Secure transcoding of content

摘要

A source device determines content rights for encrypted content in the first encoding standard using a first rights data file. The source device creates a second rights data file for transcoded content in the second encoding standard. The source device performs a key management operation including communicating a decryption key for the encrypted content in the first encoding standard to a transcoder. The source device transfers the encrypted content in the first encoding standard to the transcoder. The transcoder decrypts the encrypted content, transcodes the content from the first encoding standard to the content in the second encoding standard, and re-encrypts the content in the second encoding standard using a second encryption key. The transcoder then transfers the encrypted content in the second encoding standard to an indicated device.

主权项

1. A source device having encrypted content in a first encoding standard, the source device comprising:
a data storage configured to store a first rights data file, wherein the first rights data file includes a first content ID, and a first encryption key, and indicates content rights including whether transcoding of the encrypted content in the first encoding standard to encrypted content in a second encoding standard is allowed; a processor configured to
determine the content rights for the encrypted content in the first encoding standard using the first rights data file;in response to determining the transcoding of the encrypted content into the second encoding standard is allowed, create a second rights data file for transcoded content in the second encoding standard, wherein the second rights data file includes a second content ID, and a second encryption key, and indicates second content rights;perform a key management operation including communicating a decryption key for the encrypted content in the first encoding standard and the second encryption key for the encrypted content in the second encoding standard to a transcoder; andtransfer the encrypted content in the first encoding standard to the transcoder.