Rights Object Move Rights Upgrade via DRM Agent
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Solution Overview
Problem
Digital Rights Management (DRM) systems face limitations in moving Rights Objects (ROs) without Move rights, as users often fail to consider future needs during purchase, leading to restricted application and potential inability to move ROs.
Innovation Solution
A method and device for processing ROs, involving a DRM Agent and SRM Agent to acquire and update RO-related information, generate new ROs with Move rights, and transfer them between devices, enabling ROs without Move rights to be moved and extended in application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the RO is stored on the SRM without Move rights, then the RO can be securely stored and consumed on multiple devices, but the RO cannot be moved out from the SRM when needed
Solution Approach 1:
The patent introduces a dynamic rights management system where the Move rights parameter of an RO can be changed from false to true through interaction with the RI. This allows the RO to transition from a non-movable state to a movable state when the user has a legitimate need, resolving the contradiction between secure storage and adaptability.
Solution Approach 2:
The core solution involves changing the Move rights parameter of the RO. When a user needs to move an RO, the system interacts with the RI to update this parameter from false to true, enabling the RO to be moved while maintaining security through controlled parameter modification.
2Ease of manufacture
If the user purchases RO without considering future moving needs, then the initial purchase is simple and straightforward, but the RO cannot be moved later when the user needs to
Solution Approach 1:
The system performs preliminary actions by establishing a communication channel between the terminal, SRM, and RI during the initial RO purchase. This preliminary setup enables future parameter changes without requiring complex re-purchasing processes, maintaining both purchase simplicity and future adaptability.
Solution Approach 2:
The system provides feedback mechanisms where the terminal can query the RI about the Move rights status of an RO and request parameter changes. This feedback loop allows users to easily modify RO properties later without complicating the initial purchase process.
3Reliability
If the RO Move rights are strictly enforced, then the DRM security model is maintained, but the application scope of RO is limited
Solution Approach 1:
The RI acts as an intermediary between the terminal and the RO rights management. It mediates the parameter change requests, verifying legitimacy before allowing Move rights to be updated. This intermediary mechanism maintains DRM security while enabling expanded application scope through controlled flexibility.
Data Source
AI summary
A method for upgrading a Rights Object (RO) includes: acquiring, by a Digital Rights Management (DRM) Agent, RO related information of the RO that requires updating from a Secure Removable Media (SRM) Agent; providing, by the DRM Agent, the RO related information to a Rights Issuer (RI), and obtaining a new RO from the RI; and interacting, by the DRM Agent, with the SRM Agent to upgrade the RO that requires updating on the SRM by means of the new RO. According to the embodiments of the present invention, the DRM Agent acquires RO related information which is stored on the SRM and does not have Move rights, and interacts with the RI to move the RO out from the SRM, so as to move the RO without the Move rights out from the SRM.