Hyperledger Fabric Blockchain Security Research And Middleware Development

It has high practical value for the research of Fabric security.Based on the overall architecture of the Fabric blockchain,this paper conducts an in-depth study on the security components represented by CA,and proposes various security solutions that can be adopted in the development of Fabric application software.According to the security of the underlying architecture of the blockchain network,the MSP self-configuration and the modification of the server certificate information;according to the security of the user's main body,the Fabric CA certificate user management system is researched to improve the storage security of the certificate key,and the user extended attributes are designed to meet the actual production requirements;for the security of the chain information operation,multi-level access control strategy is implemented based on the user attribute.As a practice of security research,many types of security middleware programs have been designed and developed.Including secure connection middleware,it is convenient to connect the blockchain network while realizing user certificate security protection;CA certificate user management middleware realizes safer registration,query and management functions for users with extended attributes;blockchain query middleware with access control ensures that important blockchain information is safely read and viewed;chaincode function call middleware supporting access control ensure that different users in the blockchain system legally execute the chaincode function within their scope of authority,this ensures the security of the data on the chain.The function of the security middleware can meet the various needs of the development of the fabric blockchain project and verify the effectiveness of the security research results.