A novel secure virtual storage device scheme

Confidential data in our computer is always threatened by the risk of internal staff and external hacker. Secure document system may be a best solution to settle this problem and it is always too expensive and too complicated. The Paper researches the framework of current secure file system, and proposes a secure scheme of virtual storage device. Compared to the secure file system, the virtual storage device is less secure but much simpler in usage and less cost. The paper forwards implement of the virtual storage device, especially the key part. Moreover, we have also developed a prototype which could read and write properly with encryption and decryption. According to the result of test, the virtual storage device could get fast I/O speed and rigorous security.