Sensor Node Authentication Ticket System for Mobile Sink Networks
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Solution Overview
Problem
Existing sensor network authentication methods are inefficient for dynamic environments, particularly when mobile sensor nodes need to reconnect to different sink nodes, leading to increased overhead and resource usage due to the lack of consideration for reauthentication and node mobility.
Innovation Solution
The proposed method uses an authentication ticket system where a sensor node receives an authentication ticket from a sink node, which is validated using a group key, allowing for efficient reauthentication when the node moves to a new sink node, reducing the need for repeated authentication processes and resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional authentication methods are used for mobile sensor nodes, then security authentication can be performed, but reauthentication overhead and resource usage increase significantly when nodes move between sink nodes
Solution Approach 1:
The patent applies preliminary action by pre-generating authentication tickets at the original sink node before the sensor node moves. These tickets contain pre-computed authentication information that can be quickly validated by new sink nodes, eliminating the need for time-consuming reauthentication processes when nodes move between sink nodes.
Solution Approach 2:
The patent introduces authentication tickets as an intermediary element between sink nodes. These tickets serve as portable authentication credentials that sensor nodes carry when moving, allowing new sink nodes to verify authenticity without performing complete authentication protocols, thus reducing reauthentication overhead.
2Reliability
If complete authentication protocols are performed at each sink node, then authentication security is maintained, but energy consumption and computational resources increase
Solution Approach 1:
The patent applies partial action by implementing selective authentication verification. Instead of performing complete authentication protocols at each sink node, the system uses authentication tickets that contain sufficient verification information for quick validation. This partial verification approach maintains security while significantly reducing computational overhead and energy consumption at new sink nodes.
3Ease of operation
If authentication information is dispersed among all sink nodes, then authentication can be performed, but communication overhead and network complexity increase
Solution Approach 1:
The patent extracts authentication information from the distributed sink node structure and consolidates it into portable authentication tickets. Instead of requiring all sink nodes to have access to dispersed authentication information, the sensor node carries the necessary authentication credentials in tickets, simplifying the network structure while maintaining authentication capability.
Data Source
AI summary
A method and apparatus for authenticating a sensor node in a sensor network. The method for authenticating a sensor node by a first sink node in a sensor network includes receiving an authentication request using an authentication ticket from the sensor node, identifying a second sink node which has issued the authentication ticket, decoding the authentication ticket using a group key, which is previously stored in correspondence to the second sink node to confirm the validity of the authentication ticket, when the second sink node is included in a neighboring node list, normally processing authentication for the sensor node, generating an authentication ticket using a group key of the first sink node, and transmitting the generated authentication ticket to the sensor node.