Arbitration quantum signature design method based on Grover iteration flexible tracking

A design method and quantum technology, applied in the fields of quantum cryptography and quantum signatures, can solve the problems of signature traceability, lack of rigorous dispute resolution mechanism, lack of flexibility in arbitration quantum signatures, and no unified evaluation standard for security, and achieve good fairness. performance and flexibility, optimizing database issues, enhancing operability

Active Publication Date: 2021-08-10
EAST CHINA JIAOTONG UNIVERSITY
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AI Technical Summary

Problems solved by technology

There are some research results on the design and analysis of the former signature scheme, but little and insufficient research on the latter signature scheme based on controlled operations between bits
In particular, there is no rigorous dispute resolution mechanism for signature traceability, and there is no unified evaluation standard for security, which lacks corresponding flexibility for the application of arbitration quantum signatures in various fields

Method used

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  • Arbitration quantum signature design method based on Grover iteration flexible tracking
  • Arbitration quantum signature design method based on Grover iteration flexible tracking
  • Arbitration quantum signature design method based on Grover iteration flexible tracking

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Embodiment Construction

[0044] The arbitration quantum signature design method based on Grover iterative flexible tracing of the present invention specifically includes the following steps A to E.

[0045] Step A: In the proposed semi-quantum quorum signature system, one is the trusted party quorum management party, P 1 ,P 2 ,P 3 ,...,P N-1 For N-1 signing participants; each participant (legal user) can generate a 2n-length random sequence as the participant's secret key ,

[0046] in, , is the secret key of the quorum manager.

[0047] Step B includes:

[0048] B1: First, each signing participant prepares a random sequence and sequence , the sequence length is 2n; then, in Based on the further preparation of a two-particle quantum sequence in the quantum state

[0049] ,in , , ;

[0050] B2: According to the value of , the signature participant pair sequence perform unitary operation , to get a new sequence ;

[0051] B3: At the same time, from four states ...

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Abstract

The invention discloses an arbitration quantum signature design method based on Grover iteration flexible tracking, and the method employs a Grover search algorithm to achieve the purpose that an arbitration management party can find a signer of a problem signature when a signature dispute occurs. In the arbitration process, the arbitration management system and each signature participant negotiate to obtain a final secret key and find a signer with a problem signature, so that a direct'disclosure 'mechanism of an arbitration group signature is avoided. The method is characterized in that a complete arbitration signature verification system is established, an arbitration management system can select whether to disclose the identity of a problem signature signer, and the method has flexible traceability and fairness.

Description

technical field [0001] The invention relates to the fields of quantum cryptography and quantum signatures, in particular to an arbitration quantum signature design method based on Grover iterative flexible tracing. Background technique [0002] Quantum cryptography is a new type of cryptographic system based on cryptography and quantum mechanics, and uses quantum physics methods to realize cryptographic ideas. The application of quantum cryptography in digital signatures, the combination of quantum signatures and quantum computing is a frontier field today, and it has important theoretical significance and application value for the future development of quantum cryptography. [0003] The shortcomings and deficiencies of classical computing in information processing have prompted the rapid development of quantum computing. The emergence of Shor's algorithm and Grover's search algorithm proves that quantum computing has powerful parallel processing capabilities, so scholars u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32H04L9/08
CPCH04L9/3247H04L9/3236H04L9/0852H04L9/085
Inventor 殷爱菡熊梓豪范萍林伟彬艾自建徐鑫
Owner EAST CHINA JIAOTONG UNIVERSITY
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