Method and device for sharing of content protected by digital rights management

• US 7,690,042 B2
• Filed: 12/08/2003
• Issued: 03/30/2010
• Est. Priority Date: 12/08/2003
• Status: Expired due to Fees

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Rantalahti, Antti
• Primary Examiner(s): Chen; Shin-Hon
• Application Number:
  US10/580,893
• Publication Number:
  US 20070283420A1
• Time in Patent Office: 2,304 Days
• Field of Search: 726/27, 726/36, 709/216, 709/220, 709/248, 707/8, 707/204
• US Class Current: 726/27
• CPC Class Codes: G06F 21/1013 to locations
• CPC Class Codes: G06F 21/1077 Recurrent authorisation
• CPC Class Codes: G06F 21/1086 Superdistribution
• CPC Class Codes: G06F 2221/2111 Location-sensitive, e.g. geographical location, GPS
• CPC Class Codes: H04L 2463/101 applying security measures for digital rights management data processing systems or methods, specially adapted for commerce, e.g. marketing, shopping, billing, auctions or e-commerce G06Q30/00
• CPC Class Codes: H04L 63/10 for controlling access to devices or network resources
• CPC Class Codes: H04W 12/08 Access security

Abstract

The present invention provides methods and devices allowing a secure way of sharing DRM-protected content. A content holder may share the content under certain restrictions. These restrictions include range-based, time-based or usage-based limitations. The invention offers a secure sharing method preventing copyright violations and preserving the copyright owners control over the content use, while also offering new marketing possibilities to him.

Claims

1. Method for sharing content protected by digital rights management (DRM) between a first mobile electronic terminal device and a second mobile electronic terminal device, wherein said first mobile electronic terminal device is authorized for accessing said content, comprising:

receiving a request for sharing said content from said second mobile electronic terminal device;

answering said request by sending

a confirmation to said second mobile electronic terminal device about authorization of said first mobile electronic terminal device to access said content;

a data signal based on said authorization to said second mobile electronic terminal device and indicative of at least one condition said second mobile electronic terminal device has to meet in order to be authorized for accessing said content;

wherein a key for accessing said content is provided in said first mobile electronic terminal device, further comprising;

receiving a clock synchronization signal from said second mobile electronic terminal device;

generating a plurality of keys k_i derived from said key, wherein said keys k_i are suitable to partially access said content; and

sending said keys k_i to said second mobile electronic terminal device in accordance with said clock synchronization signal.

2. Method according to claim 1, wherein said content is provided in said first mobile electronic terminal device, further comprising:

sending said content to said second mobile electronic terminal device.

3. Computer readable storage medium comprising program code stored thereon for carrying out the method of claim 1 when said program code is run on a computer or network device.

4. Method for sharing content protected by digital rights management DRM between a first mobile electronic terminal device and a second mobile electronic terminal device, wherein said first mobile electronic terminal device is authorized for accessing said content, comprising:

sending a request for sharing of said content to said first mobile electronic terminal device;

receiving from said first mobile electronic terminal device in response to said request

a confirmation about authorization of said first mobile electronic terminal device to access said content;

a data signal indicative of at least one condition said second mobile electronic terminal device has to meet in order to be authorized to access said content; and

authorizing access to said content based on said confirmation and said condition being repeatedly met and denying authorization of access to said content

if said condition is not met for a predetermined time;

or

if not meeting said condition has occurred a predetermined number of times.

5. Method according to claim 4, further comprising:

receiving said content from said first mobile electronic terminal device.

6. Method according to claim 4, wherein said confirmation comprises a key for accessing said content.

7. Method according to claim 4, wherein said request comprises a user identification of said second mobile electronic terminal device.

8. Method according to claim 4, wherein said at least one condition is said second mobile electronic terminal device having a network connection with said first mobile electronic terminal device.

9. Method according to claim 8, wherein said network connection is a wireless connection.

10. Method according to claim 4, wherein said at least one condition is said second mobile electronic terminal device not exceeding a predetermined number of accesses to said content.

11. Method according to claim 4, wherein said at least one condition is said second mobile electronic terminal device not exceeding a predetermined time of access to said content.

12. Method for sharing content protected by digital rights management (DRM) between a first mobile electronic terminal device and a second mobile electronic terminal device, wherein said first mobile electronic terminal device is authorized for accessing said content, and said mobile electronic terminal devices are part of a location based service network, comprising:

receiving a request for sharing of said content from said second mobile electronic terminal device, said request containing an identification of said second mobile electronic terminal device, and an identification of said first mobile electronic terminal device;

comparing the location of said first mobile electronic terminal device and the location of said second mobile electronic terminal device in said network based on said identifications; and

sending an authorization to access said content to said second mobile electronic terminal device if said locations of said two mobile electronic terminals are in a predetermined area.

13. Method according to claim 12, wherein said authorization comprises a key to access said content.

14. Method according to claim 12, further comprising:

performing cyclic repeats of said comparing of said locations of said two mobile electronic terminals; and

denying authorization to access said content if said locations of said two mobile electronic terminals are not in a predetermined area.

15. Mobile electronic terminal device for sharing content protected by digital rights management (DRM) with a second mobile electronic terminal device, wherein said mobile electronic terminal device may be authorized for accessing said content, comprising:

a component adapted for transceiving data; and

a component for generating a data signal;

wherein said data signal generating component is adapted to generate a data signal indicative of at least one condition said second mobile electronic terminal device has to meet to be authorized for access to said content and being based on said authorization of said mobile electronic terminal device to access said content, and said transceiving component is adapted to send said data signal to said second mobile electronic terminal device;

wherein a key for accessing said content is provided in said mobile electronic terminal device;

said mobile electronic terminal device further comprising a component adapted to generate a plurality of keys k_i derived from said key, wherein each of said keys k_i is suitable to partially access said content;

wherein said transceiving component is adapted to receive a clock synchronization signal from said second mobile electronic terminal device and send said keys k_i to said second mobile electronic terminal device in accordance with said clock synchronization signal.

16. Device according to claim 15, further comprising a component adapted to send said content to said second mobile electronic terminal device.

17. Device according to claim 15, wherein said transceiving component comprises a local area network transceiver.

18. Device according to claim 15, wherein said transceiving component comprises a wide area network transceiver.

19. Mobile electronic terminal device for sharing content protected by digital rights management (DRM) from a first mobile electronic terminal device, wherein said first mobile electronic terminal device may be authorized for accessing said content, comprising:

a component adapted for transceiving data;

an authorization component; and

a component adapted to send a clock synchronization signal;

wherein said transceiving component is adapted to receive a data signal indicative of a condition, and said authorization component is adapted to authorize access to said content based on said condition being met; and

wherein said transceiving component is further adapted to receive keys k_i in accordance to said clock synchronization signal and said authorization component is further adapted to authorize access to said content based on said keys k_i.

20. Device according to claim 19, further comprising a component adapted to receive said content.