Research And Implementation Of Security Mechanism Of Virtual Campus Card Based On Blockchain

As a core infrastructure platform of the school,the campus card system plays an extremely important role in campus life and management.However,the traditional physical campus card has a series of problems,such as easy loss,high cost,cumbersome management,etc.With the deepening of the idea of smart campus construction in colleges and universities and the further improvement of network technology,the idea of "No physical card" has become a major trend in the construction of college one-card system.How to establish an integrated virtual one-card platform and realize tasks such as campus consumption and campus identity recognition has become a hot issue in the research of college one-card system.By analyzing the design framework and technology of existing university campus card system and virtual campus card,this paper proposes a virtual campus card model based on blockchain technology,aiming at the problems of complicated business and difficult docking management of various departments in campus card system,as well as poor security and slow settlement time of virtual campus card based on mobile internet.This model is constructed and expanded on the existing virtual campus card system.It uses a selective data storage method to classify and store data in the blockchain and server,and utilizes the advantages of blockchain technology such as distributed ledger,non-tampering,decentralization,etc.,to realize virtual campus card payment,access control and other functions to enhance the security and timeliness of the virtual campus cards.Due to the diversity of mobile phone use network scenarios,the virtual campus card needs to expose some interfaces of the one-card system on the Internet,which results in that the security requirements of the virtual campus card are much higher than those of the physical campus one-card.This paper fully considers the security of the virtual campus card,and studies on the data transmission of the two-dimensional code card surface,biometric identity authentication mechanism and data storage methods.Two-dimensional code and hybrid encryption technology are combined to ensure the security of information in two-dimensional code and solve anti-counterfeiting problems.At the same time,a way of binding biometric and user key is adopted to generate secure biometric to complete identity authentication,so as to improve the security mechanism of virtual campus card and improve the security of virtual campus card.