Abstract
The rapid evolution of quantum computing poses a critical threat to classical cryptographic systems, particularly in the Internet of Things (IoT), where lightweight, real-time, and secure communication is essential. Existing frameworks such as STarEdgeChain, THASSA, and PQES have explored various quantum-resilient or blockchain-integrated security mechanisms; however, they suffer from limitations including high latency, dependence on trusted hardware, lack of full post-quantum coverage, and limited validation on constrained devices. Addressing these gaps, this study proposes PQShield-IoT, a novel, fully integrated framework that ensures end-to-end post-quantum secure communication for resource-constrained IoT environments. The framework combines NIST-standard Kyber512 for key encapsulation and Dilithium2 for digital signatures with a lightweight Hyperledger Fabric-based permissioned blockchain for decentralized identity and access management. Implemented in Contiki-NG and NS-3, PQShield-IoT incorporates an adaptive cryptographic optimization layer that utilizes algorithmic pruning and hardware acceleration to achieve energy-efficient performance. The proposed model demonstrated an accuracy improvement of 28.5% in session integrity and achieved throughput gains of 33.3%, operating at 20 operations per second with an average latency of 50 ms, outperforming prior works tested under similar simulation constraints. Tested on a 15-node IoT network simulating IEEE 802.15.4 using dynamic attack models. PQShield-IoT provides an architecture that is scalable, tamper-evident, and quantum-resilient. These initial findings provide an exciting avenue for research in deployable, auditable, and forward-secure communication across next-generation critical IoT infrastructures.















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Dr.N.Sivanesan—Conceptualization, Formulization, Data Analysis, Validation and Drafting. Dr. K.S. Archana—Data Analysis, Validation and editing. Dr. A. Rajesh—Data Validation and review of analysis and draft validation. Dr. N.Parthiban—Formulization and analysis. Mr. S. Vijay—Analysis, Drafting and Editing. Dr.S.N.Sheela—Data Analysis and drafting.
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Narayanan, S., Archana, K.S., Rajesh, A. et al. Quantum-Resilient IoT Communication Framework Using Post-Quantum Cryptography and Blockchain for Secure Edge Devices. Iran J Sci Technol Trans Electr Eng 50, 203–221 (2026). https://doi.org/10.1007/s40998-025-01002-1
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DOI: https://doi.org/10.1007/s40998-025-01002-1
