Patent ID: 8433926
Filing Date: 2013-04-30
Classification: H04N

Abstract:
1. At least one non-transitory computer-readable medium encoded with instructions which, when executed by a processor of a set top box, performs a method comprising: encrypting received content using a first cryptography key uniquely associated with the set top box; storing the encrypted content on a digital storage medium; encrypting the first cryptography key using an asymmetric public encryption key stored in a secure protected location in the set top box to form an encrypted first cryptography key; storing the encrypted first cryptography key on the digital storage medium; sending a request to receive a private asymmetric decryption key capable of decrypting the encrypted first cryptography key to an MSO or other service provider; and receiving for use on a limited basis from the MSO the requested private asymmetric decryption key to decrypt the encrypted first cryptography key, wherein the asymmetric private decryption key is installed in a secure, protected storage location of the set top box for use on the limited basis.