Research

Google Scholar, DBLP, ORCiD

Funding

• PI, “ViBS: Voting in Blockchain Systems”, funded by Cyber Security Academic Startup Accelerator Programme year 5: phase 1 (CyberASAP), UK, funding amount ∼£15K, funding period April ’21 - May ’21 (2 months)
  Here is the link to the Kent story.

• Co-I, “Digital Data Deception Technology Watch Newsletters”, funded by Defence Science and Technology Laboratory (Dstl) UK, funding amount ∼£50K, funding period August ’20 - March ’22 (20 months)
  Here is the link to the newsletters.

Supervision

• Jack Moyler, University of Kent (2020 onward; PhD viva passed in January 2025)
  Topic: New results on lattice reduction algorithms using deep insertions
  Primary supervisor

• Avishek Majumder, Indian Statistical Institute (2022 onward; PhD thesis defended in January 2025)
  Topic: Making Cloud Storages Secure and Efficient
  Significant supervisory role 

Publications

The author names are in lexicographic order signifying that all authors have significant contributions. Student author names are qualified with a * (star), denoting they have done a lot of the hard work that went into the respective papers.

Journal Publications:

• (Game Theory)
  Sanjay Bhattacherjee and Satya R. Chakravarty and Palash Sarkar. A General Model for Multi-Parameter Weighted Voting Games, International Journal of Game Theory, 54(15), 2025.

  • (Draft on RePEc)

• (Cryptology)
  Sanjay Bhattacherjee and Julio Hernandez-Castro and Jack Moyler*. A Greedy Global Framework for Lattice Reduction Using Deep Insertions, IACR Communications in Cryptology, 2(1), April 08, 2025.

  • (Draft on ePrint; Implementations available on Github)

• (Proportional allocation; Order matching)
  Sanjay Bhattacherjee and Palash Sarkar. On Using Proportional Representation Methods as Alternatives to Pro-Rata Based Order Matching Algorithms in Stock Exchanges, Computational Economics, 65:1-20, 2024.

  • (also on arXiv.org)

• (Game Theory)
  Sanjay Bhattacherjee and Palash Sarkar. Weighted Voting Procedure having a Unique Blocker, International Journal of Game Theory, 50:279-295, 2021.

  • A previous longer draft with more (unpublished) details is available here.

• (Cryptology)
  Sanjay Bhattacherjee and Palash Sarkar. Reducing Communication Overhead of the Subset Difference Scheme. IEEE Transactions on Computers, 65(8):2575-2587, 2016.

  • (also on ePrint 2014/577)

• (Cryptology)
  Sanjay Bhattacherjee and Palash Sarkar. Tree Based Symmetric Key Broadcast Encryption. Journal of Discrete Algorithms, 34:78-107, 2015.

  • (also on ePrint 2013/786)

• (Cryptology)
  Sanjay Bhattacherjee and Palash Sarkar. Concrete Analysis and Trade-Offs for the (Complete Tree) Layered Subset Difference Broadcast Encryption Scheme. IEEE Transactions on Computers, 63(7):1709-1722, 2014.

  • (also on ePrint 2012/337)

• (Cryptology)
  Sanjay Bhattacherjee and Palash Sarkar. Complete Tree Subset Difference Broadcast Encryption Scheme and its Analysis. Design, Codes and Cryptography, 66(1):335-362, 2013.

  • (also on ePrint 2011/480)

Papers in Edited Volumes:

• (Game Theory)
  Sanjay Bhattacherjee and Palash Sarkar. Correlation and Inequality in Weighted Majority Voting Games, pp 161-191, Festschrift volume in honour of Professor Satya R.Chakravarty, Indraneel Dasgupta and Manipushpak Mitra (editors), Deprivation, Inequality and Polarization. Economic Studies in Inequality, Social Exclusion and Well-Being, Springer, Singapore, DOI:https://doi.org/10.1007/978-981-13-7944-4_9.

  • (also on RePEc)

Conference Publications:

• (Fact-checking; Information Retrieval)
  Enes Altuncu* and Can Baskent and Sanjay Bhattacherjee and Shujun Li and Dwaipayan Roy. FACTors: A New Dataset for Studying the Fact-checking Ecosystem. In Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR'25), Padua, Italy, July 13-17, 2025.

  • (Draft on arXiv.org; Dataset and code available at this link.)

• (Blockchains; NLP)
  Zsofia Baruwa* and Sanjay Bhattacherjee and Sahil Rey Chandnani* and Zhen Zhu. User Perceptions of Cryptocurrency Attacks -- Extended Abstract. In Proceedings of IEEE Crypto Valley Conference 2025, Rotkreuz, Switzerland, June 5-6, 2025.

  • (Draft on arXiv.org)

• (Blockchains; Game Theory)
  Sanjay Bhattacherjee and Palash Sarkar. Voting Games to Model Protocol Stability and Security of Proof-of-Work Cryptocurrencies. In Fang, F., Xu, H., Hayel, Y. (eds) Decision and Game Theory for SarXiv.orgecurity (GameSec'22), Pittsburgh, Pennsylvania, USA, Oct 26-28, 2022.

  • (The first draft of this work is on ePrint)

• (Cryptology)
  Shweta Agrawal and Sanjay Bhattacherjee and Duong Hieu Phan and Damien Stehlé and Shota Yamada. Efficient Public Trace and Revoke from Standard Assumptions, In Proceedings of the 2017 ACM SIGSAC Conference on Computer and Communications Security (CCS ’17), New York, USA, Oct 30-Nov 3, 2017.

  • (also on ePrint 2017/650)

• (Cryptology)
  Sanjay Bhattacherjee and Palash Sarkar. An Analysis of the Naor-Naor-Lotspeich Subset Difference Algorithm (For Possibly Incomplete Binary Trees). In Proceedings of the 7th International Workshop on Coding and Cryptography (WCC'11), Paris, France, April 11-15, 2011.

Unpublished Drafts:

• Can Başkent and Sanjay Bhattacherjee and and Shujun Li. Applications of Game Theory and Epistemic Logic to Fact-Checking. 2022. (Draft on KAR)

• Santanu Bhowmick, Sanjay Bhattacherjee, Nandakumar G.N. Generation of Test Vectors for Sequential Cell Verification. ARM Regional Engineering Conference, 2008.