Encrypted USB flash disk and authorization method

An encryption algorithm and selective encryption technology, applied in the field of storage, can solve the problem of changing the data storage space of U disk, and achieve the effect of sufficient encryption algorithm, more storage space, and improved storage efficiency

Active Publication Date: 2021-09-21
广东全芯半导体有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the present invention provides an encrypted U disk and an authorization method, which can solve the problem of changing the data storage space of the U disk without increasing the capacity of the U disk

Method used

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  • Encrypted USB flash disk and authorization method
  • Encrypted USB flash disk and authorization method

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Embodiment Construction

[0060] In order to make the objects and advantages of the present invention clearer, the present invention will be further described below in conjunction with the examples; it should be understood that the specific examples described here are only for explaining the present invention, and are not intended to limit the present invention.

[0061] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention.

[0062] It should be noted that, in the description of the present invention, terms such as "upper", "lower", "left", "right", "inner", "outer" and other indicated directions or positional relationships are based on the terms shown in the accompanying drawings. The direction or positional relationship shown is ...

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Abstract

The invention relates to an encrypted USB flash disk and an authorization method, and the encrypted USB flash disk comprises a USB interface which is used for receiving to-be-encrypted data transmitted by a host; a detection unit which is used for detecting the data volume of the to-be-encrypted data; a buffer area which comprises a first address list, a second address list, a third address list and a fourth address list which are arranged in sequence, and a data storage area which is used for storing encrypted data; and a central control unit which is respectively connected with the detection unit, the buffer area and the data storage area, and is used for selecting a corresponding encryption rule from the buffer area according to a detection result of the detection unit to encrypt the to-be-encrypted data and then storing the to-be-encrypted data to the data storage area. According to the method, the addresses in the cache region are partitioned, so that the encryption rules in the different address partitions are selected according to different actual data volumes to encrypt the to-be-encrypted data, the encryption of the data is more intelligent, and the storage speed and the storage safety of the data during storage are doubly guaranteed.

Description

technical field [0001] The invention relates to the field of storage technology, in particular to an encrypted USB disk and an authorization method. Background technique [0002] Today, with the rapid development of electronic information technology, the storage of information and the security of information storage have become people's concerns. As an independent device for storing data, U disk is favored by people because of its small size and easy portability. U disk is widely used. [0003] However, the existing space occupied by the storage of the encryption algorithm in the U disk is relatively large, so that the space of the actual data storage is limited, and the storage space of the U disk is greatly compressed. Usually, in order to increase the storage space, the storage space of the U disk must be increased. The capacity is improved, which in turn increases the cost. Contents of the invention [0004] Therefore, the present invention provides an encrypted U di...

Claims

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Application Information

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IPC IPC(8): G06F21/79G06F21/60
CPCG06F21/79G06F21/602
Inventor 李锦光
Owner 广东全芯半导体有限公司
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