A tree-type multi-party semi-quantum secret sharing method based on d-level single-particle states

Abstract

The invention extends the concept of half-quantum secret sharing to a d-level quantum system, and proposes a tree-type multi-party half-quantum secret sharing method based on a d-level single-particle state. In the method of the present invention, the particles prepared by the quantum method are transported in a tree form, and the classical method does not need to have measurement capabilities. The method of the present invention is safe against some well-known attacks, such as intercept-resend attack, measurement-resend attack, entanglement-measurement attack and participant attack.

Description

technical field [0001] The invention relates to the field of quantum cryptography. The invention designs a tree type multi-party semi-quantum secret sharing method based on the d-level single particle state, and realizes sharing a secret between one party and n parties. Background technique [0002] The security of classical cryptography depends on the computational complexity of mathematical problems, which is vulnerable to the powerful computing power of quantum parallel computing. Fortunately, the quantum cryptography invented by Bennett and Brassard[1] in 1984 relies on the laws of quantum mechanics to ensure its unconditional security in theory. Quantum cryptography has attracted a lot of attention and established many interesting branches, such as quantum key distribution (Quantum key distribution, QKD) [1-7], quantum secure direct communication (Quantum secure direct communication, QSDC) [8-11] , Quantum secret sharing (Quantum secretsharing, QSS) [12-24], etc. [...

AI Technical Summary

Problems solved by technology

However, all existing SQSS methods are only applicable to two-level quantum systems

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