Electronic Key Registration via Management Center Intermediary
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Solution Overview
Problem
The existing electronic key systems lack adequate security measures to prevent unauthorized registration of electronic keys to vehicle controllers, necessitating a robust method to ensure secure registration and verification.
Innovation Solution
A method and system that utilize a unique electronic key ID and encryption code for secure registration, where the electronic key ID and encryption code are stored in the controller, and associated with a unique communication subject ID and controller ID, employing challenge-response verification and Advanced Encryption Standard (AES) for encrypted communication, with factory, online, and offline registration processes to accommodate various scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electronic key ID and encryption code are stored in the controller for registration, then registration functionality is enabled, but security vulnerability to unauthorized registration increases
Solution Approach 1:
A management center is introduced as an intermediary between the electronic key and the controller. The management center stores the binding relationship between communication subject ID, controller ID, and electronic key ID in a database, and verifies this binding during registration. This intermediary mechanism enables registration functionality while preventing unauthorized registration by requiring management center verification.
Solution Approach 2:
The system transitions from a direct two-party registration (key-controller) to a three-party system (key-controller-management center). By adding the management center dimension, the system enables registration functionality while introducing a verification layer that prevents unauthorized registration attempts.
2Reliability
If challenge-response verification with AES encryption is implemented, then security is enhanced, but communication complexity increases
Solution Approach 1:
The management center serves multiple functions: storing binding relationships in the database, generating challenge codes, verifying responses using AES encryption, and managing registration approvals. By consolidating these functions in a centralized system rather than distributing complexity to the controller and key, the solution enhances security while managing communication complexity centrally.
3Adaptability or versatility
If multiple registration methods (factory, online, offline) are provided, then system adaptability is improved, but process complexity increases
Solution Approach 1:
The registration process is segmented into three distinct methods (factory registration, online registration, offline registration), each with specific procedures and verification mechanisms. This segmentation allows the system to adapt to different operational scenarios while maintaining clear, separate process flows that manage complexity through structured division rather than a single complex unified process.
Data Source
Figure 1
Figure 2A~2C
Figure 3
AI summary
A method for registering an electronic key (2a) includes storing an electronic key ID (ID-1) and an encryption code (K-1) in a vehicle controller (4) to register the electronic key (2a) to the controller (4), and associating the vehicle ID (α) with the controller ID (ID-A) and with the electronic key ID (ID-1) in a management center database (24-27).