Multiparty Quantum Direct Secret Sharing of Classical Information with Bell States and Bell Measurements

2018 ◽  
Vol 57 (5) ◽  
pp. 1559-1571 ◽  
Author(s):  
Yun Song ◽  
Yongming Li ◽  
Wenhua Wang
2012 ◽  
Vol 26 (20) ◽  
pp. 1250122 ◽  
Author(s):  
TIAN-YIN WANG ◽  
XIAO-QIU CAI

We present a multiparty quantum secret sharing scheme of classical information with Bell states and decoy states. This scheme can save a lot of photons because eavesdropping checks are performed only twice; in addition, it has the advantage of high intrinsic efficiency for qubits because every Bell states can generate two bits of classical secret information; moreover, only the dealer and one of the agents are required to store photons; most important of all, this scheme can resist all the attacks that have been proposed.


2011 ◽  
Vol 284 (6) ◽  
pp. 1711-1713 ◽  
Author(s):  
Tian-Yin Wang ◽  
Qiao-Yan Wen ◽  
Fu-Chen Zhu

2018 ◽  
Vol 32 (25) ◽  
pp. 1850294 ◽  
Author(s):  
Bingren Chen ◽  
Wei Yang ◽  
Liusheng Huang

A recent paper proposed a semi-quantum secret sharing (SQSS) scheme based on Bell states [A. Yin et al., Mod. Phys. Lett. B. https://doi.org/10.1142/S0217984917501500 ]. This protocol was presumed that only the sender has the quantum power and all participants perform classical operations. However, we find this protocol is not that secure as it is expected. We can utilize the intercept-resend method to attack this scheme. Then, we give an improvement strategy based on semi-quantum key distribution, which ensures that the new scheme resists the attack we have proposed.


2012 ◽  
Vol 12 (3&4) ◽  
pp. 253-261
Author(s):  
Satyabrata Adhikari ◽  
Indranil Chakrabarty ◽  
Pankaj Agrawal

In a realistic situation, the secret sharing of classical or quantum information will involve the transmission of this information through noisy channels. We consider a three qubit pure state. This state becomes a mixed-state when the qubits are distributed over noisy channels. We focus on a specific noisy channel, the phase-damping channel. We propose a protocol for secret sharing of classical information with this and related noisy channels. This protocol can also be thought of as cooperative superdense coding. We also discuss other noisy channels to examine the possibility of secret sharing of classical information.


2016 ◽  
Vol 30 (10) ◽  
pp. 1650130 ◽  
Author(s):  
Gan Gao ◽  
Yue Wang ◽  
Dong Wang

Based on the assumption of a perfect qubit, Boyer et al. proposed a novel semiquantum key distribution protocol [Phys. Rev. Lett. 99 (2007) 140501], in which quantum Alice shares a secret key with classical Bob. In this paper, we use Bell states to propose a multiparty semiquantum secret sharing (MSQSS) protocol, in which only the boss is quantum and all agents are classical. Classical agents are restricted to performing measurements in a computational basis and rearranging orders of qubits. Unless all classical agents collaborate, no subset of them can obtain the secret of the quantum boss. Also, we show that this proposed protocol is secure against eavesdropping.


2018 ◽  
Vol 32 (09) ◽  
pp. 1850117 ◽  
Author(s):  
Gan Gao ◽  
Yue Wang ◽  
Dong Wang

In the paper [Mod. Phys. Lett. B 31 (2017) 1750150], Yin et al. proposed a semi-quantum secret sharing scheme by using Bell states. We find that the proposed scheme cannot finish the quantum secret sharing task. In addition, we also find that the proposed scheme has a security loophole, that is, it will not be detected that the dishonest participant, Charlie attacks on the quantum channel.


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