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Sourav Das
I received my PhD in Computer Science at UIUC,
working with Prof. Ling Ren on Security, Applied Cryptography and Distributed Computing.
I did my undergraduate studies from 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.
CV /
Github /
Google Scholar /
LinkedIn /
dblp
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Research Interests
I'm broadly interested in Security, Applied Cryptography, and Distributed Computing. I have also worked on Scalability of Smart Contracts
for permissionless blockchains.
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Selected Publications
* denotes alphabetical ordering
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2025
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Adaptively Secure Three-Round Threshold Schnorr Signatures from DDH
*Renas Bacho, Sourav Das, Julian Loss, and Ling Ren.
CRYPTO 2025.
Glacius: Threshold Schnorr Signatures from DDH with Full Adaptive Security
*Renas Bacho, 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!
Balaji Arun, Zekun Li, Florian Suri-Payer, Sourav Das, and Alexander Spiegelman.
NSDI 2025.
The Latency Price of Threshold Cryptosystem in Blockchains
Zhuolun Xiang, Sourav Das, Zekun Li, Zhoujun Ma, and Alexander Spiegelman.
FC 2025.
✔ Used in production by Aptos Labs!
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2024
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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
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2023
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On the Security of KZG Commitment for VSS
Atsuki Momose, 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.
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2022
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Secret-Shared Joins with Multiplicity from Aggregation Trees
*Saikrishna Badrinarayanan, Sourav Das, Gayathri Garimella, Srinivasan Raghuraman, Peter Rindal.
ACM CCS, 2022
Balanced Byzantine Reliable Broadcast with Near-Optimal Communication and Improved Computation
*Nicolas Alhaddad, Sourav Das, Sisi Duan, Ling Ren, Mayank Varia,Zhuolun Xiang, and Haibin Zhang.
ACM PODC, 2022
Merge of DRX22, ADVZ22, and DZ22.
Brief Announcement: Asynchronous Verifiable Information Dispersal with Near-Optimal Communication
*Nicolas Alhaddad, Sourav Das, Sisi Duan, Ling Ren, Mayank Varia,Zhuolun Xiang, and Haibin Zhang.
ACM PODC, 2022
Merge of 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
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2021
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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)
Nitin Awathare, Sourav Das, Vinay Ribeiro, and Umesh Bellur.
ICPE, 2021
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2019
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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!
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Misc
A list of problems that I have thought about and potentially have a solution to. April 2022.
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