Patent ID: 7356848
Filing Date: 2008-04-08
Classification: G06F

Abstract:
1. A method for verifying that a source device that is capable of receiving protected content is authorized to communicate the protected content to a sink device that is capable of descrambling the protected content comprising: receiving at said source device an approval code associated with said source and sink devices, the approval code being determined using identifiers uniquely associated with said source and sink devices; determining, in said source device, a local code using data associated with said source and sink devices, the local code being determined using data from said sink device and a source identifier prestored in said source device; and comparing, in said source device, at least a portion of said approval code to at least a portion of said local code, verifying that the sink device is authorized to receive the protected content from said source device in response to the comparison, and providing access to the protected content to the sink device in response to the verifying step.