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Index conversion method for public data integrity checking

A technology of integrity verification and conversion method, which is applied in the field of index conversion of public data integrity verification, and can solve problems such as not supporting dynamic update of data

Active Publication Date: 2013-04-24
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the defects of the prior art, the purpose of the present invention is to provide an index conversion method for public data integrity verification, which is based on the improvement of the existing PPPA scheme and aims to solve the problem that the existing scheme does not support dynamic update of data

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  • Index conversion method for public data integrity checking

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Embodiment Construction

[0085] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0086] Below at first the technical term in the present invention is explained and illustrated:

[0087] Cloud environment: in the narrow sense, cloud refers to the delivery and use mode of IT infrastructure, which refers to obtaining the required resources through the network in an on-demand and easy-to-expand manner; way to obtain the required services. Such services can be IT and software, Internet related, or other services. It means that computing power can also be circulated as a commodity through the Internet.

[0088] Auditing: Auditing refers to the integrity verification of data, that ...

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Abstract

The invention discloses an index conversion method for public data integrity checking. The index conversion method for the public data integrity checking includes the following steps: a user side logs in a cloud server and an audit server, synchronizes a public key of a user to the cloud server and the audit server, receives a user request, and judges whether the user side is requested to execute the operation of uploading a file or requested to execute the operation of deleting the file according to the user request; if the user side is requested to execute the operation of uploading the file, the user side receives the file needing to be uploaded from the user, segments the file needing to be uploaded according to the public key and a private key of the user, calculates a label of each segment, and uploads the file needing to be uploaded and the label of each segment to the cloud server; and if the user side is requested to execute the operation of deleting the file, the user side receives the file needing to be deleted from the user, and deletes files, file labels and relevant file information in the cloud server and the audit server, wherein the files, the file labels and the relevant file information correspond to the file needing to be deleted. The index conversion method for the public data integrity checking is an improvement based on an existing privacy-preserving public auditing (PPPA) scheme, and the problem that the existing scheme does not support dynamic updating of data can be solved.

Description

technical field [0001] The invention belongs to the technical field of cloud environment, and more particularly relates to an index conversion method for checking the integrity of public data. Background technique [0002] Data integrity verification is to detect data damage and loss in time to prevent the server from intentionally concealing data loss events. Cloud data integrity verification refers to the data integrity verification in the cloud environment. Data integrity checks can be roughly divided into two types: private data integrity checks and public data integrity checks. The private data integrity check takes place between the original data owner user and the service provider. In order to effectively check the data integrity, the user usually needs to maintain a certain amount of secret information, such as the encryption key and hash value of the data, etc. . Therefore, in order to ensure the confidentiality and privacy of data, private data integrity verific...

Claims

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Application Information

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IPC IPC(8): H04L29/06
Inventor 周可李春花蔡启泉金豪张彦哲
Owner HUAZHONG UNIV OF SCI & TECH
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