Browsing by Author "Renisha, P.S."

Now showing 1 - 4 of 4

A Hybrid Framework for Secure Group Communication Using Quantum-Classical Cryptography and Reinforcement Learning
(Institute of Electrical and Electronics Engineers Inc., 2025) Renisha, P.S.; Rudra, B.
This research work describes a framework for secured and effective way of group interaction incorporating classical cryptography and quantum communication technique. This framework employs a classical cryptographic methods for group logistics like as transmitting of messages and membership management while employing quantum communication strategy for secure key distribution and related authentication. In order to increase the flexibility and data-security of the proposed system further, a supervisor learning based mechanism is incorporated into the framework where reinforcement learning will employed in controlling the interaction of the protocols and the decision-making processes in an active manner. This combination of classical, quantum and supervisor learning strategies gives a solution to the issues of scalability, efficiency, effective and timely actionable response to increasing cyber threats especially in the era of quantum computing. The framework is highly effective and secured for group interaction in distributed network infrastructures. It will be a leading the approach for advanced cryptographic mechanism in the future. Â© 2025 IEEE.
Advancing Security and Scalability - A Protocol Extension for Dynamic Group Membership Management
(AnaPub Publications, 2025) Renisha, P.S.; Rudra, B.
The integration of Contributory Group Key Agreement (CGKA) for group formation revolutionizes the collaborative process of generating group keys, instilling trust and fostering collaboration among group members. By ensuring that each member actively contributes to the generation of the group key, CGKA distributes the responsibility of key generation across the group, thereby enhancing the security and resilience of the group's cryptographic infrastructure. Concurrently, the utilization of Lattice Diffie-Hellman (LDH) for key generation leverages the mathematical properties of lattices to securely derive shared secret keys. LDH offers a robust and efficient method for generating keys in cryptographic applications, ensuring the confidentiality and integrity of communication channels. Furthermore, the incorporation of blockchain technology for implementing membership changes introduces a decentralized and transparent approach to managing group membership dynamics. By leveraging blockchain's distributed ledger technology and smart contracts, membership changes can be executed securely, transparently, and efficiently. This enhances the integrity and resilience of the group's membership management system, allowing for the secure addition and removal of members from the group while maintaining the integrity of the cryptographic infrastructure. Together, the integration of CGKA, LDH, and blockchain technology presents a comprehensive solution for advancing the security and scalability of dynamic group membership management protocols, offering a robust framework for secure and efficient communication in contemporary environments. Moreover, the proposed integration of CGKA, LDH, and blockchain technology facilitates seamless adaptation to dynamic changes in group membership, ensuring that security and scalability are maintained even as the composition of the group evolves. Through simulations and performance evaluations, the effectiveness of the integrated approach that is implemented in Python Software is demonstrated compared to existing protocols like Elliptic Curve Diffie-Hellman (ECDH), RSA Key Exchange, and Post-Quantum Cryptography (PQC). ©2025 The Authors.
Optimized Lattice-Based Homomorphic Encryption for Secure Multiparty Computation in Group Communication
(Institute of Electrical and Electronics Engineers Inc., 2024) Renisha, P.S.; Rudra, B.
This research work describes a framework for secured and effective way of group interaction incorporating classical cryptography and quantum communication technique. This framework employs a classical cryptographic methods for group logistics like as transmitting of messages and membership management while employing quantum communication strategy for secure key distribution and related authentication. In order to increase the flexibility and datasecurity of the proposed system further, a supervisor learning based mechanism is incorporated into the framework where reinforcement learning will employed in controlling the interaction of the protocols and the decision-making processes in an active manner. This combination of classical, quantum and supervisor learning strategies gives a solution to the issues of scalability, efficiency, effective and timely actionable response to increasing cyber threats especially in the era of quantum computing. The framework is highly effective and secured for group interaction in distributed network infrastructures. It will be a leading the approach for advanced cryptographic mechanism in the future. Â© 2024 IEEE.
Quantum-Safe Threshold Cryptography for Decentralized Group Key Management via Dealerless DKG (CRYSTALS–Kyber)
(Multidisciplinary Digital Publishing Institute (MDPI), 2025) Renisha, P.S.; Rudra, B.
Post-quantum threshold cryptography requires complete elimination of classical assumptions to achieve genuine quantum resistance. This work presents a fully lattice-based dealerless distributed key generation (DKG) protocol with threshold CRYSTALS–Kyber implementation. We implemented a four-phase DKG protocol using lattice-based primitives: SIS-based commitments for verification, Ring-LWE secret sharing, and secure multi-party key derivation without reconstructing private keys. Our approach eliminates the need for a trusted dealer while maintaining 192-bit post-quantum security through exclusive reliance on lattice problems. Experimental evaluation demonstrates (Formula presented.) communication complexity for lattice-based DKG setup across 3-20 participants, with secure threshold operations preserving key secrecy. Security analysis provides formal reductions to Ring-LWE and Ring-SIS assumptions, ensuring genuine quantum resistance throughout the protocol stack. © 2025 by the authors.