Quantum Cryptography Research

Charles H. Bennett, François Bessette, Gilles Brassard A +2 more

Kaustubh Kumar Shukla, Hari Mohan, Amanzholova Saule Toksanovna +3 more

Quantum cryptography, a burgeoning field at the intersection of theoretical physics and practical cryptography, seeks to revolutionise communication security by harnessing the intricate theories of quantum mechanics. This chapter specifies an outline of the current condition of quantum cryptography research (QCR), spanning theoretical foundations, applications, and future challenges. Key features of QCR, including its security basis, distance limitations, error rates, key generation rates, equipment costs, integration complexity, and maturity level, are discussed. Central to QCR is the utilisation of Heisenberg's uncertainty principle and entanglement to establish communication channels immune to eavesdropping and interception. A popular application of QCR is quantum key distribution (QKD), which utilises photons to generate shared secret keys for encryption. Despite facing challenges such as integration complexity, error rates, and distance restrictions, QCR is rapidly advancing and transitioning from theoretical research to practical industry use. Furthermore, this chapter explores the fundamental differences between quantum and classical cryptography research, highlighting the use of photons and qubits as opposed to classical bits. Key areas of ongoing research in QCR, including the development of quantum networks, encryption techniques, and key distribution protocols, are also examined. Overall, QCR holds promise for improving the safety of digital communication in a period of increasing cyberthreats. As research in this field continues to evolve, key areas of focus include post-quantum cryptography, homomorphic encryption, cryptographic agility, lightweight cryptography, and usable security.

Hugo Zbinden

Lin Xiong

China's first quantum cryptography network has been successfully tested in Beijing,the Chinese Academy of Sciences announced on April 2,2007.It is the only fully-connected quantum network that could make simultaneous communications without any relay ever reported in the world,according to experts.The feat is a crucial step towards the practical usage of quantum cryptography from the point-to-point network.The success of this experiment,laid the foundation for the development of quantum Internet.This paper describes the generation of quantum cryptography,the basic principle of quantum cryptography in the field of experimental research and research results,and finally pointed out that quantum cryptography will be an important technology to protect the security of network communication.

Ruwayda Q. Alharbi, Soha S. Zaghloul

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.

Charles H. Bennett, François Bessette, Gilles Brassard A +2 more