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Method and apparatus for managing digital rights of secure removable media

  • US 8,683,610 B2
  • Filed: 08/03/2012
  • Issued: 03/25/2014
  • Est. Priority Date: 11/11/2005
  • Status: Expired due to Fees
First Claim
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1. A terminal for managing digital rights of a memory card which is inserted into the terminal and has a processor and a memory, the digital rights allowing the terminal to access digital contents, the terminal comprising:

  • a processor configured to manage a digital rights and to;

    exchange information with the memory card, wherein the information includes a terminal ID and a memory card ID;

    perform a mutual authentication procedure with the memory card;

    receive a trigger message which indicates to the terminal that a digital rights for the memory card is prepared in a specific server or device, wherein the trigger message includes parameters indicating the memory card and indicating the specific server or device;

    if a parameter included in the trigger message does not indicate the memory card, perform a procedure for obtaining a digital rights for the terminal; and

    if a parameter included in the trigger message indicates the memory card, perform a procedure for requesting a digital rights for the memory card on behalf of the memory card to the specific server or device,wherein the procedure for requesting the digital rights for the memory card includes;

    generating, on behalf of the memory card, a digital rights request message for requesting a digital rights for the memory card from the specific server or device, the digital rights request message including not the terminal ID, but the memory card ID;

    transmitting, to the memory card, a signature request for requesting a signature of the memory card including the generated digital rights request message;

    receiving, from the memory card, a signature response including a signature of the memory card;

    transmitting, to the specific server or device, the generated digital rights request message and the signature of the memory card;

    receiving, from the specific server or device, a digital rights response message which indicates the memory card ID and a protected digital rights, wherein the protected digital rights is cryptographically bound to the memory card such that the terminal without a key of the memory card is prohibited from decrypting the protected digital rights cryptographically bound to the memory card; and

    transmitting, to the memory card, the information about the protected digital rights to be installed in the memory card.

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