Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A new quantum electronic contract signing method

An electronic contract and quantum technology, applied in the field of information security, can solve problems such as security and implementation difficulties, no commitment to the contract at this time, fair and honest participants cannot be determined, etc.

Inactive Publication Date: 2019-02-26
LUOYANG NORMAL UNIV
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2008, Czech scholar J.Bouda et al. used quantum anti-jamming equipment to give a simple two-party electronic contract signing scheme [3] , but in terms of fairness, there is a problem that honest participants cannot determine whether the other party has also committed to the contract
However, the current quantum electronic contract signing technology needs to assume that the parties involved exchange signatures on the contract text and related information in advance (there is no commitment to the contract at this time), and its security is closely related to the digital signature technology used
Therefore, if the classical digital signature technology is used, its security is based on mathematical problems, and the disadvantages are as mentioned above. However, the current quantum digital signature technology still has certain difficulties and problems in terms of security and implementation. [5]

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Assume that the quantum states sent by TTP to A and B during the initialization phase are: but At the same time, let the contract C 1 , identification code PIN 1 , time limit t 1 and other agreed information m 1 The hash value of h(C 1 , PIN 1 ,t 1 ,m 1 ) = h 1 ||h 2 =0||1.

[0028] ①A selects Accept-basis to measure the quantum state That is, use the Z base to measure, and the measurement result send to B.

[0029] ②B receives it within time t later, found the first bit of h 1 Same, B further verified and found Then B measures with Accept-basis That is, also use the Z base measurement, and the measurement results Send to A.

[0030] ③A receives it within time t later, found the first bit of h 1 The same, A further verification found that Then A is then measured with Accept-basis That is to measure with the X basis, at this time due to the X basis and the quantum state do not match, A will measure the result as 10 or 11 with the ...

Embodiment 2

[0035] Assume that the quantum states sent by TTP to A and B during the initialization phase are: but At the same time, let the contract C 1 , identification code PIN 1 , time limit t 1 and other agreed information m 1 The hash value of h(C 1 , PIN 1 ,t 1 ,m 1 ) = h 1 ||h 2 =0||1.

[0036] ①A selects Accept-basis to measure the quantum state That is, use the Z base to measure, and the measurement result send to B.

[0037] ② Assume that B has not received it within time t Then B immediately contacts TTP for arbitration.

[0038] ③TTP according to the probability distribution Determine the value If B wants to invalidate the contract, B uses Reject-basis to measure all quantum states Instantly measure with X base (Because the measurement basis does not match the quantum state, 10 or 11 will be obtained with a probability of 0.5 respectively), measured with the Z basis and measure the results or (11,00) to TTP. If A also wants to invalidate the c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A novel quantum electric contact signing method improves the scheme security through an initialization phase, a commitment phase, and an arbitration phase no longer based on mathematics problems of integer factorization or discrete logarithm. The novel method no longer needs both sides to exchange digital signatures on the information such as the contact beforehand, thus the technology of the invention no longer depends on the present quantum digital signature technology, and the scheme efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of information security, and mainly relates to the security protection technology in electronic contract signing. Background technique [0002] Electronic contract signing is the two parties to the contract exchange each other's commitment to the agreed contract through the network. Because of its particularity, electronic contract signing has important applications in e-commerce, which has attracted widespread attention from many experts and scholars at home and abroad. [1] . In traditional contract signing, both parties are present at the same time to sign a copy of the same contract, and both parties' commitment to the contract is generated at the same time. However, the contract signing in the network environment must be asynchronous, so the electronic contract signing must solve the fairness problem, that is, to ensure that after the agreement is over, both parties involved have obtained the other part...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/32H04L9/08
CPCH04L9/0852H04L9/3247
Inventor 王天银蔡晓秋魏春艳刘青青张瑞玲
Owner LUOYANG NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com