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Cloud-storage data integrity proving method based on data repeatability verification

A data integrity and repeatability technology, applied in the field of cloud storage, can solve problems such as low computing efficiency and insufficient use of data repeated operations, and achieve the effect of improving efficiency, wide application prospects, and high computing efficiency

Active Publication Date: 2015-10-21
南京高大上软件科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these schemes are all data integrity verification schemes with the function of deduplicating data. They simply superimpose data ownership proof and data integrity audit, do not make full use of the advantages of data duplication operations, and use a lot of computing efficiency poor bilinear pairing

Method used

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  • Cloud-storage data integrity proving method based on data repeatability verification

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Embodiment Construction

[0017] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] Such as figure 1 The basic flow chart of the present invention shown in the cloud storage data integrity certification method based on data repeatability verification includes the following steps:

[0019] (1) The data owner A encodes the data file F' with an erasure code, obtains the encoded data file F, and divides the data file F into blocks, that is, F={m 1 ,m 2 ,...,m n}, and for each data block m i Encrypt and mark to get the corresponding ciphertext C i and mark T i , the set of ciphertext {C i} and the collection of tags {T i}Upload to the cloud server, where i is the number of the data block, i=1,2,...,n;

[0020] (2) The data owner B divides the data file F' into blocks, that is, F'={m' 1 ,m' 2 ,...,m' n}, and for each data block m’ i Encrypt and mark to get the corresponding ciphertext C' i and mark T' i , wi...

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Abstract

The invention discloses a cloud-storage data integrity proving method based on data repeatability verification. The proving method comprises steps that when a user outsources data to a cloud server, the cloud server will firstly checks whether the data is repeated; if it is, the server will mark the repetitive rate of a data block and tells the user not to upload the data since there has been the data; and the user will mark the repeated data, so the user will focus on the integrity verification of unrepeated data when examining the integrity of data. Based on data repeatability verification, integrity verification is mainly carried out for the unrepeated data, so efficiency of a data integrity check is greatly increased.

Description

technical field [0001] The invention belongs to the technical field of cloud storage, and in particular relates to a cloud storage data integrity certification method based on data repeatability verification. Background technique [0002] In a cloud storage environment, when users outsource their data to cloud servers, they lose physical control over the data. In order to ensure the integrity of outsourced data, at the 2007 ACM Computer and Communication Security Conference (CCS'07), Ateniese et al. proposed the concept of data existence proof PDP in the cloud environment. Since then, a variety of verifiable cloud storage data integrity certification methods have been proposed. However, according to statistics, about 75% of the data in cloud servers are duplicated. In order to improve storage efficiency, researchers have proposed data deduplication technology (data deduplication). From the comprehensive consideration of effectiveness and security, it is necessary to combin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/08H04L9/06
CPCH04L9/0643H04L63/0435H04L63/123H04L67/1097
Inventor 任勇军季赛韩进王伟
Owner 南京高大上软件科技有限公司