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Cloud storage data encryption method and cloud storage system

A technology of cloud storage system and encryption method, which is applied in the field of cloud storage, can solve problems affecting the security of data uploaded by users and imperfect protection schemes, and achieve the effect of convenient and fast sharing, solving security and high efficiency, and ensuring security

Pending Publication Date: 2017-01-18
杭州奕锐电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] From the perspective of server security operations, cloud storage servers have already become the target of hackers. The security of servers directly affects the security of data uploaded by users. Most cloud storage vendors have prepared security protection solutions, but the protection solutions are not perfect.
At the same time, for cloud disk operators, anyone can access the data uploaded by anyone, and some sensitive information cannot be safely uploaded to the cloud

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1, the cloud storage data encryption method involved in the present invention, the encryption and decryption process is integrated with the file upload and download process, that is, the file is encrypted while being uploaded, and the file is decrypted while being downloaded. The encryption and decryption operations of files are all completed on the client side, and the data exists in the form of ciphertext during the transmission process, and all user data content on the WAN exists in the form of ciphertext;

[0051] File upload includes the following process:

[0052] 1.1. The client establishes a connection with the background of the cloud storage system;

[0053] 1.2. The client obtains the key factor set by the user from the background of the cloud storage system, and calculates the symmetric key;

[0054] 1.3. The client calculates the file header of the file to be uploaded and uploads it;

[0055] 1.4. The client performs block processing on the uplo...

Embodiment 2

[0068] Embodiment 2, in order to ensure the high efficiency of user use, a local automatic backup folder is set on the client side, and the local automatic backup folder is scanned every minute. If there is a change or new addition to the file, the change will be in the form of cipher text Automatically syncs to the cloud. Others are the same as in Embodiment 1.

Embodiment 3

[0069] In the third embodiment, in order to ensure the safety of the user, the encryption method adopts the SM4 national secret algorithm to encrypt and decrypt the data block. Others are the same as in Embodiment 1.

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PUM

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Abstract

The invention provides cloud storage data encryption method which uploads data in an encrypted manner, enables users to master a key themselves and is high in security. The encryption / decryption process is fused with an uploading / downing process of a file, encryption and decryption operations of the file are completed at a client, data exists in a ciphertext form in the transmitting process, and the content of user data on a wide area network exists in a ciphertext form. The beneficial effects are that high-strength encryption is performed, the data reliability is high, different security sharing groups can be built according to requirements of a company, the efficiency of storage and the security of the file content are ensured, and the contradiction between the security and the efficiency is effectively solved; and ciphertext data incremental backup can be realized, and access of multiple terminals such as a PC, a mobile phone and a PAD is supported.

Description

technical field [0001] The invention relates to the technical field of cloud storage, in particular to an encryption method for cloud storage data and a cloud storage system. Background technique [0002] Cloud storage is a new concept extended and developed on the concept of cloud computing. It is an emerging network storage technology. A large number of different types of storage devices work together through application software to jointly provide a system for data storage and business access functions. When the core of cloud computing system computing and processing is the storage and management of large amounts of data, a large number of storage devices need to be configured in the cloud computing system, then the cloud computing system will be transformed into a cloud storage system, so cloud storage is a data storage and management as the core cloud computing system. Simply put, cloud storage is an emerging solution to put storage resources on the cloud for people t...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L29/08
CPCH04L63/0435H04L67/06
Inventor 黄军李渝川黄海峰王家忆
Owner 杭州奕锐电子有限公司
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