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中国邮电高校学报：英文版

Quantum Secret Sharing Based on Multi-Particle Entanglement

Fen-Zhuo Guo, Wen Qiao-yan

Published Jan 1, 2005• 4 citations
OpenAlex

Abstract

We propose a class of Quantum Secret Sharing (QSS) scheme based on multi-particle entanglement. The eavesdropping analysis shows that the scheme is secure. Its efficiency is 100% in principle. That is, one multi-particle entanglement can be used to share a bit of classical key among the parties. As a result, it is resource saving. The protocol can also be adjusted to split a classical secret message directly. The implementation of it is relatively applicable.

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We propose a class of Quantum Secret Sharing(QSS)scheme based on multi-particle entanglement.The eavesdropping analysis shows that the scheme is secure.Its efficiency is 100% in principle.That is,one multi-particle entanglement can be used to share a bit of classical key among the parties.As a result,it is resource saving.The protocol can also be adjusted to split a classical secret message directly.The implementation of it is relatively applicable.

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A quantum secret sharing scheme is proposed by making use of quantum registers. In the proposed scheme, secret message state is encoded into multipartite entangled states. Several identical multi-particle entanglement states are generated and each particle of the entanglement state is filled in different quantum registers which act as shares of the secret message. Two modes, i.e. the detecting mode and the message mode, are employed so that the eavesdropping can be detected easily and the secret message may be recovered. The security analysis shows that the proposed scheme is secure against eavesdropping of eavesdropper and cheating of participants.

Chinese Physics Letters•Apr 1, 2007•17 citations
We propose a class of Quantum Secret Sharing (QSS) scheme based on multi-particle entanglement. The eavesdropping analysis shows that the scheme is secure. Its efficiency is 100% in principle. That is, one multi-particle entanglement can be used to share a bit of classical key among the parties. As a result, it is resource saving. The protocol can also be adjusted to split a classical secret message directly. The implementation of it is relatively applicable.
A multiparty quantum secret sharing (QSS) protocol of classical messages (i.e., classical bits) is proposed by using swapping quantum entanglement of Bell states. The secret messages are imposed on Bell states by local unitary operations. The secret messages are split into several parts, and each part is distributed to a separate party so that no action of a subset of all the parties without the cooperation of the entire group is able to read out the secret messages. In addition, dense coding is used in this protocol to achieve a high efficiency. The security of the present multiparty QSS against eavesdropping has been analyzed and confirmed even in a noisy quantum channel.
Multi-party quantum secret sharing scheme with high efficient based on entanglement states is proposed and analyzed. A three-party which is presented shares a sequence of joint key bits. In this scheme, a general proof of the security against eavesdropping for three-party quantum secret sharing based on entanglement swapping is provided. The scheme which is showed is secure against a dishonest participant's intercept-and-resend attack and eavesdropper's entangle auxiliary-particles attack. In case of eavesdropping attacks with full information again, the detection bit needs to be transmitted except those for detection, the total efficiency of the scheme approaches to 100%. The protocol can be generalized to N-party system by using N-partite entanglement states.
In this paper, we propose an efficient multi-party quantum secret sharing scheme based on GHZ entangled state. The participants in this scheme are divided into two groups, and share secrets as a group. There is no need to exchange any measurement information between the two groups, reducing the security problems caused by the communication process. Each participant holds one particle from each GHZ state; it can be found that the particles of each GHZ state are related after measuring them, and the eavesdropping detection can detect external attacks based on this characteristic. Furthermore, since the participants within the two groups encode the measured particles, they can recover the same secrets. Security analysis shows that the protocol can resist the intercept-and-resend attack and entanglement measurement attack, and the simulation results show that the probability of an external attacker being detected is proportional to the amount of information he can obtain. Compared with the existing protocols, this proposed protocol is more secure, has less quantum resources and is more practical.
A quantum secret sharing scheme is proposed by making use of quantum registers. In the proposed scheme, secret message state is encoded into multipartite entangled states. Several identical multi-particle entanglement states are generated and each particle of the entanglement state is filled in different quantum registers which act as shares of the secret message. Two modes, i.e. the detecting mode and the message mode, are employed so that the eavesdropping can be detected easily and the secret message may be recovered. The security analysis shows that the proposed scheme is secure against eavesdropping of eavesdropper and cheating of participants.