System and method for obtaining and sharing media content

• US 8,498,942 B2
• Filed: 04/20/2012
• Issued: 07/30/2013
• Est. Priority Date: 11/21/2003
• Status: Expired due to Term

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Hug, Joshua D.
• Primary Examiner(s): CHEUNG, CALVIN K
• Application Number:
  US13/452,611
• Publication Number:
  US 20120215699A1
• Time in Patent Office: 466 Days
• Field of Search: 705/52, 705/54, 705/57, 705/908
• US Class Current: 705/59
• CPC Class Codes: G06F 21/1011 to devices
• CPC Class Codes: G06F 21/1015 to users
• CPC Class Codes: G06F 2221/2103 Challenge-response
• CPC Class Codes: G06F 2221/2115 Third party
• CPC Class Codes: G06F 2221/2137 Time limited access, e.g. to a computer or data
• CPC Class Codes: H04L 2209/24 Key scheduling, i.e. generating round keys or sub-keys for block encryption
• CPC Class Codes: H04L 2209/64 Self-signed certificates
• CPC Class Codes: H04L 63/123 received data contents, e.g. message integrity
• CPC Class Codes: H04L 67/60 Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources admission control or resource allocation H04L47/70
• CPC Class Codes: H04L 9/3247 involving digital signatures
• CPC Class Codes: H04L 9/3263 involving certificates, e.g. public key certificate [PKC] or attribute certificate [AC]; Public key infrastructure [PKI] arrangements network architectures or network communication protocols for supporting authentication of entities using certificates in a packet data network H04L63/0823
• CPC Class Codes: H04N 21/25816 involving client authentication restricting access to computer systems by authenticating users using a predetermined code G06F21/33; cryptographic authentication protocols H04L9/32; networks authentication protocols H04L63/08; authentication in wireless network security H04W12/06
• CPC Class Codes: H04N 21/4108 characterised by an identification number or address, e.g. local network address protecting specific internal or external computer components using identification number G06F21/73; network arrangements, protocols or services for addressing or naming H04L61/00
• CPC Class Codes: H04N 21/4325 by playing back content from the storage medium reproduction of recorded television signals H04N5/76; reproduction of recorded television signals H04N9/79
• CPC Class Codes: H04N 21/44204 Monitoring of content usage, e.g. the number of times a movie has been viewed, copied or the amount which has been watched monitoring of user activities for profile generation for accessing a video database G06F16/739; protecting generic digital content where the protection is independent of the precise nature of the content G06F21/10; arrangements for monitoring the use made of the broadcast services in broadcast systems H04H60/31
• CPC Class Codes: H04N 21/4627 Rights management associated to the content security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/6334 for authorisation, e.g. by transmitting a key wireless communications network key management H04W12/04; wireless communications network access security H04W12/08
• CPC Class Codes: H04N 7/17309 Transmission or handling of upstream communications
• CPC Class Codes: Y10S 705/902 Licensing digital content

Abstract

A device initialization method includes generating a license request for a personal media device. A timeout indicator may be obtained for a subscription associated with the personal media device. The license request and the timeout indicator may be combined to form a device license for the personal media device. The device license may be digitally-signed to form a signed device license.

Claims

1. A method of transferring an encrypted media data file from a source electronic device to a target electronic device, the method comprising:

receiving an indication from the source electronic device that an encrypted media data file is available for transfer to the target electronic device;

providing to the source electronic device a target device license to indicate that the target electronic device has a valid subscription to a media distribution system from which the media data file was transferred to the source electronic device, wherein the target device license is unique to the target device and different from a source device license for the encrypted media data file;

receiving the encrypted media data file from the source electronic device, the encrypted media data file being transferred from the source electronic device to the target electronic device responsive to the source electronic device providing an indication of having a valid subscription;

storing the received encrypted media data file within a storage device of the target electronic device responsive to the target electronic device having a valid subscription;

decrypting the encrypted media data file with the target electronic device to generate a decrypted media data file; and

rendering the decrypted media data file with the target electronic device.

2. The method of claim 1, wherein the target device license is a valid device license for the encrypted media data file and includes a timeout indicator to provide an expiration date of the subscription to the media distribution system.

3. The method of claim 1, further comprising disabling the decrypting or preventing the rendering of the encrypted media data file responsive to expiration of the subscription to the media distribution system.

4. The method of claim 1, further comprising indicating that the target electronic device has an invalid subscription, which includes:

indicating that the subscription is invalid after;

an expiration of a predetermined time period; and

a valid device license has not been provided to the target electronic device during the predetermined time period.

5. The method of claim 1, wherein the target device license is generated by the media distribution system and comprises a timeout indicator, a target device digital certificate, and an encrypted user encryption key.

6. The method of claim 5, wherein the target device license further comprises a licensing service digital certificate.

7. A non-transitory computer readable storage medium having a plurality of instructions stored thereon which, when executed by a processor, cause the processor to perform operations comprising:

receiving indication from the source electronic device that an encrypted media data file is available for transfer to a target electronic device;

providing to the source electronic device a target device license to indicate that the target electronic device has a valid subscription to a media distribution system from which the media data file was transferred to the source electronic device, wherein the target device license is unique to the target device and different from a source device license;

receiving the encrypted media file from a source electronic device, the encrypted media data file being transferred from the source electronic device to the target electronic device responsive to the source electronic device providing an indication of having a valid subscription;

storing the received encrypted media data file within a storage device of the target electronic device responsive to the target electronic device having a valid subscription;

decrypting the encrypted media data file with the target electronic device to generate a decrypted media data file; and

rendering the decrypted media data file with the target electronic device.

8. The method of claim 7, wherein the target device license is generated by the media distribution system and comprises a timeout indicator, a target device digital certificate, and an encrypted user encryption key.

9. The method of claim 8, wherein the target device license further comprises a licensing service digital certificate.

10. A method for transferring a media data file from a source electronic device to a target electronic device comprising:

indicating that an encrypted media data file is available for transfer to the target electronic device;

receiving an indication on the source electronic device to transfer the media data file to a target electronic device;

receiving from the target electronic device an indication that the target electronic device has a valid subscription, the indication comprising a target device license that is unique to the target device and different from a device license of the source electronic device;

transferring the media data file to the target electronic device in response to the indication to transfer the media data file and in response to the source electronic device providing an indication of having a valid subscription; and

enabling a rendering of the media data file on the target electronic device responsive to the target electronic device having a valid subscription.

11. The method of claim 10 further comprising:

indicating that the subscription is invalid after an expiration of a predetermined time period; and

disabling a decrypting or preventing the rendering of the encrypted media file responsive to the indicating that the subscription is invalid.

12. The method of claim 10 further comprising:

verifying the integrity of the target electronic device license.

13. The method of claim 10 wherein the target electronic device license is digitally-signed by a licensing service.

14. The method of claim 10, wherein the target device license is generated by the media distribution system and comprises a timeout indicator, a target device digital certificate, and an encrypted user encryption key.

15. The method of claim 14, wherein the target device license further comprises a licensing service digital certificate.