A Threshold Signature Scheme Without Trusted Center for Blockchain-Based Medical Cyber-Physical Systems

A Threshold Signature Scheme Without Trusted Center for Blockchain-Based Medical Cyber-Physical Systems | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article A Threshold Signature Scheme Without Trusted Center for Blockchain-Based Medical Cyber-Physical Systems Xianfei Zhou, Jing Huang, Fulong Chen, Yuqing Tang, Canlin Wang, and 3 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-446049/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract With the rapid development of medical information technology, the medical cyber-physical system is undergoing a rapid transformation, and the safe storage and sharing of medical data are facing great challenges. It makes the work of safe medical data storage, privacy protection and data sharing get more difficult. In this paper, we propose the combination of private blockchain and consortium blockchain that can protect information security and realize data sharing. In the system, the medical records of each node are stored in the private blockchain, and the shared data is on the consortium blockchain so as to improve the data storage and reduce data redundancy. And the threshold signature scheme without trusted center is applied in the system. In order to initiate threshold signature, a set of nodes is constructed by the sponsoring doctor, in which the threshold signature process is initiated. When there are no less than $t$ nodes sending part-signatures, the signature can be synthesized to group signature. This scheme can be well applied to the scene of multidisciplinary joint consultation in the medical blockchain. The scheme proposed in this paper has high security and computing efficiency. Technical Communication Medical Cyber-Physical Systems Threshold signature Blockchain Without trust center Full Text Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-446049","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":36984317,"identity":"3ee84594-7a40-4176-9701-7fd8972ede1c","order_by":0,"name":"Xianfei Zhou","email":"","orcid":"","institution":"Wuhu Institute of Technology","correspondingAuthor":false,"prefix":"","firstName":"Xianfei","middleName":"","lastName":"Zhou","suffix":""},{"id":36984318,"identity":"958bc776-e23d-4656-a2ae-9efa173e8ab4","order_by":1,"name":"Jing Huang","email":"","orcid":"","institution":"Anhui Normal 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It makes the work of safe medical data storage, privacy protection and data sharing get more difficult. In this paper, we propose the combination of private blockchain and consortium blockchain that can protect information security and realize data sharing. In the system, the medical records of each node are stored in the private blockchain, and the shared data is on the consortium blockchain so as to improve the data storage and reduce data redundancy. And the threshold signature scheme without trusted center is applied in the system. In order to initiate threshold signature, a set of nodes is constructed by the sponsoring doctor, in which the threshold signature process is initiated. When there are no less than $t$ nodes sending part-signatures, the signature can be synthesized to group signature. This scheme can be well applied to the scene of multidisciplinary joint consultation in the medical blockchain. 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