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In contemporary cryptographic systems, secret keys are usually exchanged by means of methods, which suffer from mathematical and technology inherent drawbacks. That could lead to unnoticed complete compromise of cryptographic systems,…

Quantum Physics · Physics 2009-04-28 Solange Ghernaouti-Helie , Igli Tashi , Thomas Laenger , Christian Monyk

Secure communication makes the widespread use of telecommunication networks and services possible. With the constant progress of computing and mathematics, new cryptographic methods are being diligently developed. Quantum Key Distribution…

Cryptography and Security · Computer Science 2024-08-09 Emir Dervisevic , Amina Tankovic , Ehsan Fazel , Ramana Kompella , Peppino Fazio , Miroslav Voznak , Miralem Mehic

With the rapid development of quantum computers the currently secure cryptographic protocols may not stay that way. Quantum mechanics provides means to create an inherently secure communication channel that is protected by the laws of…

Popular Physics · Physics 2022-12-01 Andrew Frigyik

Quantum computers will change the cryptographic panorama. A technology once believed to lay far away into the future is increasingly closer to real world applications. Quantum computers will break the algorithms used in our public key…

Networking and Internet Architecture · Computer Science 2019-07-30 Alejandro Aguado , Victor Lopez , Diego Lopez , Momtchil Peev , Andreas Poppe , Antonio Pastor , Jesus Folgueira , Vicente Martiin

This paper aims to address the challenge of designing secure and high performance Quantum Key Distribution Networks (QKDN), which are essential for encrypted communication in the era of quantum computing. Focusing on the control and…

Networking and Internet Architecture · Computer Science 2025-02-06 Peter Horoschenkoff , Jasper Rödiger , Martin Wilske

Quantum Key Distribution (QKD) is a means of generating keys between a pair of computing hosts that is theoretically secure against cryptanalysis, even by a quantum computer. Although there is much active research into improving the QKD…

Cryptography and Security · Computer Science 2017-12-08 Piotr K. Tysowski , Xinhua Ling , Norbert Lütkenhaus , Michele Mosca

Current quantum key distribution (QKD) networks focus almost exclusively on transporting secret keys with the highest possible rate. Consequently, they are built as mostly fixed, ad hoc, logically, and physically isolated infrastructures…

Quantum key distribution (QKD) networks hold promise for sharing secure randomness over multi-partities. Most existing QKD network schemes and demonstrations are based on trusted relays or limited to point-to-point scenario. Here, we…

Quantum Physics · Physics 2020-09-30 Wen-Fei Cao , Yi-Zheng Zhen , Yu-Lin Zheng , Shuai Zhao , Feihu Xu , Li Li , Zeng-Bing Chen , Nai-Le Liu , Kai Chen

Quantum key distribution (QKD) together with one time pad encoding can provide information-theoretical security for communication. Currently, though QKD has been widely deployed in many metropolitan fiber networks, its implementation in a…

Quantum Physics · Physics 2018-09-10 Qiang Zhang , Feihu Xu , Yu-Ao Chen , Cheng-Zhi Peng , Jian-Wei Pan

Quantum key distribution---exchanging a random secret key relying on a quantum mechanical resource---is the core feature of secure quantum networks. Entanglement-based protocols offer additional layers of security and scale favorably with…

Secure communication plays a crucial role in the Internet Age. Quantum mechanics may revolutionise cryptography as we know it today. In this Review Article, we introduce the motivation and the current state of the art of research in quantum…

Quantum Physics · Physics 2015-05-27 Hoi-Kwong Lo , Marcos Curty , Kiyoshi Tamaki

Modern communication strives towards provably secure systems which can be widely deployed. Quantum key distribution provides a methodology to verify the integrity and security of a key exchange based on physical laws. However, physical…

Quantum Physics · Physics 2020-04-01 Henry Semenenko , Philip Sibson , Andy Hart , Mark G. Thompson , John G. Rarity , Chris Erven

A Quantum Key Distribution (QKD) network is an infrastructure that allows the realization of the key distribution cryptographic primitive over long distances and at high rates with information-theoretic security. In this work, we consider…

Quantum Physics · Physics 2009-09-30 Romain Alleaume , Francois Roueff , Eleni Diamanti , Norbert Lutkenhaus

We present a protocol for quantum cryptographic network consisting of a quantum network center and many users, in which any pair of parties with members chosen from the whole users on request can secure a quantum key distribution by help of…

Quantum Physics · Physics 2007-05-23 Sora Choi , Soojoon Lee , Dong Pyo Chi

With the ever-growing concern for internet security, the field of quantum cryptography emerges as a promising solution for enhancing the security of networking systems. In this paper, 20 notable papers from leading conferences and journals…

Cryptography and Security · Computer Science 2023-06-16 Mst Shapna Akter

In the last decades, Quantum Cryptography has become one of the most important branches of Quantum Communications with a particular projection over the future Quantum Internet. It is precisely in Quantum Cryptography where two techniques…

General Physics · Physics 2021-02-16 Mario Mastriani

As an extension of quantum key distribution, secure communication among multiple users is an essential task in a quantum network. When the quantum network structure becomes complicated with a large number of users, it is important to…

Quantum Physics · Physics 2023-02-13 Hongyi Zhou , Kefan Lv , Longbo Huang , Xiongfeng Ma

Digital signatures are widely used for providing security of communications. At the same time, the security of currently deployed digital signature protocols is based on unproven computational assumptions. An efficient way to ensure an…

Quantum Physics · Physics 2022-01-19 E. O. Kiktenko , A. S. Zelenetsky , A. K. Fedorov

The ability to distribute secret keys between two parties with information-theoretic security, that is, regardless of the capacities of a malevolent eavesdropper, is one of the most celebrated results in the field of quantum information…

Quantum Physics · Physics 2015-09-01 Eleni Diamanti , Anthony Leverrier

Quantum key distribution is a cryptographic primitive for the distribution of symmetric encryption keys between two parties that possess a pre-shared secret. Since the pre-shared secret is a requirement, quantum key distribution may be…

Quantum Physics · Physics 2017-07-11 Alexander Ling , Christoph Wildfeuer , Valerio Scarani