Social Credit Management System Based On Block Chain Technology

China's social credit system started late,but the problem of social credit is bigger.A good social credit system can effectively promote the development of social economy,culture and other aspects.In addition,in the foreseeable future,personal credit information will become valuable personal digital assets,and good management of personal credit will create considerable economic benefits.However,in today's social conditions,credit costs are rising,personal information disclosure and other issues are becoming more and more serious,and a set of effective methods are urgently needed to deal with these problems.Block chain technology is a comprehensive distributed technology,which is rising in recent years.Its unalterable chain structure and cryptographic trust mechanism and consensus mechanism can provide a secure and reliable information security system.Its natural trust mechanism and social credit management have a very high degree of consistency.The main purpose of this paper is to combine block chain technology with social credit system and explore a new social credit management system based on block chain technology.This paper focuses on block chain technology,studies consensus mechanism,encryption means and other technical issues,and designs a set of social credit management system based on alliance chain.In order to meet the business requirements,after studying the characteristics of block chain system,this system innovatively designs authorization operation based on key transaction,which enables each authorization operation in the system to record efficiently,safely and quickly in the block chain network,and uses the basic three-tier structure of front-end-back-end-block chain network to design the system as a whole.In addition to the alliance chain of the main part of the system,in order to make the system scalable and practical,a private chain within the organization and a public chain for future market applications are preliminarily designed.In the aspect of security control,the main body of the system adopts the role-based authority management strategy,and uses domestic SM2 and SM4 to encrypt the data on the block chain.In addition,a scheme based on homomorphic encryption is designed for the interaction between the main body system and the data on the market-oriented public chain.The technology of HTML and JavaScript will be used in the front-end of the system,the background processing module will be designed in JAVA language,and the block chain network will be deployed in the super-book fabrics framework.Through this attempt,this paper hopes to explore more possibilities of the application of block chain technology and the promotion space of social credit system,to solve the problems of high cost of social credit,difficult credit management and easy disclosure of personal informat...