An encrypted storage disk

Abstract

The invention provides an encrypted storage disc. The encrypted storage disk has the functions of data encryption and decryption. The encrypted storage disk comprises a communication interface connector, a bridge control circuit, a common hard disk and an encryption and decryption circuit, wherein when a host stores the data in an encryption and decryption disk, the bridge control circuit sends the data to the encryption and decryption circuit for encrypting, then the bridge control circuit stores the encryption data in the common hard disk so as to realize the function of data encryption; when the host reads the data of the encryption storage disk, the bridge control circuit reads the data from the common hard disk and sends the data to the encryption and decryption circuit for decryption, then the bridge control circuit uploads the decrypted data to the host so as to realize the data decryption function. By adopting the encryption storage disk realized by the technical scheme of the invention, various encryption algorithms and communication interfaces can be flexibly allocated; the market requirements of different levels, different countries and regions can be satisfied.

Description

technical field [0001] The invention relates to the fields of computer data storage and data security, in particular to an encrypted storage disk with data encryption and decryption functions. Background technique [0002] For a long time, the data security of computer storage devices (storage disks) has attracted much attention, and various storage disks with encryption functions have been launched on the market, such as encrypted memory cards, encrypted U disks, and encrypted hard disks. [0003] The structure of a general storage disk is composed of a communication interface, a disk controller chip (or a bridge control chip), and a storage medium. The design scheme of a typical encrypted storage disk is to build the encryption algorithm module into the disk controller chip, that is, to use a single chip to realize the functions of data storage and encryption and decryption. The above-mentioned single-chip solution has the following problems and defects: it is difficult t...

AI Technical Summary

Problems solved by technology

The above-mentioned single-chip solution has the following problems and defects: it is difficult to be compatible with various encryption algorithms, especially new encryption algorithms, so it is difficult to meet the encryption algorithm requirements of customers at various levels and in different countries or regions; in addition, the disk controller chip The communication mode of the interface with the computer is relatively single, and the flexibility is poor. It is difficult to realize storage disks with different interface types, and it is also difficult to adopt a new generation of communication interface with higher transmission rate.

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