Remote secure storage method, system, device, and storage medium

By combining symmetric key encryption and digital certificate encryption from a Ukey device with signature certificate signing, the problem of insecure storage on network drives is solved, enabling secure file storage and access control.

CN119814423BActive Publication Date: 2026-07-24GUANGDONG DRUG TRADING CENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGDONG DRUG TRADING CENT CO LTD
Filing Date
2024-12-25
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing network drives cannot achieve secure, leak-free storage of file data, and their access control is too simplistic to manage individual files.

Method used

The file to be encrypted is encrypted by generating a symmetric key, the key is encrypted using the digital certificate of the Ukey device, the ciphertext and metadata of the file are integrated and signed using a signing certificate, and then sent to the server for remote storage. The accessible objects of the file are set.

Benefits of technology

It improves the security of file storage by implementing encrypted encapsulation and access control of files, ensuring that files are only accessible to authorized users.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application belongs to the technical field of information security, and discloses a remote secure storage method, system, device and storage medium. The method comprises the following steps: performing symmetric encryption on a to-be-securely-transmitted file corresponding to a to-be-encrypted file list by using a generated symmetric key, to obtain a plurality of file ciphertexts; respectively encrypting the symmetric key by using a digital certificate of an accessible person of a manufacturer's digital certificate in an accessed Ukey device, to obtain a digital envelope; integrating the plurality of file ciphertexts, the digital envelope and metadata; signing the integrated data by using a signature certificate of the manufacturer, to obtain a signature value; appending the signature value to the end of the to-be-securely-transmitted file, to obtain a secure file allowed to be transmitted, and sending the secure file to a server for remote storage, so that the accessible object of the file can be set, the file can be encrypted and packaged by using the digital certificate of the accessible object, and the packaged file can be sent to a remote secure server for storage, thereby improving the security of file storage.
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Citation Information

Patent Citations

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    CN101989984A

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    CN103338185A

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