Method for protecting contents, method for sharing contents and device based on security level

摘要

A method for using contents, a method for sharing contents, and a device based on security level are disclosed. A method for using contents based on security level creates a device security level according to the number of device identification elements, receives contents, and if the device security level is found to be a minimum allowed device security level for using the contents, uses the contents. Therefore, a device that does not satisfy the conditions required for using contents cannot use the contents, whereby security is reinforced.

主权项

1. A method for using contents based on security level, comprising:
setting a device security level that indicates how accurately a device can be identified, the device security level being based on information on one or more device identification elements extracted from the device, wherein the information on the one or more device identification elements is used to organize a device fingerprint that uniquely identifies the device and includes at least one of: a processor identifier of the device, a BIOS identifier of the device, a set-top box identifier of the device and a hard drive identifier of the device; receiving contents; and using the content on determining that the device security level satisfies a minimum allowed device security level criterion for using the contents, wherein setting the device security level comprises: setting the device security level at a first level upon determining that the information on the one or more device identification elements includes at least one of: the processor identifier of the device, the BIOS identifier of the device, the set-top box identifier of the device, and the hard drive identifier of the device, and excludes at least one of: the processor identifier of the device, the BIOS identifier of the device, the set top box identifier of the device and the hard drive identifier of the device, setting the device security level at a second level upon determining that the information on the one or more device identification elements includes the processor identifier of the device, the BIOS identifier of the device, the set top box identifier of the device and the hard drive identifier of the device, and setting the device security level at a third level upon determining that the information on the one or more device identification elements includes the processor identifier of the device, the BIOS identifier of the device, the set top box identifier of the device, the hard drive identifier of the device and an additional identifying element.