Wireless Vehicle Access Security via Multi-Part Authorization
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Solution Overview
Problem
Existing methods for wireless vehicle access are cumbersome and lack adequate security measures, particularly when using general-purpose communication devices like mobile phones, as they risk unauthorized access and key duplication.
Innovation Solution
A method that establishes a connection between a vehicle's ID transmitter and a wireless communication device, using encrypted identifiers and a service provider to generate a multi-part authorization message, ensuring secure access by verifying the device and transmitter identities through a public communication network and distributed key encryption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If encrypted identifiers and multi-part authorization messages are used, then security is improved, but device complexity increases
Solution Approach 1:
The authorization message is divided into multiple parts and distributed across different communication channels. The first part is transmitted via the first communication channel between the ID transmitter and wireless communication device, while the second part is sent through the second communication channel between the wireless communication device and the service provider. This segmentation enhances security by preventing unauthorized access even if one channel is compromised, while managing complexity through modular implementation.
2Reliability
If a service provider interface is introduced for authorization, then security is improved, but ease of operation deteriorates
Solution Approach 1:
A service provider interface acts as an intermediary between the vehicle access system and the wireless communication device. The service provider receives the first identifier from the ID transmitter, generates the authorized second identifier, and transmits it through the second communication channel. This intermediary layer enhances security by centralizing authorization control and preventing direct unauthorized access between the ID transmitter and vehicle, while maintaining ease of operation through automated background processes that require minimal user intervention.
3Reliability
If multiple communication channels are used, then security is improved, but loss of time increases
Solution Approach 1:
The system performs preliminary actions by establishing communication protocols and authorization frameworks in advance. The service provider is pre-configured with the ability to generate authorized identifiers, and the communication channels are pre-established for rapid data exchange. When access is needed, the multi-part authorization process can proceed efficiently because the infrastructure is already in place, reducing the time penalty associated with using multiple communication channels.
Data Source
AI summary
A method for providing wireless vehicle access, wherein a connection is set up between an ID signal generator which is assigned to the motor vehicle and a wireless communication device. A first identification code which is stored in the ID signal generator is transmitted to the communication device, and a connection is set up between the wireless communication device and a service provider by means of a public communication network. The identification code is sent to the service provider together with a second identification code which identifies the wireless communication device. A multi-part authorization message is generated by the service provider, and parts of the authorization message are sent to the wireless communication device while parts of the authorization message are also transmitted to a control device in the motor vehicle. Access authorization of the communication device is checked on the basis of the part of the authorization message from the motor vehicle and the part from the communication device, by means of a connection between the wireless communication device and the control device of the motor vehicle.