Sujoy Sinha Roy

Dr. Sujoy Sinha Roy is a tenured Associate Professor at Graz University of Technology (TU Graz), where he leads the CryptEng group. His research lies in cryptographic engineering, with a focus on secure and efficient implementation of post-quantum cryptography, fully homomorphic encryption, side-channel security, and hardware/software acceleration of advanced cryptographic protocols.

Dr. Sinha Roy publishes regularly in venues such as IACR TCHES, DATE, and IEEE Transactions, serves on program committees including TCHES, Eurocrypt, Asiacrypt, and DATE, and holds editorial roles with IEEE, Elsevier, and Springer journals. He received his PhD from KU Leuven in 2017, where his thesis received the IBM Innovation Award, and obtained his habilitation in January 2024.

Teaching

• Cryptography on Hardware Platforms
• Cryptography on Software Platforms
• Algorithm to Hardware using HLS

Focus Area

• Post-quantum cryptography
• Privacy-preserving cryptographic techniques
• Cryptographic proofs

Past PhD Students

• Andrea Basso
• Aikata

Past Postdocs

• Ahmet Can Mert

Current PhD Researchers

• Anisha Mukherjee
• Maciej Czuprynko
• David Jacqemin
• Florian Hirner
• Florian Krieger
• Selim Kirbiyik

Photo taken when we were trying to find a patent idea in Tesla's research lab.

Achievements by CryptEng Students

• Aikata won the ÖAW Critical Infrastructure Award 2025 (Austrian Academy of Sciences) for PhD research in PQC and FHE.
• Florian Krieger received the Austrian "Würdigungspreis" (2024), a federal award recognizing top 55 graduates among 16,000+ across all Austrian universities.
• Aloha-HE named finalist in the Open Hardware Competition 2024.
• Florian Krieger received WKO Steiermark Research Grant for his master's thesis on client-side FHE.
• Aikata awarded 1st prize for Best Master's Thesis at TU Graz Forum Technology and Society 2022 for her work on efficient polynomial arithmetic for Saber and Dilithium.

Reviewer in Conference PC

Asiacrypt 2025, TCHES 2025, DATE 2025, IACR-CIC 2025, TCHES 2024, DAC 2024, DATE 2024, ICCD 2024, SAC 2024, CT-RSA 2024, ...

Associate Editor

• IEEE Transactions on Emerging Topics in Computing
• Springer Journal of Cryptographic Engineering
• Elsevier Journal of Information Security and Applications