Method for realizing universal series bus key compound equipment

Abstract

The invention discloses a compound device method for realizing a universal serial bus key belonging to the compound device range. The composite device is connected to the host and reports to the host that it is a mass storage device; the host sends a URB packet to the composite device, and the composite device judges the source of the command, and then processes it according to the standard storage SCSI command or parses the user from a specific command. Custom commands. Then return to the host in the form of USB command packet. The invention adopts the universal serial bus protocol including the communication between the device and the host, the self-defined information security device protocol and the user interface library. In the existing operating system, it appears as a common storage device, and realizes the function of an information security device through the provided API. Functionally, it has the common advantages of MESS STORAGE devices and information security devices, and has good usability.

Description

technical field [0001] The invention belongs to the scope of composite equipment, and in particular relates to a method for realizing the composite equipment of a universal serial bus key. Background technique [0002] Existing composite devices refer to devices in which one device completes the functions of two or more different devices. It utilizes the Universal Serial Bus STORAGE technology, through the Universal Serial Bus block transfer protocol, to combine two or more devices with different functions into one device, which has good usability. Devices that use this Universal Serial Bus STORAGE technology usually include: [0003] The first category of removable storage devices includes: magnetic disks, optical disks, disk-optical composite devices, and printers. [0004] The second type of information security equipment includes software protection equipment and identity verification security equipment. [0005] At present, removable storage devices have been widely ...

AI Technical Summary

Problems solved by technology

[0005] At present, removable storage devices have been widely popularized, but because removable storage devices do not have the function of information security equipment other than storing data, and at present, for example, identity verification devices and software protection devices are similar in shape to removable storage devices, but completely functional. It is not the same; the space of the removable storage device is usually relatively large, and the space of the information security device is much smaller; in this way, according to the needs of users, many users may use these two types of devices at the same time, which will cause certain inconvenience and waste of resources. In addition, since the space of the U disk is relatively large, while the space of the information security device is relatively small, the data space of the removable storage device and the space of the information security device can be shared, so that resources can be used more effectively.

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