Content Sharing Systems and Methods

• US 20100299522A1
• Filed: 05/20/2010
• Published: 11/25/2010
• Est. Priority Date: 05/20/2009
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Intertrust Technologies Corporation (Fidelio Acquisition Co LLC)
• Inventors: Khambete, Prasad
• Granted Patent: US 9,118,462 B2
• Time in Patent Office: Days
• US Class Current: 713/168
• CPC Class Codes: H04L 2209/603 Digital right managament [DRM]
• CPC Class Codes: H04L 63/061 for key exchange, e.g. in peer-to-peer networks cryptographic mechanisms or cryptographic arrangements for key agreement H04L9/0838
• CPC Class Codes: H04L 63/12 Applying verification of the received information cryptographic mechanisms or cryptographic arrangements for data integrity or data verification H04L9/32
• CPC Class Codes: H04L 63/166 at the transport layer
• CPC Class Codes: H04L 9/0822 using key encryption key
• CPC Class Codes: H04L 9/0825 using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates
• CPC Class Codes: H04L 9/3268 using certificate validation, registration, distribution or revocation, e.g. certificate revocation list [CRL]
• CPC Class Codes: H04L 9/3273 for mutual authentication network architectures or network communication protocols for achieving mutual authentication in a packet data network H04L63/0869
• CPC Class Codes: H04N 21/2541 Rights Management protecting software against unauthorised usage in a vending or licensing environment G06F21/10; 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 21/2747 Remote storage of video programs received via the downstream path, e.g. from the server
• 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 21/4788 communicating with other users, e.g. chatting arrangements for providing for computer conferences, e.g. chat rooms, to substation in data switching networks H04L12/1813; distributed application using peer-to-peer [P2P] networks H04L67/104
• CPC Class Codes: H04N 21/8355 involving usage data, e.g. number of copies or viewings allowed

Abstract

Systems and methods are described for peer-to-peer sharing of electronic content. In one embodiment, if a license associated with a content item permits a sharing peer to share the content item with a receiving peer, the sharing peer rebinds a cryptographic key associated with the content item to the receiving peer and generates a sharing license for the content item. The sharing peer sends the sharing license and the content item to the receiving peer for consumption.

Claims

1. A method for performing peer-to-peer sharing of electronic content, the method performed by a first peer, the comprising:

authenticating a second peer;

obtaining capability information from the second peer;

sending a list of shareable content to the second peer;

receiving a selection of a content item from the list from the second peer;

rebinding a cryptographic key associated with the content item to the second peer;

generating a sharing license for the content item;

associating the sharing license with the content item; and

sending the content item and the sharing license to the second peer.

2. The method of claim 1, in which the capability information includes information regarding whether the second peer includes secure storage.

3. The method of claim 1, in which the capability information includes information regarding whether the second peer supports trusted time.

4. The method of claim 1, further comprising:

obtaining approval, from a user of the first peer, to send the content item to the second peer.

5. The method of claim 1, in which generating the sharing license for the content item includes evaluating an original license associated with the content item to determine if sharing is permitted.

6. The method of claim 1, in which authenticating the second peer includes determining whether a cryptographic certificate associated with the second peer has been revoked.

7. The method of claim 1, in which the sharing license permits use of the content item for a limited period of time, in accordance with an original license associated with the content item.

8. The method of claim 1, in which the sharing license permits use of the content item only if a certain node is reachable from the second peer.