
    DOI PDF Video
  4. PKC
    Efficient Invisible and Unlinkable Sanitizable Signatures
    Xavier Bultel, Pascal Lafourcade, Russell W. F. Lai, Giulio Malavolta, Dominique Schröder, and Sri AravindaKrishnan Thyagarajan
    In Public-Key Cryptography – PKC, 2019
    Privacy
    DOI PDF
  5. PETS
    My Genome Belongs to Me: Controlling Third Party Computation on Genomic Data
    Dominic Deuber, Christoph Egger, Katharina Fech, Giulio Malavolta, Dominique Schröder, Sri AravindaKrishnan Thyagarajan, Florian Battke, and Claudia Durand
    Proceedings on Privacy Enhancing Technologies, 2019
    Privacy
    DOI PDF

2018

  1. CVCBT
    Burning Zerocoins for Fun and for Profit: A Cryptographic Denial-of-Spending Attack on the Zerocoin Protocol
    Tim Ruffing, Sri AravindaKrishnan Thyagarajan, Viktoria Ronge, and Dominique Schröder
    In Crypto Valley Conference on Blockchain Technology, CVCBT, 2018
    Blockchain
    DOI PDF

2015

  1. SCC@ASIACCS
    Fully Secure Inner-Product Proxy Re-Encryption with Constant Size Ciphertext
    Michael Backes, Martin Gagné, and Sri AravindaKrishnan Thyagarajan
    In Proceedings of the 3rd International Workshop on Security in Cloud Computing, SCC@ASIACCS, 2015
    DOI PDF