Research Of Data Integrity Verification Scheme For Secure Dedulication In Smart Grid Cloud Storage

With the development of the smart grid,the connection between the power system and the computer industry will become closer and closer,and the data that needs to be processed will become larger and larger,and the traditional data storage can not meet the current requirements.Therefore,it is necessary to introduce the service mode and technology mode of cloud computing to solve the problem of massive data in power system.However,the data stored on the cloud server is not secure,it requires integrity and confidentiality protection to avoid unauthorized tampering with unauthorized users.Thus,this paper has completed the following work:1.In order to solve the data integrity and confidentiality of the Smart Grid Advanced Metering Infrastructure(AMI),this paper proposes an efficient AMI data integrity verification scheme based on cloud computing technology.The scheme adopts the homomorphic authentication code technology,which effectively reduces the computational overhead and communication cost to verify response proof information.In combination with random masking code technology,the security of the user's original power consumption data on the cloud server is protected,thereby ensuring the user's power privacy.The analysis results show that the scheme can effectively reduce the computational overhead and communication overhead in the verification process while ensuring the integrity and confidentiality of cloud storage data.2.Because most of the power data is redundant data,and data deduplication technology is needed to remove duplicate data to save cloud storage costs and management costs.Therefor,In order to solve the problem of data deduplication and data integrity in smart grid cloud storage,a data integrity verification scheme which can support security deduplication is proposed in the context of smart grid cloud storage.This scheme refers to an efficient and safe deduplication method based on the bloom filter,and by adopting file-level deduplication strategy between users and block-level deduplication strategy within users,it solves the problem of linear growth caused by the increase in the number of keys and the increase in the number of data sharing users.In addition,the secure deduplication method is combined with S-PDP integrity verification mechanism,data segmentation and random sampling strategy,to realize the security deduplication and integrity verification of smart grid clients.By using erasure correction code,users can repair the damaged data.The analysis results show that this scheme can effectively reduce the computing cost and communication cost while ensuring that the cloud storage data of smart grid can besecure deduplicated and integrity verified.3.This paper designed a smart grid cloud platform architecture based on hadoop and built a pseudo-distributed cloud computing platform based on hadoop under the Linux virtual operating system for simulation experiments.The experimental results show that the proposed scheme has lower computational overhead and Communication overhead.