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信息安全与通信保密

Networking quantum key distribution implemented by tri-particle state

GuihuaZeng, FuchenZhu, JianpingFan

Published Jan 1, 2005• 0 citations
OpenAlex

Abstract

A quantum key distribution scheme for quantum cryptographic network is proposed, which is implemented physically by the Greenberger-Home-Zeilinger (GHZ) triplet state. Its security is guaranteed by the correlation of the GHZ triplet state, results show this protocol is unconditionally secure. The performance of the proposed protocol can reach 100\% in the idea circumstance. Application of the proposed protocol has also been discussed.

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International Conference on Networking and Digital Society (ICNDS)•May 1, 2010•1 citation
A quantum key distribution scheme for quantum cryptographic network is proposed, which is implemented physically by the Greenberger-Home-Zeilinger (GHZ) triplet state. Its security is guaranteed by the correlation of the GHZ triplet state, results show this protocol is unconditionally secure. The performance of the proposed protocol can reach 100% in the idea circumstance. Application of the proposed protocol has also been discussed.
A novel approach to quantum cryptography to be called NQKD, networking quantum key distribution, has been developed for secure quantum communication schemes on the basis of the complementary relations of entanglement Greenberger–Horne–Zeilinger (GHZ) triplet states. One scheme distributes the private key among legal participants in a probabilistic manner, while another transmits the deterministic message with some certainty. Some decoy photons are employed for preventing a potential eavesdropper from attacking quantum channels. The present schemes are efficient as there exists an elegant method for key distributions. The security of the proposed schemes is exactly guaranteed by the entanglement of the GHZ quantum system, which is illustrated in security analysis.
Quantum correlation between two particles and among three particles show nonclassic properties that can be used for providing secure transmission of information. In this paper, we propose two quantum key distribution schemes for quantum cryptographic network, which use the correlation properties of two and three particles. One is implemented by the Greenberger-Horne-Zeilinger state, and another is implemented by the Bell states. These schemes need a trusted information center like that in the classic cryptography. The optimal efficiency of the proposed protocols are higher than that in the previous schemes.
In this paper, we develop, a quantum key distribution protocol based on the Greenberger-Horne-Zeilinger states (GHZs). The particles are exchanged among the users in blocks through two steps. In this protocol, for three-particle GHZs three keys can be simultaneously generated. The advantage of this is that the users can select the most suitable key for communication. The protocol can be generalized to N users to provide N keys. The protocol has two levels for checking the eavesdroppers. Moreover, we discuss the security of the protocol against different attacks.
An authentic digital signature scheme based on the correlation of Greenberger-Horne-Zeilinger (GHZ) states was presented. In this scheme, by performing a local unitary operation on the third particles of each GHZ triplet, Alice can encode message M and get its signature S. Bob performs CNOT operation on the combined GHZ triplets can recovery the message M and directly authenticates Alice's signature S. Our scheme was designed to use quantum secret key to guaranteed unconditional security, as well as use quantum fingerprinting to avoid trick attacks and reduce communication complexity.