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International Journal of Computer Applications

Contemporary Cryptography and Arguments for Classical Cryptography's Endurance alongside the Propitious Quantum Cryptography

R. Sakthi Vignesh, S. Sudharssun, K. J. Jegadish Kumar

Published Feb 25, 2010• 0 citations
Publisher

Abstract

Is the newly born quantum cryptography the ultimate solution for information security?A technique needs to be both theoretically strong and practically viable.But quantum cryptography comes to naught in the latter.We present here some of the quantum"s theoretical weaknesses like lack of digital signatures (or any algorithm) along with its many real time implementation problems.We further pursue with the discussion about the potency of classical cryptography and its splendid capabilities in providing security.

DOI
10.5120/479-786

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Is the newly born quantum cryptography the ultimate solution for information security?A technique needs to be both theoretically strong and practically viable.But quantum cryptography comes to naught in the latter.We present here some of the quantum"s theoretical weaknesses like lack of digital signatures (or any algorithm) along with its many real time implementation problems.We further pursue with the discussion about the potency of classical cryptography and its splendid capabilities in providing security.
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Is the newly born quantum cryptography the ultimate solution for information security?A technique needs to be both theoretically strong and practically viable.But quantum cryptography comes to naught in the latter.Unlike many of the classical cryptosystems in use today, whose security often draws on unproven assumptions about the computational complexity of mathematical problems, the security of quantum cryptography is based on-and employs-the laws of physics.The term -unconditional security‖is used to emphasize the fact that it does not rely on the presumed, yet unproven hardness of somemathematical problem.In this Paper, we present the proof of the unconditional security of the BB84 protocol, as devised by Peter Shor and John Preskill [1].
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Abstract Much of digital data requires long-term protection of confidentiality, for example, medical health records. Cryptography provides such protection. However, currently used cryptographic techniques such as Diffe-Hellman key exchange may not provide long-term security. Such techniques rely on certain computational assumptions, such as the hardness of the discrete logarithm problem that may turn out to be incorrect. On the other hand, quantum cryptography---in particular quantum random number generation and quantum key distribution---offers information theoretic protection. In this paper, we explore the challenge of providing long-term confidentiality and we argue that a combination of quantum cryptography and classical cryptography can provide such protection.
In recent years Quantum Cryptography gets more attention as well as becomes most promising cryptographic field for faster, effective and more secure communications. Quantum Cryptography is an art of science which overlap quantum properties of light under quantum mechanics on cryptographic task instead of current state of algorithms based on mathematical computing technology. Major algorithms for public key encryption and some digital signature scheme such as RSA, El Gamal cryptosystem, hash function are vulnerable at quantum adversaries. Most of the factoring problem can be broken by Shore's algorithm and quantum computer threatens other hand discrete logarithm problem. Our paper describes why modern cryptography contributes quantum cryptography, security issues and future goals of modern cryptography.
The rapidly advancing computational capacity of modern computers is making traditional encryption techniques more and more susceptible in the ever-changing field of cybersecurity. Using the ideas of quantum mechanics, quantum cryptography presents a viable way to improve security by introducing protocols that are impervious to hacking attempts based on classical computation. This paper offers an extensive overview of newly developed quantum cryptography methods intended to protect digital communication against present and potential dangers, such as those originating from quantum computers. The potential of key protocols like post-quantum cryptography and quantum key distribution (QKD) to supplement or replace current encryption techniques is investigated. The report outlines the benefits of quantum cryptography, such as its capacity to safeguard wide-scale networks, its ability to detect eavesdropping in real-time, and its unbreakable encryption. It also covers the real-world difficulties in putting these protocols into practice, like budgetary constraints, infrastructure needs, and technology constraints. This survey highlights the critical necessity to implement quantum cryptography solutions as a foundation for future-proof cybersecurity frameworks as the world draws closer to the era of quantum computing