SECURE DIGITAL CONTENT SHARING METHOD, DEVICE, AND SYSTEM

The present invention relates to the technical field of digital copyright protection, and particularly, to a method, a system and a device for securely sharing digital contents, which are used for solving the problem of securely expanding a sharing range of the digital contents. The method comprises: a second device transmitting a preset first content sharing trust degree to first device owning the digital contents; wherein the first content sharing trust degree indicates a trust degree of the second device in the third device's being qualified to share the digital contents; the first device determining a second content sharing trust degree according to the received first content sharing trust degree and a preset content-sharing recommending trust degree, determining whether a condition of authorizing the third device to use the digital contents is met according to the second content sharing trust degree, and authorizing the third device to use the digital contents after determining that the condition is met. Therefore, with the method, the sharing range of the digital contents can be expanded on the premise of ensuring security.