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Repeating data deleting system and method applicable to cloud storage

A data deduplication and data duplication technology, which is applied in transmission systems, electrical components, etc., can solve the problems of low storage space utilization and redundant data, so as to improve performance and storage utilization, improve redundancy elimination rate, and improve safety effect

Inactive Publication Date: 2014-07-23
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0006] The purpose of the present invention is to provide a deduplication system and method suitable for cloud storage environment, the method solves the problem of too much redundant data and low utilization rate of storage space in the cloud storage system, and can effectively alleviate the deduplication The conflict between technology and data encryption, and preventing threats from cloud storage providers; this method can greatly improve storage space utilization, reduce bandwidth consumption, and improve user data and privacy security

Method used

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  • Repeating data deleting system and method applicable to cloud storage
  • Repeating data deleting system and method applicable to cloud storage
  • Repeating data deleting system and method applicable to cloud storage

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Embodiment Construction

[0048] The invention will be described in further detail below in conjunction with the accompanying drawings.

[0049] Such as figure 1 and figure 2 As shown, the present invention provides a method for data deduplication suitable for cloud storage, and its implementation mainly has two stages: a data upload stage and a data download stage, and the method includes the following steps:

[0050] Step 1: Data upload stage;

[0051] 1) Perform file-level duplicate data detection: ① Calculate the Hash value of the file and send it to the security agent; ② The security agent compares the fingerprint library and returns the comparison result to the client. If the file already exists and the number of copies is greater than the threshold F, Then delete the file and write the storage location into the Location value of the file storage index; otherwise, judge the file size, if it is less than the threshold S, perform convergent encryption, and if it is greater than the threshold S, ...

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Abstract

The invention discloses a repeating data deleting system and method applicable to cloud storage. The repeating data deleting system is based on strategies, a security agent and a random storage mechanism are adopted, a storage service is separated from a security service, the space utilization rate of cloud storage is improved, bandwidth occupation of redundant data is reduced, and security of user data and privacies is improved at the same time. The system is mainly composed of a client, the security agent and the cloud storage, wherein the security agent is the most secure core and is mainly used for ensuring the security of the user data and privacies. The repeating data deleting system and method applicable to cloud storage have the advantages of being high in security, system efficiency, bandwidth utilization rate and the like, and can resist replay attack, impersonation attack and security threats brought by partially trusted cloud storage providers.

Description

technical field [0001] The invention relates to the technical field of cloud storage and information security, in particular to the de-duplication technology. Background technique [0002] Cloud storage is a new concept extended and developed on the concept of cloud computing (Cloud Computing), which refers to the integration of a large number of different types of storage devices in the network through functions such as cluster applications, grid technology or distributed file systems. A system that works together through a collection of application software to jointly provide data storage and business access functions. The cloud storage system uses data deduplication technology to keep only one copy of redundant data and provide a pointer to the copy instead of storing multiple copies, which can greatly reduce disk space overhead and bandwidth requirements. According to the latest statistics, deduplication technology is the most effective storage technology and will be ap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L29/06
Inventor 孙国梓王振宇杨一涛何利文
Owner NANJING UNIV OF POSTS & TELECOMM
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