Research On Access Control Of Attributes-based In Cloud Storage Of Smart Distribution Grid

Smart distribution grid as an important part of the smart grid architecture, its data security largely determines the overall security of the smart grid. With the improvement of the automation technology, smart distribution grid data will be more and more, traditional data storage platform has been unable to meet the smart distribution grid information storage requirements, massive data value for monitoring and maintenance will be much higher. Cloud storage has obvious advantage in massive data storage and sharing, but it also brings data security risks to the smart distribution grid. Therefore, the security of data cloud storage system in intelligent distribution grid has become a problem that calls for immediate solution. Access control technology is one of the core strategies of safety protection, and it has important practical significance to guarantee the security of data in cloud storage of smart distribution grid. In this subject, an in-depth study of access control scheme for cloud storage of smart distribution grid has been done, the following work has been completed:First of all, this paper conducts researches on the situation that multiple business systems of smart distribution grid exist at the same time, analyzes characteristics of independence among different systems and many users. In view of challenges of massive data, complex, fine-grained for the access control in cloud storage platform, this paper chooses access control scheme based on attributes, and describes encryption technology based on attributes, lays the foundation of access control model based on attribute in cloud storage of smart distribution grid that described in detail below.Secondly, this paper analyzes the problem that cloud can’t verify the users’ permissions to write and update in access control based on attribute, combines the encryption algorithm based on the attribute of cipher-text and signature algorithm based on attribute, designs an access control scheme which validates the users’ permissions to read and write. Theoretical analysis shows the safety and validity of the scheme.Finally, in the case of a large number of application systems in the cloud storage platform of samrt distribution grid and the characteristics that the whole system structure of distribution grid is relatively stable, this paper designs a kind of access control scheme in cloud storage which can be applied to large-scale, fine-grained access project based on attribute. Uses the laboratory equipment to build a Hadoop cluster with nine nodes, realizes an access control prototype system based on attribute which is designed in this paper, and validates the feasibility of the scheme.