Content is encrypted according to a content key (CK) ((CK(content))), (CK)
is protected according to a license server public key (PU-DRM), and
rights data associated with the content is retrieved from a rights
template and protected according to (PU-DRM). The protected items and a
digital signature from the rights template are submitted as a rights
label to the license server for signing. The license server verifies the
rights template signature, and if such signature verifies signs the
rights label to result in a signed rights label (SRL), and returns same.
The SRL is concatenated with (CK(content)) and both are distributed to a
user. To render the content, the user submits the SRL to the license
server to request a license.