A proactive quantum secret sharing scheme based on GHZ state

2015 ◽  
Vol 29 (27) ◽  
pp. 1550165 ◽  
Author(s):  
Huawang Qin ◽  
Xiaohua Zhu ◽  
Yuewei Dai
Keyword(s):  
Secret Sharing ◽  
Quantum Secret Sharing ◽  
Ghz State ◽  
The Other ◽  
Secret Sharing Scheme ◽  
Ghz States ◽  
Sharing Scheme ◽  
Quantum Secret Sharing Scheme

A proactive quantum secret sharing scheme is proposed, in which the participants can update their shadows periodically. In an updating period, one participant randomly generates the GHZ states and sends the particles to the other participants, and the participants update their shadows according to the measurement performed on the particles. After an updating period, each participant can change his shadow but the secret is changeless. The old shadows will be useless even if they have been stolen by the attacker. The proactive property is very useful to resist the mobile attacker.

scholarly journals Standard (3, 5)-threshold quantum secret sharing by maximally entangled 6-qubit states

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yinxiang Long ◽  
Cai Zhang ◽  
Zhiwei Sun
Keyword(s):  
Secret Sharing ◽  
Quantum Secret Sharing ◽  
The Other ◽  
Entangled States ◽  
Secret Sharing Schemes ◽  
Secret Sharing Scheme ◽  
Sharing Scheme ◽  
Qubit States ◽  
Quantum Secret Sharing Scheme

AbstractIn this paper, a standard (3, 5)-threshold quantum secret sharing scheme is presented, in which any three of five participants can resume cooperatively the classical secret from the dealer, but one or two shares contain absolutely no information about the secret. Our scheme can be fulfilled by using the singular properties of maximally entangled 6-qubit states found by Borras. We analyze the scheme’s security by several ways, for example, intercept-and-resend attack, entangle-and-measure attack, and so on. Compared with the other standard threshold quantum secret sharing schemes, our scheme needs neither to use d-level multipartite entangled states, nor to produce shares by classical secret splitting techniques, so it is feasible to be realized.

Comment on “Three-party quantum secret sharing based on d-dimensional Bell state”

2019 ◽  
Vol 33 (28) ◽  
pp. 1950347
Author(s):  
Gan Gao ◽  
Hong-Ru Song
Keyword(s):  
Secret Sharing ◽  
Bell State ◽  
Quantum Secret Sharing ◽  
The Other ◽  
Bell States ◽  
Secret Sharing Scheme ◽  
Sharing Scheme ◽  
Quantum Secret Sharing Scheme

In the paper [Mod. Phys. Lett. B 33 (2019) 1950023 ], Qin et al. proposed a three-party quantum secret sharing scheme based on [Formula: see text]-dimensional Bell states. We study the security of the proposed scheme and find that it is not secure, that is, one sharer can obtain Alice’s secret messages without the help of the other sharer.

A SIMPLE AND SECURE QUANTUM SECRET SHARING SCHEME BASED ON PRODUCT STATES

2012 ◽  
Vol 10 (03) ◽  
pp. 1250031 ◽  
Author(s):  
JUAN XU ◽  
HANWU CHEN ◽  
ZHIHAO LIU
Keyword(s):  
Secret Sharing ◽  
Partial Information ◽  
Information Leakage ◽  
Quantum Secret Sharing ◽  
Secret Sharing Scheme ◽  
Distribution Strategy ◽  
Sharing Scheme ◽  
Coding Method ◽  
Orthogonal Set ◽  
Quantum Secret Sharing Scheme

Based on an orthogonal set of product states of two three-state particles, a new quantum secret sharing scheme is proposed, which uses a novel distribution strategy so that continuous and independent measurements, rather than particle-wise coordinated ones, are performed. As a result, it is convenient and efficient to implement. The scheme is also secure against several common attacks and gets rid of partial-information leakage due to the revised coding method. Moreover, the quantitative analysis shows that the security can be further improved by using more product states from appropriate multiple sets.

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