DRM protected content sharing
View Patent ↗A system and method for transmitting protected real-time content from one user to another is described. In a first aspect, a user sends a Rights Object to another user. In a second aspect, a user sends a Rights Object to another user via an intermediate server for a multiparty communication. In this second aspect, the users may be able to switch between designated Rights Objects as needed.
1. An apparatus comprising:
a processor; and
a memory storing computer executable instructions that, when executed, cause the apparatus to:
transmit a message to a second apparatus including a rights object and information that identifies first protected content, the rights object including a key for decrypting the first protected content;
receive an acceptance of the message from the second apparatus; and
in response to receiving the acceptance, transmit the first protected content to the second apparatus.
2. The apparatus according to claim 1 , wherein the memory further stores computer executable instructions that, when executed, cause the apparatus to:
receive the rights object from a server.
3. The apparatus according to claim 1 , wherein the memory further stores computer executable instructions that, when executed, cause the apparatus to:
create the rights object.
4. The apparatus according to claim 1 , wherein the memory further stores computer executable instructions that, when executed, cause the apparatus to: receive the protected content from a server.
5. The apparatus according to claim 1 , wherein the message is a SDPng message and the SDPng message includes the rights object in an extensible mark up language (XML) format.
6. The apparatus according to claim 1 , wherein the memory further stores computer executable instructions that, when executed, cause the apparatus to:
modify a first version of the rights object, resulting in a modified version of the rights object; and
wherein the message is a SIP message and the SIP message includes the modified version of the rights object.
7. The apparatus according to claim 1 , wherein the memory further stores computer executable instructions that, when executed, cause the apparatus to:
encapsulate a first version of the rights object, resulting in an encapsulated version of the rights object; and
wherein the message is an SIP invite and the SIP invite includes the encapsulated version of the rights object.
8. The apparatus according to claim 1 , wherein the acceptance includes a second rights object, the second rights object including a key for decrypting additional protected content received from the second apparatus.
9. The apparatus according to claim 1 , the memory further stores computer executable instructions that, when executed, cause the apparatus to:
update the rights object; and
transmit the updated rights object to the second apparatus.
10. A method comprising:
transmit, from a first device, a message to a second device including a rights object and information that identifies first protected content, the rights object including a key for decrypting the first protected content;
receive an acceptance of the message from the second device; and
in response to receiving the acceptance, transmit the first protected content to the second device.
11. The method according to claim 10 , wherein the acceptance includes a second rights object, the second rights object including a key for decrypting additional protected content received from the second device.
12. The method according to claim 10 , wherein the message is a SDPng message and the SDPng message includes the rights object in an extensible mark up language (XML) format.
13. The method according to claim 10 , further comprising:
modifying a first version of the rights object, resulting in a modified version of the rights object; and
wherein the message is a SIP message and the SIP message includes the modified version of the rights object.
14. The method according to claim 10 , further comprising:
encapsulating a first version of the rights object, resulting in an encapsulated version of the rights object; and
wherein the message is an SIP invite and the SIP invite includes the encapsulated version of the rights object.
15. The apparatus of claim 1 , wherein the memory further stores computer executable instructions that, when executed, cause the apparatus to:
receive information from a first user at the first device;
encrypt the information, resulting in second protected content;
generate a user rights object for the second protected content; and
transmit the second protected content and user rights object.
16. A memory comprising computer executable instructions that, when executed, causes an apparatus to:
transmit a message to a first device including a rights object and information that identifies first protected content, the rights object including a key for decrypting the first protected content;
receive an acceptance of the message from the first device; and
in response to receiving the acceptance, transmit the first protected content to the second device.
17. The memory according to claim 16 , wherein the computer executable instructions, when executed, further causes the apparatus to:
receive information from a first user at the apparatus;
encrypt the information, resulting in second protected content;
generate a user rights object for the second protected content; and
transmit the second protected content and user rights object.
18. The memory according to claim 16 , wherein the message is a SDPng message and the SDPng message includes the rights object in an extensible mark up language (XML) format.
19. The memory according to claim 16 , wherein the computer executable instructions, when executed, further causes the apparatus to:
modify a first version of the rights object, resulting in a modified version of the rights object; and
wherein the message is a SIP message and the SIP message includes the modified version of the rights object.
20. The memory according to claim 16 , wherein the acceptance includes a second rights object, the second rights object including a key for decrypting additional protected content received from the second user device.
21. The memory according to claim 16 , wherein the computer executable instructions, when executed, further causes the apparatus to:
update the rights object; and
transmit the updated rights object to the second user device.
22. The memory according to claim 16 , wherein the computer executable instructions, when executed, further causes the apparatus to:
create the rights object.