Tire Monitoring Network Configuration with Untrusted Setup Devices
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Solution Overview
Problem
Existing tire pressure monitoring systems face challenges in efficiently configuring secure communication between devices without compromising security, especially when using untrusted devices for initial setup.
Innovation Solution
A method involving an untrusted device that sequentially transmits and verifies configuration data to tire monitoring devices, followed by initializing cryptographic parameters for secure communication, ensuring proper data loading and secure communication establishment without the untrusted device knowing the parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If configuration data is transmitted to tire monitoring devices using an untrusted device, then the configuration process can be simplified and performed by non-expert operators, but the security of the configuration data and subsequent cryptographic parameters is compromised
Solution Approach 1:
The patent applies preliminary action by requiring verification of configuration data loading at each device before proceeding to the next device in the network. The untrusted device must receive confirmation that configuration data has been successfully loaded and verified at a first tire monitoring device before transmitting data to a second device. This sequential verification ensures security is established before cryptographic parameters are generated, resolving the contradiction by making security a prerequisite step rather than a subsequent risk.
2Reliability
If cryptographic parameters are generated after configuration data is loaded, then secure communication can be established between devices, but the untrusted device that performed configuration may later eavesdrop or compromise security
Solution Approach 1:
The patent applies segmentation by dividing the configuration process into distinct sequential steps: first verifying configuration data at individual devices, then only after all verifications are complete, generating cryptographic parameters. This segmentation separates the configuration phase from the security establishment phase, ensuring that the untrusted device cannot access cryptographic parameters until after it has completed its configuration task, thereby eliminating the eavesdropping risk while maintaining secure communication.
3Manufacturing precision
If configuration data is verified sequentially at each device, then proper loading and matching can be ensured before cryptographic parameter generation, but the configuration process requires multiple verification steps increasing time and complexity
Solution Approach 1:
The patent applies feedback by implementing a verification mechanism where each tire monitoring device confirms to the untrusted device whether configuration data has been successfully loaded and matches expected values. This feedback loop allows the system to automatically detect and correct configuration errors at each step, ensuring high configuration accuracy. The sequential nature of this feedback process does increase time, but it prevents rework from incorrect configurations, ultimately improving efficiency.
Data Source
AI summary
A method of configuring a network of tire monitoring devices using an untrusted device is provided. An untrusted device transmits first configuration data to a first tire monitoring device, and then receives a first input verifying that the first configuration data has been loaded to the first tire monitoring device and matches expected first configuration data. The untrusted device transmits second configuration data to a second tire monitoring device, and receives a second input verifying that the second configuration data has been loaded to the second tire monitoring device and matches expected second configuration data. The untrusted device transmits a command initializing generation of a cryptographic parameter by the first tire monitoring device, and causes the cryptographic parameter to be exchanged with the second tire monitoring device such that secure future communication is established between the first and second tire monitoring devices.