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File encryption method, device, file decryption method, device and storage medium

A file encryption and file technology, applied in the field of information security, can solve the problems of illegal transfer of files, low security, malicious acquisition, etc., and achieve the effect of reducing the probability of illegal access and improving security

Active Publication Date: 2020-09-11
NAT COMP NETWORK & INFORMATION SECURITY MANAGEMENT CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a file encryption method, a device, a file decryption method, a device, and a storage medium, so as to overcome the problem of illegal file transfer and / or maliciously obtained flaws

Method used

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  • File encryption method, device, file decryption method, device and storage medium
  • File encryption method, device, file decryption method, device and storage medium
  • File encryption method, device, file decryption method, device and storage medium

Examples

Experimental program
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no. 1 example

[0064] In the first embodiment of the present invention, a file encryption method, such as figure 1 shown, including the following specific steps:

[0065] Step S101, extracting hardware identification information in the key unit, and generating first key information and second key information according to the hardware identification information.

[0066] Wherein, the hardware identification information in the key unit includes at least one of the following information: the factory sequence of the key unit, the type information of the key unit, and the storage capacity information of the key unit.

[0067] When the hardware identification information in the key unit is maliciously tampered with, the first key information and the second key information become invalid, and the encrypted file cannot be decrypted according to the first key information and the second key information.

[0068] Step S102, based on the preset key information setting model, set the second key informat...

no. 2 example

[0082] In the second embodiment of the present invention, a file encryption method, such as figure 2 shown, including the following specific steps:

[0083] Step S201, extracting hardware identification information in the key unit, and generating first key information and second key information according to the hardware identification information.

[0084] Wherein, the hardware identification information in the key unit includes at least one of the following information: the factory sequence of the key unit, the type information of the key unit, and the storage capacity information of the key unit.

[0085] When the hardware identification information in the key unit is maliciously tampered with, the first key information and the second key information become invalid, and the encrypted file cannot be decrypted according to the first key information and the second key information.

[0086] Step S202, based on the preset key information setting model, set the second key inform...

no. 3 example

[0121] , the third embodiment of the present invention, a file encryption device, such as image 3 shown, including the following components:

[0122] Processor 110 , memory 109 , key unit 201 . In some embodiments of the present invention, these components may be connected by a bus or other means.

[0123] The processor 110 may be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU), and may also be a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (English: Application Specific Integrated Circuit, ASIC), Or one or more integrated circuits configured to implement embodiments of the invention. Wherein, the memory is used to store executable instructions of the processor;

[0124] The memory 109 is used for storing program codes and transmitting the program codes to the processor 110 . The memory 109 can include a volatile memory (Volatile Memory), such as a random access memory (R...

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Abstract

The invention provides a file encryption method, equipment, a file decryption method, equipment and a storage medium. The file encryption method comprises the steps that hardware identification information in a secret key unit is extracted, and first secret key information and second secret key information are generated according to the hardware identification information; a model is built on the basis of the preset secret key information, the second secret key information is set in the set position in an original file, and a first encryption file is obtained; according to the first secret key information, the first encryption file is set to be multiple clip files, the model is recombined on the basis of a preset first clip file, multiple clip files are recombined, and a second encryption file is obtained. Accordingly, encryption and decryption can be effectively conducted on the files according to the hardware identification information of the secret key unit, the security of the files is effectively improved, the probability that the files are looked up illegally is effectively lowered, and the security of the files is greatly improved.

Description

technical field [0001] The present invention relates to the technical field of information security, in particular to a file encryption method, equipment, file decryption method, equipment and a storage medium. Background technique [0002] With the rapid development of computer technology, paperless office has become a trend, and more and more important files are stored in computers. Some of these documents are extremely sensitive documents that may involve personal privacy, company trade secrets, or internal documents of government agencies. For these important documents, once they are viewed or even leaked by unauthorized personnel, the consequences will be unimaginable. Therefore, measures need to be taken to protect these documents and prevent them from being illegally accessed or leaked. [0003] In the prior art, the commonly used file protection method is to use a third-party encryption program to encrypt, and then decrypt it when it needs to be viewed. First, this ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/62H04L9/14H04L9/08
CPCG06F21/6209G06F2221/2107H04L9/0866H04L9/14
Inventor 孙波李轶夫杜雄杰张伟司成祥李应博姜栋王梦禹高昕侯美佳盖伟麟胡晓旭毛蔚轩田东超李海峰陈朴
Owner NAT COMP NETWORK & INFORMATION SECURITY MANAGEMENT CENT