Nabanita Chakraborty and Ratna Dutta: Bandwidth-Efficient Anamorphic Extension with Provable Security from Blum-Goldwasser Cryptosystem. ACM AsiaPKC 2026 (Accepted).
Maria Leslie, Ratna Dutta: A traceable threshold Asmuth-Bloom secret sharing scheme. Journal of Information Security and Applications, 2026.
Ratna Dutta, Luca De Feo, Sugata Gangopadhyay: Progress in Cryptology - INDOCRYPT 2025 - 26th International Conference on Cryptology in India, Bhubaneshwar, India, December 14-17, 2025, Proceedings. Lecture Notes in Computer Science 16372, Springer 2026.
2025
Surbhi Shaw and Ratna Dutta: Post-quantum secure compact deterministic wallets from isogeny-based signatures with rerandomized keys. TCS Journal, Elsevier.
Vikas Srivastava, Debasish Roy, Sihem Mesnager, Nibedita Kundu, Sumit Kumar Debnath, Sourav Mukhopadhyay: A Post-Quantum Secure End-to-End Verifiable E-Voting Protocol Based on Multivariate Polynomials. CoRR abs/2512.17613 (2025)
Sourav Mukhopadhyay, Pantelimon Stanica:
Progress in Cryptology - INDOCRYPT 2024 - 25th International Conference on Cryptology in India, Chennai, India, December 18-21, 2024, Proceedings, Part I. Lecture Notes in Computer Science 15495, Springer 2025.
Sourav Mukhopadhyay, Pantelimon Stanica:
Progress in Cryptology - INDOCRYPT 2024 - 25th International Conference on Cryptology in India, Chennai, India, December 18-21, 2024, Proceedings, Part II. Lecture Notes in Computer Science 15496, Springer 2025.
2024
Jayashree Dey and Ratna Dutta: Privacy-Enhanced Secure Compact Attribute-Based Signature from MQ Problem, TCS Journal.
Pratima Jana and Ratna Dutta: CPAKE: Identity-Binding Password-Authenticated Key Exchange, Indocrypt 2024.
Pratima Jana and Ratna Dutta: Quantum-Safe Identity-Binding PAKE, ProvSec 2024.
Jayaprakash Kar, Sourav Mukhopadhyay, and Kshirasagar Naik: SL-PPCP: Secure and Low-Cost Privacy-Preserving Communication Protocol for Vehicular Ad Hoc Networks, IEEE Transactions on Vehicular Technology, 73(6): 8942-8956 (2024).
Anushree Belel and Ratna Dutta: Attribute-Based Inner Product Functional Encryption in Key-Policy Setting from Pairings, Proceedings of the 19th International Workshop on Security (IWSEC 2024), Springer LNCS, Kyoto, Japan, September 17-19, 2024.
Tapaswini Mohanty, Vikas Srivastava, Sumit Kumar Debnath, Debasish Roy, Kouichi Sakurai, and Sourav Mukhopadhyay: An Experimentally Validated Feasible Quantum Protocol for Identity-Based Signature with Application to Secure Email Communication, arXiv preprint arXiv:2403.18247 (2024).
Pratima Jana, Surbhi Shaw, and Ratna Dutta: Compact Adaptor Signature from Isogenies with Enhanced Security, Proceedings of the 23rd International Conference on Cryptology and Network Security (CANS 2024), LNCS, University of Cambridge, UK, September 24-27, 2024.
Subhranil Dutta, Tapas Pal, and Ratna Dutta: Reinforcing Privacy in Cloud Computing via Adaptively Secure Non-Zero Inner Product Encryption and Anonymous Identity-Based Revocation in Unbounded Setting, Theoretical Computer Science (TCS), Elsevier, 2024.
Anushree Belel, Ratna Dutta, and Sourav Mukhopadhyay: Key-Homomorphic and Revocable Ciphertext-Policy Attribute-Based Key Encapsulation Mechanism for Multimedia Applications, Multimedia Tools and Applications, Springer, 2024.
2023
Surbhi Shaw and Ratna Dutta: Compact Identity-Based Signature and Puncturable Signature from SQISign, Proceedings of the 26th Annual International Conference on Information Security and Cryptology (ICISC 2023), LNCS, Springer-Verlag, Seoul, Korea, 2023.
Surbhi Shaw and Ratna Dutta: Forward Secure Offline-Assisted Group Key Exchange from Isogeny-Based Blinded Key Encapsulation Mechanism, IEEE Transactions on Information Theory, 2023.
Surbhi Shaw and Ratna Dutta: Quantum-Resistant Multi-User Signcryption Scheme Featuring Key Invisibility for Internet of Things, Journal of Information Security and Applications, Elsevier, 2023.
Surbhi Shaw and Ratna Dutta: Compact Stateful Deterministic Wallet from Isogeny-Based Signature Featuring Uniquely Rerandomizable Public Keys, Proceedings of the 22nd International Conference on Cryptology and Network Security (CANS 2023), LNCS, October 31 - November 2, 2023, Augusta, Georgia, USA.
Pratima Jana and Ratna Dutta: Post-Quantum Secure Stateful Deterministic Wallet from Code-Based Signature Featuring Uniquely Rerandomized Keys, Proceedings of the 25th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS 2023), LNCS, Springer-Verlag, October 2-4, 2023, New Jersey, USA.
Anushree Belel, Ratna Dutta, and Sourav Mukhopadhyay: Hierarchical Identity-Based Inner Product Functional Encryption for Unbounded Hierarchical Depth, Proceedings of the 25th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS 2023), LNCS, Springer-Verlag, October 2-4, 2023, New Jersey, USA.
Chinmoy Biswas, Ratna Dutta, and Sumanta Sarkar: An Efficient Post-Quantum Secure Dynamic EPID Signature Scheme Using Lattices, Multimedia Tools and Applications, Springer, 2023.
Pratish Datta, Ratna Dutta, and Sourav Mukhopadhyay: Short Attribute-Based Signatures for Arbitrary Turing Machines from Standard Assumptions, Designs, Codes and Cryptography, Springer, 2023.
Anushree Belel, Ratna Dutta, and Sourav Mukhopadhyay: Communication-Friendly Threshold Trapdoor Function from Weaker Assumption for Distributed Cryptography, Annals of Telecommunications, Springer, 2023.
Kamalesh Acharya, Amit Kumar Singh, and Sourav Mukhopadhyay: Constructions of Broadcast Encryption with Personalized Messages from Bilinear Maps, Computer Communications, 209: 91-101 (2023).
2022
Jayashree Dey and Ratna Dutta: Progress in Multivariate Cryptography: Systematic Review, Challenges and Research Directions, ACM Computing Surveys, 2022.
Jayashree Dey and Ratna Dutta: Post-quantum Secure Fully-Dynamic Logarithmic-Size Deniable Group Signature in Code-Based Setting, Advances in Mathematics of Communications, AIMS, 2022.
Surbhi Shaw and Ratna Dutta: Post-quantum Secure ID-Based Identification and Identity-Based Signature Achieving Forward Secrecy, Journal of Information Security and Applications, Elsevier, July 2022.
Amit Kumar Singh, Kamalesh Acharya, and Ratna Dutta: Cloud Assisted Semi-Static Secure Accountable Authority Identity-Based Broadcast Encryption Featuring Public Traceability without Random Oracles, Annals of Telecommunications, Springer, 2022.
Chinmoy Biswas and Ratna Dutta: Secure and Efficient Multi-Key FHE Scheme Supporting Multi-Bit Messages from LWE Preserving Non-Interactive Decryption, Journal of Ambient Intelligence and Humanized Computing, Springer, April 2022.
Anushree Belel, Ratna Dutta, and Sourav Mukhopadhyay: Hierarchical Identity-Based Inner Product Functional Encryption for Privacy-Preserving Statistical Analysis without q-Type Assumption, Proceedings of EISA 2022, Wuhan, China, October 29-30, 2022.
Subhranil Dutta, Ratna Dutta, and Sourav Mukhopadhyay: Constructing Pairing-Free Unbounded Inner Product Functional Encryption Schemes with Unbounded Inner Product Policy, Proceedings of SECITC 2022, LNCS, December 8-9, 2022.
Anushree Belel, Ratna Dutta, and Sourav Mukhopadhyay: Trapdoor Function from Weaker Assumption in the Standard Model for Decentralized Network, Proceedings of CRYPTOLOGY 2022, Malaysia, July 26-28, 2022.
Jayashree Dey and Ratna Dutta: Code-Based Key Encapsulation Mechanism Preserving Short Ciphertext and Secret Key, Proceedings of SECRYPT 2022, July 11-13, 2022.
