NFC Vehicle Key Authentication for Secure Keyless Car Control
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Solution Overview
Problem
Conventional vehicle keys, such as mechanical and integrated remote keys, are inconvenient to carry and have unsatisfactory anti-theft performance, with limited functionality and size issues.
Innovation Solution
A vehicle control method and device utilizing an NFC vehicle key, which includes an NFC Reader and an internal NFC security module, allowing for secure vehicle control through a multi-step verification process using an NFC vehicle key as a user terminal, establishing an NFC channel, performing verifications, and controlling vehicle functions like locking, unlocking, and starting the engine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical keys are used, then the vehicle door can be locked and unlocked, but the convenience of carrying and anti-theft performance deteriorates
Solution Approach 1:
The patent replaces the traditional mechanical key system with an NFC-based electronic authentication system. The NFC vehicle key uses near field communication technology to establish a wireless connection with the vehicle's NFC reader, eliminating the need for physical mechanical keys while providing both convenient portability (the key can be a smartphone or thin card) and enhanced security through multi-step verification processes including white list matching and Token validation.
2Reliability
If integrated remote keys are used, then anti-theft performance is improved, but the device size and portability deteriorate
Solution Approach 1:
The NFC vehicle key is designed to be a universal device that can serve multiple functions: it can be used as a vehicle key for authentication, as a smartphone for communication, or as a thin card for access control. By integrating the authentication functionality into an existing universal device (smartphone or card) rather than requiring a dedicated remote key fob, the patent eliminates the need for separate remote key devices while maintaining anti-theft performance through the NFC-based verification system.
3Reliability
If multiple verification steps are implemented, then anti-theft performance is improved, but the operation complexity increases
Solution Approach 1:
The NFC vehicle key system performs multiple verification steps automatically without requiring user intervention. When the user brings the NFC key near the vehicle, the system automatically initiates the authentication process, including white list matching of the associated key, validation of the Token message, and generation of temporary service secret keys. The user simply needs to present the key, and the system handles all complex verification steps autonomously, maintaining high security while preserving ease of operation.
4Ease of operation
If NFC-based authentication is used, then convenience is improved, but the system complexity increases
Solution Approach 1:
The NFC vehicle key system is divided into distinct functional modules: the NFC reader module in the vehicle, the authentication control module, the white list storage module, the Token validation module, and the key generation module. This segmentation allows each component to perform its specific function independently, making the overall complex system manageable through modular design. The user experiences simplicity by only needing to bring the key near the vehicle, while the segmented backend handles the complexity of multi-step verification and key management.
Data Source
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Figure 3
AI summary
The present disclosure provides a vehicle control method and device based on an NFC vehicle key, a vehicle, and a storage medium. The method includes: when a key selection instruction sent by an NFC Reader is received, determining a target NFC vehicle key according to the selection instruction and entering an NFC recognition mode; receiving, by an internal NFC security module, an associated key sent by a user terminal; if the associated key is in a preset white list, determining that a first verification succeeds, and if a Token message corresponding to the associated key is valid, determining that a second verification succeeds; when the first verification and the second verification succeed, generating, by calculation, a secret key of the NFC vehicle key service using the associated key; performing a third verification on the user terminal according to the secret key of the NFC vehicle key service; and when third verification succeeds, correspondingly controlling a vehicle. By applying the embodiments of the present disclosure, users may control the vehicle based on the NFC vehicle key without performing a selection operation, and user experience is improved.