Abstract:

In response to the requirement that some information can be public in the USB but some private information should be protected, the paper proposes a security USB disk system based on virtual volume encryption technology on the basis of the analysis and research of the virtual volume technology. This system divides an USB disk into a regular volume and a virtual safety volume. The data in safety volume is encrypted using AES encryption algorithm, and the use of regular volume and normal USB disk is exactly the same. In this way, the leaking and pervasion of confident information is prevented，and the convenience, flexibility characteristics of the USB disk can be maintained.

Key words: security USB；virtual volume technology；AES encryption algorithm