Sourav Das
I am a senior researcher at Category Labs working on blockchains.
I received my PhD in Computer Science at UIUC ,
working with Prof. Ling Ren .IIT Delhi , where
I was advised by Prof. Vinay Ribeiro . After finishing
my bachelors, I also had the fortune to visit National University of Singapore
and IIT Bombay as a Research Assistant.
I am highly honored to receive the 2022 ChainLink Labs Ph.D. fellowship. I am also a finalist of the 2022 Meta (Facebook) Ph.D. fellowship.
Github /
Google Scholar /
LinkedIn /
dblp
Selected Preprints
2025
Weighted Batched Threshold Encryption with Applications to Mempool Privacy
Sourav Das , Babak Poorebrahim Gilkalaye, Arup Mondal, Benny Pinkas, Peter Rindal, and Aayush Yadav.
eprint , 2025
Time-Lock Encrypted Storage for Blockchains
Sourav Das and Babak Poorebrahim Gilkalaye.
eprint , 2025
MonadBFT: Fast, Responsive, Fork-Resistant Streamlined Consensus
Sourav Das , Fatima Elsheimy, Mike Setrin, John Bergschneider, Babak Gilkalaye.
arxiv , 2025
✔ Used in production by Monad !
Selected Publications
2025
Adaptively Secure Three-Round Threshold Schnorr Signatures from DDH
Sourav Das , Julian Loss, and Ling Ren.
CRYPTO 2025 .
Glacius: Threshold Schnorr Signatures from DDH with Full Adaptive Security
Sourav Das , Julian Loss, and Ling Ren.
EUROCRYPT 2025 .
Distributed Randomness using Weighted VRFs
Sourav Das , Benny Pinkas, Alin Tomescu, and Zhuolun Xiang.
EUROCRYPT 2025, Also at TPMPC 2024 and SBC 2024 .
✔ Used in production by Aptos Labs !
Verifiable Secret Sharing Simplified
Sourav Das , Zhuolun Xiang, Alin Tomescu, Alexander Spiegelman, Benny Pinkas, and Ling Ren.
IEEE SP 2025 .
✔ Used in production by Supra Oracles !
Shoal++: High Throughput DAG BFT Can Be Fast!
Sourav Das , and Alexander Spiegelman.
NSDI 2025 .
The Latency Price of Threshold Cryptosystem in Blockchains
Sourav Das , Zekun Li, Zhoujun Ma, and Alexander Spiegelman.
FC 2025 .
✔ Used in production by Aptos Labs !
2024
Adaptively Secure BLS Threshold Signatures from DDH and co-CDH
Sourav Das and Ling Ren.
CRYPTO 2024 .
Asynchronous Consensus without Trusted Setup or Public-Key Cryptography
Sourav Das , Sisi Duan, Shengqi Liu, Atsuki Momose, Ling Ren, and Victor Shoup.
ACM CCS 2024 and SBC 2024 .
Powers of Tau in Asynchrony
Sourav Das , Zhuolun Xiang, and Ling Ren.
NDSS , 2024
2023
On the Security of KZG Commitment for VSS
Sourav Das , and Ling Ren.
ACM CCS , 2023.
Threshold Signatures from Inner Product Argument: Succinct, Weighted, and Multi-threshold
Sourav Das , Philippe Camacho, Zhuolun Xiang, Javier Nieto, Benedikt Bunz, and Ling Ren.
ACM CCS , 2023, SBC , 2023.
Practical Asynchronous High-threshold Distributed Key Generation and Distributed Polynomial Sampling
Sourav Das , Zhuolun Xiang, Lefteris Kokoris-Kogias and Ling Ren.
USENIX Security , 2023, Consensus Day 2023.
✔ Used in production by Arcana Network !
Distributed-Prover Interactive Proofs
Sourav Das , Rex Fernando, Ilan Komargodski, Elaine Shi, and Pratik Soni.
TCC , 2023.
2022
Secret-Shared Joins with Multiplicity from Aggregation Trees
Sourav Das , Gayathri Garimella, Srinivasan Raghuraman, Peter Rindal.
ACM CCS , 2022
Balanced Byzantine Reliable Broadcast with Near-Optimal Communication and Improved Computation
Sourav Das , Sisi Duan, Ling Ren, Mayank Varia,Zhuolun Xiang, and Haibin Zhang.
ACM PODC , 2022
DRX22 , ADVZ22 , and DZ22 .
Brief Announcement: Asynchronous Verifiable Information Dispersal with Near-Optimal Communication
Sourav Das , Sisi Duan, Ling Ren, Mayank Varia,Zhuolun Xiang, and Haibin Zhang.
ACM PODC , 2022
DRX22 , ADVZ22 , and DZ22 .
Practical Asynchronous Distributed Key Generation
Sourav Das , Thomas Yurek, Zhuolun Xiang, Andrew Miller, Lefteris Kokoris-Kogias, Ling Ren.
IEEE S&P and SBC 2022
✔ Used in production by Arcana Network !
SPURT: Scalable Distributed Randomness Beacon with Transparent Setup
Sourav Das , Vinith Krishnan, Irene Miriam Isaac, and Ling Ren.
IEEE S&P , 2022
Tuxedo: Maximizing Smart Contract computation in PoW Blockchains
Sourav Das , Nitin Awathare, Ling Ren, Vinay Ribeiro, and Umesh Bellur.
ACM SIGMETRICS , 2022
2021
Asynchronous Data Dissemination and its Applications
(short talk,
eprint)
Sourav Das , Zhuolun Xiang, and Ling Ren.
ACM CCS , 2021.
🏆 Best paper runners-up!
RENOIR: Accelerating Blockchain Validation using State Caching (talk)
Sourav Das , Vinay Ribeiro, and Umesh Bellur.
ICPE , 2021
2019
YODA: Enabling computationally intensive contracts on blockchains with Byzantine and Selfish nodes (talk)
Sourav Das , Vinay Ribeiro, and Abhijeet Anand.
NDSS , 2019
🏆 Suresh Chandra Memorial award for best IIT Delhi CSE Undergraduate thesis, 2018!
Misc
A list of problems that I have thought about and potentially have a solution to . April 2022.
