Portable Storage Device DRM Authentication
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Solution Overview
Problem
Conventional secure memory cards, such as SD cards and CP secure MMCs, are not compatible with mobile DRM services, making them unable to operate within a mobile digital rights management environment, which hinders their ability to be directly linked to a license provider and manage digital rights effectively.
Innovation Solution
A method and apparatus that enable a portable storage device to perform primary and secondary authentication with a license provider, establishing security associations to receive and transmit licenses, allowing secure MMCs to operate within a mobile DRM environment by using a mobile device as a communication proxy and employing symmetric key algorithms for encoding and decoding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional secure memory cards (SD cards, CP secure MMCs) are used, then content storage capability is provided, but compatibility with mobile DRM services is lost and direct link to license provider is impossible
Solution Approach 1:
The portable storage device is designed to perform multiple functions: it serves as both a content storage medium and a DRM-capable device that can directly communicate with license providers. The device includes both storage functionality and DRM processing functionality, allowing it to operate in mobile DRM services while maintaining content storage capabilities.
Solution Approach 2:
The portable storage device acts as an intermediary between the license provider and the content. It establishes direct security association with the license provider and can independently manage digital rights, eliminating the need for conventional memory cards to rely on terminal devices for DRM operations.
2Reliability
If conventional secure memory cards are used, then content storage is enabled, but direct authentication with license provider and license management capability is lost
Solution Approach 1:
The portable storage device performs self-authentication with the license provider through primary authentication and establishes security association independently. It can autonomously manage licenses and digital rights without requiring external assistance from terminal devices, thereby improving reliability while maintaining ease of operation.
3Productivity
If portable storage device performs primary authentication with license provider, then direct license acquisition is enabled, but security association establishment complexity increases
Solution Approach 1:
The portable storage device performs primary authentication with the license provider in advance to establish security association before actual content access. This preliminary action enables direct license acquisition and improves productivity, while the authentication process is designed to be automated to minimize operational complexity.
Data Source
AI summary
A method and apparatus for managing digital rights using a portable storage device are provided. The method includes a device performing primary authentication together with a license provider and establishing primary security association, the device performing secondary authentication together with the portable storage device and establishing secondary security association, receiving a license from the license provider, and transmitting the license to the portable storage device.