A Safe Distributed Data Deduplication Method

A data deduplication and distributed technology, applied in the field of cloud storage services, can solve the problems of data inaccessibility, hidden dangers, data loss, etc., and achieve the effect of protecting data confidentiality, high reliability, high reliability and confidentiality level
CN103763362BActive Publication Date: 2016-12-21XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2016-12-21

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Abstract

The invention discloses a safe distributed duplicated data deletion method. According to the method, a file is segmented into fragments through a secret sharing technology without any encryption mechanism. The shared fragments are distributed in a plurality of independent storage servers. In addition, in order to support reduplication removing, a different short value is calculated and sent to the storage servers as the indicator of one fragment. Only possessors uploading data for the first time need to carry out such calculation and distribution of secrete sharing, and then people possessing the same data copies do not need to calculate and store the sharing any longer. When the data copies are restored, users must access the storage servers with the minimum quantity to reconstruct the data through authentication and acquisition of the secret sharing. In other words, the secret sharing of the data can only be accessed by the users who possess the same copies and are authorized.
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Description

technical field

[0001] The invention relates to a cloud storage service in the computer field, in particular to a safe distributed duplicate data deletion method. Background technique

[0002] Data deduplication technology is widely used in data backup to reduce network and storage overhead, and it does this by detecting and eliminating data redundancy. Data deduplication technology eliminates data redundancy, leaving only one physical copy instead of multiple copies of the same content. At present, many data deduplication technologies have emerged, and they are based on various deduplication strategies, such as client-side or server-side deduplication, file-level or block-level deduplication, and so on. Especially when the era of cloud computing comes, the growing data problems faced in cloud storage make many enterprises and groups outsource data storage to third-party organizations. In this case, data deduplication technology is extremely critical. Many commercial cloud...

Claims

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