Data protection method of USB storage device based on magnetic disc virtual technology

Abstract

The invention provides a data protection method of a USB (Universal Serial Bus) storage device based on a magnetic disc virtual technology. The data protection method comprises the following steps: 10) generating a U-disc verification key, a user verification key and an encryption and decryption key through a U-disc initialization module, dividing a U disc into an ordinary partition, an encryption partition and a log partition, and hiding the encryption partition and the log partition; 20) enabling the encryption and decryption key to disappear after performing strategy encryption on the U disc and saving the U-disc verification key and the user verification key; 30) calculating a user key through an authentication module by utilizing an access key, further calculating the encryption and decryption key by the user key and the user verification key and verifying a strategy and the U-disc verification key; 40) enabling authentication to succeed, accessing the encryption partition by a user, and operating a recording module to record an operation action of the encryption partition into the log partition; and 50) terminating access and relieving the carrying between a virtual device and a window roll through a device carrying module. According to the data protection method disclosed by the invention, the data protection function of the USB storage device can be realized in a software layer.

Description

【Technical field】 [0001] The invention relates to a data protection method of a USB storage device based on disk virtual technology. 【Background technique】 [0002] The application of USB storage devices has been quite extensive, and the use of USB storage devices is easy to cause data leakage, so the issue of data confidentiality and security has become increasingly prominent. In the prior art, a secure USB flash drive is commonly used for encryption of USB storage devices. The secure USB flash drive mainly includes two parts: user authentication and transparent encryption and decryption of data at the hardware layer. However, because the security USB flash drive needs special hardware to realize data protection, the existing secure USB flash drives on the market are all based on the hardware layer to realize the data protection function, which cannot solve the data security problem of a large number of existing USB storage devices of users, and is safe to use. It is very ...

AI Technical Summary

Problems solved by technology

However, because the security USB flash drive needs special hardware to realize data protection, the existing secure USB flash drives on the market are all based on the hardware layer to realize the data protection function, which cannot solve the data security problem of a large number of existing USB storage devices of users, and is safe to use. The cost of replacing a large number of existing ordinary USB storage devices with U disk is very high and causes waste of resources.

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