| 摘要 |
<p>The present invention discloses a compound universal serial bus (usb) device and an implementation method thereof, which relates to the information security field, and solves the problem of integrating mass storage function and intelligent key function in a single equipment. The compound usb device establishes a connection with a host and declares its device type; the compound usb device receives an operation instruction distributed from the host and judges whether the operation instruction is an intelligent key operation instruction; if it is, then the compound usb device implements the intelligent key operation indicated in the operation instruction; otherwise, the compound usb device implements data read/write operation. In the invention, mass storage and information security function are integrated in a single equipment, thus using conveniently, improving the data security and enhancing user's experience.</p> |
