Encryption method of removable disc

Abstract

The invention discloses an encryption method of a removable disc, and belongs to the disc encryption technology. The removable disc is provided with two storage areas, one storage area is an encryption sub-area, a compact disc read-only memory (CD-ROM) drive letter is arranged in a disc equipment table of the removable disc, and an authenticated user can access the encryption sub-area by accessing the CD-ROM drive letter. The encryption method is used for encrypting the removable disc, the disc is accessed through the method of accessing the CD-ROM, the CD-ROM is read-only, the content of the CD-ROM is not changed, so that virus and artificial damage to the removable disc is prevented, and high safety is achieved. By encrypting the storage disc, data of the user can be encrypted, the data can not be decrypted without a user code, and therefore safety of the data of the user is improved. The encryption method can be realized in a full software mode, an additional decryption chip is not needed, and realization cost is lowered.

Description

technical field [0001] The invention relates to disk encryption technology, in particular to a removable disk encryption method. Background technique [0002] With the continuous development of storage technology, the portability, access speed and storage capacity of removable disks are constantly improving. Removable disks are characterized by small size, shock resistance, portability, and diverse and novel appearances. Now the commonly used capacities are 8G and 16G. [0003] At present, the application of removable disks is becoming more and more widespread, almost reaching the level of one or even several people. However, with the continuous expansion of the application range, the security issues of its stored data are becoming more and more prominent. There are mainly three existing removable disk encryption methods: [0004] Password encryption: This method only hides the files in the disk, sets the access password, and encrypts by verifying the user's identity, wit...

AI Technical Summary

Problems solved by technology

The advantage of this method is that the security level is high, but the disadvantage is that a special hardware encryption and decryption chip is required for encryption, and the encryption and decryption speed must reach more than 30MB / S. For example, the AS700 series encryption chip of Shengyuan chip has a high hardware cost.

[0007] Therefore, there is currently no encryption method that can achieve low-cost and high-security removable disk encryption

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