Method and system for activation of local content with legacy streaming systems

• US 8,504,834 B2
• Filed: 12/30/2011
• Issued: 08/06/2013
• Est. Priority Date: 12/30/2011
• Status: Active Grant

• Current Assignee: SanDisk Technologies LLC (Western Digital Corporation)
• Original Assignee: Sandisk Technologies Incorporated (Western Digital Corporation)
• Inventors: Jogand-Coulomb, Fabrice E.
• Primary Examiner(s): Zand, Kambiz
• Assistant Examiner(s): Getachew, Abiy
• Application Number:
  US13/341,590
• Publication Number:
  US 20130173919A1
• Time in Patent Office: 585 Days
• Field of Search: 713/168
• US Class Current: 713/168
• CPC Class Codes: H04L 63/062 for key distribution, e.g. centrally by trusted party cryptographic mechanisms or cryptographic arrangements for key distribution involving a central third party H04L9/0819
• CPC Class Codes: H04N 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/4184 providing storage capabilities, e.g. memory stick
• CPC Class Codes: H04N 21/4405 involving video stream decryption
• CPC Class Codes: H04N 21/4623 Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message] arrangements for conditional access to broadcast information or to broadcast-related services H04H60/14

Abstract

A method and system for activation of local content with legacy streaming systems are disclosed. In one embodiment, a storage device stores encrypted content. The encrypted content can be preloaded or downloaded into the storage device. To consume the content, a host device using the storage device receives a stream of data from a network. The host device then derives a key from the received stream of data and decrypts the encrypted content using the key derived from the received stream of data. Other embodiments are possible, and each of the embodiments can be used alone or together in combination.

Claims

1. A host device comprising:

a network interface through which the host device can connect to and communicate with a network;

a storage device interface through which the host device can connect to and communicate with a storage device, wherein the storage device stores encrypted content; and

a controller in communication with the network interface and the storage device interface, wherein the controller is configured to;

receive a stream of data from the network;

derive a key from the received stream of data; and

decrypt the encrypted content using the key derived from the received stream of data.

2. The host device of claim 1, wherein the encrypted content is encrypted with a content encryption key, and wherein the key derived from the received stream of data is the content encryption key.

3. The host device of claim 1, wherein the encrypted content is encrypted with a content encryption key stored on the host device or the storage device in an encrypted form, and wherein the key derived from the received stream of data is used to decrypt the content encryption key stored on the host device or the storage device.

4. The host device of claim 1, wherein the controller is further configured to discard the key derived from the received stream of data after the encrypted data has been encrypted.

5. The host device of claim 1, wherein the controller is further configured to store the key derived from the received stream of data in an account in the storage device.

6. The host device of claim 5, wherein the account stores permissions of users to use the stored key to decrypt the encrypted content.

7. The host device of claim 1, wherein the encrypted content is pre-loaded on to the storage device.

8. The host device of claim 1, wherein the encrypted content is downloaded on to the storage device via the host device.

9. The host device of claim 1, wherein the content is downloaded on to the storage device via the host device using a secure sockets layer (SSL) connection, wherein the content is encrypted using an SSL key, wherein the SSL key is stored in the storage device, and wherein the key derived from the received stream of data is used to access the stored SSL key.

10. The host device of claim 1, wherein the stream of data is received from a network location identified by a session URL.

11. The host device of claim 1, wherein the storage device is embedded in the host device.

12. The host device of claim 1, wherein the stream of data is a file of a smaller size than the content stored in the storage device.

13. The host device of claim 1, wherein the stream of data is a lower-quality version of the content stored in the storage device.

14. A method for activation of local content, the method comprising:

performing the following in a host device in communication with a storage device storing encrypted content;

receiving a stream of data from a network;

deriving a key from the received stream of data; and

decrypting the encrypted content using the key derived from the received stream of data.

15. The method of claim 14, wherein the encrypted content is encrypted with a content encryption key, and wherein the key derived from the received stream of data is the content encryption key.

16. The method of claim 14, wherein the encrypted content is encrypted with a content encryption key stored on the host device or the storage device in an encrypted form, and wherein the key derived from the received stream of data is used to decrypt the content encryption key stored on the host device or the storage device.

17. The method of claim 14 further comprising discarding the key derived from the received stream of data after the encrypted data has been encrypted.

18. The method of claim 14 further comprising storing the key derived from the received stream of data in an account in the storage device.

19. The method of claim 18, wherein the account stores permissions to use the stored key to decrypt the encrypted content.

20. The method of claim 14, wherein the encrypted content is pre-loaded on to the storage device.

21. The method of claim 14, wherein the encrypted content is downloaded on to the storage device via the host device.

22. The method of claim 14, wherein the content is downloaded on to the storage device via the host device using a secure sockets layer (SSL) connection, wherein the content is encrypted using an SSL key, wherein the SSL key is stored in the storage device, and wherein the key derived from the received stream of data is used to access the stored SSL key.

23. The method of claim 14, wherein the stream of data is received from a network location identified by a session URL.

24. The method of claim 14, wherein the storage device is embedded in the host device.

25. The method of claim 14, wherein the stream of data is a file of a smaller size than the content stored in the storage device.

26. The method of claim 14, wherein the stream of data is a lower-quality version of the content stored in the storage device.