Anushree Belel, Ratna Dutta, and Sourav Mukhopadhyay: Key Encapsulation Mechanism in Ciphertext-Policy Attribute-Based Setting Featuring Revocation and Key-Homomorphic Property, Proceedings of SECRYPT 2022, July 11-13, 2022.
2021
Surbhi Shaw and Ratna Dutta: Key-Oblivious Encryption from Isogenies with Application to Accountable Tracing Signature, Proceedings of the 22nd International Conference on Cryptology in India (Indocrypt 2021), LNCS, Springer-Verlag, 2021.
Surbhi Shaw and Ratna Dutta: Identification Scheme and Forward-Secure Signature in Identity-Based Setting from Isogenies, Proceedings of the 15th International Conference on Provable and Practical Security (ProvSec 2021), LNCS, Springer-Verlag, Guangzhou, China, November 5-8, 2021.
Subhranil Dutta, Tapas Pal, and Ratna Dutta: Fully Secure Unbounded Zero Inner Product Encryption with Short Ciphertexts and Keys, Proceedings of ProvSec 2021, LNCS, Springer-Verlag, Guangzhou, China, November 5-8, 2021.
Ratna Dutta, Sumit Kumar Debnath, and Chinmoy Biswas: Storage-Friendly Provably Secure Multivariate Identity-Based Signature from Isomorphism of Polynomials Problem, Proceedings of the 18th International Conference on Security and Cryptography (SECRYPT 2021), July 6-8, 2021.
Tapas Pal and Ratna Dutta: Attribute-Based Access Control for Inner Product Functional Encryption from LWE, Proceedings of the 7th International Conference on Cryptology and Information Security in Latin America (LatinCrypt 2021), LNCS 12912, pp. 127-148, Springer-Verlag, Bogotá, October 6-8, 2021.
Tapas Pal and Ratna Dutta: CCA-Secure Attribute-Hiding Inner Product Encryption from Minimal Assumption, Proceedings of the 26th Australasian Conference on Information Security and Privacy (ACISP 2021), LNCS, Springer-Verlag, Perth, Australia, December 1-3, 2021.
Tapas Pal and Ratna Dutta: Chosen-Ciphertext Secure Functional Encryption from Constrained Witness PRF, Proceedings of ACISP 2021, LNCS, Springer-Verlag, Perth, Australia, December 1-3, 2021.
Amit Kumar Singh, Meenakshi Kansal, and Ratna Dutta: Efficient Multi-Signature Scheme Using Lattice, The Computer Journal, Oxford Academic, May 2021.
Mriganka Mandal and Ratna Dutta: Identity-Based Outsider Anonymous Cloud Data Outsourcing with Simultaneous Individual Transmission for IoT Environment, Journal of Information Security and Applications, Elsevier, May 2021.
Meenakshi Kansal, Ratna Dutta, and Sourav Mukhopadhyay: Lattice-Based Nominative Signature Using Pseudorandom Function, IET Information Security, Wiley, March 2021.
Saurabh Rana, Dheerendra Mishra, and Sourav Mukhopadhyay: Blockchain-Based Multimedia Content Distribution with Assured System Update Mechanism, Multimedia Tools and Applications, 80(19): 29423-29436 (2021).
Saurabh Rana, Mohammad S. Obaidat, Dheerendra Mishra, Sourav Mukhopadhyay, and Balqies Sadoun: Computationally Efficient Authenticated Digital Content Distribution Frameworks for DRM Systems: Review and Outlook, IEEE Systems Journal, 15(2): 1586-1593 (2021).
Ravi Anand, Arpita Maitra, Subhamoy Maitra, Chandra Sekhar Mukherjee, and Sourav Mukhopadhyay: Quantum Resource Estimation for FSR-Based Symmetric Ciphers and Related Grover's Attacks, Proceedings of INDOCRYPT 2021, pp. 179-198.
Chinmoy Biswas and Ratna Dutta: Dynamic Multi-Key FHE in Symmetric Key Setting from LWE without Using Common Reference Matrix, Journal of Ambient Intelligence and Humanized Computing, Springer, January 2021.
Earlier Works
Extensive publications (2007-2020) in top venues including IEEE, Springer, Elsevier,
CANS, ACISP, AFRICACRYPT.
Research areas include Functional Encryption, Broadcast Encryption,
Attribute-Based Cryptography, and Post-Quantum Security.
