Harshal Shah

Staff Research Scientist

Team: Quantum Information and Computation

Research areas: Security, Cryptography, Quantum Computation

Harshal Shah, Senior Software Engineer at Visa.

Biography

Harshal joined Visa Research in August 2021 as a Senior Software Engineer and currently serves as a Staff Research Scientist. He holds a master’s degree in information security from Carnegie Mellon University and a bachelor’s degree from the Dhirubhai Ambani Institute of Information and Communication Technology. Prior to joining Visa, Harshal interned at the Indian Space Research Organisation, where he worked on Shamir’s Secret Sharing Scheme. He has also been part of the Visa Research team that participated in the PETs Prize Challenge co-sponsored by NIST and NSF, earning a Special Recognition Award for an innovative solution.

As a member of the Advanced Cryptography team, Harshal’s research interests broadly span cryptography, with a focus on making secure multi-party computation protocols more practical and efficient for real-world use cases. He has published research in leading cryptography venues, including Public Key Cryptography (PKC) and ACSAC workshops.

Publications

  1. S. Arora, A. Beams, P. Chatzigiannis, S. Meiser, K. Patel, S. Raghuraman, P. Rindal, H. Shah, Y. Wang, Y. Wu, H. Yang, M. Zamani, “Privacy-Preserving Financial Anomaly Detection via Federated Learning & Multi-Party Computation”, ACSAC Workshops 2024.
  2. S. Peceny, S. Raghuraman, P. Rindal, H. Shah, “Efficient Permutation Correlations and Batched Random Access for Two-Party Computation”, International Conference on Public Key Cryptography (PKC) 2025.
  3. V. Kolesnikov, S. Peceny, R. Rachuri, S. Raghuraman, P. Rindal, H. Shah, “Block-Accumulate Codes: Accelerated Linear Codes for PCGs and Zero-Knowledge”, IACR Cryptology e-Print 2025.
  4. S. Raghuraman, P. Rindal, H. Shah. “Two-Party Secret Shared Joins”, IACR Cryptology e-Print Archive, 2025.
  5. A. Bhat, H. Shah, M. Minaei. “Ira: Efficient Transaction Replay for Distributed Systems”, arXiv:2601.21286, 2026.
  6. D. Haridas, R. Shukla, H. O. Prakash, P. B. Rallapalli, V. Sarma, V. R. Venkatraman, H. Shah, H. Vaishnav “QSecret-Sharing Scheme (QSS)-Based Keyless: Titanium Secure (Titanium Sec) Email Application”, International Conference on Sustainable Technologies for Computational Intelligence (ICTSCI), 2019.

Patent

S. S. Arora, P. Chatzigiannis, S. Meiser, S. Raghuraman, P. B. Rindal, Y. Wang, Y. Wu, H. Yang, M. Zamani, H. B. Shah, A. Beams (2025), “Secure anomaly detection using federated learning”, U.S. Patent No. 12,481,999. United States Patent and Trademark Office.
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