Memory-free quantum secret sharing protocol with collective detection

Wang, Shihao; Liu, Bin; Huang, Wei; Xu, Bingjie; Li, Yang

doi:10.1007/s11128-023-03897-3

Cited by 4 publications

(3 citation statements)

References 32 publications

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“…Quantum technology is developing rapidly, with an increasing number of quantum multi-party secret sharing protocols [9][10][11][12][13][14][15][16][17][18] based on QKD networks being proposed. These QSS protocols afford the secure and confidential sharing of a secret parameter among the validator nodes, which unrelated parties cannot access outside the list of validator nodes (LR).…”

Section: Quantum Secret Sharing (Qss) Protocolmentioning

confidence: 99%

“…In each consensus cycle, the leader node uses the VDF to obtain a random number R. Each candidate node, i.e., validator nodes that have not been granted the bookkeeping right in a consensus round, utilizes the unique random number and its ID to calculate the hash value for competing for the bookkeeping right. The highest hash value holder is elected as the leader node, and the leader node's identity is shared secretly among the validator nodes through a quantum multi-party secret sharing protocol [9][10][11][12][13][14][15][16][17][18]. After the election of the new leader node LN+1, LN+1 starts taking over the transaction queue from LN, LN+1 packages transactions to generate the next block.…”

Section: Figure 2 Leader Node Campaign Schemamentioning

confidence: 99%

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RQPoA: A random quantum PoA Consensus Mechanism in Blockchain Based on Quantum Methods

WANG,

Li,

Liu

et al. 2024

Preprint

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As a distributed network, the operational efficacy of a blockchain system relies heavily on the consensus mechanism it adopts. Among the mainstream consensus mechanisms in blockchain, proof-of-authority (PoA) is appealing for its post-quantum security and block generation efficiency and, therefore, has gained academic attention. Nevertheless, the traditional PoA faces three major problems: (1) Low decentralization. The allocation of bookkeeping rights has a low degree of decentralization in the blockchain network. (2) Low availability. The total exposure of the leader node makes it susceptible to centralized attacks, leading to a single point of failure (SPOF) dilemma and reducing the availability of the entire blockchain system. (3) Non-robustness (low fault tolerance). Generating a new block must be done jointly by all validator nodes, with this voting process potentially delayed due to invalid voter participation. To address these issues, this paper improves PoA and proposes a new consensus mechanism scheme, the random quantum proof of authority (RQPoA). First, RQPoA develops the leader node election algorithm with a verifiable delay function (VDF) to realize fair and impartial leader node selection, enforcing the blockchain’s decentralization level. Second, RQPoA adopts the multi-party quantum secret sharing protocol to share the leader node’s identity among validator nodes confidentially. This strategy eliminates SPOF caused by the leader node, increasing the blockchain system availability. Third, RQPoA incorporates a candidate block voting protocol based on a quantum threshold signature to complete the block proposal, which is fault-tolerant and thus enhances the blockchain system's robustness. A security analysis of RQPoA demonstrates its security, efficiency, and better fault tolerance than related quantum consensus mechanisms. In conclusion, the RQPoA makes a useful exploration for researching secure consensus mechanisms in the post-quantum era and enriches the related research.

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Section: Quantum Secret Sharing (Qss) Protocolmentioning

confidence: 99%

Section: Figure 2 Leader Node Campaign Schemamentioning

confidence: 99%

RQPoA: A random quantum PoA Consensus Mechanism in Blockchain Based on Quantum Methods

WANG,

Li,

Liu

et al. 2024

Preprint

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“…With the development of technology, quantum communication is attracting more and more scholars' attention due to its high security based on quantum mechanical properties. In the past few years, based on quantum entanglement, significant progress has been made in various fields of quantum communication, such as quantum key distribution [1,2], quantum teleportation [3][4][5], quantum remote state preparation [6,7], and quantum secret sharing [8,9].…”

Section: Introductionmentioning

confidence: 99%

Hierarchical controlled cyclic quantum teleportation

Yang

2023

Phys. Scr.

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In this paper, a new hierarchical controlled cyclic quantum teleportation scheme is proposed, which can be applied to hierarchical quantum information transmission in a variety of application scenarios. In this scheme, Charlie in the low-level position can only complete simple sending tasks under the control of Bob, while Alice in the middle-level position needs to complete ordinary sending tasks under the control of Charlie and Diana; Bob in the high-level position needs to complete important tasks sent to Charlie under the control of the controller Diana and the high-level controller Eve. Diana and Eve can be regarded as both internal middle and high-level managers as well as different external regulators. Finally, this paper also discusses the number of controllers and their control capabilities, and briefly proposes a simplified hierarchical cyclic quantum teleportation scheme, which provides more options for users with different needs.

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State transfer on the multi-access channel network

Yan,

Luo,

2024

Quantum Inf Process

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Memory-free quantum secret sharing protocol with collective detection

Cited by 4 publications

References 32 publications

RQPoA: A random quantum PoA Consensus Mechanism in Blockchain Based on Quantum Methods

RQPoA: A random quantum PoA Consensus Mechanism in Blockchain Based on Quantum Methods

Hierarchical controlled cyclic quantum teleportation

State transfer on the multi-access channel network

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