We review the goals of cryptography, explain how quantum laws allow some of these goals to be attained that could not be otherwise, and comment on the future of quantum cryptography and the nature of its security.
Security and privacy have become such important commodities in
the information and globalization era that it would be
extremely beneficial to comprehensively explore possibilities
for providing (near) perfect performance in these fields. A
method based on quantum phenomena and the laws and limitations
of quantum information processing and communication was
recently developped with the aim of providing so-called
unconditional security in sensitive cryptographic tasks. During
the last 20 years, quantum cryptography has made remarkable
(even previously unimaginable) progress. The goal of this paper
is to present a brief introduction to the principles, methods
and achievements of quantum cryptography and to discuss its
recent advances and the challenges it poses, especially in the
area of quantum network security
The quantum cryptography approach is a significant change in secure communication in the sense that quantum cryptography bases its security on the law of quantum physics as opposed to computation difficulty. With classical encryption methods rapidly losing their resistance to the power of the underlying computers as well as the expected possibilities of the quantum computers, quantum cryptography comes into the limelight as a possible method of securing information in the long term. The paper is a detailed and systematic review of quantum cryptography along with the fundamentals of this practice, the way it works, and its practical implementation. It describes the ability of quantum phenomena to be unique (including superposition, uncertainty, and disturbance of measurement) and able to secure a key exchange as well as ensure any attempt of eavesdropping would be automatically noticed.In the review, the authors mainly discuss quantum key distribution (QKD) protocols, their functioning principles, security assurances, and the benefits of quantum over classical key exchange schemes. Besides that, the paper critically evaluates the real issues surrounding the implementation of quantum cryptographic systems such as hardware limitations, transmission range, environmental noise, and compatibility, to existing compatibility infrastructures. Recent advances in the field of experiments and pilot implementations are presented to determine the maturity of new technologies, and their suitability to be used on a large scale. Through its analytical review of theoretical assets, as well as practical constraints, this paper offers a definite and equalist view of the state of quantum cryptography today and also explains the research priorities important in its scale, moving away of the test production systems to the dependable and extensive security measures.
Maths-based cryptography has prevailed for years in the world of information security. Although this approach has succeeded till now, but it still has its drawbacks such as loopholes and life expectancy problem. Researchers found that Quantum Cryptography, which is based on the laws of physics, might be a good alternative. Therefore, we were motivated to analyze a number of research papers in the field. This paper studies both approaches, their advantages, disadvantages, and their expected future. Moreover, it exposes the basic principles of Quantum Cryptography as well as its protocols. It explains why Quantum Cryptography is considered as an alternative to the Classical Cryptography. In addition, it highlights the status of Quantum Cryptography in research nowadays. Finally, we predict which approach will dominate the world of information security in the far future.
Quantum computing, based on the principles of quantum mechanics, is rapidly gaining momentum as a promising field of information technology.However, with the growing capabilities of quantum computing comes a new level of cybersecurity.Quantum-secure cryptography is emerging as a response to the potential threats posed by quantum computers to traditional cryptographic methods.The main goal of quantum-secure cryptography is to ensure the security of data in information systems, as quantum computing becomes more and more accessible.In this study, we thoroughly studied the essence of quantum-secure cryptography, its fundamental principles and applications.We have explored the advantages and limitations of this new cryptographic paradigm and discussed the potential challenges that arise in the context of its implementation.In addition, we analyzed the current state of research in the field of quantum-secure cryptography and highlighted the prospects for further development of this intriguing technology.We have researched potential threats and possible ways to solve them.Additionally, we reviewed a quantum risk assessment methodology that helps identify and manage threats in the context of quantum security.Finally, we trace existing examples and recent developments in the field of quantum-secure cryptography, revealing their potential to improve information security in the future.Overall, the research allows for a better understanding of the importance and prospects of quantum-secure cryptography in today's digital world.