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Data integrity auditing method supporting tag block chain storage and query

A data integrity and blockchain technology, applied in the field of information security, can solve the problems of cloud storage's wide application limitations, poor scalability of blockchain, and low query efficiency, so as to improve audit efficiency, improve scalability, reduce The effect of operation

Pending Publication Date: 2020-11-06
WUHAN TEXTILE UNIV
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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a data integrity audit method that supports tag blockchain storage and query, aiming to solve the bottleneck of centralized audit in the prior art, the poor scalability of the blockchain and the Low query efficiency and other problems, if these problems are not solved, the wide application of cloud storage will be limited

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  • Data integrity auditing method supporting tag block chain storage and query
  • Data integrity auditing method supporting tag block chain storage and query
  • Data integrity auditing method supporting tag block chain storage and query

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further 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.

[0035]In the embodiment of the present invention, the data is stored on the cloud server, and the data tags are stored on the block chain platform. If the data is directly stored on the blockchain, it is limited by the capacity of the blockchain, resulting in the system not being widely used. Data tags are generated using short signature technology and stored in a T-Merkle structure. ZSS short signature technology uses general hash functions (such as MD5 or SHA-1) instead of specially constructed hash functions, and uses less bilinear pairing operations to improve signature generation efficiency (...

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Abstract

The invention discloses a data integrity auditing method supporting tag block chain storage and query, which comprises the steps that a client blocks a data file and generates a data tag, data is stored on a cloud server, and the data tag is stored on a block chain platform in a T-Merkle tree structure; an auditor sends a sampling auditing inquiry to the cloud server and the block chain platform;the block chain platform executes a query algorithm to obtain the data tag, calculates ciphertext label evidence and returns the ciphertext tag evidence to the auditor, and meanwhile, the cloud servercalculates ciphertext data evidence and returns the ciphertext data evidence to the auditor; and the auditor directly verifies the integrity of the data through the double-line pair property on the premise that decryption is not needed. According to the invention, the block chain platform is used for storing data tags, a corresponding block chain storage structure and a query method are provided,and a bilinear pair verification method based on ZSS short signatures is designed, so that the expandability of the system and the security and high efficiency of data integrity auditing are improved.

Description

technical field [0001] The invention relates to a data integrity auditing method that supports label block chain storage and query, and the invention belongs to the field of information security. Background technique [0002] Cloud storage is an important service of cloud computing, which allows data owners to host their data in cloud servers and provide data access to users through the network. With the help of technologies such as virtualization and distributed storage, cloud storage integrates storage devices from different vendors, structures, and locations in the network to build a storage resource pool. Users rent storage resources from cloud service providers according to their own needs in a pay-as-you-go manner. As a low-cost, highly scalable infrastructure service, cloud storage has attracted more and more attention from individuals and enterprises. [0003] With the rapid development of cloud storage, mass data centralized storage on cloud servers is more vulnera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/64
CPCG06F21/64
Inventor 何凯胡新荣史爱武梁金星
Owner WUHAN TEXTILE UNIV
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