File transparent encryption and decryption method and system based on domestic operating system

A transparent encryption and decryption, operating system technology, applied in the field of file transparent encryption and decryption methods and systems, can solve the problems of leaking secrets and files that cannot be protected, and achieve the effect of preventing secrets leaking and ensuring security.

Inactive Publication Date: 2019-12-13
北京明朝万达科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, directory protection products based on the LUKS disk encryption scheme can only implement local protection. When the files in the directory have interactive requirements, or when a trusted process copies files from a protected directory to other directories, or when a trusted process copies files When sending out or sharing with others, the said files cannot be protected, posing a risk of leakage

Method used

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  • File transparent encryption and decryption method and system based on domestic operating system
  • File transparent encryption and decryption method and system based on domestic operating system
  • File transparent encryption and decryption method and system based on domestic operating system

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Embodiment Construction

[0049] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0050] definition:

[0051] VFS: Virtual File System is an abstraction layer that provides a unified file access interface upwards and is compatible with various file systems downwards. It includes not only conventional file systems such as Ext2, Ext4, XFS, and Btrfs, but also pseudo file systems and devices.

[0052] Domestic operating system: Most of them are se...

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PUM

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Abstract

The invention provides a file transparent encryption and decryption method and system based on a domestic operating system. The system comprises a file system calling interface, a file redirection module, a VFS system, a stacked encryption file system, a real file system and a disk system. The file redirection module is used for redirecting files; wherein the stacked encrypted file system is deployed in a domestic operating system kernel layer to intercept and check an access request of a file, and the stacked encrypted file system is formed by inserting a layer of file system driver between aVFS system and a real file system and is used for calling a real file system interface to realize the access request of the file; and the stacked encrypted file system calls the file permission control module to control the file access permission. According to the scheme provided by the invention, the ciphertext is prevented from being divulged under an unauthorized condition, and the operation safety can be ensured.

Description

technical field [0001] The invention relates to the field of information security, in particular to a file transparent encryption and decryption method and system based on a domestic operating system. Background technique [0002] At present, there are relatively mature transparent file encryption and decryption software under the Windows operating system on the market, but with the change of information processing requirements, there is an increasing need for domestic, safe and reliable operating systems and domestic operations. System matching software. There are few existing file encryption and decryption software that support domestic operating systems. [0003] The directory protection products based on the LUKS disk encryption scheme can realize the protection of the files in the specified directory, and only allow the trusted process to access the files in the specified directory. After the system is shut down, the data will be saved in ciphertext, and will not be lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/60G06F21/62
CPCG06F21/602G06F21/604G06F21/6218G06F2221/2107G06F2221/2141
Inventor 王志刚王志海喻波彭洪涛
Owner 北京明朝万达科技股份有限公司
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