Server Key Notification Periodic Update Reduces Traffic
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Solution Overview
Problem
In wireless mesh networks and similar environments where nodes frequently join or leave, the current key distribution mechanisms lead to increased network traffic due to frequent key notifications, causing traffic congestion and load imbalances on the server.
Innovation Solution
A server system that includes a message communicator, key information storage, and a key controller to manage key notifications by generating key notification messages with a specified update time based on key validity and client authentication status, thereby reducing the frequency of key updates and smoothing the server load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the server notifies new keys every time a node joins or leaves the group, then the key distribution remains secure and up-to-date, but the network traffic increases significantly due to frequent key notifications
Solution Approach 1:
The patent implements periodic key notification based on time intervals rather than event-driven notifications. The server determines whether to notify clients about key updates by comparing the current time with the last notification time and checking if a predetermined time interval has elapsed. This periodic approach reduces notification frequency while maintaining security, directly resolving the contradiction between reliable key distribution and excessive network traffic.
2Reliability
If the server notifies new keys every time a node joins or leaves the group, then the key distribution remains secure and up-to-date, but the server load increases due to frequent key update processes
Solution Approach 1:
The server uses periodic time-based notification intervals to control key update frequency. By checking whether the current time exceeds the last notification time by a predetermined interval, the server reduces the number of key notification operations, thereby lowering processing load and improving productivity while maintaining adequate security through regular updates.
3Reliability
If key updates occur frequently to maintain security, then the key distribution remains secure, but the network traffic increases causing congestion
Solution Approach 1:
The patent applies periodic time-based notification intervals to control key update frequency. The server determines whether to notify clients by comparing current time with the last notification time and checking if a predetermined interval has elapsed. This approach reduces notification frequency, thereby minimizing network traffic and preventing congestion while maintaining adequate security through regular periodic updates.
Data Source
AI summary
According to one embodiment, a server includes a message communicator, a key information storage, and a key controller. The message communicator is configured to communicate a message to a client. The key information storage is configured to store key information including at least a key value being value of key, a validity term of key, and assignment information of key. The key controller is configured to generate a key notification message including a key value of the client and a key update time when the message communicator receives a key request message from an authenticated client. The key value is corresponding with the assignment of the key information. The key update time decides from the validity term of the key and a validity term of authentication succeeded state of the client. The message communicator transmits the key notification message to the client.