Car Key PKI Module for Secure Vehicle Access
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Solution Overview
Problem
Current authentication methods for securing access to road vehicles via network communication are cumbersome and vulnerable to unauthorized access, compromising safety and user acceptance.
Innovation Solution
A car key with an integrated electronic PKI module and communication module that provides digital public key infrastructure functionality, allowing secure communication with road vehicles through a terminal device without the need for additional devices, using public key encryption and decryption methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chip card readers with radio communication modules are used for secure authentication, then security is improved, but device complexity and bulkiness increase
Solution Approach 1:
The patent combines the PKI module, radio communication module, and mechanical key function into a single car key device. This merging eliminates the need for separate chip card readers and additional authentication devices, reducing overall system complexity while maintaining security functions.
Solution Approach 2:
The car key is designed with multi-functionality, serving as both a mechanical key, an electronic key with radio communication, and a PKI authentication device. This universal design allows the single device to perform multiple functions that previously required separate devices, reducing complexity for the end user.
2Reliability
If additional devices like chip card readers are required for authentication, then security is improved, but ease of operation deteriorates
Solution Approach 1:
By merging all authentication functions (mechanical key, electronic key, PKI module) into a single car key, the system eliminates the need for users to carry and operate multiple separate devices. The user simply uses their existing car key for all authentication purposes, significantly improving ease of operation.
Solution Approach 2:
The car key autonomously provides all necessary authentication functions without requiring external辅助设备. The PKI module within the car key itself performs cryptographic operations, and the radio communication module handles wireless authentication, allowing the device to serve itself without additional equipment.
3Adaptability or versatility
If radio communication modules are installed in vehicles for network access, then connectivity is improved, but vulnerability to unauthorized access increases
Solution Approach 1:
The system performs preliminary authentication using the PKI module and cryptographic key pairs before allowing any network communication or vehicle access. This preliminary security check ensures that only authorized devices can establish communication, preventing unauthorized access before it can occur.
Solution Approach 2:
The car key acts as an intermediary authentication device between the user/terminal and the vehicle's radio communication system. It mediates the authentication process by verifying cryptographic credentials before allowing network access, adding a security layer that prevents direct unauthorized access to the vehicle's communication systems.
Data Source
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AI summary
The invention relates to a car key for road vehicles, wherein the car key comprises a PKI module to provide a public key infrastructure functionality to an end device. The invention also relates to a communication system comprising such a car key, an end device, and a third communication participant, such as a road vehicle.