A Quantum Blind Signature Method and System Based on Bell State Entanglement Exchange

Abstract

The invention belongs to the technical field of network information processing, and discloses a quantum blind signature method and system based on Bell state entanglement exchange. Based on the Bell state entanglement transformation relationship, a quantum blind signature protocol is proposed, and the message owner executes Pauli on the particle sequence. The operation completes the transition from classical messages to quantum messages; the three participants ensure the absolute security of the protocol through the shared quantum keys; through the analysis of Ben Amin’s scheme, it can be known that this protocol meets the definition of blind signature, and through the efficiency analysis, it can be known that n bits are completed For the blind signature of messages, the particle efficiency of this protocol is 14.3%; through the strict security analysis process, it is proved that this protocol can realize the blind signature function, and can complete the whole signature process with better particle efficiency; the present invention chooses the Bell state Particles are used as information carriers, which avoids the complicated preparation cost of three or more particle states.

Description

technical field [0001] The invention belongs to the technical field of network information processing, and in particular relates to a quantum blind signature method and system based on Bell state entanglement exchange. Background technique [0002] Currently, the closest prior art: [0003] In 1984, Bennett and Brassard proposed the first quantum cryptography protocol, the BB84 protocol [1], and researchers have worked on a large number of quantum cryptography protocols and quantum communication protocols, including the quantum key distribution protocol (QKD) [2-4] , Quantum Direct Secure Communication Protocol (QSDC), Quantum Secret Sharing Protocol (QSS), Quantum Privacy Query Protocol (QPQ), etc. [0004] The concept of electronic signature was first proposed by Diffie and Hellman in 1976. In 1983, Chaum et al. proposed the concept of blind signature based on electronic signature. The basic requirements of the blind signature protocol are: (1) Unforgeability, no one can...

AI Technical Summary

Problems solved by technology

The basic requirements of the blind signature protocol are: (1) Unforgeability, no one can forge the signature except the signer

(2) Non-repudiation, neither the message owner nor the signer can deny their operation on the message

(3) Blindness, the signer cannot match his signature with the message

[0015] How to solve the problem of low particle usage efficiency and transmission efficiency

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