Self-Organized Network Access Using Trust Chains
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Solution Overview
Problem
Existing wireless network access systems face challenges in balancing secure access for trusted users with open access to all, while preventing malicious users from exploiting bandwidth and accessing private data, especially in community-wide networks, without requiring a separate authentication server.
Innovation Solution
A self-organized network access system that uses instant messaging buddy lists to determine trust relationships, allowing access based on pre-established trust groups, with optional broadcast of instant messaging addresses and investigation of chain of trust relationships to grant access levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless network access is opened to all users within range, then network accessibility and convenience are improved, but security risks and bandwidth abuse by malicious users increase
Solution Approach 1:
The patent introduces an intermediary authentication mechanism using existing instant messaging buddy lists as a trust verification system. The access point owner's buddy list serves as an intermediary database to determine whether requesting users are trusted, eliminating the need for direct key distribution while maintaining security. This intermediary trust verification system allows open access for trusted users while blocking untrusted users without requiring a separate authentication server.
2Object-affected harmful factors
If wireless network access is restricted to trusted users only, then security is improved, but network accessibility and convenience for transient users deteriorate
Solution Approach 1:
The patent makes the existing instant messaging buddy list system serve multiple functions: it continues to manage trusted contacts for private communications while simultaneously serving as an authentication mechanism for wireless network access. This multi-functional use of the buddy list eliminates the need for separate authentication infrastructure, making security verification convenient for both permanent and transient users without requiring new key distribution processes.
3Object-affected harmful factors
If authentication keys are distributed to users for security, then access control is improved, but convenience and security against key distribution chains deteriorate
Solution Approach 1:
The patent extracts the authentication verification function from the traditional key distribution model and relocates it to the existing buddy list infrastructure. Instead of distributing cryptographic keys that users must manually input and protect, the system extracts trust verification to the access point owner's buddy list, which automatically verifies user identity without requiring key distribution. This eliminates the security risks and inconvenience associated with key management while maintaining access control.
Data Source
AI summary
A second user requests access to a wireless access point, such as a WiFi connection, provided by a first user. To determine whether the first user should be provided with access, the second user identifies a chain of trust relationships between the first and second users. The chain of trust relationships is established by determining if, for example, the first user is in an instant messaging buddy list of the second user, or if there is an intermediate user who both trusts the first user and is trusted by the second user. If a chain of trust relationships between the first and second users exists and is not too attenuated, the second user provides the first user with network access.