Encrypted Brake Pedal Signal Transmission Against Manipulation
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Solution Overview
Problem
Conventional brake systems for motor vehicles are vulnerable to manipulation of the actuation value transmitted via the signal connection, as they lack secure transmission and validation of the actuation value, making it difficult to recognize or prevent unauthorized modifications.
Innovation Solution
The brake system employs an encrypted signal connection to transmit the actuation value from the actuating apparatus to the actuator apparatus, using symmetric encryption with a key set at the factory, and optionally includes an asymmetric key exchange procedure to enhance security, thereby making manipulation more difficult to achieve or detect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the signal connection is openly accessible for transmission, then the ease of operation is improved, but the reliability is worsened due to vulnerability to manipulation
Solution Approach 1:
The patent introduces an encryption intermediary mechanism that mediates between the openly accessible signal connection and the actuation value transmission. The actuation value is encrypted before transmission and decrypted only at the receiving end, allowing open signal transmission while protecting the integrity of the actuation value from manipulation.
2Reliability
If encryption is implemented for secure transmission, then the reliability is improved, but the device complexity is worsened
Solution Approach 1:
The patent replaces potential physical security mechanisms with cryptographic encryption for protecting the actuation value. Instead of using complex physical security systems, hardware security modules, or biometric authentication, the solution uses software-based encryption algorithms that can be implemented through standard electronic components and communication protocols, thereby minimizing additional device complexity while achieving reliable security.
Data Source
AI summary
A brake system for a motor vehicle. The brake system includes an actuating apparatus including a brake pedal for detecting an actuation value specified by a driver of the motor vehicle, at least one wheel brake assigned to a wheel of the motor vehicle, and at least one controllable actuator apparatus using which a braking force of the wheel brake can be adjusted. The actuator apparatus is coupled to the actuating apparatus via at least one signal connection in order to adjust the braking force in accordance with an actuation value of the actuating apparatus. It is provided that the signal connection is designed to transmit the actuation value from the actuating apparatus to the actuator apparatus in encrypted form. A method for operating a brake system is also described.