Method and system for accessing cloud storage data by user

Abstract

The invention relates to a method and system for accessing cloud storage data by a user. Specifically, the method comprises the steps that a server receives a request of the user for accessing the cloud storage data; the server judges whether the request user is a legal user or not through the request; a security level of user access data is further judged through the requested data information if the request user is the legal user; the server sends data encrypted by a public key to the user if it is judged that the security level is a high level selected by the user; the user decrypts the data through a private key to obtain the data; the server directly sends the data in the cloud storage to the user if it is judged that the security level is not the high level selected by the user; and an access request is refused if the server judges that the request user is an illegal user. According to the method and the system, the security level of the cloud data is set by the user; different data storage and encryption operations are carried out for different security levels; and through identification of user information, the user authentication security is realized; and the storage security of important data is realized.

Description

technical field [0001] The invention relates to the field of cloud storage security, in particular to a cloud data upload and access control method. Background technique [0002] Cloud storage is a new concept extended and derived from the concept of cloud computing. In terms of function realization, it is a technology that realizes remote file access and file sharing. Cloud storage typically means putting data in off-premises storage pools rather than on-premises data centers or dedicated remote sites. In order to save investment costs, enterprises can choose to use cloud storage services. Storing data in the cloud is also conducive to obtaining data from other places, and does not need to be obtained through local storage. Therefore, cloud storage has become a trend in future storage development. However, with the development of cloud storage technology, the combination of various search, application technology and cloud storage needs to fully consider the hidden dangers...

AI Technical Summary

Problems solved by technology

[0003] At present, with the development of Internet technology, more and more users will choose to store their private files in cloud storage. So that the storage pressure of your mobile terminal is relieved, and you can access the data stored in the cloud anytime, anywhere, and you can quickly retrieve photos and logs in different places or even instantly through the WEB or PC client, but every photo uploaded by the user or Other files are stored in clear text on the cloud storage server. These files contain user confidential files or user privacy. Once the personal cloud storage space is cracked, sensitive information will be leaked; in addition, all files are encrypted on the server. Key encryption adds cost

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