Efficient duplicate removal auditing method for cloud storage data

Abstract

The invention discloses a cloud storage data efficient deduplication auditing method, which belongs to the technical field of cloud storage, and comprises the following steps: S1, establishing a cloud storage system, generating parameters of the cloud storage system, and initializing various parameters of the cloud storage system; according to the method, the convergence key is encrypted by using the idea of blind signature and uploaded to the cloud server, the storage and management problems of the convergence key are solved, the data uploaded by the user is subjected to de-duplication operation by using file-level and file-block-level de-duplication modes, the de-duplication granularity is lower, and the de-duplication efficiency is improved. Meanwhile, a file management directory is introduced to manage contents of files and file blocks, convergence keys and legal users, and the efficiency of data deduplication label query is improved by using a Bloom filter.

Description

technical field [0001] The invention belongs to the technical field of cloud storage, and in particular relates to an efficient deduplication audit method for cloud storage data. Background technique [0002] With the development of technology, the amount of data that enterprises and individuals need to store continues to increase, and traditional physical data storage methods such as flash memory and hard disks can no longer meet the needs of enterprises and individuals for large-capacity data storage. And data files are outsourced to cloud server providers for cloud storage to reduce their own computing and storage burden, but it is observed that for a single user or a single transaction, due to the use of different information sources, a large amount of duplicate data will be generated, causing cloud storage. Waste of storage space, so in order to store user data efficiently, cloud storage providers employ data deduplication technology. [0003] Existing data deduplicati...

AI Technical Summary

Problems solved by technology

[0002] With the development of technology, the amount of data that enterprises and individuals need to store continues to increase. Traditional physical data storage methods such as flash memory and hard disks can no longer meet the needs of enterprises and individuals for large-capacity data storage. Therefore, enterprises and individuals gradually use complex computing and data files are outsourced to cloud server providers for cloud storage to reduce their own computing and storage burdens, but it has been observed that for a single user or a single transaction, due to the use of different information sources, a large amount of duplicate data will be generated, resulting in cloud storage The waste of storage space, so in order to efficiently store user data, cloud storage providers use data deduplication technology

[0003] Existing data deduplication technology has the problems of high calculation and storage complexity of the deduplication scheme, insufficient security of the converged key, and difficult storage and management of the key.

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