METHOD AND APPARATUS FOR AUTOMATICALLY OBTAINING DIGITAL CINEMA DECRYPTION KEYS

• US 20140341376A1
• Filed: 12/13/2012
• Published: 11/20/2014
• Est. Priority Date: 12/14/2011
• Status: Abandoned Application

• Current Assignee: Thomson Licensing (Vantiva SA)
• Original Assignee: Thomson Licensing SA (Vantiva SA)
• Inventors: Redmann, William Gibbens, Mitchell, Nicholas Curtis
• Application Number:
  US14/360,815
• Publication Number:
  US 20140341376A1
• Time in Patent Office: Days
• US Class Current: 380/201
• CPC Class Codes: H04L 2209/24 Key scheduling, i.e. generating round keys or sub-keys for block encryption
• CPC Class Codes: H04L 9/30 Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
• CPC Class Codes: H04N 21/26258 for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list retrieval of multimedia data based on playlists G06F16/40
• CPC Class Codes: H04N 21/26613 for generating or managing keys in general key distribution for secret or secure communication involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP] H04L9/083; network support of key management H04L63/06; key management for network security in communication control or processing H04W12/04
• CPC Class Codes: H04N 21/2665 Gathering content from different sources, e.g. Internet and satellite
• CPC Class Codes: H04N 21/41415 involving a public display, viewable by several users in a public space outside their home, e.g. movie theatre, information kiosk
• CPC Class Codes: H04N 21/835 Generation of protective data, e.g. certificates protecting software against unauthorised usage in a vending or licensing environment G06F21/10
• CPC Class Codes: H04N 7/1675 Providing digital key or authorisation information for generation or regeneration of the scrambling sequence pseudo-random number generators in general G06F7/58

Abstract

A method and system are disclosed for providing decryption key information in a digital cinema package. Information relating to at least the source of a decryption key is included in the digital cinema package.

Claims

1. A digital cinema package, comprising:

key source information relating to at least one source of a decryption key for decrypting content in the digital cinema package.

2. The digital cinema package of claim 1, wherein the key source information is provided in at least one file in the digital cinema package.

3. The digital cinema package of claim 1, wherein the file has a format compliant with existing standards.

4. The digital cinema package of claim 1, wherein the key source information is provided in a file selected from at least one of:

an asset map, a packing list, a composition play list and an asset track file.

5. The digital cinema package of claim 1, wherein the key source information indicates at least one location of the decryption key and a method of obtaining the decryption key.

6. The digital cinema package of claim 1, wherein the key source information is provided as text comprising at least one uniform resource locator.

7. The digital cinema package of claim 6, wherein the at least one uniform resource locator identifies at least one of:

an email address, phone number, file transfer protocol server, and hypertext transfer protocol server.

8. A method of providing decryption key information for digital cinema content, comprising:

providing key source information relating to at least one source of a decryption key for decrypting content in a digital cinema package, the key source information being provided in the digital cinema package.

9. The method of claim 8, further comprising:

providing the key source information in at least one file in the digital cinema package.

10. The method of claim 9, further comprising:

providing the file in a format compliant with existing standards.

11. The method of claim 9, further comprising:

providing the key source information in the file selected from at least one of;

an asset map, a packing list, a composition play list and an asset track file.

12. The method of claim 8, wherein the key source information indicates at least one location of the decryption key and a method of obtaining the decryption key.

13. The method of claim 8, further comprising:

providing the key source information as text comprising at least one uniform resource locator.

14. The method of claim 13, wherein the at least one uniform resource locator identifies at least one of:

an email address, phone number, file transfer protocol server, and hypertext transfer protocol server.

15. The method of claim 8, wherein the key source information an digital cinema package are provided to a first server, the method further comprising the steps of:

selecting a composition playlist of the digital cinema package, the composition playlist identifying at least one asset track file in the digital cinema package;

transferring the selected composition playlist and the at least one asset track file from the first server to a second server; and

,

transferring the key source information from the first server to the second server for use in retrieving the decryption key for decrypting content corresponding to the composition play list.

16. The method of claim 15, wherein the composition play list comprises the key source information.