Hierarchical data possession proving method capable of public auditing

Abstract

The invention discloses a hierarchical data possession proving method capable of public auditing. A user processes a file to be stored by layering and then partitioning, and the method mainly comprises the following steps that: (1) the user generates a verification label for each data block, and then sends the data blocks and the corresponding labels to a cloud storage service provider; (2) the third-party audit initiates challenges to the cloud storage service provider; (3) the data storage party generates possession evidence by using the stored data block information and the corresponding label information, and sends the evidence to the third party for auditing; (4) the third-party audit judges whether the data is complete or not by using public information and possession evidence of the user; and (5) if a data block is damaged, fine granularity authentication is performed by taking the damaged data block as a center until the detection granularity is minimum.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a hierarchical data possession certification method that can be publicly audited. Background technique [0002] With the rapid growth of the amount of data transmitted on the network, traditional storage technologies face the problems of high construction costs, complex operation and maintenance, and poor scalability. With the development of cloud storage technology, more users store data on cloud servers in order to reduce local storage and computing costs, but at the same time lose data control, resulting in the inability to ensure the integrity and security of cloud storage data. Although there are many data integrity auditing schemes to audit whether the remote data is complete or not, most of them only return the result of whether the user's data is complete or damaged, and it is for the user to find out which data is damaged Still very difficult. Therefore, i...

AI Technical Summary

Problems solved by technology

[0002] With the rapid growth of the amount of data transmitted on the network, traditional storage technologies are faced with the problems of high construction costs, complex operation and maintenance, and poor scalability

With the development of cloud storage technology, more users store data on cloud servers in order to reduce local storage and computing costs, but at the same time lose data control, resulting in the inability to ensure the integrity and security of cloud storage data

Although there are many data integrity auditing schemes to audit whether the remote data is complete or not, most of them only return the result of whether the user's data is complete or damaged, and it is for the user to find out which data is damaged still very difficult

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