Patent ID: 8837726
Filing Date: 2014-09-16
Classification: H04L

Abstract:
1. A method comprising: receiving at an encryption device from a control device an encryption request comprising a content protection key (CPK) to be encrypted and an identifier for a decryption device, wherein the control device is controlled by a security provider that provides secure content to the decryption device using the CPK encrypted with a device key that is securely embedded in the decryption device and also stored on the encryption device, wherein the encryption device is provided by a key provider and the device key is not divulged to the security provider in order to prevent a compromise of the device key, and wherein the secure content is secured by encrypting content using a control word that itself is encrypted by the CPK; retrieving at the encryption device the device key based on the decryption device identifier; encrypting the CPK with the device key using a predetermined algorithm; and sending the encrypted CPK to the control device.