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Encrypted data deduplication method, system and related device

A technology for encrypting data and data, applied in transmission systems, digital data protection, electrical digital data processing, etc., can solve the problem of low deduplication efficiency and achieve the effect of improving deduplication efficiency

Active Publication Date: 2019-08-27
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, file-level data deduplication can only deduplicate files, and the deduplication efficiency is low

Method used

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  • Encrypted data deduplication method, system and related device
  • Encrypted data deduplication method, system and related device

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Embodiment Construction

[0048] The core of this application is to provide a method for deduplication of encrypted data, which can improve the efficiency of deduplication of encrypted data on a cloud server. Another core of the present application is to provide an encrypted data deduplication system, device and computer-readable storage medium.

[0049] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0050] At present, the encry...

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Abstract

The encrypted data deduplication method provided by the invention comprises the following steps: calculating a first label corresponding to a target file based on a first label generation function, and uploading the first label to a cloud server for file-level repeatability detection to obtain a file-level repeatability detection result; if the file-level repeatability detection result shows thatthe first label exists on the cloud server, executing a file-level data duplicate removal operation; and if the file-level repeatability detection result shows that the first label does not exist on the cloud server, executing a block-level data de-duplication operation. According to the method, corresponding file-level data deduplication operation and block-level data deduplication operation areexecuted respectively according to different file-level repeatability detection results, namely, file-level data deduplication and block-level data deduplication are combined in the method, and filesand data blocks can be deduplicated, so that the deduplication efficiency of encrypted data on a cloud server can be improved. The invention further provides an encrypted data deduplication system anddevice and a computer readable storage medium which all have the above beneficial effects.

Description

technical field [0001] The present application relates to the field of deduplication of encrypted data, in particular to a method, system, device and computer-readable storage medium of deduplication of encrypted data. Background technique [0002] The user uploads the data to the cloud server for storage to save local storage space, and the data stored on the cloud server can be obtained at any time later, and the cloud server is used to store the encrypted data of the user. Data deduplication enables only one copy of data to be stored in the cloud server, and the cloud server creates access links for all legitimate users of the data so that they can obtain the data. Data deduplication can save a lot of network bandwidth and storage space in practical applications. [0003] At present, the encrypted data deduplication method in the related art is: the user uploads the data to the cloud server, first conducts the popularity query with the help of a trusted third party, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/215G06F21/60H04L29/08
CPCG06F21/602H04L67/1097G06F16/215
Inventor 咸鹤群高文静
Owner QINGDAO UNIV