Method and apparatus for roaming digital rights management content in device

Abstract

A method of enabling roaming of a rights object in a digital rights management (DRM) system is provided. The method includes issuing disposable authentication information to a mobile device, receiving a request for a remote authentication as well as the authentication information from an unauthorized device, transmitting a query required for the remote authentication to the unauthorized device, receiving a response to the query from the unauthorized device, and transmitting data that approves of the authentication of the unauthorized device to the unauthorized device.

1 . A method of enabling roaming of a rights object in a digital rights management (DRM) system, the method comprising:
 issuing disposable authentication information to a mobile device;   receiving a request for a remote authentication as well as the authentication information from an unauthorized device;   transmitting a query required for the remote authentication to the unauthorized device;   receiving a response to the query from the unauthorized device; and   transmitting data that approves of the authentication of the unauthorized device to the unauthorized device.   
   
   
       2 . The method of  claim 1 , further comprising storing an identifier of the mobile device. 
   
   
       3 . The method of  claim 2 , further comprising checking if the identifier included in the request for the remote authentication matches the mobile device identifier after the receiving of the request for the remote authentication. 
   
   
       4 . The method of  claim 1 , further comprising checking if the unauthorized device is included in a certification revocation list after the receiving of the request for the remote authentication. 
   
   
       5 . The method of  claim 1 , wherein the mobile device stores the disposable authentication information. 
   
   
       6 . The method of  claim 1 , wherein the data that approves of the authentication of the unauthorized device is encoded in a key included in the disposable authentication information. 
   
   
       7 . A method of enabling roaming of a rights object in a digital rights management (DRM) system, the method comprising:
 receiving disposable authentication information from a representative device;   requesting remote authentication for an unauthorized device using the disposable authentication information;   receiving the result of the remote authentication from the unauthorized device; and   transmitting a disposable rights object to the unauthorized device.   
   
   
       8 . The method of  claim 7 , further comprising:
 receiving a remote authentication query from the unauthorized device; and   transmitting a response to the remote authentication to the unauthorized device after the requesting of the remote authentication.   
   
   
       9 . The method of  claim 7 , wherein the remote authentication query or the remote authentication result is encoded in a key included in the disposable authentication information. 
   
   
       10 . The method of  claim 7 , further comprising transmitting a mobile device identifier to the representative device before the receiving of the disposable authentication information. 
   
   
       11 . The method of  claim 7 , wherein the device is portable, and stores the disposable authentication information. 
   
   
       12 . A method of enabling roaming of a rights object in a digital rights management (DRM) system, the method comprising:
 receiving a remote authentication request message from a mobile device;   requesting the message for remote authentication of a representative device;   receiving a query required for the remote authentication from the representative device;   transmitting a response to the query to the representative device; and   receiving data that approves of the authentication from the representative device.   
   
   
       13 . The method of  claim 12 , further comprising:
 transmitting the query to the mobile device; and   receiving a response to the query from the mobile device after the receiving of the query.   
   
   
       14 . The method of  claim 12 , further comprising:
 transmitting data that approves of the authentication to the mobile device; and   receiving a disposable rights object from the mobile device after the approving of the authentication.   
   
   
       15 . A device comprising:
 a rights object storage unit that stores a rights object;   an authentication unit that issues disposable authentication information to a mobile device;   a receiver that receives a request for remote authentication as well as the disposable authentication information from an unauthorized device; and   a transmitter that transmits a query required for the remote authentication to the unauthorized device, wherein the receiver receives a response to the query from the unauthorized device and the transmitter transmits data that approves of the authentication of the unauthorized device to the unauthorized device.   
   
   
       16 . The device of  claim 15 , wherein the authentication unit stores and deletes the disposable authentication information, and includes a key that encodes the query.