Research On The Method Of User Attribute Update And Revocation In Cloud Storage Access Control Of Smart Grid

With the rapid development of smart grid technology,the emergence of large power data will make the growth of data explosion in power system.In the face of massive,distributed and multi-source heterogeneous information,the existing power system is difficult to meet the storage requirements of smart grid information.Cloud storage system has a great advantage in the storage and sharing of massive data,but also for the smart grid cloud storage system data security risks.Therefore,to ensure the security of data becomes an urgent problem to be solved in the smart grid cloud storage system.Access control technology can prevent unauthorized users access to system resources,and ensure the security of data.Attribute based access control can achieve complex and fine-grained access control,which is suitable for intelligent power grid cloud storage system.However,in the practical application of attribute based access control,user attribute revocation is an inevitable problem.Aiming at this problem,this paper studies the attribute based access control in the intelligent grid cloud storage system,and puts forward a new method of revocation of user attributes,which completes the following aspects of the work:(1)The user revocation problem attribute update access control attribute based encryption algorithm based on ciphertext attribute and attribute based user revocation scheme combined with the improved design,a user attribute revocation method,theoretical analysis of the feasibility of the method,improve the efficiency of updating user attributes.(2)Aiming at the problem of updating revocation of user attributes in smart grid,control model for cloud storage system of smart grid access authorization center is given,and the user attributes the proposed revocation algorithm is applied to cloud storage system in smart grid,improve the efficiency of key update.(3)Set up the Spark cloud storage platform of 9 nodes using laboratory equipment,the testing methods of the historical data of a power supply bureau of user attribute update execution efficiency is verified by experiment the design method compared with the traditional method of updating revocation execution time significantly improved user attributes.