Quantum Cryptography in Modern Cybersecurity

Quantum Cryptography in Modern Cybersecurity

Md Shariar Sozol1, Md Mostafizur Rahman2, Md Minhazul Islam3, Golam Mostafa Saki4

1 Master of Cybersecurity (Extension) & University of Technology Sydney (UTS), Australia

2 Master of Engineering (Extension) & University of Technology Sydney (UTS), Australia

3 Master of Information Technology (Extension) & University of Technology Sydney (UTS), Australia

4 MSc in Engineering Management & University of South Wales, United Kingdom (UK)

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Abstract - This article tends to deal with the fast-evolving world of quantum cryptography, specifically the concept of quantum key distribution (QKD), which has significant importance in modern-day cybersecurity scenarios. The most notable feature of quantum cryptography is its ability to ensure safe communication through principles borrowed from quantum mechanics such as entanglement and superposition. The research comprehensively analyses discrete-variable protocols (DVQKD) and continuous-variable ones (CVQKD), closely investigating their potential roles as re-inventors of secure communications owing to increasing cyber threats. In principle, quantum cryptography is invulnerable to all forms of attacks; however, there are numerous challenges to its implementation including high deployment costs, technology limitations and complex integration with existing systems for protecting data. This paper presents an elaborate state of today's quantum cryptography capturing its advancements, active research efforts as well as barriers towards increased use in build systems based on resistance against attacks utilizing properties specific to quantum mechanics.

Key Words:  Quantum Key Distribution (QKD), Post – Quantum Cryptography (PQC), Discrete-Variable (DVQKD) and Continuous-Variable (CVQKD), Quantum Superposition, Crypto-Attacks.