Research On Access Control Scheme Of Logistics Big Data Based On Attribute-based Encryption

Cloud computing has become one of the research hotspots in the field of information technology based on its innovative advantages such as flexibility and high scalability.At present,cloud storage is one of the fastest growing applications in the field of cloud computing.In order to provide convenient data sharing and save management costs,users or enterprises store a large amount of data on the cloud platform,and cloud service provider act as data manager.With the rapid development of cloud computing,the logistics industry has also become an important part of China's economic development,thus deriving the intelligent logistics industry.Enterprises can share massive logistics information through the logistics cloud.However,cloud service providers are not completely reliable.Th,how to ensure the confidentiality of data,avoid data access and tampering by illegal users,achieve fine-grained access control,access data efficiently,and make full use of computing and storage resources in cloud computing environment is one of the issues that enterprises must consider when choosing logistics cloud.In order to access data safely and efficiently,a CP-ABE access control scheme based proxy is proposed,which includes five components: cloud service provider,data owner,data user,proxy decryption server and trusted third party.This scheme can effectively reduce the user's decryption overhead and support the direct revocation of user attributes while guaranteeing fine-grained access control of data.An improved decryption key generation method is proposed to solve the problem of data leakage caused by illegal stealing of user's private key in traditional CP-ABE scheme.Compared with other CP-ABE schemes,this scheme has better advantages in the performance of user decryption.Considering the security of logistics information and the technical realization of logistics cloud system,this paper proposes a logistics cloud access control scheme based on attribute-based encryption.This scheme combines symmetric encryption with attribute-based encryption.Data owner encrypts data with symmetric encryption key,and then encrypts symmetric key with attribute-based encryption.This scheme effectively reduces the computational overhead of users encrypting and decrypting large amounts of data,and proves that the scheme is selective plaintext attack security.Finally,the design and implementation of each function module of the logistics cloud system based on attribute-based encryption are elaborated in detail,and relevant functional tests are carried out to prove the availability and operability.