A file encryption and decryption method

Abstract

This application discloses a file encryption and decryption method. The file encryption method includes: obtaining user identity information; performing first processing on the file through the user identity information according to preset conditions to obtain a pre-processed file; judging whether the file needs to be Encrypting, if yes, encrypting the preprocessed file. This solution can also encrypt and decrypt files by writing user information in the hardware device according to the preset conditions in the disconnected state, preventing threats in the network environment, and the encryption is set according to the preset conditions Yes, remote malware is difficult to crack, improving information security.

Description

technical field [0001] This application relates to the field of data processing, in particular to a file encryption and decryption method. Background technique [0002] At present, there are many ways to encrypt files, but with the proliferation of Trojan horses, file passwords are easily cracked by remote Trojan horse software. In addition, when file passwords are stolen by others, files can also be accessed in other places. [0003] It is known that a Chinese patent document (publication number: CN201610892459.6A) discloses an embedded terminal encryption system and encryption method combining software and hardware, and (publication number: CN201110080951.0) discloses an account for network login authentication Binding system, the above two schemes double-encrypt files through wireless communication and network services, and increase the threat from malware in the network environment. Once the malware is downloaded, information security and integrity may be compromised. d...

AI Technical Summary

Problems solved by technology

[0002] At present, there are many ways to encrypt files, but with the proliferation of Trojan horses, file passwords are easily cracked by remote Trojan horse software. In addition, when file passwords are stolen by others, files can also be accessed in other places.

[0003] It is known that a Chinese patent document (publication number: CN201610892459.6A) discloses an embedded terminal encryption system and encryption method combining software and hardware, and (publication number: CN201110080951.0) discloses an account for network login authentication Binding system, the above two schemes double-encrypt files through wireless communication and network services, and increase the threat from malware in the network environment. Once the malware is downloaded, information security and integrity may be compromised. destroy

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