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International Conference on IT Convergence and Security (ICITCS)

Key Distribution Protocol on Quantum Cryptography

Kondwani Makanda, Jun‐Cheol Jeon

Published Dec 1, 2013• 1 citation
Publisher

Abstract

In this paper, we discuss some problems in modern key distribution cryptography such as Diffie-Hellman key distribution and compare with quantum key distribution cryptography which has potential of replacing the typical algorithms due to the fact that they use natural properties of physics like not being able to be cloned or copied.
DOI
10.1109/icitcs.2013.6717850

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Most cryptographic mechanisms, such as symmetric and asymmetric cryptography, often involve the use of cryptographic keys. However, all cryptographic techniques will be ineffective if th e key distribution mechanism is weak. The security of most modern cryptographic systems of key distribution mechanism is based on computational co mplexity and the extraordinary time needed to break the code. Quantum Key Distribution (QKD) or Quantum Cryptography is attracting much attention as a solution of the problem of key distribution; QKD of fers unconditionally secure communication based on quantum mechanics. In this article we survey the mo st popular QKD protocols. Also, we give a short state of the art of Quantum Cryptography.
The advancement of the quantum computing is challenging the foundation of the cryptography by its almost unlimited computation power to predict the secure key that is thought to be absolutely secure based on the currently used algorithms such as the RSA and the Diffie-Hellman and others. The field of quantum cryptography on the other hand is providing the needed highly secure keys through the introduction of quantum key distribution QKD when the quantum computing becomes a reality. However, the quantum cryptography and the QKD are challenged in many ways, not only to provide the advanced level of technology but also to overcome many constraints to provide a worldwide practical distribution system as well as to provide the efficiency to overcome the very modest size of the quantum keys. In this paper, practical factors affecting realistic QKD are investigated supported by related simulation based analysis.