Dr. Sumit Kumar Debnath is currently working as an Associate Professor, School of Basic Sciences, Mathematics, IIT Bhubaneswar, India. He completed his M.Sc. in 2012 and PhD in 2017 from the Department of Mathematics, IIT Kharagpur, India. He has published several research articles in Internationally reputed journals and conferences. He received silver medal by North Bengal University and university rank holder scholarship by UGC for securing first class second position in B.Sc. He is a life member of Cryptology Research Society of India (CRSI).  His research interests include quantum cryptography, post-quantum cryptography, secure two-party/multi-party computation, secure set intersection, electronic voting, Blockchain Technology, IoT, etc.

Number Theory and Cryptography, Linear Algebra, Discrete Mathematics, Engineering Mathematics-I, Engineering Mathematics-II (Dec 2022- June 2026) at National Institute of Technology Jamshedpur.

Engineering Mathematics-III (June 2022- December 2022) at Indian Institute of Information Technology Kalyani.

Number Theory and Cryptography, Discrete Mathematics, Linear Algebra, Integral Transforms, Engineering Mathematics-I, Engineering Mathematics-II and Engineering Mathematics-III (June 2018- June 2022) at National Institute of Technology Jamshedpur.

Offered Research Assistant Position at IT Security and Cryptography, Flensburg University, Germany, 2018.

Offered Postdoc Researcher Position at School of Computer Science, Guangzhou University, China, 2017.

Got silver medal for securing first class second position in B.Sc. from University of North Bengal, 2010.

Awarded University Rank-holder Scholarship by University Grants Commission, 2010.

DRDO ER & IPR Research Project (2020-2022) (Principal Investigator) Title: Security Analysis & Development of Multivariate Post-Quantum Cryptography Schemes
Amount – 39.73 Lakh INR
Status – Completed

IMU Sponsored Research Project (2022-2026) (Principal Investigator)
Title: GRAID Research Project
Amount – 13584 USD
Status – On-going

CEFIPRA CSRP Indo-France Collaborative Research Project (2023-2026) (Principal Investigator)
Title: Development of Advanced Cryptographic Primitives using Multivariate Public Key Cryptography as an Aid to IoT and Blockchain Technology
Amount: 97.53542 Lakh INR
Status: On-going

Baidya, P., Paul, R., Srivastava, V., & Debnath, S. K. (2026). Error Detection Schemes for Barrett Modular Multiplication of CT-BU on FPGA in PQC and FHE. IEEE Transactions on Emerging Topics in Computing.

Kumari, S., Kansal, M., & Debnath, S. K. (2026). Aggregate-Blind signature based on Lattices. Advances in Mathematics of Communications, 23, 274-287.

Sapna Jyoti Patel and Sumit Kumar Debnath: Cryptanalysis of two Code-Based Blind Signatures. In the Proceedings of 11th International Conference on Information and Communication Technology for Intelligent Systems (ICTIS 2026), LNNS, Springer Nature.

Paresh Baidya, Rourab Paul, Vikas Srivastava, and Sumit Kumar Debnath: Energy -Efficient NTT Sampler for Kyber Benchmarked FPGA. In the Proceedings of 11th International Conference on Information and Communication Technology for Intelligent Systems (ICTIS 2026), LNNS, Springer Nature.

Sushmita Sarkar and Sumit Kumar Debnath: Multi-Secret Sharing Scheme with Quantum CSS Codes. In the Proceedings of 11th International Conference on Information and Communication Technology for Intelligent Systems (ICTIS 2026), LNNS, Springer Nature.

Joined in the School of Basic Sciences, Mathematics, Indian Institute of Technology Bhubaneswar as Associate Professor during June 2026.

Worked as Assistant Professor (Grade-I), Department of Mathematics, National Institute of Technology Jamshedpur during December 2022-June 2026.

Worked as Assistant Professor (Grade-I), Department of Mathematics, Indian Institute of Information Technology Kalyani during June 2022-December 2022.

Worked as Assistant Professor (Grade-II), Department of Mathematics, National Institute of Technology Jamshedpur during June 2018-June 2022.

Reviewer of papers for several international journals and conferences. 2. Guest Editor for the Special Issue entitled “Security and Privacy 2020” in the journal SN Computer Science, Springer.Editor of the Proceedings of 1st International Conference on Security & Privacy (ICSP 2020), Lecture Notes in Electrical Engineering (LNEE), Series Volume 744, Springer.
Editor of the Proceedings of 2nd International Conference on Security & Privacy (ICSP 2021), Communications in Computer and Information Science (CCIS), Series Volume 1497, Springer.
Editor of the Proceedings of 3rd International Conference on Security & Privacy (ICSP 2024), Communications in Computer and Information Science (CCIS), Series Volume 2489, Springer.
Editor of the Proceedings of 4th International Conference on Security & Privacy (ICSP 2025), Communications in Computer and Information Science (CCIS), Series Volume 2799, Springer.