Universal File Packager for Interoperable DRM Keychest
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Solution Overview
Problem
Current digital rights management systems face challenges in ensuring interoperability across different service providers and media devices, leading to concerns about media file inoperability due to format changes or proprietary systems, which hinders consumer flexibility and content producer confidence in digital distribution models.
Innovation Solution
A universal file packager system utilizing an interoperable keychest, which generates and manages encrypted media files and keys, allowing seamless playback across various devices and service providers through a centralized key repository, minimizing disruptive changes to existing DRM paradigms and ensuring continued media accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single DRM methodology is dictated to ensure interoperability, then interoperability between different service providers and devices is improved, but device complexity and system vulnerability increase
Solution Approach 1:
The system segments DRM functionality into two independent components: a universal keychest interface layer that handles interoperability, and proprietary underlying DRM systems that maintain security. This segmentation allows multiple DRM methodologies to coexist without requiring full system integration, reducing complexity while preserving adaptability.
Solution Approach 2:
The patent introduces a keychest as an intermediary layer between content and playback devices. This keychest acts as a mediator that translates between different DRM systems, enabling interoperability without requiring direct integration between proprietary systems. The keychest absorbs the complexity of multiple DRM methodologies while presenting a unified interface to devices.
2Adaptability or versatility
If a single DRM methodology is dictated to ensure interoperability, then interoperability between different service providers and devices is improved, but security vulnerability increases due to single point of failure
Solution Approach 1:
The system divides security functionality across multiple independent DRM systems rather than relying on a single centralized DRM methodology. Each underlying DRM system maintains its own security protocols, creating distributed security that eliminates single points of failure while still achieving interoperability through the keychest interface.
Solution Approach 2:
The system changes the parameter of DRM architecture from centralized uniform methodology to distributed heterogeneous methodologies. By allowing different DRM systems with different security parameters to coexist and communicate through standardized keychest interfaces, the system achieves both interoperability and enhanced security through diversity.
Data Source
AI summary
There is provided a system and method for a universal file packager for use with an interoperable key chest. There is provided a method for distributing media contents to distributors, comprising obtaining a first key, a second key and a content, encrypting the second key using the first key to generate an encrypted second key, encrypting the content using the second key to generate an encrypted content, generating a key information file including the encrypted second key, generating a universal file including the encrypted content and a first network address for a central key repository (CKR), providing the key information file for storage in the CKR, and providing the universal file to the distributors. The universal file can then be provided to users for digital e-commerce and transferred across different distributors with the CKR negotiating key access for granting new interoperable DRM licenses.