Optical media recording device for protecting device keys and related method

摘要

To protect device keys, an optical media recording device capable of performing AACS encryption on data does not have any device keys, and the optical media recording device performs AACS encryption by activating recording software stored in a memory the optical media recording device, and utilizing a pre-calculated media key stored in the memory of the optical media recording device to perform AACS encryption on the data.

主权项

1. A method of performing AACS encryption in an optical media recording device, the method comprising:
activating recording software having no AACS device keys stored in the optical media recording device, the recording software being used by an end user, the AACS device keys being omitted from the recording software without hindering usage of the recording software by the end user, and preventing revocation of the AACS device keys provided by an AACS licensing administrator; and the recording software utilizing a pre-calculated media key stored in a memory of the optical media recording device to perform AACS encryption of data, wherein the pre-calculated media key is calculated based on the AACS device keys and a media key block by a server, and the AACS device keys are provided by an AACS licensing administrator (AACS LA) to the server; wherein the pre-calculated media key is packaged in an installation file of the recording software.