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Post-Quantum Cryptography: A Systematic Review of Algorithms, Standardization, Challenges, and Future Research Directions

Aritrik Ghosh

Published Jan 1, 2026• 0 citations
Publisher
DOI
10.2139/ssrn.7128678

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Post-Quantum Cryptography (PQC) is an emerging field that aims to develop cryptographic algorithms resistant to attacks by quantum computers. As quantum computing technology advances, traditional cryptographic methods such as RSA and ECC are becoming increasingly vulnerable. This systematic review provides an in-depth analysis of the current state of PQC, focusing on the most promising algorithms and their potential applications. The review covers lattice-based, code-based, multivariate, and hash-based cryptographic schemes, evaluating their security, efficiency, and practicality. We also discuss the challenges and future directions in PQC, including standardization efforts and integration into existing cryptographic systems. This paper aims to serve as a comprehensive resource for researchers, practitioners, and policymakers interested in the next generation of cybersecurity algorithms
Post-quantum cryptography (PQC) provides the essential cryptographic algorithms needed to secure digital networking systems against future adversaries equipped with quantum computing. This paper reviews the PQC research landscape and identifies open challenges and future directions for the critical transition to PQC in digital networking systems. Building on the NIST standardization process which has hardened the PQC cipher algorithm security, this paper analyzes and describes the recent research on PQC implementations and integrations into scalable and standardized networking systems (Internet, web and cellular networks). We review research on the security, side-channel threats, performances, overheads, and compatibility of PQC ciphers. We also study the research incorporating PQC into the standardized web and cellular networking protocols, ranging from testing the PQC feasibility to proposing protocol solutions and mechanisms to enable PQC. Our study highlights the PQC challenge of large parameter sizes, common across the PQC cipher algorithms, and the research proposing protocol- and system-level mechanisms to address them. Informed by the survey, this paper identifies and highlights the research gaps and future directions to facilitate further research and development for PQC and to secure next-generation digital networking systems.