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Encryption and decryption methods for transferring files

An encryption method and technology for transmitting files, which are applied in the field of encryption and decryption methods and encryption and decryption devices for transmission files, can solve problems such as large security of private files, and achieve the effect of ensuring security and improving user experience.

Inactive Publication Date: 2018-02-16
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide an encryption and decryption method and an encryption and decryption device for transmitting files, aiming to solve the relatively large security problems in the prior art of using Internet users' private files

Method used

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  • Encryption and decryption methods for transferring files
  • Encryption and decryption methods for transferring files
  • Encryption and decryption methods for transferring files

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] see figure 1 , which shows the encryption method for the transmission file provided by the embodiment of the present invention.

[0045] The encryption method of the transmission file is applied in the mobile terminal equipment, and specifically includes the following steps:

[0046] In step S101, a file to be transferred and a file transfer instruction are received, and the file transfer instruction carries a key target user identifier;

[0047] In the embodiment of the present invention, after the step of receiving the file to be transmitted, it also includes: judging whether the file to be transmitted includes a preset keyword; if it is judged that the file to be transmitted includes a preset keyword If it is determined that the file to be transmitted is a file that needs to be encrypted, step S102 is executed.

[0048] However, it can be understood that the keywords can be "contract", "agreement", "important" and so on, which can be set according to user requireme...

Embodiment 2

[0058] see figure 2 , which shows the encryption method for the transmission file provided by the embodiment of the present invention.

[0059] The encryption method of the transmission file is applied in the mobile terminal equipment, and specifically includes the following steps:

[0060] In step S201, the file to be transferred and the file transfer instruction are received, and the file transfer instruction carries the key target user identifier;

[0061] In the embodiment of the present invention, after the step of receiving the file to be transmitted, it also includes: judging whether the file to be transmitted includes a preset keyword; if it is judged that the file to be transmitted includes a preset keyword If it is determined that the file to be transmitted is a file that needs to be encrypted, step S202 is performed.

[0062] However, it can be understood that if it is determined that the file to be transmitted does not include the preset keyword, the file is direc...

Embodiment 3

[0072] see image 3 , which shows the encryption method for the transmission file provided by the embodiment of the present invention.

[0073] The encryption method of the transmission file is applied in the mobile terminal equipment, and specifically includes the following steps:

[0074] In step S301, a file to be transferred and a file transfer instruction are received, and the file transfer instruction carries a key target user identifier;

[0075] In the embodiment of the present invention, after the step of receiving the file to be transmitted, it also includes: judging whether the file to be transmitted includes a preset keyword; if it is judged that the file to be transmitted includes a preset keyword If it is determined that the file to be transmitted is a file that needs to be encrypted, step S302 is performed.

[0076] However, it can be understood that if it is determined that the file to be transmitted does not include the preset keyword, the file is directly t...

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PUM

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Abstract

The present invention provides an encryption method for transferring files, including the following steps: receiving a file to be transferred and a file transfer instruction, wherein the file transfer instruction carries a key target user identifier; according to the key target user identifier, obtaining the A key for encrypting the file to be transmitted; using the key to encrypt the file to be transmitted; and transmitting the encrypted file to be transmitted to the receiver's mobile terminal according to the file transmission instruction. The invention can ensure the security of network transmission files, is convenient and fast, and greatly improves user experience.

Description

technical field [0001] The invention relates to the technical field of encryption and decryption, in particular to an encryption and decryption method and an encryption and decryption device for transmission files. Background technique [0002] With the development of society, the Internet and mobile Internet have become an inseparable part of people's lives. While the Internet brings convenience and speed, the leakage of users' personal privacy has also become the focus of attention. In the prior art, instant chat software or even communication tools do not encrypt the content of the file itself during file transmission, that is to say, anyone else can open and view the file and obtain the content as long as they get the file. This is very poor security. If some confidential files need to be transmitted through instant chat software, or the computer is invaded by others, then some valuable personal privacy or confidential files may be easily leaked. [0003] Therefore, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
CPCH04L63/0428H04L9/40
Inventor 张海平周意保
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD