Dynamic adaptive secure cloud storage method considering node reliability

Abstract

The invention belongs to the field of cloud storage security, and specifically relates to a dynamic adaptive secure cloud storage method considering node reliability. The method provided by the invention comprises the steps that a cloud storage system preprocesses a file uploaded to the cloud by using a preprocessing module; the cloud storage system detects any node by using an evaluation module through a node reliability evaluation method; and a data storage module receives a data block set sent by the preprocessing module. By adopting the method provided by the invention, the historical fault times of a cloud storage node can be detected, a reliability value is set for each node according to a detection result, and resources are dynamically distributed according to the reliability value, so that the data storage security is ensured while meeting the load balancing demand. Transcript storage is carried out on nodes with lower reliability values to ensure lower redundancy than pure copy, so that the storage cost is reduced.

Description

technical field [0001] The invention belongs to the field of cloud storage security, and in particular relates to a dynamic adaptive security cloud storage method considering node reliability. Background technique [0002] With the rapid development of information technology, more and more users choose to store data on the cloud. The cloud storage method breaks through the capacity bottleneck and performance disadvantages brought about by the traditional storage method, and can achieve scale effect and elastic expansion, reduce operating costs, and avoid waste of resources. However, while cloud services bring convenience, cloud data security issues have also attracted widespread attention. Because cloud storage gathers a large number of users and important data resources, it is more vulnerable to attacks. Recently, problems such as illegal intrusion, artificial leakage, and abuse of administrator privileges have often occurred, and data loss or leakage incidents continue t...

AI Technical Summary

Problems solved by technology

[0005] (1) The cloud storage system cannot dynamically change the storage location of data blocks according to the reliability of each node (that is, the frequency of node errors is different)

[0006] (2) Some studies use a combination of encryption methods to ensure data security, but indiscriminate large-scale encryption and decryption will consume a lot of bandwidth

[0007] (3) Backing up data on all nodes will consume a large amount of storage space, making it difficult to achieve the effect of cloud storage security optimization

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