Method and system for accessing virtual disk

Abstract

A method and system for accessing a virtual magnetic disk. The method comprises: starting a project, loading a virtual magnetic disk module, and registering a drive letter corresponding to a virtual magnetic disk path (S1); intercepting a related API function accessing a virtual magnetic disk process, so that a system firstly processes a file operation analog function of the virtual magnetic disk module when the API function is called (S2); and returning the analog function processing result to a system API function, and outputting a result parameter (S3). In this way, required data can be normally accessed and process isolation can be implemented at the same time, thereby improving the security of a virtual magnetic disk.

Description

technical field [0001] The invention relates to the technical field of data security, in particular to a method and system for accessing a virtual disk. Background technique [0002] In the current project, to decrypt an encrypted file, the file is relatively small and can be directly decrypted in the memory and stored in the string memory; when the file is relatively large and the number of files is large, it is usually compressed into one file and then Encryption, in the process of decryption, they are directly placed in a relatively hidden folder that is not easily found by users. These two methods are either cumbersome in management or problematic in security. [0003] figure 1 It is a conventional access process processing method in the prior art. Although the virtual disk can save data, it also faces the same problem in terms of security. Since the virtual disk is implemented by reading and writing specified files through the driver layer IO, taking WINDOWS as an e...

AI Technical Summary

Problems solved by technology

Therefore, for some important files, the data security cannot be guaranteed, or the data security threshold cannot be raised

Specifically, the data is exposed under the disk corresponding to the virtual drive letter, which is easy to be discovered and accessed, or even tampered with; process isolation cannot be performed, and all processes can access the disk, and data security cannot be guaranteed after the system is infected with a virus

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