File storage method and system, cloud equipment and terminal equipment

A file storage and file technology, applied in the transmission system, digital transmission system, electrical components, etc., can solve the problem that the data deduplication technology is not feasible, and achieve the effect of ensuring security

Inactive Publication Date: 2020-01-10
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the same file is encrypted with different keys, different ciphertexts will be obtained, so the above encryption method makes cross-user data deduplication technology infeasible

Method used

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  • File storage method and system, cloud equipment and terminal equipment
  • File storage method and system, cloud equipment and terminal equipment
  • File storage method and system, cloud equipment and terminal equipment

Examples

Experimental program
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Embodiment Construction

[0060] The core of the present application is to provide a file storage method, system, cloud device and terminal device, which are used to deduplicate encrypted data.

[0061] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0062] Based on the prior art, for the consideration of privacy and confidentiality, the data owner tends to encrypt the data with his own key before uploading the data to the cloud s...

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PUM

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Abstract

The invention discloses a file storage method. The method comprises the steps that a cloud searches whether a first hash value exists or not; if yes, the cloud returns prompt information of repeated files and waits for uploading of the second ciphertext; if not, the cloud requests for the to-be-uploaded file; and the client encrypts the to-be-uploaded file to obtain an encrypted file, encrypts thefirst preset key to obtain a first ciphertext, encrypts the second hash value by using a second preset key to obtain a second ciphertext, and uploads the first ciphertext, the second ciphertext and the encrypted file to the cloud. According to the method, the to-be-uploaded file is in a ciphertext form when leaving the client, the unsafe environment on the network and the cloud is isolated, meanwhile, the second hash value of the file is adopted to encrypt the first preset key to ensure that the key of the encrypted file is not leaked, data deduplication is carried out on the encrypted data,and meanwhile, the security of the data is ensured. The invention also provides a file storage system, cloud equipment and terminal equipment, which have the above beneficial effects.

Description

technical field [0001] The present application relates to the field of file storage, and in particular to a file storage method, system, cloud device and terminal device. Background technique [0002] With the development and popularization of cloud computing technology, due to its great flexibility and economy, enterprises and individuals are urged to outsource data to cloud service providers. According to the analysis report of Internet Data Center (IDC), by 2020, the total amount of data in the world will reach 44ZB. With the rapid growth of the total amount of data in cloud servers, it is urgent to develop new technologies to efficiently use storage space and network bandwidth. [0003] In fact, data deduplication technology has attracted great attention from both industry and academia. For example, Dropbox, Spider Oak, and Google Drive have adopted data deduplication technology to reduce storage space consumption, and adopted client-side data deduplication to reduce n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/08H04L9/32
CPCH04L9/3236H04L63/0428H04L67/06H04L67/1097
Inventor 咸鹤群徐子恒
Owner QINGDAO UNIV
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