Block-level data de-duplication method for supporting dynamic ownership management in fog storage

Abstract

The invention belongs to the technical field of fog computing and information security, and discloses a block-level data de-duplication method for supporting dynamic ownership management in fog storage. The method provides an improved block-level client de-duplication technology, and solves the problem of data sensitive information revealing of the current block-level client during de-duplicationwhile saving network bandwidth. The method also provides a secondary ownership list and a key update mechanism, can realize the access control of fine grain at a lower cost while effectively saving storage space, and fills up the blank of no compatibility between ownership management technologies and the block-level client de-duplication technologies. In addition, the method also introduces a datablock dynamic storage mechanism, data blocks in a system can be transferred in the system according to service needs, and therefore, service costs and file access delay can be reduced, system security and user service experience can be enhanced, and the problem of low system resource utilization rates in a current fog storage de-duplication scheme can be solved.

Description

technical field [0001] The invention belongs to the technical field of fog computing and information security, and in particular relates to a block-level data deduplication method in fog storage that supports dynamic ownership management. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: the increasing number of cloud service users will lead to the inability of the centralized cloud computing service model to provide timely and effective services. For this reason, researchers propose a new computing model - fog computing, This computing mode has the advantages of low latency and convenient service. However, the rapid growth of data volume in fog storage makes it face the dilemma of insufficient disk space and network bandwidth. Therefore, service providers use data deduplication technology to delete redundant backups of the same data in the system by using data similarity, and only keep a single Copy to effecti...

AI Technical Summary

Problems solved by technology

In the data outsourcing stage, no matter the initial uploader or the subsequent uploader needs to perform the same upload steps, the user cannot judge whether data deduplication occurs through the server’s response, thus solving the problem of current block-level client deduplication while saving network bandwidth The problem of data sensitive information leakage

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