Data encryption and decryption device and method for USB storage devices

A storage device, encryption and decryption technology, applied in the protection of internal/peripheral computer components, etc., can solve the problems of high price, slow encryption and decryption, low security factor, etc., and achieve the effect of high security

Active Publication Date: 2014-07-02
HANGZHOU NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, people use more and more storage devices, and most of them are USB storage devices. Although there are storage devices with encryption cards, they are expensive; in addition, software encryption is also commonly used, which can achieve some encryption purposes. But the safety factor is not high, and the encryption and decryption speed is slow

Method used

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  • Data encryption and decryption device and method for USB storage devices

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Embodiment Construction

[0027] A device capable of supporting data encryption and decryption of a USB storage device, which includes a device with a USB interface communicating with a host, a device with a USB slot communicating with a storage terminal, a storage device control module, an encryption and decryption module, Key management module, data decompression module, power supply and clock generation circuit.

[0028] The device with a USB interface and the host communicating with the host, the device with a USB slot communicating with the storage terminal and the USB storage device are all connected through the USB port, and support USB2.0 and USB3.0.

[0029] The encryption device using the AES symmetric algorithm in the present invention can perform encryption and decryption level storage operations only when the input key is correct.

[0030] The method for encrypting the data encryption and decryption of the USB storage device is to encrypt the data of the USB interface at the hardware level...

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Abstract

The invention discloses a data encryption and decryption device and method for USB storage devices. The method of using the device includes connecting an encipherer to a computer and the USB storage device, inputting a correct key, and performing encryption, decryption and storage operations on data. The device comprises a device which communicates with a master and which is provided with a USB interface, a data decompression module, a device which communicates with a storage terminal and which is provided with a USB slot, a storage device control module, an encryption and decryption module, a key management module, a power supply and a generating circuit of a clock. The encryption and decryption module performs encryption and decryption in a manner of multiple cipher engine concurrent. The method is used for encrypting and decrypting data in the storage device provided with a USB interface on the basis of the encipherer, and has the advantages of high safety, compatibility and generality and high-speed storage.

Description

technical field [0001] The invention relates to the technical field of data hardware encryption, in particular to an encryptor and an encryption and decryption method for encrypting and decrypting data of a USB storage device. Background technique [0002] As data security becomes more and more important, how to protect data in data storage devices from infringement has become a hot topic. At present, people use more and more storage devices, and most of them are USB storage devices. Although there are storage devices with encryption cards, they are expensive; in addition, software encryption is also commonly used, which can achieve some encryption purposes. But the safety factor is not high, and the encryption and decryption speed is slow. Contents of the invention [0003] In order to overcome the above-mentioned shortcomings, the object of the present invention is to provide a device and method for data encryption and decryption of USB storage devices. When in use, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/78
CPCG06F21/78
Inventor 吴杰王付军沈珊瑚
Owner HANGZHOU NORMAL UNIVERSITY
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