Dr Avishek Majumder is an Assistant Professor at Krea University. His research focuses on cryptography and data security, with a particular interest in searchable encryption, secure databases, post-quantum security, verifiable search, privacy-preserving query processing, and blockchain technology. He received his PhD in Computer Science from the Indian Statistical Institute (ISI) in Kolkata, where his research focused on designing efficient and secure cryptographic protocols for secure databases.

Before joining Krea University, Dr Majumder was an Assistant Professor at UPES, Dehradun, and a Research Associate at IIIT Delhi. He holds a B.Tech in Electronics and an M.Tech in Nanoscience. This multidisciplinary background gives him a strong foundation in hardware and system design, which supports his work on building efficient, secure, and future-ready cryptographic solutions in emerging computing paradigms.

At Krea University, he teaches undergraduate and postgraduate courses in computer science and continues his research in both theoretical and applied cryptography. Outside academia, he enjoys playing chess and badminton and has a keen interest in collecting coins.

Research

• Searchable Encryption
• Blockchain Technology
• Cryptographic Protocol
• Broadcast Encryption
• Provable Security

Publications

In journals:

• Making searchable symmetric encryption schemes smaller and faster, Debrup Chakraborty, Avishek Majumder, & Subhabrata Samajder, International Journal of Information Security, (DOI: https://doi.org/10.1007/s10207-024-00915-y)
• Reinventing BrED: A Practical Construction: Formal Treatment of Broadcast Encryption with Dealership, Avishek Majumder, Sayantan Mukherjee, IACR Communications in Cryptology (DOI: https://doi.org/10.62056/ak5txl86bm)
• Fault-tolerant Verifiable Dynamic SSE with Forward and Backward Privacy, Bibhas Chandra Das, Nilanjan Datta, Avishek Majumder, Subhabrata Samajder, IACR Communications in Cryptology (DOI: https://doi.org/10.62056/ayl5w4fe-3)

In conferences:

• Efficient and Post-Quantum Conjunctive Dynamic SSE with Strong Privacy Guarantees, Bibhas Chandra Das, Nilanjan Datta, Avijit Dutta, Avishek Majumder, Debdeep Mukhopadhyay, Sikhar Patranabis, Subhabrata Samajder, and Laltu Sarder, To be appeared in PKC 2026
• Reinventing BrED: A Practical Construction: Formal Treatment of Broadcast Encryption with Dealership, Avishek Majumder, Sayantan Mukherjee, ArcticCrypt 2025 (https://simula-uib.com/arcticcrypt2025/) (without proceeding)

Pre-print:

ScaloWork: Useful Proof-of-Work with Distributed Pool Mining, Diptendu Chatterjee, Avishek Majumder, Subhra Mazumdar (DOI: https://doi.org/10.48550/arXiv.2504.14328)

Teaching Modules

• Database Management Systems (MTech).
• C Programming (BTech)
• Computer Organization and Architecture (BTech)
• Cryptology and Network Security (BSc)
• Blockchain Components and Architecture (BTech)
• Information Technology and Cyber Security (BTech)
• Problem Solving (BTech)
• Design and Analysis of Algorithms (BTech)