Home Network Secure Channel Reduction via Key Distribution Center
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Solution Overview
Problem
Existing methods for interconnecting multiple home networks require excessive secure channels and information management, leading to inefficiencies in resource sharing between networks.
Innovation Solution
Establishing secure channels between a first and second home network, and a second and third home network, where the second home network obtains device information and access policies from the first home network and forwards them to the third home network according to access policies, reducing the number of secure channels and information required to be saved and maintained.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If secure channels are established between every two home networks for resource sharing, then resource sharing capability is improved, but the number of secure channels and information management complexity increase excessively
Solution Approach 1:
The patent introduces a key distribution center (KDC) as an intermediary entity that manages secure channel establishment between home networks. Instead of requiring direct secure channels between every pair of home networks, the KDC acts as a mediator that generates and distributes session keys, reducing the overall number of secure channels needed while maintaining full resource sharing capability among all home networks.
2Adaptability or versatility
If secure channels are established between every two home networks, then resource sharing is enabled, but the amount of information to be saved and maintained becomes too large
Solution Approach 1:
The key distribution center serves as a centralized information repository that stores master keys and generates session keys on demand. This eliminates the need for each home network to maintain copies of all other home networks' cryptographic information, significantly reducing the total amount of information that must be saved and maintained across the distributed system.
Solution Approach 2:
The patent combines the key management functions of multiple home networks into a single centralized key distribution center. By merging the key storage and management responsibilities into one entity, the system reduces redundant information storage while enabling all home networks to access the resources they need through the centralized key management infrastructure.
Data Source
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AI summary
In the field of communications technologies, a home network, a method for sharing device information among home networks and a home network system are provided. The home network system includes a first home network, and a second home network having a first secure channel established with the first home network, so as to obtain an access policy and device information of the first home network through the first secure channel and provide the device information for a third home network having a second secure channel established with the second home network according to the access policy. Therefore, the device information is shared among the home networks, and the number of the secure channels to be established is reduced, and thereby the amount of information required to be stored and maintained is reduced.