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A Comprehensive Review of Post-Quantum Cryptography Protocols for Secure Communications in Heterogeneous Network Environments

Radius: Journal of Science and Technology

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Volume 2, Issue 2,  Article Number: 252006 (2025)

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Manju Singh1,* | Fakhrun Jamal1  

1Shobhit Institute of Engineering & Technology, Meerut – 250110, Uttar Pradesh (India)

*Corresponding Author: manju9761@gmail.com

Received: 04 November 2024 | Revised: 20 November 2025

Accepted: 21 November 2025 | Published Online: 02 December 2025

DOI: https://doi.org/10.5281/zenodo.17664126

© 2025 The Authors, under a Creative Commons license, Published by Scholarly Publication

Abstract

The advent of quantum computing has precipitated an estimated attack resistant cryptography system necessitating quantum attacks. The classical asymmetric algorithms, i.e., RSA and ECC are susceptible to Shor algorithm and a transition should be made to Post-Quantum Cryptography (PQC) anymore. The novelty of this work lies in providing a unified comparative framework that analyzes PQC families through security assumptions, concrete key/ciphertext sizes, and implementation complexity an aspect not addressed collectively in prior surveys. This survey gives a general picture of the status of the design process and general evaluation of PQC accounting its application within the paradigm of the diversified networks including the IoT and 5G/6G and in the cyber-physical environment. Furthermore, this review uniquely synthesizes practical hybrid deployment strategies, including protocol layering, coexistence models, and backward compatibility mechanisms, offering actionable guidance for real world migration. Additionally, the manuscript contributes a prioritized list of open problems across IoT, 5G/6G, blockchain, and cyber physical systems, highlighting domains facing the most urgent quantum resilience challenges. In this paper, the authors will evaluate the most popular PQC schemes, including schemes based on lattice, code, hash, and isogeny, depending on their performance, scalability, and interoperability (with reference to the recent research). It also examines the problems of integration as implemented with respect to the computational overhead, latency and adoption of hybrid with classical cryptography. This is expounded more to the standardization of PQC by NISTs and with a focus on such algorithms as CRYSTALS-Kyber and Dilithium. The findings suggest that, hybrid PQC protocols are able to control quantum resistance and actual performance in numerous infrastructures in computing systems.

Keywords

Post-Quantum Cryptography, Quantum-Resilient Security, 6G Networks, IoT Security, Lattice-Based Encryption

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Cite This Article

M. Singh and F. Jamal, “A Comprehensive Review of Post-Quantum Cryptography Protocols for Secure Communications in Heterogeneous Network Environments,” Radius: Journal of Science and Technology 2(2) (2025) 252006. https://doi.org/10.5281/zenodo.17664126

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