IPSec Layer for Stream Media Copyright Protection
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Solution Overview
Problem
Current digital copyright protection methods for stream media in mobile networks require high performance from User Equipment, leading to increased costs and complexity, particularly due to decryption processes occurring at the Application Layer.
Innovation Solution
Implementing a digital copyright protection system that uses IPSec to establish an encrypted communication channel between a stream media server and User Equipment, where authentication information for IPSec is stored in the Right Object, reducing the need for decryption at the User Equipment and lowering performance requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If decryption is performed at the Application Layer of User Equipment, then digital copyright protection is achieved, but performance requirements and additional cost of User Equipment increase
Solution Approach 1:
The patent introduces an IPSec layer as an intermediary between the application layer and network layer. This intermediary handles the decryption and authentication functions, preventing the User Equipment's application layer from needing to perform complex decryption operations. The IPSec layer acts as a mediator that protects the media stream during transmission and simplifies the client-side processing requirements.
Solution Approach 2:
The patent moves the decryption function from the application layer (software level) to the IPSec layer (network protocol level). This dimensional shift in the protocol stack allows decryption to be handled by a dedicated security subsystem rather than requiring the application layer to implement complex cryptographic operations, thereby reducing the performance and cost requirements for User Equipment.
2Reliability
If strict requirements are imposed on User Equipment for digital copyright protection, then security is improved, but additional cost of User Equipment increases
Solution Approach 1:
The IPSec layer serves as an intermediary that centralizes the security functions (encryption, decryption, authentication) at the network protocol level. This allows standard User Equipment to achieve secure media stream protection without requiring expensive custom hardware or high-performance processors in the application layer, as the security processing is handled by the IPSec subsystem.
Solution Approach 2:
The IPSec protocol provides universal security services that can be applied to multiple types of media streams and applications. By implementing security at this fundamental protocol level, the same mechanism protects various media types without requiring application-specific security implementations, thereby reducing overall system cost while maintaining high security standards.
3Reliability
If media stream is encrypted with decryption key in Right Object, then copyright protection is achieved, but User Equipment performance requirements increase
Solution Approach 1:
The patent segments the security processing into distinct components: the Right Object contains the decryption key and copyright information, while the IPSec layer handles the actual decryption operations. This segmentation allows the User Equipment to retrieve only the necessary key information from the Right Object without needing to implement the entire decryption logic, thereby reducing performance requirements while maintaining copyright protection.
Solution Approach 2:
The IPSec layer acts as an intermediary that manages the decryption process using keys from the Right Object. This intermediary handles the computationally intensive decryption operations, preventing the application layer from bearing the full performance burden. The mediation allows efficient key management and decryption without requiring high-performance User Equipment.
Data Source
AI summary
A method for digital copyright protection includes stream media server negotiation with a copyright center to generate copyright object RO, RO carrying copyright service regulations and establishing encrypted communication channel information; subscriber equipment receiving RO, through the establishing encrypted communication channel information carried by RO to establish encrypted communication channel with stream media server; and stream media server transmitting media stream to subscriber equipment. The present disclosure also discloses a DRM system, subscriber equipment and multi-media server.