A Quantum Key Distribution Technique Using Quantum Cryptography

2021 ◽  
pp. 890-898
Author(s):  
Meenakshi Sharma ◽  
Sonia Thind
Keyword(s):  
Quantum Cryptography ◽  
Data Security ◽  
Quantum Key Distribution ◽  
Quantum Physics ◽  
Key Distribution ◽  
Current Data ◽  
Important Application ◽  
The Internet ◽  
Sensitive Data ◽  
Unauthorized Access

In order to protect and secure the sensitive data over the internet, the current data security methods typically depend on the cryptographic systems. Recent achievements in quantum computing is a major challenge to such cryptography systems. In this way, the quantum key distribution (QKD) technique evolves as a very important technique which gives un-conditional data security. This technique is based on the laws of quantum physics for its security. This article gives a detailed description of the QKD technique. This technique secures the encryption key delivery between the two authenticated parties from the unauthorized access. In the next phase, quantum cryptography model is discussed. Finally, some important application areas and limitations of this technology are be discussed.

A Quantum Key Distribution Technique Using Quantum Cryptography

2021 ◽  
pp. 263-271
Author(s):  
Meenakshi Sharma ◽  
Sonia Thind
Keyword(s):  
Quantum Cryptography ◽  
Data Security ◽  
Quantum Key Distribution ◽  
Quantum Physics ◽  
Key Distribution ◽  
Current Data ◽  
Important Application ◽  
The Internet ◽  
Sensitive Data ◽  
Unauthorized Access

In order to protect and secure the sensitive data over the internet, the current data security methods typically depend on the cryptographic systems. Recent achievements in quantum computing is a major challenge to such cryptography systems. In this way, the quantum key distribution (QKD) technique evolves as a very important technique which gives un-conditional data security. This technique is based on the laws of quantum physics for its security. This article gives a detailed description of the QKD technique. This technique secures the encryption key delivery between the two authenticated parties from the unauthorized access. In the next phase, quantum cryptography model is discussed. Finally, some important application areas and limitations of this technology are be discussed.

A Quantum Key Distribution Technique Using Quantum Cryptography

2019 ◽  
Vol 11 (2) ◽  
pp. 1-10
Author(s):  
Meenakshi Sharma ◽  
Sonia Thind
Keyword(s):  
Quantum Cryptography ◽  
Data Security ◽  
Quantum Key Distribution ◽  
Quantum Physics ◽  
Key Distribution ◽  
Current Data ◽  
Important Application ◽  
The Internet ◽  
Sensitive Data ◽  
Unauthorized Access

In order to protect and secure the sensitive data over the internet, the current data security methods typically depend on the cryptographic systems. Recent achievements in quantum computing is a major challenge to such cryptography systems. In this way, the quantum key distribution (QKD) technique evolves as a very important technique which gives un-conditional data security. This technique is based on the laws of quantum physics for its security. This article gives a detailed description of the QKD technique. This technique secures the encryption key delivery between the two authenticated parties from the unauthorized access. In the next phase, quantum cryptography model is discussed. Finally, some important application areas and limitations of this technology are be discussed.

Quantum cryptography: Theoretical protocols for quantum key distribution and tests of selected commercial QKD systems in commercial fiber networks

2016 ◽  
Vol 14 (02) ◽  
pp. 1630002
Author(s):  
Monika Jacak ◽  
Janusz Jacak ◽  
Piotr Jóźwiak ◽  
Ireneusz Jóźwiak
Keyword(s):  
Quantum Cryptography ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Current Status ◽  
Entangled Photons ◽  
Fiber Networks ◽  
System Improvement ◽  
Metropolitan Networks

The overview of the current status of quantum cryptography is given in regard to quantum key distribution (QKD) protocols, implemented both on nonentangled and entangled flying qubits. Two commercial R&D platforms of QKD systems are described (the Clavis II platform by idQuantique implemented on nonentangled photons and the EPR S405 Quelle platform by AIT based on entangled photons) and tested for feasibility of their usage in commercial TELECOM fiber metropolitan networks. The comparison of systems efficiency, stability and resistivity against noise and hacker attacks is given with some suggestion toward system improvement, along with assessment of two models of QKD.

Cryptanalysis of a Practical Quantum Key Distribution with Polarization-Entangled Photons

2005 ◽  
Vol 5 (3) ◽  
pp. 181-186
Author(s):  
Th. Beth ◽  
J. Muller-Quade ◽  
R. Steinwandt
Keyword(s):  
Quantum Cryptography ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Key Exchange ◽  
Authentication Scheme ◽  
Entangled Photons ◽  
Key Exchange Protocol

Recently, a quantum key exchange protocol has been described\cite{PFLM04}, which served as basis for securing an actual bank transaction by means of quantum cryptography \cite{ZVS04}. The authentication scheme used to this aim has been proposed by Peev et al. \cite{PML04}. Here we show, that this authentication is insecure in the sense that an attacker can provoke a situation where initiator and responder of a key exchange end up with different keys. Moreover, it may happen that an attacker can decrypt a part of the plaintext protected with the derived encryption key.

Quantum Cryptography Key Distribution

2021 ◽  
pp. 325-344
Author(s):  
Bhanu Chander
Keyword(s):  
Quantum Mechanics ◽  
Information Transmission ◽  
Quantum Cryptography ◽  
Quantum Physics ◽  
Large Scale ◽  
Key Distribution ◽  
Computing Power ◽  
Contemporary State ◽  
Quantum Resistant Cryptography ◽  
Quantum Protocol

Quantum cryptography is actions to protect transactions through executing the circumstance of quantum physics. Up-to-the-minute cryptography builds security over the primitive ability of fragmenting enormous numbers into relevant primes; however, it features inconvenience with ever-increasing machine computing power along with current mathematical evolution. Among all the disputes, key distribution is the most important trouble in classical cryptography. Quantum cryptography endows with clandestine communication by means of offering a definitive protection statement with the rule of the atmosphere. Exploit quantum mechanics to cryptography can be enlarging unrestricted, unfailing information transmission. This chapter describes the contemporary state of classical cryptography along with the fundamentals of quantum cryptography, quantum protocol key distribution, implementation criteria, quantum protocol suite, quantum resistant cryptography, and large-scale quantum key challenges.

Quantum cryptography

2009 ◽  
Author(s):  
Stephen Barnett
Keyword(s):  
Quantum Information ◽  
Quantum Cryptography ◽  
Quantum Key Distribution ◽  
Communication Systems ◽  
Information Technologies ◽  
Key Distribution ◽  
Julius Caesar ◽  
Secure Communications ◽  
Quantum Communications ◽  
History Of

The practical implementation of quantum information technologies requires, for the most part, highly advanced and currently experimental procedures. One exception is quantum cryptography, or quantum key distribution, which has been successfully demonstrated in many laboratories and has reached an advanced level of development. It will probably become the first commercial application of quantum information. In quantum key distribution, Alice and Bob exploit a quantum channel to create a secret shared key comprising a random string of binary digits. This key can then be used to protect a subsequent communication between them. The principal idea is that the secrecy of the key distribution is ensured by the laws of quantum physics. Proving security for practical communication systems is a challenging problem and requires techniques that are beyond the scope of this book. At a fundamental level, however, the ideas are simple and may readily be understood with the knowledge we have already acquired. Quantum cryptography is the latest idea in the long history of secure (and not so secure) communications and, if it is to develop, it will have to compete with existing technologies. For this reason we begin with a brief survey of the history and current state of the art in secure communications before turning to the possibilities offered by quantum communications. The history of cryptography is a long and fascinating one. As a consequence of the success or, more spectacularly, the failure of ciphers, wars have been fought, battles decided, kingdoms won, and heads lost. In the information age, ciphers and cryptosystems have become part of everyday life; we use them to protect our computers, to shop over the Internet, and to access our money via an ATM (automated teller machine). One of the oldest and simplest of all ciphers is the transposition or Caesarean cipher (attributed to Julius Caesar), in which the letters are shifted by a known (and secret) number of places in the alphabet. If the shift is 1, for example, then A is enciphered as B, B→C, · · ·, Y→Z, Z→A. A shift of five places leads us to make the replacements A→F, B→G, · · ·, Y→D, Z→E.

scholarly journals An Overview of Quantum Key Distribution Protocols

2018 ◽  
Vol 21 ◽  
pp. 37-44 ◽  
Author(s):  
Anastasija Trizna ◽  
Andris Ozols
Keyword(s):  
Quantum Key Distribution ◽  
Quantum Physics ◽  
Key Distribution ◽  
Quantum Computers ◽  
Rapid Progress ◽  
Close Attention ◽  
Potential Threat ◽  
Classical Systems ◽  
Mathematical Problems ◽  
System Improvement

Quantum key distribution (QKD) is the objects of close attention and rapid progress due to the fact that once first quantum computers are available – classical cryptography systems will become partially or completely insecure. The potential threat to today’s information security cannot be neglected, and efficient quantum computing algorithms already exist. Quantum cryptography brings a completely new level of security and is based on quantum physics principles, comparing with the classical systems that rely on hard mathematical problems. The aim of the article is to overview QKD and the most conspicuous and prominent QKD protocols, their workflow and security basement. The article covers 17 QKD protocols and each introduces novel ideas for further QKD system improvement.

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