Multiple interface auxiliary digital copy right management method for USB storage device

Abstract

The present invention provides a multiple interface aided USB storage device for digital copyright management. One host computer is connected to one USB storage device to execute digital copyright management. Firstly, after the USB storage device is plugged, the host computer requires the USB storage device to send out descriptor to transmit the function, capacity and other information to the host computer; and then, the USB storage device transmits the descriptor of characteristic of interfaces to the host computer for selects several storage device interfaces. While the host computer accesses digital signature or private cipher key data, random number variable is taken as the coding parameter, one interface is selected from several for storing secrete data, the selected interface sends out the coded cipher, and the USB storage device returns the cipher confirming result to the host computer. Finally, the host computer, after confirming, transmits the secrete data in the interface.

Description

technical field [0001] The invention relates to the technical field of a digital rights management method in a USB storage device, especially a method for assisting digital rights management with multiple interfaces in a USB storage device. Background technique [0002] It is known that digital signature or private key data used for digital rights management are generally stored in a file format on a storage device. When in use, a terminal device reads the digital signature or private key data, and then sends it to the digital rights management server to confirm the authority, and then the digital content can be operated normally. Since the digital signature or private key data exists in the form of a file, the current practice makes it easy for a third party to steal the file of the digital signature or private key data, causing the risk of improper distribution of the signature. [0003] Therefore, in order to prevent the digital signature or private key from being improp...

AI Technical Summary

Problems solved by technology

Since the digital signature or private key information exists in the form of a file, the current practice makes it easy for a third party to steal the file of the digital signature or private key information, putting the signature at risk of being improperly disseminated

[0003] Therefore, in order to prevent the digital signature or private key from being improperly distributed, other mechanisms must be used to prevent it, such as connecting to the server every time the digital content is used, which will cause inconvenience to the user's operation and increase management costs

At the same time, since the digital signature or private key exists in the form of a file, it is impossible to control the user from accidentally deleting or modifying the content of the digital signature or private key, which will cause confusion in operation and verification. Therefore, the known digital signature There are still many deficiencies in the design of the method of using chapter or private key data, and it is necessary to improve

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