Virtual Vehicle Key Binding via Server-Mediated Secure Authentication
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Solution Overview
Problem
Current card-type automobile key binding methods rely on Bluetooth protocol stacks for data transmission, which can lead to security issues such as channel hijacking and interference, compromising the security of the binding process between the key and the vehicle.
Innovation Solution
A virtual key binding method and system that involves extracting a device fingerprint and generating a service key by a terminal device, sending device feature information to a service server for storage on the vehicle's on-board electronic device, and performing signing and encrypting operations to ensure secure data transmission through a service and security server.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If Bluetooth protocol stack is used for data transmission during binding, then ease of operation is improved, but security of data transmission deteriorates
Solution Approach 1:
The patent introduces a server as an intermediary component between the terminal device and on-board electronic device. The server receives binding requests, generates binding codes, and manages the binding process centrally, replacing direct peer-to-peer Bluetooth communication. This intermediary architecture maintains ease of operation while significantly improving security by centralizing authentication and eliminating direct vulnerable communication channels.
2Productivity
If direct data transmission between terminal device and on-board electronic device is performed, then productivity is improved, but security of binding process deteriorates
Solution Approach 1:
The server acts as a mediating platform that coordinates the binding process between terminal devices and on-board electronic devices. Instead of direct transmission, the server generates binding codes, manages authentication, and coordinates the binding workflow, thereby maintaining efficient binding productivity while ensuring secure centralized control over the entire process.
Solution Approach 2:
The patent replaces the direct mechanical/protocol-based Bluetooth transmission system with a server-based software system. The binding process transitions from direct device-to-device communication to a cloud-mediated process where the server manages all data exchange, substituting the vulnerable direct transmission mechanism with a more secure centralized architecture.
3Reliability
If channel hijacking protection is enhanced, then security of data transmission is improved, but device complexity increases
Solution Approach 1:
By introducing the server as an intermediary, the security functions are centralized rather than distributed across individual devices. The server handles authentication, binding code generation, and security verification, which would otherwise require complex security implementations in each terminal device and on-board electronic device. This centralization improves security while keeping individual device complexity low.
Data Source
AI summary
The present disclosure relates to the technical field of vehicle, and discloses a virtual key binding method and system, including: when an input binding instruction is detected, a terminal device extracts a device fingerprint of the terminal device and generates a service key; and generates device feature information including the device fingerprint and the service key, and sends the device feature information to a service server, so as to enable the service server to store the device feature information in an on-board electronic device of a vehicle to be bound; and when it is detected that a binding result sent by the service server is a successful binding, the terminal device stores Bluetooth information in the binding result, the Bluetooth information matching with the vehicle to be bound.