Reseach On Privacy Protection And Secure Storage Of Cloud Computing In Smart Grid

Traditional power system is unable to meet the new demand in intelligence and resource optimization as the developmenting of power technology. Smart Grid, which has become a new direction of the power development all over the world, brings informatization, automation and interactive into the power system. Cloud computing is a new computing model, which integrates heterogeneous mass of computing resources and provides that to users in the cloud environment in the form of services. Cloud computing, with many advantages like strong computing power and storage capability, flexible and reliable, low cost, can be applied in smart grid system to cope with the development challenges faced by intelligent power system.However, cloud data security problem has become increasingly prominent and important factor restricting the development of cloud computing. What’s worse, data leakage damage and economic losses are more serious in power system. At present, cloud computing is facing security problems of many types, this thesis mainly focus on privacy protection and security cloud storage.First of all, this thesis introduces a trusted third party and proposes a method to protect data privacy using block storage, whose time cost is mainly decided by the mapping algorithm and connection overhead, which is associated with the block number. In Smart Gird, we mostly protect users’ privacy data rather than all data in ever column, which makes more compatible strategies and costs lower time wheir compared with the traditional data encryption.Secondly, this thesis describes the design of a secure database, SecurityMongoDB, which is suitable for smart grid.The traditional method to protect date security is stored encrypted data in the database, and decrypt the data before query.In the process above, the data is in plain text for a period of time, which increases the risk of data leakage. SecurityMongoDB proposes an encryption strategy to keep the sensitive data storage encrypted without affecting the database query operation. At the same time, this thesis builds a key chain mechanism for multi subject access control using users’ password to protect the unlogged users’ data security wheir the system is suffering a serious invasion.Finally, this thesis designs a smart grid customer management web system combining with the Java Web technology to verify the correctness of the SecurityMongoDB encryption strategy.