P2P Content Tracking via Dually Signed Receipts
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Solution Overview
Problem
Current P2P-based content transfer schemes lack reliability in tracking content distribution, as users can falsify data and content service providers cannot accurately monitor content delivery, leading to increased server burdens and resource inefficiencies.
Innovation Solution
A method involving peers exchanging buffer maps, generating and signing receipt messages, and sending them through a server to ensure data integrity, using public and private keys for verification and authentication, allowing for reliable tracking of content sending and reception information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If P2P-based content transfer scheme is used, then server burdens are reduced and content distribution efficiency is improved, but reliability of content distribution tracking deteriorates due to possible data falsification by users
Solution Approach 1:
The patent introduces a tracker server as an intermediary that collects and verifies content distribution information from peers. The tracker server receives receipt messages from receivers, verifies them against buffer maps exchanged between peers, and maintains reliable records of content distribution without requiring direct server-to-client connections for every data transfer.
Solution Approach 2:
The patent implements a feedback mechanism where receivers send receipt messages to senders after receiving content pieces. These receipt messages are then verified by the tracker server, creating a closed-loop feedback system that ensures accurate tracking of content distribution while maintaining P2P efficiency.
2Loss of energy
If users directly transfer content in P2P scheme, then network costs and server maintenance costs are reduced, but measurement precision of content sending/reception information deteriorates due to lack of verification
Solution Approach 1:
The tracker server acts as a neutral intermediary that collects receipt messages from receivers and buffer maps from senders, then verifies the accuracy of content sending/reception information by cross-checking these data structures. This maintains low server maintenance costs while achieving precise measurement through centralized verification.
Solution Approach 2:
The patent replaces direct mechanical verification between peers with a cryptographic verification system. Receipt messages are signed by receivers and verified by senders using public key infrastructure, substituting complex peer-to-peer verification mechanics with more efficient cryptographic authentication that ensures measurement precision without increasing server burden.
3Reliability
If buffer maps and receipt messages are exchanged between peers, then reliability of content distribution tracking is improved, but device complexity increases due to additional signing and verification processes
Solution Approach 1:
The tracker server serves as an intermediary that simplifies peer communication by handling the complex verification processes centrally. Peers only need to exchange buffer maps and receipt messages with each other, while the tracker server manages the cryptographic verification and coordination, reducing the complexity burden on individual peers.
Solution Approach 2:
The patent implements self-service through cryptographic signatures where each peer independently signs their own buffer maps and receipt messages using their private keys, and verification is performed automatically using public keys. This eliminates the need for complex centralized authentication mechanisms while maintaining high reliability.
Data Source
AI summary
A method of collecting peer-to-peer (P2P)-based content sending/reception information is disclosed herein. In the method of collecting P2P-based content sending/reception information, a first peer accesses a second peer, and exchanges buffer maps with the second peer. The first peer requests the second peer to send a piece of content not owned by the first peer. When the reception of the piece of the content is completed, the first peer generates a receipt message and then signs the receipt message. The first peer sends the signed receipt message to the second peer. The second peer signs the signed receipt message again. The second peer sends the dually signed receipt message to a server.