Credible USB flash disk implementation method based on file filtering driver

Abstract

The invention discloses a credible USB flash disk implementation method based on a file filtering driver, which comprises the following steps that: S1, a user initiates a USB flash disk operation, andan access request of the user to the USB flash disk is forwarded to a kernel layer by a Windows operating system and is intercepted by an input / output manager; s2, the input / output manager activatesa filtering manager according to the intercepted request type, and loads and calls a corresponding file filtering driver to process the request; s3, after receiving the passing message, the filteringmanager forwards the USB flash disk access request to a file system driver at a lower layer for further processing, so that access to the authorized encrypted USB flash disk is allowed; on the contrary, if it is detected that the ID is not matched, further issuing of the input and output request is stopped in the filtering driver, and therefore read-write access to the unauthorized USB flash diskis forbidden. According to the invention, only the designated computer is allowed to access the designated USB flash disk in an environment requiring high data confidentiality.

Description

technical field [0001] The invention relates to the technical field of network security, in particular to a method for realizing a trusted U disk based on a file filter driver. Background technique [0002] In modern society, the common method of file sharing is to transfer files through computer network, but the disadvantage of this method is that the computers that need to share files are interconnected on the network, otherwise files and data cannot be transferred. The compact and easy-to-carry mobile U disk can easily copy and share data between computers, which makes up for the lack of network transmission methods, and thus becomes an important information transmission tool in people's daily work and life. [0003] However, anyone can use any computer to access the data and files in the ordinary U disk, which is prohibited in some specific fields or usage scenarios involving secrets, such as government departments, companies and industrial control fields, etc. It is no...

AI Technical Summary

Problems solved by technology

[0003] However, anyone can use any computer to access the data and files in the ordinary U disk, which is prohibited in some specific fields or usage scenarios involving secrets, such as government departments, companies and industrial control fields, etc. In the case of cross-disc use, it is not allowed, and it brings huge challenges and security risks to the confidentiality of confidential information and data

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