Safe storage method based on a plurality of cloud storage systems and system thereof

A cloud storage system and secure storage technology, applied in the field of secure storage methods and systems, to achieve high data access speed and concurrency performance, improve security and reliability, and solve the effect of encryption and decryption key storage problems

Inactive Publication Date: 2013-05-22
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a secure storage method based on multiple cloud storage systems, and provides its secure storage system at the same time, solving the problem of simultaneously ensuring the security of data and metadata in existing multiple cloud storage systems

Method used

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  • Safe storage method based on a plurality of cloud storage systems and system thereof
  • Safe storage method based on a plurality of cloud storage systems and system thereof
  • Safe storage method based on a plurality of cloud storage systems and system thereof

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Embodiment Construction

[0063] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0064] The embodiment of the present invention is used for a storage system including 5 cloud storage systems, including a data writing operation step and a data reading operation step;

[0065] Data write operation steps, such as figure 2 shown, including the following sub-steps:

[0066] (1.1) Data block:

[0067] The original data D with a length of 64MB is divided into three original data blocks of equal size, each original data block is 22MB in size, and the remaining original data less than one original data block size is filled with zero or arbitrary data to make up the original data block size;

[0068] (1.2) Data encryption:

[0069] Use the AES algorithm to encrypt 3 original data blocks into 3 ciphertext data blocks, and at the same time generate a ciphertext metadata, the ciphertext metadata includes the key k d (427e7b5b2a55747a3b79552...

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Abstract

The invention belongs to the technical field of computer storage, and provides a safe storage method based on a plurality of cloud storage systems and a system thereof. The method and the system can achieve the purpose that in the plurality of existing cloud storage systems, safety of data and metadata can be guaranteed at the same time. The safe storage method comprises a step of data writing operation and a step of data reading operation, wherein the step of data writing operation comprises the sub-steps of data partitioning, data encryption, redundancy encoding, digital signature, sharing processing, and data storage. The step of data reading operation comprises the sub-steps of metadata partition file decryption, digital signature inspection, redundancy decoding and cipher text data block decryption. The safe storage system comprises an encryption and decryption coding module, a redundancy encoding module, a secret sharing module and a digital signature module. By means of the method and the system, metadata privacy and high availability can be guaranteed, and meanwhile, a user does not need to store any metadata information for indexing and data query.

Description

technical field [0001] The invention belongs to the technical field of computer storage, and in particular relates to a secure storage method based on multiple cloud storage systems and a system thereof. Background technique [0002] The cloud storage system is an online storage system for the purpose of mass data storage management. The cloud storage system is a provider that interconnects mass storage servers through an internal high-speed network as the hardware foundation, and runs a distributed file storage system on it to coordinate the work of the servers and provide external services. A storage service with a unified storage service interface. Users can use these storage interfaces to store data on demand and only pay for the data they store. Compared with the traditional local storage, this storage method has several advantages: 1. It is easy to manage, and the software and hardware upgrade and maintenance of all storage systems are completed by the cloud service p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L29/06H04L9/08H04L9/06
Inventor 冯丹柳青施展焦田丰李勇李宁
Owner HUAZHONG UNIV OF SCI & TECH
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