Authors : Nonso Okika; Gift Aruchi Nwatuzie; Hamed Salam Olarinoye; ugustine A. Nwaka; Emmanuel Igba; Roland Dunee

Volume/Issue : Volume 10 - 2025, Issue 2 - February

Google Scholar : https://tinyurl.com/mrunjuv5

Scribd : https://tinyurl.com/uhnzsx93

DOI : https://doi.org/10.5281/zenodo.14959440

Abstract : The rapid advancement of quantum computing poses a significant threat to traditional cryptographic systems, necessitating a comprehensive evaluation of their vulnerabilities and the transition toward quantum-resistant security models. This review explores the security implications of quantum computing on classical cryptographic algorithms, such as RSA and ECC, through penetration testing methodologies designed to assess their resilience against quantum attacks. Additionally, it examines the effectiveness of post-quantum cryptographic (PQC) solutions, including lattice-based, hash- based, and multivariate cryptographic schemes, in mitigating these emerging risks. Furthermore, the study highlights the role of Zero Trust Security (ZTS) as a robust cybersecurity framework for strengthening defenses in the quantum era. By integrating continuous authentication, least privilege access, and micro-segmentation, Zero Trust Security enhances resilience against both classical and quantum threats. Through an analysis of real-world case studies, industry standards, and regulatory developments, this review provides insights into best practices for organizations to proactively fortify their cryptographic infrastructures. The findings emphasize the urgency of adopting hybrid security approaches that combine PQC with Zero Trust principles to ensure long-term data protection and cyber resilience in the face of quantum-enabled adversaries.

Keywords : Quantum Cryptography, Photon Detection, Polarization, Key Exchange, Post-Quantum Security, Encryption.

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