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File processing method and device

A file processing and file data technology, which is applied in electronic digital data processing, computer security devices, instruments, etc., can solve the problems of electronic files not being illegally stolen or tampered with, and insecure encryption processing methods.

Active Publication Date: 2022-02-18
NEW FOUNDER HLDG DEV LLC +1
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The present invention provides a file processing method and device to solve the problem that the existing encryption processing method in the prior art is not safe and still prevents electronic files from being illegally stolen or tampered with

Method used

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  • File processing method and device
  • File processing method and device
  • File processing method and device

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Embodiment Construction

[0057] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0058] The specific application scenario of the present invention is: in the prior art, a public key is set in the server, the server uses the public key to encrypt the electronic file, and then the server sends the encrypted electronic file to the terminal; the terminal uses the private key corresponding to the public key key to decrypt the encrypted electronic file, and then the term...

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Abstract

The present invention provides a file processing method and device, wherein the method includes: receiving the encrypted electronic file sent by the server and the encrypted replacement information in this embodiment, the replacement information includes file data and location information of the file data, wherein , the file data is extracted from the electronic file by the server, the location information represents the position of the file data in the electronic file, and the encrypted electronic file is the electronic file from which the file data has been extracted; the encrypted electronic file and the encrypted replacement information Decrypt to obtain the decrypted electronic file and replacement information; according to the location information of the file data, set the file data to a position corresponding to the location information of the file data in the decrypted electronic file to obtain a complete electronic file. After other illegal devices obtain encrypted electronic files, illegal devices cannot obtain complete electronic data, which ensures that electronic files are not illegally stolen or tampered with.

Description

technical field [0001] The invention relates to the technical field of electronic files, in particular to a file processing method and device. Background technique [0002] With the development of electronic technology, electronic files are now commonly used to transfer files. In order to ensure that the electronic files are not stolen or modified, the server can encrypt the electronic files, and then the server can transmit the encrypted electronic files to the terminal. [0003] In the prior art, a public key is set in the server, and the server uses the public key to encrypt the electronic file, and then the server sends the encrypted electronic file to the terminal; the terminal uses the private key corresponding to the public key to encrypt the encrypted electronic file. Decrypt, and then the terminal obtains the electronic file. [0004] However, in the existing technology, if other illegal devices obtain the private key, they can decrypt the encrypted electronic fil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/60
CPCG06F21/602
Inventor 董敏
Owner NEW FOUNDER HLDG DEV LLC
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