P2P Encrypted Data Transfer System for Secure Content Sharing
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Solution Overview
Problem
Current peer-to-peer (P2P) systems lack a technical mechanism for secure and legal sharing of licensed files, as existing Digital Rights Management (DRM) solutions rely on central authorities, hindering scalability and user convenience, especially in under-connected environments, and fail to address piracy issues.
Innovation Solution
A P2P encrypted data transfer system utilizing a peer-to-peer architecture with DRM capabilities, allowing secure sharing of licensed content between peers by generating and managing licenses independently, enabling offline content transfer and usage, and supporting various business models through a user rights expression model and rights negotiation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If DRM technologies use a central licensing authority mechanism, then content security and control are improved, but system scalability and user convenience deteriorate due to dependency on central servers
Solution Approach 1:
The patent segments the centralized DRM system into distributed peer nodes, where each peer can independently validate and share licensed content without requiring continuous connection to a central licensing authority. This segmentation enables the system to maintain security through cryptographic verification while achieving scalability through decentralized architecture.
Solution Approach 2:
The patent implements self-service mechanisms where licensed peers can autonomously verify content licenses and transfer protected content to other peers without requiring intervention from a central authority. Each peer maintains its own licensing credentials and can independently authenticate transfer requests, enabling offline P2P content sharing while preserving DRM protection.
2Object-affected harmful factors
If DRM protection policies are enforced, then content piracy is reduced, but user flexibility and ease of content sharing among legitimate consumers deteriorate
Solution Approach 1:
The patent introduces cryptographic license tokens as intermediaries that carry authorization information between peers. These tokens enable automatic verification of sharing rights without requiring complex policy enforcement or central authority intervention, simplifying the sharing process while maintaining piracy prevention through cryptographic security.
Solution Approach 2:
The patent changes the parameter of license validation from centralized policy checking to distributed cryptographic verification. By transforming the validation mechanism into a self-contained cryptographic proof system, the patent enables automatic peer-to-peer verification that maintains security while dramatically improving sharing convenience among licensed users.
3Measurement precision
If central licensing authorities are required for content transfer, then license validation accuracy is improved, but system response time and offline accessibility deteriorate
Solution Approach 1:
The patent implements preliminary action by having peers obtain and cache their licensing credentials before needing to share content. The cryptographic license tokens are pre-computed and stored locally, enabling immediate offline validation and transfer without requiring real-time communication with central authorities, thus eliminating delays while maintaining validation accuracy.
Data Source
AI summary
A peer to peer (P2P) system and method for sharing encrypted digital content may be used in a content delivery network system.