P2P Node Certificate Enrollment via Purchase License
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Solution Overview
Problem
Peer-to-peer networks are vulnerable to Sybil attacks, where attackers compromise the network by introducing multiple nodes, leading to message dropping and forgery, and existing solutions like trusted certification are costly, inefficient, and compromise anonymity.
Innovation Solution
A system where each node in the P2P network obtains a unique certificate by purchasing a product license, using a license server and certificate authority to ensure identity uniqueness, maintaining anonymity by limiting identification information to a node identifier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If trusted certification is used to prevent Sybil attacks, then node identity verification is improved, but cost and operational efficiency deteriorate
Solution Approach 1:
The patent uses digital certificates as copies of identity verification. Instead of manual trusted certification processes, each node receives a digital certificate copy that proves its identity. This automated certificate copying mechanism replaces expensive and inefficient manual verification while maintaining security.
Solution Approach 2:
The patent replaces the mechanical manual certification process with an automated electronic system. The license server and certificate authority use electronic key pairs and digital signatures to automatically verify and certify node identities, eliminating the need for manual intervention and reducing operational costs.
2Reliability
If comprehensive node identification is implemented, then Sybil attack prevention is improved, but network anonymity deteriorates
Solution Approach 1:
The patent applies local quality by providing different levels of identification information to different parts of the system. The certificate contains only the minimum necessary information (public key and node identifier) for security verification, while keeping detailed identifying information local to the license server. This selective information distribution prevents Sybil attacks while preserving node anonymity in the P2P network.
Solution Approach 2:
The patent extracts only the essential elements needed for security verification from the complete node identity. The certificate authority extracts and includes only the public key and node identifier in the certificate, leaving out sensitive personal or organizational information. This extraction approach provides sufficient verification capability while maintaining anonymity.
3Reliability
If manual certification processes are used, then identity uniqueness is ensured, but scalability and cost-effectiveness deteriorate
Solution Approach 1:
The patent implements self-service by enabling automated certificate issuance and verification. Nodes can independently obtain certificates from the license server without manual intervention. The system uses automated key pair generation, certificate issuance, and verification processes that scale efficiently while ensuring identity uniqueness through cryptographic mechanisms.
Solution Approach 2:
The patent replaces manual certification mechanics with automated electronic processes. The license server and certificate authority use electronic key pairs, digital signatures, and automated verification algorithms to efficiently manage node identities at scale, eliminating the bottlenecks and high costs associated with manual certification processes.
Data Source
AI summary
A system may protect against Sybil attacks on a peer-to-peer (P2P) network based on each one the nodes in the P2P network being identified by a corresponding certificate. In particular, a node may receive a license key, where the license key is evidence of a purchased product license. The node may transmit a message included in the license key to a certificate authority. The node may receive a certificate from the certificate authority in response to authentication of the message. The node may be identified in the P2P network with a node identifier included in the certificate.