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Kluwer Academic Publishers eBooks

Quantum Cryptographic Algorithm for Classical Binary Information

Nanrun Zhou, Guihua Zeng

Published Jan 19, 2006• 0 citations
Publisher

Abstract

Based on quantum computation, a novel quantum cryptographic algorithm that can be used to encrypt classical message is proposed. The security and the physical implementation of this algorithm are analyzed in detail. It is shown that the algorithm can prevent quantum attack strategy as well as classical attack strategy. There are multiple advantages in using the proposed algorithm, most important of which is that it can be implemented with the current technology.

DOI
10.1007/1-4020-7987-7_27

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Based on quantum computation, a novel quantum cryptographic algorithm that can be used to encrypt classical message is proposed. The security and the physical implementation of this algorithm are analyzed in detail. It is shown that the algorithm can prevent quantum attack strategy as well as classical attack strategy. There are multiple advantages in using the proposed algorithm, most important of which is that it can be implemented with the current technology.
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A realizable quantum encryption algorithm for qubits is presented by employing bit-wise quantum computation. System extension and bit-swapping are introduced into the encryption process, which makes the ciphertext space expanded greatly. The security of the proposed algorithm is analysed in detail and the schematic physical implementation is also provided. It is shown that the algorithm, which can prevent quantum attack strategy as well as classical attack strategy, is effective to protect qubits. Finally, we extend our algorithm to encrypt classical binary bits and quantum entanglements.
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This paper explores the impact of quantum computing on modern information security technologies, especially the threat to traditional encryption methods. The parallel processing capability of quantum computing and Shor algorithm make traditional encryption methods face the risk of being cracked. To address this challenge, this paper introduces novel cryptographic methods based on quantum computing, including quantum walking (QW) and quantum entanglement based cryptographic schemes, as well as quantum attack-resistant cryptographic algorithms (PQC). The computing principles, advantages and disadvantages of NTRUEncrypt and Lattice-based encryption algorithms are discussed in detail, and the application and prospect of these new encryption methods in information security are analyzed.
Cryptography, the practice of concealing messages for private exchange, has evolved significantly to address the challenges posed by new communication methods. In today`s digital world, cryptography has become the cornerstone of cybersecurity, using advanced mathematics like number theory and computational complexity to protect digital information through algorithms. The upcoming arrival of quantum computers poses a serious threat to traditional cryptographic methods, especially those based on asymmetric key cryptography. Quantum Safe Cryptography (QSC) represents the next step in information security, designed to develop cryptographic systems that can withstand attacks from both quantum and classical computers. As quantum computing moves from theory to reality, it`s becoming clear that current cryptographic methods based on integer factorization and discrete logarithm problems are vulnerable to quantum algorithms like Shor`s algorithm. This study highlights the security risks that quantum computing poses to existing encryption methods and proposes a comprehensive approach to quantum-safe cryptography. The transition to quantum-resistant algorithms involves replacing vulnerable cryptographic systems with alternatives that can resist quantum computational attacks. Current analysis shows that while asymmetric key cryptography faces immediate vulnerability, symmetric key algorithms and hash functions remain relatively secure in the near term with appropriate adjustments. Quantum cryptography, which directly uses quantum mechanical principles, offers highly secure encryption mechanisms, notably Quantum Key Distribution (QKD). This research aims to enhance the security of digital infrastructure against quantum threats by evaluating hybrid cryptographic implementations that combine classical and quantum-resistant approaches for optimal security.