Encryption and decryption method for protecting safety of cloud storage data

Abstract

The invention provides an encryption and decryption method for protecting safety of cloud storage data. A user stores an uploaded primary file in a cloud storage after encrypting the uploaded primary file by a certain encryption algorithm, and a key file is generated when the user uploads the file and is stored at a user side, and the key file is used for deciphering a downloaded ciphertext, and thus, even an administrator on the cloud storage also cannot be look up file contents optionally so as to ensure the privacy of the file of the user. On the premise that web service convenience is ensured, key-based encryption is performed on the file uploaded to the cloud storage, and therefore, a cloud storage service capable of enabling file uploading and downloading to be safer and protecting the safety of the data is realized, and problems existing in the cloud storage at present are shielded.

Description

technical field [0001] The invention relates to the technical field of cloud storage, in particular to an encryption and decryption method for protecting cloud storage data security. Background technique [0002] With the development of cloud computing, users have gradually migrated applications to the cloud platform, but some users with sensitive and important data are still skeptical about the cloud platform. This is understandable, and the security of the existing cloud storage needs to be improved. , it is urgent to solve the following problems: [0003] (1) Administrator problem: the system administrator at the cloud storage end can access user data anytime and anywhere, which is a potential threat to user data security; [0004] (2) Plaintext storage problem: data is stored in the cloud storage in plaintext, which provides the conditions for criminals to directly steal files and cause leaks; [0005] (3) Transmission leakage problem: At present, many uploaded files o...

AI Technical Summary

Problems solved by technology

[0002] With the development of cloud computing, users have gradually migrated applications to the cloud platform, but some users with sensitive and important data are still skeptical about the cloud platform. This is understandable, and the security of the existing cloud storage needs to be improved. , it is urgent to solve the following problems:

[0003] (1) Administrator problem: the system administrator at the cloud storage end can access user data anytime and anywhere, which is a potential threat to user data security;

[0004] (2) Plaintext storage problem: data is stored in the cloud storage in plaintext, which provides the conditions for criminals to directly steal files and cause leaks;

[0005] (3) Transmission leakage problem: At present, many uploaded files on the network disk are uploaded in plain text, which can be easily captured by network capture tools.

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